Judul: Sifat-sifat reproduksi ayam pelung di kecamatan Cibeber dan kecamatan Gekbrong Cianjur, Jawa Barat
Abstrak: Pelung chicken is one of Indonesian local chicken, which have spesific traits mainly on male chicken. It have long voice, beautiful and spesific rhytme. It also have heavy body weight and a potential income as chicken meat type. The aimed of this research was to collect information of Pelung's reproductivities in subdistrict Cibeber and Gekbrong, in Cianjur district. The research was conducted in June up to the end of September 2006. Data was collected from 289 heads of Pelung chicken and had been analyzed by using student test.
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Judul: Karakteristik morfologi ayam pelung dewasa diKecamatan Cibeber dan Gekbrong Kabupaten Cianjur, Jawa Barat
Abstrak: Pelung chicken as one of local chicken in Indonesia that have specificity, especially on male chicken which long voice, beautiful, and specific rhyme. The male of Pelung chicken have heavier body weight than any other male chicken. It show a potential characteristic as meat type chicken. The purpose of this research was to collect information of specific morphological characteristic of Pelung chicken in Cianjur. The research was conducted in subdisdricts of Cibeber and Gekbrong in two months, from May up to the end of Juty 2006. Data were collected from 63 heads of Pelung males and 37 heads of hens in Cibeber, a9 heads Pelung males and 50 heads of hens in Gekbrong. The morphological chracteristic of Pelung chicken was analyzed by using Principal Component Analysis (PCA). The result of Principal component Analysis showed that males Pelung chicken in the subdistrict of Geicbmng had bigger body size than Pelung chicken in the subdistrict of Cibebe7, while body shape- was similar. Body size of male Pelung chicken could be identified by chest circumference, while body shape by femur and neck lenght Size and shape of female Pelung chicken in two subdistrict were different Body size of female pilung chicken were identified by wing lenght and ched circumferenced, while body shape by neck lenght Keyword : Pelung chicken, morphology, Principal Component Analysis.
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Judul: Peran Surfaktan Setiltrimetilamonium Bromida dan Natrium Dodesil Sulfat pada Sintesis ZnO dengan Metode Hidrotermal
Abstrak: Zno crystal is the main preference material in various applications recently, such as in semiconductors, ultraviolet lasers, and catalysts. This study aims to synthesize ZnO with addition of surfactant. ZnO crystals were synthesized by reacting ZnSO4, KOH, and surfactants using hydrothermal method. The first step was to determine the best ratio of ZnSO4: KOH (1:2; 1:3; 1:4, and 1:5) based on X-ray diffraction. The second step was to evaluate the role of surfactan cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) on the synthesis of ZnO crystals. The result of this study showed the best ratio of ZnSO4:KOH was 1:3, based on the least of impurities and the highest degree of crystallinity (85.64%). The addition of surfactant CTAB and SDS in the synthesis of ZnO increased the degree of crystallinity, which were 98.28% and 92.17%, respectively. Based on mathematical calculation using Scherrer equation, the crystal size without surfactant was 32 nm, whereas with CTAB and SDS the crystallited size were 28 nm and 29 nm, respectively. The degree of crystallinity and crystal size indicated that CTAB surfactant produce ZnO crystals with the best characteristics as compared to SDS surfactant or without surfactant.
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