bluuebunny/crossref_metadata_2025_split huggingface dataset:
Identification of lithology and fluid content using simultaneous inversion in the “IM” field of the North Sumatra Basin
Authors: Al Ayubi Ilham Muhammad , Riyanto Agus , Wahdanadi Haidar M. 
Published: March 2021

Abstract
The “IM” field is an oil and gas exploration field located in the North Sumatra Basin. It was previously identified that in this field hydrocarbons were found in the form of gas condensate. This study aims to characterize the reservoir in terms of lithological distribution and fluid content. The research includes carbonate reservoir targets located in Middle Miocene Malacca Limestone. The data used in this study are 3D seismic data and two wells data. The simultaneous inversion method is applied to process data so that research objectives can be achieved. The simultaneous inversion method produces Acoustic Impedance (Zp), Shear Impedance (Zs). The results show that in the gas reservoir the acoustic impedance (Zp) value is around 16542 - 18917 (ft/s*g/cc) and the shear impedance(Zs) is around 8375 (ft/s*g/cc) while in the water reservoir the acoustic impedance (Zp) value is around 21292 - 23667 (ft/s*g/cc) and the shear impedance (Zs) is around 18500-20525 (ft/s*g/cc). The results showed that the reservoir distribution has a North West-South East orientation.
Physics teachers’ perceptions and anxieties about the use of technology-integrated learning resources on magnetic field material: A preliminary research on augmented reality-integrated STEM learning
Authors: Widyanti R , Abdurrahman  , Herlina K , Zahara M , Agustina L 
Published: March 2021

AbstractThe educational world development faces the challenges of the 21st-century where technology plays an important role in learning so that technology-integrated teaching material is needed. The subjects of this study were 48 physics subject teachers in several schools in Lampung province. The research method used was a mixed method. The data was collected using questionnaires and interviews. The results of the study revealed that the teachers have never made learning resources assisted by the integration between STEM and augmented reality technology. The teachers also revealed that they were anxious that the learning resources that they will use cannot fully meet the competency standards if they are not equipped with learning technology that supports the abstract concepts learning. Thus, the teachers expected technology-assisted learning resources in which texts, images, 3D animations, and videos can be integrated. For further researchers, it is necessary to develop STEM learning resources assisted by augmented reality technology.
Teachers’ perceptions of 3D technology-integrated student worksheet on magnetic field material: A preliminary research on augmented reality in STEM learning
Authors: Zahara M , Abdurrahman A , Herlina K , Widyanti R , Agustiana L 
Published: March 2021

AbstractThe change in civilization aimed at the industrial revolution 4.0 and the era of society 5.0 is a discourse in the world of education. Learning activities are a major part of education at schools, thus, they require learning devices and teaching materials updates. The development of learning resources, such as electronic student worksheets, can be used as a solution to obtain 21st-century skills. This study was aimed to analyze teacher and students’ perceptions about augmented reality-assisted worksheets with STEM approach in physics learning. The research was conducted at high schools in Lampung Province involving 139 twelfth-grade students and 16 physics teachers. The method used was the mixed-method. The research instruments used were questionnaires and telephone interviews. The results showed that teachers have not fully used augmented reality-based teaching materials STEM approach. The types of teaching materials needed by students and teachers are interactive teaching materials integrated with STEM. STEM allows students to deepen their abilities in the fields of science, technology, engineering, and mathematics, so it is necessary to develop augmented reality-assisted worksheets with STEM approach to face the challenges of the industrial revolution 4.0 and meet the competency standards in the 21st-century, namely the critical-thinking ability on magnetic field material.
The influence of control parameter on the morphology polyethersulfone/polyacrylonitrile (PES/PAN) fiber using electrospinning technique
Authors: Danny Pratama Lamura M. , Pulungan Meuretta A , Jauhari Jaidan , Sriyanti Ida 
Published: March 2021

Abstract
Electrospinning is one of a method for fabricating nanometer to micrometre fibres. Some parameters that affect the formation of nanofibers in an electrospinning method such as solution, process, and environmental parameters. This research aims to synthesize and characterize polyethersulfone/polyacrylonitrile (PES/PAN) nanofibers and to analyze the effect of electrospinning parameters on PES/PAN nanofibers. PES/PAN fibres were prepared by dissolving PES with a concentration of 10% (w/w), 15% (w/w), 20% (w/w), and then added 0,5 gram of PAN. The results of fibre morphology with a variety of solutions showed the PPG1 fibre bead and the fibres for PPG2 and the fibre for PPG3, the morphological results of the PPG2 samples with variations in the tip collector distance indicated the fibre. The results of the diameter analysis showed that the effect of solution variation showed fibre for PPG1, PPG2, PPG3, namely 481 nm, 776 nm, 1339 nm, respectively while the diameter variation of the tip collector distance is 5 cm, 10 cm, 15 cm, namely 1266 nm, 860 nm, 401 nm, respectively and the voltage variation at 10 kV, 12 kV, 14 kV, namely 698 nm, 681 nm, 680 nm, respectively. The results of morphology and diameter show that the solution parameters and the electrospinning process affect the shape and diameter of the fibre. Fabricated fibres can be used as matrices in air filtration systems.
Understanding complexity paradigm and sustainability of complex systems: The role of theoretical physics
Authors: Alatas Husin 
Published: March 2021

Abstract
This brief review discusses the complexity paradigm and the sustainability of complex biological, ecological, and socio-economic systems. This paradigm is considered to complement the reductionism paradigm in explaining the natural phenomena. We suggest that the concepts used in theoretical physics can be considered to describe the specific case of complex systems and to develop their dynamical models.
Science and environment for education: Measuring HOTSEP of electricity energy topic using Ichsan and Rahmayanti taxonomy
Authors: Hidayati Sri , Irwandani  , Yusandika Ajo Dian , Anwar Chairul , Rahmayanti Henita , Ichsan Ilmi Zajuli , Mehadi Rahman Md. 
Published: March 2021

Abstract
Learning science in the 21st century focuses a lot on caring for the environment. This study aimed to measure students’ HOTSEP (Higher Order Thinking Skills of Environmental Problem) in the context of environmental problems related to electricity. The descriptive method was used with a sample size of 50 students from several cities in Indonesia. The HOTSEP instrument consists of 3 categories of thinking levels ranging from criticizing environmental problems (C4), solving environmental problems (C5), and developing innovations about the environment (C6). The results showed that the HOTSEP of students was included in the “medium” category (50,41). These results indicate that the level of understanding of electrical concepts and their implementation at the student level in general still needs to be improved. Suggestions for further research, understanding environmental concepts of electricity needs to be introduced to students in general so that they can apply it in their daily lives for the better.
An analysis of students’ physics misconceptions in online learning using the four-tier diagnostic test with certainty of response index (CRI)
Authors: Surmaini  , Syafe’i Imam , Diani Rahma 
Published: March 2021

Abstract
This study was aimed to determine the level of students’ physics misconceptions in online learning using a four-tier diagnostic test with Certainty of Response Index (CRI). The Certainty of Response Index (CRI) is a method used to measure students’ misconceptions about the material taught by teachers. This research was conducted on 27 students of class X TJTL of SMK BLK Bandar Lampung City. The students worked on a four-tier diagnostic test on fluid material which consisted of 20 items. Based on the results of the research, 11 students knew the concept with an average score of 40.74% in the moderate category, 8 students who did not know the concept with an average score of 29.62% in the low category, and 8 students with misconceptions with an average score of 29.62% in the low category.
The scientific argumentation profile of annular solar eclipse phenomenon June 21st 2020 of physics undergraduate student in Universitas Negeri Surabaya
Authors: Deta Utama Alan , Yanti Vivin Khoiri , Misbah  , Mahtahari Saiyidah , Alamsyah  
Published: March 2021

Abstract
Arguments play an important role in determining how strong an understanding of science is. Training and increasing the level of student argumentation can be done in various ways, including by teaching students to argue about natural phenomena around such as the phenomenon of an annular solar eclipse. On Sunday, June 21, 2020, there will be an annular solar eclipse that will pass across parts of Indonesia. In responding to this phenomenon, the perception of the people or citizens of Indonesia is very diverse. Therefore, further research is needed. This research aims to describe and analyze the comprehension and scientific argumentation profile of Annular Solar Eclipse Phenomenon June 21st 2020 of Physics Undergraduate Student in Universitas Negeri Surabaya. This research was conducted with a descriptive qualitative research method and the data analyzed by using an observer rubric adapted of Toulmin’s argumentation pattern. Seventy respondents Physics Undergraduate Student, class of 2017, from Universitas Negeri Surabaya were involved in this study using a questionnaire and interview. The result showed that physics students had a fairly good knowledge and understanding related to the phenomenon of the annular solar eclipse, meanwhile, the subject’s ability in providing scientific argument is at the level of providing claims and evidence, but weak warrant. Subjects will not be able to explain their scientific arguments if they are not supported by the knowledge they have. Therefore, it can be recommended that physics students can improve their understanding of the concept of an annular solar eclipse through a process of argumentation.
Fotiem test to analyze scientific communication skills in linear motion
Authors: Fariyani Qisthi , Kusuma Hamdan Hadi 
Published: March 2021

Abstract
Scientific communication is an important skill for teacher, but so far, lecturers have never evaluate the scientific communication skills of pre-service physics teacher. This study aims to analyze the scientific communication skills of pre-service physics teacher of UIN Walisongo Semarang. The data collection methods used were tests, questionnaires, and documentation. The results of the data analysis showed that the test questions were valid and reliable. There are 27 items in the final product, with one easy question and 26 moderate questions. Pre-service physics teachers’ scientific communication skills are divided into six categories, with a percentage of 23.6% being skilled; 1.2% less skilled type 1A; 2,6% less skilled type 1B; 6.7% less skilled type 2A; 47.9% less skilled type 2B; and 17.9% unskilled. The lecturers need to improve scientific communication skills to pre-service physics teacher. In addition, lecturers also need to analyze pre-service physics teachers’ scientific communication skills other materials.
Effect of concentration double layer ZnO/ZnO:Ag on optical and photocatalytic properties
Authors: Anggita Sheilla Rully , Ghozali Achmad , Kusuma Hamdan Hadi 
Published: March 2021

Abstract
ZnO is a semiconductor material that advantages in various applications, especially for photocatalysts. The catalytic activity of ZnO is much better than other materials, because ZnO can absorb light in a wider spectrum. The double layer ZnO/ZnO:Ag with various concentrations of 0.1 M, 0.3 M, and 0.5 M has been successful deposition. Double layer ZnO/ZnO:Ag deposition was carried out by sol-gel method and spray coating deposition technique. The results showed that the concentration of double layer ZnO/ZnO: Ag increased with the increase of the absorbance value. From the transmittance spectrum attempt was made to estimate the value of energy band gap of the samples. Double layer ZnO / ZnO:Ag energy gap in the range 3,2-3,3 eV. The energy gap of Double Layer ZnO/ZnO:Ag decreases with increasing concentration to 0.5 M. Double layer ZnO/ZnO: Ag 0.5 M has the smallest energy gap of 3.21 eV. Photodegradation testing was carried out to determine the ability of samples to photocatalytic activity at methylene blue dye. The optimum photocatalytic activity is indicated by the largest percentage of degradation. The largest percentage of degradation was shown by Double layer ZnO/ZnO:Ag 0.3 M at 81.5%.
Synthesis and characterization of bioplastic based on chitosan-urea-bentonite
Authors: Azizati Zidni , Haqiqi Arghob Khofya 
Published: March 2021

Abstract
Consumption of synthetic plastic made the level of plastic waste in the world become massive problem in environment. Biopolymer is an alternative which produced from renewable material with an abundant amount in the world. This study aimed to produce bioplastic materials based on chitosan and bentonite, with addition of urea. The method in this research consisted of bentonite preparation, synthesis bioplastics and characterization. Characterization in this research include FTIR, XRD, mechanical strength, and biodegradation. The result in this research showed that the addition of bentonite increased tensile strength of bioplastic. The more bentonite added in the bioplastic system, the higher tensile strength value. The addition of 0,1; 0,5; and 1 g bentonite made the tensile strength of bioplastic increased become 4.17; 4,28; and 4.90 MPa. Whereas the addition of 2 g bentonite decreased the tensile strength of bioplastic become 2.69 MPa, as the structure which formed in bioplastic was exfoliation which was strengthen from XRD pattern. Biodegradation test showed that bioplastic contained of 2 g bentonite has the fastest time to perfectly lose in the soil which only 12 days.
Development of chemistry e-module flip pages based on chemistry triplet representation and unity of sciences for online learning
Authors: Fibonacci Anita , Wahid Abdul , Lathifa Ulya , Zammi Muhammad , Wibowo Teguh , Kusuma Hamdan Hadi 
Published: March 2021

Abstract
The digital module can be used as a solution in online learning during the Covid-19 pandemic. The purpose of this study was to develop and evaluate a Chemistry e-Module Based On Chemistry Triplet Representation and Unity of Sciences. Research and development were conduct to developed this e-module. The steps were: (1) research and information collected; (2) planned; (3) developed a primary form of product; (4) preliminary field-tested; (5) main product revision; (6) main field-tested; (7) operational product revision; (8) operational field-tested; (9) final product revision; (10) dissemination and implementation. Pre-test post-test control group design was applied to see the effectiveness of e-Module on critical thinking skills. Data were collected using test and non-test methods. The research subjects were students of the Chemistry Education Department, UIN Walisongo. Chemists and multi media experts have done the validation to test the initial quality of the products and give a feedback for the product improvement. The results of the validation test from experts reviews obtained a mean score of 3.85 from a maximum score of 4, which indicated that the e-Module was in the Eligible category. The media expert’s assessment got a mean score of 4.0 from a maximum score of 5 which means that the e-module was in the Appropriate category in media aspects. The e-Module got a mean score of 3.64 from the highest score of 4, which means that the e-module developed was in the very feasible category according to students. T-test results showed that there were differences in N-gain score between control and experimental group. It has been proved to be significantly different (sign test from SPSS showed < 0,05), with the mean score of the experimental class being higher than the control class. The Control group achieved an N-gain score of 0.53 (moderate category) otherwise experimental group achieved 0.80 (high category) which was higher than the control group.
The ethnobotany of Zingibraceae as the traditional medicine ingredients utilized by Colo Muria mountain villagers, Central Java
Authors: Wahidah Baiq Farhatul , Hayati Nur , Khusna Umi Nihayatul , Ducha Rahmani Tara Puri , Khasanah Rizkiati , Kamal Irsyad , Husain Fadly , Setiawan Andri Imam 
Published: March 2021

Abstract
Zingiberaceae is one of the natural resources used as a natural medicine by Colo Muria mountain villagers in Dawe District, Kudus Regency, Central Java. However, there is no particular study focusing on the use of the Zingiberaceae family in that area. This research aims to identify some species of the Zingiberaceae family utilized as a traditional medicine Colo Muria mountain villagers in Central Java. The data collection method is conducted by a semi-structured interview method, field observation, and documentation. The data was analyzed qualitatively. The result shows that there were 14 species utilized as traditional medicine by the Colo Gunung Muria villagers: Bangle (Zingiber purpureum Roxb), Ginger (Zingiber officinale), Red Ginger (Alpinia purpurata k. Schum.), Cardamom (Elettaria cardamomum (l.) Maton), Kencur (Kaempferia galanga L.), Kunci (Kaempferia pandurata Roxb.), Turmeric (Curcuma domestica Val.), Bitter Ginger (Zingiber zerumbet), Lengkuas (Alpinia galanga (L.) Swartz), Parahulu (Amomum aculeatum Roxb.), Temu Lawak (Curcuma xanthorhiza Roxb.), Temu Giring (Curcuma heyneana Val.), Temu Hitam (Curcuma aeruginosa Roxb.), and Temu Putih (Curcuma zedoaria Berg.). The processing technique of the plants was in two ways: pounded and boiled. While the methods of use were by drinking (61%), rubbed (22%), direct consumption (9%), dripped (4%), and dicethik (squeezed and dripped 4%).
Analysis of UoS contextual chemical literacy ability of chemistry pre-service teacher on reaction rate topic
Authors: Nada E I , Sari W K 
Published: March 2021

Abstract
The chemical literacy ability is an essential ability that should be possessed by a pre-service teacher. This research aims to acknowledge the achievement of knowledge, context, competence, and attitude. This research was descriptive-qualitative research whose population consisted of the students of chemistry education. The subjects were 25 students who took a general chemistry class. The techniques of data collection were the interview and questionnaire. The research instrument was the assessment instrument based on chemical literacy and UoS. Based on the research conducted, it was known that the chemical literacy ability of pre-service teachers on the reaction rate topic, the aspect of knowledge found was 71,87%, the aspect of context was 70,25%, the aspect of competence was 73,67%, and the aspect of attitude was 71,53%. The results showed that chemistry pre-service teachers’ chemical literacy ability on the reaction rate was medium, with 71,83%.
Profile of students’ creative thinking in solving mathematics problems in terms of gender
Authors: Cahyono B , Rohman A Aunur , Fauzi M. 
Published: March 2021

Abstract
This study aims to describe the creative thinking process of students in solving math problems in terms of differences in gender. This study qualitatively examines the creative thinking process of sixth semester students of mathematics education at the Faculty of Science and Technology, UIN Walisongo. The data collection techniques used in this study were questionnaires, tests, interviews and completed with documentation. The data analysis techniques in this research are data reduction. The data analysis technique in this research is data reduction and data validity by using time triangulation, namely by looking for the suitability of interview data which originates from the problem of two similar questions. The results showed that gender differences did not significantly affect students’ creative thinking abilities. Male subjects need stimulation of questions from researchers to compile information correctly and precisely. Male and female subjects monitored the problem-solving process well, but both had not yet carried out an evaluation process.
Students’ mathematical communication skills through vlog in project-based learning based on the unity of sciences
Authors: Fitriani Ulliya , Rohman Ahmad Aunur 
Published: March 2021

Abstract
This study aims to determine the increase in mathematical communication skills of students of UIN Walisongo Semarang using mathematics teaching materials that apply Project Based Learning through vlogs based on unity of sciences. The importance of mathematical communication skills can help students more easily communicate the results of their mind on mathematical problems through symbols, diagrams, tables, or the other media. Mathematical communication skills make it easier for students as prospective teachers to convey messages in the form of mathematical concepts, principles, and objects. Students who have mathematical communication skills have an easy understanding of the level of understanding the concepts and application of mathematics in everyday life. Mathematical communication skills can be honed through a learning process that involves groups in creating and completing a project. Giving projects in the form of vlogs trains students in communicating and expressing their ideas or truths and can inspire others to do the same on the vlogs that have been made. Project-based learning through vlogs with Islamic values as the implementation of the unity of knowledge can instill a paradigm that all knowledge is one interconnected unit, sourced from the verses of Allah, both qauliyah and kauniyah verses, so that it is getting higher. Owned mathematical knowledge, makes someone who studies mathematics more faith in Allah. The results showed that there was an increase in the mathematical communication skills of mathematics education students by using a project-based learning model through vlogs based on science unity.
Mathematical critical thinking ability: the effect of scale difference on integral
Authors: Romadiastri Y , Saleh M , Saminanto  
Published: March 2021

Abstract
The aim of this research was to examine the effects on students’ critical thinking skills on integral subject when the lecturer presented problems using different scales on the X and Y axis. This type of research is a qualitative descriptive research. The research subjects were 76 mathematics education students who attended Calculus 2 class. In this study, the 76 students were given four questions to solve and then their critical thinking ability scores were sought. Based on this score, 6 people were selected to be interviewed to find out more deeper about how students’ critical thinking skills in various categories. Data were collected through documentation of student’s work, observation, and interviews. The results showed an effect on students, that is, they met almost all indicators of critical thinking skills. In addition, students become more careful and thorough in solving the problems given. The critical thinking skills arises because the problems presented to students are related to several concepts in the previous materials.