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Jurnal Pijar MIPA

JPM
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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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Study of reverse planting techniques on rice as physical science learning materials Hestiana Hestiana; Heru Kuswanto; Aisha Azalia; Desi Ramadhanti
Jurnal Pijar Mipa Vol. 16 No. 4 (2021): September 2021
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

The spread of COVID-19 makes learning at every level of the education unit conducted from home online or distance learning. However, this is not an easy thing for teachers to do. Teachers are required to innovate in delivering materials so that students can easily understand and learn actively. Indonesia is an agricultural country where most of the population has a livelihood as farmers. As a form of contextual learning and alternative distance learning during the COVID-19 pandemic, teachers can take advantage of rice farming activities in Indonesia, known as rice Tandur (reverse planting), as physical science teaching materials. Therefore, this research aims to explore the concept of physical science contained in rice Tandur activities to be used for physical science learning. This research is descriptive research to describe the idea of physical science in rice planting activities. Data collection was conducted by documentation of rice planting activities as well as literature studies. After the documentation is collected, the analysis uses Kinovea software to find out the center of gravity (COG) and the corners formed by the limbs. Based on the results of analysis and literature studies, the concept of physics was obtained in the form of a third-class lever arm that can be used for science materials in high school classes. In addition, there is a center of gravity and torque concept in the torso's movement, which can be used as a material for learning physics in high school.

Phytochemical Screening and Antibacterial Potency of Jeruk Kunci Fruit Waste (Citrus x microcarpa Bunge) Extract Against Propionibacterium acnes Occa Roanisca; Rani Rani; Robby Gus Mahardika
Jurnal Pijar Mipa Vol. 16 No. 3 (2021): Juni 2021
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

Pertumbuhan bakteri jerawat dapat diatasi dengan menggunakan senyawa antibakteri, tanaman yang berpotensi untuk dikembangkan sebagai antibakteri jerawat adalah Citrus x microcarpa Bunge (jeruk kunci). BerdasarkanÃÂ kajianÃÂ literatur, genus Citrus mengandung steroid, flavonoid, terpenoid, tanin, dan saponin dengan bioaktivitas sebagai antioksidan dan antibakteri. Penelitian ini bertujuan untuk mengetahui kandungan metabolit sekunder dan aktivitas antibakteri ekstrak limbah buah jeruk kunci terhadap Propionibacterium acnes. Pada penelitian ini ekstraksi menggunakan metode maserasi dengan pelarut etanol. Pengujian fitokimia dilakukan secara kualitatif dan uji antibakteri menggunakan metode difusi cakram. Hasil pengujian fitokimia mengandung senyawa metabolit sekunder, seperti flavonoid, tanin, terpenoid, dan steroid. Berdasarkan data pengujian antibakteri ekstrak limbah buah jeruk kunci didapatkan bahwa kekuatanÃÂ antibakteri ekstrak terhadap P. acnes tergolong kuat. Hal tersebut dapat disimpulkan bahwa ekstrak limbah buah jeruk kunci berpotensi untuk dikembangkan menjadi agen antibakteri.

Anacardic Acid Isolation from Cashew Seed Skin Aliefman Hakim; Jamaluddin Jamaluddin; I Nyoman Loka; Saprizal Hadisaputra; Ayu Rizki Mujiyanti
Jurnal Pijar Mipa Vol. 16 No. 3 (2021): Juni 2021
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

Research on the isolation of anacardic acid compounds from cashew nut shells has been carried out. This study aims to develop a method of isolating anacardic acid compounds from cashew nut shells in an easier way but still produces pure compounds. In this study, isolation and identification of anacardic acid compounds contained in CNSL were carried out. The results of anacardic acid isolation contained in CNSL form a thick brown extract with a characteristic dark odor. Anacardic acid was isolated using a maceration method using methanol as a solvent. The results of the isolation of anacardic acid compounds were then tested for purity using a thin layer chromatography test (TLC) using an eluent or a mobile phase of methanol: chloroform. Furthermore, anacardic acid compounds were identified using IR spectroscopy and UV-vis spectroscopy. This identification was carried out to prove that the compound obtained was indeed an anacardic acid compound. The identification results found that the compound isolated in this study was indeed an anacardic acid compound. It can be compared with the structure of existing anacardic acid compounds.

Study of Nickel Leaching Using Sulfuric Acid and Phosphoric Acid on The Selectivity Nickel Ore Syamsul Hidayat; Sri Yulianti; Dian Anggreini; Syamsul Bahtiar
Jurnal Pijar Mipa Vol. 16 No. 3 (2021): Juni 2021
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

Study of nickel leaching using sulfuric acid and phosphoric acid on the selectivity of low-grade laterite nickel ore under atmospheric conditions has been successfully carried out. In this study, the laterite nickel leaching process was carried out by varying the solution concentration and operating time. The concentrations of sulfuric acid and phosphoric acid solutions were varied at 5 M and 6 M concentrations, while the operating time was varied at 4 hours and 6 hours. For other operating conditions, it is kept constant with an operating temperature of 90 Ã¢âÆ, pulp density 15% w / v, particle size Ã¢â°Â¤ 200 mesh. After that, the analysis stage was carried out using an atomic absorption spectroscopy (AAS) tool to determine the nickel content in the sample. The results showed that the highest nickel recovery was obtained at the concentration of 5 M sulfuric acid solution of 2.60% and 5 M phosphoric acid of 2.59% with the optimum operating time at 4 hours of operating time.

Validating metacognitive awareness inventory (MAI) in chemistry learning for senior high school: A rasch model analysis Jono Irawan; Samsul Hadi; Zulandri Zulandri; Jamaluddin Jamaluddin; Abdul Syukur; Saprizal Hadisaputra
Jurnal Pijar Mipa Vol. 16 No. 4 (2021): September 2021
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

This study aims to validate metacognitive instruments, which include eight indicators of declarative knowledge, procedural knowledge, conditional knowledge, planning, information management, monitoring, debugging, and evaluation. The validation method uses Rasch modeling (Item Response Theory), namely Map analysis Wright (Person-item Map), Measure DIFF, Validity (Fit Statistics for The Draft Questionnaire), Reliability Cronbach Alpha (Summary statistics). Results map analysis wright shows the distribution of items and the power of discrimination are categorized as good with the logit value around 1.0. The curve Measure DIFF and the probability value indicate that the thing does not have an element of distinguishing gender characteristics if the probability value is above 0.05. The assessment instrument's validation showed an infit-outfit of 0.5 MNSQ 1.5, an infit-outfit value of 0.5 ZSTD 1.5, and a value of 0.4 PTMEA 0.85. Furthermore, the reliability of the instrument category is excellent, with a Cronbach alpha of 0.94. In conclusion, the MAI instrument in chemistry learning was feasible to measure the metacognitive abilities of high school students.

In vitro concentration optimization of ethanol extract from Makasar fruit seeds (Brucea javanica L. Merr) as an anti-inflammatory agent Diva Almira; Windah Anugrah Subaidah; Agus Dwi Ananto; Rizqa Fersiyana Deccati; Handa Muliasari
Jurnal Pijar Mipa Vol. 16 No. 5 (2021): November 2021
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

Anti-inflammatory medications are necessary to treat excessive inflammation reactions due to injury, infection, or irritation. The emergence of several adverse effects associated with synthetic anti-inflammatory drugs has prompted the continued use of anti-inflammatory agents derived from natural products with low side effects and a high therapeutic effect. While it is well established that the seeds of the Makassar fruit (Brucea javanica (L.) Merr.) ÃÂ have anti-inflammatory activity, the optimal concentration of Makasar fruit seed extract for anti-inflammatory activity is unknown. This study aims to determine the optimal Makassar fruit seed extract concentration as an in vitro anti-inflammatory. The seeds of the Makasar fruit were extracted using the sonication method (3 x 35 minutes) in 96% ethanol and then concentrated using a rotary evaporator. The secondary metabolites of Makasar fruit seed extract were then identified in the test tubes, and the anti-inflammatory activity was determined using the protein denaturation inhibition method. The results indicated that the extract produced had a yield of 10.03%. The Makassar fruit seed extract contains secondary metabolites of phenolics, flavonoids, and terpenoids. Makasar fruit seed extract exhibited the optimum anti-inflammatory activity at a concentration of 1%, with a 55.47%ÃÂ inhibition of protein denaturation.

Analysis of colony development of Trigona sp. in Kawasan Rumah Pangan Lestari (KRPL) Central Lombok Izza Melati Sukma; Syamsul Bahri; Karnan Karnan
Jurnal Pijar Mipa Vol. 16 No. 5 (2021): November 2021
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

The Kawasan Rumah Pangan Lestari (KRPL) or Sustainable Food House Area integrated with Trigona sp. bee cultivation can be an alternative livelihood to improve the community's economy. This study aims at analyzing the development of bee colonies in KRPL in terms of the number of pollen pots and honey pots produced. The type of this research is descriptive qualitative. The study was conducted from October to November 2020. The samples used were 14 colonies, categorized as strong colonies, medium colonies and weak colonies. The increase in the number of empty pots, honey pots and pollen pots were observed every three days. Environmental factors such as temperature, humidity and light intensity, and the activity of the Trigona bees were also observed. The results showed that the average temperature at KRPL was 29.80 ÃÂ°C, with an average humidity of 69.62% and a light intensity of 22610 lux. Most of the increase in the highest total number of pots occurred in strong colonies. The number of empty pots, honey pots and pollen pots increased on different days. In the last week of the observation, most of the colonies did not increase in the number of pots. Development of Trigona sp. bee colonies in KRPL is considered slow even though the environmental conditions there are normal. Cultivation of Trigona sp. in KRPL should use strong colonies rather than medium and weak colonies.

The effect of implementation of animated video on online learning during the covid-19 pandemic on students science learning outcomes Zulkifli Adji Busdayu; I Putu Artayasa; Kusmiyati Kusmiyati
Jurnal Pijar Mipa Vol. 16 No. 4 (2021): September 2021
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

This study aims to determine the effect of implementing animated video on online learning during the COVID-19 pandemic on students' science learning outcomes in class VIII of SMP Negeri 3 Mataram. This research is a Quasi Experiment with Posttest-Only Control Group design. The research sample was class VIII students at SMP Negeri 3 Mataram consisting of 20 students for the control class and 20 students for the experimental class. The research data was obtained from the learning outcomes test (posttest score) on the respiratory system learning material. Data analysis in this study used the t-test with two independent samples. The results of data analysis showed that there were differences in the posttest mean scores between students who used animated video in the experimental class and students who used conventional learning in the control class. The average posttest value in the experimental class is 68.25, while the posttest average value in the control class is 53. The significance value of the two independent sample t-test is 0.009, meaning that the significance value is smaller than 0.05 (p- value < 0.05), so Ho is rejected. The conclusion of the study is that there is an effect of implementing animated video in online learning during the COVID-19 pandemic on the science learning outcomes of class VIII students at SMP Negeri 3 Mataram. Animated video have a positive effect on student learning outcomes

E-module innovation as a learning solution for chemistry course during the pandemic based on problem-based learning Devi Ayu Septiani; Anak Agung Ayu Trisna Handayani; Hermansyah Hermansyah; Abdul Syukur; Jamaluddin Jamaluddin
Jurnal Pijar Mipa Vol. 16 No. 4 (2021): September 2021
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

Chemistry e-modules based on Problem-Based Learning (PBL) are teaching materials based on electronic learning models or e-learning as a solution during the Covid-19 pandemic for students to learn independently. The purpose of this study is to assess PBL-based academic e-modules from the aspect of validity and feasibility in achieving its learning objectives. The approach used is development research according to the Thiagarajan model. The results showed that at the define stage, an analysis was conducted on the Curriculum 13 (K13) module of the Ministry of Education and Culture (Kemendikbud) with the material Ã¢â¬Åchemical bondingÃ¢â¬Â of Grade X at SMAN 3 Lembar.ÃÂ Furthermore, a module designed using an electronic display integrated with the PBL model was done at the design stage. Meanwhile, the expert validation result obtained an average of 0.86, categorized as valid and feasible criteria at the development stage. The result of studentsÃ¢â¬â¢ responses obtained 72.73% (good criteria), and the result of the chemistry teachersÃ¢â¬â¢ responses obtained 88.06% (very good criteria). The PBL-based Chemistry e-module on chemical bonding material is feasible as a Chemistry learning solution for Class X of SMAN 3 Lembar.

Innovation of learning methods during the covid-19 pandemic at junior high school in Mataram City and West Lombok Regency Fidiani Fidiantara; Ayudya Lestari; Norma Juniati; Abdul Syukur; Jamaluddin Jamaluddin
Jurnal Pijar Mipa Vol. 16 No. 4 (2021): September 2021
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

Learning innovation is a solution to achieve learning mastery, especially during the covid-19 pandemic. This study aims to describe and assess models of learning innovation methods that are relevant to changes in learning models during the covid-19 pandemic. The method used in this research is descriptive method and the sampling technique is simple random sampling. Meanwhile, the data collection techniques used documentation studies and interviews. Data analysis in this study was descriptive statistics andtest one-way anova using software spssversion 17.0. The results showed that: 1) the innovation of learning methods during the covid-19 pandemic with blended learning showed a sig.> 0.05 value, namely 0.428 at junior high school mataram city and 0.442 at junior high school West Lombok Regency , which means there is no significant difference in the implementation of the learning method. Blended learning during the covid-19 pandemic; 2) teacher perceptions based on 5 indicators, namely learning methods, innovation in the learning process, use of technology, lesson planning, and teacher support capacity indicate that science teachers at junior high school mataram city and west lombok regency have perceptions of 87.5% and 75.0% with good category; 3) students' perceptions based on 5 indicators, namely the effectiveness of the methods used, the use of technology, learning activities, learning motivation, and the carrying capacity of facilities and infrastructure indicate that students at junior high school mataram city have a perception of 90% with a good category and west lombok regency of 72.5% with good enough category. The conclusion of this study is that learning innovation or a combination of methods through online learning methods with blended learning during the covid-19 pandemic is a solution to achieve student learning mastery.

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Saprizal Hadisaputra

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rizal@unram.ac.id

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Univesitas Mataram. Jalan Majapahit No 62 Mataram, Lombok, NTB. 83125. Indonesia

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Nusa tenggara barat

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Saprizal Hadisaputra

Contact Email rizal@unram.ac.id

Phone +6287738066422

Journal Mail Official pijarmipa@unram.ac.id

Editorial Address Univesitas Mataram. Jalan Majapahit No 62 Mataram, Lombok, NTB. 83125. Indonesia

Location Kota mataram, Nusa tenggara barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Saprizal Hadisaputra

Contact Email
rizal@unram.ac.id

Phone
+6287738066422

Journal Mail Official
pijarmipa@unram.ac.id

Editorial Address
Univesitas Mataram. Jalan Majapahit No 62 Mataram, Lombok, NTB. 83125. Indonesia

Location
Kota mataram,

Nusa tenggara barat

INDONESIA