Judul: Estimasi Bobot Badan berdasarkan Ukuran Tubuh pada Sapi Madura yang Dipelihara secara Intensif
Abstrak: Bobot badan menjadi parameter penting dalam manajemen pembibitan, namun pengukurannya sulit dilakukan karena keterbatasan fasilitas timbangan. Tujuan dari penelitian ini adalah menganalisa hubungan antara variabel antara ukuran linier tubuh dan bobot badan pada sapi madura dengan sistem pemeliharaan intensif. Penelitian ini menggunakan 85 sampel data morfometrik, seperti panjang badan, lingkar dada, tinggi pundak, dan bobot badan yang dikategorikan berdasarkan umur dan jenis kelamin lalu dianalisis dengan metode bivariat Pearson dan regresi linier sederhana. Analisis data dilakukan secara berurutan dari analisis deskriptif hingga uji signifikansi pada taraf 5%. Hasil penelitian menunjukkan bahwa nilai koefisien korelasi dan determinasi tertinggi serta nilai RMSE terendah dari persamaan regresi terdapat pada hubungan variabel lingkar dada dengan bobot badan pada setiap kategori. Salah satu contoh persamaan regresi pada hubungan variabel lingkar dada dengan bobot badan pada sapi madura jantan 205 hari adalah Y=-163,333+2,431X dengan nilai RMSE, R2, dan r masing-masing 2,092, 0,976, dan 0,988, serta memiliki hubungan yang signifikan. Oleh karena itu, variabel lingkar dada dapat digunakan untuk estimasi bobot badan pada sapi madura., Body weight is an important parameter in breeding management, but its measurement is difficult due to limited weighing facilities. This study aims to analyze the correlation between variables between linear body size and body weight in madura cattle cared under intensive rearing system. This study used 85 samples of morphometric data, such as body length, chest girth, wither height, and body weight which categorized based on age and sex, and then analyzed using the Bivariate Pearson method and simple linear regression. The analysis was carried out sequentially from descriptive analysis to significance test at the 5% level. The results showed that the highest correlation and determination coefficient values and the lowest RMSE values from the regression equation were found in the correlation between chest girth and body weight in each category. An example of a regression equation on the correlation between chest girth and body weight in a 205-day-old madura calf is Y=-163,333+2,431X with RMSE, R2, and r values of 2.092, 0.976, and 0.988, and has a significant result. Therefore, the chest girth can be used to estimate body weight in madura cattle.
Keyword: body weight, madura cattle, morphometric, simple linear regression

Judul: Studi Ukuran Tubuh Sapi Madura di Desa Samaran Kecamatan Tambelangan Kabupaten Sampang Madura
Abstrak: Salah satu faktor yang dapat menghambat usaha pengembangan dan peningkatan produktivitas sapi Madura adalah terbatasnya informasi/data performa serta potensi biologis ternak tersebut. Penelitian ini bertujuan untuk mengumpulkan data performa tubuh dan mengetahui hubungan antar ukuran-ukuran tubuh, sekaligus hubungan antara ukuran tubuh dengan bobot badan sapi Madura di Desa Samaran, Kecamatan Tambelangan, Kabupaten Sampang, Madura. Penelitian ini dilaksanakan di Desa Samaran, Kecamatan Tambelangan, Kabupaten Sampang, Madura, selama bulan Pebruari 2000.Ternak yang digunakan adalah sebanyak 22 ekor sapi Madura jantan berumur 1-2 tahun, 25 ekor sapi Madura jantan berumur 2-3 tahun, 25 ekor sapi Madura betina berumur 1-2 tahun, 28 ekor sapi Madura betina berumur 2-3 tahun. Rancangan penelitian yang digunakan adalah Uji t, formula hasil penelitian Zaed (1992), Rumus Schoorl, Rumus Winter, Analisis Regresi Linier, Regresi Kuadratik, Regresi Kubik, Regresi Linier Berganda dan Analisis Korelasi.
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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