Ditemukan 3 dokumen yang sesuai dengan query
Sjahrul Meizar Nasri
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The utilization of bricks made of styrofoam is expectedly able to be a soundproof for noise control and as a preventive action to reduce the steadily increasing prevalence of hearing loss. This study aimed to assess the use of sound absorption material in which styrofoam was utilized to reduce the noise exposure. In this study, fine aggregates (sand and styrofoam) were made with a mixture of cement with a composition of 1:4 and 1:6, also ...
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Depok: Universitas Indonesia, 2018
613 KESMAS 13:2 (2018)
Artikel Jurnal Universitas Indonesia Library
Lukman Aditya
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Rugi-rugi (losses) pada saat terbentuknya pasangan elektron-hole (e-h pairs) di dalam solar cell adalah timbulnya transmission-loss dan termalizationloss. Aplikasi konsep up & down conversion dibahas pada Tesis ini untuk mengurangi rugi ? rugi tersebut sehingga perbaikan efisiensi solar cell bias dicapai. Proses up-conversion melibatkan energi photon yang rendah dikonversi menghasilkan energi photon yang lebih tinggi untuk mengurangi transmission loss. Down-conversion melibatkan energi photon yang tinggi dikonversi menjadi energi photon yang lebih rendah untuk mengurangi thermalization ...
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Depok: Fakultas Teknik Universitas Indonesia, 2009
T40908
UI - Tesis Open Universitas Indonesia Library
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The book provides readers with a snapshot of recent research and industrial trends in field of industrial acoustics and vibration. Each chapter, accepted after a rigorous peer-review process, reports on a selected, original piece of work presented and discussed at the Second International Conference on Acoustics and Vibration (ICAV2018), which was organized by the Tunisian Association of Industrial Acoustics and Vibration (ATAVI) and held March 19-21, in Hammamet, Tunisia. The contributions cover advances in both ...
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Switzerland: Springer Cham, 2019
e20502534
eBooks Universitas Indonesia Library
