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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 1,179 Documents
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Tobacco extract-based biopesticide from cigarette butt waste for corn plants (Zea mays L.) Nurhidayah Nurhidayah; Taufik Abdullah; Hijriati Sholehah; Fairuz Safhira
Jurnal Pijar Mipa Vol. 17 No. 6 (2022): November 2022
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.v17i6.4256

Abstract

Cigarette butt waste can be used for biopesticides for environmentally friendly agricultural activities. Biopesticides cigarette can be produced by conducting a maceration extraction test using polar, non-polar, and semi-polar compounds and conducting a Mass Spectrometer Chromatography (GC-MS) test. This study aims to determine the effectiveness of bio-pesticide based on tobacco extract from cigarette butt waste for maize (Zea mays L.)". The highest yield value was the ethanol sample of 1.208%, compared to the N-hexane sample of 0.25% and the DCM sample of 0.6%. For the comparison of solvents used were 500 ml of ethanol, 250 ml of N-hexane, and 250 ml for DCM as well. After conducting the GC-MS test, the compounds obtained are alkaloid compounds, phenolic compounds, sesquiterpenoid compounds, and terpenoid compounds, each of which has benefits as a pest control or deterrent to plants. For the effectiveness test results on Corn (Zea mays L.), there was no intensity of pest attack on the ethanol sample, N-hexane sample, and DCM sample. In contrast, there was a pest attack intensity of 0.3% for the control sample. Therefore, the Biopesticides studied are similar to synthetic pesticides because they can eradicate pests and make growth effective faster.
Effect of the addition of inhibitors of kirinyuh leaf (Chromolaena Odorata) in methanol extract on corrosion rate of ASTM 36 steel Fauzi Widyawati; Syamsul Hidayat; Syamsul Bahtiar; Musbihin Musbihin
Jurnal Pijar Mipa Vol. 17 No. 6 (2022): November 2022
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.v17i6.4276

Abstract

Kirinyuh leaves (Chromolaena Odorata) contain alkaloids, saponins, flavonoids, phenols, and tannins with the potential as a natural inhibitor that can be used to inhibit the rate of corrosion. Kirinyuh leaf extract inhibitors were added at various concentrations of 100 ppm, 200 ppm, 300 ppm, 400 ppm, and 500 ppm, which were sprayed onto the sample surface before being soaked for seven days. Calculation of the corrosion rate using the method of weight loss (weight loss). The results showed that kirinyuh leaf extract effectively inhibited the corrosion rate. The smallest corrosion rate value was found in the sample with the addition of 400 ppm inhibitor concentration, which was 2.053 ppm. Meanwhile, an efficiency inhibitor was also found in the same concentration of inhibitor that is equal to 87%.
Analysis of well water feasibility as water consumption in Boarding House Area, Jember District Indonesia Wanda Febrianty; Sudarti Sudarti
Jurnal Pijar Mipa Vol. 17 No. 6 (2022): November 2022
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.v17i6.4289

Abstract

Currently, as many as 45% of Indonesian people use well water to meet their daily needs. However, problems with the use of well water occur due to increasing population growth, resulting in increased water pollution. Waste generated by human activities can seep into the ground and contaminate well water. This research was conducted to determine the feasibility of well water as consumption water in the Kos area of ​​Jember Regency. The method used in this research is a descriptive observation method. The study used seven samples of well water originating from the Kos area of ​​Jember Regency and 1 sample of mineral water as a comparison. Samples of well mineral water were tested using physical, chemical, and biological tests. Physical tests were carried out on color, odor, temperature, and total dissolved solids (TDS). The chemical test was carried out in the form of a pH test. Biological tests were carried out by observing changes in color and odor due to bacteria after the samples were left for ten days. The results showed that three water samples did not meet the physics test, namely sample 4, sample 6, and sample 8. One well water sample did not meet the chemical test, namely sample 4. Five water samples did not meet the biological test: sample 2, sample 4, sample 6, sample 7, and sample 8.
Bacteriological quality test of air in the classrooms of Darur Abror Foundation School West Lombok Regency in 2022 Nurhidayatullah Nurhidayatullah; Azwaruddin Azwaruddin; Liza Mimhalina
Jurnal Pijar Mipa Vol. 17 No. 6 (2022): November 2022
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.v17i6.4294

Abstract

This study aims to determine the air quality in the classroom. The study showed the quality of air bacteria in the classrooms at the Darur Abror Foundation School (Sudak Gardens Hamlet, Terong Tawah Village, Labuapi District, West Nusa Tenggara, Indonesia) exceeded the predetermined limit on the number of germs in the room. According to Minister of Health Regulation No. 1405/MENKES/SKXI/2002, the germ number is 200-500 CFU/m3. The number of bacteria in the classroom is 2,699 CFU/m3. The most abundant characteristic according to the size of the bacteria is pinpoint. The shape of bacteria based on the number is circular, and the color of most bacteria is white.
Analysis of students spatial ability in solving problems of flat side space subjects based on van hieles level of thinking Iqra Matul Aulia; Sudi Prayitno; Ulfa Lu luilmaknun; Nyoman Sridana
Jurnal Pijar Mipa Vol. 18 No. 1 (2023): January 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.v18i1.3186

Abstract

This study aims to describe students' spatial abilities in solving geometrical problems of flat-sided shapes based on van Hiele's level of thinking in grade eight junior high school of SMP Negeri 1 Aikmel in the academic year 2020/2021. This type of research is descriptive qualitative. The research subjects were taken by purposive sampling, namely nine students of class VIII consisting of 3 students, each with van Hiele thinking level 0 (visualization), level 1 (analysis), and level 2 (abstraction). Subjects were selected based on having received material on plane shapes and had taken the van Hiele geometry test. Data collection techniques were van Hiele's geometry ability test, spatial ability test, and interviews. Data validity uses Aiken and triangulation methods. The results of this study indicate that: (1) subjects with level 2 (abstraction) have spatial abilities consisting of visualization, spatial orientation, and spatial rotation. (2) subjects with level 1 (analysis) have spatial abilities consisting of spatial orientation. (3) subjects with level 0 (visualization) do not have spatial abilities.
Butterfly community (Lepidoptera) at Joben Tourism Park (Joben Eco Park) Regency of East Lombok Rahmatul Aulani Yuniartin; Mohammad Liwa Ilhamdi; Gito Hadiprayitno
Jurnal Pijar Mipa Vol. 18 No. 1 (2023): January 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.v18i1.3780

Abstract

Joben Eco Park is located in the ​​Joben Resort area, Mount Rinjani National Park Center Pesanggarahan Village, Montong Gading Subdistrict, East Lombok Regency. This research is an exploratory, descriptive study that aims to discover the butterfly community in Joben Eco Park, East Lombok Regency. Data collection used a purposive survey method whit a sweeping technique following two predetermined observation lines. The research results were obtained from 375 individual butterflies covering 29 species, with 11 genera and 4 families. Analysis of the butterfly diversity index using the Shannon-Winner formula obtained a butterfly species diversity index value in Joben Eco Park in general of 3.033, which falls into the high category. Analysis of the dominance index using a formula from Simpson obtained a value of 0.06.
The use of multimedia interactive to improve students science literacy in the new normal era Ainus Shofawati; Wahono Widodo; Dhita Ayu Permata Sari
Jurnal Pijar Mipa Vol. 18 No. 1 (2023): January 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.v18i1.3832

Abstract

This study aims to describe the influence of interactive multimedia on students' science literacy in the new normal era and student responses after learning using interactive multimedia on energy flow materials. The type of research used is pre-experimental design research through one group pretest-postest design. The subjects in this study were 31 students of class VIIC in Muhammadiyah Junior High School 2 Taman Sidoarjo, even semester of the 2021/2022 academic year. Data collected by techniques use observation, tests, and questionnaires. Research instruments include observation sheets for the implementation of learning, science literacy tests, and student response questionnaire sheets. The data were analyzed descriptively using the N-Gain test, the implementation observation sheet, and the response questionnaire. The results showed that the implementation of learning using interactive multimedia on energy flow materials got the criteria for being carried out properly. Students' science literacy skills increased from an average pretest score of 38.5 to 81 on the posttest, with an average N-Gain score of 0.69, categorized as moderate. The learning process and the use of interactive multimedia applications on energy flow materials were also responded to positively by students. Based on the description above, learning using interactive multimedia on energy flow materials can improve students' science literacy skills in the new normal era.
Identification of traditional science-based games to improve early childhood development in Central Lombok District Baik Nilawati Astini; Ika Rachmayani; Nurhasanah Nurhasanah; Ni Luh Tania Putri Wijaya
Jurnal Pijar Mipa Vol. 18 No. 1 (2023): January 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.v18i1.3919

Abstract

Giving educational stimulation in early childhood can be given through games. Traditional science-based games make an important contribution to supporting children's development. This study aimed to identify traditional games in Central Lombok Regency that can be played in early childhood and how to play traditional games to improve children's development. This research is survey research conducted at Central Lombok Regency. This research uses observation data collection methods, interviews, and documentation. The subjects of this study were six community leaders or cultural leaders and five teachers. Data analysis used descriptive qualitative analysis. The results showed that there were 28 identified traditional games. After being reviewed and verified based on the criteria for tools and materials used: playground, gender, age of players, number of players, and how to play, 23 traditional games were obtained:  fort, bekel, ciwe, cepun, do mi gift, merchandise, long dragon snakes, marbles, playing rope, pese-pese'an, temeong-meong, gobak sodor, trumpets, cingkaleng, manuk brackets, splashing, temong-meong, school stones, playing moon, cupring, segem, playing war and coffee. Traditional games use tools, do not use tools, and use poetry/songs. How to play traditional games each game has steps similar to each others. Based on these criteria, traditional games can indirectly improve child development such as cognitive, language, social-emotional, religious and moral values, physical-motor, and artistic.
Determination of flavonoid levels of Macaranga gigantea and its activity as antioxidants Samsul Hadi; Dian Ekowati; Amalia Khairunnisa
Jurnal Pijar Mipa Vol. 18 No. 1 (2023): January 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.v18i1.4054

Abstract

One of the ways to prevent generative diseases is by using natural antioxidant compounds. The flavonoid compounds in the flower parts of M. gigantea have a role in antioxidants. Thus the study aimed to test the antioxidant activity and flavonoid levels of M. gigantea flowers. The antioxidant test was carried out by UV-vis spectrophotometry using 2,2-diphenyl-1-picrylhydrazyl and flavonoid assay using 10% aluminum chloride and potassium acetate, both tests using quercetin as a comparison. The results of this test obtained IC50 antioxidants 145,725 ± 3.858 ppm, and flavonoids were 1,860 ± 0.007% w/w eq quercetin. The conclusion from the experiments that have been carried out is that M. gigantea flowers have moderate antioxidant abilities.
Cytotoxicity activity of ethanol extract of mentangor stem skin (Calophyllum rufigemmatum) against breast cancer cells MCF-7 in vitro: Chemistry Widia Widia; Eresti Ependi; Addela Amelia; Candra Candra; Occa Roanisca
Jurnal Pijar Mipa Vol. 18 No. 1 (2023): January 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.v18i1.4113

Abstract

Cancer is one of the non-communicable diseases that causes the most death in Indonesia. In a study conducted by researchers from Northwestern University on 686 breast cancer patients, 36% of women chose to stop their treatment because they could not tolerate the side effects of the drug. The patient's side effects were joint pain, hot flashes, increased weight gain, and nausea. Mentangor plant (Calophyllum rufigemmatum) is a plant that grows a lot in Bangka Belitung and has been used by the people of Bangka Belitung as a traditional medicine to treat skin diseases. Research on the bark of the mentangor stem from Bangka Belitung has never been carried out regarding its phytochemical content and potential as an anticancer breast. For this reason, it is necessary to know breast cancer's pharmacological effects and phytochemicals on Mentangor Bangka Belitung's stem bark. Phytochemical identification was carried out qualitatively by observing changes in the test sample. Based on the results of phytochemical screening, several reactions showed that each test of the ethanol extract of the stem bark of Mentangor contained tannins, phenolics, flavonoids, and alkaloids. The measurement results of the IC50 value of inhibition of the proliferation ethanol extract with a diameter of 1 cm, 7 cm, and 17 cm against MCF-7 breast cancer cells were 326,195 g/mL, respectively; 186.178 g/mL; and 178.090 g/mL.

Page 60 of 118 | Total Record : 1179

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