Judul: Analisis Diskriminan Ukuran Tubuh Betina pada Domba Ekor Tipis Batur Wonosobo dan Garut
Abstrak: The purpose of this research was to evaluated the differences among morphometric characteristics of Thin-Tailed, Batur, Wonosobo and Garut (fighting and meat types) ewes. Variables be observed were shoulder height, hip height, body lenght, chest width, chest depth, hip width, rump width, rump length, metatarsus length, metacarpus length and cannon circumference. Number of sheep be observed were 79 heads. The data was analyzed with T2-Hotelling test, fisher discriminan analysis, Wald-anderson and D2-Mahalanobis minimum distance. Discriminator variable between Batur vs Garut meat type was cannon circumference, Batur vs Garut fighting type was shoulder height and cannon circumference, Batur vs Wonosobo was hip width, Thin-Tail vs Batur was body length, Thin-Tailed vs Garut meat type was shoulder height, Thin-Tailed vs Garut fighting type was shoulder height, Thin-Tailed vs Wonosobo was body length, chest width, hip width, rump width , rump length, Wonosobo vs Garut meat type was hip width. Unsimilarity distance between Batur and Garut meat ewes, type was 4.058, Batur and Garut fighting type was 2.278, Thin-Tailed and Batur was 3.950, Thin-Tailed and Garut meat type was 2.758, Thin-Tailed and Garut fighting type was 2.921, Thin-Tailed and Wonosobo was 4.748, Wonosobo and Garut meat type was 2.204. Thin-Tailed was separated from the others. Wonosobo formed a group together with Garut. Garut fighting and meat types was not separated because it was a group of Garut Sheep. Garut and Wonosobo formed one group that separated from Batur.
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Judul: Perbandingan Ukuran dan Bentuk Morfometrik Permukaan Kepala Beberapa Domba Lokal Indonesia
Abstrak: The aim of this research was to compare the head size and shape of thin-tailed sheep (domba ekor tipis or DET), batur, wonosobo, and garut sheep (fighting and meat types). The variables measured were akrokranion-prosthion (X1), basion-prosthion (X2), mandibular (X3), head height (X4), facial tuber (X5), nasion-rhinion (X6), entorbitale (X7), euryon (X8), supraorbitale (X9). There were 111 heads of local sheep that used in research (32 rams and 79 ewes). Data were analyzed by descriptive statistics, T2-Hotelling and principal component analysis. Differences of head size surface among breeds were found in this experiment. The head size discrimination of the DET and garut meat type was basion-prosthion, since the eigen vektors are +0912 and +0928, respectively. The head size discrimination of the batur and wonosobo sheep was akrokranion-prosthion that their eigen vektors are +0969 and +0902 respectively. The head shape discrimination of DET, wonosobo and garut meat type were mandibular which those eigen vektors are +0904, +0836, and +0965 respectively. The head shape discrimination of Batur sheep was head height with the value of eigen vektor is +0907. The head size and shape discriminations on garut fighting type sheep was head hight with eigen vektor values are +0905 and -0406. Data clustered between garut fighting and meat types was separated. It also happened between batur sheep and wonosobo sheep. Overlaping data was found on DET, garut fighting-type, wonosobo and batur sheep.
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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