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Edumatsains
Published by Universitas Kristen Indonesia
ISSN : 25277642     EISSN : 25277235     DOI : -
Core Subject : Science, Education, Agriculture,
Agriculture, Biological Sciences & Forestry Chemistry Education Mathematics Physics
Jurnal EduMatSains merupakan wadah untuk menampung dan mempublikasikan hasil karya baik berupa hasil penelitian maupun kajian teori yang original dalam ruang lingkup pendidikan matematika dan pendidikan sains (fisika, kimia, biologi) serta ilmu matematika dan ilmu sains (fisika, kimia, biologi) bagi semua civitas academika khususnya dosen, guru, peneliti dan mahasiswa. Jurnal EduMatSains terbit sebanyak dua kali dalam satu tahun (Juli dan Januari). Jurnal EduMatSains diterbitkan Oleh Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia.
Arjuna Subject : -
Articles 359 Documents
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Botani, Manfaat, dan Bioaktivitas Nilam Pogostemon cablin Marina Silalahi
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 4 No 1 (2019): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v4i1.1042

Abstract

Pogostemon cablin (PC) is a belonging of Lamiaceae which produces a distinctive aroma known as patchouli oil which is used in the production of perfumes and as aroma therapy. The aroma produced by plants is related to the content of volatile secondary metabolites. The writing of this article is based on literature studies in the form of books, journals and other research results and then synthesized to obtain comprehensive information about botany and the use of PCs. In Indonesia, there are three types of Pogostemon, namely PC (Aceh patchouli), P. heyneatus (Javanese patchouli) and P. hortensis (patchouli soap), but what produces more patchouli oil is a PC. Patchouli oil is a essential oil from PC leaves which is used in the pharmaceutical industry and has a very high economic value. In traditional medicine PC used to cure fever, nausea, colds, headaches, fever, nausea, vomiting, diarrhea, stomach ache, insect bites and snakes. The alcohol patchouli, α-patchoulene, β-patchoulene, α-bulnesene, seychellene, norpatchoulenol, pogostone, eugenol and pogostol are the main essential oils of PCs. Bioactivity of the PC is anti-stress, anti-influenza, aroma therapy, antioxidant and anti-microbial. The use of PC as aroma therapy needs to be studied further so that it can be developed in commercial scale to sauna. Keywords: Pogostemon cablin, patchuoli oil, aroma therapy
Meningkatkan Kreatifitas Siswa melalui STEM dalam Pembelajaran IPA Increasing Student Creativity through STEM in Science Learning Rikardus Herak; Godelfridus Hadung Lamanepa
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 4 No 1 (2019): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v4i1.1047

Abstract

This study aims to improve students' creativity through STEM in Science Learning in Class VIII SMP Negeri 11Kupang. The STEM approach is associated with the environment, so that a learning is realized that presents the real world experienced by students in everyday life. This means that through the STEM approach students are not just memorizing concepts, but rather how students understand and understand scientific concepts and their relationships in everyday life. The problem in this study is the low creativity of students in science learning. The subjects of this study were class VIII J students totaling 25 people. This type of research is classroom action research (CAR). This research model is in the form of a cycle consisting of four stages, namely: planning, action, observation and reflection. Data collection techniques in the form of observation sheets and questionnaires. The analysis technique uses descriptive analysis. The results of the study show that science learning with the STEM approach can train students 'creative abilities in linking the four fields of the exact science so that they have deep insights and can enhance students' creativity Keywords: Creativity, STEM, Learning outcomes
Green-Synthesis Nanopartikel SnO2 Termediasi Ekstrak Daun Pelawan (Tristaniopsis merguensis Griff.) Mustari Mustari; Evi J; Aliefia Noor; Rifqi Almusawi Rafsanjani; Yuant Tiandho
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 4 No 1 (2019): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v4i1.1043

Abstract

SnO2 nanoparticles are materials that have great potential in gas sensor devices. In this article, the synthesis of SnO2 nanoparticles is carried out through the mediation of pelawan (Tristaniopsis merguensis Griff.) leaf extract. The use of mediators of natural materials in this synthesis aims to make the synthesis process more environmentally friendly and lower in cost compared to conventional chemical and physical methods. Pelawan extract contains high antioxidant compounds. Thus, it can inhibit the agglomeration of SnO2 particles. Based on the variation of pH synthesis, it is known that the highest purity of SnO2 phase occurs at pH 7 while for alkaline conditions, there is an impurity, i.e., Sn6O4(OH)4. Calcination temperature has a very significant effect on the growth of SnO2 nanoparticle crystals. High temperatures will increase the size of the crystallite and the crystallinity. Keywords: green-synthesis, pelawan, tin oxide
Analisa Docking Cyanidin 3,5-di-(6- malonylglucoside) terhadap Reseptor Plasmodium falciparum Enoyl Acyl Carrier Protein Reductase (PfENR) sebagai Anti Malaria Nya Daniaty Malau; St Fatimah Azzahra
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 4 No 1 (2019): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v4i1.1048

Abstract

Various efforts were made to develop a more effective discovery of malaria drugs. One of them is by utilizing computer technology. The use of computers in the discovery of new drugs aims to improve the efficiency of simulation and calculation processes in designing drugs (drug design). The purpose of this study was to analyze Cyanidin 3,5-di- (6- malonylglucoside) compounds against the Plasmodium falciparum Enoyl Acyl Carrier Protein Reductase (PfENR) receptor as Anti Malaria. The research stages are first, the search for ligand and receptor compounds. Second, the preparation stage of ligand compounds and receptors. Third, the docking simulation stage uses vina autodock. Finally, the analysis stage of the docking results. The results of the study is Cyanidin 3,5-di- (6 malonylglucoside) ligand compounds that have good stability against the Plasmodium falciparum Enoyl Acyl Carrier Protein Reductase enzyme (PfENR. This can be seen from the low bond energy, which is -10.7 kcal / mol. Cyanidin 3,5-di- (6 malonylglucoside) ligand has a good bond between ligand and receptor to the stability of the Plasmodium falciparum Enoyl Acyl Carrier Protein Reductase enzyme (PfENR because there are 6 hydrogen bonds. 5 bonds between hydrogen and receptor and one bond between hydrogen and ligand The interaction between ligands and receptors that are also formed is stable seen in the hydrophobic interactions and electrostatic interactions formed.The residues that form hydrophobic interactions are ALA217, ALA319, LEU315, MET261, TYR277 and TYR111 residues, while the electrostatic bonds are residues ASP107, SER317, SER215, GLY106 and LYS285 From this interaction it can be seen that the Cyanidin 3.5 ligand -di- (6 malonylglucoside) is stable to be used as an inhibitor of the Plasmodium falciparum Enoyl Acyl Carrier Protein Reductase (PfENR) enzyme. From some parameter analysis above, it can be concluded that Cyanidin 3,5-di- (6 malonylglucoside) ligand compound has good stability as an antimalarial drug candidate. Keywords: docking, drug design, ligan, reseptor
Kembang Telang (Clitoria ternatea L.): Pemanfaatan dan Bioaktivitas Endang Christine Purba
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 4 No 2 (2020): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v4i2.1377

Abstract

Clitoria ternatea L. is one of the medicinal plants that has been widely known its use by Indonesians. Clitoria ternatea belongs to Fabaceae family. This plant is known as Kembang Telang. Commonly used for ornaments, the roots, leaves, seeds and flowers of Clitoria ternatea are used for food purposes and traditional medicine. Kembang Telang has several pharmacological potentials, which are anti-microbial, antioxidant, anti-depressant, anthelmintic, anti-cancer and anti-diabetic. The writing of this article collects information on the use of ethnobotanical Clitoria ternatea plants and the results of their test content. It is hoped that this information would become information to determine the other potential of Clitoria ternatea as a source of both traditional and modern medicines. Keywords : anti-cancer, anti-diabetic, anthocyanins, flavonoids
Karakterisasi Alginat Sebagai Bahan Setara Dengan Jaringan Lunak Untuk Radioterapi Taat Guswantoro; Astri Suppa Supratman; Imelda Sakti Asih
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 4 No 2 (2020): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v4i2.1378

Abstract

At the time of radiotherapy treatment in addition to cancerous tissue, normal tissue around the cancer will also be exposed to radiation doses, inappropriate radiation doses will cause normal tissue to potentially become new cancers called Organ at Risk (OARs). To minimize OARs by using a device made of soft tissue equivalent material that is placed over the surface of the skin called a bolus. The function of this material ensures an increase in surface dosage, this material is also flexible, easy to form, resistant to temperature changes. One of the materials that is easily formed, not easily deformed, flexible and durable is Alginate, because it is a natural hydrogel extracted from brown seaweed. Alginate that will be used in this research is alginate which is often used by dentists to print dentures. Alginate powder is formed by dough with distilled water, then printed in a mold measuring 11 x 11 cm with a thickness of 5, 7 and 9 mm. The characterization of this alginate gel includes electron density and an increase in surface dose percentage. Electron density is obtained by using CT-Scan to find out CT-Number which is then entered into the equation to obtain electron density, electron density from Alginate is obtained by 0.949 so Alginate can be said to be equivalent to breast tissue and fat tissue. Increasing the percentage of surface dose obtained by using the Linac device, obtained at 10 MeV energy Alginate thickness of 5 mm can increase by 0.50%, thickness of 7 mm can increase 9.97% and 9 mm can increase by 19.64%. At 12 MeV energy, 5 mm Alginate is able to increase 0.36%, 7 mm thickness increases by 6.46% and 9 mm thickness is able to increase by 15.03%. With this result Alginate is a soft tissue equivalent material and is able to increase the percentage of surface doses, so that alginate can be applied as a bolus for radiotherapy. Keywords : Alginate, Electron Density, Percentage of Surface Doses.
Analisis Pola Curah Hujan Terhadap Produktifitas Tanaman Padi Sawah di Provinsi Jawa Barat Faradiba
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 4 No 2 (2020): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v4i2.1379

Abstract

Increasing agricultural productivity can be influenced by various factors, one of which is rainfall. Changes in rainfall that are quite volatile cause agricultural productivity, especially for wetland paddy, is difficult to predict. The importance of predictions is made in order to prevent the decline in productivity of paddy that have an impact on the welfare of the people in Indonesia. This study aims to look at changes in rainfall patterns associated with the productivity of wetland paddy. The data used in this study is in the form of rainfall and wetland paddy production in 2002-2015. The method u`sed in this research is descriptive analysis related to pattern analysis and determination of data patterns using spectral analysis which can be seen from the results of peroidigrams. The results of this study are the pattern of rainfall that is repeated based on the periodogram analysis. Rainfall patterns in West Java Province occur every 33 months or 3 years. Increased productivity of wetland paddy occurred in 2006, 2009,2012, 2015 in accordance with the pattern of rainfall that occurs every 3 years. The characteristics of rainfall types in West Java Province in 2002-2015 are in the range of slightly wet to very wet. Keywords : rainfall, wetland paddy,spectral analysis.
Analisis Miskonsepsi Pada Soal Cerita Teori Peluang Di Program Studi Pendidikan Matematika Jitu Halomoan Lumbantoruan; Hendrikus Male
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 4 No 2 (2020): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v4i2.1380

Abstract

In this study the background to the problem is the low student learning outcomes in the Theory of Opportunities course. Opportunity theory is a course where students must master terminology, concepts, principles, algorithms and languages ??or the essence of a story problem. To be able to solve mathematical story problems, it is obligatory to master the five components. The purpose of this study is to determine where misconceptions are often experienced by students in understanding the essence and problem solving of probability theory stories, as well as any factors that hinder the learning process of opportunity theory courses outside the five components. The research subjects taken were mathematics education students in the odd semester of the 2018/2019 school year. Data collection techniques and methods used are the method of observation, interviews, documentation, and tests. The results of this study indicate that there are 41% do not master the terminology, the concept of 44.7%, prinsisp 47.8%. Algorithm 51%, and language / conclusion drawing 52%. There were 12 questions that were tested and the average student who could answer haya was around 51% and those who were still experiencing misconceptions were 49%. Algorithm and conclusion drawing are one where many students experience misconceptions in solving the problem story theory questions. Keywords : Misconception of probability theory, Misconception Analysis
Pengaruh Kandungan Oksigen Udara Sekolah Terhadap Konsentrasi Belajar Siswa Leony Sanga Lamsari Purba; Nelius Harefa
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 4 No 2 (2020): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v4i2.1381

Abstract

Oxygen content in the surrounding air affects the oxygen intake of the human brain. In learning, the adequacy of brain oxygen affects students' readiness to begin learning, which can be observed through the concentration of student learning. Through this research, information on the effect of school air oxygen content on student concentration will be obtained. The study population was East Jakarta State High School, with a sample of SMA Negeri 9 Jakarta, SMA Negeri 91 Jakarta, SMA 61 Jakarta, SMA 71 Jakarta, SMA Negeri 14 Jakarta. The sampling technique is Purpose Sampling. To obtain information about the oxygen content of school air, measurements were carried out using a Disolved Oxsigen Meter (DO Meter) with an average result of 25.98 school air oxygen levels. validated. Data analysis was performed using exlel. The average concentration of student learning is 1.85 from a scale of 4. The results of hypothesis testing using SPSS 24 obtained tcount of 83.754> ttable of 2.776, with a significance level <0.05 ie 0.00. Furthermore, the results of the linear regression correlation test obtained r = 0.948, air oxygen levels around the school with the concentration of student learning at a sig level of 0.14 (sig 0.05). Both of the results of this analysis indicate that this shows that there is an influence of the oxygen content of the school air on the concentration of student learning with a positive correlation. Keywords : Air, Oxygen, Brain, Concentration, Learning
Meningkatkan Kemampuan Bernalar Siswa SD pada Pembelajaran IPA dengan Pendekatan Pembelajaran Saintifik dan Kegiatan Storytelling Septina Severina Lumbantobing; St Fatimah Azzahra
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 4 No 2 (2020): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v4i2.1387

Abstract

The purpose of this study is to get a picture of the increase in reasoning ability of students who get science learning with a scientific approach combined with storytelling activities. This research was conducted at Elementary School 07 Jakarta semester 2019/2020. This type of research is a quasi experiment with the research design used one group pretest posttest group design. The sample in this study amounted to 50 students. The instrument used was a test of reasoning ability for subject matter always saving energy in the form of an essay test of 15 questions. The aspects of reasoning ability studied consisted of aspects of identifying, explaining and analyzing. The results showed the students' reasoning ability increased by 0.57 in the medium category. For the 3 aspects of reasoning ability studied, there was an increase in the identifying aspect by 46%, the explaining aspect by 94% and the analysis aspect by 88%. Keywords : reasoning ability, scientific approach, storytelling

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