Proceeding International Conference on Science and Engineering

Oil Field Development Scenario to Increase Oil Recovery Using Reservoir Simulation

2021-03-02T06:02:49+07:00

Abstract. Field “X” is an oil field located in the South Sumatra Basin. The field is located in an onshore area with reservoirs dominated by sandstone. Based on existing data, the average porosity of each layer is 18.9% and the average water saturation is 50.3%. The oil reserve calculate using volumetric method, from these calculation known the value original oil place (OOIP) is 23.454 MMSTB. Then, the calculation of recovery factor is done by using the JJ Arps. Methods. Based on this method, the RF value of each productive layer is known to be, A1 layer of 37.64733%, A2 RF layer at 38.01293% and A3 layer by 41.3509%. From these JJ. Arps, it can be estimated the productivity of reservoir from the initial oil reserve (OOIP condition). Field X first produced in 2016 and the field has a 30-year contract duration until 2047. In this field, the optimization of oil production is done by field development scenario of 5 step scenarios using the CMG Reservoir Simulation. The scenario consists of basecase by adding the infill wells, pressure maintenance, and waterflooding injection on the field X. From the simulation, it can be obtained the cumulative production, and recovery factor from each scenarios. On basic scenario or basecase condition or scenario 1 has an RF value of 6.039% and cumulative production is 1416500 MSTB, scenario 2 has an RF value of 12.29% and cumulative production is 2883000 MSTB, Scenario 3 has an RF value of 15.566% and cumulative production is 3650900 MSTB, scenario 4 has an RF value of 20.669% and cumulative production is 4847700 MSTB, and scenario 5 has an RF value of 21.435% and cumulative production is 5027400 MSTB. From the result of each scenarios, the scenario 5 is the best development scenario for the field “X”.

Optimization of The Physical Properties of Gas Fluids At the Stage of Field Exploitation Activity At Gas Field "X"

2021-03-02T06:03:05+07:00

Abstract. Gas Field “X” is field gas located on Prabumulih, South Sumatra. The “X” Field consist of 12 active well which produce gas from the BRF Layer (Baturaja Formation). After calculating the gas reserves of field “X”, Original Oil In Place (OGIP) is 526.48 BSCF. The purpose of optimization of the physical properties of gas fluids is to know the characteristics of gas fluids at the exploitation stage of the “X” gas field. From the gas composition, we know that the properties of gas from the field “X” dominated by methane, and the composition of impurities not so high. So, to know the fluid characteristic of reservoir required calculation with some correlation. If the characteristics of the gas fluid are known then it can calculate the welltest value, recovery factor value, and design of the surface gas production facilities. The methodology used to determine the physical fluid properties of gas at field “X” is to perform calculations on the physical fluid gas properties : Z factor, using Beggs And Brill correlation by consider the Pseudocritical Pressure (Ppc), Viscosity using Carr correlation, also viscosity of gas impurities (N2, CO2, and H2S), and Gas Formation Volume Factor (Bg) using Real gas equation-of-state correlation. Calculation of parameters, and analysis of PVT data conducted using Well X-01 as a research object. The results of PVT data analysis is considered to represent the real condition of BatuRaja Formation of Reservoir Gas Field "X". From the calculation, the value of physical properties obtained is Z factor of 0.804061 with Pseudocritical Pressure (Ppc) of 747,014 Psi, viscosity of 0.017115cp with N2 correction for gas viscosity of 0.000008, CO2 correction for gas viscosity of 0.001071, H2S correction for gas viscosity of 0. In addition, the value of the Gas Formation Volume Factor (Bg) is 0.00084 cuft/scf. These parameters are calculated at the same pressure value, then the fluid characteristics of the reservoir can be known at each pressure drop assuming the isothermal condition of reservoir.

Review: Literature Study of Particle Accelerator Development and Its Applications In Material Physics Research

2021-03-02T06:03:28+07:00

Abstract. Particle accelerator is an invention which relates to the beginning of sophisticated revolution of technology especially in 20th and 21st century. The spacious range of particle accelerator application penetrates not only in particle physics research, but also in other scientific field which is like chemistry, biology, technology and industry. Generally, its application is supporting the medical diagnostic and therapy, product sterilization and preservation, and in optical or electrical component manufacture, etc. Based on the library research, accelerators that have been developed can be divided into conventional accelerators and modern particle accelerators. The conventional accelerator is an accelerator principle based on the early concept of electromagnetism which is applied directly and simply to help human work. Modern accelerator is the next generation of conventional accelerator which has been developing to reach the need in extremely high energy. Modern particle accelerators are built on the basis of physics concepts such as Maxwell's equations to the latest theory of particle physics. The varieties of particle accelerator include first generation of accelerator, Van de Graaff, linac, betatron, cyclotron, microtron, synchrotron, synchrocyclotron, electron linac, proton linac, SLAC, ring collider, tevatron, (LEP, LHC, RHIC), and SSC. Current and future accelerator research challenges are to develop accelerators that have high efficiency but are more eco-friendly by minimizing nuclear waste and radiation factors. As the example is muon collider. Muon Collider has great prospective but the character of its instability still has quite challenging puzzle to solve. The field of material physics is very possible to take a role in this research because in principle the development of particle accelerator both its science and technology are necessity for material research, especially in material characterization.

Design of Prototype Home Door Security System Based Solenoid Door Lock, Magnetic Sesor, Microcontroller Nodemcu Esp8266 and Blynk Application

2021-03-02T06:03:43+07:00

Abstract. This research was motivated by many cases of property theft, so that it is necessary to make preventive efforts. The government together with the DPR have effort, through the Book of Criminal Law (KUHP), one of which is article 483. Although the government and the DPR has made efforts, but in reality there are still cases of theft that occur. Therefore, other efforts are needed minimize the theft of property. Other efforts can be done by strengthening the security system. Security sytem is the form of a house door security system. This research aimed to design a prototype of home door security system based on solenoid door lock, magnetic sensor, NodeMCU ESP8266 microcontroller and Blynk application. This research was conducted in two stages, firstly was design of house mockup using SketchUp Software and secondly was design of pin-pin configuration of the system using Fritzing Software. Design of prototipe home door security system based on solenoid door lock, magnetic sensor, ESP8266 NodeMCU microcontroller and Blynk application was designed using Sketchup Software and Fritzing Software.

Design of Light Control Sub-system Based on Pulse Width Modulation to Perfect The First Generation of UIN Sunan Kalijaga’s High Power UVLED Fluorescence Spectroscopy System

2021-03-02T06:03:59+07:00

Abstract. Research on design of a light control sub-system based on pulse width modulation (PWM) to perfect the first generation of Sunan Kalijaga’s high power UV-LED fluorescence spectroscopy sstem has been done. The purpose of this research was to design a light control sub-system based on PWM to perfect the first generation of Sunan Kalijaga’s high power UV-LED fluorescence spectroscopy system. This research was done in two steps, firstly was designing a light control sub-system separated from the first generation of Sunan Kalijaga’s high power UV-LED fluorescence spectroscopy system and secondly was designing a light control sub-system integrated into the first generation of Sunan Kalijaga’s high power UV-LED fluorescence spectroscopy system. Both were designed using CorelDraw software. The result showed that a design of a light control sub-system separated from the first generation of Sunan Kalijaga’s high power UV-LED fluorescence spectroscopy system has been made succesfully using CorelDraw. So as a design of a light control sub-system integrated into the first generation of Sunan Kalijaga’s high power UV-LED fluorescence spectroscopy system.

Quantum State Tomography of Single Qubit Using Density Matrix

2021-03-02T06:04:16+07:00

Abstract. The quantum state tomography is a fundamental part in the development of quantum technologies. It can be used to know the signal characterization of small particle called photon in the nanoscale. In this study, photon number has been measured in order to produce the states tomography. Optical devices and quantum-mechanical approaches were explored to obtain the quantum state tomography. Due to a single qubit state density matrix can be revealed by Stokes parameters, so there are four set-ups to measure the Stokes parameters for each sample. The density matrix is used because the pure state only appear theoreticaly. In the real experiment, It always exibits a mixed state. The samples of tomography measurements consist of linear state, cicular state and the IR 808nm. In this study, state tomography is shown by 2x2 density matrix. This experiment also provides the fidelities of experiment result. And it shows the good agreement. From this experiment, the state of IR 808nm has been detected. The laser that examined is showing a vertical state with fidelity F=97,34%.

Tree Vegetation Analysis after 10 Years of Mount Merapi Eruption

2021-03-02T06:04:32+07:00

Abstract. The 2010 Mount Merapi eruption caused variety of damage level in Mount Merapi National Park (MMNP). Over time, composition of vegetation and carbon stocks continues to change towards a climax. The objective of this study is to analyze the vegetation composition and tree carbon stocks in MMNP forest land with variations of damage level forest land after 10 years of Mount Merapi eruption in 2010. Data collection was administered from December 2019 to January 2020 in Dlimas (heavy damage), Gandog (moderate damage) and Tritis (minor damage). Plot placement was determined randomly in each location by making the main plot of 20 x 100 m for large trees and a subplot of 5 x 40 m for small trees (poles, saplings, seedlings). The composition vegetation analysis was performed using an inverted J curve, Importance Value (IV) index and Shannon-Wiener Diversity Index (H'). The calculation of carbon stock and woody necromass (dead trees) using allometric equations. Based on the results of data analysis, there are 40 species from 34 families. Moderate damage location has the highest diversity index H’ for large trees of 0.45 and small trees of 2.23. The highest carbon stock of tree stands and woody necromass was in minor damage of 172.06 ton ha-1, followed by moderate damage of 119.42 ton ha-1 and minor damage as much as 10.29 ton ha-1. Moderate and minor damage locations have curves that are close to inverted J shape with the density of seedlings and saplings more than large trees as a form of secondary forest regeneration. Abiotics correlated to carbon stock and tree density consist of air temperature, air humidity, soil pH, soil moisture, land slope and elevation. Ten years after the eruption, forests with moderate dan minor damage in MMNP Yogyakarta Province have high regeneration rate and carbon stock.

The Inventory of Dragonfly Species in Kedung Kopong and Banyak Angkrem Areas in Kalirejo Village, Salaman-Magelang

2021-03-02T06:04:55+07:00

Abstract. Dragonflies are classified into the Odonata order. The existence of dragonflies can be used as bioindicators of good water, related to their life cycle. The difference of habitats in the Kedung Kopong and Banyak Angkrem areas affects the diversity of dragonflies found in the location. The purpose of this research was to determine the types of dragonflies and their habitats in the Kedung Kopong and Banyak Angkrem areas. The method used in this research is the point count, which is by tracing the predetermined transects and divides it into some points. The distance between the points is 15 meters while the diameter of the points is 10 meters. The result of data collection of dragonflies in the Kedung Kopong and Banyak Angkrem areas as a whole obtained 19 species which is divided into 7 families, they are Aesnidae (2 species), Libellulidae (10 species), Calopterygidae (1 species), Cholorocyphidae (1 spesies), Coenagrionidae (2 species), Euphaeidae (1 species), and Platycnemidae (1 species). Habitats in the Kedung Kopong areas is the river. Meanwhile, in Banyak Angkrem are settlements and hills.

The Effect of Kembang Leson Essential Oil on Locomotor Activity of Mice (Mus Musculus L.) Balb-C

2021-03-10T15:02:25+07:00

Abstract. Kembang leson essential oil is known to have a relaxing effect so that it can be used as aromatherapy to treat psychological problems. The research was carried out to determine the effect of kembang leson essential oil on locomotor activity of mice (Mus musculus L.) Balb-C. The essential oil was isolated with Stahl steam and tested on Balb-C mice with a volume of 0.1 mL, 0.2 mL and 0.5 mL. A paired sample T-test is done to test the average difference between pre-treatment and post-treatment data. ANOVA test is done to test the average difference in post-treatment locomotor activity in each volume. The results show that kembang leson essential oil can increase swimming endurance along with decreasing immobility time and decreasing cage rotation which statistically significant between pretreatment and post-treatment. The most optimum volume of essential oil influenced locomotor activity is 0.5 mL, with an increase in swimming endurance up to 74.40% and a decrease in the rotary cage up to 50%. Kembang leson essential oil can affect the locomotor activity of Balb-C mice so that it can be developed into pharmaceutical preparations for aromatherapy.

Studies on Mitotic Division of Allium ascalonicum L. Based on Observation Time

2021-03-02T06:05:26+07:00

Abstract. Cell is the little functional structure of living thing. It has important benefit of life. All of body activity is controlled by the genetic material in cell, as an example is cell reproduction. Cell Reproduction is an enhancing of cell generation by cell division (mitotic). Cell division of iving thing has different time each other. It depend to composition of material genetic comlpex and the environment factor such as nutrition, temperature and light intencity. So that it make difficult to learn about the process of mitotic division. Therefore this research has purpose to find the effective time of mitotic divison and learn about the mitotic division process. This research was conducted by using chromosomal preparation method and mitotic index calculation. The sample of this research is Allium ascaloniicum L. (shallot). Based on the research that has been done, Allium ascalonicum L. has highest mitotic index in afternoon at 12.00 WIB with percentage 31,6%. In evening at 15.00 WIB it has 28,3% and in morning at 09.00 WIB it has 18,4 %. The mitotic division consist of 5 phase, prophase, prometaphase, metaphase, anaphase, and telophase.

Ethnobotany of Community Food Plants on the Slopes of Merapi Merbabu, Central Java, Indonesia

2021-03-02T06:05:37+07:00

Abstract. Ethnobotany is a study of the interaction between local communities and their natural environment, especially regarding the use of plants as food and medicinal ingredients. Food plants are a daily basic need whose existence is a necessity for the people on the slopes of Merapi Merbabu. How to use plants is transferred from generation to generation to form a culture. The research was carried out in March-May 2020 with the aim of digging public knowledge of plants used as food, including staple food, vegetables and medicines by studying the species diversity, including the benefits of organs, habit, how to use, process and how to obtain these species. The data were collected by using a combination of qualitative and quantitative methods with in-depth interviews through 40 respondents who were selected by purposive sampling. The results showed that the communities on the slopes of Merapi and Merbabu still used 74 plant species from 37 families as food plants. The favorite family is Fabaceae, followed by Zingiberaceae and Solanaceae. The most widely used hobbits’ were herbs (36.49%), followed by bush (28.38%), shrubs (18.92%) and trees (16.22%). Plant organs that are widely used are leaves (29.73%), fruit (17.57%), tubers (10.81%), seeds (9.46%), roots, rhizomes and flowers (6.76%), shoots (5.40%), stems (2.70%) and water, skin and heart (1.35%). The most common ways to use it are vegetables (29.73%), boiled (16.22%) and drunk (12.16%). How to obtain it through own cultivation (72.97%), and buying at the market (21.62). The highest use values were Adas (Foeniculum vulgare Mill.) (0.25), Lombok (Capsicum annum L.) (0.20), Kunir (Curcuma dosmetica loir) and Kangkung (Ipomoea aquatica Forsk.) (0.17). The highest importance values were Padi (Oryza sativa L.) (5.23%), and Adas (Foeniculum vulgare Mill.) (4.57%).

Potential of Indigenous Bacteria from Batik Wastewater as Cu Bioremediation Agent

2021-03-02T06:05:57+07:00

Abstract -Copper (Cu) is a heavy metal which can cause environmental problems in excessive amount. The presence of indigenous bacteria in a Cu-contaminated-environment can be used to reduce Cu levels in the environment. This study aims to determine the potential of bacteria isolated from batik wastewater as Cu bioremediation agent and to characterize those bacteria. Isolation of bacteria was carried out using the enrichment culture media consist of NB + 100 ppm CuSO4. The copper resistance test was carried out by growing bacterial isolates in NA media containing CuSO4 with concentrations of 200, 300, 400, 500, 600 and 700 ppm. The copper reduction test was determined by atomic absorption spectrophotometer. Bacterial identification was conducted by biochemistry characterization. The results showed that 10 bacterial isolates were able to grow on NA media containing 100 ppm CuSO4. Four bacterial isolates (namely ?3, ?5, ?8, and ?9) showed the highest resistance to CuSO4 (700 ppm). Bacterial isolates ?3, ?5, and ?9 were able to reduce Cu by up to 75,03%; 76,73%; and 76,34%. The three bacterial isolates showed similar characteristics to members of the Genus Xanthomonas. Isolate ?8 was able to reduce Cu up to 77,05% and was identified as member of the Genus Pseudomonas.

The Effect of Fermentation Duration and Concentration Variation of Gyrinops versteegii Leaf Decoction on The Alcohol Content of Gyrinops versteegii Leaf Decoction Water Kefir and Its Integration with The Qur'anic Interpretation

2021-03-02T06:06:09+07:00

Abstract. Water kefir is one of the drinks made from the fermentation of water kefir seeds. Alternative media is important to be found for product development. One of the potential media is agarwood leaf decoction (Gyrinops versteegii). The purpose of this research was to determine the effect of fermentation duration and concentration variations on the alcohol content of Gyrinops versteegii leaf decoction water kefir and its integration with QS. Al-Maidah [5]: 90 and QS. Al-A'raf [7]: 31. This research is an experiment with a completely randomized design (CRD) factorial pattern. The first factor was the concentration of agarwood leaf decoction (5%, 10%, 15%, and 20%). The second factor is the fermentation time (18 hours, 21 hours, and 24 hours). The second factor was combined with the addition of 6% sucrose, 5% water kefir seeds, and incubated at room temperature. The results showed that the length of fermentation and the variation in the concentration of agarwood leaf decoction had a significant effect on alcohol content with a significance value of <0.05. the alcohol content produced after fermentation is 0.4% -0.8%. The integration of these results used the interpretation method of the maudhui interpretation so that the conclusion was that beverage products below 1% alcohol content were halal and good products that were following the values contained in the Quran.

Effect of the Adding of Natural Antioxidant in the Stored Traditional Coconut Oil on the Free Fatty Acid Value

2021-03-02T06:06:23+07:00

Abstract: Coconut oil is one of edible oil that still produce in large quantity and sell traditionally. Coconut oil that is made and sells traditionally generally easy to become rancid and cannot be stored in a longer time. One of the main factors that caused rancidity in oil is the microbial activity that may hydrolyse oil to become glycerol and free fatty acid. The antioxidant is usually added in edible oil to prevent rancidity happened. This study aims determine free fatty acid value changing in the stored traditional coconut oil that had added with some nature antioxidants. Four natural antioxidant here are cinnamon, mangosteen peel, turmeric and cassumunar ginger. The free fatty acid value was determined using acid base titration for three weeks of stored traditional coconut oil. Results show that mangosteen peel as a natural antioxidant in traditional coconut oil gives the lowest change percentage in free fatty acid value (4.2%), while other natural antioxidant shows the same and higher change percentage of free fatty acid value. Several factors that caused the antioxidant didn’t work properly are the presence of moisture and impurities of material antioxidants. However, natural antioxidants become promise alternative antioxidants in edible oil because of healthy, not harmful, easy to obtained, cheap, less volatile, and more stable at high temperatures.

Analysis of Endo-1,4-?-Glucanase (eglS) Gene in Cellulose-Degrading Bacteria (Bacillus) Based on In Silico Research

2021-03-02T06:06:38+07:00

Abstract. The process of cellulose degradation naturally requires the help of microorganisms. The group of Bacillus bacteria is one of the cellulolytic bacteria that can break down cellulose. The mechanism of cellulose degradation in Bacillus is a complex system and was regulated by a number of genes. One of Bacillus genes that has mechanism of cellulose degradation is eg1S gene. This gene is responsible to hydrolyze the internal glycosidic bonds to reduce the long chain of cellulose. This research examines the comparasion of endo-1,4-?glucanase gene homology in Bacillus that can degrade cellulose. The method of research is in sillico-based research by using National Center for Biotechnology Information (NCBI) website, Clustal Omega website, and MEGA-X software. The results obtained in this research are the identity of endo-1,4-?-glucanase gene, phylogenetic tree, and similarity index in Bacillus that can degrade cellulose. From the research that has been done, it can be concluded that the highest homology ratio of endo-1,4-?-glucanase gene is occupied by Bacillus subtilis strain AuChE413 and Bacillus subtilis strain IARI-SP-1 with 100% identical similarities.

Morphology of Javan Broadhead Planarian (Bipalium Javanum)

2021-03-02T06:06:49+07:00

Abstract. Indonesia is one of the countries at the center richest biodiversity in the world, so that Indonesia is referred to as megabiodiversity country. One of the typical fauna in Indonesia is the broadhead planarian Javan (Bipalium javanum). Javan Broadhead Planarian is a parasitic worm that lives in humid areas and is protected from sunlight. Little research has been done on the Javan Broadhead Planarian, especially in terms of morphology. This research was conducted to determine the morphology and characteristics of the planarian broadhead javan. The research was conducted in two stages. The first stage is taking samples of worms at Kedung Pedut Kulon Progo Waterfall. The second stage is taking morphological image data. Data collection of habitat, behavior, dorsal and ventral body parts was carried out using a macrolens camera, and headplate and creeping sole image data were taken using a stereo microscope. The data taken is in the form of image data taken using a camera with a macro lens and a stereo microscope. Based on the research conducted, the results obtained from the image data of the habitat, behavior, headplate, dorsal and ventral body parts, and creeping sole.

Development of Phylum Mollusca Picture Cards as Learning Media

2021-03-02T06:06:58+07:00

Abstract. The process of remembering, understanding, and mastering the concept of material can be done more interestingly through pictures. Pictures can have a positive impact in helping the child's learning process in memory skills and can improve communication skills. This study aims to determine the feasibility level of the picture cards that have been developed. the research method used is research and devolopment (R&D). Research on the development of Phylum Mollusca picture cards using the application microsoft word and microsoft power poin. Medium assessment was carried out by one material expert, one medium expert, five peer reviewers, one biology teacher as a reviewer, and 15 grade x students. Meanwhile, the results of development research indicate that the quality of the invertebrates picture cards developed is in the very good category (SB) according to material experts with an ideal percentage of 89.33%, Good category (B) according to medium experts with an ideal percentage of 77.17%, Very good category (SB) according to peer reviewers with an ideal percentage of 90.8%, and biology teachers 86%. Thus it can be concluded that this media is declared fit for use as a medium for learning biology.

Bryophyte Diversity in Sawit Hiking Trails of Mount Andong, Magelang Regency

2021-03-02T06:07:07+07:00

Abstract. This research aims were to determine the types of bryophyte plants in Sawit Hiking Trails of Mount Andong, Magelang Regency. This diversity study resulted in 28 genera from 21 bryophyte plant families. The Pottiaceae and Brachytheciaceae families were the ones with the highest number of genera, namely 3 genera; Polytrichaceae, Dicranaceae, and Bryaceae consist of 2 genera; and other families only 1 genera. The most common bryophyte are Bryophyta were previously known as mosses.

The Difference in Cranium Morphological Characteristics of Homo sapiens, Pithecanthropus erectus, and Pithecanthropus soloensis

2021-03-02T06:07:12+07:00

Abstract. Modern human (Homo sapiens) are living things that have evolved through the evolutionary process from a kind of Primates. The history of human evolution is studied through discovery of fossilized body parts in layers of the earth. Early human Pithecanthropus is the most type commonly found in Indonesia, such as Pithecanthropus erectus and Pithecanthropus soloensis. Early human have different physical characters from modern human. Morphological characters are commonly used for identification of early human fossils. Cranium plays an important role in fossil identification because it has different variations between species as a result of evolution. This study aims to determine the differences in cranium morphological characters from H. sapiens, P. erectus, and P. soloensis. The research was conducted by observing the morphological characters of cranium. Data analysis with descriptive qualitative. The difference in cranium morphological characteristics of H. sapiens, P. erectus, and P. soloensis are the shape of cranium in verticalis norm, parietal tuber, and supraorbital torus. Cranium morphological characters is simply and reliable to identify the types of hominid species.

Factors That Effect of the Optimal Plantlet Growth from Tissue Culture on the Acclimatization Stage

2021-03-02T06:07:23+07:00

Abstract. Tissue culture is a method of propagation plants by isolating cell, tissues, protoplasts or plant organs than planting them in a sterile and controlled environment. This method is able to produce superior plants and propagation of plants are difficult to cultivate conventionally in large quantities with a relatively fast time. Acclimatization is an important final stage in the success of tissue culture method. Acclimatization is carried out for adaptation of the plantlet environment from in vitro to in vivo conditions. This is caused in the previous stage the plantlets are heterotrophic, while on acclimatization stage it will be autotrophic. This study aims to provide an information about the factors that affect the success of acclimatization plantlets. This is a review article was conducted using the literature study method by collecting information from journals, books or internet than analyzed in descriptive qualitative to prove scientifically. On this stage, many plantlets fail to grow and even die. for increase growth and reduce plantlets mortality need to be made overcome these problems. This can be overcome by applying acclimatization supporting factors. The result that factors affecting of the success plantlet growth on acclimatization stage including: the condition of the plantlets, light intensity, temperature, relative humidity, types of planting media, nutrition and fertilizing and controlling of pest and microorganisms.

Magnoliophyta Division Plant Diversity (Typical) in Imogiri Bantul Nature Reserve

2021-03-02T06:07:38+07:00

Abstract. Indonesia is rich in biodiversity, one of which is planted. The results say Indonesia is estimated to have 25% of the world's flowering plant species. However, not many people know what plant wealth is in Indonesia. Even the diversity of plants from the surrounding environment is sometimes ignored, even after the location is used as a protection or conservation area, but many still do not understand what is conserved in it. One of the conservation is Imogiri Nature Reserve, which is a production forest area of the Forest Office of Yogyakarta Special Region area of 11.4 ha. It is the location of the Imogiri nature reserve area is in the area of Imogiri King's Tomb Complex located in two villages namely Wukirsari Village and Girirejo Village which belongs to imogiri sub-district, Bantul Regency. This research aims to find out and introduce the diversity of Magnoliophyta (typical) in imogiri nature reserve. Research using roaming methods consists of the stage of data retrieval and identification. Research on the plant diversity of the Magnoliophyta division (typical) in Imogiri Nature Reserve obtained data from 2 classes, namely Magnoliopsida and Liliopsida which are rare plants found around the community consisting of 15 orders, 17 families and 19 species. The typical Magnoliophyta plant is dominated by the Magnoliopsida class.

Morphological Structure and Anatomy of Bamboo Ampel (Bambusa Vulgaris) in Imogiri

2021-03-02T06:07:50+07:00

Abstract. This research aims to find out the morphological structure of bamboo ampel ( Bambusa vulgaris) and the anatomy of bamboo ampel rods (Bambusa vulgaris). This research through two stages, the first stage is exploration and the second stage is the observation conducted in the integrated laboratory of UIN Sunan Kalijaga Yogyakarta. This study produced data in the form of morphological structures namely, the part of the stem that is smooth green shiny, bamboo shoots are fresh green, reeds with triangular tips and bald bases and covered with brown to blackish fur, and the surface of the upper leaves is smooth and shiny, and the lower leaves are fluffy. For its anatomical structure, ampel bamboo has anatomical parts such as the epidermis, cortex, transporting beams (protoxilem, metaxilem, and xilem), as well as fibers. This ampel bamboo transporter file is included in the type III transport file. For bamboo stem components this bamboo ampel is lignin 28.01%, cellulose 44.79%, starch 21.35%, water 6.81%, ash 2.47%, and silica 0.47%.

Morphology and Anatomy Histology of Brittle Star (Ophiocoma dentata)

2021-03-02T06:08:03+07:00

Abstract. This study aims to know the anatomy structure of the Morphology down to the and Histology of the Brittle star (Ophiocoma dentata). Brittle star is one of the Echinodermata phylum whose ecosystem is on a coral reefs, coral floors and hiding behind corals. Animal removal was made by observation of Nguyahan beach’s coral floor, at the same time as the site of morphology, followed by morphological and anatomic observations using stereo microscopes at the Zoology Lab of UIN Sunan Kalijaga, histological research using the eosin-hematoxylin method was also carried out in the same place. The results of the morphological observations of the star were obtained data on habitat, distribution,reproduction, a type of food, adaptation, movement and structure in the dorsal and ventral areas. While observation of the anatomy of the Brittle star (Ophiocoma dentata), data was obtained data on both horizontal and vertical disks, and leg structures by surgery. And the anatomical data of histology with eosin-hematoxylin got results on the disk, arms and spikes.

Inventory of Herpetofauna Types in Banyak Angkrem Hills and Kedung Kopong Salaman, Magelang

2021-03-02T06:08:16+07:00

Abstract. Indonesia is an area that has various kinds of herpetofauna, one of which is in the Hills of Banyak Angkrem area in Karang Kulon Village and Kedung Kopong area in Kalirejo Village, both in Salaman, Magelang. This study aims to determine the types of herpetofauna that found in that area. The method used in this research is VES (Visual Encounter Survey). The VES method was used to count the individuals found by the observer according to a predetermined paths. This research was conducted in February until March 2020. Observation carried out in the morning and evening. The total number of herpetofauna were found during the observation are 13 species of 7 families, there are 4 reptiles and 3 amphibians.

Inventory of Butterlies (Lepidoptera) Sub Ordo Rhopalocera in Kedung Kopong and Banyak Angkrem, Salaman, Magelang

2021-03-02T06:08:29+07:00

Abstract. Ecologically, butterflies as component in the pollination process have a role to maintain the balance of the ecosystem and enriching biodiversity. Because of that, it is important to study. It is found that the diversity of butterflies in a place is different from other places. It is because of the presence of butterflies in a habitat is closely related to environmental factors. Since there are various types of butterflies found in nature, this study was conducted to observe the type of species from the butterflies (Lepidoptera) Sub Ordo Rhopalocera that is found in Kedung Kopong and Banyak Angkrem, Salaman, Magelang. To collect the data, line transect method was applied. The length and width of the line adjusted to the topographic conditions and the stand density at the observation location. The results of this study reveals 61 species of butterflies belonging to five families. There are 9 types of Papilionidae families, 6 types of Pieridae families, 28 types of Nympalidae families, 7 types of Lycaenidae families, and 11 types of Hesperiidae families. It is found that Nympalidae family dominates the area while Peiridae is found as the less dominance.

Inventory of Bird Species in Kedung Kopong and Banyak Angkrem, Kec. Salaman, Kab. Magelang

2021-03-02T06:08:44+07:00

Abstract. Kedung Kopong waterfall area which is located in Glagah Village, and the mountain area Banyak Angkrem which have an altitude of 753 meters above sea level are located in Kalirejo Village, Kec. Salaman, Kab. Magelang, Central Java is a tourist area which is an ideal bird habitat. The existence of bird habitat in tourist areas has the potential to experience disruption due to tourist visiting activities. As a result, the vegetation areas, which are the most important bird habitats, are decreasing so that it is feared that many bird species will lose their habitat. The absence of data on the birds in the area, it is necessary to conduct research to obtain information on the variety of bird species in the area along with the mount of bird. This research was conducted on March 1st 2020 - March 15th 2020, every Saturday and Sunday. The data collection time in this study was adjusted to the weather situation in Kalirejo Village, Salaman District, Magelang Regency. Observation of bird species that have diurnal activity is divided into 2 sessions. This research method is to use the exploration method (explore) directly in the field in the area of Kedung Kopong and Banyak Angkrem. Data collection was carried out by tracing the existing footpaths and hiking trails. Inventory of bird species in the tourist area of Curug Kedung Kopong and the hill of Banyak Angkrem found a variety of different species. The Tesia team found around 26 species from 17 families in the two areas, were successfully identified.

Morphology and Anatomy of Species Heterocentrotus trigonarius and Tripneustes ventricosus (Echinodermata: Echinoidea) in Nguyahan Beach Gunungkidul

2021-03-02T06:09:07+07:00

Abstract. The basis of this research is a minimum of research on marine life in Nguyahan Beach, especially at the Echinoidea class. Echinoidea is an animal that very important role in the environment as an indicator of sea water pollution. This research discus about morphology and anatomy of the species Heterocentrotus trigonarius and Tripneustes ventricosus from Nguyahan Beach, Gunungkidul. This research using qualitative method by descriptive type, presenting pictures and descriptions. Discussion of the species Heterocentrotus trigonarius and Tripneustes ventricosus includes classification, morphology and anatomy. The special characteristics of Echinoidea class are the presence of Aristotle's lantern as an organ alimentary canal and gonads as an organ reproductive.

The Diversity Of Grasshoppers (Subordo Caelifera) In The National Park Of Mount Merbabu And Mount Pangonan Central Java

2021-03-02T06:09:17+07:00

Abstract. This study aims to determine the diversity of grasshoppers in the National Parks of Mount Merbabu and Mount Pangonan. The research method used is the exploration method and purposive sampling. The results of research on grasshoppers in the National Park of Mount Merbabu and Mount Pangonan, respectively, were shannon-wiener index diversity (H '= 2.187 and H' = 1.089), number of individuals (N = 92 and N = 35), and species evenness index (E = 0.697 and E = 0.608). The grasshoppers species found were Phlaeoba fumosa, Phlaeoba infumata, Phlaeoba sp. 1, Phlaeoba sp. 2, Phlaeoba sp. 3, Phlaeoba sp. 4, Phlaeoba sp. 5, Phlaeoba sp. 6, Caryanda spuria, Cercinae sp., Chitaura sp., Oxya sp., Erucius sp. 1, Erucius sp. 2, Atractomorpha crenulata, Atractomorpha sp. 1, Atractomorpha sp. 2, Atractomorpha sp. 3, Atractomorpha sp. 4, Atractomorpha sp. 5, Atractomorpha sp. 6, Atractomorpha sp. 7, Tettigidea lateralis, and Tettigidea sp.

Anatomical and Histologycal Study on Digestive Organs of Tree Shrew (Tupaia javanica)

2021-03-02T06:09:26+07:00

Abstract. Squirrels are members of the class of mammals which are also included in the Scandentian order. This study aims to determine the anatomical structure and histology of the digestive organs of the squirrel kekes (Tupaia javanica). The research consisted of the stage of making histology slides of the digestive organs of squirrel kekes using the paraffin method and the Hematoxylin-Eosin staining method. The digestive organs in this study consist of the esophagus, stomach, small intestine, large intestine, and liver. Histological observations show that the organs of the esophagus (esophagus), stomach, small intestine, and large intestine are found in some of the same tissues, among others, epithelium tissue, lamina propria, mucosa, submucosa, serosa and adipose. While the liver is found in several tissues including the hepatic sinusoid, central vein, portal vein, hepatic arteries and lymphatic vessels.

Capacity of Autotomy and Postautotomy Movement of Original and Regenerated Tail of Lizards (Mabouya multifasciata Kuhl)

2021-03-02T06:09:42+07:00

Abstract. Lizards have the ability to shed their tails as a defence mechanism, known as autotomy. The tails will regenerate after automomy. Anatomical difference between original and regenerated tail could have resulted in the difference of capacity of autotomy and postautotomy tail movement. The aims of the research were to study the capacity of autotomy and postautotomy movement of original and regenerated tail of lizard. Comparation of the capacity of autotomy and postautotomic movement between original and the regenerated tail was studied using three groups of lizard, namely group of lizard with original tail (10 lizards), eight weeks regenerated tail group (10 lizards), and twelve weeks regenerate tail group(10 lizards). All groups received same treatment. The lizards were hold on the proximal part of tail with tweezers until autotomy has taken place, and the duration to autotomy and postautotmy movement were recorded. The result of the study revealed that the capacity of autotomy and the postautotomy movement were lower in regenerated tail compare to those of the original one.

The Potential Role of 5-Methyl-2 (3H)-Furanone in Tamarindus indica as Lipoxygenase (LOX) Inhibitor: in Silico Study

2021-03-02T06:09:53+07:00

Abstract. Tamarindus indica is the Fabaceae family that is used in the pharmaceutical theuraphic because it contains polyphenols. One of the studies is to have anti-inflammatory properties. When inflammation occurs, , the lipoxygenase (LOX) pathway will be formed as a mediator of acute inflammation. Reducing inflammation, it is necessary to control genes that play a role in increasing inflammation, one of which is LOX. This study aims to analyze the potential of the 5-Methyl-2 (3H)-Furanone compound on LOX action. The compound 5-Methyl-2 (3H) -Furanone (CID 11559) was downloaded from the PubChem database. The 5-LOX protein was downloaded from Protein Data Bank (PDB 6N2W) and and prepared by removing ligands and molecules that bind to Discovery Studio V19.1.0.18287. The compounds and proteins were interacted with the Vina autodock software integrated in the PyRX software and analyzed using Discovery Studio V19.1.0.18287. The results showed 5-Methyl-2 (3H) -Furanone binds to lipoxygenase on the active sites of Gln329, Arg518, Ile330, Leu153, Glu146, Asn328, and Asp290. The three bioactive compounds tamarin bind to lipoxygenase with hydrogen, hydrophobic and van der Waals forces. The ligands and proteins that are formed produce energy -6Kcal/mol. The interactions that occur between compounds contained in Tamarindus indica have potential as inhibitors of LOX and are predicted to be used as compounds for inflammatory therapy.

Effect of Gas Pressure and Electrode Distance on Self-Bias Voltage in Sputtering System for Thin Films

2021-03-02T06:10:08+07:00

Abstract. The production of thin films using the sputtering preparation method is closely related to plasma. The deposition process involves several factors including self-bias voltage, sputter gas pressure, the distance between electrodes, and how to clean the substrate. This study will discuss the effect of variations in gas pressure and electrode distance on the resulting self-bias voltage. The method used is an RF sputtering system equipped with sensors for self-biased pressure and voltage readings. The results show that there is a corelations between pressure and electrode distance with self-biased voltage. Argon gas pressure variations are carried out in the range 4.5 – 8 x 10-2 mbar with variations for each increase in argon gas pressure of 0.5 x 10-2 mbar. The graph plot results show a logarithmic inversely proportional relationship, that is, when the pressure of argon gas is increased, there will be a decrease in self-bias voltage. The variation of the electrode spacing is carried out in the range 2 – 5 x 10-2 meters with a variation of each increase in the electrode distance of 1 x 10-2 meters. The corelations between the distance of electrodes and the self-biased voltage is logarithmic. When the electrode distance is increased there will be an increase in the value of the self-bias voltage.

The Effect of Gamma Irradiation on Quality of Composite from Bagasse, Bamboo, and Polypropylene Coated Resin

2021-03-02T06:10:24+07:00

Abstract. Based on data from Direktorat Jenderal Perkebunan the sugarcane production in Indonesia from 2014-2018, sugarcane processing produced bagasse waste with an amount of about 0.825 million tons/year. The data from Badan Pusat Statistik (BPS) showed that national bamboo production in 2014-2018 was above 7 million stems/year. Currently, bagasse waste and bamboo waste are not utilized optimally and have low value. These wastes can be used as composite materials which have a higher economic value. The composite structure can be strengthened by a resin coating and polymerized using gamma irradiation. Gamma irradiation phenomena can also cause degradation which weakens the composite structure, so it is necessary to vary the radiation dose. This research aims to determine the effect of gamma irradiation on composites of bagasse fiber, bamboo fiber, and polypropylene (BBP) on the compressive test, water resistance, and density. BBP composites are made from 10% bagasse fiber, 10% bamboo fiber, and 80% polypropylene with a size of 40 mm x 30 mm x 20 mm. All components were mixed and coated with acrylic resin with a thickness of 2 mm, then irradiated with various doses of 0, 10, 20, 30, 40, and 50 kGy. The results of the BBP composite compressive test for irradiation doses of 0 to 50 kGy were respectively 29.667; 37.167; 50,235; 60,542; 52.537; and 46.545 kg/cm2. The average result of the water-resistance test of the composite BBP absorbs water as much as 0.524 %. The results of the mean density test of the composite BBP obtained 0.894 gr/ml. The strongest composite structure was obtained at a dose of 30 kGy.

Edible Film Application of Soybean Extract with the Addition of Tapioca Flour and Glycerol as A Green Grape Packer (Vitis vinifera L.)

2021-03-02T06:10:41+07:00

Abstract. This research has been carried out on the manufacture and characterization of edible films made from soybean extract with tapioca flour and glycerol applied in packaging for green grapes. This study aims to determine the effect of glycerol addition on the physical properties of the resulting packaging and the effect of the repetition of grapes immersion in the packaging solution on the grapes' quality. This research's stages were the manufacture of soy milk, film formation, film characterization, water vapor transmission rate (WVTR), and application test of packaging solutions to the quality of green grapes using weight and color loss tests. A variety of glycerol (0.5; 1; 1.5; 2; 3; 5%) and the optimum yield is used to coat green grapes. The results showed that the optimum composition for making an edible film was obtained in the edible film with the addition of 2% glycerol concentration. The addition of 2% glycerol concentration can affect the physical properties of the edible film with a thickness of 0.1235mm, tensile strength of 2.4768 MPa, elongation of 66.8786%, Modulus young 0.03702 and water vapor transmission rate of 2.5306 g/m2.hours and optimum immersion variations on grape quality green found at six times immersion.

The Use of Microsoft Office 365 In Mathematics Learning During The COVID-19 Pandemic

2021-03-02T06:10:56+07:00

Abstract. The Covid-19 virus is currently sweeping the world, including Indonesia. The COVID-19 pandemic has changed various aspects of human life today, especially in the world of education. This requires all elements of education to be able to adapt in the process of learning activities. One of the effective solutions in implementing learning during this pademic period is online learning. Online learning is carried out to activate classes even though schools have been closed considering the time and place they are at risk during this pandemic. The teaching and learning process which is usually done face-to-face in the classroom must now be done through distance learning. This is done to support the government's efforts to reduce the rate of spread of the COVID-19 virus. The government has established policies for studying from home, working from home, and praying at home, for this reason this policy must really be implemented by the entire community. The learning process from home can be done through online or distance learning with the use of information and communication technology, one of which is the use of Microsoft Office 365. This study aims to determine how the use of Microsoft Office 365 in learning mathematics during the COVID19 pandemic, so the results of this study It can be used by teachers as a reference in the use of media for online mathematics learning and teachers become more concerned about the various obstacles experienced by students. The method used in this research is literature study, which examines relevant previous studies and concludes based on the results obtained. The results of this study indicate that there are several obstacles experienced by teachers and students in the use of Microsoft Office 365, namely bad signals, servers down and difficult to access, additional internet quota costs, unlimited teaching hours, lack of communication and socialization between teachers and students, mastery in Microsoft Office 365 usage which is still low. In addition, the use of Microsoft Office 365 learning activities can be varied by using the features provided, such as conducting video conferencing, holding online quizzes, giving assignments, there is also a whiteboard application that can be used when learning with video conferencing via Microsoft Teams, especially in learning mathematics, so that the learning carried out is not much different from face-to-face learning in the classroom, it's just that it is implemented in a different room and virtual. There are still a lot of features in Microsoft Office 365 that can be used in the learning process, so that learning activities are not boring. Then it can reduce costs (fees) for out-of-town teachers and teaching time to be flexibility, making it easier to update teaching materials and check assignments. So it can be concluded that the Covid 19 pandemic has had various impacts on the use of Microsoft Office 365 in learning mathematics.

Implementation of Canvas Learning Management System using Google Cloud

2021-03-02T06:11:23+07:00

Abstract. The use of web Learning Management System (LMS) software is often used in schools and universities as online learning. Some of the LMSs that are often used in Indonesia are Moodle, Blackboard CourseSites, Schoology, Latitude Learning, Academy Of Mine, and so on. Apart from the software side, there are also other considerations from the hardware side, because the use of LMS the load on the server becomes very high. The use of cloud computing may be a solution because it is more flexible if you want to increase server capacity. This article will provide how to start using cloud computing and installing Canvas LMS. The superior features, shortcomings, and costs of the LMS are also discussed as reference material when implementing the LMS. Canvas LMS can be used either as online learning in schools or universities, as well as an education-based startup development innovation in Indonesia. Given the importance of educational-based startup applications, examples that exist now are RuangGuru, PesonaEDU, Zenius, Kelase, and so on. One of the paid online applications that already running well is Ruangguru. Ruangguru provides interesting learning material features and is accompanied by interactive learning videos. The added value of developing such LMS-based applications in our own institutions is that it can be adjusted to the curriculum, schedule, and conditions of our own institutions so that this can be an added value and competitiveness of educational applications such as Ruangguru.

Application of The Naive Bayes Classifier Method In The Sentiment Analysis of Twitter User About The Capital City Relocation

2021-03-02T06:11:35+07:00

Abstract. The president's official decision regarding the relocation of the capital city, which previously was in Jakarta and will be moved to East Kalimantan, will be a big issue and generate a lot of debate from both the agree and the disagree Indonesian citizen because this project will require a lot of funds and will have massive impacts on various sectors. This study uses 1290 tweet data consisting of 686 negative sentiments and 603 positive sentiments. These data were used as training data to create evaluation models using confusion matrix and split validation techniques. In this study, it is used TF-IDF word-weighted feature extraction with the Naive Bayes method. The result from the experiments, which was carried out on the best accuracy by splitting data 90:10 for training and testing respectively, is 76.74%. The model that has been made is implemented in 1115 test data resulting in 799 negative sentiments and 316 positive sentiments.

Redesign Facility Layout and Minimize Material Handling Cost on PT ABC in Pandemic Era

2021-03-02T06:11:45+07:00

Abstract. Since March 2020 the news of Covid-19 has spread in Indonesia, with this situation there have been many changes in the industrial sector in Indonesia. In this situation, industry players should make adjustments to their production processes so they can continue and run safely. According to information from the Ministry of Health and the Task Force for the Acceleration of Handling Covid-19, one of the health protocols to prevent the spread of Covid-19 is physical distancing, where the minimum distance between workers is 1 meter. So to deal with this condition, of course, it is necessary to redesign the layout of the factory facilities. Layout is an important decision that determines the efficiency of long-term operations. PT ABC is a company engaged in the processing of metal goods. In addition to implementing health protocols, PT ABC also has problems in structuring work facilities that are not quite right. This can lead to less effective and efficient workers for moving the material, thus causing a lot of work in process. The analysis method to these problems uses the ARC (Activity Relationship Chart), ARD (Activity Relationship Diagram), and Flexsim 6.0 simulation method to determine the Material Handling Cost and production output. Layout changes that have been made, can minimize material handling costs which were previously $ 28,847.16 reduced to $ 22,717.76 to get $ 6129.4 or about 21%.

500-kV XLPE Underground Cable Line Construction for Sustainainability Electric Power Transmission in City Centers

2021-03-02T06:12:00+07:00

Abstract. 500-kV Underground Cable transmission line design is a type of design that has never been applied in transmission line construction in Indonesia. Even around the world, 500 kV Underground Cable designs are still limited scale. Actually, electric power transmission line grid systems in Indonesia with a voltage rating 500 kV has been applied, but only in Java island with Overhead Line transmission line model, and it’s a backbone of the Java-Bali power grid system. Currently, PLN have a Jakarta Looping transmission system project 500 kV Extra High Voltage. This project has a potential delays due to land problems and social constraints along the route. Given that Jakarta is a capital city with a very high population, the construction of a tower transmission line will be a special challenge to complete the transmission project, where the process of land acquisition and compensation costs under along the route (ROW) will also be a special thing. In this research, we will try to estimate the construction cost for the 500 kV Underground Cable as an alternative to the project for other types of aerial cables. The route length will be adjusted into 4 categories of the overhead line route 1)a half of the overhead line route, 2)same with the overhead line, 3) 1.5 times of overhead line, and last 4) 2 times of overhead line. From the estimated calculations with these 4 categories, it is obtained the ratio of construction costs with underground cable designs to the overhead line design is smaller than cost of ratio for the same project design in Europe and/or America. It’s feasible to execute in urban area like Jakarta, Surabaya and Bandung, but not feasible for outside urban area.

Model of the Influence of Construction Management Components on the Achievement of Road Preservation Quality with Long Segment Schemes on National Roads in West Kalimantan

2021-03-02T06:12:13+07:00

Abstract. West Kalimantan is the fourth largest province after Papua, East Kalimantan, and Central Kalimantan with a land area of 146.807 km². The length of the national roads in this province is 2.117,17 km with road stability rating of 93,88%. The characteristics of construction quality and the contribution of the construction management component to quality achievement need to be identified and analyzed, so that road preservation work can be carried out effectively and efficiently. This study aims to obtain the desired quality characteristics in road preservation with a long segment scheme, as well as the contribution of construction management components to the intended quality achievement. The questionnaire was distributed to stakeholders of National Road network preservation in West Kalimantan Province. Results show that both owners and service providers agree that (1) design accuracy, (2) understanding of method, schedule and design, and (3) quality accuracy are the highest rank components of construction management. Multiple linear regression formulates that X5 – Design and Supervision is the variable with the most impact on quality of road preservation with long segment scheme.

Classification Of Batik Images Using Multilayer Perceptron With Histogram Of Oriented Gradient Feature Extraction

2021-03-10T14:08:32+07:00

Abstract. Batik is one of the hereditary cultural heritages which has a high aesthetic value and a deep philosophy. Batik is one of the cultural icons from Indonesia which was awarded as a cultural heritage from UNESCO on October 2, 2009. Currently, Indonesian batik has various types of motifs and different patterns, which are scattered in Indonesia with their names and meanings. The many batik patterns in Indonesia make it difficult to identify batik motifs, especially for the common people. To overcome this problem, it is necessary to have a batik classification system with a high level of accuracy, so that everyone can recognize the batik pattern easily. In this study, the Histogram Of Oriented Gradient method was used as a feature extraction process to obtain batik density and Multilayer Perceptron as a classification method to determine the level of accuracy. The result of the level of accuracy obtained for each batik motif has a different level of accuracy. This is because the batik motifs have unique patterns and shapes that are not specific. The level of income obtained was 83.4 %. From the results of the study concluded that the use of the Histogram Of Oriented Gradient method as a feature extraction method, the Multilayer Perceptron as a classifier can be applied for image classification on batik.

The Evaluation of Polymer-Modified BNA-Blend

2021-03-02T06:12:39+07:00

Abstract. Asphalt roads are the lifeblood of people who live in the desert regions in Libya, where the environment there considered the hottest and arid region in the world. So, this harsh environment damages the asphalt road and make it unsafe. High temperature and wheel loads are essential factors that damage the asphalt road. Rutting is one criterion for the failure of this asphalt mixture, which disturbs passengers and increases the maintenance costs of asphalt pavement. This research evaluated the physical and rheological characteristics of BNA-Blend modified with elastomeric polymers. Five types of polymers used, namely, NR (Latex), EVA, SBS, and EPDM at five percentages (2, 4, 6, 8, & 10%) of each kind of polymers. The fluorescent microscopy images show homogenized for NR, EVA, and SBS mixtures, except the EPDM mixture. The physical properties of these polymer-modified BNA-Blend have measured through experimental tests as penetration, softening point, and ductility test, and viscosity test to measure rheological properties. Besides, the influence of the homogeneity of polymer-modified BNA-Blend has investigated. The fluorescent microscopy images show homogenized for NR, EVA, and SBS mixtures, except the EPDM mixture. The rheology test result of polymer changed BNA-Blend increases the softening point, viscosity and decreases the penetration.

Implementation of Multilayer Perceptron for Image Classification

2021-03-02T06:12:54+07:00

Abstract. This research proposed to classify images on hands playing rockpaperscissor through hand images. We use Multi Layer Perceptron to classify. There are there class for the classification which are rock class, paper class and scissor class. Dataset for this research obtained from Kaggle Dataset. The number of datasets is 2188 images which are 712 rock images, 726 paper images and 750 scissor images. The Accuracy of this model is very good arround 95%.

Sentiment Prediction Accuracy of Amazon Fine Food Review using TFIDF and LightGBM models

2021-03-02T06:13:01+07:00

Abstract. Changes in the pattern of society in meeting their needs develop as the times progress from conventional to digital. This makes service providers need to change business work patterns towards digitizing buying and selling transactions. Service providers serve consumer needs digitally and maintain optimal service patterns. One of the efforts to maintain optimal service is through community response to services, both positive and negative. The community response can be analyzed using sentiment analysis. This study focuses on the analysis of the accuracy of sentiment predictions on the Amazon fine food review dataset, which was taken as many as 20,000 data samples. The analysis was carried out in various stages, namely dataset collection, data preprocessing, TF-IDF, and LightGBM. The test results used TF-IDF and LightGBM with TF-IDF parameter settings of 1 to 2 grams and LightGBM parameter settings with a max_depth of 50. Num_leaves used were 40 and the learning rate was 0.1 on the Amazon Review dataset which took 20,000 samples. The analysis carried out resulted in a predictive level of sentiment accuracy above 90%, reaching 93.2%.

Analysis Model of Detection Level of Food-Stood Railway and Reservation with Fuzzy Set Theory in Yogyakarta

2021-03-02T06:13:12+07:00

Abstract. In Indonesia, the soil conditions of each region are of course different, depending on the type of soil and the geographical location of a place or an area that affects the soil quality. For farmers, especially in the countryside, to understand the knowledge of good soil quality is difficult and it takes a long time to determine the right types of plants to plant in accordance with the soil. For that, it needs a strategy in knowing a polluted land or not especially for farmers. The purpose of this paper is to assist the process of dissemination of information and knowledge through calculations using fuzzy logic. In this research, the data that is processed is the land aspect data as a benchmark in determining whether or not soil contamination includes soil pH or soil acidity, soil minerals, soil structure and soil nutrients. At this writing is done fuzzy calculation analysis with Sugeno method. In this paper shows that the results obtained by the Sugeno method have results that are less in accordance with the actual data.

Prediction of COVID-19 Cases in West Nusa Tenggara using SEIQR Model

2021-03-02T06:13:22+07:00

Abstract. On March 17, 2020 a patient have tested positive for COVID-19. That case become the first confirmed case in the West Nusa Tenggara (NTB), Indonesia. These cases continued to grow over time until September 14, 2020 Which brings the total number of positive cases to 2979.COVID-19 can transmit through direct or indirect contact with infected people’s vomit, urine, feces, or airborne transmission. People who are infected, develop symptoms, or travel between provinces or even countries must be quarantined for 14 days to prevent further spread of COVID-19. A person who survives after quarantine will develop new immune system so that he/she can’t get infected twice. Therefore the appropriate mathematical modeling is SEIQR modeling which stands for susceptible, exposed, symptomatic infected, quarantine, and recover. In this paper, we will conduct SEIQR modeling on COVID-19 in NTB using data obtained from corona.ntbprov.go.id, which is the official website of the government of NTB. From those data, we will obtain the model and also growth chart. The result of our study is growth chart of COVID-19 in NTB.

Accuracy Assessment of Land Use/Land Cover Classification Data from Sentinel-2 & ASTER Imagery Interpretation using Unsupervised Classification Algorithm

2021-03-02T06:13:36+07:00

Abstract. Accurate land use/land cover information is important for various spatial planning decision making. Remote sensing is an effective mapping technique such as those depicting land cover as it provides a map-like representation of the Earth’s surface that is spatially highly consistent. This study compared the classification accuracies of land cover/land use maps created from Sentinel-2 and ASTER imagery with the Kalimanah Sub-district as a research area. Both images are clustered into 52 spectral clusters using Learning Vector Quantization (LVQ) and K-means unsupervised classification algorithm. Each spectral cluster from each image was assigned into four land use/land cover classes, i.e. urban, agricultural, forest, and barren land. 240 data references were generated from Google Earth imagery as the sample data set is compared with the classification maps that is being assessed. With the kappa analysis approach, error matrices are made based on the same data references for each of the two images to assess the classification quality and to find out the best imagery that yields the most accurate land use/land cover data. Overall accuracy of LVQ algorithm for the Sentinel-2 and ASTER imageries was 78.33% and 69.17%, respectively; while the kappa coefficient of LVQ algorithm for the Sentinel-2 and ASTER imageries were 0.71 and 0.55, respectively. In different circumstances, overall accuracy of K-means algorithm for the Sentinel-2 and ASTER imageries were 81.25% and 72.68%, respectively; while the kappa coefficient of K-means algorithm for both imageries were 0.74 and 0.61, respectively. At the 95% confidence level, for both LVQ and K-means classification algorithms, image classification accuracies of Sentinel-2 dataset are better than the ASTER dataset. Thus, Sentinel-2 imagery provides better accuracy than ASTER imagery in land use/land cover classification data from any unsupervised classification algorithms.

Cluster Analysis Using Hierarchic Method for Classification of District / City of North Kalimantan Province Based on Human Development Indicators (HDI)

2021-03-02T06:13:55+07:00

Abstract. HDI is an important indicator in measuring the success of the development of the quality of human life in terms of education, health, and life worthiness. HDI in the province of North Kalimantan (Kaltara) has always experienced a significant increase. However, the increase is always below the national figure. This is due to the development that is not implemented evenly and is not on target. Cluster analysis is a multivariate method that has the aim of grouping, where a group has relatively the same characteristics (homogeneous), while between groups has different characteristics. This study showed that the best method in hierarchical cluster analysis is the ward's method. Therefore, there were 4 clusters in the HDI in North Kalimantan province which included HDI with the high category, namely the city of Tarakan, then the HDI with the medium category, namely Malinau district then the HDI with the low category namely Bulungan district, then the HDI with the very low category namely Tanah Tidung district and Nunukan district.

Estimation of Zero-Inflated Negative Binomial Regression Parameters Using the Maximum Likelihood Method (Case Study: Factors Affecting Infant Mortality in Wonogiri in 2015)

2021-03-02T06:14:09+07:00

Abstract. The relationship between the response variable (Y) with one or several predictor variables (X) can be determined by using regression analysis. In a simple linear regression model there is an assumption that the response variable follows the normal distribution, but in reality it is often found that the response variable does not follow the normal distribution. If a response variable has a Poisson distribution then it can be analyzed with a Poisson regression model. There is an assumption that must be fulfilled in poisson regression that is equidispersion (the variance value must be equal to the average value), so this model is not suitable for use in data that is overdispersed (the variance value is greater than the average value). Poisson regression is a general model used to analyze discrete data where discrete data is often found to be of zero value with an excessive proportion of response variables (zero inflation). An alternative model for dealing with overdispersion and zero inflation is the Zero Inflated Negative Binomial (ZINB) model. This research aims to estimate the Zero-Inflated Negative Binomial (ZINB) regression parameters using the maximum likelihood method. The zero inflated negative binomial model (ZINB) was applied to the case of infant mortality in Wonogiri Regency in 2015. The results showed an independent variable that affected the infant mortality rate was the percentage of pregnant women (X_4) with an AIC value of 113.1961.

Thabit Ibn Qurra : History and The Influence to Detemine The Time of Praying Fardhu

2021-03-02T06:14:24+07:00

Abstract. The application of mathematical history for overcoming with life’s problems are reflection to build more advanced civilizations than previous civilizations, because by studying history a nation can do an evaluation of the past mistakes. In addition, mathematical history gives wide basic understanding against the mathematical consepts for giving a solution against the problems. Not only about the ideal world held by the Platonist. As example, in the golden age of islam, the scientist at that moment developed knowledge especially mathematics with the principal to solve the problems with in daily life. The one of them is Thabit ibn qurra. Thabit ibn qurra used the principal of geometry to decide motion of the sun. The method used was by means of a shadow that produced by sunlight. So, the muslim can pray fardhu on time. This research is meant to reconstruct the method was used by Thabit ibn qurrah, so that the mathematics especially, the topic of geometry is no longer a matter that cannot be expressed in real or real terms. So that, the young generations, especially muslim will realize that learn the mathematics is invaluable in this life. Not only for them self but also to give benefits for a lot of people. The result is the young generations will have the spirit to learn it. The method was used in this research is the study of literature, which mean to study the relevant previous researches and conclude based on the data obtained. The result of this research Thabit's discovery of influences on prayer time determination.

Covid-19 Risk Mapping with the Fuzzy C-Means Method in DIY Province

2021-03-02T06:14:40+07:00

Abstract.The Fuzzy C-Means method is one of the grouping methods that can be used by the cluster model. This method can be used to classify various case data, one of which is related to Covid-19. This research is intended to determine the level of risk of Covid-19 based on several determining variables in the province of Yogyakarta Special Region (DIY) during the last 2 months. The data is processed using fuzzy c-means clustering (FCM) analysis which is a development of fuzzy clustering analysis with c participation to analyze the Covid-19 pandemic in DIY province based on several determining variables, namely the number of additional positive victims, pdp , and the frequency of recovered patients. The number of additional positive victims, pdp, odp and frequency of recovered patients were used as variables in grouping regions by district based on the level of risk to Covid-19. The best grouping results are obtained based on "High Risk" and "Low Risk". Districts that are included in the High Risk group are Sleman and Yogyakarta Regencies. Meanwhile, other districts are included in the Low Risk group, namely Bantul, Kulon Progo, and Gunungkidul Regencies.

The Use of Modified Block Pulse Functions for Solving the Stochastic Volterra-Fredholm Integral Equations

2021-03-02T06:14:57+07:00

Abstract. A computational method based on modified block pulse functions is proposed for solving numerically stochastic VolterraFredholm integral equations. We obtain stochastic integration operational matrix of modified block pulse functions on interval [0,1). Amodified block pulse functions and their stochastic integration operational matrix can be reduced to a linear upper triangular system. Then, the problem under study is transformed to a system of linear algebraic equations which can be used to obtain an approximate solution of stochastic VolterraFredholm integral equations. Furthermore, the rate of convergence is (?) and error analysis of the proposed method are investigated. The results show that the approximate solutions have a good of efficiency and accuracy.

Virtual Screening of 8-Gingerol in Zingiber officinale Towards Cox-2 Gene

2021-03-02T06:15:10+07:00

Abstract. Ginger rhizome has polyphenol component which is 8-gingerol. Recent research showed that the compound has role as antiinflammation and antioxidant. This study aim to analyze the role of 8-gingerol which interacts with COX-2. This study used in silico analysis. Protein model COX-2 (ID: 6cox) was taken from Protein Data Bank (PDB) database while 8-gingerol (CID: 168114) from PubChem. Docking and visualization of interaction between COX-2 and 8-gingerol using Discovery Study Client 4.1 software. We found 8-gingerol has the potential as an inhibitor of the COX-2 gene as evidenced by the 3 amino acid residues that interact with the ligands on the active site and are supported by van der Waals forces and a bond energy of -340.3 cal/mol.

Analysis of Institutional Aspects of Operation and Maintenance of Micro Hydro Power Plant Case Study in Sumba Island - NTT

2021-03-02T06:15:21+07:00

Abstract. One strategy is to support the government to increase Electrification Ratio by utilizing Renewable Energy amidst the limitations of The State Electricity Company (PLN – Perusahaan Listrik Negara) to reach outermost and remote rural locations. Sumba Island is one of the areas with the lowest Electrification Ratio but has abundant natural resources for the development of renewable energy power plants. One of the Renewable Energy potentials being developed on Sumba Island is a Micro Hydro Power Plant. Renewable Energy issues are not only in demand supply but also on the sustainability of operation and maintenance. Several villages with electrification programs using Renewable Energy have experienced problems in terms of sustainable operation and maintenance due to the lack of strong institutions that manage the plants that have been built. This research was developed to answer the problems that have been mentioned with the aim of identifying and analysing the aspects that drive the institutional performance of Micro Hydro Power Plant operation and maintenance in Sumba Island, NTT (Nusa Tenggara Timur) Province. The results of the research are important aspects in institutional determination and maintenance that will support the elements of forming a sustainable institutional pattern as input for all stakeholders, especially the government in order to increase the national Electrification Ratio.

Environmental Impacts of Shrimp Farming and Benefit of Pond Intensification for Sustainable Aquaculture: A Review

2021-03-02T06:15:36+07:00

Abstract. The goal of sustainable aquaculture is to provide a continued supply farmed aquatic nutrients beneficial for human sustenance without harming existing ecosystems or exceeding the ability of the planet to renew the natural resources required for aquaculture production (Nevin, 2020). Shrimp is the single most valuable seafood product that enters world trade today. Some of these farms are built in mangrove areas. To accommodate for this high demand farmers, intensify their production, thus effecting the environment by surpassing the areas carrying capacity. Factory farming, has the potential to deplete soils, reduces genetic stock, degrades coastal ecosystems and local water quality. These problems are mainly associated with pondconstruction and operation (Bolanos, 1999). Shrimp aquaculture can be environmentally sustainable with the proper design, operation, management, and monitoring. The use of a closed or recirculating system for growing shrimp is the best method for protecting the environment. Water quality needs to also be checked for both semi-intensive and intensive systems for managing the health of the shrimp and preventing disease and viral outbreaks. PAS offer a potential advantage over other culture systems because waste nutrients can recycle back into a crop, greatly increasing feed-use efficiency. Waste nutrients in ponds are assimilated by endogenous microflora, thereby transforming waste into a potential food source (biofloc). BFT is reliable for the cost effective, environment friendly fish production. BFT is a preferable technique for facing economic, ecological, and social issues relevant to current aquaculture. The system has advantage in intensive farming practices. An important feature of this technology is ammonia wastes are consumed by bacteria for their growth that increases the microbial biomass yield as well as improves the water quality. Previous studies indicated that the addition of probiotics in the water or feed increases growth, immunity, reduces animals to expose pathogenic bacteria and stops the growth of harmful pathogens. There is rapidly growing literature on the application of probiotics which indicates that it is one of the important methods developed to control disease at the farm; therefore, the addition of probiotics is common practice in fish farming (Daniel and Nageswari, 2017).

In Silico Analysis of Sponges Compound Against Mpro COVID-19: A Review

2021-03-02T06:15:58+07:00

Abstract. The novel coronavirus 2019 (COVID-19) is one of the viruses that can infect humans and cause high mortality worldwide. The protease (Mpro) is a key 2019-nCoV enzyme mediate viral replication and transcription. Mpro is currently used as the candidate for the COVID-19 vaccine but yet the interaction of the protein is to be determined. The Mpro can be a target protein to design the drug of COVID19. The drug design from natural products that are considered to have low toxicity is needed against the virus. The aim of this study to determine the potential of some marine compounds against COVID-19 in silico and to find the potential amino acid residues between interaction ligandprotein receptors. The methods of this study use virtual screening of Autodock Vina and study literature to find the action mechanism between ligand and protein receptors. The result of this study was the selected marine compound which may have the potential for 2019-nCoV to be future drugs. The interaction between the best ligand-protein predominant by glutamine and threonine amino acid. The role of glutamine as immune nutrition for recovery patients for some disease and maintain the body back to the homeostasis. Threonine could contribute to inflammatory responses against foreign substances.

Production and Application of Chitosan to Reduce Organic and Heavy Metal Content (Pb and Cd) on the Aquaculture Media

2021-03-02T06:16:12+07:00

Abstract. Chitosan has an amine and hydroxyl groups which can act as coagulants to bind organic and heavy metals from industrial waste into floc forms that are very easily separated from their original media. Shrimp and crab shells waste are used as the raw material for chitosan production, which is obtained from the shrimp processing unit (cold storage) in Pati, Central Java. This research aims to increase the economic value of fishery waste. The principle of extraction for shrimp and crab shells is relatively the same both in physical and chemical treatment. The production process of chitosan is drying to a water content of 10-13%, demineralization, deproteination and deacetylation. The yield in this activity were 14.3% for shrimp shell and 20% for crab shell. The decrease of dissolved organic matter on aquaculture media (water pond) after application of chitosan at 100 mg/L is to 18%. The decrease of heavy metals in aquaculture media was reduced by 20% and 18% for each Cd and Pb metal respectively in the application of 50 mg/L chitosan. In the application of 100 mg/L, the decrease in heavy metal content of Cd and Pb was respectively 29% and 35%. Meanwhile, the decrease in Cd and Pb heavy metal content in the aquaculture media with the application of 200 mg/L chitosan was obtained by 46% and 37%.

Application of Cell Membrane Principles in Molecular Separation Process with Membrane Technology on Food Science

2021-03-02T06:16:30+07:00

Abstract. The cell membrane is a feature in all types of human cells that functions as separator between inside and outside environment of the cell and composed of lipoprotein compounds. The function of cell membrane is to regulate entry and exit of substances from the cell through membrane transport system. There are two types of transport on membrane, passive and active transport. Membrane technology is inspired by the role of cell membranes. Membrane separation is a technique of separating mixture of 2 or more components selectively without using heat between two phases, homogeneous or heterogeneous and having different thicknesses. This review aims to determine the application of separation process with membrane technology in food sector and provide an overview, especially in membrane-based protein separation and purification technology. Membrane-based protein separation and purification technology uses membrane process with force of pressure, including microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO). Various applications of the separation process with membrane technology on food sector are protein separation at the processing of grain products (cereals), dairy products, beverage products, and animal products.

Review: Utilization of Nuclear Technology in Agriculture and Food Sector

2021-03-02T06:16:39+07:00

Abstract. The development of nuclear technology is beneficial for many sectors including farming, health, industry, hydrology, archeology, mining, and agriculture and food. One of the interesting thing to be discussed is utilization of nuclear technology in agriculture and food sector. These sectors are crucial and closely related to the fulfillment of human life needs. This article discussed the use of nuclear technology in agriculture and food. The implementation of nuclear technology in agriculture and food could be found in several things, those are in mutations for plant breeding using gamma irradiation technique, fertilization efficiency using tracer technique, plant pests control using the sterile insect technique (TSM), and food or crops preservation using irradiation technique. By maximizing the utilization of nuclear technology, it is expected that it can increase productivity in the agriculture and food sectors.

Effects of Three Organic Spices (Ginger, Clove, and Turmeric) on the Proximate and Sensory Properties of Tomato Powder

2021-03-02T06:16:47+07:00

Abstract. In this study, the effects of three organic spices (ginger, clove and turmeric) on the proximate and sensory properties of tomato powder evaluated revealed that moisture, ash, crude fiber, fat, protein and carbohydrate content ranged from 15.89 - 18.60%, 5.50 - 7.41%, 5.32 - 7.41%, 4.10 - 4.59%, 11.40 - 14.65% and 51.33 - 52.47% respectively. The increase in the proportion of organic spices decreased the moisture content and protein content while increasing significantly the ash and carbohydrate content of the samples. However, the fat content of the control and sample DDD were significantly different (P?0.05). The increase in the ash content of the supplemented samples could be attributed to the minerals and phytochemical abundance in organic spices. Generally, consumer’s preference decreased with increase in the proportion of organic spices. This could be because the products are novel to most people.

Effect Contact Time Adsorption of Naphtol Dye Using Humic Acid Adsorbent Result of Peat Isolation from Kalimantan

2021-03-02T06:16:58+07:00

Abstract. Adsorption of naphtol dye was carried out by using humic acid adsorbent from the isolation of Kalimantan peat. This study aims to determine the effect of the adsorption contact time on humic acid naphtol dyes from Kalimantan peat isolation. The purified humic acid isolation was characterized using Fourier Transform Infra-Red (FTIR), Scanning Electron Microscopy (SEM), Optical Microscopy, total acidity measurement, and measurement of -COOH (carboxylate) and -phenol OH groups. The characterized humic acid was then used as an adsorbent to adsorb the naphthol dye solution. The adsorption process was measured using a UV-Vis spectrophotometer to determine the concentration of adsorbed naphthol dye. The adsorption study of the research results showed that the optimum adsorption time of naphthol dye to humic acid was 45 minutes, this was because almost all naphtol dyes were adsorbed on humic acid.

Science Learning Based on the MIKiR Approach Assisted by WhatsApp for Junior High School Students

2021-03-02T06:17:06+07:00

Abstract. The Covid-19 pandemic has created various learning challenges. WhatsApp as one of the most popular messaging applications supports improvement communication between the teachers and students in distance learning during the Covid-19 pandemic. The MIKiR apparoach is one of the learning approaches that consists of four stage namely Mengalami (experiencing), Interaksi (interaction), Komunikasi (communication), and Refleksi (reflection). This study aims to analyze the implementation of the MIKiR approach on science learning assisted by WhatsApp. The method used in this research is descriptive qualitative approach. This research was conducted in MTs Darul Ishlah Sukorejo, Kendal Regency, Central Java. The subject of this research was 25 seventh grade students. Technique of collecting data was through observation, questionnaires, and documentation. The results showed that the students carried out science learning using the MIKiR approach. This study concluded that students have done active learning by applying four stages, but the quality of implementation must be improved. The participation of each students is varied due to the difference of availability of mobile device, internet network access includes data package, parental support, and self-motivation.

Development of Phylum Mollusca Picture Cards as Learning Media

2021-03-02T06:17:15+07:00

Abstract: The process of remembering, understanding, and mastering the concept of material can be done more interestingly through pictures. Pictures can have a positive impact in helping the child's learning process in memory skills and can improve communication skills. This study aims to determine the feasibility level of the picture cards that have been developed. the research method used is research and devolopment (R&D). Research on the development of Phylum Mollusca picture cards using the application microsoft word and microsoft power poin. Medium assessment was carried out by one material expert, one medium expert, five peer reviewers, one biology teacher as a reviewer, and 15 grade x students. Meanwhile, the results of development research indicate that the quality of the invertebrates picture cards developed is in the very good category (SB) according to material experts with an ideal percentage of 89.33%, Good category (B) according to medium experts with an ideal percentage of 77.17%, Very good category (SB) according to peer reviewers with an ideal percentage of 90.8%, and biology teachers 86%. Thus it can be concluded that this media is declared fit for use as a medium for learning biology.

Comics as Learning Medium During the Covid-19 Pandemic

2021-03-02T06:17:24+07:00

Abstract: This development research aims to develop products in the form of learning media which are packaged in the form of digital comics. The development method used is R & D-4D and comic design using Adobe Pothoshop and Comic Life software. Then to test the feasibility of the media, validation was carried out regarding the material and design. The development of learning media in the form of digital comics aims to facilitate teachers and students in the learning process and parents of students in accompanying their children to study at home during the Covid-19 pandemic. This research succeeded in developing comic learning media based on the scientific approach for class students. IV on the material around the rectangle in jpg and pdf format, so that it can be accessed via Android-based mobile phones. The percentage of validation test design experts and material experts was 81.667% and 83.571%. This shows that the media developed is suitable for use as learning media.

USE OF APPLICATION BASED MODULE ON ADDITIVE AND ADDICTIVE MATERIALS FOR LEARNING ACTIVITIES DURING PANDEMIC COVID -19 (Study at a Student of Junior High School Muhammadiyah 1 Sleman)

2021-03-02T06:17:31+07:00

Abstract: The use of modules as a medium for learning at the school level is commonly used. The module serves to assist educators in delivering material. Therefore, the module must have good quality in terms of material and design so that students can more easily understand the material presented. At this time, the module is expected to be able to help students understand the material, because during the Covid-19 pandemic, students were asked to do learning activities at home. The material is delivered by the teacher online through the WhatsApp group during the learning hours. This study examines the material additives and addictive substances delivered to class VIII students. The object of this research is the VIII grade students of junior high school Muhammadiyah 1 Sleman which consists of three classes. The purpose of this study was to determine the level of students' understanding of additives and addictive substances.

The Development of The Physics Module with Scientific Process Skill Approach (SPS) to Uniform Circular Motion Learning Materials 10th Grade at MAN 1 Magelang District

2021-03-02T06:17:37+07:00

Abstract. The purpose of scientific research is to develop a module with a skills process approach to enhance cognitive, affective, and psychomotor concurrently. This study also aims to see the quality of the modules that have been developed. The method used is a researchbased development or development method with the 4D model developed by Thiagarajan, Shivasailam, et.al. The physics module is developed using a science process skills approach. The instruments used in this study were questionnaires, observation sheets, validation sheets, and sheets. The analysis used in the validation sheet is descriptive. Assessment of the quality and response of students to the physics module using a scale of 4 made in the form of a checklist. The results showed 1) the physics module has been developed with a science process skills approach. 2) the physics module with the science process skill approach according to the criteria is very good seen from the results made by material experts with an average of 3.55; a media expert with an average of 3.36, and a physics teacher with a score of 3.52. Also, the results of the limited test student response state that this physics module agrees to be used.

Educating Children at Industrial Revolution: An Islamic Reflection

2021-03-02T06:17:47+07:00

Abstract. Education is something that must be obtained by everyone, because actually education will be beneficial throughout life. Humans as creatures of God are given reason, but they forget that not only with human reason can be smart without being accompanied by effort. Education is a human activity that intends to fully develop individuals. Islam is a religion that places great importance on human education. This is evident to many in the Qur'an and hadith which are the main sources of Muslims. Which of these two sources is a guide in educating children for parents to make their children a pious child. However, many parents forget the potential of a child so that, they are wrong in educating their children, and it makes it difficult for children to grasp the knowledge taught by their parents.

Analysis of the Effectiveness of Online Learning in the Middle of the Covid-19 Outbreak

2021-03-02T06:17:56+07:00

Abstract: The Covid-19 pandemic has disrupted the conventional learning process, thus affecting the world of education in Indonesia, including the implementation of lectures at the Biology Education Study Program at UIN Sunan Kalijaga Yogyakarta, so a solution is needed to answer these problems. Online learning is an alternative that can overcome this problem in an effort to reduce the spread of Covid-19 in the campus environment. The purpose of this study was to obtain an overview of online learning in the Biology Education Study Program at UIN Sunan Kalijaga Yogyakarta during the Covid-19 pandemic. Data were collected by interview via zoom cloud meeting. Data analysis was performed using interactive analysis techniques Miles & Huberman. The results showed that: (1) online learning has flexibility in its implementation and is able to encourage independent learning and motivation to be more active in learning; (2) students already have the basic facilities needed to take part in online learning; and (3) distance learning encourages the emergence of social distancing behavior and minimizes the appearance of student crowds so that it is considered to reduce the potential for the spread of Covid-19 in tertiary institutions. Weak supervision of students, lack of strong signals in remote areas, and high quota fees are some of the challenges in online learning. Increasing independent learning, interest and motivation, courage to express ideas and questions are other advantages of online learning.

Study of Completeness and Utilization of Biology Laboratories as Supporting Biology Learning Activities of State Madrasah Aliyah (MAN) in Sleman Regency

2021-03-02T08:28:53+07:00

Abstract: The laboratory is one of the learning infrastructure that can be used to conduct practicum, research, and to improve skills in conducting scientific experiments. This study aims to determine the level of completeness and usefulness of biological laboratory equipment, as well as to determine the intensity of the use of biological laboratories in supporting biology learning in State Madrasah Aliyah throughout Sleman Regency. The sample used, namely 4 MAN includes 103 students of class XI IPA, 3 Heads of Laboratory and 4 Biology teachers. This research is a survey research with a quantitative descriptive approach. Data collection techniques were carried out using observation sheets, questionnaires, and interview sheets. Based on the results of the data analysis, the research showed that the level of completeness of laboratory equipment in MAN in Sleman Regency was 58.5%, while for laboratory conditions the percentage was 96.4%. As well as the level of usefulness of the biology laboratory in supporting learning activities, the result was 78.8%. The intensity of using biological laboratories in MAN in Sleman Regency obtained results with a percentage of 56, 2%. Based on these results, the biology laboratory needs further attention so that it can be improved again so that learning can be achieved optimally.

Empowering Student’s Activity with ICT: Case of Weekly Discussion in University of Darussalam

2021-03-02T06:18:14+07:00

Abstract. In the Covid-19 era, almost everything was done online. Likewise student discussion activities. At Darussalam University, all students are required to take part in weekly discussions. That is supervised by semester 7 with supervision from the presenters lecturer. This field research collected data on students' weekly discussions, as well as techniques in improving the quality of their literacy. This study resulted in the finding that discussion management can be carried out using an online system. The platform used is Google. Especially drives and email. Google Drive is used as a material bank and discussion reference along with the schedule of the presenters. Google Forms is used for monitoring absent activities and documentation.

Some Reflections on HOTS dimension of Education in Prophet's Era

2021-03-02T06:18:20+07:00

Abstract. The development of Islamic teachings in Prophet Muhammad SAW and his companions was the development of the peak of its heyday, it can be seen how the purity of Islam itself, with the main actors and factors, namely Prophet Muhammad SAW. When viewed from various scientific aspects, it is clear that the guidance of the Prophet Muhammad towards Muslims at that time reflected a Higher Order Thinking Skill; with its aspects are critical thinking, creativity, communication, and collaboration. Through the encouragement of revelation to "think" and carry out scientific activities as well as generate good charity for others. This literature research takes data in the form of literature on the history and models of education in the era of the Prophet based on the Sirah Nabawiyah literature. This study found that the HOTS aspect of the Prophet's guidance was reflected in the liberation of humans from myths (encouraging critical thinking), amar ma'ruf nahi munkar and helping others, to honesty in various matters. All of them systemically result in Muslims being motivated to do good deeds in various creative forms. From the events of the hijrah to his victory in various wars to fight for Islam.

Validity of Learning Material About Particle Dynamics Contained Quranic Verses Using Direct Instruction Model

2021-03-02T06:18:31+07:00

Abstract. The use of learning materials contained Quranic verses in physics subject will contribute to train and optimizing problem solving skills to students. This article aims to describe the validation of learning materials of particel dynamics contained Quranic verses using direct instruction teaching model. The development research used ADDIE model with learning materials as the subject of the research and validity data and suggestions for improvement by 3 academics and 2 practitioners. Validation is one of the processes at the part of the development stage. The validity of learning materials is measured using a validation sheet dan then determined based on validation by expert which are stated or invalid. If valid, it will be categorized again as very high, high, enough, low, and very low. The conclusion of this article is learning materials contained Quranic verses using direct instruction teaching model is valid and categorized as very high. Based on data analysis, it can be concluded that learning materials are eligible to be used in learning process.

Bibliotherapy as An Alternative to Reduce Student Anxiety During Covid-19 Pandemic: a Narrative Review

2021-03-02T06:18:39+07:00

Abstract. Anxiety was a normal thing in life because anxiety is needed as a sign of a threat that threatens. If anxiety occurs continuously, irrationally, and the intensity increases, then anxiety can interfere with daily activities called anxiety disorders. During the current Covid19 pandemic, anxiety has also arisen in students which results in students being pressured to interfere with their daily activities during the Covid-19 pandemic. Reading can be used as a medium to help reduce student anxiety which is called bibliotherapy. This study aims to discuss bibliotherapy as an alternative to reduce student anxiety during the Covid-19 pandemic. This paper uses a literature study approach using content analysis. The findings of this study are that the anxiety faced by students during the Covid-19 pandemic is caused by psychological factors, physical factors, economic factors, environmental factors, and resource factors. Through bibliotherapy, it is hoped that it can reduce student anxiety during the Covid-19 pandemic with five stages including identification, selection, presentation, reading, reading, and follow up.

A Review of Mindfulness Therapy to Improve Psychological Well-being During the Covid-19 Pandemic

2021-03-02T06:18:51+07:00

Abstract. The existence of Covid-19 is a stressor for individuals which results in psychological problems such as anxiety, fear, and stress. These various psychological problems can affect the body's immunity to fight diseases caused by Covid-19, so it is very important to create a community order that can achieve psychological well-being so that it is tough in facing Covid-19. Efforts to develop psychological well-being in dealing with Covid-19 can be done by utilizing Mindfulness Therapy. The writing of this article uses a literature study. Using mindfulness therapy can effectively develop psychological well-being in dealing with Covid-19.

Barriers of using Hospital Information System for Decision-Making: A Qualitative Study

2021-03-02T06:18:58+07:00

Abstract. Information technology applications play a major role in improving the services provided to patients in healthcare settings. Hospital Information System (HIS) is expected to facilitate information management and decision making, thus enhancing patient services. Purpose of this study is to explore the barriers that healthcare practitioners in PKU Muhammadiyah Bantul Hospital faces during using HIS for decision making. Method: This research is a qualitative study. Depth-interviews were carried out with six respondents (Two Clinicians, Three Managers, and One Director), interviews were recorded and transcribed for analysis, a list of codes has produced representing themes identified in the textual data. Results: Data in the HIS were not optimal due to the insufficiency of the system in generating the necessary information for decision-making. Raw data, not real time data, and incomplete data between units were the most barriers that decision makers faced. Conclusion: One of the crucial keys of a good performance of healthcare providers is hospital information system that ensures the production, analysis, and providing a reliable and timely information, making it easy for managers and doctors to make managerial and clinical decisions more effectively.

The Role of the Ngunduh Tradition in the Conservation of Swallow's Nests in Karangbolong Village, Kebumen Regency of Central Java, Indonesia

2021-03-02T06:19:10+07:00

Abstract. The Ngunduh tradition of swallow's nest is a tradition that has been passed down from generation to generation by people in Karangbolong Village, Buayan District Kebumen Regency. This ritual tradition is carried out so that the implementation of taking swallow's nest runs smoothly and avoid disaster. According to the myth that circulates, taking swallow's nest without ceremony or ritual will result in accidents and even death. The purpose of this study is to determine the Role of Ngunduh Tradition in Conservation of Swallow's Nests in Karangbolong Village, Buayan District, Kebumen Regency of Central Java, Indonesia. This study uses a qualitative method with a literature study approach. Apart from that, to support the data, interviews were also conducted with people who have been involved in taking swallow's nests. Based on the results of interviews and literary studies that have been conducted, the concept of conservation already exists in the tradition of taking swallow's nest. The Ngunduh tradition that has been preserved by the community will have a positive impact on the existence of swallows in Karangbolong. The belief in the Ngunduh ceremony before harvesting swallow's nest is a myth that is very useful in preserving nature. This tradition will be a part of the life of the local community because it is accompanied by spiritual beliefs and strengths related to the existence of swallow's nest in Karangbolong cave.

Islamic Worldview for Ethical Dimension of Islamic Communication

2021-03-02T08:43:10+07:00

Abstract. Islam as a universal religion is a religion that does not only contain values and spiritual aspects and a set of rituals of worship. But more than that as proof of its universality, Islam is capable and proven to be able to penetrate various lines and boundaries of geographic and cultural cultures, as well as various scientific fields and the science of communication is no exception. Ethics as the basis of religion in social life has a close relationship with the tradition of communication science, because communication science is a practical science that cannot be separated from people's life. The dynamic condition of modern society has influenced this science. Digital media which is an important part of modern society as a means of communication has made communication science follow its development. And this is the reason why ethics in social life with ethics in social media in the midst of modern society cannot be separated, which is the main object of discussion in this paper.

Homomorphic Encryption and Its Application in Modern Day World

2021-03-02T06:01:50+07:00

Abstract. As IPv6 drastically increased the number of devices connected to the internet from 8.4 billion in 2013 to around 30 billion in 2020, it enabled different entities such as governmental, health, research institutions, hospitals, banks or even individuals to generate and collect data that is expected to be 44 ZB in 2020, up from 4.4 ZB in 2013. In this sense, banks collect different information about users’ transactions, which can be utilized to track fraud transactions or tax evasions, however in the process they compromise users’ privacy by looking into private data such as credit card numbers, amount of money transferred, etc. Research labs and facilities collect samples of human genomes of individuals, which can be used to detect patterns in genes responsible for diseases, pandemics, etc., but in the process they violate the privacy of those individuals since the genome data reveals sensitive private information related to the same individual, such as fingerprints, biometric data, country or family origin etc. Hospitals and health facilities collect data about patient diseases, which can be utilized to correctly diagnose un-diagnosed patients, but in the process they jeopardize patients’ private data which is protected by law. To mitigate those problems, the above mentioned entities use homomorphic encryption (HE) schemes to encrypt those private data before storing them to third parties. They do so since HE schemes allow processing and calculations to be done on encrypted data (ciphertext) without decrypting it. To this ends, HE allow the entities to retrieve beneficial information from those data without compromising their privacy, objectives which a few years ago were considered to be mutually exclusive. We give the mathematical problems assumed to be hard upon which several HE schemes are based on, such as discrete logarithm, quadratic residue, Ring Learning With Errors (RLWE), etc. Since RLWE is proven to be secure under quantum computers, HE schemes based on RLWE (such as FV and BGV) are part of the so called post-quantum cryptography. Then we introduce the three types of HE schemes, namely 1) partially HE schemes (such as elGamal and Paillier), which allow only one type of homomorphic operation on the ciphertext (either addition or multiplication), which are represented with cryptosystems; 2) Somewhat homomorphic schemes (such as the FV scheme), that allow two types of operations on the ciphertexts (usually addition and multiplication), but the number of such operations is limited, and 3) Fully homomorphic schemes (such as BGV) that allow un-limited numbers of two types of operations on the ciphertexts (usually addition and multiplication). Finally, we give some real world application of HE schemes, such as: privacy-preserving finance, private genome analysis, secure e-voting, privacy-preserving machine learning and data mining algorithms, cryptocurrencies, private database querying, secure graph theory, etc.

Pharmaceutical and nanotechnological contributions in The Ever-Changing World: COVID-19 Pandemic

2021-03-02T06:02:12+07:00

Abstract. We are living exiting times in terms of scientific development. However, science is facing different challenges that force researchers to work harder and faster, such as seen in the global race for the COVID-19 vaccine due to the pandemic. Currently, nanotechnology is at the forefront of scientific innovation, where basically, all gained knowledge can apply to any research field. Electrospun nanofibers are a nanotechnological advance that will greatly contribute to different disciplines. These nanostructures/nanomaterials are obtained through the electrospinning technique and can be employed for biomedical and bioengineering applications, providing solutions as scaffolds for tissue engineering, spinal cord injuries, biosensing technologies, and to current drug delivery inconveniences as well. Additionally, these nanofibers are being studied for the development of filters to overcome SARS-CoV-2 capture limitations shown by N95 and N98 masks. Another relevant nanotechnological approach is based on gold and silver nanoparticles. These metal nanoparticles have exhibited antimicrobial activity suitable for the agricultural area, water treatment technologies, and delivery of nanopesticides, nanoherbicides, and nanofertilizers for more sustainable development of the agroindustry. Regarding the pharmaceutical industry, many companies are working along with biomedical and biotechnological institutions, supporting the development of biosensors for rapid detection of clinical pathogens (e.g., bacteria and virus) and infection diagnosis at the point-of-care. Furthermore, some companies are developing formulations based on remdesivir and dexamethasone, which have demonstrated to reduce the hospitalization time of COVID-19 patients. However, the remdesivir patent is still active, which has resulted in high prices for developing the treatment. Another active pharmaceutical ingredient under study is the favipiravir, although it is not approved by the FDA the initial studies suggest promising safety data. It is clear that the combination of pharmaceutical sciences and nanotechnology can speed up scientific research in the way of developing safer and higher quality treatments and diagnosis technologies.

Nutritional Assessment of Cakes Developed by Incorporating Partially Defatted Peanut Flour in The Process

2021-03-02T06:02:29+07:00

Abstract. In Benin the residue of peanut oil extraction is very useful. This partially defatted peanut flour produced by mechanical pressing have many potentials uses in foods. The defatted peanut flour has a high protein solubility and is light colored, practically tasteless, and odor free. The defatted peanut flour has been evaluated as: an additive to increase the protein content of foods such as bread and other baked foods. The aim of this study was to assess the effect of substitute partially defatted peanut flour (PDPF) flour in place of wheat flour (WF) on the nutritional and sensory properties of plain cake and eggless cake. Four formulations without control of each types of cake were prepared by incorporating partially defatted peanut flour at different levels (10-20%). The partially defatted peanut flour was prepared from their dried and roasted peanut. The developed products were evaluated for sensory attributes by using nine point hedonic rating scale and nutritional composition of the products was assessed by using standard methods. At 10 percent, plain cake and eggless cake were more acceptable with overall acceptability being 7.88, 7.92. The developed products were found to be highly nutritious in terms of protein, iron and calcium. The developed products with incorporation were found to be comparable to their respective control samples in terms of proximate analysis except for protein, fibre and calcium content which significantly increased in all the products. From the various fortified products, eggless cake showed a maximum protein content i.e. 10.59 percent. Fat for all products significantly increased as compared to their respective control samples. Maximum fibre content and ash content was found in eggless i.e. 0.58 g/100g and 1.55mg/100g respectively on dry weight basis. The highest energy content was found in plain cake as 519.82 Kcal. The maximum calcium content was found in eggless cake as 65.63 mg/100g. Value added baked products using peanut flour can be supplemented to the community to improve the nutritional status. Keeping in view the nutritional value of peanut flour, it can be highly recommended to the bakery industry to incorporate peanut flour in their products and thus improve its nutritive value. Keywords: Cake, Nutritional composition, Partially defatted peanut flour.

Cover, Editorial Board, Welcome Speech, Table of Contents, Guidance for Authors

2021-03-02T06:01:47+07:00