Judul: Perbedaan Kualitas Nutrisi Hijauan Pada Musim Hujan dan Kemarau Serta Pengaruhnya terhadap Produksi dan Kualitas Susu di Kampung Barunagri, Lembang, Bandung Utara.
Abstrak: Availabilities of quality forages fluctuated during the year. In dry season, where plants grow slower and their qualities drop rapidly, is one of the hardest season for dairy farmer. High cattle stocking rate and limited available land hit the farmer harder. Barunagri village is one of the cattle stocking rate in Lembang Regency. The farmer experienced the difficulties of affording forage during dry season for several years. The research was aimed to studying the influence of season on availability quality forage and their impact on milk production and quality. The study have been conducted during wet and dry season (2007/2008) and observed 27 respondent from 8 different farmer groups. The study used both primary and secondary data. Parameter observed in the study included availability of quality forage, feed intake, milk production and quality. The data were described or analyzed used T-test. During dry seasons, forage qualities and availabilities as well as milk production were significantly lower in compare to wet season. However, milk fat contents were higher during dry season. Although Barunagri farmer had difficulties in affording high quality forages for their cows during dry seasons, but the farmer provided forage with lower quality and added with some agriculture by product that could maintained body weight of the animal but lowering milk production.
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Judul: Evaluasi Kecukupan Nutrisi Sapi Perah di Kawasan Usaha Peternakan Cibungbulang Bogor, Jawa Barat
Abstrak: The study is aimed to evaluate nutritional status of cows and their relation to animal performance at two different seasons (drought and rainy). The study was conducted in two phases. First phase was drought season data collecting for 3 months and the second phase was rainy season data collecting. The sample collected was examined in Dairy Nutrition and PAU laboratories IPB (March – June 2013). Variable was measured including the type and amount of feeds and nutrients offered, milk production and quality, body condition score. The collected data was tabulated and analyzed using descriptive statistic. Comparison between nutrients offered and standard requirement was analyzed using T-test. T-test have also been used to compare nutritional status of animal in rainy and drought seasons. The result showed that farmers in KUNAK have offered sufficient amounts of nutriens for their cows exept for Ca, when drought season came, deficiency of P was also occured. Milk yield tent to decrease during drought season but milk fat content increase during drought season but milk fat content increased. It is concluded that imbalance ration is one of the cause for low average milk production in KUNAK.
Keyword: nutrient adequacy, milk quality, milk production, dairy cows

Judul: Peluang Partikel Plasma Berada Pada Dimensi Debye Akibat Gangguan Gelombang Elektromagnetik dengan Menggunakan Persamaan Schrödinger
Abstrak: The solution of Schrodinger equations with plasma Coulomb potential in spherical coordinat results solution wave function and energy plasma particle. Electron probability density at Debye length with thermal effect same as ion, which indicates plasma in neutral state. Electromagnetic waves perturbation of an electric field given to result wave function perturbation system. The probability density of plasma particle due to electromagnetic waves perturbation is the largest when an electromagnetic waves frequency 1.41 times the plasma frequency .
Keyword: Schrödinger, plasma, electromagnetic wave