Judul: Analisis Faktor-faktor yang Memengaruhi Permintaan Daging Sapi dan Implikasinya terhadap Kebijakan Impor
Abstrak: Chaotic imported beef in November 2012, resulting in a rise in the price of beef in the market so that the need for special handling so that beef prices. This research was conducted to analyze the factors that affect the demand for beef in Indonesia and the role of substitution, and the implications of policy import. This study uses secondary data the period 1982-2011. Analyses were performed with the econometric approach, estimation models using Principal Component Regression (RKU). The results show the coefficient of determination (R2) of 71.7 percent, and the elasticity of each of the variables tested small relative to the demand for beef show that beef consumption is not replaceable. Beef demand continues to increase every year even though the price of beef is relatively expensive. Formulations stabilization policy covering the prices of additional supplies at the time of the great religious, imports done merely to meet national shortage of supplies beef and ensure the availability of food -substitutions beef as the availability of chicken meat and eggs, and increases the production of beef in the long run.
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Judul: Analisis permintaan daging sapi di Indonesia
Abstrak: The observation has purpose (1)To analize the influence of the price meat import meat (2) To analize the influence of riel value (3) To analize the influence of offering domestic meat (4) To Analize the influence of consumption domestic meat (5) To analize the influence of income. The obervation held first month of June untill last month of June 2008 the data which used secondary from Badan Pusat Statistik. The observation analized by quantitatif description to describe variable offering meat import and qualitatif by Cobb Douglas model which linier double log transformation which used Microsoft Excel and software Eviews 4.1. The result of this observation are (1) the amount of R2 Value is 96,43% it's mean the variation of variable can be explained like liniear by the variable free. (2) On test F shown 0,00001 which has value more litle than rate of real which used is a=5% it means the value shown that the similarity significant enough to explain the variable which used. (3) the amount elastisity shown degree of feeling variable dependent on similarity to changing of variable independent (4) In test of econometrics the similarity have not problem auto corelation heteroskedastisity and multikolinieritas (5) The variables which have negative influence to meat import requirement is value riel changing the price of meat import, and meat domestic offering (6) The variables which have positive influence to meat cow import is meat consumption and income per capity of people
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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