Judul: Kadar Vfa Dan Total Bakteri Pada Sekum Itik  Lokal Jantan Yang Diberi Berbagai-Tarap  Kayambang (Salvinia Molesta) Dalam Ransumnya
Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh salvinia molesta trhadap konsentrasi volatile fatty acid (VFA) total dan total bakteri pada sekum itik lokal jantan. Ternak yang digunakan dalam penelitian ini adalah 120 ekor itik lokal jantan umur 4 minggu dan dipelihara sampai umur 8 minggu.
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Judul: Mutu Fisik Daging Itik Lokal Akibat Pelayuan Pada Suhu Ruang Dan Suhu Dingin
Abstrak: Penelitian ini dilakukan di Laboratorium Teknologi Pasca Panen, Balai Penelitian Ternak Bogor, sejak tanggal 22 April 1986 sampai dengan tanggal 30 April 1986. Tujuan penelitian ini adalah untuk mengetahui pengaruh pelayuan terhadap sifat-sifat fisik (daya iket air, pH dan keempukan) daging itik petelur lokal. Materi penelitian yang digunakan adalah 60 ekor itik betina lokal. Dari jumlah tersebut dibagi menjadi enam kelompok secara acak. Perlakuan yang digunakan yaitu pelayyan pada suhu ruang (26 (26°-28°C) dan pelayuan pada suhu dingin (15°-18°C), masing- masing pelayuan dilakukan selama lime jam. Penelitian disusun berdasarkan Rancangan Acak Kelompok dengan polaSplit-Plot 6X2, terdiri dari enam faktor lama pelayuan dan dua faktor suhu, untuk perubahan nilai pH dan keempukan daging itik. Daya ikat air daging itik dianalisa dengan mengguna- kan pole Spit-Plot 4X2, terdiri dari empat faktor lama pelayuan dan dua faktor suhu. Deri hasil anelisa statistik didapatkan bahwa pelayuan mem- berikan pengaruh sangat nyata (P/0.01) terhadap perubahan nilai pH. Suhu tempat pelayuan tidak memberikan pengaruh nyata. Sesaat se- telah dipotong nilai pH daging 6.65, setelah tiga sampri empat iem dilayukan dicapai pH terendah 6.16. Daya ikat air daging itik nyata (P0.05) dipengaruhi oleh lama pelayuan, tetapi suhu tempat pelayuan tidak memberikan pengaruh nyata. Daya ikat air daging itik sesaat setelah dipotong rata-rata 39.94 persen sedangkan setelah dilayukan selama lima jam rata-rata menurun menjadi 33.01 persen. Lama pelayuan dan suhu tempat pelayuan tidak memberikan pe- ngaruh nyata terhadap keempuken daging itik lokal setelah dilayu- kan sampai lima jam. Interaksi antara suhu dan lama pelayuan tidak memberikan pe- ngaruh nyata terhadap perubahan nilai pH, daya ikat air dan keem- puken daging itik petelur lckel…
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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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