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All Journal PIKSEL : Penelitian Ilmu Komputer Sistem Embedded and Logic The International Journal of Accounting and Business Society Jurnal Kesehatan Al-Irsyad Teknik: Jurnal Ilmu Teknik dan Informatika Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Jurnal Pengabdian Kepada Masyarakat Jurnal Kesehatan Masyarakat Indonesia (JKMI) KESPERA Journal of Biomedical Sciences and Health
Sonhaji
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Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Environmental Science Health Professions Immunology & microbiology Medicine & Pharmacology Neuroscience Nursing Public Health Social Sciences Veterinary Other

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Prototype Steam Plant sebagai Penyedia Sumber Daya Listrik pada Sistem Vessel To Grid (V2G) Ray Vargas; Sonhaji; Elly Kusumawati
JURAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 3 (2025): Desember : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i3.6721

Abstract

This research aims to develop and evaluate the performance of a steam plant prototype designed as an alternative source of electrical energy to support the Vessel to Grid (V2G) concept. Utilization of backup energy on ships is becoming important as electricity demand increases and demands for a more sustainable electrical system. This system relies on ESP32 microcontroller technology as a control center that functions to monitor and control several key parameters, including steam pressure, combustion temperature, boiler water level, and the generated electrical voltage. The research method used is an experiment with a static and dynamic testing approach. Static testing is carried out to measure the performance of main components such as the boiler, turbine, and generator separately, while dynamic testing focuses on evaluating the overall system by involving the integration of sensors and supporting actuators. The test data is then analyzed quantitatively to determine the system's response to variations in steam pressure, temperature, and other operational conditions. The results show that the steam produced by the boiler is able to rotate the turbine, thereby driving the generator to produce electricity. The maximum voltage achieved is 25.7 volts at a steam pressure of 50 psi. The highest energy conversion efficiency was recorded at 4%, while the lowest efficiency was 0.9%. These findings demonstrate that, despite its relatively low efficiency, the prototype can function as an alternative energy source and emergency backup solution. Thus, this research provides an initial contribution to supporting the implementation of the V2G concept through the development of a small-scale steam plant-based energy conversion system.
Efektivitas Terapi Aktivitas Kelompok Stimulasi Kognitif terhadap Fungsi Kognitif pada Lansia dengan Mild Cognitive Impairment di Panti Werdha Fery Agusman MM; Sonhaji; Moch Jamaluddin
Journal of Biomedical Sciences and Health Vol. 2 No. 1 (2025)
Publisher : Universitas Karya Husada Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34310/jbsh.v2.i1.189

Abstract

Mild Cognitive Impairment (MCI) merupakan kondisi penurunan fungsi kognitif yang memerlukan intervensi dini untuk mencegah progresivitas menuju demensia. Penelitian ini bertujuan menganalisis efektivitas Terapi Aktivitas Kelompok (TAK) Stimulasi Kognitif dalam meningkatkan fungsi kognitif lansia dengan MCI di Panti Werdha. Menggunakan desain quasi-experimental pre-post test with control group, penelitian melibatkan 60 lansia (30 intervensi, 30 kontrol) yang dipilih melalui purposive sampling. Kelompok intervensi menerima TAK Stimulasi Kognitif dua kali seminggu selama 8 minggu, sementara kelompok kontrol menerima aktivitas rutin panti. Pengukuran fungsi kognitif menggunakan Montreal Cognitive Assessment (MoCA). Hasil menunjukkan peningkatan signifikan skor MoCA pada kelompok intervensi (p<0.001) dibanding kontrol, dengan perbedaan mean 3.8 poin. TAK Stimulasi Kognitif terbukti efektif meningkatkan fungsi kognitif lansia dengan MCI dan potensial diimplementasikan dalam program rutin panti werdha. Keywords: stimulasi kognitif, terapi aktivitas kelompok, mild cognitive impairment, lansia, panti werdha   ABSTRACT Mild Cognitive Impairment (MCI) is a condition of cognitive decline requiring early intervention to prevent progression to dementia. This study aimed to analyze the effectiveness of Group Cognitive Stimulation Therapy (GCST) in improving cognitive function among elderly with MCI in nursing homes. Using a quasi-experimental pre-post test with control group design, the study involved 60 elderly participants (30 intervention, 30 control) selected through purposive sampling. The intervention group received GCST twice weekly for 8 weeks, while the control group participated in routine nursing home activities. Cognitive function was measured using the Montreal Cognitive Assessment (MoCA). Results showed a significant improvement in MoCA scores in the intervention group (p<0.001) compared to the control group, with a mean difference of 3.8 points. GCST proved effective in improving cognitive function among elderly with MCI and shows potential for implementation in routine nursing home programs. Keywords: cognitive stimulation, group activity therapy, mild cognitive impairment, elderly, nursing home
Co-Authors Akhdiyat, Randhi Andika Chandra Prasetyo Anom Susetyo AN , Haries Dwi Cahyani , Amelia Elly Kusumawati Fery Agusman MM Fitriani , Rizki Haries Anom Susetyo Aji Nugroho Imelzy Riana Potempu Jamaluddin Lestari , Sri Lidia M Dihongo Militia Christi Gloria Maindoka Moch Jamaluddin Nurkhayati Ray Vargas Rita Damayanti Rizki Kurniawan Shindi Hapsari Siti Khusnul Khotimah, Siti Khusnul Sri Hartati SRI LESTARI Sri Lestari Sri Mintarti Sudibyo , Toto Tina Lestari