Judul: Penampilan reproduksi kambing jawarandu (Studi kasus di PT Widodo Makmur Perkasa, Propinsi Lampung)
Abstrak: lhis study aimed to learn the reproduction perjonn of Jawarandu goat for the increase in the population cover the aspect of Conception Rate (CR), Service per Conception (S/C), as well as problems that open in the maintenance from 50 Jawarandu goat that consists of 41 heads in natuml breeding and 9 heads in Artrficial Insemination. Method in this study used of descriptive method, and primary data collection through interview with several st& in PT Widodo Makmur Perkasa and secondary data obtained from the available data in PT Widodo Makmur Perkasa, some literature, and the internet. The observation showed that the level success of the reproduction or Conception Rate (CRJ of natural breeding is higher than Artrficial Insemination that is of 82,93% in natural breeding and 66,67% in Artrficial Insentination. The Service per Conception (S'C) of natural breeding is 1,2 and the Artificial Insemination is 1,5. The data showed that S/C of ArhJicial Insemination is higher than natural breeding. The problems that o$en in the maintenance of the Jawarandu goat that is premature, born small, the young goat can't survive because the condition the body too weak, and the fracture.
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Judul: The Reproduction Performans of Cross Boer and Kacang Goat’s “Case Study in PT. Widodo Makmur Perkasa, Province of Lampung”
Abstrak: This case study aimed as to know about management and the problems that often in the maintenance of the Cross Boer and Kacang Goat’s, pregnancy rate in the natural breeding and artificial insemination of the Cross Boer and Kacang Goat’s, to know the reproductive performance of the Cross Boer and Kacang Goat’s and to know the value of the conception rate (CR) and service per conception (S/C) from the Cross Boer and Kacang Goat’s. this study was carried on November 2007 until July in 2008, based on the method survey descriptive with the primary data collection through the interview from the employee in the PT. Widodo Makmur Perkasa, immediately observation, and the activity data in 2006-2007. The data was analysed qualitatively. The observation showed that maintenance management of the goat is good and need to improvement in feeding management and health management. Appear of pregnant in the cross Boer and Kacang Goat’s with the natural breeding higher than artificial insemination, and the value of service per conception (S/C) 1,2 and the value of the conception rate (CR) 80% in the cross Boer and Kacang Goat’s included normal showed that the artificial insemination was success.
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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