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All Journal Jurnal Media Elektro : Journal of Electrical Power, Informatics, Telecommunication, Electronics, Computer and Control System Indonesian Applied Physics Letters Jurnal Pengabdian pada Masyarakat Kepulauan Lahan Kering Electrician : Jurnal Rekayasa dan Teknologi Elektro
Khoirunisa, Vera
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Physics Public Health Veterinary

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RANCANG BANGUN SISTEM PENGENDALI PH OTOMATIS PADA KOLAM BUDIDAYA IKAN NILA Mege, Christio Revano; Louhenapessy, Stevy Canny; Khoirunisa, Vera; Putra, Septia Eka Marsha; Simanullang, Astuti BP
Jurnal Media Elektro Vol 13 No 2 (2024): Oktober 2024
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jme.v13i2.18286

Abstract

Water quality is one of the important factors to increase the success of aquaculture production besides disease factors and fish seed quality. Water quality in auaculture ponds greatly affects the growth, survival, and production of tilapia. Several factors that affect water quality are the acidity level (pH). The maximum pH value ranges from 6.5 to 8.5. This study aims to design an automatic water pH control system in tilapia ponds. The water quality control system in fish ponds is often done manually so it is less efficient. The system is designed by combining a pH sensor pump, and solenoid valves using ESP32 microcontroller. When the pH sensor detects a pH value of less than 6.5 or more than 8.5, the system will automatically change the water. The test results in the pond showed that the system was able to respond with the respective rise time and settling time values, namely 1240s and 1380s. Based on these results, it can be concluded that the pH control system that was built can function according to the design.
Mesin Ekstrusi Filamen 3D Printer Sederhana Sebagai Alternatif Daur Ulang Limbah Botol Plastik dengan Kendali PID Harahap, Al Barra; Khoirunisa, Vera; Putra, Septia Eka Marsha
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 19 No. 2 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v19n2.2798

Abstract

DISEMINASI TEKNOLOGI IOT UNTUK PEMANTAUAN KONSUMSI DAYA LISTRIK DI SMA NEGERI 2 METRO SEBAGAI UPAYA EFISIENSI ENERGI Hasugian, Friska; Mege, Christio Revano; Khoirunisa, Vera; Putra, Septia Eka Marsha; Siregar, Sefrani IG; Suaif, Ahmad; Simatupang, Jodes Parasian
Jurnal Pengabdian pada Masyarakat Kepulauan Lahan Kering Vol. 6 No. 2 (2025): Volume 6 Nomor 2 Edisi Oktober 2025
Publisher : Pergizi Pangan DPD NTT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51556/jpkmkelaker.v6i2.534

Abstract

Peningkatan konsumsi energi listrik di lingkungan institusi pendidikan sering kali tidak terkontrol akibat kurangnya sistem pemantauan yang akurat, termasuk di SMA Negeri 2 Metro. Masalah utama yang dihadapi adalah keterbatasan pemahaman warga sekolah mengenai teknologi manajemen energi, yang berdampak pada ketidakefisienan penggunaan daya dan tingginya biaya operasional. Pengabdian kepada Masyarakat (PKM) ini bertujuan untuk mendiseminasi teori serta praktik pemantauan konsumsi daya listrik berbasis Internet of Things (IoT) sebagai solusi cerdas manajemen energi. Metodologi yang digunakan meliputi tahap persiapan perangkat, pemaparan materi teoretis, dan pendampingan praktik langsung (hands-on) dalam merakit sistem sensor arus berbasis ESP32 yang terintegrasi dengan platform MIT APP Inventor. Keberhasilan kegiatan ini diukur melalui analisis statistik pre-test dan post-test serta lembar observasi aktivitas siswa. Hasil pengabdian menunjukkan adanya peningkatan signifikan pada aspek kognitif peserta dengan kenaikan nilai rata-rata sebesar 80,7%. Selain itu, hasil observasi menunjukkan bahwa 86% siswa telah mampu merancang dan mengoperasikan sistem pemantauan listrik berbasis IoT secara mandiri. Kesimpulannya, kegiatan ini efektif dalam meningkatkan literasi teknologi dan mengubah perilaku penggunaan energi menjadi lebih terukur. Hasil ini sangat penting sebagai langkah awal transformasi SMA Negeri 2 Metro menuju smart school yang mengedepankan efisiensi energi berkelanjutan berbasis data digital.
Theoretical Study of the Stability of Acetylcholine Based on Molecular Orbital Theory using Density Functional Theory Febriana, Fitri Noor; Khoirunisa, Vera; Mark-Lee, Wun Fui; Rusydi, Febdian
Indonesian Applied Physics Letters Vol. 3 No. 1 (2022): Indonesian Applied Physics Letters - June 2022
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/iapl.v3i1.39777

Abstract

Some molecules in nature have a positive or negative charge. One such molecule is acetylcholine. Acetylcholine is a positively charged molecule that is responsible for Alzheimer's disease. This study evaluated acetylcholine through six simple molecules based on the ionization potential and the HOMO-LUMO gap obtained from the density functional theory calculation. The calculation results showed that the ionization potential and the HOMO-LUMO gap could explain the stability of acetylcholine and the six other molecules. As a result, acetylcholine has the same properties as five other simple molecules. Meanwhile, one other molecule has the opposite properties to acetylcholine.
Co-Authors Christio Revano Mege Febdian Rusydi Febriana, Fitri Noor Friska Hasugian Harahap, Al Barra Mark-Lee, Wun Fui Sefrani IG Siregar Septia Eka Marsha Putra Simanullang, Astuti BP Simatupang, Jodes Parasian Stevy Canny Louhenapessy Suaif, ahmad