Judul: Pertumbuhan dan kelangsungan hidup benih Ikan Gurame yang diberi protein rekombinan GH melalui perendaman dengan dosis berbeda
Abstrak: This research was conducted to determine the dose of rGH giant gouramy (r- OgGH) given through immersion that generate the highest growth of gouramy juvenile. The dose of rGH used was 10 mg / l, 20 mg / l, and 30 mg / l and without administration of rGH as a control. Fifty fries of 2 days after the yolk egg absorbtion were immersed into 200 ml of rGH solution for 60 min. Immersion was performed 3 times and applied once a week. The fish were reared in aquaria at stocking densities of 7 fish/l for 5 weeks and fed on Artemia nauplii and blood worm 2 times a day ad libitum. The results showed that the average body weight of 30 mg/l (0.3394 g) and 20 mg/l (0.3179 g) rGH-treated fish were higher (P<0.05) compared to that of 10 mg/l (0.2423 g) and control (0.1939 g). There was no body weight differences (P>0.05) between the fish treated with 20 mg/l and 30 mg/l of rGH, and between the fish treated with 10 mg/l rGH and control. Furthermore, the growth rate of rGH-treated fish was higher (P<0.05) compared with control. Survival of fry treated with rGH 30 mg/l (100%) was higher than the control and other treatments. Thus, immersion of fry in 30 mg/l rGH solution can be applied to enhance the growth of giant gouramy with a high survival rate.
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Judul: Pertumbuhan dan kelangsungan hidup benih ikan gurame yang diberi pakan alami yang disuplementasi hormon pertumbuhan rekombinan
Abstrak: The study was conducted to determine the effectiveness of feeding Artemia nauplii and silk worm supplemented with recombinant growth hormone (rHP) on giant gourami fry to increase its growth. This study consisted of four treatments with two replications. The treatments were (A) Artemia enriched with rHP and silk worm without rHP supplementation, (B) Artemia enriched with rHP and silk worms with not lisated bacteria producing rHP, (C) Artemia enriched with rHP and silk worm with lisated bacteria producing rHP, and ( D) control without rHP enrichment. Giant gourami larvae used was two-day-old after yolk egg absorbed and in amount of 50 fish for each replication. Artemia nauplii of 202 mg wet weight were immersed into 200 ml of rHP solution for 30 minutes, and then it divided equally into each aquarium. Feeding fish on rHP-enriched Artemia nauplii was once a day for one week of rearing. Two gram of silk worms were mixed with rHP and allowed for 15 minutes. Feeding fish on rHP-enriched silk was once a day for 2 weeks of rearing. Fish were raised for 8 weeks and fed on live food ad libithum. The results showed that absolute and specific growth rate of treatments and control was similar (P>0.05). Fish biomass in Treatment A (192.31 g) was relatively higher compared to other treatments (172.88 and 173.95 g) and control (170.50 g). Survival rate of fish in treatment A (99%) and control (100%) was higher (P<0.05) compared to treatment C (91%) and B (89%). Thus, Artemia nauplii could be used to deliver rHP in order to increase growth of giant gourami fry.
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Judul: Analisis dan Implementasi Certificate Authorities (CA) pada Public Switched Telephone Network (PSTN)
Abstrak: Secure Telephone Protocol has ability to authenticate involved party and keep the secrecy of the message sent over the protocol. The secrecy of the message archieved by using symmetric key cryptographic scheme, and authentication archieved using public key cryptographic scheme. One of several party involved in the protocol and hold an important function called Certificate Authorities or CA. CA responsible for generating public key pair for other party involved in the protocol. When CA generates public key pair, several primitive cryptographic scheme used for guarantee the security of the key. Two of them are hash function SHA-1 and El-Gamal public key scheme embedded in Digital Signature Algorithm scheme. The prototype implementing the scheme above developed using Java programming language with JCE addition from Bauncy Castle. The analysis towards implemented prototype indicates that the prototype still has some flaws to be implemented in real world.
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