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All Journal JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Metal Indonesia Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Sprocket : Journal of Mechanical Engineering Joule (Journal of Electrical Engineering) Journal of Industial Engineering and Technology JUVOTEK JURNAL: Jurnal Vokasi Teknik Journal of Golden Generation Abdimas
Gultom, Golfrid
Jurusan Teknik Mekanika Politeknik Teknologi Kimia Industri Medan Jl. Medan Tenggara VII , Indonesia
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Pengaruh Variasi Holding Time Terhadap Struktur dan Sifat Resistifitas dan Konduktifitas ZnO Dengan Doping Ni Gultom, Golfrid
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 6 No 1 (2024): Edisi Agustus 2024
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v6i1.1625

Abstract

This study aims to determine the effect of holding time variations on the structure, electrical and magnetic properties of ZnO doped with Ni. The fabrication of the samples used the solid state reaction method with a high speed shaker mill and continued with sintering at temperature of 900oC with variable holding time of 2, 4 and 8 hours. Samples doped with Ni have a hexagonal wurtzite polycrystalline structure. The holding time treatment causes a shift in the diffraction peak in the Ni-doped ZnO. This indicates a change in crystal parameters such as lattice parameters and crystal size. The crystal size of Zn0.97Ni0.03O increased with increasing holding time. The longer the holding time, the longer the diffusion that occurs from the heat effect, so that the small grains have sufficient time to combine (agglomerate) into large grains. The resistivity of Zn0.97Ni0.03O samples with holding time of 2, 4 and 8 hours was obtained increasing which caused a decrease in the conductivity value of Zn0.97Ni0.03O.
IMPLEMENTASI INTERNET OF THINGS (IoT) DALAM SISTEM PENGONTROLAN SUHU OTOMATIS BERBASIS MIKROKONTROLER PADA ALAT PROOFER UNTUK PENGEMBANG ADONAN ROTI DI UMKM PIZZA OEI OEI AND PATISSERIE Nelson Silitonga; Dian Kurnia; Elvri Melliaty Sitinjak; Sari Farah Dina; Abdillah; Golfrid Gultom; Harmileni; Rycce Sylviana Pratikha; Yanto; Muhammad Iqbal Harapan Muslim Siregar
Journal of Golden Generation Abdimas Vol. 1 No. 2 (2025): Desember : Journal of Golden Generation Abdimas
Publisher : PT. Lembaga Penerbit Penelitian Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65244/jgga.v1i2.398

Abstract

Implementation of Internet of Things (IoT) technology and microcontrollers as an automatic temperature control system on tools for proofing bread dough at the Oei Oei Pizza and Patisserie Micro, Small, and Medium Enterprise (MSMEs). The primary issue faced by partners was temperature instability during the dough fermentation process, leading to inconsistent product quality. The implementation method included problem identification, tool design and construction, implementation at partner locations, and mentoring and evaluation. The results of the activity showed that the tool can help IoT-based systems maintain stable fermentation temperatures, improve dough quality consistency, and increase production efficiency. This initiative also has a positive impact on increasing partners' capacity to utilize appropriate technology.
IMPLEMENTASI INTERNET OF THINGS (IoT) DALAM SISTEM PENGONTROLAN SUHU OTOMATIS BERBASIS MIKROKONTROLER PADA ALAT PROOFER UNTUK PENGEMBANG ADONAN ROTI DI UMKM PIZZA OEI OEI AND PATISSERIE Nelson Silitonga; Dian Kurnia; Elvri Melliaty Sitinjak; Sari Farah Dina; Abdillah; Golfrid Gultom; Harmileni; Rycce Sylviana Pratikha; Yanto; Muhammad Iqbal Harapan Muslim Siregar
Journal of Golden Generation Abdimas Vol. 1 No. 2 (2025): Desember : Journal of Golden Generation Abdimas
Publisher : PT. Lembaga Penerbit Penelitian Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65244/jgga.v1i2.398

Abstract

Implementation of Internet of Things (IoT) technology and microcontrollers as an automatic temperature control system on tools for proofing bread dough at the Oei Oei Pizza and Patisserie Micro, Small, and Medium Enterprise (MSMEs). The primary issue faced by partners was temperature instability during the dough fermentation process, leading to inconsistent product quality. The implementation method included problem identification, tool design and construction, implementation at partner locations, and mentoring and evaluation. The results of the activity showed that the tool can help IoT-based systems maintain stable fermentation temperatures, improve dough quality consistency, and increase production efficiency. This initiative also has a positive impact on increasing partners' capacity to utilize appropriate technology.
Analisis Efektifitas Kerja Mesin Roll Pencetak Lembaran Sheet Karet Menggunakan Overall Equipment Effectiveness (OEE) Naqasya asyrori sidabutar; Golfrid Gultom; Dejoi Irfian Situngkir; Fransnazoan Sitorus
Journal of Industrial Engineering and Technology Vol. 6 No. 1 (2025): Desember 2025
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Salah satu metode pengukuran kinerja dan efektifitas mesin yang digunakan adalah Overal Equipment Effectivennes (OEE). Metode pengukuran ini terdiri dari tiga faktor utama yang saling berhubungan yaitu Availability (ketersediaan), Performance (kemampuan), dan Quality (kualitas). Metode ini merupakan bagian utama dari sistem pemeliharaan yaitu Total Productive Maintenance (TPM). Untuk itu perlu dilakukan perhitungan terhadap nilai Overall Equipment Effectivennes (OEE) untuk mengetahui kinerja mesin penggilingan sheet tersebut dan menganalisis faktor faktor penyebab ketidakefektifan mesin yang mungkin yang terjadi. Dalam rangka pengumpulan data dan juga waktu untuk menganalisa dari tahap pertama sampai tahap selesai, maka dilaksanakanlah metode-metode kerja antara lain yaitu, Metode Tinjauan Pustaka dan Metode Studi Lapangan Berdasarkan pengamatan dan pengolahan data yang telah dilakukan maka dapat disimpulkan bahwa nilai efektivitas mesin roll sheeter tahun 2023 menggunakan metode Overall Equipment Effectiveness (OEE) yaitu nilai Availability 89%, nilai Performance ratio 95% dan nilai Quality rate 99%, sehingga nilai OEE yang dihasilkan adalah 83%. Nilai OEE rendah karena nilai availability tidak mencapai standar yaitu 90%. Nilai OEE yang diperoleh tidak sesuai dengan standar yang ditetapkan oleh Japan Institute of Plant Maintenance (JIPM) yaitu 85%
Co-Authors Abdillah Abdillah Abdul Azis Rahmansyah Ahmad Rizki Taufagus Darmadi, Herry Dejoi Irfian Situngkir Dejoi Irfian Situngkir Dejoi Situngkir Dejoy I. Situngkir Dian Kurnia Dian Kurnia Diman Raymond S. Tambunan Diman Raymond Tambunan Elvri Melliaty Sitinjak Fransnazoan Sitorus Ginting, Manan Harmileni Husainy, Husainy Irfian Situngkir, Dejoi Kurnia, Dian Manalu, Juan Presly Manan Ginting Marbun, New Vita M D Muhammad Iqbal Harapan Muslim Siregar Mustakim Mustakim Naqasya Asyrori Sidabutar Nelson Silitonga Nelson Silitonga Rycce Sylviana Pratikha Rycce Sylviana Pratikha Sari Farah Dina Sari Farah Dina Silitonga, Nelson Sitepu, Evi Christiani Sitinjak, Elvri Melliaty Situngkir, Dejoi Irfian Syabil, Irfan Tarigan, Enda Rasilta Yanto YANTO