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All Journal Menara: Jurnal Teknik Sipil Journal of Technomaterial Physics Jurnal IPTEK Bagi Masyarakat IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Hasanah, Moraida
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Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation

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Pengaruh Variasi Temperatur Sumber Panas Terhadap Temperatur Udara Dalam Heater Mesin Stirling Siregar, Zufri Hasrudy; Jufrizal; Hasanah, Moraida; Muhammad Dendy Agusdiandy
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 1 (2022): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (530.348 KB) | DOI: 10.56862/irajtma.v1i1.1

Abstract

This research is focused on testing the heat transfer rate from the heat source to the Stirling engine heater. The test was carried out on the Stirling engine heater as a cylindrical tube. This study aims to determine the effect of variations in the heat source's temperature on the heater's air temperature. This test was carried out on a Stirling engine with a gamma-type mechanical configuration. The heat source temperature varied in 3 categories, namely between 860-900℃ (I), 780-850℃ (II), and 710-779℃ (III). there were 3 temperature positions measured, namely the temperature of the heat source, the temperature of the outer wall of the heater, and the temperature of the air in the heater. The fuel used for the heat source is liquefied petroleum gas (LPG). The research results for the heat source temperature in categories I, II, and III resulted in the average temperature on the outside heater wall being 729.8°C, 659.6°C, and 591.3°C, respectively. While the average air temperature in the heater for categories I, II, and III, respectively, is 201.7°C, 130.1°C, and 114.8°C. The 3 variations of heat source temperature show that the given heat source temperature value is very influential and directly proportional to the temperature inside the heater.
Pengaruh Penggunaan Smartphone terhadap Prestasi Akademik dan Keterampilan Sosial Siswa Sekolah Dasar: Studi Kasus di UPTD SDN 10 Desa Bangun Sari Manurung, Fadillah Aulia Rahma; Padriansyah, Adjie; Sitorus, Eka Rizky Ananda; Hasanah, Moraida; Saleh, Khairul
Jurnal IPTEK Bagi Masyarakat Vol 4 No 1 (2024)
Publisher : Ali Institute of Research and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/jibm.v4i1.907

Abstract

Penelitian ini mengkaji secara mendalam pengaruh penggunaan smartphone terhadap prestasi akademik dan keterampilan sosial siswa sekolah dasar. Dengan menggunakan pendekatan mixed- method, studi ini melibatkan 200 siswa kelas 4-6 di UPTD SDN 10 Desa Bangun Sari. Hasil menunjukkan korelasi positif yang signifikan antara penggunaan smartphone yang terstruktur dengan peningkatan prestasi akademik (r = 0.42, p < 0.01), terutama dalam mata pelajaran yang memanfaatkan aplikasi pembelajaran interaktif. Namun, penggunaan berlebihan (>4 jam/hari) berkorelasi negatif dengan prestasi akademik (r = -0.38, p < 0.05) dan keterampilan sosial (r = - 0.33, p < 0.05). Analisis kualitatif mengungkapkan bahwa siswa yang menggunakan smartphone secara terarah untuk pembelajaran menunjukkan peningkatan motivasi belajar dan kemampuan berpikir kritis. Keterampilan sosial siswa menunjukkan pola yang serupa, dengan penggunaan moderat (1-2 jam/hari) tidak menunjukkan dampak negatif signifikan. Penelitian ini menyoroti pentingnya pengawasan orang tua, peran guru dalam integrasi teknologi, dan implementasi kebijakan sekolah yang mendukung penggunaan smartphone secara bijak untuk mengoptimalkan manfaatnya dalam pendidikan.
Analisis Kebutuhan Air Bersih PDAM Tirta Kualo di Kecamatan Datuk Z, Fynnisa; Irwansyah, Muhammad; Hasanah, Moraida; Siregar, Zuraidah; P, Sophia Az Zahra; Aprilia, Risma
Menara: Jurnal Teknik Sipil Vol. 19 No. 1 (2024): Menara : Jurnal Teknik Sipil
Publisher : Teknik Sipil, Fakultas Teknik Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jmenara.v19i1.36029

Abstract

Water is one of the most vital sources of livelihood for all living things on earth. However, not all people have the ability to process water. Datuk Bandar District is one of the areas that has a large number of residents and facilities for schools, offices and other public facilities. In this study, we analyze the demand for domestic and non-domestic clean water in Datuk Bandar District for the next 20 years by projecting the need for population growth until 2041 based on data from the Central Statistics Agency. The method used in this study is the method of arithmetic, geometry, and least square. From the results of the analysis, the projected population of Datuk Bandar Subdistrict in 2041 using the geometric method is 81,670 people and the projected clean water needs of 85,105 l/second, while for now the production capacity of PDAM Tirta Kualo for Datuk Bandar Subdistrict is in WTP II service, namely of 90 l/sec. so that until 2041 the need for clean water for Datuk Bandar District is still fulfilled.
Effectiveness of Ozone Plasma Technology in Enhancing the Survival of Gourami (Osphronemus goramy) Fish Eggs Zahar, Intan; Sari, Dian Puspita; Hasanah, Moraida; Z, Fynnisa
Journal of Technomaterial Physics Vol. 7 No. 1 (2025): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v7i1.19860

Abstract

The gourami (Osphronemus goramy) fish is a freshwater fish commonly found in Asia and widely cultivated by fish farmers or local inhabitants. The survival rate of gourami fish from egg to larva and juvenile stages is very low, at approximately 50%. Several factors, such as unstable environmental conditions, poor water quality, and fungal growth on the eggs, cause this. Typically, synthetic medications or natural materials such as betel leaves and others are used to improve gourami fry's survival rate. In this study, the researchers attempted to apply ozone plasma technology dissolved in water to observe the egg hatchability of gourami fish. This study aims to apply technology in fisheries and aquatic sciences. The results of the study show that ozone technology can be applied to observe larval survival, with the highest survival rates found in the 10-minute and 15-minute ozone treatments, both achieving 100% hatchability, with larval survival rates of 86.67% and 96.66%, respectively.
Co-Authors Aprilia, Risma Dian Puspita Sari Jufrizal Jufrizal Khairul Saleh Manurung, Fadillah Aulia Rahma Muhammad Dendy Agusdiandy Muhammad Irwansyah, Muhammad P, Sophia Az Zahra Padriansyah, Adjie Siregar, Zufri Hasrudy Siregar, Zuraidah Sitorus, Eka Rizky Ananda Z, Fynnisa Zahar, Intan