Judul: Efektivitas Pemberian Hidrogen Peroksida Terhadap Kualitas Media, Kelangsungan Hidup dan Pertumbuhan Benih Ikan Patin Pangasius sp.
Abstrak: Environment manipulation techniques are required to improve survival rate and growth of the fishes, one of the commonly used techniques is by chemical. The purpose of this research was to analyze the effectivity of peroxide hydrogen on water quality improvement as culture media and to determine the optimum concentration of peroxide hydrogen to maximize the production performance of Pangasius sp. 30 Pangasius sp. tanks with initial length of 2,72±0,03 cm and initial weight of 0,25±0,00 g were stocked into tanks with dimension of 0,29 x 0,19 x 0,17 m3 in 3 treatments and 3 replications. Fish were fed with commercial feed for 35 days and the growth response was observed. The results showed that the water quality after peroxide hydrogen 12 ppm addition in media was able to improve DO (dissolved oxygen) efficiency, decrease ammonium level and total aquatic bacteria (total plate count). The addition of peroxide hydrogen also gave good spesific growth rate respond to jouvenil Pangasius sp.
Keyword: Bogor Agricultural University (IPB), Pangasius sp., hydrogen peroxide, growth, Efficiency level

Judul: Respon Fisiologi Benih Ikan Patin (Pangasius hypopthalmus) pada Pengangkutan Sistem Tertutup dengan Pemberian Zeolit, Arang Aktif dan Minyak Cengkeh
Abstrak: The objective of this research was to determine the effect of zeolit, activated charcoal and clove oil in maintaining water quality in the transport media and minimizing the stress level of Pangasius hypopthalmus juvenile. This research consisted of 6 treatments and 3 replications. Each treatments were; B). 20 g of zeolite + 10 g of activated charcoal; C). 20 g of zeolite + 10 g of activated charcoal + 3 ppm of clove oil; D). 20 g of zeolite + 10 g of activated charcoal + 6 ppm of clove oil; E). 20 g of zeolite + 10 g of activated charcoal + 9 ppm of clove oil; F). 20 g of zeolite + 10 g of activated charcoal + 12 ppm of clove oil, and A as a control (without zeolite, activated charcoal and clove oil). The duration of this research was 72 hours. The result showed that treatment E gave the best result among them. It was indicated by 5,348 ± 0,02 mg/L TAN (Total Ammonia Nitrogen) concentration, 50,42 mg/L CO2, 14,1 ng/ml of cortisol concentration, 1,56 (106×sel/mm3) erythrocyte, 6,52 (104×sel/mm3) leukocyte, 5,5±0,3 gr/100ml hemoglobin, 36,51±0,15 % hematocrit, 83,11% of survival rate. That treatment also showed the fewest of the gill histopathological changes and also showed the best spesific growth rate ( 1,035% of body weight/day).
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Judul: Konstruksi aritmetika kurva eliptik F(2m) supersingular dan non-supersingular untuk skema kunci publik ElGamal
Abstrak: Algoritme ElGamal adalah salah satu algoritme kunci publik dengan aritmetik modular p yang mempunyai struktur grip siklik Z(p). Tingkat keanaman algoritme ini terletak pada pemecahan masalah logaritme diskret dari Z(p). Akan tetapi, tingkat keamanan tadi tahun ke tahun semakin menurun yang disebabkan kemampuan pemecahan algoritme diskret semakin meningkat. Untuk memenuhi tingkat keamanan yang memadai dibutuhkan p yang cukup besar yang menyebabkan proses enkripsi dan dekripsi menjadi lambat.
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