Judul: Penetapan net protein utilization campuran tepung jagung dan tepung ikan
Abstrak: Tujuan penelitian untuk mengetahui mutu protein secara biologi dari pola konsumsi pangan. yang menggunakan jagung sebagai sumber karbohidrat, dan ikan sebagai sumber protein. Rancangan percobaan yang dipakai dalam penelitian ini ialah Rancangan Acak Lengkap. Berikut Uji Tukey yang dipakai untuk membandingkan nilai rata-rata umum dari NPU antar perlakuan, Nilai Cerna antar perlakuan, Nilai Biologi antar perlakuan dan ND E antar perlakuan. Perlakuan percobaan yang diteliti sebanyak empat perlakuan, yaitu bahan makanan percobaan. Jagung. (Zea mays), Campuran Jagung dan Ikan Teri (Stolephorus commersonii), Campuran Jagung dan Ikan Mujair Nila (Tilapia nilotica L.) dan Campuran. Jagung dengan. Ikan. Belut (Fluta alba). Mutu protein dari bahan makanan percobaan Susu Skim yang juga diteliti dalam percobaan ini, digunakan sebagai pembanding umum dari mutu protein bahan makanan percobaan di atas. Perbandingan jagung, dengan ikan di dalam campuran. adalah. tujuh berbanding tiga. Semua bahan makanan percobaan dibuat dalam bentuk tepung. Hewan percobaan yang digunakan adalah tikus putih berumur antara 29 hingga 31 hari.
Keyword: mutu protein

Judul: Karakteristik Sifat Fisik Tepung Ikan Serta Tepung Daging dan Tulang
Abstrak: Bahan pakan sumber protein hewani sangat penting bagi ternak, karena kandungan protein dan asam aminonya tinggi, tetapi harganya lebih mahal dibandingkan sumber energi dan sumber protein nabati, maka diperlukan perhatian khusus terhadap pengawasan mutu dan penyimpanan agar kualitas bahan pakan sumber protein hewani tidak menurun. Sifat fisik merupakan salah satu pengujian secara cepat untuk menentukan bahan baku pakan diterima atau tidak dalam proses quality control, maka penelitian tentang sifat fisik bahan baku pakan perlu dilakukan. Penelitian ini dilaksanakan selama tiga bulan mulai dari bulan Juni sampai dengan bulan Agustus 2005 di Bagian Ilmu dan Teknologi Pakan, Departemen Ilmu Nutrisi dan Teknologi Pakan, Fakultas Peternakan, Institut Pertanian Bogor. Metode yang digunakan dalam penelitian ini adalah metode Rancangan Acak Lengkap (RAL) untuk tepung daging dan tulang dengan 2 perlakuan dan 4 ulangan. dan tepung ikan menggunakan Rancangan Acak Lengkap (RAL) Faktorial 2×2×4, dua untuk asal pemasok dari industri besar dan kecil, 2 asal tepung ikan dari lokal dan impor dengan 4 kali ulangan. Peubah yang diamati adalah kadar air (%), berat jenis (g/ml), kerapatan tumpukan (g/ml), kerapatan pemadatan tumpukan (g/ml), sudut tumpukan (0), dan daya ambang (m/det).
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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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