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All Journal International Journal of Renewable Energy Development BERKALA FISIKA Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Indonesian Journal of Physics and Nuclear Applications Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Jurnal Otomasi Kontrol dan Instrumentasi Jurnal Ilmu Fisika Molekul: Jurnal Ilmiah Kimia ASEAN Journal on Science and Technology for Development Jurnal Fisika Indonesia Molekul: Jurnal Ilmiah Kimia International Journal of Renewable Energy Development
Bilalodin Bilalodin
Department Of Physics, Faculty Of Mathematics And Natural Science, Universitas Jenderal Soedirman, Jalan Dr. Suparno Karangwangkal, Purwokerto 53123
Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics

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ANALISIS KANDUNGAN MINERAL BERPOTENSI TINGGI PADA PASIR GALIAN DI WILAYAH KABUPATEN BANYUMAS Zaroh Irayani; Bilalodin Bilalodin
Molekul Vol 2, No 2 (2007)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (132.111 KB) | DOI: 10.20884/1.jm.2007.2.2.37

Abstract

It have been done analysis high potential mineral contents of sands and sandstone in Banyumas region. Sands and sandstone are taken from mining traditional at rivers and river’s stone grinder place. Sand samples were taken from Tajum, Logawa, Serayu and Klawing river, while sandstone were taken from Banjaran, Logawa and Klawing river’s grinder place. Sand was separate using permanent magnet to disassociated the magnetic and non magnetic mineral content and analyzed by X-ray difraction to reveal the mineral types. The Result indicated that river sand contained 39% magnetic mineral and 61% non magnetic. While identification using X-ray difraction obtained that sand have mineral of complex structured of valuable element such as Fe, Ti, Si and Zn and also rare earth like Y, Ca, Li and La.
Characteristics in Water Phantom of Epithermal Neutron Beam Produced by Double Layer Beam Shaping Assembly Bilalodin Bilalodin; Gede Bayu Suparta; Arief Hermanto; Dwi Satya Palupi; Yohannes Sardjono
ASEAN Journal on Science and Technology for Development Vol. 36 No. 1 (2019): Vol 36 No 1 (2019)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.947 KB) | DOI: 10.29037/ajstd.519

Abstract

A Double Layer Beam Shaping Assembly (DLBSA) was designed to produce epithermal neutrons for BNCT purposes. The Monte Carlo N-Particle eXtended program was used as the software to design the DLBSA and phantom. Distribution of epithermal neutron and gamma flux in the DLBSA and phantom and absorbed dose in the phantom were computed using the Particle and Heavy Ion Transport code System program. Testing results of epithermal neutron beam irradiation of the water phantom showed that epithermal neutrons were thermalized and penetrated the phantom up to a depth of 12 cm. The maximum value of the absorbed dose was 2 × 10-3 Gy at a depth of 2 cm in the phantom.
Modeling and Analysis of Percentage Depth Dose (PDD) and Dose Profile of X-Ray Beam Produced by Linac Device with Voltage Variation Bilalodin Bilalodin; Farzand Abdullatif
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol 8, No 2 (2022): June
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v8i2.23622

Abstract

The Percentage Depth Dose (PDD) and dose profile of X-Ray output from a LINAC therapy device have been modeled and analyzed. The research was conducted by simulation method through the use of Particle and Heavy Ion Transport code System (PHITS) program. The LINAC therapy device modeled in this work refers to the Siemens Primus LINAC therapy device, which is operated at 6 MV, 10 MV and 18 MV voltages. Determination of PDD was carried at a depth of 0-30 cm and dose profile at a depth of 0-20 cm in a water phantom, placed at 100 cm from the source, which is exposed to a radiation field area of 10×10 cm2. Results from the modeling of the LINAC therapy device agrees with the actual X-ray apparatus and has produced Bremsstrahlung X-ray. It was found from the analysis of the PDD curve that the maximum doses are at the depth of 1.5 cm, 2.5 cm and 3.4 cm. The value of build up factor for each LINAC voltage agrees with the reference. Additionally,  the results of the analysis of the doses profile suggest that the X-ray output has good degree of uniformity. The flatness of dose profile occurs at the depth of 20 cm with percentage value of flatness at 1.6 %, 1.9 % and 1.2 %. The flatness values are all less than 2%. The flatness values shows ≤ 2 % deviation from reference value, which is below the tolerance range required in a measurement.
Analisis Kandungan Senyawa Kimia dan Uji Sifat Magnetik Pasir Besi Pantai Ambal (Halaman 29 s.d. 31) Bilalodin -; Sunardi -; Muhtar Effendy
Jurnal Fisika Indonesia Vol 17, No 50 (2013)
Publisher : Department of Physics Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (163.27 KB) | DOI: 10.22146/jfi.24420

Abstract

Analisis senyawa kimia dan uji sifat magnetic pasir besi telah dilakukan. Tujuan penelitian adalah mengetahui kandungan mineral magnetik dan sifat magnetik  yang terdapat pada pasir besi pantai Ambal. Sampel pasir besi diambil dari  pantai Ambal. Pasir diekstraksi dengan menggunakan magnet permanen untuk memisahkan  pasir magnetik dan non magnetik. Pasir magnetik yang telah dipisahkan dilakukan pengujian jenis kandungan mineral dengan  XRD (X-Ray Diffraction) dan uji sifat magnetiknya dilakukan menggunakan VSM (Vibrating Sample Magnetometer).  Hasil penelitian menunjukkan  jenis mineral magnetik pasir pantai Ambal Kecamatan Mirit Kabupaten Kebumen berbentuk senyawa  Magnetite  (Fe3O4) dan Hematite (Fe2O3). Perhitungan nilai suseptibilitas magnetik sebesar 31,88 x10-6 m3/kg   Berdasarkan nilai permeabilitas relatif yang terhitung, mineral magnetik pasir pantai Ambal kecamatan Mirit Kabupaten Kebumen termasuk kategori feromagnetik.
Numerical Analysis of Energy Converter for Wave Energy Power Generation-Pendulum System Jamrud Aminuddin; Mukhtar Effendi; Nurhayati Nurhayati; Agustina Widiyani; Pakhrur Razi; Wihantoro Wihantoro; Abdullah Nur Aziz; R Farzand Abdullatif; Sunardi Sunardi; Bilalodin Bilalodin; A Arifin
International Journal of Renewable Energy Development Vol 9, No 2 (2020): July 2020
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.9.2.255-261

Abstract

The wave energy power generation-pendulum system (WEPG-PS) is a four-wheeled instrument designed to convert wave power into electric energy. The first wheel is connected to the pendulum by a double freewheel, the second and third are ordinary wheels, while the fourth is a converter component that is axially connected to the electric generator. This design used the Euler-Lagrange formalism and Runge-Kutta method to examine an ideal dimension and determine the numerical solution of the equation of motion related to the rotation speed of the wheels. The result showed that the WEPG-PS' converter system rotated properly when its mass, length, and moment of inertia are 10 kg, 2.0 m, and 0.25 kgm2, respectively. This is in addition to when the radius of the first, second, third, and fourth wheels are 0.5, 0.4, 0.2, and 0.01 m, with inertia values of 0.005, 0.004, 0.003, and 0.1 kgm2. The converter system has the ability to rotate the fourth wheel, which acts as the handle of an electric generator at an angular frequency of approximately 500 - 600 rad/s. The converter system is optimally rotated when driven by a minimum force of 5 N and maximum friction of 0.05. Therefore, the system is used to generate electricity at an amplitude of 0.3 - 0.61 m, 220 V with 50 Hz. Besides, the lower rotation speed and frequency of the energy converter of the WEPG-PS (300 rad/s) and induction generator (50 Hz) were able to generate electric power of 7.5 kW. 
The Isolation, Immobilization, and Characterization of Urease from The Seeds of Winged Bean (Psophocarpus tetragonolobus (L.) DC. Zusfahair, Zusfahair; Ningsih, Dian Riana; Fatoni, Amin; Bilalodin, Bilalodin; Nuraini, Aprilia Nafi
Molekul Vol 18 No 1 (2023)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2023.18.1.5932

Abstract

Urease has been utilized in the field of health and industry. Urease is commonly used in the form of free enzyme, so that the utilization is limited. Urease efficiency can be improved using immobilization enzyme. This research aimed to do the urease isolation, immobilization, and characterization from the winged bean seeds. This research was started by determining the amino-acid content of winged bean seeds using the Liquid chromatography-mass spectrometry (LCMS). The winged bean seeds were germinated and extracted. The obtained crude extract’s activity was determined using Nessler reagent and measured using UV-Vis spectrophotometer with the wavelength of 500 nm. The urease of winged bean seeds was immobilized using the alginate matrix. The optimization of urease-immobilized beads could be made through the variations of natrium alginate concentration and beads formation periods in solution CaCl2. Characterization free and immobilized urease were made using the variations of urea substrate concentration, pH, temperature, and also the repeated utilization of immobilized urease. Winged bean seeds are rich with essential amino acid, such as leucine, isoleucine, histidine, phenylalanine, and valine. The urease obtained from the winged bean seeds had the optimum activity in the germination period of 8 days. The urease immobilization showed the optimum condition in the natrium alginate concentration of 5% (w/v) and beads formation period in solution CaCl2 for 60 minutes. The characterization results of free urease and immobilization had the optimum condition at the urea substrate of 0.2 M, and pH 7. Free urease had the optimum temperature of 35 oC, while the immobilized urease had the optimum temperature of 40 oC. The immobilized urease had the utilization stability up to 5 times with the relative activity of 48%. The EDX analysis results showed that the alginate did not contain N, while alginate urease beads contained N as much as 12%.
Immobilization of Urease from Psophocarpus tetragonolobus L. DC. using Natrium Alginate Supporting Matrix Zusfahair, Zusfahair; Ningsih, Dian Riana; Lestari, Puji; Bilalodin, Bilalodin; Aryanti, Eva; Muslihah, Niken Istikhari
Molekul Vol 19 No 1 (2024)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2024.19.1.7335

Abstract

Urease is an enzyme that has the role to hydrolyzes urea into ammonia and carbon dioxide. Immobilization is one of the most efficient strategies to improve its activity recovery and properties of urease. This research started with the germination of winged beans for 8 days. The winged bean was extracted by grinding using a mortar and pestle and then added with phosphate buffer at pH 7. The solution was homogenized using a stirrer and then centrifuged in cold conditions so that an extract of urease was obtained. Urease extracts were immobilized using a chitosan-supporting matrix. Optimization of the immobilization process of urease extract includes the concentration of chitosan and sodium tripolyphosphate (TPP) and contact time. The obtained was free and immobilized urease activities then tested using the Nessler method and measured using a UV-Vis spectrophotometer with a wavelength of 500 nm. The obtained data were then statistically tested using ANOVA. Urease-chitosan beads were further tested in repeated use and analyzed with SEM-EDX (Scanning Electron Microscopy-Energy Dispersive X-ray). The results showed that the optimum conditions for making urease-chitosan beads were a concentration of 4% (w/v), 2.5% (w/v) TPP, and 60 minutes of contact time, resulting in an activity value of 15.076 U/mL, which can be used 5 times with 46% activity from the initial activity. The EDX analysis results after the addition of the enzyme showed atom composition changes leading to increasing carbon and nitrogen contents. The existence of phosphor showed that TPP was a chitosan cross-link compound. Keywords: Chitosan, immobilization, TPP, urease, winged bean
The Synthesized-Hydroxyapatite Powder from Anadara Granosa Shells using Deposition Time Method for Biomedical Applications Sunardi, Sunardi; A’yun, Nidha Aulia Qurrata; Dari, Qorinah Wulan; Aminuddin, Jamrud; Bilalodin, Bilalodin; Praktino, Budi; Yulianti, Evi; Utomo, Agung Bambang Setio; Sari, Kartika
Jurnal Ilmu Fisika Vol 16 No 1 (2024): March 2024
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.16.1.88-96.2024

Abstract

Hydroxyapatite (HAp) powder, one of the biomaterials derived from natural sources, could be used in biomedical applications. In this research, the synthesized-HAp powder from Anadara Granosa shells as raw materials had a high calcium carbonate content with variations in deposition time using the precipitation method. Variations of deposition time used were 0 (S0), 24 (S24), and 48 (S48) hours. Fourier Transform Infrared (FTIR), X-Ray Diffractions (XRD), and Scanning Electron Microscopy (SEM) were used to investigate the chemical structure, phase analysis, and morphology of the synthesized HAp powder. FTIR results of the S0, S24, and S48 showed that the functional groups ,  and were formed at variations in the deposition time. The XRD results showed that the smallest of crystallite size of S48 was 26.03 nm, and the crystallinity degree of S24 was 38.74%. The grain dispersity of the synthesized-hydroxyapatite powder from SEM results were uniform, agglomeration, and spherical, irregular shape. The Ca, P, Mg, and Si compositions were shown in the synthesized-hydroxyapatite powder. The deposition time affects the synthesized-Hydroxyapatite (HAp) powder from the Anadara Granosa shell, and it is a potential raw material for biomedical applications.
Investigation on electron contamination of LINAC at different operating voltages using particle heavy ion transport code system (PHITS) Bilalodin, Bilalodin; Haryadi, Aris; Sardjono, Yohannes; Kasesaz, Yaser
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 11 No 1 (2022): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v11i1.11929

Abstract

Research has been carried out to investigate the occurrence of secondary electron contamination in a linear accelerator (LINAC) machine. The research was conducted in a simulation using a Monte Carlo-based simulator, namely Particle and Heavy Ions Transport code System (PHITS). The simulation of the occurrence of secondary electron contamination was carried out based on the model of the LINAC Electa head that is operated at voltages of 6, 8, 10, 15, 18, and 25 MV, using a field area of 10 X 10 cm and SSD 100 cm. The simulation results show that electron contamination occurs due to the interaction of X-ray photons with the components of the LINAC head, namely the primary collimator, flattening filter, and secondary collimator. The secondary electron contaminants generated by the LINAC head components spread through the water phantom. The higher the operating voltage, the higher the secondary electron flux produced. The secondary electron contamination dose calculated in the water phantom shows that the higher the LINAC voltage, the higher is the dose received in the phantom.
Optimization and Characterization of Urease Immobilization from Red Lentil Seeds (Lens culinaris) Using Chitosan zusfahair, zusfahair; Ningsih, Dian Riana; Bilalodin, Bilalodin; Fatoni, Amin; Luthfia, Adilla; Purwati, Purwati; Muslihah, Niken Istikhari; Apriliadina, Inessa Putri
Molekul Vol 20 No 2 (2025)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2025.20.2.13134

Abstract

ABSTRACT. Urease is an enzyme that plays a vital role in catalyzing the hydrolysis of urea into ammonia (NH3) and carbon dioxide (CO2). This study focuses on the isolation of urease from red lentil seeds, followed by its immobilization. The objective of this research is to optimize and characterize urease that has been immobilized using chitosan and activated with glutaraldehyde. Red lentil seeds were processed with a mortar and pestle at low temperatures (4 °C) to obtain a crude enzyme extract, which was then concentrated using 50% acetone (P50) prior to immobilization. The optimization process for P50 urease immobilization involved assessing various factors, including chitosan concentration, glutaraldehyde concentration, temperature, and the immersion duration in glutaraldehyde. The findings revealed that the optimal conditions for immobilizing P50 urease were achieved at a chitosan concentration of 0.75%, with a 2% glutaraldehyde soak at 25 °C for 2 hours, resulting in an enzyme activity of 7.042 U/g. The immobilized P50 urease demonstrated the ability to be reused up to 7 times while maintaining 51% of its initial activity. Scanning Electron Microscopy (SEM) analysis indicated morphological changes in the beads after the addition of glutaraldehyde and the enzyme, shifting from a rounded to an irregular shape. Additionally, Fourier Transform Infrared Spectroscopy (FTIR) analysis identified C-N and C=N peaks, confirming the successful incorporation of glutaraldehyde. Keywords: immobilization, red lentil seeds, glutaraldehyde, chitosan, urease
Co-Authors A Arifin Abdullah Nur Aziz Abdullah Nur Aziz Agung Bambang Setio Utomo AMIN FATONI Aminuddin, Jamrud Aminuddin, Jamrud Apriliadina, Inessa Putri Arief Hermanto Arief Hermanto Arief Hermanto Arifin, A Aris Haryadi Aris Haryadi Aris Haryadi, Aris Aryanti, Eva A’yun, Nidha Aulia Qurrata Bejo Haryanto Dari, Qorinah Wulan Dian Riana Ningsih Dwi Satya Palupi Evi Yulianti Farzand Abdullatif Gede Bayu Suparta Jamrud Aminuddin Jayawarsa, A.A. Ketut Kartika Sari Kasesaz, Yaser Kusminarto Kusminarto Kusminarto Kusminarto Luthfia, Adilla Mario, Aloysius Muhtar Effendy Mukhtar Effendi Mukhtar Effendi Mukhtar Effendi Muslihah, Niken Istikhari Nuraini, Aprilia Nafi Nurhayati Nurhayati Nurhayati Nurhayati Pakhrur Razi Praktino, Budi PUJI LESTARI Purwati Purwati R Farzand Abdullatif R. A. Saputro Salsabila, Faizah N. Sehah Sehah Setiawan, Ely Sri Yuniarti Sugito Sugito - Sulistyowati, Aris Sunardi - Sunardi Sunardi Sunardi Sunardi Sunardi Sunardi W Widanarto Widiyani, Agustina Wihantoro Wihantoro Wihantoro Wihantoro Yaser Kasesaz Yohannes Sardjono Yohannes Sardjono Yohannes Sardjono Yohannes Sardjono Yohannes Sardjono Yohannes Sardjono Zarah Irayani Zaroh Irayani Zusfahair Zusfahair