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All Journal Jurnal Pengabdian kepada Masyarakat Nusantara Jurnal Jaring SainTek JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Faraday: Journal of Fundamental Physics, Research, and Applied Science
Tamimah, Ni’matut
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Astronomy Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics Social Sciences

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Peramalan Nilai Rugi Daya Pada Serat Optik Glass Akibat Pengaruh Tekanan dan Suhu Berbasis Interpolasi Lagrange Tamimah, Ni’matut; Chitami Priawan Siregar, Aslam
Jurnal Jaring SainTek Vol. 5 No. 2 (2023): oktober 2023
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/zwb0z211

Abstract

A study has been carried out using SMS structured glass optical fiber (Singlemode-Multimode-Singlemode) as a pressure and temperature sensor to detect cracks in the highway structure. In that research, the methods used are experimental and simulation methods. The experimental method uses OTDR (Optical Time Domain Reflectometer), but the simulation method uses Lagrange interpolation. Next, two kinds of SMS structured glass optical fiber are used the multimode length of 6.5 cm and 7 cm at temperatures 470C dan 570C. Based on the experimental results, the SMS structured glass optical fiber with a multimode length of 7 cm has a better level of linearity than a multimode length of 6.5 cm, equal to 94.83% for 470C and 86,45% for 570C. As for the error of the power loss value that occurs, based on the experimental results on the simulation results for a multimode length of 7 cm on a glass fiber optic sensor with an SMS structure, it has an error smaller than a multimode length of 6.5 cm, which is 1.301% when it is measured on 570C. Therefore, the SMS structured glass optical fiber with a multimode length of 7 cm is more suitable for use as a pressure sensor.
Penyerahan Kolam Budidaya Lobster Air Tawar pada UMKM Kewanku Farm Sebagai Upaya Peningkatan Produktivitas : - Wardani, Dianita; Endro, Dimas; Julianto, Eko; Tamimah, Ni’matut; Luluk, Imah; H, Fitri; Budiana, Budiana; Rozan, Hafiz
Jurnal Pengabdian kepada Masyarakat Nusantara Vol. 6 No. 2 (2025): Jurnal Pengabdian kepada Masyarakat Nusantara Edisi April - Juni
Publisher : Lembaga Dongan Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55338/jpkmn.v6i2.6006

Abstract

Peluang terciptanya lobster air tawar sebagai komoditas perikanan semakin terbuka seiring dengan semakin populernya dikalangan pembudidaya dan konsumen, apalagi lobster air tawar ini pun mempunyai keunggulan bila dibandingkan dengan komuditas perikanan lainnya yang sudah berjalan. Usaha budidaya lobster masih ditemui beberapa kendala, diantaranya kematian akibat gagalnya proses molting, dan kematian akibat kanibalisme. Kanibalisme umumnya terjadi saat molting, hal ini terjadi karena pengerasan cangkang terlalu lambat. Sehingga pada kegiatan PkM ini diajukan kegiatan pengabdian kepada masyarakat untuk dapat membuatkan wadah atau bak kolam budidaya yang terdapat instalasi perpipaan yang mendukung serta menghemat lahan dan terdapat pencahayaan yang cukup. Pada kegiatan PkM ini dihasilkan Desain perpipaan yang digunakan pada desain perpipaan air bersih dengan peletakan pipa system pengaliran ke atas, system ini dipilih agar sirkulasi air bersih optimal pada kolam budidaya. Prototype bak pembudidaya dirancang dengan menggunakan 3 tingkat dari bahan kerangka besi hollow serta dinding terpal, hal ini dirasakan lebih sesuai dengan instalasi pada kolam budidaya yang membutuhkan lahan terbatas dan cocok digunakan untuk pembudidayaan lobster air tawar.
Characterization of RF Voltage and Self-Bias under Power Variations in 13.56 MHz RF Sputtering System Aprilia Dewi Ardiyanti; Siregar, Aslam Chitami Priawan; Tamimah, Ni’matut
Faraday: Journal of Fundamental Physics, Research, and Applied Science Vol. 1 No. 2 (2025): Faraday: Journal of Fundamental Physics, Research, and Applied Science
Publisher : Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/faraday.v1i2.13

Abstract

RF Sputtering has been widely used as a deposition system on thin films. This study examines the impact of input power on RF voltage and self-bias voltage in an RF Sputtering system operating at a frequency of 13.56 MHz. Power variations were carried out in the range of 50 to 150 Watts to observe the changes in voltage produced during the plasma formation process. The experimental results indicate a linear dependency between power and both voltages, with a coefficient of determination (R²) above 0.9 and slope values of 2.86 and 0.96 for the RF voltage and self-bias voltage, respectively. The observed linear correlation indicates that adjusting power regulation can be utilized as an effective control parameter for both voltages, enabling the production of uniform and high-quality thin film deposition.
Rekonfigurasi Antena Folded Dipole Mikrostrip Berbasis Laser Merah dan Microwave Multifunctional Analyzer (MMA) Siregar, Aslam Chitami Priawan; Pramono, Yono Hadi; Yudoyono, Gatut; Tamimah, Ni’matut
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 9 No. 2 (2025): November Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v9i2.4745

Abstract

With the increasing use of communication devices across various regions, antennas with stable signal performance are essential to ensure reliable information transmission. In this study, a microstrip folded-dipole antenna operating in the SHF band was developed using a reconfiguration mechanism based on a 650-nm red laser and metamaterial absorber (MMA). The initial antenna structure was designed and simulated in CST software with a target operating frequency of 9 GHz. Experimental results show that the antenna without a resonator exhibits an operating frequency of 13.77 GHz when the laser is off and 3.15 GHz when the laser is on. When integrated with the resonator, the operating frequencies shift closer to the simulation results, ranging from 15.75 GHz (laser off) to 7.02 GHz (laser on). The return-loss performance also improves with the implementation of the resonator. Without the resonator, the antenna achieves −33 dB return loss in laser-off mode and −34.15 dB in laser-on mode. With the resonator, the return loss values are −21.88 dB (laser off) and −26.61 dB (laser on). These findings indicate that the proposed configuration technique is applicable for outdoor Wi-Fi signal enhancement in the 5 GHz band and as a blind-spot sensing element for automotive radar systems.
Co-Authors Aprilia Dewi Ardiyanti Aslam Chitami Priawan Siregar, Aslam Chitami Priawan Chatarina Umbul Wahyuni Dianita Wardani Eko Julianto Endro, Dimas Gatut Yudoyono H, Fitri Luluk, Imah Rozan, Hafiz Yono Hadi Pramono