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All Journal ACTA VETERINARIA INDONESIANA INDONESIAN JOURNAL OF APPLIED PHYSICS Journal of Computer Networks, Architecture and High Performance Computing Construction and Material Journal Jurnal Natural Jurnal Kedokteran Hewan
Erwin E
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Energy Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience Physics Veterinary

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MENCIT (Mus musculus) GALUR BALB-C YANG DIINDUKSIKAN STREPTOZOTOSIN BERULANG SEBAGAI HEWAN MODEL DIABETES MELITUS e, Erwin; e, Etriwati; r, Rusli
Jurnal Kedokteran Hewan Vol 6, No 1 (2012): March
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21157/j.ked.hewan.v6i1.352

Abstract

Penelitian ini bertujuan mengetahui persentase peningkatan sel beta Langerhans pankreas yang mengalami nekrosis setelah diinduksistreptozotosin berulang.Tiga puluh ekor mencit jantan galur Balb-c, umur 12-14 minggu dengan bobot badan 30-40 g dikelompokkan menjadi 2kelompok perlakuan.Kelompok I (KI)diberikan pelarut streptozotosin danKelompok II (KII) diberikan streptozotosin dengan dosis 40 mg/kg bbdalam 50 mM natrium sitrat buffer pH 4,5.Semua perlakuan diberikan secara intraperitoneum selama 5 hari berturut-turut. Pemeriksaan kadarglukosa darah dan berat badan dilakukan pada hari ke-0, 7, 14, 21, dan 28 sesudah pemberian perlakuan. Hewan percobaan dari masing-masingkelompok dieutanasiasebanyak 2 ekor pada hari ke-7, 14, 21, dan 28 setelah pemberian perlakuan untuk pewarnaan Gomori. Data pengamatanberat badan adalah42,862,3 vs 32,787,4 gdan kadar glukosa darah puasa 95,892,5 vs 255,7787,60 mg/dl menunjukkan perbedaan yangsignifikan (P0,05) antara kedua kelompok perlakuan, sedangkan persentase sel beta yang mengalami nekrosis antara kedua kelompok perlakuan4,570,47 vs 64,114,10juga menunjukkan perbedaan yang signifikan (P0,05). Induksi dosis rendah streptozotosin secara berulang dapatmenyebabkan peningkatan persentase nekrosis sel beta Langerhans pankreas.
Optimization of Electric Power Flow Analysis Using the Gauss-Seidel Method in a Numerical Approach E, Erwin; Arifin, Ilham; Panjaitan, Septhia Eka Nurviranthy; Manik, Graceya Zagita; Marsela, Wiwi; Manurung, Janter Ricardo
Journal of Computer Networks, Architecture and High Performance Computing Vol. 7 No. 1 (2025): Article Research January 2025
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/cnahpc.v7i1.5382

Abstract

The availability of electrical energy is a fundamental requirement in modern society, supporting both daily life and industrial activities. To ensure efficient and reliable energy distribution, power flow analysis is critical. This analysis is grounded in Kirchhoff's laws, which serve as the foundation for understanding electrical circuits. Kirchhoff's Current Law (KCL) states that "the sum of electric currents entering and leaving a branch point is zero," while Kirchhoff's Voltage Law (KVL) asserts that "the sum of electromotive forces and potential drops in a closed circuit must equal zero." These laws guide the formulation and solution of equations describing power flow in electrical networks. To manage the complexity of these systems, the Gauss-Seidel method has emerged as an effective iterative technique for solving large systems of linear equations. In the context of power flow analysis, it calculates busbar voltages, active and reactive power flows, and other parameters, refining the results through successive approximations until convergence is achieved. Python is widely recognized as an ideal platform for implementing the Gauss-Seidel method due to its syntactic simplicity, flexibility, and extensive computational libraries. By leveraging Python, engineers can streamline computations and enhance the accuracy and reliability of power flow analyses. This combination of mathematical rigor and computational power not only ensures precise results but also facilitates the efficient management of complex electrical systems in modern power grids.
Efek Annealing Temperture Terhadap Sifat Magnetik Dan Struktur Multilapisan Tipis Cobalt-Samarium E, Erwin
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 01 (2013): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i01.1238

Abstract

Multilayer thin films of cobalt and samarium with the structur of 20[Co (4.2 nm)/Sm (3.8 nm)] have been fabricated using dc magnetron sputtering technique. Crystalline formation due to heat treatment of about 450oC of the sample is responsible for increase of coercivity from 300Oe to 3500 Oe. Due to heat treatment (annealing) of the sample caused the value of the magnetization of the sample decreases. This is due to the formation of none magnetic phase ininterfacial mixing between the layers as a result of inter-diffusion between the layers. Structural properties of as deposited and annealed samples was studied using transmission electron microscope (TEM). Electron diffraction patterns for as deposited sample exhibit diffused rings for samarium reflection however, for the annealed sample of about 450oC for 30 minutes produces sharp diffraction rings. This indicates that alloys of CoSm in interfacial mixing has a crystalline properties. By modifying the annealing temperature and time one can obtain higher value of coercivity of alloy of CoSm between the layers as one of therequirements for higher density magnetic recording media.
Co-Authors . Muttaqien Afif Yuda Kusuma Amin, M. Shofi'ul Amiruddin Amiruddin Anak Agung Gede Sugianthara Azhari Azhari Cut Erika Ramadhana Etriwati E Fadrial Karmil Faisal Mustafa Ghulam, Mirza Hamdani Hamdani Ilham Arifin M Nur Salim Manik, Graceya Zagita Manurung, Janter Ricardo Marsela, Wiwi Mulyadi Adam Muttaqien M P, Dadang Dwi Panjaitan, Septhia Eka Nurviranthy Razali Daud Rezeki Indah Sari Robert Faber Roby Luksmana Roslizawaty Roslizawaty Rusli r Rusli Rusli Sitarina Widyarini Sugito Sugito Syafruddin Syafruddin Teuku Fadrial Karmil Teuku Reza Ferasyi Teuku Zahrial Helmi Tri Wahyu Pangestiningsih Wolfgang Straka Zainuddin Zainuddin