Judul: Kadar NH3 dan CH4 serta CO2 dari Petrnakan Broiler pada Kondisi Lingkungan dan Manajemen Peternakan yang Berbeda di Kabupaten Bogor
Abstrak: The development of broiler population may cause negative impact such as gases emission including of NH3, CH4, and CO2, for broiler, human and environment. The levels of NH3, CH4, and CO2 resulted from broiler house can be affected by microclimate condition. Information about the levels of NH3, CH4, and CO2 in broiler house in Bogor regency is still limited. The purpose of this research is to estimate the levels of NH3, CH4 dan CO2 inside and outside broiler houses at different environmental condition. This research was conducted on Bagus Farm that located in West Semplak, Kemang District, Bogor Regency (170 m above see level) and Ikhtiar Farm that located in Cikoneng Talang, Pamijahan District, Bogor Regency (520 m above sea level). This research was conducted during October until November 2010. The result shows that the levels of NH3, CH4, and CO2 in Bagus Farm was higher than Ikhtiar Farm. The level of NH3 is lower than standard of NH3 consisted in ambient air. The differentiation of NH3, CH4, and CO2 levels between Bagus Farm and Ikhtiar Farm can be influenced by some factors such as microclimate condition (temperature, humidity, and air velocity), housing management, feed nutrient, manure management and composition.
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Judul: Kadar H2S, NO2, dan debu pada peternakan ayam broiler dengan kondisi lingkungan yang berbeda di Kabupaten Bogor, Jawa Barat
Abstrak: The development of broiler chicken farms may cause negative impacts such as emissions include hydrogen sulfide (H2S) and nitrogen dioxide (NO2) and particles of dust. Environmental quality is very necessary for broiler chicken. The levels of gases and dust is affected by environmental condition. Information of the levels of H2S, NO2, and dust in broiler chicken farms in Bogor Regency has not been widely available. The purpose of this study was to assess the levels of H2S, NO2, and dust from broiler chicken farms with different environmental conditions. This research was conducted on Bagus Farms that located in West Semplak, Kemang District, Bogor Regency (170 above see level) and Ikhtiar Farm that located in Cikoneng Talang, Pamijahan District, Bogor Regency (520 above sea level). This research was conducted during October until November 2010. The result shows that the levels of H2S, NO2 and dust at two research sites were lower than basic standard of H2S, NO2 and dust consisted in ambient air. The level of H2S, NO2 and dust in Ikhtiar Farm that was lower than in Bagus Farm was caused by enviromental condition (temperature, humidity, wind speed and altitude), broiler chicken farm condition (roofing, the broiler chicken farm system) and condition around the broiler chicken farm (agriculture area and plants planted around broiler chicken farm). However, the further researches on emissions inventory from broiler chicken farms is needed to provide a comprehensive data of emissions from broiler chicken farms in Bogor Regency
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Judul: Algoritme LLL dan Aplikasinya dalam Pembongkaran Sistemkripto Knapsack Merkle-Hellman
Abstrak: LLL algorithm is an algorithm that can be used to determine an approximation of the shortest vector in a lattice. Size reduction algorithm is an important step of LLL algorithm. The LLL algorithm can be applied in many elds. This paper shows how LLL algorithm can be used in breaking one of the famous cryptosystem, namely the Merkle-Hellman knapsack cryptosystem. Merkle-Hellman knapsack cryptosystem is an asymmetric cryptosystem using the subset sum problem as the support of security. Subset sum problem can be transformed into the problem of determining shortest vector in a lattice, so that LLL algorithm can also be used to solve the subset sum problem. Since the subset sum problem can be easily solved by applying LLL algorithm, then the Merkle-Hellman knapsack cryptosystem can also be easily be destructed.
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