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All Journal Automotive Experiences International Journal of Education and Digital Learning (IJEDL)
Sudirman Sudirman
University of Mataram, Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Education Electrical & Electronics Engineering Energy Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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Performance of Adsorbent from Calcium Carbide Residue to Reduce Exhaust Emissions of Two-wheeler Hendry Sakke Tira; Made Wirawan; Samsul Rahman; Ekarong Sukjit; Sudirman Sudirman
Automotive Experiences Vol 6 No 1 (2023)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.7827

Abstract

The performance of calcium carbide residue in reducing two-wheel exhaust emissions has been studied. To perform this experiment, the carbide residue was first converted into adsorbent and then mounted in the exhaust gas line. Two-wheeler used are vehicles commonly used among Indonesian motorcyclists. The test was carried out by varying the adsorbent dimensions and engine transmission. Engine emission tests and adsorbent performance investigations were performed both before and after the exhaust emissions made contact with the adsorbent. The results showed that upon direct contact with the carbide adsorbent, the emission of two-wheeled engines decreased. Carbon-based emissions were reduced significantly in the early stages of the experiment. Moreover, emissions reduction benefits are seen in all adsorbent and transmission engine configurations. The greater the adsorbent's surface area, the better the emission reduction. A significant emissions reduction is also achieved when the first engine transmission condition is applied compared to the neutral transmission. However, the adsorption efficacy declined over time in all research variations. The presence of channels and pores in the adsorbent, and the high temperature attained by the adsorbent, keep improving the adsorbent's adsorption capabilities. However, as saturation increases, the adsorbent's adsorption, and oxidation capability decline.
Principal Leadership Strategy in Improving the Quality of Graduates Relevant to the Tourism Industry in Vocational High Schools (SMK) Yunita Dahlia; Asrin Asrin; Dadi Setiadi; Sudirman Sudirman; Mansur Hakim
International Journal of Education and Digital Learning (IJEDL) Vol. 2 No. 4 (2024)
Publisher : Lafadz Jaya Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47353/ijedl.v2i4.135

Abstract

This research aims to describe the Principal's Leadership Strategy in Improving the Quality of Graduates Relevant to the Tourism Industry in Vocational Schools. This research was conducted using field research and used a descriptive-qualitative approach. Data collection techniques, observation, interviews, questionnaires, and documentation. Meanwhile, data analysis involves data collection, data reduction, data presentation, and drawing conclusions. Data validity checks use credibility, transferability, dependability, and confirmability tests as data validity checks. The results of the research show that the leadership strategy of vocational school principals in improving the quality of graduates relevant to the tourism industry is by (1) Increasing Competent Teacher Resources by appointing teachers whose academic qualifications are in accordance with the tourism department, facilitating tourism teachers to take competency training, improving performance tourism teachers in carrying out their main duties, increasing teacher welfare, and carrying out supervision of tourism teachers. (2). Implementation of learning carried out in vocational schools, namely adapting the school curriculum to the needs of DUDI "Link and Match" teaching materials consisting of tourism theory and practice, implementing tourism learning based on digital technology, providing adequate learning facilities in accordance with industry standards.
Co-Authors Asrin Asrin Dadi Setiadi Ekarong Sukjit Hendry Sakke Tira Made Wirawan Mansur Hakim Samsul Rahman Yunita Dahlia