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All Journal Jurnal Natur Indonesia TELKOMNIKA (Telecommunication Computing Electronics and Control) JURNAL FISIKA Jurnal Matematika & Sains Journal of Engineering and Technological Sciences Ta'allum: Jurnal Pendidikan Islam Jurnal Otomasi Kontrol dan Instrumentasi Jurnal Ilmu Fisika Indonesian Physical Review Indonesian Journal of Electrical Engineering and Computer Science Physics Communication Prosiding SNAST Ta'allum: Jurnal Pendidikan Islam
Mikrajuddin Abdullah
Institut Teknologi Bandung
Religion Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Other

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Penggunaan Image Tracking untuk Pengukuran Sifat Mekanik pada Kertas Munir, Rahmawati; Rahmayanti, Handika Dany; Amalia, Nadya; Viridi, Sparisoma; Abdullah, Mikrajuddin
Jurnal Fisika Vol 9, No 1 (2019)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v9i1.19393

Abstract

Berbagai metode karakterisasi telah digunakan untuk memahami sifat mekanik bahan dengan menggunakan metode yang canggih atau metode paling sederhana. Pada penelitian ini dikembangkan metode sederhana untuk menghitung modulus elastis dengan menggunakan image tracking pada kertas A4 (100 g) yang membengkok dengan menerapkan prinsip balok cantilever. Metode ini menggunakan software video tracker 4.94 (Open Source) yang dapat dioperasikan dengan OS Windows. Preparasi sampel dilakukan dengan memotong kertas berukuran 16 cm x 5 cm. Pengambilan gambar dilakukan dengan menvariasikan sudut kelengkungannya pada sampel berbentuk persegi panjang (diasumsikan homogen). Profil lentur balok cantilever pada kertas difoto menggunakan kamera digital. Tracking koordinat dilakukan pada beberapa titik di setiap segmen sampel. Kebergantungan elastisitas terhadap parameter densitas dan penampang balok cantilever juga menjadi dasar dalam mengembangkan metode pengukuran ini. Data penampang dan kerapatan berdasarkan gambar profil lentur setiap bahan yang diperoleh dapat digunakan untuk menghitung modulus elastisitasnya. Hasil penelitian ini dapat berkontribusi pada pengembangan penelitian tentang pengukuran sifat mekanik bahan.
Metode Praktis Menentukan Arah Kiblat dan Koreksi Arah Kiblat Abdullah, Mikrajuddin
Ta'allum: Jurnal Pendidikan Islam Vol 5 No 2 (2017)
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan (FTIK) UIN Sayyid Ali Rahmatullah Tulungagung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21274/taalum.2017.5.2.209-222

Abstract

This paper explains a simple method used to determine the direction of Qibla or do the correction of Qibla direction in the mosque, mushola, or surau that already exist. The proposed method only utilizes the GoogleMap facility provided by Google. The approach is taken to draw a straight line from Ka’bah to the location where the mosque will be built. This Method is interesting to teach in Islamic high schools or Islamic education programs in colleges.
DRIED NATA DE COCO WITH WATER ABSORPTIVITY COMPETING SILICA GEL Rahmayanti, Handika Dany; Yuliza, Elfi; Amalia, Nadya; Abdullah, Mikrajuddin
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.383

Abstract

Nata de Coco (NDC)  is a network of cellulose fibers that traps abundant of water. If a freshly made NDC is dried to remove nearly all trapped water, we will get a very hygroscopic material. This material is potential for making water adsorber that might compete the well known silica gel. NDC was prepared using standard methods and its water absorption was investigated. Dried NDC was used in this study. For comparison, we also investigated the water absorption of several commercial NDC. To determine its business prospects, the water absorption of silica gel was also investigated. The results showed that dried NDC could absorb water vapor comparable to the absorption of commercial silica gel. This suggests that dry NDC has the potential as an alternative water vapor absorber in food packaging. The advantages of the NDC compared to silica gel are safer and environmentally benign, and easily decomposed.
Numerical Simulation of Tunneling Current in an Anisotropic Metal-Oxide-Semiconductor Capacitor Fatimah A. Noor; Ferry Iskandar; Mikrajuddin Abdullah; Khairurrijal Khairurrijal
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 10, No 3: September 2012
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v10i3.826

Abstract

In this paper, we have developed a model of the tunneling current through a high- dielectric stack in MOS capacitors with anisotropic masses. The transmittance was numerically calculated by employing a transfer matrix method and including longitudinal-transverse kinetic energy coupling which is represented by an electron phase velocity in the gate. The transmittance was then applied to calculate tunneling currents in TiN/HfSiOxN/SiO2/p-Si MOS capacitors. The calculated results show that as the gate electron velocity increases, the transmittance decreases and therefore the tunneling current reduces. The tunneling current becomes lower as the equivalent oxide thickness (EOT) of HfSiOxN layer increases. When the incident electron passed through the barriers in the normal incident to the interface, the electron tunneling process becomes easier. It was also shown that the tunneling current was independent of the substrate orientation. Moreover, the model could be used in designing high speed MOS devices with low tunneling currents.
Co-Authors A. Suhendi A.A. Ketut Agung Cahyawan W Agus Subagio Amalia, Nadya Andhy Setiawan Anrokhi, Mohamad Samsul Arif Surachman Arini Fitria Gunawan Aris Priatama Asifa Asri Bebeh Wahid Nuryadin Edy Supriyanto Edy Wibowo Elfi Yuliza Endah Rahmawati Euis Sustini Fatimah A. Noor Fatimah Arofiati Noor Ferry Iskandar Ferry Iskandar Fitrianingrum, Aufa Maulida Goib Wiranto Hasniah Aliah Hernawan Mahfudz Hery Sutanto Hwa, Lee Myong Ida Sriyanti Imastuti Imastuti Khairurrijal Khairurrijal Khairurrijal Khairurrijal Kikuo Okuyama Maharati Hamida Maman Budiman Maman Budiman Maman Budiman Mamat Rokhmat Masturi Masturi Mohamad Barmawi Muhammad Nuraliffudin Saputra Munir, Rahmawati Nadya Amalia Pepen Arifin Rahman, Dui Yanto Rahmawati Munir Rahmawati Rahmawati Rahmawati, Rahmawati Rahmayanti, Handika Dany Riri Murniati Riska Ekawita S Saehana Septia Mahen, Ea Cahya Septianto, Ricky Dwi Sparisoma Viridi Sukirno Sukirno Sutisna, S. Ulya, Naily