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Jurnal Penelitian Pendidikan IPA (JPPIPA)
Published by Universitas Mataram
ISSN : 24602582     EISSN : 2407795X     DOI : -
Core Subject : Science, Education, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics
Science Educational Research Journal is international open access, published by Science Master Program of Science Education Graduate Program University of Mataram, contains scientific articles both in the form of research results and literature review that includes science, technology and teaching in the field of science. The Science Educational Research Journal is published twice in a year in January and July editions. The editors receive writing in Indonesian or English, either from the university or from outside the university.
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Articles 99 Documents
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Search results for , issue "Vol 9 No 4 (2023): April" : 99 Documents clear
Development of Inquiry-Based Student Worksheets on Chemical Bonding Material Nur istiqomah; Das Salirawati
Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i4.3118

Abstract

This research is a type of development research that uses the Four-D development model to produce inquiry-based worksheets on chemical bonding material. This study aims to produce inquiry-based worksheets that are suitable for use in the chemistry learning process. Media quality assessment is based on due diligence by material experts and media experts. The practicality test assessment was carried out by three reviewers and two Peer reviewers, and the readability test was carried out by students. The results of the study were declared feasible with several inputs and suggestions provided by media experts and material experts. The results of the practicality test of inquiry-based worksheets by reviewers and peer reviewers showed a very good category with a total average score of 77.7 and 73.0, respectively. The results of the product readability test by students for all aspects, namely learning, visual display, and software engineering, obtained an average total score of 33.03 out of 9 indicators which were categorized as very good.
Modelling of Solar Power Generation Systems as a Source of Agricultural Irrigation Pumps I Ketut Parti; Ni Wayan Rasmini; I Nyoman Mudiana; I Made Purbhawa
Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i4.3126

Abstract

New and renewable energy (EBT) is a green energy generator because its supply is abundant and will not run out all the time. Renewable energy is clean energy and does not produce pollution because it is not from fossil fuels such as natural gas, and it will not damage the environment on earth. One of the green energy generators is the Solar Power Plant (PLTS), one of the green energies developed by the Indonesian government to replace energy derived from fossil fuels. The government has set a National Energy Policy, targeting the contribution of NRE to the national energy mix by 2025 is 17% (Perpres No. 5/2006), amended by PP No.79/2014, 23% (2025, (31) % (2050) To be able to support this, it is hoped that a study and research will be carried out, "Modeling of solar power generation systems as a source of agricultural irrigation pumps” with research that can obtain results that can be obtained irrigating rice fields in Subak Kanca Tegeh, Selan Bawak Village, Tabanan Regency so that farmers who are having rice fields that cannot drain water can be supplied with water by installing a pump 10 ha from 50 ha, the existing water has not been able to reach this far with a higher topography, it is necessary to plan how much power is needed so that the water pump can obtain enough energy to the pump can work normally.
The Effect of the Jigsaw Learning Model in Animal Tissue and Body Structure Courses on Student Problem Solving Ability Mulya Fitrah Juniawan; Wiwi Wikanta; Asy'ari Asy'ari
Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i4.3129

Abstract

This study aims to find out how students' problem-solving skills in the subject of animal body tissue and structure use the Jigsaw learning model. This type of research is quantitative research with a sample size of 70 students of the biology education study program. The research sample was taken from students who were normally distributed, had the same characteristics (homogeneous), and had the same average value. The data analysis technique uses simple linear regression. The results showed that there was a significant influence between the Jigsaw cooperative learning model in the animal tissue and body structure course on the problem-solving abilities of students in the biology education study program with a significance value of 0.000 <0.05, so that the jigsaw learning model can help students improve problem-solving skills
Effectiveness of Active Compounds of Herbal Plants as Aphrodisiacs Through Molecular Docking Against Human Phosphodiesterase-5 Receptors Septiana Indratmoko; Laela Hayu Nurani; Iis Wahyuningsih; Tia Destari Murti; Lulu Setiyabudi
Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i4.3137

Abstract

Based on the evaluation of side effects the use of sildenafil as a human phosphodiesterase 5 inhibitor drug (HPDE5) has prompted the search for new compounds that have the potential to be aphrodisiacs. The purpose of this study was to determine the interaction of the active compounds nilocitin, stigmasterol, protodioscin, icariin, yohimbine, and ginsenoside against the HPDE5 receptor as an aphrodisiac. The method used in this study was experimental conducted in silico. The metabolite structure is downloaded from the PubChem application, the protein is downloaded from PDB (Protein Data Bank) with the code 2H42. The result of this study is that the active compound may interact with HPDE5 receptors. The interaction that occurs results in the formation of van der waals bonds, hydrogen, carbon hydrogen, sigma, sulfur cation anions, T-shape and alkyls. The active compounds each have a sildenafil bond energy of -9.5 kcal/mol; niloticin -7.8 kcal/mol; stigmasterol -10.7 kcal/mol; protodioscin -13.1 kcal/mol; icariin -11.1 kcal/mol; yohimbine -10.1 kcal/mol and ginsenoside -12.1 kcal/mol with RMSD 0. The interaction with the HPDE5 receptor results in the formation of the same amino acid residue as the comparison ligand. The residual equation shows that the compounds have the same activity and can be predicted as aphrodisiacs
Formulation and Antibacterial Activity Test of Salmonella thypimurium and Lactobacillus acidophilus in Microencapsulation of Mangosteen Peel Extract Andri Kusmayadi; Lovita Adriani; Abun Abun; Muchtaridi Muchtaridi; Ujang Hidayat Tanuwiria
Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i4.3143

Abstract

Xanthone compounds in the ethanol extract of mangosteen peel have antibacterial activity against both pathogenic and beneficial bacteria. The purpose of this study was to examine the effect of various formulations of ethanol extract of mangosteen peel and maltodextrin from palm starch on Salmonella thypimurium and Lactobacillus acidophilus. This research was conducted by culturing the bacterial cultures of S. thypimurium and L. acidophilus on nutrient agar (NA) media in petri dishes according to the Kirby-Bauer method. The NA media that had been made in the petri dish was then made wells to test each treatment as much as 10 µL/disk at various concentrations (100, 75 and 50%). The formulations tested in this study consisted of: T1 (30% ethanol extract of mangosteen peel + 70% maltodextrin), T2 (40% ethanol extract of mangosteen peel + 60% maltodextrin), T3 (50% ethanol extract of mangosteen peel + 50% % maltodextrin), T4 (60% ethanol extract of mangosteen peel + 40% maltodextrin), T5 (70% ethanol extract of mangosteen peel + 30% maltodextrin), T6 (ethanol extract of mangosteen peel only), T7 (maltodextrin only), T8 (positive control containing 100 ppm bacitracin) and T9 (negative control/no treatment). The results of each sample were observed by measuring the sample inhibition zone on the growth medium that had been prepared. Data from the antibacterial activity test results were then analyzed using one-way ANOVA followed by Duncan's test. The results showed that the ethanol extract of mangosteen peel and maltodextrin had a significant effect (P<0.05) on the antibacterial activity of Salmonella thypimurium and Lactobacillus acidophilus. The results of this study indicated that the formulation of ethanol extract of mangosteen peel and maltodextrin had the ability as an antibacterial against Salmonella thypimurium and Lactobacillus acidophilus at a medium level.
Planning Counseling Methods in Supporting Sustainable Forestry Development in Simalungun Regency Sarintan Efratani Damanik; Agus Purwoko
Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i4.3145

Abstract

Simalungun Regency is an agricultural area and the main occupation of the community is agriculture. To support development in agriculture, especially in the field of community forestry, it is very necessary to be accompanied by extension workers. Forestry extension workers provide guidance and assist farmers either in the form of demonstrations or examples of work in farming to solve all the problems faced. The existence of community forestry extension workers in Simalungun Regency, the socio-economic life and knowledge of the community have changed for the better. Seeing the difficult challenges that will be faced by extension workers, it is necessary to have an accurate method in delivering the material so that farmers are willing to adopt the material from the extension worker. The data analysis technique using Process Hierarchy Analysis (AHP) is to solve problems by breaking down into groups then arranged into a form of hierarchy with a decision support system for selecting a health counseling method by determining the top priority of several criteria and existing alternatives to make decisions in the selection of counseling method planning.  The weight of the value of each alternative based on the evaluation of the weighting that has been carried out with a higher weight indicates its level of importance. So the alternative development of the independence of farmer groups selected as a sustainable forestry development strategy is in accordance with the planning of forestry extension methods
Use of Used Materials as Learning Media in Increasing Student Science Process Skills Yuliana Yenita Mete; Maimunah H. Daud
Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i4.3159

Abstract

  This study aims to find out the use of used materials as learning media in improving the science process skills of class VII students of SMP SATAP Negeri 7 Ende. This type of research is a quantitative research, experimental method and uses a pre-experimental design and a one-shot case study model, that is, there is a group given a treatment/treatment and then the results are observed. The population in this study was all students of class VII SMP SATAP Negeri 7 Ende academic year consisting of two classes with a total of 44 students and the sample was class VIIA with 22 students. The sampling technique used is simple random sampling. The data obtained from the research sample is in the form of observation data on students' science process skills. Data analysis was performed by t-test. The results of the study show that the use of used materials as learning media can improve the science process skills of class VII students of SMP SATAP Negeri 7 Ende. This is evidenced by the value of tcount ≥ ttable, that is 8.466 ≥ 1.797 with a significant level of 0.05 and dk = 31 so that H0 is rejected and H1 is accepted (the proposed hypothesis is accepted).
Analysis of Mountain Sand Material Content in Rumah Tiga and Hative Besar Villages, Teluk Ambon District Using X-Ray Diffraction (XRD) and X-Ray Fluorescence (XRF) Methods) Sisca M Sapulete; Matheus Souisa; Amirah Hanifah; Ferdinanda C. Papilaja
Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i4.3168

Abstract

One area that has a mountain sand mine is Maluku, especially Ambon City, Teluk Ambon District, Hative Besar Village, and Rumah Tiga Village. This study aims to analyze mineral content, lattice parameters/crystal size, and the percentage of elemental and oxide content that forms a material on mountain sand in Wailete, Hative Besar Village and Kota Jawa, Rumah Tiga Village, using XRD and XRF methods. The mineral content analyzed by the XR-D method at both research locations showed the presence of diffraction peaks of the relationship between angle (2θ) and intensity (I) in the diffraction pattern with the main mineral content dominated by Quartz, Cristobalite, Sodalite, Calcite-synthetic, Anorthite, and followed by other minerals. Analysis of the percentage of elemental content using the XR-F method. Based on the results of XR-F analysis, the most dominant element in Wailete mount sand is Si (Silicon) with a percentage of 66.3% then followed by Al (Aluminum) at 10.8%, Fe (Iron) at 3.75% and in Kota Jawa hill, namely Si (Silicon) is 46.2%, Al (Aluminum) is 10.8%, Fe (Iron) is 9.11% and the rest is in the form of several elements with smaller percentages, namely Rb (Rubidium) and Sr (Strontium) 0.09%.
Development of Physics Learning Assessment Instrument in Project-Based Learning Model to Improve 4C Skills Nurul Azmi; Festiyed Festiyed
Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i4.3174

Abstract

The objectives of this study were 1) to produce a physics learning assessment instrument in the PjBL model to improve students' 4C skills with valid criteria, 2) to test the practicality of the physics learning assessment instrument in the PjBL model to improve students' 4C skills. This type of research is research and development using the ADDIE model which consists of the analyze stage, design stage, and is limited to the develop stage. The object of research is the physics learning assessment instrument in the PjBL model to improve 4C skills. The data collection instruments used are validation sheets, practicality test sheets for educators and students. The data analysis technique used is validity analysis and practicality analysis of the use of assessment instruments. Based on the data analysis that has been done, two research results can be stated. First, the average value of the validity of the PjBL model assessment instrument is 0.85 valid criteria. Second, the average value of the practicality test of the PjBL model assessment instrument for educators and students is 90.00% and 86.15%, respectively, very practical criteria.
Raman Spectroscopy for Non-Destructive Detection of Pesticide on Guava Peel Edy Yulianto; Marsetiayu Ningsih; Wahyu Bahari; Ahmad Musthofa; Galuh Prihantoro; Fifit Astuti
Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i4.3202

Abstract

Pesticides are one of the substances that are widely used to protect plants from pests and plant diseases, and their use must be controlled for the public health. Currently, the pesticide contamination is determined by chromatographic, but this technique is destructive and not easy to implement. Therefore, this research is proposed to overcome these problems. Raman scattering technique as a non-destructive testing technique and easy to implement is used in this research. This technique utilizes Raman scattering resulting from laser excitation in a sample. Pesticide detection was carried out by observing the difference in Raman shift wavelength between samples containing pesticides and samples that did not contain pesticides. The experiments were done on guava peels with coated pesticide delthametrin 25 g/l. By excitation with laser wavelengths 532 nm and 785 nm, the differences in Raman shifts at wavelengths 1,225 nm and 1,480 for samples coated pesticide, and Raman shifts at wavelengths 1,008 nm and 1,480 nm for samples which is treated are obtained, respectively. From this research, it can be concluded that Raman scattering technique can be used as non-destructive and easy technique for detection pesticide contamination.

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