Judul: Aktivitas Antikalkuli Ekstrak Etanol Tapak Dara (Catharanthus roseus) Secara In Vitro dan In Vivo pada Tikus dengan Induksi Etilen Glikol
Abstrak: Catharanthus roseus leaf is empirically utilized plant to treat the kidney stone. Otherwise, this thing hasn’t been proved scientifically. The aim of this research is to test the 96% ethanolic extract of leaf in vitro at calcium oxalate crystal and in vivo at Sprague dawley rat which induced with ethylene glycol 0.75%. The phytochemical screening and decay of calcium oxalate was performed during in vitro assay than the creatinine and calcium oxalate in vivo content was measured. The water content value of symplisia as 3.83% and extract rendement as 32.129%. The analysis result of phytochemical extract contains flavonoid, alkaloid, saponin, tanin and triterpenoid. The in vitro anticalculi activity showed ability of calcium oxalate crystal aggregation inhibition. The in vivo anticalculi activity indicates recovery of renal function and reduce amount of deposited kidney crystal. The extract with dose 100 mg/kg body weight and 300 mg/kg body weight wasn’t significally different at (p<0.05). Catharanthus roseus ethanolic extract potentially treat the kidney stone in vitro and in vivo
Keyword: Bogor Agricultural University (IPB), Anticalculi., Sprague dawley, Catharanthus roseus

Judul: Aktivitas Ekstrak Daun Alpukat Terhadap Perbaikan Ginjal Tikus Akibat Induksi Etilen Glikol
Abstrak: Based on data from WHO been 80% of world population has been used plant extract as a medicine. The objective of this research was to study the histopathological lesions of rat kidneys induced by ethylene glycol and treated by ethanol extract of avocado leaves. This study is a continuation of Adha’s experiment (2009) with the experimental design as follows: 20 male rats were divided into four groups, negative control group (KN) who were given only distilled water, positive control group (KP), which provided adlibitum inducer, the first treatment group (E100) is given inducer and avocado leaves ethanol extract dose of 100 mg/kg BB, and the second treatment groups were given inducer and avocado leaves ethanol extract dose of 300 mg / kg BW. Treatment was given for 10 days, at day-11 rats euthanized, and kidney organs were taken for histopathology and stained with Hematoxylin-Eosin. The histopathological study showed edema, protein deposition, hyaline droplets and tubular necrosis. Statistical analysis showed that administration of ethanol extract of avocado leaves could not reduce the incidence of glomerular edema, hyaline droplet and protein deposition of tubules, but it can significantly inhibit the formation of tubular necrotic. Ethanol extract of avocado leaves contain flavonoids that work as antioxidants and diureticum that can inhibit the formation of tubular necrotic.
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Judul: Approximation of the Median of Poisson Distribution Using the Relation of Poisson-Gamma Distribution
Abstrak: A major drawback of median is that median cannot usually be defined in closed form, even in the cases where their distribution functions are known. This study gives an approximation of the closed form for the median of the Poisson distribution by using the relation of Poisson-Gamma distribution. The approximation uses elementary techniques based on the monotonicity of certain sequences involving tail probabilities of the Poisson distribution and the Central Limit Theorem. Furthermore, a closed form expression for the mean absolute deviation 􀜧|􀜰􀰒 􀵆 􀜯􀝁􀝀􁈺􀜰􀰒􁈻| is also studied. The median is relevant because of the fact that it minimizes the mean absolute deviation of a Poisson random variable (􀜰􀰒􁈻 by considering median as central tendency.
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