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Journal of Science and Science Education (JoSSEd)

jossed
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Published by Universitas Mataram

ISSN : 27741869 EISSN : 27742105 DOI : https://doi.org/10.29303/jossed

Core Subject : Science, Education, Agriculture, Engineering,

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Neuroscience Physics

Journal of Science and Science Education (JoSSEd) is a Peer Review international journal published by Postgraduate Mataram University. It is firmly established as an authoritative voice in the world of science and science education. JoSSEd publishes scholarly papers that focus on science and science education like the teaching and learning of science in school settings ranging from early childhood to university education. It bridges the gap between research and practice, providing information, ideas, and opinion. As a truly international journal, JoSSEd welcomes contributions from any country provided that the authors explain their local contexts and demonstrate the significance of their work for a global readership.

Arjuna Subject : Umum - Umum

Articles 9 Documents

Search results for , issue "Vol. 3 No. 1 (2022): April" : 9 Documents clear

The Effect of Variations of Drilling Bolt Distances on Bending Strength of Composite Wood Beams Satia Cahya Noviadi; I Wayan Sugiartha; Jauhar Fajrin
Journal of Science and Science Education Vol. 3 No. 1 (2022): April
Publisher : Pascasarjana, Mataram University

Wood products that are currently growing rapidly in many places in the world are laminated blocks (glulam). Laminate beam has many advantages in terms of size, strength and artistic. However, this laminated beam has a few drawbacks in terms of providing tools and materials for some areas. The laminated beam itself uses an adhesive material which is relatively expensive and requires a compression tool in its implementation. Therefore, an alternative is given in the form of composite beams. Composite beams that have developed so far use shear connectors in the form of bolts, nails, and pegs as the connecting tool. Meanwhile, shear connectors using drilling bolts have never been done. Therefore, based on this, it is necessary to research composite wood beams with an alternative, namely using drilling bolts as shear connectors in order to obtain the effect of variations in the distance of drilling bolts on the flexural strength of composite beams. The results of the flexural strength test obtained the strength of the composite beam with shear connectors with the largest distance of 3.125, followed by beams with shear connecting distances of 6.25 cm, 12.5 cm and 25 cm. This shows that the closer the shear connecting distance, the greater the strength obtained, with the percentage increase in variation of 31.5%, 38.737% and 46.072%, respectively.

Student Responses related to Face-to-Face Learning Policies to Overcome Learning Loss Condition Dedi Riyan Rizaldi; Ziadatul Fatimah; Susilawati Susilawati; Muh. Makhrus
Journal of Science and Science Education Vol. 3 No. 1 (2022): April
Publisher : Pascasarjana, Mataram University

This study aims to describe student responses and learning outcomes related to the re-implementation of face-to-face learning policies to overcome learning loss conditions. The type of research used is descriptive qualitative research with field research methods, namely collecting data directly from the research site. The sample in this study was 30 students at Madrasah Aliyah Plus Nurul Islam Sekarbela who represented each department (Science and Religion) from grades 10 to 12. The research data obtained consisted of two forms, namely student response data (using a questionnaire) and result from data student learning (using the student's final grade score average). Based on the problems and discussion, it can be seen that the student's response to the re-enactment of face-to-face learning in class is quite good when compared to using an online learning system (learning from home). This is also supported by student learning outcomes using the face-to-face learning system in madrasas that have a higher final average score than during the online learning process.

The Analysis of Alcohol Content in Cassava (Tape) Fermentation Process Sherly Nur Laili; Sudarti Sudarti; Trapsilo Prihandono
Journal of Science and Science Education Vol. 3 No. 1 (2022): April
Publisher : Pascasarjana, Mataram University

The fermentation process in making cassava tape (Manihot esulenta) worked on the alcohol content. The alcohol content differed during the fermentation process. The objective of this research was analyzing the alcohol content produced in the fermentation process of cassava tape (Manihot esculenta). The data interpretation method was experimented in this research. Three samples of tape were treated with ELF magnetic field exposure involving the intensity of 200µT with 15-minute exposure and the intensity of 300µT with 15-minute exposure. The tools used in this research were a thermometer to measure room temperature and a portable alcohol brix ATC meter refractometer to measure alcohol content. The results showed the average alcohol content on the first day was 8-10%; it increased on the following day by 25% and on the third day, it reached 36-38%. Thus, the longer the fermentation process, the higher the alcohol content would be; it can be concluded that the samples treated with ELF magnetic field at the intensity of 300uT obtained the highest alcohol content.

Analysis of Exposure to an Extremely Low Frequency (ELF) 700 μT and 1000 μT Magnetic Fields in Tuna Meat (Euthynnus Affinis C) Sudarti Sudarti; Karina Laksmiari; Elok Permatasari; Farida Wahyu Ningtyas
Journal of Science and Science Education Vol. 3 No. 1 (2022): April
Publisher : Pascasarjana, Mataram University

The resistance of tuna meat in a room temperature classed quietly short as it takes approximately 6 hours has encountered a process of decay. Consequently, the technology is needed to increase its durability. This study aims to analyze the exposure to Extremely Low Frequency (ELF) 700 μT and 1000 μT magnetic fields in tuna meat (Euthynnus Affinis C). The sample was 3300 grams of fresh tuna meat, which had been stored in the refrigerator for 4 hours as it was divided into 66 plastic wrappers (50grams), then grouped into three groups. They were the control group (K), the ELF magnetic fields intensity 700 μT (E700) group, and the ELF magnetic fields ELF intensity 1000 μT (E1000) group with variations in an exposure time of 15 minutes, 30 minutes, and 45 minutes. Measurement of pH and assessment of physical condition was carried out on the 5th, 10th, and 15th hours after being exposed to the ELF magnetic fields. The results highlighted the pH value in all groups exposed to the ELF magnetic fields was significantly lower (p < 0.05) than the control group. Meanwhile, the physical condition of tuna exposed to the ELF magnetic fields appeared to be better than the control until the 15th hour of storage. Conclusion: Exposure to an ELF magnetic field with an intensity of 1000 µT for 15 minutes has the potential to increase the physical resistance of tuna until the 15th hour after being exposed to an ELF magnetic field

Ethnopharmacological study of the Selected Tribal Medicinal Plants of the Tboli People in Lake Sebu, South Cotabato Alvin Q. Larida; Johnryk B. Soldevilla; Christopher John B. Ursabia; Dominique Rose C. Blanco
Journal of Science and Science Education Vol. 3 No. 1 (2022): April
Publisher : Pascasarjana, Mataram University

Around 80% of people around the world have practiced the use of ethnopharmacological medicine. Tboli tribe of Lake Sebu, South Cotabato, Philippines recognized medicinal plants for healing. There were two identified plants by the Tboli people, the Bulok bukay (Stachytarpheta jamaicensis) and Kluonmabu (Ageratum conyzoides L.) as a potential medicine for wound healing. The plants underwent antimicrobial analysis, phytochemical screening, and functional groups detection through FTIR. The zone of inhibition for Bulok bukay showed antimicrobial potential in all concentrations. Kluonmabu observed as not as effective as the other plant against S. aureus. With the p = 0.0641 at 0.05 level of significance, Bulok bukay showed to be effective against bacteria and comparable with a commercial antibiotic. Furthermore, phytochemical properties for both plants have been observed with more components of alkaloids and terpenoids in Bulok bukay. FTIR confirmed as well that two plants have the potential presence of functional groups against bacteria

Assessment of Duration and Frequency of Drought by Percent Normal Precipitation Index (PNPI) for Lombok Island Humairo Saidah; Muh. Bagus Budianto; I Wayan Yasa; Syamsul Hidayat; I Dewa Gede Jaya Negara; Heri Sulistiyono
Journal of Science and Science Education Vol. 3 No. 1 (2022): April
Publisher : Pascasarjana, Mataram University

Meteorological drought is a climatic condition categorized by a scarcity of rainfall. Understanding the drought characteristics is a significant step appointed uncertain climate conditions due to current global climate change. This study aims to assess the duration and frequency of drought using the Normal Precipitation Index (PNPI) method to identify drought characteristics in the study area. The PNPI revealed a spatial variation in percent value monthly rainfall to average rainfall across the island of Lombok that prolonged and severe droughts have occurred in entire study areas with varying duration and frequency. PNPI method in analyzing drought events in the island of Lombok showed that Sopak is the driest area and Sekotong is the wettest one

Fresh Water Exploration in Housing Estate with Schlumberger Electrodes Geoelectric Methods Muhammad Zuhdi; Syamsuddin Syamsuddin; Bakti Sukrisna; Agus Wachid Habiburrohman
Journal of Science and Science Education Vol. 3 No. 1 (2022): April
Publisher : Pascasarjana, Mataram University

Geoelectricity is one of geophysical methods performed by injecting electric current into the earths. This research objected to map aquifers using geoelectric with Schlumberger electrode configuration consisting of 4 sounding points. The results are then processed with IP2WIN software which yields a real resistivity map as a function of depth. The correlation of sounding points produces three-dimensional real resistivity maps. The results of this study located at a housing estate, Mataram, West Nusa Tenggara, consists of 4 sounding points show that the aquifer is have huge amount of fresh water The aquifer layer in this area is a free aquifer. At point PA1 the depth of the aquifer starts from a depth of 81.4 – 125 meters; PA2 point at a depth of 80 – 124 meters; PA3 point at a depth of 91.8 – 118 meters; and Point PA4 at a depth of 47.4 – 113 meters

The Effect of Educational Games on the Level of Motivation in Science of Grade IV Students in Angel Villarica Central School Farrah Jean Calatrava; Kaye Jay Lacsamana; John Rex Revilla; Jovenil Bacatan
Journal of Science and Science Education Vol. 3 No. 1 (2022): April
Publisher : Pascasarjana, Mataram University

The concern of this study is to determine The Effect of Educational Games on the Level of Motivation of Grade 4 Students in Angel Villarica Central Elementary School. A quantitative research design employing an experimental method was used in the study. The essential data were gathered from a total number of seventy-three (73) respondents, 36 students from the control group and 37 students from the experimental group, with the aid of a questionnaire validated by a panel of experts. The statistical tools used in this study were Average Weighted Mean and t-test for Independent Sample Means. The study proved that there was no significant difference between the mean gain scores of the experimental and control groups. It means that the use of educational games has no significant effect on the level of motivation in science. However, educational games can be considered as an alternative method in delivering the Science lesson. It was being recommended in the study to conduct a similar study in the future to confirm that educational games have no effect on the level of motivation and involve a wider scope in the conduct of the study

Practicality of Problem-Based Physics Learning Tools with Video Assistance to Improve Problem-Solving Ability of Students Susilawati Susilawati; Fiki Rahmana; Kosim Kosim; Lalu Muliyadi
Journal of Science and Science Education Vol. 3 No. 1 (2022): April
Publisher : Pascasarjana, Mataram University

This study aims to produce problem-based physics learning tools with the help of videos that practically improve the problem solving abilities of students. The research design used is a 4D model consisting of define, design, develop and disseminate. The learning tools developed are syllabus, lesson plan, student worksheets, videos, and problem solving ability questions. The finished learning tools were then tested in a limited way in class XI MIPA 7 SMAN 1 Mataram to find out the practicality of these devices. The results showed that the device, on average, received a positive response from students and teachers. This can be seen from the responses "agree" and "strongly agree" for each component of the questionnaire given by students and teachers. Based on these data, it can be concluded that problem-based physics learning tools with the help of videos, practically improve the problem-solving abilities of students

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Hamidi

Contact Email
hamidi@unram.ac.id

Phone
+6281936732708

Journal Mail Official
editor.jossed@gmail.com

Editorial Address
Jl. Pendidikan No 37 Mataram

Location
Kota mataram,

Nusa tenggara barat

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Hamidi

Contact Email hamidi@unram.ac.id

Phone +6281936732708

Journal Mail Official editor.jossed@gmail.com

Editorial Address Jl. Pendidikan No 37 Mataram

Location Kota mataram, Nusa tenggara barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Hamidi

Contact Email
hamidi@unram.ac.id

Phone
+6281936732708

Journal Mail Official
editor.jossed@gmail.com

Editorial Address
Jl. Pendidikan No 37 Mataram

Location
Kota mataram,

Nusa tenggara barat

INDONESIA