Judul: Studi Ukuran dan Bentuk Tubuh Ayam Kampung di Ciamis, Tegal dan Blitar
Abstrak: The purpose of this research is to identify the size and shape of the body using 328 Kampong chickens (45 males and 56 females from Ciamis; 20 males and 89 females from Tegal; 38 males and 80 females from Blitar). Differences of linear measurements of body surface of Kampong chicken from Ciamis, Tegal and Blitar was analyzed using descriptive analysis was tested with statistics T2 -Hotelling. The size and body shape of the Kampong chickens was be determined through a principal component analysis. The differences of sizes using a linear measurement of the body surface indicated that Kampong chickens from Ciamis were type that are more towards broiler type; Kampong chickens from Tegal were more toward laying hen type; and Kampong chickens from Blitar were more towards laying hens and broiler chickens type. The differences of linear variable of body size were found between two Kampong chicken group based on T2 -Hotelling statistical test (P<0,01). The result of principal component analysis shows that the Eigen values of Kampong Chickens from Ciamis, Tegal and Blitar sizes were found by the length of tibia (with Eigen vector were 0,562; 0,583 and 0,561 respectively) with correlation coefficient of size +0,789; +0,730 and +0,817 respectively. Tarsometatarsus lengths were also being found as a marker size of Kampong chicken from Blitar with Eigen vector 0,625 and correlation coefficient of size +0,829. Eigen value of shape of Kampong chickens from Ciamis and Kampong chickens from Tegal found by the length of femur were 0,547; 0,620 respectively and with correlation coefficient of shape +0,563; +0,694 while Eigen value of the length of tibia were 0,580; 0,607 respectively with the correlation coefficient of shape 􀵆0,499; 􀵆0,598. Eigen vector value of shape Blitar Kampong chicken was determined by the length of the femur and the wing length with the Eigen vectors were 0,603 and 0,625 respectively and the correlation coefficient of shape +0,652 and +0,674.
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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: Pervaporasi Alkohol Menggunakan Membran Polistirena-SDS
Abstrak: Polystyrene (PS) membrane with SDS as porogen can be utilized as a filter in alcohol pervaporation process. The membrane was prepared using inversed phase method with PS:SDS:dichloromethane solvent composition were 17:0:83; 17:0.5:82.5; 17:1:82; 17:1.5:81.5; and 17:2:81. Homogenization of mixtures were carried out for 10 and 20 hours and casted on glass plate surface then submerged it into water with temperature of 60 °C. Pervaporation capability was evaluated from flux value and separation factor. The average of water flux values in 20 hours sonication were higher than the values in 10 hours sonication. The highest separation factor was observed in PS membrane with 0.5% SDS concentration and homogenization in 20 hours is 5.23. Application of PS membrane in pervaporation as showed by purities of alcohol value using gas chromatography method revealed that the purities increase from 91.6 to 93.4%. Therefore, certain SDS addition can increase the performance of PS membrane in alcohol purification.
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