Judul: Analisis lingkungan mikro dengan teknik computational fluid dynamics (CFD) pada kandang domba garut sistem tertutup di kandang penggemukan fakultas peternakan IPB
Abstrak: Cage has a very important role in accommodating all livestock activities as providing comfort and protection from environmental influences. Livestock will be able to develop and grow normally in good cage environment condition. Livestock development is influenced by the climate of the cage microenvironment such as air temperature, humidity, wind speed, and light intensity. This research aimed to analyze the distribution of temperature, humidity, wind speed and air flow patterns inside the cage with the fan turning on and off with a technique of Computational Fluid Dynamics (CFD). The parameteres which were observed included temperature, relative humadity (RH), air flow and irradiation with the uniform environmental conditions from 07.00 a.m. until 15:00 p.m. Then, the data obtained were analyzed and compared with simulation results using SolidWork 2009. The highest temperature inside the cage based on measurement was 33.33 °C at 12.00 p.m., with the simulation results using SolidWork 2009 up to 34.45 °C. Error of temperature based on measurement results with simulation results at 08.00, 12.00 and 15.00 were 5.24%, 2.83%, and 2.01%. pThe highest relative humidity based on measurements was 89.67% in the morning and evening, during the simulation up to 85.17% at 08.00 p.m. RH errors from the measurement results with simulations were 2.97%, 5.07%, and 3.93%. The highest wind speed from CFD simulation results was 1.90 m/sec at 15.00 p.m. The simulation results showed that the temperature level and RH when the fan was on and off were almost the same, with the difference about ± 0.01 °C, and the air movement had a difference of about 0.02-0.11 m/sec.
Keyword: CFD, Fattening cage, Garut sheep, Micro climate, Bogor Agricultural University

Judul: Analisis Lingkungan Mikro Dengan Teknik Computational Fluid Dynamics (CFD) pada Kandang Domba Garut Sistem Tertutup di Kandang Penggemukan Fakultas Peternakan IPB
Abstrak: Cage has a very important role in accommodating all livestock activities .1\Ifh as providing comfort and protection from environmental 'hi1-l.uences. Livestock will be able to develop and grow normally in good cage environment condition. Livestock development is influenced by the climate of the ~ge microenvironment such as air temperature, humidity, wind speed, and light j tensity. ~ This research aimed to analyze the distribution of temperature, humidity, "S!ind speed and air flow patterns inside the cage with the fan turning on and off ~ith a technique of Computational Fluid Dynamics (CFD). The parameteres ~hich were observed included temperature, relative humadity (RH), air flow and iradiation with the uniform environmental conditions from 07.00 a.m. until 15:00 l-m. Then, the data obtained were analyzed and compared with simulation results esing SolidWork 2009. "tI The highest temperature inside the cage based on measurement was 33.33 ~ at 12.00 p.m., with the simulation results using SolidWork 2009 up to 34.45 t . Error of temperature based on measurement results with simulation results at gg .OO, 12.00 and 15.00 were 5.24%, 2.83%, and 2.01%. pThe highest relative itmidity based on measurements was 89.67% in the morning and evening, during &., e simulation up to 85.17% at 08.00 p.m. RH errors from the measurement results with simulations were 2.97%, 5.07%, and 3.93%. The highest wind speed from CFD simulation results was 1.90 m/sec at 15.00 p.m. The simulation results showed that the temperature level and RH when the fan was on and off were almost the same, with the difference about ± 0.01 DC, and the air movement had a difference of about 0.02-0.11 m/sec.
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Judul: Sintesis 3-Benzoil-7-hidroksiflavon dari Resorsinol
Abstrak: Flavonoid is the most abundant naturally-occuring polyphenolic compound with C6-C3-C6 carbon skeleton. Flavones is a group of flavonoid having a broad bioactivity spectrum. In this experiment, 3-benzoyl-7-hydoxyflavone was successfully synthesized via 2-steps from resorcinol. In the first step, resorcinol was acetylated with AcOH/ZnCl2 producing resacetophenone with 89% yield. Subsequently, benzoylation and rearrangement of resacetophenone using 2 equivalent of benzoyl chloride and 7 equivalent of K2CO3 in acetone produced 3-benzoyl-7-hydroxyflavone with 62% yield. Synthesis of 3-benzoyl-7-hydroxyflavone from resorcinol provided evidence for new reaction mechanism of flavon formation without Baker-Venkataraman rearrangement proposed by several previous researchers. All products in this study has been characterized spectroscopically.
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