Judul: Nilai nutrisi pakan berserat kasar tinggi yang difermentasi dengan mikroba asal tanah
Abstrak: Limbah pertanian dan perkebunan tergolong sebagai pakan bermutu rendah, sehingga membutuhkan pengolahan untuk meningkatkan penggunaannya. Suatu pendekatan baru dengan teknologi (pengolahan) yang tepat guna diantaranya adalah bioproses dengan pemilihan mikroba yang tepat namun hemat biaya dan praktis. Dalam penelitian ini digunakan mikroba tanah khususnya kapang. Penelitian ini dilakukan di Laboratorium Ilmu Nutrisi dan Makanan Ternak, dan Laboratorium Ruminologi, Fakultas Peternakan, Institut Pertanian Bogor dari bulan September sampai dengan Desember 1993. Tujuan penelitian ini adalah untuk mengetahui pengaruh penggunaan mikroba tanah khususnya kapang sebagai inokulan dalam meningkatkan nilai nutrisi pakan serat asal limbah pertanian dan perkebunan secara in vitro dan in sacco. ....
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Judul: Ensilase Rurnput Gajah Dengan Bakteri Asam Laktat dan Enzim Selulolitik serta Suplementasi Seng dan Probiotik untuk Mernacu Aktivitas Mikroorganisme Rumen
Abstrak: Pemanfaatan pakan ternak sering terbentur pada masalah kualitas pakan yang berbasiskan hijauan. Pakan yang lazim digunakan tidak mampu memenuhi kebutuhan energi, protein dan seng untuk ternak sehingga diperlukan sentuhan teknologi untuk dapat meningkatkan nilai guna pakan. Penelitian ini dirancang untuk mengetahui pengaruh suplementasi silase rumput gajah, probiotik dan garam Zn-asam lemak tak jenuh untuk kebutuhan ternak. Penelitian ini dilaksanakan di Laboratorium Mikrobiologi Balai Rekayasa Mikroba dan Genetika Puslitbang Bioteknologi, Cibinong sejak Juli 2000 hingga Januari 2001.
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Judul: Thermal Characteristics and Dynamics of Tropical Cyclone over Western North Pacific Ocean: A Case Study of Typhoon Songda (Chedeng) 2011
Abstrak: The frequent occasion of Tropical Cyclone (TC) over Western North Pacific (WNP) Ocean lies from 10˚N to 26˚N and 121˚E to 170˚E. Sources of TC development come from warm ocean temperature where latent heat is released during condensation processes and subsequently concentrated in the boundary layer. Relative humidity at 850-700 hPa is responsible to produce the most intense storm. Meanwhile, weak vertical wind shear between 850-200 hPa is one of the dynamical factors that lead to the development of TC. Pressure level of 850-200 hPa is chosen to minimize the thermodynamic effect in the lower troposphere. Typhoon Songda (Chedeng in the Philippines) or TSC lasted from May 18th to 30th, 2011 and strengthened into powerful Super Typhoon stage between May 24th and 27th. Long curving track and the exhibition of all sequences of TC life cycle, TSC is then considered as an ideal case of TC. The objective of the study with case of TSC is to investigate the role of thermal characteristics and dynamics on TC intensity. The research is carried out by using Advanced Research of Weather Research and Forecasting model (WRF ARW model) version 3.3. Two domains are employed in the model. The first domain situate from 02˚N to 40˚N and 118˚E to 149˚E and cover spatial resolution () of 33.1 km. The second domain situate from 09˚N to 27˚N and 119˚E to 132˚E with of 11 km. Timestep of the model () is 120 seconds. The model is supported by the following physical parameterization, i.e., Yonsei University Scheme (YSU) in the boundary layer, Kain-Fritsch scheme (KF) in the cumulus, and WRF Single-Moment 3-class scheme in the microphysics. Initial meteorological condition prior to the formation of the cyclone is generated using WRF ARW standard-release model. Sensitivity of the model output is obtained from a selected single-parameter change scenarios, namely, 10 % to 20 % decrease and increase of wind shear initial data at 850-200 hPa, and by 10 % to 20 % decrease of relative humidity initial data at 850-700 hPa. The result showed that the negative correlations between wind shear and intensity are found in wind shear scenarios. Wind shears of 10 ms-1 which lead to strengthening of the wind intensity in the early period of Typhoon development are found in wind shear scenarios. The effect of wind shear changes on wind intensity is statistically significant in the 20 % wind shear scenarios. During mature stage, weak wind intensity occurred when wind shear increase as given in the WRF standard-release and the 20 % decreasing scenario. Different situation is found in the 20 % increasing scenario where wind shear tend to weak and lead to strong wind intensity at this stage. Meanwhile, the reduction of moisture supply at 850-700 hPa resulting from 20 % decreasing relative humidity play a major role in the weakening of wind intensity and reduces mechanical energy of the cycle process as much as 300 J kg-1.
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