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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
 97   98   99   100   101 
The effect of PGR red onion extract on the growth and yield of green mustard plants (Brassica juncea L.) Ilmiah, Mufidatul; Anggarani, Mirwa Adiprahara
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
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.v18i6.5710

Abstract

Mustard plants are green plants that can be cultivated easily in various climatic conditions and can be consumed as a companion to cooking. In addition, mustard plants have enough content to meet the human body's needs. Giving a combination of PGR concentration of red onion extract and the right combination of media composition can affect mustard plants' growth and propagation system. This study aims to determine the effect of PGR red onion extract and the best composition of planting media, as well as to know whether there is an interaction between PGR and the composition of planting media regarding the growth and production of mustard plants. Sample selection is carried out using random sampling techniques in each population. The study was conducted in July-August 2023 in the Pasuruan City area using the 2-factor RAK (Group Random Design) research method. The first factor is the concentration of PGR, which consists of control (T0), concentration of 10% (T1), concentration of 20% (T2), and concentration of 30% (T3). The second factor is the composition of the planting medium with a ratio of soil, husk charcoal, and manure, namely (1: 2: 1) and (1: 1: 2). The results showed that the PGR factor of red onion extract with a concentration of 30% had a very real influence and gave the best results on the parameters of plant height, leaf width, and wet biomass of mustard plants. Planting media factors significantly affect and provide the best results in 1: 1: 2 treatment regarding plant height parameters at age 35-42 HST and wet biomass of mustard plants. The interaction between PGR and planting media has a real effect on the wet biomass of plants but does not have a real effect on plant height and leaf width of mustard plants.
Analysis of noise levels in The Sultan Thaha Jambi Airport Area based on geographical information systems Airlangga, Garda Sasi; Peslinof, Mardian; Handayani, Linda
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
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.v18i6.5723

Abstract

This research focuses on the noise level at Sultan Thaha Jambi Airport due to aircraft activity which took place from 06.05 to 22.40 WIB. This research started from observation, collecting noise level data and measuring data. The method used is the Weighted Equivalent Continuous Perceived Noise Level (WECPNL) method to measure noise points at each measurement point. Measurement points were taken at 6 points for 24 hours/14 days. This research also uses a Geographic Information System (GIS) to map the distribution of noise levels. The research results showed that the highest noise values ​​occurred in the air side area and occurred during holidays. WECPNL results from April 27 to May 10 showed that the average noise index reached 58 to 59 (dB), close to the noise quality standard of 55 (dB). In the Liverpool airport and residential area, the purple color has an index <67 (dBA), which indicates low noise levels, while red indicates high noise level due to airport activities. WECPNL results from May 1 to May 5 had a noise index of 70.5 (dBA). 2D and 3D contour maps show that the darker the color, the lower the noise level, while the fainter the color, the higher the noise level. The benefits of this research are: For people living in the Jambi Sultan Thaha Airport area, it is hoped that they will be able to find out what effects can be caused by airport noise and know the regional zones that fall into noise level categories I, II, III.
Effects of gamal leaf extract (Gliricidia sepium Jacq.) on body weight and internal organ performance of mice (Mus musculus L.) Harlis, Wa Ode; Malik, Nurhayu; Luvita, Luvita; Resman, Resman
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
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.v18i6.5730

Abstract

Gamal leaves (Gliricidia sepium Jacq.) contain toxic compounds that have the potential to act as vegetable rodenticides, such as alkaloids, tannins, dicumerol, and hydrogen cyanic acid (HCN). Coumarin compounds can bind vitamin K, disrupt the circulatory system, and damage liver cells. The compounds dicumerol and warfarin are used as rat poison because of their anticoagulant properties, which prevent blood clots in the heart. Alkaloid and tannin compounds can damage liver cells through liver necrosis and bleeding in the digestive system. This study aims to determine the effect of Gamal leaf extract on body weight and internal organ performance in mice (Mus musculus L.). The experimental research method is based on a Completely Randomized Design (CRD) pattern. A total of 16 mice weighing 20-22 grams consisting of 4 treatments, namely A0 (water control), A1 (extract 10 mg/g BW), A2 (extract 15 mg/g BW) and A3 (extract 20 mg/g BW). The extract was given orally for 14 days, and body weight was measured every 3 days to obtain data on changes in body weight (PBB). At the end of the treatment, the mice were sacrificed using chloroform and then dissected to observe the performance of the liver, kidney and heart organs in color appearance and organ weight. Quantitative data were analyzed using one-way ANOVA and further DMRT test α=0.05. The research showed that mice's mean change in body weight (PBB) decreased significantly as the dose of Gamal leaf extract increased. The percentage of liver organ weight (BOH), kidney organ weight (BOG), and heart organ weight (BOJ) decreased as the dose of Gamal leaf extract increased. The research results concluded that Gamal leaf extract caused color changes in the internal organs of mice and significantly affected the percentage change in body weight (PBB) and internal organ weight (BOD) of mice along with increasing doses of Gamal leaf extract.
The utilization of medicinal plants local wisdom of the Salako Dayak Tribal Community in Kaliau Village, Sambas District Panjaitan, Ruqiah Ganda Putri; Titin, Titin; Afandi, Afandi; Ningsih, Kurnia; Wahyuni, Eko Sri; Fajri, Hayatul; Yuniarti, Anisyah; Tenriawaru, Andi Besse; Yeni, Laili Fitri; Aprilianti, Melda
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
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.v18i6.5744

Abstract

Kaliau Village has potential that can be further explored, both socially and culturally. One of the local wisdom owned by the Dayak Salako Tribal Community in Kaliau Village is the utilization of plants as the resources of traditional medicines. This research aims to gain information about the local wisdom of the Dayak Salako Tribal Community in Kaliau Village, Sambas Regency in using medicinal plants. This research was conducted in Kaliau Village, Sajingan Besar District, Sambas Regency, West Kalimantan Province. We used all of tthe Dayak tribal community in Kaliau Village as population. The sample of informants was taken using the snowball sampling method. The qualitative method is used in this research by collecting the data, interviews, observation, and documentation of potential medicinal plants in Kaliau Village. Dayak Salako Tribal Community in Kaliau Village has utilized fifteen species of single plants and two concoctions as alternative medicines to treat certain diseases. Several plants can only utilize the leaves part, bark, pulp of fruit, and roots. However, several plants can also utilize all of the parts. Processing plants for traditional medicines is drinking, eating, or applying them to body parts.
The effect of pre-class quizzes assisted flipped classroom learning on student learning outcomes in the biochemistry course of fatty acid metabolism Safitri, Erni; Sofia, Baiq Fara Dwirani; Ningsih, Baiq Nila Sari; Savalas, Lalu Rudyat Telly
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
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.v18i6.5745

Abstract

The study aims to determine the effect of the flipped classroom learning model assisted by pre-class quizzes on student learning outcomes of the Faculty of Mathematics and Natural Sciences, University of Mataram, in the subject of biochemistry, on fatty acid metabolism. The type of experimental research used in this study was a Quasi-Experimental Design with a Post-Test Only Non-Equivalent Control Group Design. The population in this study was the sixth-semester students of the Faculty of Mathematics and Natural Sciences, Mataram University, for the 2022 academic year, totaling 60 people with a sampling technique using saturated sampling. In this research, two classes were used: the control and experimental classes. In the experimental class, namely class A, the flipped classroom learning model was treated with the help of pre-class quizzes, while the control class only used the flipped classroom model without pre-class quizzes. This study measured student learning outcomes from post-test question scores with 30 multiple-choice questions. The data analysis techniques used are normality test, homogeneity test, hypothesis test using paired sample t-test, and effect size test. Based on the results of data analysis using the normality test and homogeneity test that was carried out, the data was usually and homogeneously distributed, so hypothesis testing was carried out using the t-test and effect size test. Based on the hypothesis testing that has been carried out, there is an influence of the flipped classroom learning model assisted by pre-class quizzes on student learning outcomes in the biochemistry course on fatty acid metabolism. This can be seen from the sig value. (2-tailed) of 0.000 in the paired sample t-test, resulting in the interpretation that H0 is rejected and H1 is accepted. As for the magnitude of the effect of the flipped classroom model assisted by pre-class quizzes using the effect size calculation formula, the result was 1.33, which shows the criteria for a high effect value.
Development of nano titanium dioxide modified carbon paste electrode for determination of chloramphenicol in vaname shrimp (Litopenaeus vannamei) pond water by cyclic voltammetry Zahro, Nafisatuz; Setiarso, Pirim
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
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.v18i6.5844

Abstract

Chloramphenicol is an antibiotic that has activity against aerobic, anaerobic, and fungal bacteria and is often used in vaname shrimp farming pond water. Behind its usefulness, chloramphenicol has side effects for health, such as aplastic anemia, bone marrow suppression, stomach intestinal disorders, and optical and peripheral neuropathy. This study aims to determine the ability of carbon paste electrodes modified with nano titanium dioxide to detect chloramphenicol levels in vaname shrimp pond water by cyclic voltammetry. This research has successfully made an electrochemical sensor as a nano titanium dioxide-modified carbon paste electrode to detect chloramphenicol in vaname shrimp pond water samples. Nano titanium dioxide used as a modifier in carbon paste electrodes was characterized by XRD (X-Ray Diffraction) and FTIR (Fourier Transform Infrared), while the study of electrochemical characteristics using cyclic voltammetry method. The electrochemical sensor that has been made is a nano titanium dioxide-modified carbon paste electrode that can detect chloramphenicol in vaname shrimp pond water using the cyclic voltammetry method.
Fabrication of carbon pasta elektroda composition modified with nanobentonite and nano TiO2 for niacinamide detection sensor Anggraini Putri, Dhea; Setiarso, Pirim
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
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.v18i6.5847

Abstract

Niacinamide is the amide form of vitamin B3, which is usually analyzed for concentration using UV-Vis Spectrophotometry, HPLC, and KLT. The development of niacinamide analysis methods using cyclic voltammetry has not been widely studied. The use of working electrodes in cyclic voltammetry is usually carbon paste electrodes. However, these electrodes have disadvantages, relatively low sensitivity and slower electron transfer kinetics, so it is necessary to research working electrode modification to increase electrode sensitivity. This study aims to determine the effect of the addition of nanobentonite and nano TiO2 on carbon paste electrodes in improving electron transfer and electrode sensitivity in the analysis of niacinamide by cyclic voltammetry. Variations in electrode composition were conducted to determine the optimum composition in measuring niacinamide solution and the optimum pH in measuring niacinamide. Nanobentonite obtained from the synthesis using the sonochemical method produces an average particle size of 46.9 nm, and the composition of carbon, paraffin, nanobentonite, and nano TiO2 electrodes with a variation of 3:2:3:2 b/v has the highest current peak. The better the conductivity of the working electrode, the greater the maximum current peak produced due to the easy transfer of electrons for the reduction and oxidation reaction process. Using a buffer solution to adjust the pH of the niacinamide solution affects the analysis process, as evidenced by the IpA value at pH 7. The effect of pH variation also affects the stability of existing ions. So that the resulting current is higher, the higher the peak current value produced indicates, the more sensitive the electrode is due to high electron transfer. It maximizes the analysis of the concentration of the test solution because the measured concentration is linear with the measured current.
Antibacterial Activity Test of the Combination of Methanol Extract of Arumanis Mango Leaves (Mangifera indica L) and Taro Leaves (Colocasia esculanta L) on Escherichia coli Bacteria Causes of Diarrhea Diseases Kumalasari, Siska; Fitriyati, Laeli; Rahayu, Titi Pudji; Kiromah, Naelaz Zukhruf Wakhidatul
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.v19i1.5850

Abstract

Arumanis mango leaves (Mangifera indica L) and taro leaves (Colocasia esculanta L) are plants that have the potential to be antibacterial and can be used as an alternative to treat infectious diseases caused by bacteria. Arumanis mango leaves contain secondary metabolite compounds, including flavonoids, alkaloids, steroids, polyphenols, tannins, and saponins, and taro leaves contain secondary metabolite compounds in the form of saponins, tannins, flavonoids, formic acid, glucosides, citric acid, and several minerals. Secondary metabolite compounds that have potential as antibacterials are flavonoids and tannins. This study aims to determine the antibacterial activity of a combination of methanol extracts of arumanis mango leaves (Mangifera indica L) and taro leaves (Colocasia esculanta L) against Escherichia coli bacteria. The research was carried out starting from the plant determination and preparation of simplisia, extraction, phytochemical screening of extracts and KLT tests, and antibacterial testing using the disc paper method. The concentration series of extract combinations used are 6.25%, 12.5%, and 25%. The antibacterial test results of the combination of arumanis mango leaf extract (Mangifera indica L) and taro leaf (Colocasia esculanta L), which showed the highest inhibition zone diameter was at a concentration of 6.25% (1:1), a concentration of 12.5% (1:2). At a concentration of 25% (2:1). From the results of this study, a single extract of arumanis mango leaves and taro leaves with a concentration of 6.25%; 12.5%; 25% and a combination of extracts in a ratio of 1:1. 1:2, 2:1, which has potential antibacterial activity against Escherichia coli bacteria, so that further research can be carried out by utilizing a combination of arumanis mango leaf extracts and taro leaves and as a source of information and insight into the combination of arumanis mango leaves and taro leaves that have antibacterial properties.
The Effect of Using Ecology Modules on Communication Skills, Cognitive, and Student Attitudes Through Problem-Based Learning Ginanjar, Gigin; Rahayu, Maya; Ayuningtyas, Vidya
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.v19i1.5853

Abstract

Learning carried out in lectures requires a variety of learning resources to improve students' abilities for the better. During this time, lectures usually only use learning resources that vary little and tend to use only one source so that student learning outcomes are not maximized. This research was conducted to improve student learning outcomes, especially in communication skills and cognitive and student attitudes at Bina Bangsa University. The research method used is ADDIE development research, starting from the stages of Analysis, Design, Development, Implementation, and Evaluation. Module development is carried out by measuring its effectiveness on communication skills using observation sheets, measuring cognitive abilities with tests, and observing attitudes with observation sheets. The application of the module in learning is carried out with a quasi-experimental design. Then, the results are analyzed descriptively with the ANCOVA statistical test using the SPSS application. The results showed improved communication skills, cognitive abilities, and student attitudes. Based on statistical tests, there are differences in the achievement of learning outcomes between the control and treatment classes. In the treatment class, the application of problem-based learning modules showed improved communication, cognitive, and student attitudes. However, based on the value of the gain score, the use of problem-based teaching modules on communication skills and student attitudes is in the range of low effectiveness, while in cognitive aspects, it is in the range of moderate effectiveness. Using ecology modules with problem-based learning is important because real problem-based learning makes learning more contextual, especially in courses that use environmental problems as the main study.
Electrochemical analysis of butylated hydroxytoluene Rosyiidah, Nur Anisa; Pirim Setiarso
Jurnal Pijar Mipa Vol. 18 No. 6 (2023): November 2023
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.v18i6.5858

Abstract

Electrochemical analysis has carried out butylated hydroxytoluene (BHT) measurements. Cyclic voltammetry is used in this research as a qualitative-quantitative analysis of oxidation and reduction reaction processes, adsorption processes on electrode surfaces, and chemical electron transfer mechanisms.  This research aims to determine the optimum deposition time and scan rate in cyclic voltammetry, the BHT standard equation, the limit of detection, and the recovery percentage.  In this research, a deposition time of 25 seconds produces the highest current response of 3.89672 x 10-4 Ampere.  The scan rate is 150 mV/second, producing the highest and optimum current response of 4.24561 x 10-4 Ampere.  BHT standard equation y = (4.92784 x 10-6) x + (1.25207 x 10-4) is obtained with R2 = 0.99933. The limit of detection value is 2.69683 ppm, and the recovery percentage is 101.314%.  Therefore, this cyclic voltammetry method is suitable for analyzing BHT because it has high sensitivity.

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