Judul: Studi ukuran tubuh kerbau (Bubalus bubalis) di beberapa wilayah di kabupaten Lebak, provinsi Banten
Abstrak: The huge number of buffalo population in Lebak district, province of Banten is promizing to be developed, especially to support meat sustainability program Buffalo in Lebak district produce 85,5% of meat. Buffalo also important as source of draught power and manure as fertilizer. Unfortunally, this potential animal has not been utilized optimally. Limited information about characteristics and management of nourhising contribute to the condition. This study was conducted in order to fill the need of that information.
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Judul: Karakteristik Ukuran Tubuh  Kerbau Rawa di Kabupaten Lebak dan Pandeglang Propinsi Banten
Abstrak: The objectives of this research were to find out information on both body measurement and potencies of swamp buffalo at Cibadak subdistrict in Lebak District and Cisata subdistricts in Pandeglang Districts. Thi research was carried out from September to November, 2008. A total number of swamp buffloes observed were 220 hd both female and male of those from Cibadak and Cisata district were 79 hd and 141 hd respectively. Various body measurement observed were body length, round chest, chest depth, shoulder height and hip height. Mean and standar deviation of individual body measurement of swamp buffalo within location were calculated by descriptive analyses, while mean differences between two location were tested by t-test. The result showed that all body measurement of swamp buffalo in Cisata were very significantly higher (P<0,01) than those in Cibadak Subdistrict. Measurements of both shoulder height and hip height of male buffalo at the age of 1-3 mo in Cisata were significantly higher (P<0,05) than those in Cibadak. Measurements of round chest and chest depth of female buffalo at the ages of 12-15 mo and 2-3 yr in Cisata were higher (P<0,05) than those in Cibadak, while hip heights at the ages of 12-15 mo and >4 yr of female buffalo in Cisata were significantly higher (P<0,05) than those in Cibadak. Generally all body measurements of swamp buffalo, both male and female in Cisata Subdistrict were higher than those in Cibadak Subdistrict. This was supposed due to management feeding in Cisata better than in Cibadak.
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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