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Tirtawaty Abdjul
Universitas Negeri Gorontolo
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Journal : Sainstek

 1 
PENGARUH KERAPATAN SAMPEL CAMPURAN SEKAM DAN DEDAK PADA KOEFISIEN REFLEKSI DAN KOEFISIEN TRANSMISI GELOMBANG KUSTIK Abdjul, Tirtawaty
Sainstek Vol 5, No 2, 2010
Publisher : Jurnal Sainstek

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Abstract

The method used in this study is the experimental method which aims to determine the influence of sample density husk and bran mixture to the coefficient of reflection and transmission coefficients of acoustic waves. The study was conducted at the State University Physics Laboratory using sample Gorontalo husk and bran mixture of different densities of fruit five. The results of data analysis showed that the density of the sample husk and bran mixture of strong influence of the reflection coefficient (r = 0,947 to r = 0,966) and the transmission coefficient (r = -0,962 to r = -0,999). This indicated that, the greater the density of the sample husk and bran mixture, the greater the intensity of the absorption fraction is produced which is statistically the influence level is indicated by the correlation on coefficient value of about r = 0,95 to r = 0,99. Based on the findings above, it can be concluded that the coefficient of reflection and transmission coefficient are influenced by the sample density husk and bran mixture. The greater the density of the sample husk and bran mixture, the greater the intensity of the absorption produced by the sample. Keywords: Density of Sample, Reflection Coefficient, Transmission Coefficient, Waves Acoustics
Co-Authors Abd Rahman Abdul Haris Odja Adeningsih, Sri Astika Asnianti A. Awila Asri Arbie Assagaf, Halisa Astin Lukum Aswan Bannang Awila, Asnianti A. Buhungo, Trisnawaty Junus Chairunnisah J Lamangantjo Citron S Payu Danial, Yulistia Anggraini Daud, Manda Nur Aisia Demanto, Fingki Aritsya Dewa Gede Eka Setiawan Dewi Diana Paramata Djano, Apriyansah Djola, Tita Aprianti Dunggio, Dian Pitaloka Dunggio, Sridiyanti S. Findra Dita Septiani Hippy Firayuniar Montu Frida Maryati Yusuf Gimnastiar, Asih Nurbaiti Hadju, Asri Febriyani Hali, Juliatin P. Halubangga, Fricilia Anggriyani Husin, Ikrawati R. I Made Hermanto Iman, Septian Halim Indriyani Bidara Kansil Inunu, Pinasti Jahja, Mohamad Julkifli Adam Kasim, Gita Fadilla Kohohon, Yulianti Kurniasari, Septiana Lanto Mohamad Kamil Amali Lasumbu, Indrawati Mahmud, Andini Pratiwi M. Mahmud, Laila Magfirah Mamonto, Moh. Reghi Masra Latjompoh Masri Kudrat Umar Masrid Pikoli Mentari Br Sembiring Meyko Adjilahu Modeong, Athir Mizhari Moh. Reghi Mamonto Mohamad, Wahyu Mu’zizat Mohi, Margareta Putri Moiyo, Yulani Mokoginta, Chindy Dahlia Muhammad Yunus Muhammad Yunus Muhammad Yusuf Muhammad Yusuf Mursalin Mursalin . Naki, Nadrah Pratiwi Nancy Katili Nova Elysia Ntobuo Novita Orab Nur Mustaqimah Nurfadlun Faradila Dalu Nurhadi Prayogo Sabia Nurhayati Nurhayati Nurhayati Nurhayati Nurmila Nurmila Nurmila Oktaviani, Indah Otoluwa, Sri Maulina Pakaya, Ismail Palari, Nurafni Dg. Paulutu, Merlinda Afriyani Polihito, Nurhalima Primayanti, Tria Purnawati, Pujijana Putri Ainun Mangkarto Rabiyanti B. Kamali Rahim, Nur Ain Rahma Ramadanti Yusuf Rahmawati Hadju Ranselengo, Denada Rintiany Monoarfa Ritin Uloli S.Payu, Citron Saaban, Indriani Saleh, Melisa Damayanti R. Samad Kadir Samawati, Alfandi Septiana Kurniasari Sidiki, Sri Amelia A. Sina, Sukmawati A. Siti Fatimah Sri Windi Akuba Sukmawati Sukmawati Supartin Supartin Supartin, Supartin Tita Aprianti Djola Waraga, Sri Susanti