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All Journal IJEEM - Indonesian Journal of Environmental Education and Management Journal of Training and Community Service Adpertisi JURNAL PARADIGMA: Journal of Sociology Research and Education International Journal of Health Sciences Journal of Innovative and Creativity JTT: Journal Teknik Dan Teknologi
Risa Bernadip Umar
Teknik Mesin, Fakultas Teknik, Universitas Pejuang Republik Indonesia, Indonesia
Humanities Decision Sciences, Operations Research & Management Dentistry Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Mathematics Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Pengaruh Ukuran Venturi Karburator Terhadap Kinerja Mesin Honda Supra X Muh Fadli; Risa Bernadip Umar; Ramli
Journal Teknik Dan Teknologi  Vol. 2 No. 01 (2025): Desember
Publisher : Journal Teknik Dan Teknologi 

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Abstract

The use of motorcycles is currently increasing very rapidly. The impact is that fuel consumption is also increasing. Motorcycle technology is increasingly advanced and developing, from 2-stroke engines to 4-stroke engines, from carburetor fuel systems to injection. Motorcycles still use 2-stroke engines and carburetor systems. Inside the carburetor there is a venturi hole/pipe which has a very large effect on engine speed and fuel consumption according to the size of the venturi. From this background, an analysis of the effect of venturi size on fuel consumption can be carried out. The study was conducted with variations in carburetor venturi sizes of 18.3 mm, 18.8 mm and 22.8 mm with an engine speed of 4000 rpm (54 km / h) and premium fuel. Testing was carried out by measuring and recording the time of fuel consumption, then analyzing the standard venturi, enlarging and reducing the venturi diameter. The results of each carburetor venturi diameter on fuel consumption are each 18.3 mm venturi is 8.48 minutes, on the 18.8 mm venturi (standard) is 7.14 minutes and on the 22.8 mm venturi is 6.15 minutes. So that the reduction in the diameter of the carburetor venturi can reduce fuel consumption by 18.77% without reducing vehicle performance.
The Influence of Ecological Knowledge And Locus of Control Over Pro-Environmental Student Behavior In The Urban Area of Makassar Umar, Risa Bernadip
International Journal of Health Sciences Vol. 3 No. 4 (2025): IJHS : International Journal of Health Sciences
Publisher : Asosiasi Guru dan Dosen Seluruh Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59585/ijhs.v3i4.1079

Abstract

Environmentally conscious or pro- environmental behavior Behavior is an important factor in maintaining environmental sustainability in urban areas. Students, as the younger generation, have a strategic role in shaping environmentally friendly behavior. Ecological knowledge and psychological factors such as locus of control of control is thought to influence this behavior. This study aims to analyze the influence of ecological knowledge and locus of control. of control over pro- environmental This study investigated student behavior in the urban area of Makassar. The study used a quantitative design with a cross-sectional approach. The study sample of 120 high school students was selected using a stratified sampling technique. random sampling. Data were collected through a structured questionnaire and analyzed using multiple linear regression. The results showed that ecological knowledge (β = 0.41; p < 0.001) and locus of control (β = 0.36; p < 0.001) has a significant effect on pro- environmental Behavior. Simultaneously, these two variables explain 48% of the variation in students' environmentally conscious behavior. It was concluded that increasing ecological knowledge and strengthening internal self-control can improve environmentally friendly behavior in students in urban areas.
Co-Authors A, Adhyatma Alhabsy, Gina Audina Andi Nursinah ARDIANSYAH ARDIANSYAH Aripa, Lusyana Betan, Abu Bakar Bunga, Ruth Bunga Claartje, Masrikat Maya Diana Dunggio, Abdul Rivai Saleh Hartono Hartono Hoda, Ferdinandus Suban Husain, Fahrisal Idhan, Muhammad Arif Indri Erwhani Lewar, Emanuel Suban Bala Mahoklory, Serly Sani Muh Fadli Muslimin B Muslimin B Muslimin B, Muslimin B Nonis Nonis Nursinah, Andi Nursinah, Nursinah Oktria Veni Rafiuddin, Rafiuddin Ramli Ramli Romi Mesra Ruagadi, Henry A. Sahalessy, Yona C. Siti Nuryani, Siti Suharto Suharto Tahir G, Muhammad Titin Kuntum Mandalawati Tri Wahyuni Utomo, Andri Wahyu Yakobus, I Ketut Zuriani Rizki