Judul: Variasi morfologi ayam kampung jantan dewasa
Abstrak: Gallus domesticus is native chicken which had been domesticated from wild chicken. In Indonesia, they usually called ayam kampung. Morphology of different kinds of ayam kampung is imuniform because they were result of interbreeding from many kinds of wild chickens. This research was conducted to study morphology variation of mature male native chicken using morphometric methods.
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Judul: Genetic Observation of the External Body of Local Breed Chickens (Gallus gallus domesticus) in Various Districts
Abstrak: Ayam kampung (Gallus gallus domesticus) merupakan ayam asli Indonesia yang pada saat ini telah tercemar dengan gen ayam ras unggul Eropa terutama ayam yang dipelihara secara ekstensif tradisional. Penelitian ini bertujuan menghitung keaslian ayam kampung di berbagai wilayah kecamatan di Kabupaten Kulon Progo dan Kabupaten Bogor. Karakteristik genetik eksternal yang diamati adalah warna bulu, pola bulu, corak bulu, kilau bulu, warna shank, dan bentuk jengger. Karakteristik tersebut dianalisis menggunakan analisis frekuensi gen dominan dan resesif otosomal, analisis frekuensi gen alel ganda, analisis frekuensi gen dominan dan resesif tertaut seks, analisis frekuensi kandungan gen ayam kampung asli Indonesia, dan analisis frekuensi gen asli. Hasil penelitian menunjukkan ayam kampung di Kecamatan Galur, Kecamatan Panjatan, Kecamatan Megamendung, dan Kecamatan Cibungbulang memiliki tingkat keaslian kurang dari 50%. Ayam kampung di Kecamatan Cibungbulang memiliki tingkat keaslian paling rendah, sedangkan ayam kampung di Kecamatan Panjatan memiliki tingkat keaslian paling tinggi pada penelitian ini., Kampong chicken (Gallus gallus domesticus) is an indigenous Indonesian chicken that is currently contaminated with genes of European superior breeds of chickens, especially chickens that are reared extensively traditionally. This study aims to quantify the authenticity of native chickens in various districts in Kulon Progo Regency and Bogor Regency. The external genetic characteristics observed were feather color, feather pattern, feather pattern, feather luster, shank color, and cockscomb shape. These characteristics were analyzed using autosomal dominant and recessive gene frequency analysis, double allele gene frequency analysis, sex-linked dominant and recessive gene frequency analysis, gene content frequency analysis of Indonesian native chickens, and native gene frequency analysis. The results showed that native chickens in Galur Subdistrict, Panjatan Subdistrict, Megamendung Subdistrict, and Cibungbulang Subdistrict had an authenticity level of less than 50%. The native chicken in Cibungbulang subdistrict has the lowest level of authenticity, while the native chicken in Panjatan subdistrict has the highest level of authenticity in this study.
Keyword: Ayam kampung, keragaman, frekuensi gen, kualitatif

Judul: Pembuatan Film Tipis Cu2ZnSnS4 sebagai Lapisan Penyerap Cahaya pada Sel Surya Menggunakan Metode Elektrodeposisi
Abstrak: Thin film of Cu2ZnSnS4 (CZTS) is an alternative semiconductor used as light absorber layer on solar cell. CZTS can replace silicon that commonly used as commercial semiconductor. The advantage of using CZTS as absorber layer is due to the abundance of its chemical composer on earth, and its high value of absorption coefficient. The absorber layer was made by using electrodeposition method on ITO glass substrates. The films were deposited at room temperature using potentiostatic mode with a potential of –1.05 V for 30, 45, and 60 minutes. After that, the films were annealed at two different temperatures, 180 ºC and 500 °C, for 45 minutes in N2/H2S atmosphere. Based on X-ray diffraction analysis, the polycrystalline thin film obtained fall into kesterite crystal phase. This type of crystal was obtained when the CZTS was annealed at 500 °C in H2S/N2 atmosphere. The value of optical band gap energy for the CZTS thin film was 2.2 eV with the film thickness about 1.228–6.366 μm. The sample of CZTS with electrodeposition time of 45 minutes and annealing temperature of 500 °C showed the best result and in conformity with absorber layers criteria for solar cells.
Keyword: semiconductor, ITO glass, CZTS thin film, electrodeposition