Judul: Curcumin /extract curcuma domestica in pig rations to replace sintetic antibiotic as growth promotor
Abstrak: Penggunaan senyawa antibiotik sebagai pemacu pertumbuhan dalam ransum ternak telah menjadi perdebatan sengit para ilmuwan akibat efek buruk yang ditimbulkan bagi konsumen seperti residu dan resistensi. Maka perlu dicari alternatif yang aman dan mudah didapat di negeri kita ini, salah satunya adalah curcumin merupakan hasil dari ekstrak dari kunyit Curcuma domestica yang mempunyai khasiat untuk merangsang organ pencernaan seperti lambung, usus dan kelenjar pankreas dalam proses pencernaan makanan. Selain itu curcumin secara in vitro mampu menghambat pertumbuhan bakteri patogen dalam usus seperti Staphylococcus dan Streptococcus.
Keyword: Curcuma domestica, Growth promotor

Judul: Efektivitas Phytogenic Temulawak (Curcuma xanthorrhiza) dan Kunyit (Curcuma longa) dalam Pakan terhadap Performa Broiler.
Abstrak: Tahun 2018 antibiotik pemacu pertumbuhan dilarang ditambahkan dalam pakan ternak unggas. Oleh karena itu dibutuhkan pengganti antibiotik pemacu pertumbuhan agar ayam broiler tidak mengalami penurunan peforma. Penelitian ini menggunakan temulawak dan kunyit sebagai pengganti AGP. Kandungan kurkumin dalam kunyit dan temulawak dapat menjaga kesehatan saluran pencernaan ayam sehingga pencernaannya optimal. Penelitian ini menggunakan 400 ayam broiler jantan dan betina dengan 4 perlakuan pakan dan 5 ulangan. Perlakuan yang digunakan adalah R0 (Kontrol), R1 (R0 + formula aditif pakan A), R2 (R0 + formula aditif pakan B), R3 (R0 + formula aditif pakan C), penelitian ini menggunakan Rancangan Acak Lengkap (RAL) faktorial 4x2. Faktor A adalah perlakuan pakan. Faktor B adalah jenis kelamin jantan dan betina. Peubah yang diamati dalam penelitian ini adalah bobot ayam jantan dan betina, konsumsi pakan, mortalitas, pertambahan bobot badan, dan Feed Convertion Ratio (FCR). Data dianalisis menggunakan Analisis Varians (ANOVA) oleh program SPSS versi 25.0. Hasil penelitian menunjukkan bahwa ransum dengan penambahan aditif pakan fitogenik Formula C secara signifikan (P <0.05) meningkatkan peforma. Penambahan aditif pakan herbal Formula A dan B dalam ransum tidak berpengaruh signifikan terhadap konsumsi pakan, dan rasio konversi pakan. Kesimpulan dari penelitian ini adalah penggunaan fitogenik temulawak dan kunyit Formula C sebagai aditif dapat meningkatkan bobot badan dan pertambahan berat badan serta menghasilkan IOFC paling tinggi.
Keyword: aditif pakan fitogenik, kunyit, kurkumin, peforma ayam broiler, temulawak

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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