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Saprizal Hadisaputra
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Jurnal Pijar MIPA
Published by Universitas Mataram
ISSN : 19071744     EISSN : 24601500     DOI : -
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics
Jurnal Pijar MIPA (e-ISSN: 2460-1500 & p-ISSN: 1907-1744) is an open-access scientific periodical journal published by the Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA publishes original articles on current issues and trends in mathematics-science-science education studies. In addition, this journal addresses issues concerning environmental education and environmental science. The journal scopes are: a. Physics and Physics Education b. Chemistry and Chemistry Education c. Biology and Biology Education d. Natural Science and Science Education e. Mathematics and Mathematics Education f. Environmental and Environmental Education
Arjuna Subject : Umum - Umum
Articles 30 Documents
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Search results for , issue "Vol. 20 No. 1 (2025)" : 30 Documents clear
Effect of Extraction Temperature of Molecularly Imprinted Polymer in Chloramphenicol Adsorption using UV-Vis Spectrophotometry Based on Diazotation Reaction Oktaningtias, Eka Faradila; Sianita, Maria Monica
Jurnal Pijar Mipa Vol. 20 No. 1 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i1.8001

Abstract

Chloramphenicol is an antibiotic commonly used in aquaculture. The overuse of antibiotics poses a danger. CAP will precipitate, and the residue will accumulate in the human body, threatening human health. Efforts are made to make media to overcome the CAP problem, one of which is the manufacture of molecularly imprinted polymers. The characteristic of this polymer is a mould or template that is reacted during synthesis and then withdrawn in the extraction process to form a selective mould. One factor that affects extraction is temperature. This study aimed to determine the effect of extraction temperature on chloramphenicol adsorption. The polymerisation was carried out using the precipitation polymerization method, and extraction was done using the batch method. The test used diazotation-based Uv-Vis spectrophotometry. The temperatures used were 60,70 and 80℃, which resulted in extraction percentages of 75.64%, 89.63% and 74.08%, respectively. For the adsorption process, the concentration variation for each MIP was 10, 25, 50, 75 and 100 ppm. Higher concentrations resulted in more adsorption, but the 100 ppm concentration decreased. The test showed that temperature affected the extraction and CAP adsorption results. Polymer characterisation was carried out with FTIR Polymer NIP results showing the presence of NO2 groups characteristic of CAP found at wave numbers 1536 cm-1 and 1322 cm-1. In MIP, there is an Imprinting Factor (IF). The IF value obtained is more than 1, so it can be said that the moulding results are good.
Analysis of the Water Quality of the Iwan River in Darmaji Village, Kopang District, Central Lombok Regency Umbu, Yohanis; Melinda, Tina; Majdi, Muhamad
Jurnal Pijar Mipa Vol. 20 No. 1 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i1.8038

Abstract

The Iwan River is one of the rivers in Darmaji Village, Kopang District, Central Lombok Regency. People often use This river for daily life, washing, bathing and irrigating rice fields. People also throw household waste into river water bodies. This hamlet does not yet have clean water and a PDAM network. This research uses the pollution index method to determine the water quality of the Iwan River in Darmaji Village and the water quality status of the Iwan River in Darmaji Village. The research method used is quantitative research with an experimental approach according to Government Regulation Number 22 of 2021 and Water Quality Status with the Pollution Index. Based on the results of the Iwan River water quality, it is still below quality standards, so it is still safe for washing and agricultural activities; namely, in upstream samples, there are TSS results of 0.724 mg/L, temperature 26.8, pH 7, BOD 0.5 mg/L, COD 8 mg/L, oil and fat 1.518 mg/L and total Coliform 24000 MPN/ml while the middle sample had TSS results of 1.574mg/L, Temperature 26.7, pH 6, BOD 1.1mg/L, COD 4mg/L, oil and fat 0.066 mg/L, and total Coliform 930 MPN/ml. In downstream samples, there were TSS results of 1.68 mg/L, Temperature 26.8, pH 7, BOD 0.5 mg/L, COD 12mg/L, oil and fat 0.108mg/L and total Coliform 230MPN/ml and Based on the Pollution Index calculation results, the Iwan River is polluted (lightly polluted) but still safe to use for agriculture.
Potential of Corn Stover And Coconut Shell as Environmentally Friendly Biomass Alternative Fuel Budiyanto, Ratno; Setiawati, Titin; Rahem, Abd.
Jurnal Pijar Mipa Vol. 20 No. 1 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i1.8085

Abstract

Energy sources from non-renewable materials such as petroleum are limited and will continue to decrease. Meanwhile, efforts to find renewable energy sources as reserves require quite expensive costs with a relatively long duration. Therefore, it is necessary to research renewable energy sources, such as corn stovers and coconut shells. This study is generally carried out by making charcoal or carbonization, briquetting, and testing the quality of briquettes. The variables used in this study are the composition of corn cob charcoal and coconut shells. The composition of the mixture used consists of 5 comparative variables, namely sample A = 1: 1, sample B = 1: 2, sample C = 1: 3, sample D = 2: 1, and sample E = 3: 1 with a drying temperature of 100 oC. This study aims to produce biobriquettes from variations in the ratio of good and quality corn cob and coconut shell so that they can be used as environmentally friendly alternative fuels. This study concludes that the optimal mixture variation to produce good quality biobriquettes is found in sample C with a water content of 2.20%, ash content of 3.22%, sulfur content of 0.07%, and a calorific value of 7339 cal/gram because it has a lower optimization compared to other samples and meets the specified standards.
Fabrication of Fe3O4/PEG 4000/Oleic Acid Ferrofluids on Crystal Structure and Magnetic Properties Using Rhee Sumbawa Iron Sand Bahtiar, Syamsul; Islam, Izzul; Jayatri, Adella Ulyandana; Widyawati, Fauzi; Yanuar, Emsal
Jurnal Pijar Mipa Vol. 20 No. 1 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i1.8108

Abstract

The fabrication of ferrofluid using Fe3O4 nanoparticles synthesized from Rhee Sumbawa iron sand has been successfully carried out. This fabrication was conducted to study the crystal structure characteristics and magnetic properties of the ferrofluid from Rhee iron sand. The fabrication used the co-precipitation method at room temperature to synthesise Fe3O4 nanoparticles. In contrast, the ferrofluid fabrication employed a magnetic stirrer with the addition of PEG 4000/Oleic Acid as a surfactant. The structure and magnetic characteristics of the Fe3O4/PEG 4000/AO ferrofluid will be investigated in this work. The results of the XRF characterization show an Fe content of 91.73%, indicating that the purity of Fe has been successfully increased using a permanent magnet separation method. The XRD characterization results show the formation of a cubic crystal system with lattice parameters a=b=c = 9.3797 Å, α=β=γ = 90°, and the crystal size obtained from the refinement is 8.42 nm. The TEM characterization results indicate that the morphology of the nanoparticles is spherical with a particle size of 7.34 nm. The VSM characterization results obtained the ferrofluid magnetization value in the 0.08–0.34 emu/g range.
Antioxidant Activity Test of Salak Bali Peel Extract (Salacca zalacca var. amboinensis) Against Brain Cells of Male Mice (Mus musculus L.) Induced by Alloxan Padmiswari, Anak Agung Istri Mas; Wulansari, Nadya Treesna; Harditya, Kadek Buja; Megayanti, Sri Dewi
Jurnal Pijar Mipa Vol. 20 No. 1 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i1.8146

Abstract

This study aims to test the antioxidant activity of salak Bali peel extract (Salacca zalacca var. amboinensis) against brain cells of male mice (Mus musculus L.) exposed to alloxan. Free radicals can trigger damage to brain cells through oxidative mechanisms, which contribute to the development of various neurodegenerative diseases that can damage cells in the body. Salak Bali peel extract contains bioactive compounds such as flavonoids, tannins, and polyphenols that are antioxidant-active. This study was conducted using a completely randomized design (CRD) in mice induced by alloxan at a dose of 150 mg/kg BW (group 1), followed by oral administration of salak Bali peel extract at a dose of 4.2 mg/kg BW (group 2) and 8.4 mg/kg BW (group 3) for 35 days. The control group used in this study was alloxan, which was used to compare the treatment results with conditions without intervention so that the effects of the treatment could be identified more clearly. The results of the antioxidant analysis test using the DPPH method showed an IC50 value of the salak Bali peel extract of 45.5 µg/mL, indicating a high antioxidant capacity. Histopathological analysis revealed that administration of salak Bali peel extract could reduce necrosis in the brain tissue of mice induced by alloxan, suggesting a neuroprotective effect. Therefore, salak Bali peel extract has the potential to be a source of natural antioxidants that can be used to prevent brain damage due to oxidative stress and as a therapy for treating neurodegenerative diseases.
Potentiality to Actuality: Quantum Physics Inspires Creative Innovation Alzeer, Jawad; Benmerabet, Hamid
Jurnal Pijar Mipa Vol. 20 No. 1 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i1.8176

Abstract

Throughout history, humans have demonstrated an extraordinary capacity for creativity and innovation, driving progress and shaping our world. This innate ability to imagine, experiment, and push the boundaries of the possible is central to our identity as free-thinking individuals. To explore the cognitive, psychological, and ethical dimensions that influence the transformative process of translating creative ideas into practical realities, understanding this process as a defining characteristic of human innovation and a reflection of our unique capacity for independent thought. This research utilizes a framework that integrates cognitive psychology, neuroscience, and the principles of quantum physics to analyze the multifaceted dimensions influencing the transformation of creative ideas into reality. This framework will examine cognitive processes, psychological balance, and the alignment of material and non-material values. This research demonstrates that a holistic approach to innovation encompassing material and non-material values is crucial for realising creative potential. This aligns with the principles of quantum physics, where reality emerges from a state of potentiality through conscious observation and interaction. Cultivating free will, critical thinking, and a balanced mentality empowers individuals to harness their creative potential and contribute meaningfully to society. We can unlock human ingenuity and create a brighter future by fostering an environment that encourages independent thought and ethical decision-making.
Analysis of Residual Free Chlorine Content in Rinjani Waterpark Swimming Pool Water, East Lombok District Wahyudin, Wahyudin; Fatmalia, Enida; Yuliansari, Dini
Jurnal Pijar Mipa Vol. 20 No. 1 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i1.8182

Abstract

Water is the most essential component in daily life. One of its uses is as water in swimming pools. A swimming pool is a public place and facility in the form of a pool building used for swimming. The water used in swimming pools must have a quality that complies with the quality standards determined for the water. One of the parameters required in PERMENKES Nomor 2 Tahun 2023 is the remaining free chlorine. This research aims to analyze the residual free chlorine content in Rinjani Waterpark swimming pool water, where it is known from the results of preliminary studies that Rinjani Waterpark uses chlorine as a disinfectant to kill bacteria in the water and purify the pool water. There were several complaints from swimming pool visitors, such as eye irritation and itchy skin after swimming in that swimming pool, so further analysis was needed. The type of research used in this research is descriptive qualitative. The samples used in this research were 4 samples. The sampling technique uses total sampling. Testing was carried out at the STTL Mataram laboratory to see the free chlorine content in water samples using Mohr's Argentometry method. After conducting the research, the results were obtained that the samples that did not meet the requirements were samples with codes P1 M=2.3 mg/L, P3 M=1.77 mg/L, P4 M=2.3 mg/L, and P3 A = 0 mg/L. Visitors who want to visit the Rinjani Waterpark swimming pool are expected to use personal protective equipment (PPE) such as swimming goggles to avoid the impact of chlorine levels that are too high in the water. Swimming pool managers should pay attention to the chlorine dosage in the water so that it does not cause side effects to visitors.
Development of Interactive E-Books Based on Problem-Based Learning on the Material of the Earth's Surface Layers Lutfiani, Firda Dian; Andriani, Aldina Eka
Jurnal Pijar Mipa Vol. 20 No. 1 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i1.8196

Abstract

Limited sources of interactive electronic-based teaching materials can result in low cognitive learning outcomes for students, especially in science learning. This study aims to describe the development design and test the feasibility and effectiveness of Interactive E-Books based on Problem Based Learning in improving science learning outcomes in grade V students of SDN Ngijo 01 Semarang City. This research and development (RnD) study uses the Borg and Gall model. Data collection techniques are tests and non-tests, tests with (pre-test and post-test), and non-tests in the form of observations, interviews, questionnaires, and documentation. Data analysis was carried out using normality tests, t-tests, and N-Gain. The results of the study indicate that the development design of Interactive E-Books based on Problem Based Learning was successfully developed with the Canva and Flipbook applications, its components such as the main page, foreword, advantages of e-books, table of contents, instructions for use, activity instructions, achievement indicators, concept maps, materials based on Problem-Based Learning syntax, interactive learning videos, LKPD, educational games, and developer profiles. The feasibility of the interactive e-book from material and media experts is very feasible, supported by teacher and student assessments, which also show a very feasible category. The novelty of this study lies in the presentation of material that applies the syntax of the Problem-Based Learning model, which includes stimulus variations, grouping, presentation of results, and reflection, as well as the integration of interactive elements such as images, videos, and sounds. There are interactive edugames to facilitate understanding of the concept of the earth's surface layers. The effectiveness of the E-Book is shown by an increase in value of (15.25) supported by the results of the t-test (0.001) and the N-Gain score of (0.50) in the medium category. The research that has been conducted shows that the conclusion of this study shows that the Interactive E-Book based on Problem Based Learning has been successfully developed, is very feasible, and effective in improving the science learning outcomes of grade V students of SD N Ngijo 01 Semarang City on the material of the earth's surface layers.
Development of Interactive Multimedia Based on Problem-Based Learning to Improve Learning Outcomes of Light Properties Material Selviana, Selviana; Andriani, Aldina Eka
Jurnal Pijar Mipa Vol. 20 No. 1 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i1.8206

Abstract

The use of technology in science learning media is not optimal, causing low learning outcomes for students. This study aimed to develop a design and test the feasibility and effectiveness of interactive multimedia based on Problem-Based Learning to improve the learning outcomes of fifth-grade students of SDN Pesantren Semarang City. The type of research is Research and Development (R&D) using the Borg and Gall model. The research subjects were 26 fifth-grade students of SDN Pesantren. Data collection techniques using non-test techniques (observation, interviews, questionnaires, and documentation) and test techniques (pre-test and post-test). Data analysis techniques used normality test, t-test, and N-Gain test. The results showed that the design of Problem-Based Learning-based interactive multimedia development using the Canva application contains the main page, main menu, instructions for use, concept map, Problem-Based Learning-based learning materials, virtual laboratories (Dynamic Labs), learning videos, interactive quizzes (Genially), and developer profiles; the feasibility of Problem-Based Learning-based interactive multimedia from material experts 93.75% very feasible criteria and media experts 92.18% very feasible criteria. The results of the teacher response questionnaire are 100% very feasible criteria and 96.80% student response with very feasible criteria; the effectiveness of interactive multimedia based on Problem-Based Learning is shown from the increase in pre-test and post-test scores by 33.65, paired sample t-test results show the significance value (2-tailed) is <0.001 which based on the criteria the value is below 0.05, and the N-gain test results are 0.6913 medium criteria. This study concludes that interactive multimedia based on Problem-Based Learning was successfully developed, very feasible, and effective in improving the learning outcomes of the properties of light material for fifth-grade students of SDN Pesantren Semarang City.
Profile of Learners Argumentation Ability on Socio-Scientific Issues Fauziah, Siva; Hernawati, Diana; Rizal, Rahmat; Badriah, Liah
Jurnal Pijar Mipa Vol. 20 No. 1 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i1.8214

Abstract

This study aims to determine the profile of students' argumentation skills at MTs Idrisiyyah, Tasikmalaya Regency, in the context of Socio-Scientific Issues (SSI), which includes issues related to science and society based on the components of scientific argumentation from the Toulmin model. The study used a quantitative descriptive method; as many as 63 Grade VIII learners participated. The results of the analysis showed that the ability to claim was excellent (86%), but argumentation support such as data (64%), warrant (32%), qualifier (30%), and backing (27%) was still low. This finding indicates that although learners can convey claims well, they have difficulty supporting these claims with strong data and arguments. The results of this study are expected to be a reference for educators in designing more effective learning strategies related to the development of argumentation skills in the context of SSI.

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