Judul: Peubah Pembeda Ukuran Tubuh Kambing Peranakan Etawah (PE) Induk Betina di antara Peternakan yang Berbeda
Abstrak: Kambing Peranakan Etawah (PE) merupakan hasil grading-up antara kambing etawah dan kambing kacang yang mewariskan sifat-sifat tetuanya. Perubahan morfologi pada kambing PE dapat terjadi akibat perbedaan adaptasi di kondisi ekologi yang berbeda-beda. Penelitian ini bertujuan untuk mengetahui variabel pembeda ukuran permukaan tubuh kambing PE betina dewasa yang sudah laktasi (umur 3 tahun atau kondisi gigi I3) antara BBPTU-HPT Baturraden dan BPTU-HPT Pelaihari di Kalimantan Selatan. Pengukuran permukaan tubuh linear kambing PE meliputi tinggi pundak (X1), tinggi pinggul (X2), panjang badan (X3), lebar dada (X4), dalam dada (X5), lebar pinggul (X6), panjang pinggul (X7), lingkar dada (X8), dan lingkar kanon (X9). Data dianalisis dengan statistik deskriptif, T2 Hotelling, diskriminan Fisher, dan penggolongan Ward-Anderson. Peubah pembeda ukuran permukaan tubuh linear antara kambing PE betina peternakan Baturraden dan Pelaihari ditemukan sebanyak 6 buah, yaitu tinggi pundak (X1), lebar dada (X4), dalam dada (X5), panjang pinggul (X7), lingkar dada (X8), dan lingkar kanon (X9). Penggolongan Wald-Anderson menunjukkan bahwa kelompok kambing PE di peternakan Baturraden dan Pelaihari tidak memiliki kemimripan ukuran tubuh sehingga seluruh kelompok kambing PE di masing-masing peternakan dapat dipertahankan., Etawah-grade Goat is the result of grading up between etawah goat and kacang goat that has the inheritance of their parents' trait. Morphological changes in etawah-grade goat can occur due to differences in adaptation in different ecological conditions. The purpose of this research was to determine the discriminator variables of body size measurements in BBPTU-HPT Baturraden and BPTU-HPT Pelaihari with a total of 30 heads of does in each farm. Body size measurements was performed on 3 years old Etawah-grade does which consisted of withers height (X1), hip height (X2), body length (X3), chest width (X4), chest depth (X5), hip-width (X6), hip-length (X7), chest girth (X8), and cannon circumference (X9). Data were analyzed by descriptive statistics, T2-Hotelling, Fisher discriminant, and Wald-Anderson classification. Six discriminator variables were found in Baturraden and Pelaihari, consisted of withers height (X1), chest width (X4), chest depth (X5), hip-length (X7), chest girth (X8), and cannon circumference (X9). The classification of Wald-Anderson showed that Etawahgrade does of Baturraden and Pelaihari are not similar in body size so that all Etawah-grade does can be maintained on each farm.
Keyword: analisis diskriminan, kambing peranakan etawah, peubah pembeda, ukuran tubuh, body size measurements, discriminant analysis, discriminator variables, etawah-grade goat

Judul: Variabel Pembeda Ukuran Tubuh Kambing Peranakan Etawah (PE) Betina di Tiga Peternakan Berbeda
Abstrak: The purpose of this research was to determine the differences among surface linear measurement body morphometric characteristics of BPTU KDIHPT Pelaihari, Cordero Farm, and Doa Anak Yatim Farm Etawah Grade goat females. Number of Etawah Grade goat females be observed were 90 heads (30 heads of each). Variables measured were shoulder height, hip height, body length, chest width, depth chest, hip width, rump length, chest circumference and cannon circumference. The data was analyzed with T2-Hotelling test, Fisher discriminan analysis, Wald-Anderson and D2-Mahalanobis minimum distance. Discriminator variables between BPTU KDI-HPT Pelaihari vs Cordero Farm Etawah Grade goat females were depth chest, rump length, chest circumference and cannon circumference, whereas those of BPTU KDI-HPT Pelaihari vs Doa Anak Yatim Farm Etawah Grade goat females were shoulder height, hip height, rump length and chest circumference, and those of Cordero Farm vs Doa Anak Yatim Farm Etawah Grade goats were shoulder height and hip height. Unsimilarity body morphometric distance between BPTU KDI-HPT Pelaihari vs Cordero Farm Etawah Grade goat females was 4.617, whereas that of BPTU KDI-HPT Pelaihari vs Doa Anak Yatim Farm Etawah Grade goat females was 5.952 and that of Cordero Farm vs Doa Anak Yatim Farm Etawah Grade goat females was 2.265. BPTU KDI-HPT Pelaihari Etawah Grade goat females was separated from Cordero Farm and Doa Anak Yatim Farm ones . Cordero Farm Etawah Grade goat females formed a category together with Doa Anak Yatim Farm ones conjecturable purpose milk production, whereas BPTU KDI-HPT Pelaihari formed category 2 as Etawah Grade goat females conjecturable purpose meat production.
Keyword: Bogor Agricultural University (IPB), Etawah Grade goat, discriminant analysis, body size discriminator

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4