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All Journal INDONESIAN JOURNAL OF APPLIED PHYSICS Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat JISTech (Journal of Islamic Science and Technology) Fisitek : Jurnal Ilmu Fisika dan Teknologi Journal of Technomaterial Physics International Conference on Sciences Development and Technology Metalurgi

Maghfirah, Awan

Faculty Of Mathematics And Natural Sciences, University Of North Sumatra

Author-ID : 1583338

Religion Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

Published : 14 Documents Claim Missing Document

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Physical Properties of Polymer Concrete Utilizing Pahae Natural Zeolite, Corn Husk Fiber, and Polyurethane Resin Adhesives Maghfirah, Awan; Zega, Adelina Febriyanti
Journal of Technomaterial Physics Vol. 6 No. 1 (2024): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v6i1.12412

This study aimed to determine the optimum composition in the manufacture of polymer concrete using Pahae natural zeolite, corn husk fiber, and polyurethane resin adhesives. This study used the hot-press method at 170â„ƒ for 30 minutes. The compositions of zeolite and corn husk fiber tested were varied under three different additions of polyurethane resin of 15 g, 20 g, and 25 g, while the composition of sand was fixed at 60 g. The inclusion of corn husk fiber content reduces the density of the concrete and increases the porosity and water absorption. The physical properties analysis showed that the polymer concrete samples showed the highest density was 1.89 g/cm3 from 20 g of polyurethane resin and no addition of corn husk fiber; the highest porosity was 6.15% from 15 g of polyurethane resin and 10 g of corn husk fiber; and the highest water absorption was 5.85% from 15 g of polyurethane resin and 10 g of corn husk fiber. Because improved material quality and durability are linked to reduced water absorption rates in polymer concrete, the most favorable composition with minimal water absorption (0.51%) came from the sample utilizing 20 grams of polyurethane resin without incorporating corn husk fiber.

Effect of Temperature Variations Gelatinizing of Biodegradable Plastic Starch Porang (Amorphophallus Oncophyllus) with Glycerol Plasticizers on Its Characterization Sudiati, Sudiati; Maghfirah, Awan; Sofyan, Muhammad Zaidun; Syafira, Ridha; Mitri, Ayu
International Conference on Sciences Development and Technology The 2nd ICoSDTech 2022
Publisher : International Conference on Sciences Development and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar

The development of plastic polymers is widely used in the food and non-food industries, biodegradable plastics derived from porang starch into environmentally friendly plastics. Plastics are made by adding chitosan and adding a 60% glycerol plasticizer by varying the gelatinizing temperature in the manufacturing process. The gelatinization temperature was used in the process when the starch granule was heated by adding chitosan and glycerol so that the development of starch granules expand and produced a viscous liquid to provide the desired solution quality. The variations in the gelatinization temperature used are temperatures of 70 ˚C, 80 ˚C, and 90 ˚C, then mechanical, physical and characterization tests were carried out on biodegradable plastics. The effect of the gelatinization temperature of biodegradable plastics on the strong value of Tensile is getting lower the temperature, the higher the tensile strength value until it reaches a value of 0.7034 Mpa and at the elongation value which decreases with the higher the gelatinization temperature. The highest elongation value was 124.96% at a gelatinizing temperature of 70 ˚C. Meanwhile, the degradation test showed a decrease in mass every week and began to degrade in the fourth week, which took 28 days. SEM analysis of biodegradable plastics showed that there are white parts that clump together, because the glycerol plasticizer has a thick texture so that it is not dissolved evenly. The spectra results showed no change in the wave number of the FT- IR spectrum of the starch, chitosan, and glycerol spectrums with O-H, C-H, and N-H functional groups.

Characterization and Analysis of Hardness, Microstructure, and Crystallography of SS 304-Sheathed MgB2 Superconducting Wires Rivai, Rizky Ramadhani; Pramono, Andika Widya; Priyanto, Tri Hardi; Maghfirah, Awan
Metalurgi Vol 38, No 1 (2023): Metalurgi Vol. 38 No. 1 2023
Publisher : National Research and Innovation Agency (BRIN)

This research was conducted to analyze the hardness, microstructural morphology, and crystallography of the MgB2 compound in the form of a SS 304-sheathed superconducting wire. MgB2 superconducting wire with SS 304 outer sheath was manufactured using an ex-situ rolling process. The results of the Vickers hardness test with a load of 0.3 N showed the MgB2 hardness value of 355.1 HV. The results of observations with SEM-EDS (scanning electron microscopy-energy dispersive spectroscopy) showed the agglomerations of the second phase of (Mg)B-O with various compositions due to the rolling process. There was also a longitudinal crack in the MgB2 area due to the work-hardening phenomenon in the brittle MgB2 solid. There were no obvious Bragg peaks in the MgB2 phase. The detected Bragg peaks came from the austenitic (g-Fe) of SS 304-sheath.

Teacher Upgrading Skill in Preparing Materials and Examination Based on Images in Sibolga City Andriayani, Andriayani; Zuhra, Cut Fatimah; Maghfirah, Awan; Yanti, Maulida; Gea, Saharman; Pasaribu, Khatarina Meldawati; Piliang, Averrous Fazlurrahman
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 2 (2020): ABDIMAS TALENTA : Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

There are 61 primary/ibtidaiyah schools, 18 junior high schools, and 18 senior high schools in the city of Sibolga, which is located in Teluk Tapian Nauli, with a total number of teachers of about 2000. This is in line with the vision of Sibolga city (2016-2021) in order to create a stable, advanced, and successful Sibolga City by producing highly competitive quality human beings in order to create a harmonious, peaceful, secure and unified society. As mentioned above, one of its mission points is to prepare human resources (HR) that have integrity, reliable, competitive, expert in science and technology so that they able to compete in the global job market. As the education stakeholder, Sibolga Education and Culture Official has plan many outstanding work programs such as made a collaboration in partnership with the Universitas Sumatera Utara community service team. As a result, based on field observations and discussions, it was known that one of the obstacle that facing by the teachers in Sibolga is not being able to provide teaching materials and also picture-based examination questions as contained in the question grid. Currently, there are several technology-driven applications that can be used to make images or graphics creating process easier. Two of them are, GeoGebra Classic that used to create graphics and images in mathematics and Chemdraw that used to create structure images that related to chemistry. In addition word optimization training was also conducted to optimize teacher on preparing teaching materials with Ms. word.

Co-Authors Abdul Rahim Amira Fadhlin Andika Widya Pramono Andriayani Anwar Dharma Sembiring Anwar Dharma Sembiring Ayu Mitri Br Sitepu, Silvya Nurrein K. Cut Fatimah Zuhra Eddy Marlianto Eddy Marlianto Ginting, Herli Heni Meilanda Kurnia Brahmana Mis Ariska AJ Rambe Mitri, Ayu Muhammad Zaidun Sofyan Mulkan Iskandar Mulkan Iskandar Nasution Pasaribu, Khatarina Meldawati Piliang, Averrous Fazlurrahman Pratiwi, Dwi Ajeng Putri Mila Senda Sitorus Ramadina, Silvia Rivai, Rizky Ramadhani Saharman Gea Sianturi, Herty Afrina Sudiati Sudiati Sudiati Sudiati Syafira, Ridha Syahrul Humaidi, Syahrul Tri Hardi Priyanto Widyanti, Meutia Yanti, Maulida Yoshephin Romania Zega, Adelina Febriyanti Zuriah Sitorus

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