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All Journal Jurnal Sains Materi Indonesia Komunikasi Fisika Indonesia Jurnal Fisika Unand Jurnal Hilirisasi IPTEKS (JHI) Jurnal Ilmu Fisika INTEGRITAS : Jurnal Pengabdian BERNAS: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat Nusantara Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Indonesian Journal of Community Empowerment and Service
Alimin Mahyudin
Jurusan Fisika FMIPA Universitas Andalas
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

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KARAKTERISTIK PAPAN PARTIKEL DARI KULIT KAKAO DAN SERAT PINANG DENGAN VARIASI POLYMERIC METHYLENE DIPHENYL DIISOCYANATE Putri, Yanandra Amelia; Mahyudin, Alimin
Jurnal Fisika Unand Vol 13 No 5 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.5.671-676.2024

Abstract

Research has been carried out to analyze the effect of the percentage of polymeric methylene diphenyl diisocyanate (PMDI) on the physical and mechanical properties of particleboard made from cocoa shells and areca fiber. This research uses a ball mill to obtain the particle size that passes through an 80 mesh sieve. The physical properties tested were density and water content, while the mechanical properties tested were flexural strength and compressive strength using the Universal Testing Machine (UTM). The PMDI variations used are 4%, 6%, 8% and 10%. The density values obtained ranged from 0.97-1.13 g/cm3, water content values ranged from 7.3 - 9.11%, compressive strength values ranged from 216.63-285.02 kg/cm2 and flexural strength values ranged from 1713 .97-2235.23 kg/cm2. The best particle board is particle board with a PMDI content of 8%. The water content and compressive strength values of particle board meet SNI 03-2105-2006, but the density and flexural strength values do not meet SNI 03-2105-2006. Based on the density value of the particle board, the particle board produced is a type of high density particle board.
Karakterisasi Kuat Impak dan Densitas Komposit Hibrid Polipropilena - Pati Singkong dan Serat Pinang - Serat Eceng Gondok Alimin Mahyudin; Yazid Reza Hanovatias
Jurnal Fisika Unand Vol 14 No 6 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.6.630-634.2025

Abstract

The impact strength and density characterization of hybrid composites with polypropylene - cassava starch matrix using areca nut fiber and water hyacinth fiber has been carried out. The purpose of this study is to obtain superior and environmentally friendly hybrid composites. The ratio of areca nut fiber and water hyacinth is 1:1 while the matrix composition is polypropylene, sorbitol and cassava starch is varied with a ratio of 8:1:1. The percentage of fiber used in each sample is 5%, 10%, 15%, 20% while the percentage of matrix used is 95%, 90%, 85%, 80%. The tests carried out are impact strength and density. Based on the results of the study, the highest impact strength value is 0.0624 J / mm2 found in the 5% fiber volume fraction. The highest density value is 0.844 g / cm2 found in the 5% fiber volume fraction. Therefore, from the research results, it can be concluded that the impact strength value meets the car dashboard standards and the density value obtained is included in the type of particle board with medium density.
SOSIALISASI DAN PEMETAAN POTENSI TANAH LONGSOR MENGGUNAKAN METODE MIKROSEISMIK DAN GEOLISTRIK DI KAWASAN OBJEK WISATA BUKIT NOBITA Marzuki Marzuki; Mutya Vonnisa; Ahmad Fauzi Pohan; Arif Budiman; Imam Taufiq; Trengginas Eka Putra Sutantyo; Elistia Liza Namigo; Dian Milvita; Alimin Mahyudin; Nini Firmawati; Muldarisnur Muldarisnur; Afdal Afdal; Dahyunir Dahlan; M. Ali Shafii; Afdhal Muttaqin; Rico Adrial; Dedi Mardiansyah; Harmadi Harmadi; Zulfi Zulfi; Geby Sri Ayu Oktavia; Fani Anjelina; Nurul Annisa
Jurnal Hilirisasi IPTEKS Vol. 6 No. 2 (2023)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v6i2.655

Abstract

Nobita Hill is one of the areas being developed as a tourist attraction in the city of Padang. Above Nobita Hill is a beautiful view, and you can see the picture of Padang City. However, the hilly topography with steep slopes makes this area prone to landslides. This activity aims to map the potential for landslides on Novita Hill. Activities start from preparation, implementation in the field, and evaluation. Field activities are carried out in two stages. The first stage is an experiment to map the landslide potential. The second stage is socialization. The target audience for this activity is the Village Head of Jua Nan XX Village and its officials and the community around Nobita Hill. The results of the study and mapping were disseminated to the village administration and community leaders involved in the development of the Bukit Nobita tourism area, which was carried out on November 16, 2022. The result of tourist objects often changes land use and cover. However, mitigation of the potential for landslides in this area has never been done. Therefore, the Andalas University Physics Department team mapped the potential for landslides on Novita Hill for six months, using microseismic and geoelectric methods. This activity obtained a map of the distribution of dominant frequencies, a map of the distribution of amplification, and an identification of slip planes concerning the potential for landslides on Nobita Hill. Furthermore, the results of the mapping and mitigation efforts have been disseminated to the village administration and community leaders involved in the development of the Bukit Nobita tourism area. This activity was carried out well. The landslide potential distribution map obtained from this activity is input for the community and stakeholders in developing the Buki Nobita tourist attraction that is safe from disasters.
Pembuatan Dan Karakterisasi Bolus Berbahan Beeswax Dengan Variasi Komposisi Massa Petrolleum Jelly Murmana, Milania Ada Loveleace; Mahyudin, Alimin; Adrial, Rico; Diyona, Fiqi
Jurnal Fisika Unand ##issue.vol## 15 ##issue.no## 3 (2026)
Publisher : Universitas Andalas

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

Abstract

The manufacture and characterization of beeswax bolus with various petroleum jelly mass compositions using a thermal mixing method has been carried out. Boluses measuring 10×10 cm with a thickness of 1.0 cm were characterized based on physical properties (density and water absorption), mechanical (tensile strength, strain, and elastic modulus), Relative Electron Density (RED), and absorbed dose. The results showed that the mass composition significantly influenced the bolus characteristics. The sample with a composition of 90:30 had a density of 0.966 g/cm³ which was closest to soft tissue, while the water absorption was in the range of 7.22– 8.54% with the lowest value at the composition of 85:35. Increasing the petroleum jelly content decreased the tensile strength and elastic modulus (1138–2251 MPa), indicating that the material became more flexible. Measurement of the absorbed dose at electron energies of 6 and 9 MeV and RED analysis of CT images showed that the dosimetric response was influenced by the mass composition, with certain RED values equivalent to breast tissue. Overall, the 85:35 composition provides the closest characteristics to human soft tissue and has the potential to be used as a radiotherapy bolus.
Co-Authors 'Arifah, Nur A. Fadhil Desafa Adrial, Rico Afdal Afdal Afdal Afdal Afdal, Afdal Afdhal Muttaqin Afdhal Muttaqin Afri, Hafiza Rahmi Zul Agus Taufiq Ahmad Fauzi Pohan Al Rahman Andrestama, Habib Anggraini, Ressi Annisa, Hafizha Fitri Anugrah, Fajar Anum, Paridah Arif Budiman Arif Budiman Arsal Chayri Iby Arsal Chayri Iby Artika, Mila Putri Astuti Astuti Astuti Aulia, Hana Awaluddin - Awaluddin -, Awaluddin Ayuzia Puspa Indah Betta Centaury Citra, Firda Yulia Dahyunir Dahlan Damayanti, Elok Dedi Mardiansyah Defta Eka Sari Deora Murza Oktora Deri Wahyuni Desha Putri, Indah Pratiwi Devi Yunita Devi Yunita Devi Yunita Dewi, Mutia Sukma Dhia, Husna Dian Fitriyani Dian Fitriyani Dian Milvita Dwi Pujiastuti Dwi Pujiastuti Dwi Puryanti Dwisa, Mega Dynanty, Sindy Dwi Putri Elistia Liza Namigo, Elistia Elvaswer Engkir Sukirman Fajar Anugrah Fani Anjelina Fani Anjelina Fatmi, Riefli Feriska Handayani Feriska Handayani Irka, Feriska Handayani Fiqi Diyona Fiqi Diyona, Fiqi Firda Yulia Citra Geby Sri Ayu Oktavia Geby Sri Ayu Oktavia Habib Andrestama Hafiza Rahmi Zul Afri Haldis Alvaro Hana Aulia Hanifah Karmuliani Hanovatias, Yazid Reza Harmadi Harmadi Hilda Trisna Hilda Trisna Husna Dhia Imam Taufiq Imam Taufiq Imam Taufiq Indah Pratiwi Desha Putri Indah, Ayuzia Puspa Ira Febri Winda Jatmika, Lara Putri Karmuliani, Hanifah Kgs Haprido Kgs Haprido, Kgs Lara Putri Jatmika Lisha, Sonia Yong Lovely Dwina Putri M. Ali Shafii M. Ali Shafii M. Wahyu Ramadhani Mardiyanto - Mardiyanto - Mardiyanto Mardiyanto Mardiyanto Mardiyanto Marzuki Marzuki Marzuki Marzuki Mega Dwisa Meqorry Yusfi Meri Darmawi Meri Darmawi Meri Darmawi Mila Putri Artika Moh. Rasyid Ridho Mohammad Ali Shafii Mona Vadila Monica, Shelly Muhammad Blestynsky Renaldi Muhammad Fachrul Rozi Muhammad Fachrul Rozi, Muhammad Fachrul Muldarisnur, Mulda Murmana, Milania Ada Loveleace Mutia Sukma Dewi Mutya Vonnisa Nabila, Nurul Nini Firmawati Nur 'Arifah Nurul Annisa Nurul Annisa Nurul Hasanah Nurul Hasanah Nurul Nabila Nurwijayanti Oktora, Deora Murza Olly Norita Tetra Paridah Anum Putri, Lovely Dwina Putri, Yanandra Amelia Qorina, Ummi Rahman, Al Rahmat Rasyid Ramacos Fardela Ramadhani, M. Wahyu Randa Randa Randa, Randa Rasyid Ridho Renaldi, Muhammad Blestynsky Ressi Anggraini Riefli Fatmi Salim Muhaimin Sari, Defta Eka Shelly Monica Sindy Dwi Putri Dynanty Sonia Yong Lisha Sri Handani Sri Oktamuliani Suci Olanda Suci Olanda Syahfandi Ahda Syahfandi Ahda Syahfandi Ahda Syahfandi Ahda Syahfandi Ahda Sylvia, Yosi Trengginas Eka Putra Trengginas Eka Putra Sutantyo Uchi Delfia Uchi Delfia Ummi Qorina Ummi Qorina Usna, Sri Rahayu Alfitri Vadila, Mona Vinny Alvionita Wahyuni, Deri Wildian Wildian Winda, Ira Febri Yanandra Amelia Putri Yazid Reza Hanovatias Yazid Reza Hanovatias Yoniza, Yuliana Yosi Sylvia Yuliana Yoniza Yusfi, Meqqory Zozy Aneloi Noli Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi, Zulfi