Judul: Jati Belanda Leaves Extract (Guazuma ulmifolia Lamk.) Prevent Hyperlipidemic and Development of Experimental Atherosclerosis in Rabbit
Abstrak: Telah dikaji khasiat ekstrak daun Jati Belanda sebagai antihiperlipidemia dan antiaterosklerosis pada kelinci lokal jantan. Kelinci dibagi menjadi 4 kelompok perlakuan masing-masing 5 ekor Perlakuan kontrol hiperkolesterolemia (80 g/kgBB/hari), perlakuan ekstrak air (1 g/kgBB/hari), perlakuan ekstrak etanol (1 g/kgBB/hari), perlakuan fraksi aktif steroid (0,15 g/kgBB/hari, setara dengan dosis 1 g/kgBB/hari). Perlakuan dilakukan .selama 7 minggu., The effect of Jati Belanda leaves extract as antihyperlipidemic and antiatherosclerosis were studied in male local rabbit. Rabbits were divided into four treatment groups: hypercholesterolemic control-treated (80 g/kgBW/day), water extract-treated (1 g/kgBW/day), ethanol extract-treated (1 g/kgBW/day) and steroid active fraction-treated (0,15 g/kgBW/day, equivalent to 1 _g/kgBW/day).
Keyword: Leaves extract, antihiperlipidemia, antiaterosklerosis

Judul: Ekstrak Air Daun Jati Belanda (Guazuma Ulmifolia Lamk.) Berpotensi Menurunkan Kadar Lipid Darah Pada Tikus Putih Strain Wistar
Abstrak: Secara tradisional rebusan air daun jati belanda telah lama digunakan sebagai obat penurun kadar lipid darah. Hingga sekarang ini belum ada publikasi mengenai efek rebusan air (ekstrak air) daun jati belanda pada kadar lipid darah. Oleh karena itu, penelitian ini bertujuan mengkaji secara ilmiah pengaruh ekstrak air daun jati belanda dalam menurunkan kadar lipid darah hewan coba yang diinduksi menjadi hiperlipidelnia dengan pakan kolesterol dan propil tiourasil (PTU) melalui pengukuran kadar trigliserida dan kolesterol total darah pada tikus. Basil uji fitokimia daun jati belanda menunjukkan bahwa dalam serbuk kering daun jati beland" terdapat tanin dan steroid, sedangkan ekstrak air daun jati belanda mengandung tanin dan triterpenoid. Analisis proksimat yang dilakukan menunjukkan bahwa serbuk daun jati belanda mengandung protein 13.35%, karbohidrat 3.87%, lemak 14.540/0, dan serat 32.88%. Ekstrak air daun jati belanda mengandung protein 15.57%, karbohidrat 2.90%, lemak 23.11%, dan serat 11.02%.
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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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