Judul: Growth Response, Biochemical Composition and Innate Immunity of the Juvenile Humpback Grouper after Treatment with Recombinant Growth Hormone.
Abstrak: Ikan kerapu bebek Cromileptes altivelis (Valenciennes, 1828) adalah salah satu jenis ikan laut bernilai ekonomi tinggi untuk ekspor ikan hidup yang dibudidayakan di Indonesia. Problem utama budidaya ikan kerapu bebek adalah pertumbuhannya yang lambat, sehingga perlu upaya mempercepat pertumbuhannya untuk efisiensi ongkos produksi dan menekan risiko kegagalan. Seiring dengan berkembangnya bioteknologi modern, pertumbuhan dapat dipercepat dengan memanfaatkan hormon pertumbuhan rekombinan. Penelitian ini bertujuan untuk menguji respons pertumbuhan, komposisi biokimia dan imunitas bawaan benih ikan kerapu bebek setelah perlakuan hormon pertumbuhan rekombinan ikan kerapu kertang Epinephelus lanceolatus (rElGH)., The humpback grouper Cromileptes altivelis (Valenciennes, 1828) is one of the most expensive marine fish cultured in Indonesia. The main problem encountered in the culture of this species is its low growth rate, therefore effort to fastening growth rate was needed for making aquaculture more efficient in terms of minimizing cost production and risk. With the development of modern biotechnology, growth has been improved through the use of various preparations of exogenous homologous or heterologous growth hormone (GH). In the present study, we investigated the growth response, biochemical composition and innate immunity of the juvenile humpback grouper after treatment with recombinant Epinephelus lanceolatus growth hormone (rElGH).
Keyword: growth, rElGH, IGF-1, nGH, stop and go, experiment, humpback grouper

Judul: Physiology, Biochemistry, and Molecular Responses of Giant Gourami Juvenile Treated by Recombinant Growth Hormone
Abstrak: Ikan gurame (Osphronemus goramy Lac.) merupakan salah satu spesies target revitalisasi perikanan untuk tujuan konsumsi dalam negeri yang produksinya ditargetkan meningkat sekitar 4% per tahun pada tahun 2014. Kendala utama dalam mewujudkan target tersebut adalah laju pertumbuhan somatik ikan gurame yang relatif rendah, yang membutuhkan waktu sekitar 1,5 tahun untuk mencapai ukuran konsumsi (300-500 gram). Target produksi tersebut dapat diwujudkan antara lain melalui penerapan peningkatan kecepatan pertumbuhan ikan gurame menggunakan protein hormon pertumbuhan rekombinan (rGH). Protein rGH telah terbukti mampu memacu pertumbuhan ikan, udang, dan kekerangan, sehingga berdasarkan hal tersebut percobaan ini dilakukan. rGH ikan mas (rCcGH) dan ikan kerapu kertang (rElGH) diekspresikan pada bakteri Escherichia coli strain BL21 (DE3), diekstraksi dan kemudian diujikan ke benih ikan gurame melalui perendaman untuk memacu pertumbuhannya. Jenis rGH yang memberikan efek pertumbuhan terbaik digunakan pada penelitian selanjutnya untuk menganalisis efeknya terhadap proses metabolisme dan ekspresi gen insulin-like growth factors (IGFs) dan growth hormone receptors (GHRs). Pada penelitian ini juga dilakukan kloning gen IGF-1 dan perancangan primer spesifik IGFs dan GHRs ikan gurame untuk analisis kuantitatif polymerase chain reaction (qPCR). Pada tahap akhir penelitian dilakukan uji biokimia untuk mengevaluasi status nutrisi, potensi alergi, dan analisis performa otot daging dan beberapa organ dalam ikan gurame., Aquaculture production of giant gourami in Indonesia is targeted to increase by 4% per year. The main constraint to meet the goal is slow growth of giant gourami, Osphronemus goramy Lac, which takes nearly 1.5 years to grow to a market size of 300-500 g. The target can be achieved by using recombinant growth hormone (rGH) to enhance growth of juvenile. The research was divided into four chapters: (1) analysis of growth and biochemical responses of giant gourami juvenile immersed in recombinant Cyprinus carpio growth gormone with different dosages, (2) analysis of growth, metabolism, and molecular responses of giant gourami juvenile immersed by recombinant Epinephelus lanceolatus (rElGH) and Cyprinus carpio growth hormone (rCcGH), (3) cloning of insulinlike growth factor I (IGF-1) gene and designing specific primer for quatitative PCR (qPCR), (4) evaluation of nutritional properties, allergenic potential, and histological performance of giant gourami immersed with rElGH. The results showed that both rElGH and rCcGH could promote growth gain of juvenile giant gourami. The juveniles immersed by 0.03 mg L-1 rElGH was more efficient and effective to enhance the growth of giant gourami juvenile over 120 mg L-1 rCcGH. The rGH has gluconeogenesis effect, in the muscle and liver rGH stimulates triglyceride uptake by enhancing lipoprotein lipase (LPL) activity and its subsequent storage. The effects of rGH on carbohydrate metabolism may be mediated indirectly via the antagonism of insulin action.
Keyword: Giant gourami, growth hormone, immersion, growth, metabolism, IGF- 1, fatty acid, amino acid, histological performance, histamine

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4