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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 23 Documents
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Search results for , issue "Vol. 21 No. 1 (2026): in Progress" : 23 Documents clear
Reproductive Aspects of Mangrove Crabs (Scylla sp.) Caught by Fishermen in the Bagek Kembar Essential Ecosystem Area, West Lombok Niarni, Baiq Gina Amalia; Karnan, Karnan; Kusuma, Anindita Suliya Hangesti Mandra; Mahrus, Mahrus
Jurnal Pijar Mipa Vol. 21 No. 1 (2026): in Progress
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.v21i1.9557

Abstract

Mangrove crabs are a high-value fishery resource that is closely associated with mangrove ecosystems, but their uncontrolled use has the potential to threaten the sustainability of the population. This study aims to analyze the reproductive aspects of mangrove crabs (Scylla sp.) caught by fishermen in the Bagek Kembar Essential Ecosystem Area (KEE), West Lombok, as the basis for sustainable fisheries management. The research was conducted in March-May 2025, using a quantitative survey method and observation-based data collection. The sampling technique in this study is purposive sampling. The observed parameters included gender, carapace width, body weight, gonadal maturity level (TKG), and gonadal maturity index (IKG). Data were analyzed descriptively and inferentially to describe growth patterns and reproductive conditions. The results showed a dominance of females, with a male:female ratio of 0.83:1. The relationship between carapace width and body weight is negative allometric (b < 3), indicating that carapace growth is faster than body weight growth. The distribution of TKG is dominated by TKG I and III, while the average IKG ranges from 2.05–5.72% with a frequency of 80%. The novelty of this research lies in providing location-based mangrove crab reproductive data in essential ecosystem areas that remain limited. The results of the study confirm the importance of regulating catch size and protecting mature gonadal individuals, and recommend further research on seasonal reproductive dynamics to support ecosystem-based fisheries management.
Phytochemical Profile and Hair Growth Activity of Marigold Flower (Tagetes erecta L.) Extract Puspitasari, Lia; Indrayoni, Putu; Septiarini, Putu Ayudia
Jurnal Pijar Mipa Vol. 21 No. 1 (2026): in Progress
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.v21i1.10388

Abstract

The Marygold flower (Tagetes erecta L.) exhibits numerous pharmacological properties. The marigold flower promotes hair development. Antioxidant substances that contribute to hair growth include alkaloids, flavonoids, tannins, and saponins. This research was conducted to determine the efficacy of ethanol extracts from Marygold flowers (Tagetes Erecta L.) as hair growers in male rabbits (Oryctolagus cuniculus). In a post-test-only control-group design, this study employed an experimental methodology. Thirty male rabbits served as test subjects in this study, which used one-way ANOVA. The KTL method was used in this study to determine the chemical constituent content of the ethanol extract of Marygold flowers at 5%, 10%, and 20% concentrations. Then, the length and density of the rabbit hair were measured to test the activity of hair growth. On days 7, 14, and 21, hair growth length was measured. On day 21, however, hair weight (density) was measured. Compounds from the flavonoid group (Rf 0.50 & 0.76), tannins (Rf 0.33 & 0.64), saponins (Rf 0.36 & 0.80), and alkaloids (Rf 0.33 & 0.62) were all positively present in the Marygold flower ethanol extract. The 20% concentration of Marygold flower ethanol extract exhibited the highest activity (p<0.05) in tests of hair density and length growth. The ethanol extract from Marygold flowers promotes hair growth in male rabbits, making their hair longer and denser.
Preparation and Evaluation of Capsule Shell Films Formulated from Brown Seaweed Alginate (Sargassum crassifolium) El Viera, Baiq Vera; Saepudin, Syumillah; As Saidah, Luthfiyah Irbah
Jurnal Pijar Mipa Vol. 21 No. 1 (2026): in Progress
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.v21i1.10824

Abstract

Brown seaweed (Sargassum crassifolium) grows a lot along the coast of Indonesia, especially in the Pangandaran area. Brown seaweed may serve as a viable natural source of sodium alginate, a biopolymer extensively utilized in pharmaceutical dosage forms. Most capsule shells are made of gelatin, but as more people seek alternatives to animal products, alginate-based materials are being explored. This study aimed to extract sodium alginate from Sargassum crassifolium and fabricate capsule-shell films, subsequently evaluating their physicochemical properties. To obtain sodium alginate powder, the extraction process involved the following steps: acid pretreatment, alkaline immersion, sodium carbonate extraction, bleaching, precipitation, and drying. The extracted material had a moisture content of 12% and a yield of 26.21%. FTIR spectroscopy confirmed the structure of the extracted material by showing that its functional groups, such as hydroxyl, carbonyl, C–O–H, and C–O–C, were the same as those of standard sodium alginate. Capsule-shell films were prepared by varying the alginate concentration in the casting volume to 3%, 4%, and 5%. Organoleptic testing showed that all formulations produced films that were slightly brown, opaque, and felt like paper. Tests on thickness and weight showed that films with higher alginate concentrations were thicker and heavier. F3-1 had a thickness value that was closest to what is needed for commercial hard capsules, and F1-2 had a moisture content range that was acceptable for commercial capsule shells. The moisture content of the formulations ranged from 8% to 24%, depending on the temperature, humidity, and length of time they were dried. All formulations produced films that could be used, but F3-1 had the best thickness, and F1-2 had the correct moisture content, supporting their potential application as non-gelatin capsule-shell alternatives.
Effect of Immersion Media on the Swelling Degree of Banana Peel Extract-Based Biofilm Ismail, Muthia Muthmainnah; Setiana, Mira
Jurnal Pijar Mipa Vol. 21 No. 1 (2026): in Progress
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.v21i1.10901

Abstract

The waste from banana peels has bioactive chemicals that could be exploited as natural biomaterials for wound dressings. The amount of swelling in a biofilm is one of the most crucial things that impacts how effectively it works for wound care. This is because it changes how much water it can hold and how solid its structure is. The purpose of this study is to determine the impact of immersion media on the swelling of banana peel extract-based biofilms. We mixed banana peel extract with gelatin at 0.1, 0.3, and 0.5 mL to form biofilms. We tested for swelling in distilled water and a 0.9% NaCl solution for 10 to 30 minutes. We calculated out how much the swelling changed by comparing the weights before and after immersion. After that, we looked at the data by finding the average swelling numbers. The findings indicated that biofilms immersed in NaCl solution exhibited greater swelling than those immersed in pure water. This means that ionic interactions affect how polymer networks grow. The biofilm with 0.3 mL of extract swelled the most, although greater concentrations of extract made the swelling more controllable. These findings indicate that the concentration of the extract and the nature of the immersion medium significantly influence the swelling behavior of banana peel extract-based biofilms. This work provides scientists with insights into enhancing natural biofilm compositions for use as stable and absorbent, eco-friendly wound dressings.
Effect of the Problem-Based Learning Model on Critical Thinking Skills and Biology Learning Outcomes Yanti, Risma; Jamaluddin, Jamaluddin; Merta, I Wayan
Jurnal Pijar Mipa Vol. 21 No. 1 (2026): in Progress
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.v21i1.11311

Abstract

Biology learning requires the development of critical thinking skills and learning outcomes through meaningful and contextual processes; however, classroom instruction is often still dominated by conventional approaches. This study aimed to analyze the effect of implementing the Problem-Based Learning (PBL) model on the critical thinking skills and Biology learning outcomes of Grade XI students at SMA Negeri 4 Praya. This research employed a quasi-experimental design with a pre-test–post-test control group. The participants were Grade XI students, divided into an experimental and a control class. The research instruments included a critical thinking skills test based on Ennis' (1996) indicators and a Biology learning outcomes test based on curriculum competencies. The results showed that students in the experimental class achieved significantly higher improvements in both critical thinking skills and learning outcomes compared to the control class. Statistical analysis indicated that implementing the Problem-Based Learning model had a positive, significant effect on student performance. These findings suggest that the PBL model promotes active and meaningful learning, making it an effective approach for enhancing critical thinking skills and Biology learning outcomes among Grade XI students.
Effect of Administration og the Ovaspec Hormone with Different Doses on the Reproduction of Dumbo Catfish (Clarias gariepinus) Diansyah, Ahmad; Junaidi, Muhammad; Setyono, Bagus Dwi Hari
Jurnal Pijar Mipa Vol. 21 No. 1 (2026): in Progress
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.v21i1.9757

Abstract

African catfish are freshwater fish that have long been cultivated in Indonesia. African catfish grow quickly, are highly resilient to environmental conditions, and reproduce rapidly. The critical phase in producing fish fry is the larval stage, during which the fry reach the post-larval stage (fry) and measure 1-3 cm. Fish spawning can be accelerated by manipulating conditions, such as injecting hormones into the fish. Therefore, when conducting artificial spawning, it is important to know the correct hormone type and dosage. The aim of this research was to determine the effects of different ovaspec injection doses on spawning time, egg hatchability, and survival of African catfish (Clarias gariepinus) larvae. This research used a Completely Randomized Design (CRD) with 4 treatments repeated 3 times. The treatments in this study used different doses of Ovaspec. The ovaspec dose is 0 ml/kg, the ovaspec dose is 0.4 ml/kg, the ovaspec dose is 0.6 ml/kg, and the ovaspec dose is 0.8 ml/kg. The parameters calculated are spawning latency, fecundity, egg hatchability, larval survival and water quality. The results of this study show that the ovaspec hormone can influence the latency to spawning, egg hatchability and survival of African catfish larvae. The best dose in this study was 0.4 ml/kg, which resulted in an average fastest spawning latency of 521.33 minutes, egg hatchability of 84.47%, and larval survival of 77%.
Evaluation of the Rationality of Hypertension Treatment in Indonesia Based on JNC 7 and JNC 8 Treatment Standards: A Review Sagala, Pratama Immanuel Parlinggoman; Atika, Atika; Kalalo, Jef Gishard Kristo
Jurnal Pijar Mipa Vol. 21 No. 1 (2026): in Progress
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.v21i1.10574

Abstract

Hypertension is a multifactorial chronic disease and a leading cause of global morbidity and mortality, with a high prevalence in Indonesia. Irrational pharmacotherapy can reduce therapeutic effectiveness, increase the risk of adverse drug reactions, and exacerbate the economic burden on the healthcare system. This study aims to evaluate the rationality of hypertension treatment in Indonesia based on the Joint National Committee 7 (JNC 7) and 8 (JNC 8) therapy standards. A literature review was conducted on research articles accessed via Google Scholar, published between 2015 and 2025. Of the 675 identified articles, 10 met the inclusion criteria, which required that the articles contain percentage data on the rationality of hypertension treatment and use JNC 7 or JNC 8 as a reference. The results indicate that the appropriate indication aspect achieved the highest level of adherence, with 8 out of 10 studies (80%) reporting 100% compliance. The aspect of appropriate dosage was also high, exceeding 97% in 9 studies (90%). However, the appropriate drug selection rate showed wide variation, ranging from 48.65% to 100%. This inconsistency was primarily attributed to the prevalent use of monotherapy in stage 2 hypertension patients, for whom combination therapy is recommended. Calcium Channel Blockers (CCBs), particularly amlodipine, were the most frequently prescribed antihypertensive class, dominating the prescribing patterns in 8 out of the 10 studies (80%). In conclusion, hypertension treatment in Indonesia demonstrates a high degree of rationality concerning indication, drug selection, and dosage appropriateness, aligning with JNC standards to achieve optimal blood pressure control.
DHT (Diapers Hydrogel and Tajin) Fertilizer: Liquid Organic Fertilizer for the Growth of Chili Pepper Plants (Capsicum frustencens) Hidayat, Mochammad Nasrul
Jurnal Pijar Mipa Vol. 21 No. 1 (2026): in Progress
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.v21i1.10834

Abstract

The issue of disposable diaper waste is a significant environmental challenge because it is difficult to decompose, taking between 250 and 500 years, and leads to widespread pollution. The rising volume of diaper waste and the suboptimal disposal of rice wash water (air tajin) require innovative solutions. This research offers a novel approach by integrating the water retention capacity of diaper hydrogel with the nutritional benefits of rice wash water into a single Liquid Organic Fertilizer (LOF) formulation. A nutritional hydrogel derived from used diapers can absorb baby urine, which contains ammonia (approximately 60%) and urea (approximately 35%), both of which are essential nutrients for plants. DHT Fertilizer is created by extracting hydrogel from cleaned, used diapers. The hydrogel is heated to 50 °C for 60 minutes, then mixed with 60 mL of rice wash water. This study aims to repurpose these waste materials into "DHT Fertilizer" and test its effectiveness on the growth of bird's eye chili (Capsicum frutescens). Experimental Design: This quantitative experiment involved one control plant and one treatment plant, each with a single replication, and was observed over a two-week period. The independent variable was the dosage of DHT Fertilizer, and the dependent variable was the growth of the chili plants. The fertilizer was applied by spraying the plants twice daily, in the morning and evening. The results show that DHT Fertilizer significantly and rapidly increases the growth of bird's eye chili compared to the control plant. This accelerated growth is driven by the ammonia and urea content, while the vitamin B and E components from the rice wash water improve the plant’s resistance to weather changes. Additionally, the hydrogel component helps the plant absorb and store water efficiently. DHT Fertilizer serves as an eco-friendly, efficient, and easy-to-use solution to overcome growth vulnerabilities in chili plants.
Effect of Guided Inquiry on the Development of Critical Thinking in Science Learning in Junior High School Students: A Review Hidayat, Calsabila Syasre; Wahyuni, Sri; Astuti, Sri Rejeki Dwi; Barid, Siti Shofa Assyifa`ul Qulbi
Jurnal Pijar Mipa Vol. 21 No. 1 (2026): in Progress
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.v21i1.10904

Abstract

Students in the 21st century are required to develop advanced thinking skills, especially critical thinking skills, which are essential for dealing with technological advances and scientific developments. Results from international studies indicate that Indonesian students, particularly at the junior high school level, still have relatively low critical thinking skills. This study aims to determine the extent to which guided inquiry approaches can strengthen critical thinking skills among junior high school students. The method used in this study was a Systematic Literature Review (SLR) that adopted the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) approach. The articles analyzed are national and international publications from 2015 to 2025 that are relevant to the topics of Guided Inquiry and critical thinking skills. The synthesis results indicate that guided learning models are consistently effective at enhancing critical thinking skills, particularly in analysis, evaluation, and conclusion. This model requires students to be active in scientific investigation, engage in reflective thinking, and connect concepts to real-life contexts. The integration of the STEM approach, digital learning media, and local contexts further strengthens its effectiveness in shaping scientific and collaborative mindsets. The uniqueness of this study is evident in its comprehensive synthesis of the application of guided learning approaches in the 21st-century context, which emphasizes the integration of technology and contextual learning as a strategy for enhancing critical thinking. This study concludes that the Guided Inquiry Learning Model is an adaptive, innovative, and relevant learning model for strengthening critical thinking skills in the modern era, especially at the junior high school level.
Integration of Problem-Based Learning in Science Learning with Digital Learning to Improve Critical Thinking and Collaboration Skills: A Review Mardiyah, Ainun; Wahyuni, Sri; Barid, Siti Shofa Assyifaul Qulbi; Astuti, Sri Rejeki Dwi
Jurnal Pijar Mipa Vol. 21 No. 1 (2026): in Progress
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.v21i1.10915

Abstract

The integration of digital-based Problem-Based Learning (PBL) is increasingly important to support learning that demands critical thinking and collaboration skills in the technological era. This approach allows the exploration and investigation process to be carried out in a more interactive, flexible, and student-centered manner, making it relevant for improving the quality of 21st-century learning. This study aims to explore the forms of digital PBL implementation and its impact on student competencies through a systematic review. The method used is a Systematic Literature Review (SLR) with article searches in Publish or Perish version 8 and Google Scholar, using the keywords “Problem-Based Learning,” “digital learning,” “critical thinking,” and “collaboration” for the period 2020-2025. The selection process followed PRISMA 2020, resulting in 15 articles meeting the inclusion criteria from the initial 200 articles. Data analysis was conducted using a thematic descriptive approach to identify patterns in findings across three main themes: forms of digital PBL implementation, its effects on critical thinking and collaboration skills, and implementation challenges. The results of the study show that technologies such as Nearpod, Padlet, blended learning, mobile learning, and interactive media play an important role in enriching the PBL stages, while also improving critical thinking and collaboration skills by supporting information access and more dynamic learning interactions. However, implementing digital PBL faces obstacles, including limited facilities, teacher readiness, and variations in students' digital literacy. This study confirms that digital PBL has great potential to improve learning quality, with implications for facilities, teacher training, and the strengthening of digital competencies. Further studies are recommended to develop a more adaptive digital PBL integration model and media innovations that are appropriate for future learning needs.

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