Judul: Karakteristik Ukuran Dan Bentuk Tubuh Domba Ekor Tipis Melalui Analisis Regresi Komponen Utama Di Up3j, Peternakan Tawakal Dan Mitra Tani
Abstrak: Sheep as a small ruminant is very popular among the farmers in Indonesia, because it is easy to take care of, can breed well and easily adaptable. The relationship between body weight and body measurements are neccessary needed to be studied. These body measurements can be used as a predictor of a live weight. Thirteen body measurements were taken on 198 Local sheep under the age of one year. As a result T2-Hotelling method indicated that the difference body measurements and gender group in each farm sheep (P <0.01). Principal Component Analysis (PCA) showed that a high shoulder size and shape that has the highest eigen vector (0.56 and 0.67) in the group of sheep UP3J. The chest circumference has the highest eigen vectors respectively (0.61 and 0.56) as a size in MT Farm and Tawakal Farm. The body lenght has the highest eigen vectors respectively (0.80 and 0.62) a shape in that farm. Based on observations of linear body size can also determine score and the score of the size of each individual were observed by principal component analysis approach that can distinguish the size and shape of the various groups of local sheep. Determination of linear body measurement variables that provide a beneficial effect on body weight can be obtained based on elasticity values derived. Principal component regression analysis results showed that body measurements in each groups of male and female sheep is the chest circumference.
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Judul: Ukuran dan Bentuk Tubuh pada Domba Ekor Tipis, Domba Batur, Domba Wonosobo dan Domba Garut
Abstrak: Sheep potentially large as producing meat and wool for the public need the world. The research aimed to obtain genetic information morphometric characteristics based on size and shape body of Thin-tailed sheep (DET), Batur sheep (Dombat), Wonosobo sheep (Dombos), and Garut sheep (Fighting-type and Meat-production-type) that aged 1.5-2.0 years. Data obtained by measuring the linear body measurements sheep and processed with descriptive statistics, statistical T2-hotelling and principal component analysis. Result showed that body surface linear measurements were significantly different (P<0.01) between breeds. Principal component analysis resulted shoulder height was the size discriminator on DET, Dombat, Dombos, Fighting-type Garut and Meat-producing-type Garut sheep. Hip height was the size discriminator on DET, Fighting-type Garut and Meat-producing-type Garut sheep. Body length was the size discriminator on Dombat and Dombos. Shoulder height is a form discriminator on DET and Fighting-type Garut sheep. Body length is the shape discriminator on Dombat, Dombos and Meat-producing-type Garut sheep. Hip height is a form discriminator in Dombos while chest wid this a form discriminator in Meat-producing-type Garut sheep. Group diagram showed that the individual data for each sheep was unique because it formedits own group. Data group all sheep intersecting against DET, this shows that all sheep research had blood DET as their elders.
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Judul: Katalis Zink Ferit Tersubstitusi Cu untuk Oksidasi Benzil Alkohol
Abstrak: Katalis berperan dalam menurunkan energi aktivasi. Katalis ZnFe2O4 dan ZnFe2O4 tersubstitusi Cu disintesis menggunakan metode kopresipitasi untuk digunakan dalam oksidasi benzil alkohol. Katalis dicirikan dengan spektrofotometer inframerah (FTIR) dan difraktometer sinar-X. Spektrum FTIR menunjukkan puncak serapan dari ikatan Zn-O dan Fe-O masing-masing pada rentang 559‒575 cm-1 dan 419‒447 cm-1. Difraktogram menunjukkan terbentuknya fase tunggal Zn0.6Cu0.4Fe2O4 pada katalis ZnFe2O4 tersubstitusi Cu 20%. Benzil alkohol dioksidasi dengan sistem refluks. Konversi benzil alkohol meningkat dengan meningkatnya suhu. Kadar benzaldehida yang dihasilkan dengan katalis ZnFe2O4 tersubstitusi Cu 20% lebih tinggi dibandingkan dengan katalis ZnFe2O4 yang tidak tersubstitusi dan yang tersubstitusi Cu 60 dan 80%. Hal tersebut menunjukkan bahwa katalis ZnFe2O4 tersubstitusi Cu 20% memiliki kinerja yang lebih baik dalam oksidasi benzil alkohol menjadi benzaldehida dengan kadar benzaldehida 8.763%.
Keyword: Benzil alkohol, katalis, oksidasi, ZnFe2O4