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INDONESIA
PENA SAINS
Published by Universitas Trunojoyo Madura
ISSN : 24072311     EISSN : 25277634     DOI : -
Core Subject : Science, Education, Agriculture,
Agriculture, Biological Sciences & Forestry Chemistry Mathematics Physics
Jurnal Pena Sains (p-ISSN: 2407-2311) (e-ISSN: 2527-7634) is published by Natural Science Education Study Program, University of Trunojoyo Madura as a medium to improve the creativity of lecturer, academics, practitioners, researchers, relating to the science education and science. The journal is published twice a year in April and October. Jurnal Pena Sains in collaboration with the Perkumpulan Pendidik IPA Indonesia (PPII).
Arjuna Subject : -
Articles 179 Documents
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Utilization And Characterizaation Of CaO Nanocatalyst From Duck Eggshell Impregnated With NaOH And Its Application In Biodiesel Production From Cooking Oil dede Arief Mahendra
JURNAL PENA SAINS Vol 12, No 2 (2025): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v12i2.31849

Abstract

Global energy demand, including in Indonesia, remains heavily dependent on non-renewable sources (fossil fuels), whose reserves are steadily depleting. The combustion of these fuels releases various pollutants into the atmosphere, including carbon dioxide (CO₂), sulfur dioxide (SO₂), and nitrogen oxides (NOx), which contribute to air pollution, acid rain, climate change, and adverse human health effects such as respiratory and cardiovascular diseases. This condition underscores the urgent need for the development of environmentally friendly alternative fuels such as biodiesel. This study aims to synthesize biodiesel from waste cooking oil through a transesterification reaction using a catalyst derived from duck eggshells, which was converted into a NaOH-impregnated CaO nanocatalyst. The nanocatalyst was prepared via the sol-gel method with continuous stirring for 3 hours at 4000 rpm. NaOH impregnation was applied at concentrations of 35%, 45%, and 55% of the total catalyst weight. The resulting sol-gel was separated from the residue, dried, and then calcined at 900°C for 1 hour, producing nanocatalysts designated as 35NaOH/CaO, 45NaOH/CaO, and 55NaOH/CaO. The catalysts were characterized using FTIR, XRD, and PSA. The transesterification reaction was carried out at 60°C for 2 hours, with an oil-to-methanol molar ratio of 1:9 and a catalyst loading of 3% by weight relative to the oil. The biodiesel produced was characterized using GC-MS, yielding the highest methyl ester content of 99.89% with the 55NaOH/CaO catalyst. These results indicate that the biodiesel produced had a high level of purity and complied with the EN 14103 standard.
EVALUATING POWER METER APPLICATIONS FOR DYNAMIC ELECTRICITY EXPERIMENTS IN MIDDLE SCHOOL SCIENCE LABS Diana Maulidia; Eka Cahya Prima
JURNAL PENA SAINS Vol 13, No 1 (2026): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v13i1.28072

Abstract

Integrating power meters into the science curriculum can significantly enhance students' understanding of technology and energy usage. Comprehending electricity enables pupils to grasp the operation of these gadgets, fostering practical knowledge and abilities. Teachers can assist students in understanding the financial and environmental consequences of their energy consumption patterns by including them in activities that encourage scientific investigation into the use of electronic devices at home. With more knowledge comes the possibility to make more thoughtful decisions about how much power to use, which might result in increased energy efficiency and financial savings. This is particularly important when it comes to electrical equipment, since improper use habits and increased energy expenses can arise from a lack of technology literacy. This research paper explores the implementation of Taffware Power Meters in the IPSE UPI laboratory to provide students with hands-on experience in measuring and analyzing energy consumption.  The study involves using various LED lamps with different wattages to demonstrate the practical applications of power meters in the classroom. Experimental findings have revealed a direct proportionality between electrical energy and time, while the measured power values of lamps closely match their rated specifications, except when the lamp power exceeds 8 watts, where discrepancies are observed.
ACTIVATED CARBON-BASED TREATMENT AS AN ALTERNATIVE SOLUTION FOR BATIK WASTEWATER POLLUTION IN TANJUNG BUMI, MADURA Yunin Hidayati; Ginta Siahaan
JURNAL PENA SAINS Vol 13, No 1 (2026): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v13i1.32022

Abstract

The vast majority the batik industry produces batik waste containing synthetic dyes that is harmful to the environment. The batik industry is expanding in Indonesia and has an impact on economic growth and socio- cultural development. However, the development of batik industry also increases waste that has a detrimental impact on the environment, resulting in pollution. This also occurred in Tanjung Bumi, one of the centers of the batik industry on the island of Madura, Indonesia. This study aims to find an alternative technology for processing batik waste containing synthetic dyes. The use of activated carbon which is easy to obtain, cheap, simple and effective in decomposing waste is projected to be an alternative, for craftsmen, to process batik waste. The results of the Cr content test showed that there was a decrease in Cr levels in batik wastewater after being given activated carbon; there was a reduction in Cr levels up to 30.83 g/L after giving activated carbon with various concentrations for 21 days. In addition, there was also a significant decrease in the conductivity value of batik waste after being treated with activated carbon. These results indicate that activated carbon can be used as an alternative for batik wastewater treatment. However, to get more optimal results, the use of activated carbon for handling wastewater needs combination with other methods.
IDENTIFICATION OF CATALASE-PRODUCING BACTERIA IN ECOENZYMES FROM FOOD WASTE USING GEN 16S rRNA Alfi Syaifuddin; Andang Syaifudin; Asri Febriana
JURNAL PENA SAINS Vol 13, No 1 (2026): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v13i1.31878

Abstract

Food waste is a global problem that has a negative impact on the environment and society as a whole because it endangers food security and the sustainability of the food supply chain in the long term. One of the efforts made to overcome the problem of kitchen waste and food waste is by making ecoenzymes made from the fermentation of organic kitchen waste. Ecoenzymes are naturally produced through the fermentation of fruit and vegetable waste by anaerobic bacteria. Among the components of ecoenzymes is the enzyme catalase, which helps break down excess hydrogen peroxide. One source of catalase is microorganisms such as bacteria and fungi. In identifying bacteria in ecoenzymes, molecular testing using the 16S rRNA gene can be employed, as it can determine the specific type of bacteria. The objectives of this study are to determine the number of bacterial isolates producing catalase enzymes in ecoenzymes from food waste and to identify the bacterial species in ecoenzymes from food waste that produce catalase enzymes using the 16S rRNA DNA marker. This study employs an experimental research design with both qualitative and quantitative approaches. This study showed that there were three isolates (A, B, and C) that were positive for producing catalase enzymes. Based on molecular testing using the 16S rRNA gene, the three isolates were most closely related to the species B. subtilis. This study demonstrated the presence of catalase enzyme activity in ecoenzymes from food waste and the presence of B. subtilis bacteria, which play a role in disease control in plants.
EFFECTIVENESS OF VIDEO-BASED MICROLEARNING IN ENHANCING STUDENTS’ LEARNING OUTCOMES ON THE CONCEPT OF HUMAN COORDINATION SYSTEM Eka Lestari; Ismail Ismail; Nurhayati B
JURNAL PENA SAINS Vol 13, No 1 (2026): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v13i1.34439

Abstract

This study aims to determine the effectiveness of the use of microlearning video coordination system in improving the learning outcomes of grade XI students of SMA Negeri 2 Makassar. This study used a pre-experimental design method with a One Group Pretest-Posttest design. The research sample consisted of 30 grade XI Biology 1 students selected using a purposive sampling technique. The research instrument used was a multiple-choice learning outcome test consisting of 15 questions given before learning (pretest) and after learning (posttest). The research data were analyzed using descriptive statistical analysis and the N-Gain test to determine the improvement in student learning outcomes after the implementation of microlearning videos. The results showed that there was an increase in student learning outcomes after the implementation of microlearning videos. The average pretest score of 49.77 increased to 79.77 in the posttest. In addition, the results of the N-Gain analysis obtained an average of 60.83 which is in the moderate or quite effective category. Most students are in the quite effective category with a percentage of 63.43%, while 3.33% are in the effective category. These results indicate that the use of microlearning videos has a positive impact on improving student learning outcomes in the coordination system material. Therefore, microlearning videos can be used as an alternative, engaging, flexible, and effective learning medium in biology learning.
PROFILING STUDENTS’ SCIENTIFIC LITERACY SKILLS: A STUDY IN MADURA SECONDAY HIGH SCHOOL Erlina Wardani; Mochammad Yasir; Mochammad Ahied
JURNAL PENA SAINS Vol 13, No 1 (2026): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v13i1.33072

Abstract

This study aims to describe the science literacy profile of students at SMPN 1 Tanjung Bumi. The research employed a descriptive method with a quantitative approach, allowing the collected data to be processed statistically to objectively illustrate the students' level of science literacy. The subjects of this study consisted of 35 students from class VIII A who were given six science literacy test items with a duration of one lesson hour. The data were analyzed using descriptive statistics to determine the categories of science literacy proficiency. The results show that most students have a level of science literacy that needs improvement, with 51% categorized as very low, 46% as low, and only 3% as adequate, while none of the students fell into the good or very good categories. Factors contributing to the low science literacy include misconceptions of scientific concepts, poor reading ability, lack of interest in science, and unfamiliarity with long-text and contextual problem types. Based on these findings, strategies are needed to enhance science literacy through the development of innovative learning materials, improvement of reading interest, and habituation to analytical and context-based problem-solving tasks. These findings indicate the need for learning interventions grounded in local context to improve students' science literacy skills. Keywords: scientific literacy, students, junior high school
ANALYSIS OF COMMUNITY AWARENESS IN MANAGING ORGANIC WASTE AS A SOLUTION TO OVERCOME FLOOD DISASTERS Marsya Ainun Jariyah; Odi Tia Prastiti; Ayu Safira; Khansa Alia Faisyah; Novia Safitrih Betthan
JURNAL PENA SAINS Vol 13, No 1 (2026): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v13i1.33220

Abstract

This research is motivated by the frequent flooding in Laden Village, Pamekasan Regency, caused by a combination of factors: high rainfall, influx from other areas, and reduced water catchment areas due to dense settlements. The purpose of this study is to describe the conditions, causes, and impacts of flooding, as well as community and government efforts to mitigate them. This study employed descriptive qualitative research using questionnaires, interviews, and field observation methods. The study population included all residents living in the flood-prone area of Laden Village, Dusun Timur. The sample consisted of 10 purposively selected respondents, including affected residents and village officials in the flood-affected area. Field observations were conducted on September 27, 2025. Impacts experienced by the community included house damage, disruption to community activities, and an increased risk of environmental diseases. Our proposed mitigation effort involves promoting organic waste processing following the government's river dredging. The observations emphasize the importance of environmental management and spatial planning to reduce the risk of future flooding. 
IMMUNOLOGY OF INFECTION: MECHANISM OF IMMUNE RESPONSE AND IMPLICATION FOR THERAPEUTIC Lisa Savitri; Elfred Rinaldo Kasimo; Rochmad Krissanjaya
JURNAL PENA SAINS Vol 13, No 1 (2026): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v13i1.29979

Abstract

Infectious diseases, caused by pathogens such as bacteria, viruses, fungi, and parasites, continue to represent a significant global health challenge. The immune system plays a pivotal role in recognizing and eliminating these pathogens, but pathogens have evolved various mechanisms to evade immune responses, resulting in chronic infections and disease progression. This review aims to explore the mechanisms of immune responses to infections, focusing on innate and adaptive immune cells, pathogen recognition, and immune evasion strategies. The review also discusses the therapeutic implications of these findings, highlighting potential targets for developing new treatments. The innate immune response, which includes pattern recognition receptors (PRRs) such as Toll-like receptors (TLRs) and NOD-like receptors (NLRs), serves as the first line of defense. In contrast, the adaptive immune response involves T cells and B cells recognizing specific antigens on pathogens. Despite the immune system's defense mechanisms, pathogens can evade immune detection through antigenic variation and suppression of immune functions. Recent research has provided new insights into immune modulation and therapeutic targets, such as enhancing the innate immune response and targeting specific immune cell subsets. Vaccines remain a critical strategy for preventing infectious diseases. Continued advancements in immunology are crucial for developing more effective interventions to control and treat infectious diseases.
ANALYSIS OF THE IMPLEMENTATION OF OCCUPATIONAL HEALTH AND SAFETY IN SCIENCE LABORATORIES: LITERATURE REVIEW Kevin Aditia; Endah Febri Setiya Rini; Bramastia Bramastia
JURNAL PENA SAINS Vol 13, No 1 (2026): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v13i1.23231

Abstract

Occupational safety and health are an important part of supporting a smooth and safe science learning process. A laboratory with good occupational safety and health standards is able to support the effectiveness of learning while preventing dangerous accidents for students. The aim of this research is to analyze the implementation of occupational safety and health in Indonesian science laboratories. This type of research is a literature study. Examples of articles used are sourced from Google Scholar with the time period 2014-2023. The data analysis technique used is the synthetic matrix method. The research results show that the application of occupational safety and health in science laboratories is quite diverse. There are still many obstacles in science laboratories in implementing occupational safety and health according to standards which are influenced by human factors (knowledge) and infrastructure supporting occupational safety and health. The conclusion from this research is that there are obstacles to implementing occupational safety and health in science laboratories which are influenced by human factors and supporting infrastructure.

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