Indonesia Conference Directory

Corresponding Author
irwandi Irwandi

Institutions
Universitas Syiah Kuala, Banda Aceh
BMKG Mata Ie, Banda Aceh

Abstract
After Palu Earthquake on September 2018, another earthquake have occured in Banggai Islands which located very close. The Earthquake occurred on shallow depth which caused by thrusting or vertical relative mechanism on Central Sulawesi tectonic system. To understand the tectonic system in Banggai Islands we present a 1-D velocity model of the Earth crust obtained by solving the coupled hypocentre-velocity inversion for 651 local earthquakes recorded at a regional network in Central Sulawesi. A total of 651 earthquakes were selected based on azimuthal gap, minimum number of stations, and root mean square travel&

Keywords
Thrust, Velocity, Magnitude, Inversion, Stress and Energy

Topic
Applied Basic Science and Multidisciplinary

Link: https://ifory.id/abstract/XpHA2cNPdkGZ

Corresponding Author
Tri Andri Hutapea

Institutions
Universitas Negeri Medan

Abstract
This study aims to produce product findings from the activity development program for students problem solving abilities based on information and communication technology. The method used in this research is research and development methods. The stages of program development are survey, planning, validation, and socialization. The research subjects were students of Medan State University. The activity development program for students problem solving abilities based on information and communication technology has not yet considered the planning, implementation and evaluation of activities. The final product of this research is a valid program about the ability to solve problems based on information and communication technology.

Keywords
Problem solving, information and communication technology

Topic
Computer Applications and Information Sciences

Link: https://ifory.id/abstract/jzphYeN2cXWK

Corresponding Author
Marham Sitorus

Institutions
a) Department of Chemistry, Universitas Negeri Medan, Medan 20221, Indonesia
*marham.sitorus[at]gmail.com

Abstract
Malondialdehyde (MDA) is a metabolite resulting from lipid peroxidation by free radicals that can be formed when hydroxyl free radicals such as Reactive Oxygen Species (ROS) react with fatty acid components of the cell membrane so that a chain reaction is known as fat peroxidation. The fat peroxidation will break the chain of fatty acids into various toxic compounds and cause damage to the cell membrane. Thus MDA is an indicator of the presence of free radicals in the body. In this research, the Conjugated Linoleic Acid (CLA) antioxidant test was synthesized from castor oil in vivo against Wistar rats. Wistar rats were exposed to free radicals through cigarette smoke for 2 hours per day for 14 days. Mice were given an antioxidant intake of CLA with a concentration of 200, 400, 600,800,1000 mg / body weight every day with three repetitions. The same thing is done with intake of Ascorbic Acid (Vitamin C) and &

Keywords
MDA; CLA; Free Radicals and Inhibition

Topic
Biochemistry, Biotechnology and Pharmacy

Link: https://ifory.id/abstract/tdnJ7E64PKuv

Corresponding Author
Rahmatsyah Rahmatsyah

Institutions
Universitas Negeri Medan

Abstract
The clam hill site is a prehistoric relic which is a pile of million pieces of shells. Disclosure of the fact the formation of the clam site is essential to study. The purpose of this research is to analyze the subsurface area of the Clam Site in Aceh Tamiang. The Wenner-Schlumberger as a type geo-electric method is used in this research which contains six passes. The length of track is 155 m using 32 electrodes with a distance between the electrodes 5 m. Res2Dinv Software and Surfer11 software are used to process the geo-electric data. The results of the analysis obtain the resistivity value of the pile of shell is between 19,5 &

Keywords
Clam Hill Site, geo-electric, resistivity, Tamiang

Topic
Fundamental and Applied Sciences

Link: https://ifory.id/abstract/vFdK7GnDbVEu

Corresponding Author
Jeddah Yanti

Institutions
(a) Department of Physics Education, State University of Medan, Indonesia
(b) Department of Physics, State University of Medan, Indonesia
*jeddahyanti93[at]gmail.com

Abstract
PISA competency framework has been gained global recognition from 2006 and was developed until the latest version in 2015. PISA competency emphasis is classified into three competencies standard, such as Explaining scientific phenomena, Evaluating and designing scientific inquiry, and Interpreting scientific data and evidence, finally, summarizing research findings. All of the PISA standard competency is reflected in each of the three types of knowledge consist of Content knowledge, Procedural knowledge and, Epistemic knowledge. PISA science assessment is based on science literacy. This article will analyze the three competencies of PISA science literacy determined by each knowledge in basic physics topics such as wave. Furthermore, the subject matter refers to wave phenomenon, types of wave, the magnitude, the formula, superposition of wave, reflection and refraction, resonance, and the energy of wave.

Keywords
Competency, Science literacy in PISA, Wave science

Topic
Applied Basic Science and Multidisciplinary

Link: https://ifory.id/abstract/rtUAhdEQ8DGN

Corresponding Author
Rizki Nursa-adah

Institutions
Program Studi Pendidikan Fisika, Pascasarjana Universitas Negeri Medan

Abstract
This study aims to determine the quality of physics objective test High Order Thinking (HOT) in the temperature and heat material that fulfills good qualifications which include aspects of validity, reliability, level of difficulty, differentiating power and effectiveness of deceivers used in the learning assessment process as learning evaluation materials. This research includes research development (research and development) with the Borg and Gall model. Distribution of material in research on expansion, heat relationship with object temperature and shape, the principle of Black, heat transfer, ideal gas and thermodynamics. From each question material, several competency questions are obtained as a reference in making questions. This HOT test can be used as a standard test to measure students high-level abilities on high temperature and heat material in high school.

Keywords
HOT, Temperature and Heat, Validity, Reliability.

Topic
Applied Basic Science and Multidisciplinary

Link: https://ifory.id/abstract/yvXeNZB9VGUk

Corresponding Author
Jonathan H Hutapea

Institutions
Physics Education Program, Postraduate State University of Medan

Abstract
This research aims to construct the problem solving ability test questions on basic physical dynamics material according to standards of good test qualifications in terms of validity, reliability, difficulty index and discrimination index. This type of research is development research using research and development methods of Borg and Gall model. The sample in this study were all semester 2 students physics education program of Medan state university. The results of this research indicate that of the 40 questions developed, 14 questions have met the criteria of good questions based on theoretical and empirical analysis. The fourteen questions can be used to measure the ability to solve problems with basic competence to provide solutions to the, (1) material moment of force, (2) moment of inertia, (3) equilibrium, (4) centre of gravity, (5) the law of conservation of angular momentum and (6) the application of Newtons law.

Keywords
Problem solving, ability, test, physics, dynamics

Topic
Fundamental and Applied Sciences

Link: https://ifory.id/abstract/TVZA34xpcKDr

Corresponding Author
tukiran surbakti

Institutions
Center for Nuclear Reactor Technology and Safety, BATAN,
Kawasan PUSPIPTEK Gd. No. 80 Serpong, Tangerang Selatan, 15310 Indonesia

Abstract
The RSG-GAS is using U3Si2-Al dispersion fuels with uranium density of 2.96 gU/cc. The silicide uranium fuels is not used anymore for the future. To anticipate the usage of other fuels in the RSG-GAS core, UMo-Al fuels were chosen. The UMo-Al fuel has many advantages some of them, it can be used at higher density in the reactor core. There are high uranium densities in UMo-Al dispersion fuels up to 16 gU/cm3 with numerous contents of Mo. In this analysis, the RSG-GAS core is used with high density of UMo-Al fuel. The neutronic parameter are such as reactivity balances, keff and power peaking factor and safety reactivity factor of UMo-Al fuel with higher density. The UMo-Al core criticality data are achieved by calculation using Batan-FUEL code. The UMo-Al fuel macroscopic cross-section data as the output of cell calculation WIMSD-B5 (ENDFVII.0) were used for the calculation. The core calculations were performed using 2 and 3 dimension diffusion code. The calculation results show that the good fuel for RSG-GAS is U7Mo-Al with maximum radial and axial power peaking factor of U7Mo-Al with high density at 20 cm control rod depth is 1.32 and 1.73 respectively and safety reactivity factor more than 1.5. The results show that all neutronic parameter are met the safety criteria. Hence U7Mo with higher density could be applied for RSG-GAS core and operated for 1500 MWD cycle length

Keywords
UMo-Al fuel, neutronic parameter, core reactivity, Batan-FUEL code, RSG-GAS core

Topic
Applied Basic Science and Multidisciplinary

Link: https://ifory.id/abstract/LzxrCkhb87Dy

Corresponding Author
edo barlian

Institutions
a).universitas negeri medan; jl.wilem iskandar psr V medan
b).Universitas Sumatera Utara; Pasca Sarjana Program doktor Perencanaan Wilayah; JL. Dr. Masyur Medan

Abstract
In supporting the objectives of the urban zone spatial plan necessary a study of preparedness to geological natural disasters especially areas located in active fault zones to reduce the risks that will occur and prepare serious mitigation studies on disaster management with prevent, reduce risk and increase community preparedness in the face of disasters. Part of the Deli Serdang Regency is an area located in the active fault zone, in part of Pancur Batu District and parts of Namorambe District. Based on these conditions, it is necessary to look at the impact caused by active faults on the development of the area around the fault zone. The method used in this study is a quantitative method by requiring seismic hazard data which includes Peak Ground Acceleration (PGA), earthquake risk level, frequency of earthquake events, earthquake strength and seismic hazard assessment. From the results of the analysis, it is necessary to make prevention around the area that has an earthquake disaster so that it can reduce the impact of disasters in the long term and mitigation in the response in the event of a disaster by applying the Zoning Regulation and Building Code

Keywords
regional planning, fault, earthquake

Topic
Applied Basic Science and Multidisciplinary

Link: https://ifory.id/abstract/DRGXuxH9N4tV

Corresponding Author
Satia Negara Lubis

Institutions
a) Agribusiness Study Program, Faculty of Agriculture, The North Sumatra University, Indonesia.
*satia_waspada[at]yahoo.com
b) Undergraduate of Agribusiness Study Program, Faculty of Agriculture, The North Sumatra University, Indonesia.
c) Departement of Mathematics of Faculty of Mathematics and Sciences of State University of Medan, Indonesia

Abstract
Crude Palm Oil (CPO) is one of the agricultural commodities which is a mainstay in country foreign exchange reception managed by national private plantation, private plantation and publics plantation. The objective of the research was to analyze the CPO cost price and to analyze how much profit from CPO production at Sei Silau palm oil mill. Data used in this study are primary and secondary data. The research method used in this research is the method of cost and profit. The results showed that the CPO cost at PT. Perkebunan Nusantara III of the Sei Silau Palm Oil Mill was high, this was due to the high cost of purchasing FFB (Fresh Fruit Bunches) at Plantation of the Se induk. And PT. Perkebunan Nusantara III the Sei Silau Palm Oil unit in December 2018 got the benefit, because the CPO cost was lower than the selling price of CPO

Keywords
Crude Palm Oil (CPO), Cost Price, Profit

Topic
Fundamental and Applied Sciences

Link: https://ifory.id/abstract/XPnk6wGfCNEx

Corresponding Author
yaumil silvini

Institutions
1. Physics Education Study Program, State University of Medan
2,3. Lecturer in Physics Education, State University of Medan
Jl. Willem Iskandar, Pasar V Medan Estate, Percut Sei Tuan, Deli Serdang, Medan, Indonesia
*yaumilsilvini92[at]gmail.com

Abstract
Physics is the science that studies an object, and interactions between objects, also studies natural phenomena that include matter, space, and interactions between humans. Human interaction is related to culture and customs that are inherent in peoples lives. Every region in Indonesia has different customs and customs in the community. Aceh is one area that has diverse customs in the way of making food, playing games and using its musical instruments. The culture of peoples original knowledge relating to scientific physics knowledge is called ethnoscience. The study examines, analyzes the application of the concepts of temperature and heat and impulse momentum in Aceh culture. The method used is a literature study with study materials including (1) Acehnese unique culture of kekuriken, and (2) Acehnese Pisang sale typical food.

Keywords
The concepts of temperature and heat;impulse momentum;ethnoscience and Aceh culture

Topic
Applied Basic Science and Multidisciplinary

Link: https://ifory.id/abstract/PYen6u39zCNw

Corresponding Author
Aisyah Aisyah

Institutions
Physics Education, Postgraduate State University of Medan (a)

Lecturer Department of Physics Education, Postgraduate State University of Medan , Medan, Indonesia (b)

Abstract
this study aimed to determine the increase in student activity through a blended learning approach in physics using augmented reality. This type of research is a classroom action research with a population of all students in Deli Serdang Regency. The research instrument used was a student observation questionnaire and Student Activity Sheet. The results of data analysis explained that the blended learning approach in physics using augmented reality can improve student learning activities.

Keywords
Blended Learning, Augmented Reality, Activity

Topic
Multimedia and Technology Information

Link: https://ifory.id/abstract/etHW6vJqGcuM

Corresponding Author
Novitasari Novitasari

Institutions
a). Electromedical Research Group, Research Center for Quality and Testing Technology LIPI, Indonesia
*novitasari[at]lipi.go.id
Faculty of Medicine and Health Sciences, Warmadewa University, Indonesia

Abstract
Anthropometry is the most universally applicable, inexpensive, and non-invasive method available to evaluate the proportion, size and composition of the human body. Many research shows that elevated blood pressure and excess weight are established major risk factors for cardiovascular disease (CVD). The preliminary studies addressed issues raised by this relationship. These included the strength of relationship between hypertension and aging, cigarettes smoking, physical activity, the prevalence of hypertension at various levels of obesity, and blood glucose. On the other side, the accuracy of sphygmomanometer is crucial to give the true value of blood pressure. The failure of sphygmomanometer can change blood pressure classification in these patients. In this study, we evaluate the correlation between body weight, aging and blood pressure value as preliminary study to get the critical value of sphygmomanometer calibration. The interactions between blood pressure and body weight and aging were examined using data from 100 participants. Either the systolic and diastolic blood pressure was examined with body weight and age, then the cardiovascular disease (hypertension risk) analyze using WHO classification of blood pressure range. The correlation between blood pressure (both systolic and diastolic) with body weight shows the negative correlation (p<0.05). The odds ratio for hypertension increased by 10% for each additional body weight, compared to 6% for each year increase in age. The correlation between blood pressure with body weight is negative. Furthermore, the association between blood pressure and body weight is higher than age. It is found the new paradigm about critical value of sphygmomanometer calibration, the calibration should have specific range for the certain body weight.

Keywords
Blood pressure, body weight, spyhgmomanometer

Topic
Applied Basic Science and Multidisciplinary

Link: https://ifory.id/abstract/Q6Ah3fE7LeaB

Corresponding Author
tukiran surbakti

Institutions
National Atomic Energy Agency (BATAN)
Center for Nuclear Reactor Technology and Safety, BATAN,
Kawasan PUSPIPTEK Gd. No. 80 Serpong, Tangerang Selatan, 15342 Indonesia

Abstract
The principal objective of this study is to formulate an effective optimal fuel management strategy for the RSG-GAS research reactor for equilibrium core. The core management study has been performed by utilizing four basic types of information calculated for the RSG-GAS reactor such as criticality, power peaking, neutron flux and burn-up calculations. This paper presents the results of the burn-up calculations for RSG-GAS LEU fuel elements. The fuel element burn-up using in-core fuel management of operation was calculated using the BATAN-FUEL code. The calculation is performed in one-dimensional radial geometry in WIMSD-5B code using ENDFBVII.0 nuclear data file. The criticality, neutron flux and burn-up calculations were using the Batan-2DIFF code and power peaking factor calculation was using Batan-3DIFF code. The results with this calculations show very good agreement with the experimental data. Reshuffling at 15 MWt step provides the highest core lifetime of the reactor, which is 630 MWD. Besides, the study gives valuable insight into the behaviour of the reactor and will ensure better utilization and operation of the RSG-GAS reactor in future.

Keywords
burn-up analysis, RSG-GAS reactor, Batan-FUEL, fuel elements

Topic
Fundamental and Applied Sciences

Link: https://ifory.id/abstract/6z9vHDERkr2Z

Corresponding Author
Wasu Cheewasukhanont

Institutions
a) Physics program, Faculty of Science and Technology Nakhon Pathom Rajabhat University Nakhon Pathom 73000 Thailand
*wasu.kotzen[at]gmail.com
b) Center of Excellence in Glass Technology and Materials Science (CEGM) Faculty of Science and Technology Nakhon Pathom Rajabhat University Nakhon Pathom 73000 Thailand

Abstract
The theoretical calculations on radiation shielding parameters of glass systems in the composition (80-x) B2O3: 20Na2O: xBi2O3 (where x = 0,5,10,15 and 55 mol%) were inquired into using the WinXCom program. The characteristics of radiation shielding parameters for the glass systems had been examined for the mass attenuation coefficients, the effective atomic number, and the electron density in the energy ranges of 1 keV to 100 GeV. These are the glass systems at the different compositions of bismuth which were found that depend upon the energy regions. The results demonstrate that the mass attenuation coefficients, the effective atomic number, and the electron density have the same trend which those values increase with the increasing of the different compositions of bismuth. At the low-energy region, the mass attenuation coefficients show the several discontinuous jumps of the energies which correspond to the photoelectric absorption edges. At the medium-energy region, the Compton scattering process is the main interaction in these energy ranges. In the high-energy regions, pair production becomes the main interaction process and tends to be constant over energy.

Keywords
Radiation shielding materials; Bismuth sodium borate; glasses shielding

Topic
Material Science and Engineering

Link: https://ifory.id/abstract/exPvwkRJAHrj

Corresponding Author
RIRIN DWI ASTUTI

Institutions
1) Biology Education of Postgraduate School Universitas Negeri Medan, Jalan Willem Iskandar Psr V Medan Estate, North Sumatra 20221, Indonesia.
2) Department of Biology, Faculty of Mathematics and Natural Sciences Universitas Negeri Medan, Jalan Willem Iskandar Psr V Medan Estate, North Sumatra 20221, Indonesia.
*fauziyahharahap[at]gmail.com

Abstract
This research was conducted to determine the best combination of plant growth regulators on callus induction of shoot explants mangosteen (Garcinia mangostana L.). The research used complete randomized design (CRD) factorial which is consisting of 12 treatments with 3 times repetitions. The parameters observed were time of callus formation, callus texture, callus color, callus pile height, callus surface area, callus weight, and callus performance. Data was analyzed by using ANOVA, and DMRT as follow up. The result showed that addition of plant growth regulators have effect on callus induction of shoot explant mangosteen (Garcinia mangostana L.). The best concentration and composition of media for induction of mangosteen callus is by giving sucrose 1,5 g / L + 2,4D 3 ppm because it was able to produce callus with the fastest time with a compact texture and color that is identical to green and white. The callus has 0,67a cm in height, 1,70a cm2 in width, and 0,063a g in weight. The callus performance is growing all over the surface.

Keywords
callus induction, in vitro, mangosteen, plant growth regulator.

Topic
Biochemistry, Biotechnology and Pharmacy

Link: https://ifory.id/abstract/E4LndNqzQApB

Corresponding Author
Kerista Tarigan

Institutions
1Department of Physics, FMIPA, Universitas Sumatera Utara, Jl. Bioteknologi No.1, Padang Bulan, Kec. Medan Baru, Medan, Sumatera Utara 20155, Indonesia

Abstract
Classification of seismic signal waveform is an essential component to realize the characteristics of the signal. The processing of the waveform signal is broadly used for the analysis of the real-time seismic signal. The numerous wavelet filters are developed by spectral synthesis using machine learning python to realize the signal characteristics. Our research aims to generate the performance of seismic signal and processing the waveform from Broadband Network Station by using Wavelet-Based on Machine Learning. In this case, we use Continuous Wavelet Transform (CWT) on Morlet to evaluate and classification the Phase in Tarutung earthquakes January 2019. CWT is also clearly to identify spectral amplitudes and frequency-energy from the component of signal seismic performed by Broadband Network in Indonesia. The characteristic of the digital broadband network in Sumatera Fore-Arc is variance. Our study tries to classification and evaluate the Broadband Seismic Network which deployed in Sumatera Region, Indonesia by using Power Spectral Density Probability Density Function (PSDPDF).

Keywords
Classification, Machine Learning, Morlet, Broadband Network, PSDPDF

Topic
Big Data, Database System, Data Mining and Web Mining

Link: https://ifory.id/abstract/pjWEGVJ8rkKg

Corresponding Author
Liana Dwi Sri Hastuti

Institutions
Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Jl.Bioteknologi No.1 Padang Bulan, Medan Baru 20155

Faculty of Public Health Sciences, Universitas Sumatera Utara, Jl. Universitas No. 32 Padang Bulan, Medan Baru 20155

Abstract
Trash is still a problem that the solution still continues to innovate until now. Based on information by the Ministry of Environment and Forestry (KLHK), the Republic of Indonesia has released a list of cities in Indonesia based on its cleanliness level. The Deli River is one of the garbage prone spots, and the waste will accumulate and surely will pollute the environment, all garbage is in the downstream or middle, all will be down to Bagan Deli village which eventually all the garbage will be Sources of pollution and disease for communities in Bagan Deli village. Programs with waste banks have been encouraged, but the management and facilities are still lacking, with community service is expected to understand the importance of maintaining environmental hygiene and utilizing waste as a source of and able to manage the waste bank as a new search eye, sorting based on the categories of till that are more detailed and specific so as to provide convenience during the presses, also will be made miniature garbage bank counter to Well-coordinated fitting management. The result of the Survey shows the level of customer satisfaction of the Trash bank belongs to the category quite well, and need some evaluation for the improvement of Waste Bank. The last will be created special training on how to create another pilot waste bank in other environment of Bagan Deli.

Keywords
Bagan Deli, Waste, Bank

Topic
Applied Basic Science and Multidisciplinary

Link: https://ifory.id/abstract/yEgLbHUtfeCG

Corresponding Author
Maryati Sinaga

Institutions
Department of Agrotechnology, Faculty of Agriculture, Universitas Sumatera Utara
Jl. Prof. A. Sofyan 3,Padang Bulan, Medan 20155, Indonesia

Abstract
This study aims to compare the effectiveness of two attractants and three different heights trap to trap coffee berry borer Hypothenemus hampei Ferr. (Coleoptera: Scolytidae). This research was conducted at a coffee plantation in Soban Village, Dairi Regency, North Sumatra, using a Factorial Randomized Block Design (RBD) with two factors. The first factor was the type of attractants (control, coffee bean, and coffee bean pod (exocarp)), and the second factor was the height of the traps (1, 1.5, and 2 meters). The results showed that the attractant from coffee beans with a trap height of 1.5 meters gave the best results with the number of adult coffee bean borer trap catches was 1,377.00 adults, and significantly reduced the percentage of attack by 26.95% compared to other treatments.

Keywords
attractants, coffee, coffee berry borer, Hypothenemus hampei, heights trap

Topic
Fundamental and Applied Sciences

Link: https://ifory.id/abstract/3EhBTCkPWvgr

Corresponding Author
Ayu Kurniasih

Institutions
Universitas Negeri Medan

Abstract
Abstract. The purpose of this study is to describe daily problems related to distance, speed and time, and solve the problem of distance, speed and time using a magic triangle. This research is library research so that the data collection method used is documentation, based on books and journals as written sources that contain various themes and subjects discussed. Research data were collected and analyzed by descriptive methods that describe what is being investigated. The initial step of this research is to conduct research to study the results made from references in journals, books or previous researchers. After the data is collected, data processing is carried out. Then do the data analysis with descriptive analysis. The results of this study obtained problems of daily activities related to distance, time and speed. Solving the problem of distance, speed and time can be easily solved with a magic triangle. Keywords: Problem-solving, distance, time, speed, the magic triangle

Keywords
Problem-solving, distance, time, speed, the magic triangle

Topic
Applied Mathematics and statistics

Link: https://ifory.id/abstract/NZXCKWRjrF8p

Corresponding Author
Rostime Simanullang Simanullang

Institutions
Department of Biology FMIPA Universitas Sumatera Utara, Jalan Dr. Mansyur Medan, Indonesia, 20155

Abstract
Andaliman (Zanthoxylum acanthopodium DC) is an endemic plant from Northen Sumatera Indonesia that have high antioxidant. Cervical cancer is an abnormally growing cell in the cervix and then undergoes tumor growth. The number of cervical cancer cases in Indonesia was increasing every years. The aim of this study was to determine the role of andaliman methanol extract on cervical cancer. This research used 4 groups of female rats consisting of: Control positive (Normal Rats), Control Negative (Rats were Injected Benzo(&

Keywords
152

Topic
Applied Basic Science and Multidisciplinary

Link: https://ifory.id/abstract/7CefTa9wz3Lt

Corresponding Author
Eddy Ibrahim

Institutions
a,b,c) Jurusan Teknik Pertambangan, Fakultas Teknik, Universitas Sriwijaya,
Jl. Srijaya Negara Bukit Besar, Palembang, 30139, Indonesia *eddyibrahim[at]ft.unsri.ac.id

Abstract
PT.Virginia Indonesia Company (PT. VICO) is one of the oil and gas company which production of coal bed methane. The company is located in East Kalimantan province with the basin are processes namely Kutai Basin. Calculation of methane gas in place of coal bed can be done by several methods such as : material balance, volumetric and desorption test. Each method has its advantage and disadvantages. The method that used by PT. VICO to calculate gas in place at the moment is only the method of material balance. By using that method for calculating gas in place considered less accurate. Therefore we need other method of calculation of gas in comparison and evaluation of whether the value obtained relatively the same. One method of calculation, named volumetric method. This research will analyze the determination of the methane gas in place of coal using a volumetric method at Mutiara field PT VICO, East Kalimantan. The result of this study can be used as a reference company for comparison calculation which method already exists.

Keywords
Gas in place, Coal bed Methane, Volumetric Method, Depth, Thickness

Topic
Fundamental and Applied Sciences

Link: https://ifory.id/abstract/2VengMkrAa6C

Corresponding Author
Siti Mayang Sari

Institutions
Postgraduate - Universitas Negeri Medan

Abstract
The research development of this academic portal E-learning is to improve the HOTS of PGSD students as future teachers who are superior, dignified and of character. E-learning is loved by the current Industrial Revolution 4.0 education system. The learning process using the lecture and question and answer method can be done through the academic portal, where lecturers can provide material and students can directly ask and answer in the portal. Less interesting learning system even when students choose to pretend to understand even though they do not understand at all will be overcome by the existence of the academic portal. The culture to ask questions is not very popular with students when learning forums, but with this facility it is easy to learn anytime and anywhere without any time and space limits. With the participation of lecturers in online learning, students learn automatically and can improve HOTS. Data obtained from pretest, questionnaire and posttest. The instrument form is a questionnaire and HOTS items. Subjects in this study were 35 PGSD students with STKIP Bina Bangsa Banda Aceh Learning Psychology courses, from the results of the e-learning device trial an increase occurred on the HOTS of students.

Keywords
e-learning, portal, higher order thingking skill

Topic
Multimedia and Technology Information

Link: https://ifory.id/abstract/unmXv7HkUhPr

Corresponding Author
Arini Herdayanti

Institutions
Physics Education, Postgraduate State University of Medan

Abstract
The purpose of this research is to develop dynamic fluid teaching aids for senior high school. Visualized aid tool based on dynamic fluid material. The methods used in research are the ADDIE development model (analysis, design, development, implementation and evaluation). This device was designed using the Arduino UNO sensor that can be connected to the sensor, the water flow sensor serves as a discharge meter, the LCD display screen serves the result of the calculation of the water flow sensor, the sensors water work so that water is not abundant in the container, and feeding as on/off. There is a certain height of water faucet that can make the students adjust the height that will be calculated flow discharge, the difference in the height of the stream on the venturimeter and the difference in gas pressure in the pitot tubes. The aid tool also have a worksheet for students. Based on the result of expert validation of aid tool is 86% and the validation of material experts on the students worksheet is 94% and efficiency on learning is 88%. The overall result of the expert validation test gets a good rating so the development of aid tool using the Arduino uno sensor and water flow sensor for dynamic fluid.

Keywords
Research Development, ADDIE, Learning Media, Dynamic Fluid aid,Feasible, Effective.

Topic
Applied Basic Science and Multidisciplinary

Link: https://ifory.id/abstract/m8Zr4pCM6cWk

Corresponding Author
Dwi Fany Fransiska Dewi Butar-butar

Institutions
Postgraduate

Abstract
This study aims to: (1) Produce learning models that are feasible to use, easy to learn and can be used for learning (2) to determine the effectiveness of learning models based on E-learning. This research is a type of development that uses the product development model Borg and Gall and combined with the models learning design Dick and Carey.The method used in this study is a quasi-experimental method. The research sample consisted of 36 students as an experimental and 36 students as a control class. The results of the hypothesis test study prove that there are significant differences between economic learning outcomes that are learned using the E-learning "SMILE" learning model with economic learning outcomes that are learned using inquiry learning models.

Keywords
e-learning based "smile" learning model, inquiry learning model, economic learning outcomes

Topic
Multimedia and Technology Information

Link: https://ifory.id/abstract/tY6vKznUPjFZ

Corresponding Author
Maya Maya

Institutions
Postgraduate

Abstract
This study aims to: (1) Produce inquiry-based economic learning e-Modules that are feasible to be developed to improve economic learning outcomes, and (2) to determine the effectiveness of inquiry-based economic learning e-Modules that are developed can improve economic learning outcomes. This type of research is development research that uses the R&D model of Borg and Gall combined with Dick and Careys instructional design model. The research method consists of two stages: the first stage is developing e-Module learning media and conducting a feasibility test, then the second stage is testing the effectiveness of the product.

Keywords
e-module, economic learning, inquiry-based, learning outcomes.

Topic
Multimedia and Technology Information

Link: https://ifory.id/abstract/VwMYdChp2fRU

Corresponding Author
Risky Hikmi

Institutions
Universitas Negeri Medan

Abstract
This research is a type of research development Research & Development (R&D) using the ADDIE model with quantitative and qualitative approaches applied in schools. This study aims to develop multimedia Lectora Inspire Problem Based in the field of science, knowing the feasibility of using multimedia, knowing the users response in using the media. Based on the testing of the feasibility of the media and the field of science carried out by 2 material expert validators and 1 media expert validator, it was found that the multimedia Lectora Inpire developed according to experts was declared feasible and could be used as multimedia learning in the field of science.

Keywords
Interactive Multimedia, Lectora Inspire, Research & Development, ADDIE

Topic
Multimedia and Technology Information

Link: https://ifory.id/abstract/a7DEfMKBT4N6

Corresponding Author
Uswatun Hasanah

Institutions
(a) Jurusan Fisika Pascasarjana Universitas Negeri Medan
(b) Dosen Fisika Pascasarjana Universitas Negeri Medan

Abstract
A Stirling engine is a heat engine that operates by cyclic compression and expansion of air or other gas (the working &

Keywords
stirling engine, heat , mechanical and electricity

Topic
Applied Basic Science and Multidisciplinary

Link: https://ifory.id/abstract/WmRuMc8KJQPz

Corresponding Author
FAHRUL ROZI

Institutions
Postgraduate Education Technology UNIVERSITAS NEGERI MEDAN

Abstract
This research aims to: (1) know the feasibility of the media Video tutorial based on the project based learning software application and interior building, and (2) to determine the effectiveness of the use of media video tutorial based project based learning on software application learning and building interiors can improve the learning outcomes of software applications and building interiors. This type of research is development research using R&D models from the Borg and Gall combined with the Dick and Carey instructional design models. The method used in this study is a quasi-experimental method. The results of the hypothesis test study prove that there are significant differences between the learning outcomes of software applications and building interiors that are studied using video based tutorials on project based learning with the learning outcomes of software applications and building interiors that use visual media.

Keywords
video tutorials, project based learning, media visual, learning outcomes, software applications and interior building.

Topic
Multimedia and Technology Information

Link: https://ifory.id/abstract/DEYJHWn78Ghr

Corresponding Author
DEFA Harahap

Institutions
Postgraduate School - Universitas Negeri Medan

Abstract
At this moment it is realized that the diminished knowledge of local culture is a guideline in community life. The increasingly advanced impact of science and technology makes cultural values less. There needs to be a relationship of science and technology that does not leave cultural values in the students so that life is aligned so that technological advancement is coupled with the cultural values inherent in the students. The presence of technology is not a barrier for students to create and innovate. Rather, students can train students to convey positive new ideas and not contradict the culture of the community. One of the patterns of kinship adopted from the value of Batak culture contains many positive and good elements that can be used as a role model in the use of technology. Making the use of technology is growing by having a cultural corridor that can align in its development and use in both the digital world though. In this study gave birth to a visual learning media that collaborated with the values of Batak culture. The research is using the 4 D Thiaganrajan development model consisting of Define, Design, Development and Dissemination. The validation results of three experts consisting of material experts, design experts and media experts with a very decent category. Once validated by the three experts, the media tested on two groups of small groups and large groups by demonstrating the effectiveness of the media.

Keywords
Visual learning Media, Indonesian language, Batak culture "Dalihan Na Tolu"

Topic
Multimedia and Technology Information

Link: https://ifory.id/abstract/4BMxD7g8zuZy