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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 1,179 Documents
 101   102   103   104   105 
Total Flavonoid Content and In Vitro Anti-Inflammatory Potentials of Kombucha with Enrichment of Butterfly Pea (Clitoria ternatea) Flower Extract Wahyanto, Kharisma Nareswari; Agustini, Rudiana
Jurnal Pijar Mipa Vol. 19 No. 2 (2024): March 2024
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.v19i2.6320

Abstract

Kombucha is a fermented beverage from tea (Camellia sinensis) that is claimed to be beneficial for several medical ailments. Several studies have conducted nutritional enrichment of kombucha to optimize its nutritional benefits. One of the native Indonesian plants that can be utilized as nutritional enrichment material is the butterfly pea (Clitoria ternatea) flower. Its nutrition is expected to increase the health benefits of kombucha Camellia sinensis. Kombucha has beneficial compounds such as flavonoids that have potential applications in medical chemistry due to its anti-inflammatory properties. This study aims to enrich the valuable nutrition and test the in vitro anti-inflammatory potentials of kombucha, conducted by formulating kombuchaCamellia sinensis with Clitoria ternatea flower extract addition (0; 0.5; 1; 1.5; 2)% (m/v), the chemical characterization including pH value test using digital pH meter and total flavonoid content (TFC) using colorimetric (AlCl3) assay) with quercetin as its standard, and in vitro anti-inflammatory activity test using the red blood cell (RBC) membrane stabilization method. The result showed that the pH value of kombucha had met the consumption quality standard (3-4), starting from 3,30 + 0,00 (0%) to 3,66 + 0,01 (2%). The flavonoid content increased from 38,89 + 0,05 mgQE/g (0%) to 126,73 + 0,13 mgQE/g (2%). Kombucha samples showed anti-inflammatory activity potentials with the best IC50 value of 140,22 ppm (2% addition). The data from this study were analyzed using a one-way ANOVA statistical test. It shows there is an influence from the addition of Clitoria ternatea to the TFC result (p<0,05), and it continued to Duncan's Multiple Range test (DMRT) that showed sample F0 to F4 were significantly different from each other (p<0,05). In conclusion, the enrichment of kombucha (Camellia sinensis) using Clitoria ternatea flower extract has been proven to increase the health-beneficial compound (flavonoids) and have potential anti-inflammatory activity.
Analysis of Students Creative Thinking Abilities Through Project-Based Learning in Environmental Knowledge Courses Haswan, Haswan; Ridzal, Dewi Asriani; Rosnawati, Veni
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
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.v19i1.6328

Abstract

The competency of creative thinking for students is very important in the era of global competition because of the level of complexity. This is because creative thinking skills are included in the six competencies that must be possessed in competition in the 21st century. This is because creative thinking skills are included in the six competencies that must be possessed in facing competition in the 21st century. Project-based learning is one method that can be used to train and improve students' creative thinking skills. This research aims to analyze students' critical thinking abilities through a project-based learning model in environmental knowledge courses. The method used in this research is descriptive. The research subjects consisted of 38 participants. The instrument used in this research is an essay test, and four indicators of creative thinking skills are considered: fluency thinking, flexible thinking, original thinking, and elaboration ability. The data analysis technique used is descriptive. The research results show that students' creative thinking abilities in environmental knowledge courses are in the high (creative) category, with a total score for all indicators is 74,75. It indicates that project-based learning is an effective strategy adapted to train and improve students' creative thinking abilities. Project-based learning is an innovative student-centered learning method where students can work autonomously to construct their learning. This is thought to cause students' creative thinking ability scores in environmental knowledge courses to be in the high category.
Development of Student Worksheets Assisted by Powtoon Media on Elasticity and Hooke's Law to Improve Student Learning Outcomes Magrib, Yunisa Sy; Supartin; Jahja, Mohammad
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
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.v19i1.6331

Abstract

This research is a type of development research (Research and Development). with the aim of knowing the quality (Validity, Practicality, and effectiveness) of student worksheets assisted by Powtoon media on the material Elasticity and Hooke's Law. This research is a type of development research that refers to 4-D Model development research consisting of four development stages, namely Defining, Designing, Developing, and Disseminating. After being validated by 3 validators, a limited trial was carried out by 36 class XI participants at SMA Negeri 1 Kabila. Data collection techniques in this research used expert validation sheets, teacher and student response questionnaires, and student learning outcome tests. The research results show that validation is in the "valid" category. The practicality of students' worksheets assisted by Powtoon media can be seen from the results of the implementation of learning in class, and teachers and students show the category "very well implemented." It can be concluded that the worksheet for students developed with the help of Powtoon media has met the criteria of being valid, practical, and effective so that it is suitable for use in physics learning at school. The difference between this research and research conducted by researchers lies in the media used, the materials used, and the location studied. Another difference is that researchers only use 3 stages in the four-D model, namely define, design, and develop.
The Effect of Natural Plant Growth Regulator Concentration of Indian Red Onions on the Growth of Euphorbia (Euphorbia geroldii) Flowers Mahfudhah, Dzikra Nasyaya; Anggarani, Mirwa Adiprahara
Jurnal Pijar Mipa Vol. 19 No. 2 (2024): March 2024
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.v19i2.6363

Abstract

The euphorbia flower (euphorbia geroldii), widely used by the public as an ornamental plant because of its visual beauty, has an aesthetic function and health benefits that still need to be researched. The euphorbia genus has antimicrobial, antioxidant, and antidiabetic activity, which comes from its abundant terpenoid compounds, flavonoids, and other phytochemical compounds. Due to these high benefits, optimization of cultivation is carried out by adding phytohormones, better known as Growth Regulatory Regulator (PGR), further to increase the quality and quantity of euphorbia flowers so that the economic value will also increase in the realm of the agricultural industry. This research aims to analyze the effect of the natural PGR concentration of red onions (Allium cepa L.) on the growth of euphorbia flowers, including the parameters of the number of flowers on one tree, the time the buds appear, and the duration of flower survival. The research method used was quantitative experimental using a one-factor Randomized Block Design (RBD), namely testing the effect of several variations in PGR concentration (0%, 1%, 3%, 5%, 7%, and 10%) and statistically analyzed using SPSS. The results of the research show that all variations in PGR concentration have a positive effect on all parameters, where the PGR concentration of 10% indicates the highest increase, including the average number of flowers on one tree, which is 13 flowers, the average time for buds to appear is 2.5 times in one week. The average duration of flower survival is 139.5 hours. It can be concluded that the natural PGR of red onions has a positive effect on all parameters, with the highest results shown at a concentration variation of 10%.
Analysis of the Need for Developing an Ethnoscience-Based Module on Plant Material Biology (Plantae) to Improving Learning Outcomes Anattri, Lega; Yelianti, Upik; Subagyo, Agus; Falani, Ilham
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
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.v19i1.6378

Abstract

The development of ethnoscience-based modules in biology learning, especially on plant material (Plantae), is an essential aspect of efforts to improve learning outcomes. By combining ethnographic and scientific approaches, this module is expected to consider students' cultural context better so as to increase their engagement and understanding of the material. This research aims to analyze the need to develop ethnoscience-based modules, and the importance of analyzing module needs today as an effort to improve biology learning outcomes on plant material (Plantae). This research uses qualitative research with a descriptive approach. The research method used is development research with stages that include identifying needs, planning, development, testing, and evaluation. The sampling technique was carried out using purposive sampling, with a sample of 60 students, and only 10 students, as well as 3 biology subject teachers at SMAN 1 Sungai Penuh, were selected for interviews. Data was collected through observation, field studies, documentation, and interviews and analyzed descriptively. The needs identification results show that there is a high need for the development of ethnoscience-based modules to strengthen students' understanding of plant material. The module is designed by considering the local cultural context and traditional knowledge, which can increase students' absorption of learning material. Module trials were carried out involving students as research subjects, and the results showed a significant increase in understanding of plant material. In addition, the positive response from students and teachers to the module confirms its effectiveness in improving biology learning outcomes. The newest thing in this research is a module developed with elements of ethnoscience by combining scientific concepts with scientific concepts that exist in society so that they can be expressed in a module. So, it can be concluded that the analysis of module needs is indeed critical and necessary in biology learning, especially plant material, which teachers and students can use.
Utilization of Hydroxyapatite-Chitosan-Bay Leaf Oil (Syzygium Polyanthum W.) as Antibacterial for Streptococcus Mutants Adriani, Sherly Wahyu; Cahyaningrum, Sari Edi
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
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.v19i1.6379

Abstract

Dental caries is a disease that can damage hard tooth tissue caused by the activity of Streptococcus mutans bacteria. Streptococcus mutans bacteria are the leading cause of dental caries disease. Efforts to prevent dental caries can be made using toothpaste, but toothpaste cannot reach areas that are difficult to reach with a toothbrush. Another method that can be used is mouthwash. This study was developed with the active ingredient compound HAp-chitosan-bay leaf oil in mouthwash to have an antimicrobial effect to prevent dental caries. This study aimed to determine the chemical physics characteristics and antibacterial activity of mouthwash preparations based on hydroxyapatite-chitosan-bay leaf oil. In this study, the active ingredients hydroxyapatite-chitosan-bay leaf oil was used with variations in the concentration of bay leaf oil, namely 0.5, 1.5, and 2.5 %. FT-IR characterization showed the presence of OH, N-H, CH, C=O, C=C, C-O, and PO43- functional groups. The pH test on the mouthwash showed compliance with the quality standard for mouthwash pH, which has a pH range of 5-7. The homogeneity test results in the mouthwash preparation showed no sediment or separation. Antibacterial activity testing showed that the HAp-chitosan-bay leaf oil mouthwash preparation inhibited the growth of Streptococcus mutans bacteria. The inhibition zone in the strong category with an average of 12.75 mm was shown in the HAp-chitosan-bay leaf oil mouthwash preparation formulation with a concentration of 2.5% bay leaf oil with the addition of sodium lauryl sulfate (SLS).
The Activity Test of Dewandaru Fruit (Eeugenia uniflora L.) in Trachea of Male Mice (Mus musculus L.) Which Exposed to Cigarette Smoke Antari, Ni Wayan Sukma
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
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.v19i1.6385

Abstract

Smoking has a serious negative impact on health because cigarettes contain harmful chemical compounds. To combat these negative effects, using natural antioxidants such as Dewadaru fruit has become the research focus. Dewandaru contains high antioxidants, namely flavonoids, anthocyanins, saponins, and tannins, which can fight free radicals in the body. The trachea is an air channel between the larynx and bronchi. To identify the activity test of dewandaru fruit (Eugenia uniflora L.) in the trachea of male mice (Mus musculus L.) exposed to cigarette smoke. This study employed true experimental di laboratory with post-test only control group design, probability sampling. The data were analyzed by using Shapiro Wilk and followed by the ANOVA test and Duncan's test. The finding showed that administering a Dewadaru fruit filter could maintain the histopathology of the male mice trachea exposed to cigarette smoke (P<0.05). Dewandaru fruit filter (Eugenia uniflora L.) has activity in the trachea exposed to cigarette smoke among male mice. Using a Dewadaru fruit filter also affects the presence of cilia, goblet cells, epithelial height, and lumen diameter in the trachea of male mice.
Student Preferences in Choosing Chemistry as an Elective Course in Phase F of the Merdeka Curriculum Wella, Wella Aulia Putri; Andika, Andika Prasetya; Desi, Desi Handayani; Muktiningsih, Muktiningsih; Ridwan, Achmad
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
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.v19i1.6386

Abstract

The Merdeka Curriculum differs from the 2013 curriculum regarding elective subjects. The Merdeka Curriculum has no more specialization groups such as science, social studies or language. Merdeka Curriculum allows students to choose elective subjects that suit their interests, talents and abilities when entering phase F at the Senior High School level. Schools must open at least seven elective subjects adjusted to the characteristics and human resources owned by the school. Chemistry is one of the elective subjects that students can choose in Phase F of the Merdeka Curriculum. This study aims to determine the factors that make students choose chemistry as their elective subject in Phase F of the Merdeka Curriculum. This research was conducted at SMA Negeri 17 Jakarta in the 2023-2024 academic year. The research subjects were students in chemistry specialization classes: XI-A Chemistry and XI-B Chemistry. This research uses a qualitative method with a case study research type. Sampling in this study used a purposive sampling technique with certain considerations. Sampling in this study used a purposive sampling technique with certain considerations. Data collection techniques were carried out through interviews with nine students in chemistry specialization classes, and the data obtained were analyzed qualitatively with stages, namely data reduction, conclusions, and verification. The results showed that intrinsic and extrinsic factors influence students' tendency to choose chemistry as their chosen subject. Intrinsic factors include interest in chemistry, academic value, and future study or career plans. Intrinsic factors influencing students most are future study or career plans and individual interest in chemistry. In contrast, extrinsic factors include family factors, friend factors, teacher factors, and support from schools. The extrinsic factor that most influences students is the teacher factor.
The Effect of Substitution of LDPE Plastic, Coconut Fiber, and Seashell as Mixed Raw Materials for Paving Blocks Ratnawati, Kania; Nisah, Firda Ainun; Azizie, Yona Tasya
Jurnal Pijar Mipa Vol. 19 No. 1 (2024): January 2024
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.v19i1.6392

Abstract

Human life is inseparable from the use of plastic in everyday life. LDPE plastic significantly impacts the environment as it is difficult to decompose naturally. On the other hand, natural waste such as seashells and coconut fiber are often found without further processing needs to recycle. To overcome this issue, there must be an effort to recycle these wastes. This research aims to determine the substitution effects of recycled products (LDPE plastic, seashells, coconut fiber) in producing paving blocks. The paving block is made with 2 main variations: a mixture of LDPE plastic and seashells (X1 and X2) and a mixture of LDPE plastic and coconut fiber (Y1 and Y2). The results show that paving block X has a higher compressive strength than paving block Y. The best paving block mixture is variation X2, which has a maximum load of 11 kN, a compressive strength of 46.797 kgf/cm2, and a maximum water absorption capacity of 4,8 %. The compressive strength values from the variations of the produced paving blocks are below the quality requirements set by SNI03-060292-1996. However, producing paving blocks with LDPE plastic, seashells, and coconut fiber can positively address waste issues in the Karawang Regency community through recycling practices.
The Influence of Guided Inquiry Learning Models on Students Creative Thinking Abilities on Reaction Rate Material Hutami, Sulia; Burhanuddin, Burhanuddin; Ariani, Sunniarti; Al Idrus, Syarifah Wahidah
Jurnal Pijar Mipa Vol. 19 No. 4 (2024): July 2024
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.v19i1.6393

Abstract

This research examines the effect of the guided inquiry learning model on students' creative thinking abilities, focusing on studying chemical reaction rate material in Class XI Science at SMAN 4 Praya. This research adopts a quantitative research design with a quasi-experimental research type. The population in this study were all class XI MIPA students at SMAN 4 Praya, consisting of 237 people spread across 7 classes. The sampling technique uses non-probability sampling, seeing a similarity in students' average daily test scores with students in classes XI IPA 3 as the control class and XI IPA 6 as the experimental class. The experimental group was given a guided inquiry learning model, while the control group used conventional teaching methods. This research assesses creative thinking abilities through a description test including three indicators: originality, fluency, and flexibility. In this research, the data analysis technique uses a series of statistical tests, including the Kolmogorov-Smirnov normality and homogeneity tests. Hypothesis testing uses the independent sample t-test. The hypothesis test showed that the t-test results prove that tcount ≥ ttable , namely 4.31 ≥ 2.03, and a significant value of 0.00 ˃ 0.05, then H0 is rejected, and H1 is accepted. Thus, it can be concluded that the guided inquiry learning model positively affects students' creative thinking abilities in the reaction rate material for class XI Science at SMAN 4 Praya. This can also be seen from the results that the average value of the experimental group is higher than the control group's, with the experimental class's average value being 79.03% and the average value of the control class being 62.42%.

Page 103 of 118 | Total Record : 1179

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