Judul: Tatalaksana kesehatan peternakan sapi perah rakyat di Kecamatan Cisarua Kabupaten Bogor (Studi kasus KTTSP Baru Sireum)
Abstrak: The aim of this study was to describe the smallholder dairy farming’s management at Cisarua, Bogor. This study was conducted during January until July 2012. Respondent were consisting of 13 smallholder dairy farmer from KTTSP Baru Sireum. The data were collected by interview used questionnaires and checklist about farmers characteristic, management practices of farmers, health and reproduction management, and sanitation. Data were analyzed by using rank Spearman correlation test. The research showed that characteristics of farmers has not significantly correlation with farm management. Majority of farmers in those area were included in good category in managing their smallholder dairy farm, except in health and reproduction management and waste management.
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Judul: Evaluasi Teknis Pemeliharaan Sapi Perah Friesian Holstein Peternakan Rakyat Di Desa Cibeureum Cisarua Kabupaten Bogor
Abstrak: This research was conducted to evaluate Farming practices of small holder (breeding and reproduction, feeding, management, housing and equipment, and animal health) at dairy farm Cibeureum located in Cisarua Bogor. This research was carried out from March to August 2010. Data were collected from 40 farms using survey method based on field observation, interview with farmers, and direct measurement. Secondary data were collected from local subdistrict and Giri Tani cooperative. The data were frequency tabulated and analyzed using. The the differences between observation and expectation value were analyzed ysing chisquare test (X2). The result showed that farmers knowledge and skills of dairy farming practices were lower than expectated value for breeding and reproduction (75,42%), selection method (34,37%). Therefore, improving farmers knowledge and skill and skill on the most critical point such as cattle selection can be used as a strategy to improve productivity on their farms.
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Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell