Judul: Ukuran tubuh dan karakteristik karkas sapi hasil inseminasi buatan yang dipelihara secara intensif pada berbagai kategori bobot potong
Abstrak: The purpose of this study was to examine the body measurement and carcass characteristic of beef cattle, the program from Artificial Insemination (AI) program, slaughtered at different body weight category. The regressiion equation were develop in order to predict body weight and carcass weight cattle from AI program using Simmental and Limousin semen. They were classified into three categories of slaughter weights (500-599 kg, 600-699 kg, 700-799 kg).
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Judul: Evaluation of Linier Body Size Measurement in Different Breeds of Beef Cattle with Digital Imaging Method
Abstrak: Metode citra digital digunakan dalam pengukuran ukuran linier tubuh ternak bertujuan agar ternak tidak stres saat proses pengukuran. Penelitian menggunakan masing-masing 50 ekor sapi pejantan dengan umur I2 (2,5-3 tahun) pada bangsa simmental, limousin dan peranakan angus dengan bobot potong simmental 327-766 kg, limousin 313-920 kg dan peranakan angus 402-782 kg. Data dianalisis dengan menggunakan analisis kovarian, kemudian dilanjutkan dengan Uji Tukey jika terdapat perbedaan antar perlakuan. Hasil penelitian menunjukkan pada ukuran panjang badan nyata lebih tinggi (P<0,05) pada bobot potong sapi simmental, tinggi badan nyata lebih tinggi (P<0,05) pada bobot potong sapi peranakan angus serta ukuran dalam dada dan lingkar dada nyata lebih tinggi (P<0,05) pada bobot potong sapi simmental dan peranakan angus. Evaluasi ukuran permukaan linier tubuh menggunakan metode citra digital pada sapi simmental memiliki nilai korelasi yang sangat kuat daripada sapi limousin dan sapi peranakan angus pada lingkar dada dan dalam dada dengan bobot potong. Ukuran linier tubuh lingkar dada dan dalam dada pada sapi simmental memengaruhi bobot potong., Digital imaging method is used to measure one livestock’s body size without causing any stress. The study used 50 heads of bulls for the simmental, limousine and angus crossbreeds with the age range I2 (2,5-3 years) and slaughter weight of 327-766 kg for simmental, 313-920 kg for limousine and 402-782 kg for angus crossbreds. Data were analyzed using covariance, then tested by Tukey to determine the differences between treatments. The results showed that the measurement of body length has significant effect (P<0,05) in simmental slaughter weight, significant effect (P<0,05) of body height in angus crossbred slaughter weight, and significant effect (P<0,05) of chest weight and chest circumference in Simmental and angus crossbred slaughter weight. Evaluation of linier body size measurement with digital imaging method in simmental bull have correlation value is categorigied as substantial than limousin and angus crossbreed bull of chest circumference and chest weight with slaughter weight. The dimension body size of chest circumference and chest weight for simmental bulls can be used as parameters to determine slaughter weight.
Keyword: bobot potong, citra digital, sapi potong, ukuran linier tubuh

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