Judul: Uji sifat fisik pemalsuan pollard
Abstrak: Nowadays, the forgery of feedstuffs is a big problem in the feed industry, because of forgery can decrease the feed safety and quality that. The purposed of this research was to study more accurately the benefit of phisically characteristic to evaluate the quality of pollard. This experiment was conducted at feed Industry Laboratory and Feed Science and Technology Laboratory from March to April, 2007. A completely randomized Design with five treatments and four replications was used in this experiment.
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Judul: Uji sifat fisik pemalsuan Pollard
Abstrak: Pemalsuan bahan baku makanan ternak kerap kali dilakukan oleh penjual bahan baku skala kecil untuk memperoleh keuntungan yang lebih besar. Akibat dari pemalsuan bahan baku yang digunakan dalam menyusun ransum menyebabkan turunnya kualitas ransum dan keamanan ransum untuk ternak. Tujuan dari penelitian ini adalah untuk mengevaluasi kualitas fisik dari pollard yang telah dipalsukan dengan rnenggunakan sekam. Penelitian ini dilakukan di Laboratorium Industri Makanan Ternak dan Laboratorium Ilmu dan Teknologi Pakan, Departemen Ilmu Nutrisi dan Teknologi Pakan, Fakultas Peternakan, Institut Pertanian Bogor. Penelitian ini berlangsung dari bulan Maret sampai bulan April 2007. Penelitian ini menggunakan bahan baku pollard scbanyak 20 kg yang diperoleh dari PT. Bogasari dan sekam sebanyak 4 kg yang berasal dari Gunung Leutik, Bogor, Jawa Barat. Perlakuan yang diberikan pada pollard, yaitu: penambahan sekam 0% (PI), penambahan sekam 5% (P2), penambahan sekam 10% (P3), penambahan sekam 15% (P4) dan penambahan sekam 20% (P5). Peubah yang diamati adalah kadar air, ukuran partikel, berat jenis, kerapatan tumpukan, kerapatan pemadatan tumpukan dan sudut tumpukan. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 4 ulangan. Data yang diperoleh dianalisis dengan Sidik Ragam (ANOVA) dan apabila terdapat perbedaan dilanjutkan dengan uji Kontras Orthogonal. Hasil penelitian menunjukkan bahwa penambahan sekam dalam pollard berpengaruh sangat nyata (p<0,01) terhadap kenaikan ukuran partikel dan sudut tumpukan. Sebaliknya, penambahan sekam dalam pollard berpengaruh sangat nyata (p<0,01) terhadap penurunan nilai berat jenis. Kadar air, kerapatan tumpukan dan kerapatan pemadatan tumpukan tidak dipengaruhi oleh penambahan sekam. Hasil dari penelitian ini mengindikasikan bahwa untuk menguji adanya pencampuran sekam dalam pollard dapat dilakukan dengan mengukur berat jenis, ukuran partikel dan sudut tumpukan.
Keyword: kadar air, pollard, sifat fisik, Makanan ternak, Sekam padi, Pollard

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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