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All Journal Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Sains dan Teknologi TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Fisika Unand SEMIRATA 2015 JFA (Jurnal Fisika dan Aplikasinya) JOURNAL ONLINE OF PHYSICS JOIV : International Journal on Informatics Visualization Emerging Science Journal Journal of Physics: Theories and Applications Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Otomasi Kontrol dan Instrumentasi Jurnal Hilirisasi IPTEKS (JHI) Jurnal Ilmu Fisika MONSU'ANI TANO Jurnal Pengabdian Masyarakat Sainstek : Jurnal Sains dan Teknologi Indonesian Journal of Electrical Engineering and Computer Science BERNAS: Jurnal Pengabdian Kepada Masyarakat Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Makara Journal of Science Indonesian Journal of Community Empowerment and Service
Harmadi Harmadi
Universitas Andalas
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

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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.
Rancang Bangun Sensor Kelembaban Udara menggunakan Plastic Optical Fiber (POF) dengan Cladding TiO2-SiO2 dan Data Transmisi: Febrielviyanti, Harmadi, Dahyunir Dahlan, Yetria Rilda Febrielviyanti Febrielviyanti; Harmadi Harmadi; Dahyunir Dahlan Dahyunir Dahlan; Yetria Rilda Yetria Rilda
Jurnal Fisika dan Aplikasinya Vol 15 No 1 (2019): January 2019 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v15i1.4358

Abstract

The optical fiber is a transmission medium in the form of a cable made of glass or plastic used to transmit light signals from one point to another. The working principle of optical fibers utilizes the principle of perfect reflection by utilizing the refractive index difference between the core and cladding. The optical fiber can be used as a sensor by using an instrumentation system consisting of input, process, and output. Input or input uses a diode laser, where the spectrum is very narrow so it is suitable to be used as a source. The data transmission process uses optical fiber as a waveguide. Data recording transmits humidity using Arduino Uno and Ethernet Shield. The output is in the form of output voltage displayed on the LCD or PC. The best stripping length is 2 cm with TiO2-SiO2 coating as a substitute for cladding, which shows the value of R2 = 0.982. The average error obtained from the design of air humidity devices was 3.06%. This shows the incompatibility between reading a tool designed with a standard measuring instrument because the sensor designed is still very vulnerable to systematic errors.
Rancang Bangun Alat Deteksi Bahan Baku Gelatin Menggunakan Multisensor Gas Berbasis Machine learning Febby Trishe Ananda; Harmadi Harmadi; Wildan Panji Tresna; Aditya Eka Mulyono
Jurnal Fisika Unand Vol 15 No 4 (2026)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.15.4.423-429.2026

Abstract

In The demand for gelatin for halal food ingredients in Indonesia is very high. Pork-based gelatin, which is difficult to identify after undergoing the production process, is still widely used in the food and pharmaceutical industries. Analytical methods such as PCR and FTIR offer high accuracy, but they require high operational costs and specialized laboratory facilities. This study develops a machine learning-based electronic nose (e-nose) system to detect and classify gelatin types based on their raw material sources. This system integrates eight types of gas sensors to detect volatile organic compounds (VOCs) produced by each type of gelatin, which are then classified by PCA and predicted by LDA. The study will use gelatin with raw materials sourced from cows, pigs, and fish with varying gelatin concentrations of 1%, 3%, 5%, and 7%. Testing will be conducted for 30 minutes for each sample. The results of the testing prove that the device is capable of detecting and distinguishing gelatin based on its raw materials with a detection accuracy of 95%.
Co-Authors Abdul Jailani Gusri Adhitya Rolando Erlangga Adhitya Rolando Erlangga, Adhitya Rolando Adila Nadia Aditya Eka Mulyono Adrial, Rico Adrian, Diana Rahmi Afdal Afdal Afdal Afdal Afdal, Afdal Afdhal Muttaqin Afdhal Muttaqin Agus Rubiyanto Agustri, Novia Dwi Ahmad Fauzi Pohan Aida Rahayu Akrajas Ali Umar Alawiya, Tuti Alfraidila, Fadil Alimin Mahyudin Alwan, Muhammad Naufal Aminah Nurrrahmawati Ammari, Syafiq Andeskob Topan Indra Andeskob Topan Indra Andeskob Topan Indra Ani Fatimah Ani Fatimah, Ani Anindy Bahri Annisa Oktaviani Putri Arif Budiman Arifah, Azizah Ghina Arsis, Asi Noflanda Asi Noflanda Arsis Astuti Astuti Astuti Astuti Aulia Rabiyu Rizky Awaluddin Awaluddin Ayu Afifah Al-Farzaq Ayu Putri Ningsih Azizah Ghina Arifah Azizah Ghina Arifah Azmi Wahyu Anggita Azmi Wahyu Anggita, Azmi Wahyu Azzahra Zhuhrii Bahri, Anindy Bambang Widiyatmoko Basri, Feri Helmi Bayu Hadi Saputro Bayu Hadi Saputro Bayu Hadi Saputro, Bayu Hadi Biolita, Nadya Okta Cahyandari, Joanica Intan Cahyani, Harum Choirun Nisa, Hanny Christara Cicelia Naomi Costrada, Aldo Novaznursyah Dahyunir Dahlan Damayanti, Elok Dea Kurnia Harysandi Dedi Mardiansyah Della Rahmawarni Deswilan, Sixtinah Dewita, Novia Ratna Diah Sundari Dian Fitriyani Dian Milvita Dian Oktarisa Diana Rahmi Adrian Dwi Pujiastuti Dwi Pujiastuti Dwi Puryanti Egri Junita El Basthoh Elfira Saufina Elistia Liza Namigo, Elistia Elma Yusnita Elma Yusnita, Elma Elvaswer Elvaswer Elvina, Yuli F Febrielviyanti Fadil Alfraidila Fajri Fachrezy Hamid Fajrul Huda Fani Anjelina Fani Anjelina Farah Syauqi Febby Trishe Ananda Febrielviyanti Febrielviyanti Febrielviyanti, - Feri Helmi Basri Feriska Handayani Irka, Feriska Handayani Firmansyah - Firmansyah - Firmansyah Firmansyah Fitri, Khairini Fitri, Riska Maya Fitri, Sari Widya Fitria Khairunnisa Gatut Yudoyono Geby Sri Ayu Oktavia Geby Sri Ayu Oktavia Genta Kampai Gusri, Abdul Jailani Hamid, Fajri Fachrezy Harum Cahyani Haryanto Saputra Havizzullah Havizzullah Havizzullah, Havizzullah Hawariyi Ola Yuzria Hawariyi Ola Yuzria Helmi Septaria Herlin Helmi Yusnaini Hidayati, Miskhatul Hiroyuki Hashiguchi Hiroyuki Hashiguchi Hiroyuki Hashiguchi Hiroyuki Hashiguchi, Hiroyuki Huda, Erin Ficrah Huda, Fajrul I Kadek Agus Sara Sawita Ikhsan, Khairatul Ikhsan, Lukita Sari Ikhwani, Miftah Imam Taufik Imam Taufiq Imam Taufiq Imam Taufiq Inggi Dwi Putri Inggi Dwi Putri Iqbal Ramadhan Iqbal Ramadhan Irawan, Tomi Isdi, Muhammad Ridho J. Tongkukut Joanica Intan Cahyandari Juanda, Muhammad Tri Junita, Egri Kampai, Genta Kemal, Badrul Mustafa Kemal, Badrul Mustafa Khairatul Ihksan Khairatul Ikhsan Khairini Fitri Khairunnisa, Fitria L. Luini Lisna Meylani Lopa, Reforma Lukita Sari Ikhsan M Fachri Yunus M Fachri Yunus M Farhan Ramadhan M. Ali Shafii M. Ali Shafii M. Farhan Ramadhan Manda, Poni Dwi Mardian Peslinof Marzuki Marzuki Marzuki Marzuki Marzuki Marzuki Marzuki Marzuki Mega Roza Lia Meqorry Yusfi Meyrlina, Luthfia Miftah Ikhwani Miskhatul Hidayati Mitra Djamal Mohammad Ali Shafii Mora Mora Mora Mora Mora Muchlian, Meli Muhamad Iqbal Muhamad Iqbal Muhamad Zainuddin Muhammad Arif Muhammad Arif Muhammad Faisal Muhammad Faisal Muhammad Kahfi Muhammad Kahfi Muhammad Naufal Alwan Muhammad Ridho Isdi Muhammad Shadri Muhammad Tri Juanda Muhammad Zikri Dimas Kurniawan Muharmen Suari Muldarisnur, Mulda Mutya Vonnisa Muzirwan Muzirwan Nadia Yudia Putri Nadia, Adila Nadya Okta Biolita Naela Amalia Zulfa Naela Amalia Zulfa Najmah Neneng Fitrya Nini Firmawati Nola Fridayanti Nola Fridayanti, Nola Nor Azlan Mohd Aris Novia Dwi Agustri Novia Ratna Dewita Nurrahmawati, Aminah Nurrrahmawati, Aminah Nurul Annisa Nurul Annisa Nurul Hasanah Okky Frananda Putra Okta Ramadhani Pratama, Andra Putra, Okky Frananda Putri, Annisa Oktaviani Putri, Inggi Dwi Putri, Nadia Yudia Putri, Syerly Eka Rabiatul Adawiyah Rabiatul adawiyah Rahayu, Aida Rahmad Rasyid Rahmad Rasyid Rahmat Rasyid Rahmat Rasyid Rahmawarni, Della Ramacos Fardela Ramadhan, M. Farhan Ramadhan, Ravidho Ramadhani Perdana Ramadhani Perdana, Ramadhani Rani Delvihardini Rasyid, Rahmad Ravidho Ramadhan Ravidho Ramadhan Reforma Lopa Rhahmi Adni Pesma Rini Oktaviani Riska Maya Fitri Rizky, Aulia Rabiyu Robi Zulfahri Rodhiah, Salsa Ariani Roni Syafrialdi Roni Syafrialdi, Roni Salsabila, Wulandari Sandra Sandra Saputra, Haryanto Sari Widya Fitri Saufina, Elfira Seni Herlina Shadri, Muhammad Shimomai, Toyoshi Sholihun, Sholihun Siti Aisyah Siti Aisyah Siti Chadijah Sixtinah Deswilan Sixtinah Deswilan Sixtinah Deswilan Sri Handani Sri Oktamuliani Suari, Muharmen Subhan Fahmi Nasution Sugeng Nugroho Suhariningsih Sundari, Diah Suryadi Suryadi Suryanto, Wiwit Syafiq Ammari Syauqi, Farah Syerly Eka Putri Sylvia Adhiani Tomi Irawan Toyoshi Shimomai Toyoshi Shimomai Trengginas Eka Putra Sutantyo Tuti Andriani Usna, Sri Rahayu Alfitri Veithzal Rivai Zainal Wildan Panji Tresna Wildian Wildian Wildian Wildian Wulandari Dwi Safitri Yetria Rilda Yozi Amasda Yude Yude, Yozi Amasda Yuli Elvina Yuliandari, Annisa Yunus, M Fachri Zamora, Ronaldi Zhuhrii, Azzahra Zulfahri, Robi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi