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All Journal Jurnal Ilmu Pertanian Indonesia Komunikasi Fisika Indonesia Indonesian Physical Review Jurnal Pengabdian UNDIKMA Jurnal AbdiMas Nusa Mandiri Pillar of Physics: Jurnal Berkala Ilmiah Fisika Journal of Experimental and Applied Physics
Abdul Djamil Husin
Department Of Physics, Faculty Of Mathematics And Natural Sciences, IPB University, Jl. Meranti Kampus IPB Dramaga, Bogor 16680
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Efisiensi Energi Bahan Bakar Sekam dan Kayu pada Proses Sterilisasi Media Tumbuh Jamur Tiram Putih Abdul Djamil Husin; . Irzaman; Jajang Juansah; Touwil Umrih; Khafit Pratama Hendratno; Ella Rahmadani; Sumarjono Effendy
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 2 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (136.687 KB)

Abstract

We have investigated the sterilization at media pleurotus otreatus using rice husk fuel and wood in various 6, 8 and 10 hours. We carried out efficiency energy for pleurotus otreatus medium sterilization at 8 hours using rice husk fuel is 14.28%, whereas efficiency energy for pleurotus otreatus medium sterilization using wood is 17.35%. The results show that cooking stove from rice husk are suitable for use as renewable energy technology applications to support E3i village (Energy, Economics and Environment).
ANALISIS DAN SINTESIS BUNYI PETIKAN KALIMBA MENGGUNAKAN TRANSFORMASI FOURIER Abd Djamil Husin; Indriyanti Rahmi Setyani; Sidikrubadi Pramudito; Sitti Yani; Ardian Arif Setiawan
Indonesian Physics Communication Vol 20, No 3 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.3.259-266

Abstract

This research aims to analyze the sound produced by kalimba plates using the Fourier transformation. This research went through two stages, namely the analysis stage and the synthesis stage. The kalimba plate is plucked with variations in the applied force of 2 N to 5.5 N. The sound of the kalimba pluck is recorded using a sound sensor connected to PASCO Capstone software so that a deviation graph is produced as a function of time. The data obtained was then analyzed using Octave software. The research results show that the frequency is directly proportional to the damping coefficient value. The higher the frequency, the higher the frequency spectrum will be widened. The resulting Fourier coefficients only capture the values of the fundamental harmonic frequencies. This is because the kalimba plate has high rigidity.
Analysis and Synthesis of Guitar Sounds with Hammer on Strumming Technique Abd Djamil Husin; Koharudin Koharudin; Sidikrubadi Pramudito; Sitti Yani; Rima Fitria Adiati
PILLAR OF PHYSICS Vol 16, No 2 (2023)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/15354171074

Abstract

This research aims to analyze and synthesize periodic signals derived from guitar string plucking with hammer-on technique. This research has three stages, namely the data collection stage, the analysis stage, and the synthesis stage. The guitar string was plucked with a tension of 2.5 N and recorded using a sound sensor connected to PASCO Capstone software. The data used has two variations, namely the sound signal of a hammer-on pluck with a half tone increase and a one tone increase. Data analysis was carried out using MATLAB software to obtain deviation graphs as a function of frequency, damping coefficient values, and frequency spectra. The results showed that after hammer-on the amplitude of the tone decreased drastically as the mass per unit length of the string decreased. The initial tone before the hammer-on will appear in the tone after the hammer-on with a lower amplitude as the mass per unit length of the string increases. The synthesis of guitar sounds with this technique is done by combining the individual tones obtained and adjusting the time interval and amplitude according to the literature data
Pemberdayaan Masyarakat Melalui Pengolahan Batang Pisang Menjadi Benang Sebagai Bahan Baku Kain dan Industri Kreatif Siti Nikmatin; Abd Djamil Husin; Rima Fitria Adiati
Jurnal Pengabdian UNDIKMA Vol. 4 No. 2 (2023): May
Publisher : LPPM Universitas Pendidikan Mandalika (UNDIKMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jpu.v4i2.6260

Abstract

This community service activity aims to improve the economy of the village community and bring biomaterial research innovation results through the processing of banana stems into yarn as a raw material for cloth and the creative industry. The method of implementing this service used training which consisted of the stages of program introduction, processing of banana stem waste, and commercialization. The partners for this activity were the people in Sidorejo Village, Sukosewu District, Bojonegoro Regency, which are members of youth organizations. The results of this community service activity were analyzed descriptively, and simple banana stem processing positively impacted new knowledge and sources of income. The people of Siderejo village got additional daily income, activities for local economic development, and added value in knowledge, affective, and motor skills.
Modification of Thermal Column in Kartini Reactor Using Briquettes and Powder of Coconut Shell for BNCT: Monte Carlo Simulation Yani, Sitti; Husin, Abd. Djamil; Sudiro, Sukma Tri Adinda
Journal of Experimental and Applied Physics Vol 2 No 4 (2024): December Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i4.72

Abstract

This study was analyzed the distribution of thermal neutron flux and gamma ray dose rate in the Kartini rector thermal column modified by replacing graphite material with briquettes and coconut shell powder as a moderator using Monte Carlo simulation, PHITS. The particle source uses neutrons with energies of 3 MeV, 4 MeV, and 5 MeV placed in front of the thermal column. The results showed that of the four modifications, only design 2 of the thermal column with briquettes at 3 MeV energy met the IAEA standard for Boron Neutron Capture Therapy (BNCT). The thermal column material with coconut shell powder does not meet the IAEA standard. This shows that coconut shell briquettes are more effective in moderating fast neutrons than coconut shell powder because the briquettes have the characteristic of greater density, which is almost the same value as the density of graphite.
MONTE CARLO ANALYSIS OF FETAL DOSE DISTRIBUTION IN PREGNANCY FOR DIFFERENT FETAL AGES, BEAM LOCATION, BEAM ENERGY, AND FIELD SIZES Nikmah, Khusniatun; Ramadhan, Muhammad Vitro; Sumaryada, Tony; Rhani, Muhammad Fahdillah; Husin, Abd. Djamil; Yani, Sitti
Indonesian Physical Review Vol. 8 No. 1 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i1.406

Abstract

Treatment with radiotherapy in pregnant women may occur due to some critical conditions. The dose given during the treatment process is not only received by the patient but can also be absorbed by the fetus which can affect its growth. Moreover, the radiation target is near the fetus such as the lung. This study aims to determine the dose distribution to the fetus with variations in fetal age (trimester 1, 2, and 3), beam energy, field size, and fetal distance to the target location (lung). The entire simulation utilized the Monte Carlo-based software EGSnrc-DOSXYZnrc which produced a 3-dimensional dose distribution on the virtual phantom. The simulated virtual phantom is a box with a size of 40×40×40 cm3 containing several materials, namely water, tissue, and lung. The size of the fetus is varied according to trimesters 1, 2, and 3. The beam is in the form of monoenergetic photons with energies of 3 MeV and 5 MeV emitted from above with a source to surface distance (SSD) of 48 cm. The field size was set at 5×5 cm2 and 8×8 cm2 on the phantom surface. The beam axis was located at a distance of 5 cm and 3 cm from the fetus. The results showed that the four variations performed affected the fetal dose, where the fetal dose increased considerably when the field size was enlarged and the beam axis was closer to the fetal position. The increase in fetal dose is also influenced by the increase in fetal age and beam energy. Meanwhile, the location of the beam below the lung causes an increased dose to the fetus due to the closer position of the beam to the fetus.
Biomaterial Geotextile Berbahan Biomassa untuk Meningkatkan Produktivitas Pertanian di Desa Sidorejo Kabupaten Bojonegoro Nikmatin, Siti; Husin, Abd Djamil; Mulyanto, Budi; Adiati, Rima Fitria
Jurnal Pengabdian UNDIKMA Vol. 6 No. 2 (2025): May
Publisher : LPPM Universitas Pendidikan Mandalika (UNDIKMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jpu.v6i2.15360

Abstract

This community service program aims to develop sustainable geotextiles made from local biomass. It involves training farmers in their production as an effort to reduce plastic use, improve soil health, and increase yields of papaya and chili crops. This community service implementation uses a participatory approach targeting farmers who are members of the "Karya Tani" farmer group in Desa Sidorejo, Bojonegoro Regency, East Java, with a total of 25 participants. The results of this service indicate that plastic mulch can be replaced with geotextiles made from local biomass in maintaining soil moisture, weed control, sunlight absorption, and water management. The best results were obtained from coconut coir geotextiles compared to straw, yielding 500 kg of papaya harvest from a 0.25-hectare plantation. Ultimately, this community development project aims to promote sustainable agriculture, empower rural communities, and contribute to a circular economy.
Accuracy and Limitations of the Liquid Drop Model (LDM) in Nuclear Binding Energy Calculations Muhammad Septian Maulana; Faozan Faozan; Sitti Yani; Abd Djamil Husin Djamil
Journal of Experimental and Applied Physics Vol 3 No 4 (2025): December Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v3i4.161

Abstract

This study aims to evaluate the accuracy of the Liquid Drop Model (LDM) in predicting atomic nuclear binding energy and binding energy per nucleon, by comparing it with reference values. LDM is based on the assumption that atomic nuclei can be treated as drops of incompressible fluid. Nuclear binding energy is calculated using the Semi-Empirical Mass Formula (SEMF), and the results are analyzed through linear regression comparison with empirical mass defect data. The calculation results show that the LDM produces small deviations for binding energy values in medium nuclei. However, this model is less accurate in predicting binding energy for light and heavy nuclei. The inaccuracy in heavy nuclei is explained by the dominance of prominent collective effects; here, the behavior of the nucleus is better explained by the interaction of all nucleons as a whole, rather than by the behavior of individual nucleons. This reinforces the basic principle of LDM in heavy nuclei. In addition, the calculation of binding energy per nucleon by LDM produces the highest binding energy peak in Krypton-80 with a value of 8.98 MeV/nucleon. This result differs from empirical reference values that place Iron-56 (Fe-56) as the most stable nucleus with the highest binding energy, namely 8.79 MeV/nucleon. This deviation in the stability peak highlights the limitations of LDM, particularly regarding the lack of consideration of quantum effects and nuclear shell structures that are more relevant to certain nuclei.
INOVASI BIOPOT BERBAHAN JERAMI PADI SEBAGAI SUBSTITUSI POLYBAG PEMBIBITAN DI DESA SIDOREJO, BOJONEGORO Siti Nikmatin; Irmansyah Irmansyah; Abd Djamil Husin; Rima Fitria Adiati; Naufal Luthfi Ahya
Jurnal AbdiMas Nusa Mandiri Vol. 8 No. 2 (2026): Periode April 2026
Publisher : LPPM Universitas Nusa Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33480/abdimas.v8i2.7315

Abstract

The abundance of rice straw biomass waste in Desa Sidorejo, Kabupaten Bojonegoro, has not been managed optimally and can cause environmental problems. On the other hand, the use of plastic polybags in seedling cultivation contributes to the accumulation of non-biodegradable plastic waste. The objective of this community service project is to introduce an innovation in the production of biopots from nonwoven geotextile sheets made from rice straw fibers. The straw is bonded using simple roll-press technology to create geotextile, and the final product can be used as a substitute for plastic polybags. The activity partners were the “Karya Tani” farmer group, consisting of 20 participants. The implementation methods included outreach, training, and evaluation. Evaluation was conducted through pre-tests and post-tests, as well as field observations over a three-month period. Evaluation results showed a significant increase (100%) in knowledge and skills. Meanwhile, regarding attitude, 76% of participants engaged in bio-pot production to utilize their free time. The implications of this activity include a reduction in agricultural waste and dependence on plastic in Sidorejo Village, while also opening opportunities for the development of creative business units based on a circular economy for the local farmers’ group.
Co-Authors Ardian Arif Budi Mulyanto Ella Rahmadani Faozan Ahmad Indriyanti Rahmi Setyani Irmansyah Irmansyah Irzaman, Irzaman Jajang Juansah Khafit Pratama Hendratno Koharudin Koharudin Muhammad Septian Maulana Naufal Luthfi Ahya Nikmah, Khusniatun Ramadhan, Muhammad Vitro Rhani, Muhammad Fahdillah Rima Fitria Adiati Sidikrubadi Pramudito Sidikrubadi Pramudito Siti Nikmatin Sudiro, Sukma Tri Adinda Sumarjono Effendy Tony Sumaryada Touwil Umrih Yani, Sitti