Judul: Aktivitas Aminotransferase dan Peroksidasi Lipid pada Tikus Hiperkolesterolemia yang Diberi Ekstrak Jamur Tiram Putih
Abstrak: White oyster mushroom extract contain lovastatin which can be used as anticholesterol agent. But, this extract is thought to be hepatotoxic in certain doses. The aim of this research was to analyze AST and ALT activities and to measure concentration of lipid peroxide in liver of hypercholestrolemic mice induced with white oyster mushroom extract. Animals used in this research were 35 males Sprague Dawley mice that have been divided into five groups, that are normal (N) group, hypercholesterolemia (HK), lovastatin (L), white oyster mushroom extract dose 30 mg/kg BB (E1) and white oyster mushroom extract dose 60 mg/kg BB (E2). Administration of white oyster mushroom extract dose 30 mg/kg BB decreased 32.92% AST activity, 34.73% ALT activity and also lowered 54.05% lipid peroxide concentration than HK group. Induction with white oyster mushroom extract dose 60 mg/kg BB decreased 38.78% AST activity, 24.62% ALT activity and also lowered 17.50% lipid peroxide concentration than HK group. This data showed that the oyster mushroom extract was not affect the function of rat liver and could act as antioxidant.
Keyword: white oyster mushroom, lipid peroxide, enzyme, AST, ALT

Judul: Aktivitas antioksidan dan antihiperkolesterolemia eksuak beta glukan dari Saccharomyces cerevisiae pada tikus putih
Abstrak: The effect of beta glucan extract on total cholesterol level, trigliseride and lipid peroxide were studied in male white rat. The animals had been divided into five groups of treatments which contained six rats in every group : the first group was the rat with normal cholesterol, the 2" had hypemholestemlemia control (20 g/kgBW/day), the 3" group had extract beta glucan from Saccharomyces cerevisiae which isolated from bakers yeast treatment, the 4" group have the same beta glucm treatment yeast of '?ape'' origin and the last group had standard beta lucan treatment ti (1 mg/kgBW/day). Hypercholesterolernia condition reached on day 21 , aRer having been induced with PTU and fed by cholesterolic foods. Cholesterol of hypercholesterolemia control group increased up to 209% compared with the baseline values. The rat weight was increased 13% after treatment. All treated samples had significantly reduced blood lipid peroxide level between 8-50% lower than hypercholesterolemia control group(P<0.05). The hypocholesterolemia effect from the three extracts was revealed on day 2 1' to 28h with significant blood cholesterol reduction (6247%) which were lower than the hypercholesterolemia group (p<0.05). The beta glucan extract the from thee isolates codd repress the increased level of blood cholesterol 20-28% lower than hyperchotesterolemia control group, but it seemed not to be consistent because they could only repress the increasing level by day 7' dan 2gh (pAI.05). At the end of hypercholesterolemia induction the level of cholesterol and trigliseride returned into normal conditions. On this circumstances, the hypercholesterolemia effect of the three isolates was revealed. At the end of research, antioxidant activities of the three extracts was able to reduce the liver lipid peroxide level significantly between 3 1-34% lower than the hypercholesterolemia control group.
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Judul: Identifikasi Kejadian Banjir Rob (Pasang) di DAS Sunter pada 9-13 Januari 2008.
Abstrak: Banjir Rob merupakan fenomena meluapnya air laut ke daratan, istilah tersebut pertama kali dikenal di daerah Semarang. Fenomena banjir Rob dipengaruhi oleh pasang surut air laut. Pasang surut sendiri dipengaruhi gravitasi bulan dan matahari, serta dipengaruhi pula posisi bulan dan matahari terhadap bumi. Banjir ini biasa terjadi pada saat pasang air laut yaitu bertepatan dengan kejadian bulan baru dan bulan purnama. Pada bulan Januari 2008, di wilayah utara Jakarta yang berbatasan dengan laut, fenomena banjir Rob (pasang) melanda kawasan tersebut. Fenomena ini mengakibatkan sejumlah kawasan di wilayah utara Jakarta terendam air laut, hal ini diperburuk dengan penurunan muka tanah Jakarta. Selain dilanda banjir pasang air laut, kawasan utara Jakarta sering dilanda banjir akibat luapan sungai-sungai yang bermuara di Jakarta, salah satu sungai yang menyumbang banjir Jakarta adalah sungai Sunter. Tutupan lahan di DAS Sunter yang sebagian besar berupa pemukiman makin meningkatkan limpasan permukaan ketika terjadi hujan. Tanggal 9-13 Januari 2008 di perairan Teluk Jakarta sedang terjadi pasang air laut karena bertepatan dengan bulan baru yang mengakibatkan terjadinya banjir Rob di beberapa wilayah di Jakarta Utara, termasuk DAS Sunter. Berdasarkan pemetaan banjir Rob di DAS Sunter pada tanggal 9-13 Januari 2008 diketahui bahwa daerah yang tergenang air laut yaitu Kalibaru dan Marunda dengan tinggi genangan 48-72 cm. Luas genangan maksimum terjadi pada tanggal 11 Januari 2008 yaitu sebesar 66.000 m2. Pada tanggal 9-13 Januari, DAS Sunter tidak ikut menyumbangkan limpasan permukaan yang dapat menyebabkan banjir karena nilai limpasan permukaan berkisar 0-3,03 mm. Sehingga kejadian banjir pada tanggal 9-13 Januari 2008 di DAS Sunter hanya berasal dari pasang air laut. Kata Kunci : Banjir Rob, Pasang-Surut, Limpasan Permukaan, DAS Sunter.
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