Judul: Perbedaan Morfometrik Permukaan Tubuh Ayam Kampung Ciamis, Tegal dan Blitar Berdasarkan Variabel Pembeda Permukaan Linear Tubuh
Abstrak: Kampong chicken is the dual purpose of native fowl which used for dual purposes (broiler and layer types). The differentiation of Kampong chicken linear body size calculated with discriminat function analysis, Wald-Anderson and minimum distance D2-Mahalanobis. The location which used for research were Ciamis, Tegal and Blitar. The variables which measured were femur length, tibia length, shank length, shank circumference, wing length, maxilla length and third finger length. T2-Hotelling test show that there were the differentiation of Kampong chicken linear body size on each location. The distinguishing variables between cock of Ciamis and Blitar Kampong chicken were shank length and third finger length; whereas between cock of Tegal and Blitar Kampong chicken was shank length. The distinguishing variables between hen of Ciamis and Tegal Kampong chicken were shank circumference and wing length; between hen of Ciamis and Blitar Kampong chicken was third finger length; and between hen of Tegal and Blitar Kampong chicken were shank lenght and third finger length. Correction factor based on Wald-Anderson criteria between cock of Ciamis and Blitar Kampong chicken was 77,11% dan 77,59% between cock of Tegal and Blitar Kampong chicken. Correction factor between between hen of Ciamis and Tegal Kampong chicken was 71,03%; 66,91% between hen of Ciamis and Blitar Kampong chicken; and 71,01% between hen of Tegal and Blitar Kampong chicken. Minimum distance D2-Mahalanobis between cock of Ciamis and Blitar Kampong chicken was 1,699 and 1,513 between cock of Ciamis and Blitar Kampong chicken. Minimum distance D2-Mahalanobis between hen of Ciamis and Tegal Kampong chicken was 1,072; hen of Ciamis and Blitar Kampong chicken was 1,006; and between hen of Tegal and Blitar Kampong chicken was 1,061
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Judul: Kajian Perbedaan Ukuran Morfometrik Tubuh Ayam Kampung dan Ayam Pelung serta Ayam Nagrak (Persilangan Ayam Kampung dan Pelung)
Abstrak: This research use a secondary data from Rahmat Mufti. The variables which measured were shank length, tibia length, femur length, shank circumference, third finger length, comb tall, maxilla length and wing length. T2-Hotelling test show that there were the differentiation of kampong, nagrak and pelung male chiken (P<0.01), also were seen in group female chiken between kampong and nagrak chiken and between kampong and pelung chiken (P<0.01). The similarity were seen in group female chiken between nagrak and pelung chiken (P>0.05). Fisher discriminant analysis proved the distinguishing were seen in all variables between male group of kampong and nagrak chiken excepted femur length; whereas between male group of kampong and pelung chiken the distinguishing seen in all variables accepted shank femur length. The distinguishing variables between male group of nagrak and pelung chicken were maxilla length. The distinguishing seen in all variables between female group of kampong and nagrak chiken excepted femur length and maxilla length; whereas between female group of kampong and pelung chiken the distinguishing seen in all variables accepted shank length and femur length. The distinguishing variables were unseen between female group of nagrak and pelung chicken. Correction factor based on Wald-Anderson criteria was 100% in group male chikens beetwen kampong and nagrak, and also beetwen kampong and pelung. Correction factor based on Wald-Anderson criteria beetwen nagrak and pelung male chikens was 82%. Correction factor based on Wald-Anderson criteria in all group female chikens was 100% excepted beetwen nagrak and pelung.
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Judul: Nanokristalin Pirit (FeS2) sebagai Material Semikonduktor Fotovoltaik.
Abstrak: Teknologi fotovoltaik adalah suatu proses yang dapat mengubah sinar matahari menjadi energi listrik dengan media semikonduktor. Penggunaan sel surya untuk fotovoltaik hanya dapat mengonversi radiasi matahari menjadi energi listrik kurang dari 20%. Efisiensi akan meningkat ketika material semikonduktor untuk fotovoltaik dibuat menjadi ukuran nano. Pirit merupakan salah satu material semikonduktor fotovoltaik yang memiliki energi pita celah (Eg) dalam kisaran 0.8–0.95 eV. Energi pita celah tersebut terbukti meningkat ketika disintesis dengan metode hidrotermal menggunakan beragam molar [S]:[Fe] pada suhu 200 °C dalam 24 jam. Nilai energi pita celah yang dihasilkan adalah 1.58–2.073 eV. Ukuran nanokristalin pirit yang dihasilkan berada pada kisaran 21.04–58.77 nm menurut data Particle Size Analyzer. Besarnya ukuran nanokristal pirit yang tumbuh kurang dari 50 nm merupakan poin penting untuk aplikasi fotovoltaik.
Keyword: Hidrotermal, fotovoltaik, nanokristal, pirit