Judul: Population Structure of Madura Cattle in Burneh Sub-District Bangkalan District
Abstrak: Sapi madura merupakan salah satu sapi lokal Indonesia yang memiliki keunggulan daya adaptasi yang baik terhadap lingkungannya. Penelitian ini bertujuan mengkaji populasi sapi madura di Kecamatan Burneh Kabupaten Bangkalan. Sampel yang digunakan dalam penelitian ini adalah sapi madura di Desa Arok, Desa Perreng dan Kelurahan Tunjung. Penelitian ini dilakukan dengan metode survei dengan purposive sampling. Variabel yang dihitung dalam penelitian yaitu jumlah sapi jantan (Nm), jumlah sapi betina (Nf), jumlah sapi jantan dan betina muda, jumlah pedet jantan dan betina, ukuran populasi aktual (Na), ukuran populasi efektif (Ne), dan laju inbreeding (ΔF). Hasil penelitian menunjukkan jumlah populasi sapi madura di Kecamatan Burneh sebanyak 272 ekor, dengan struktur populasi sapi madura jantan dewasa sebanyak 8 ekor (2,94%), betina dewasa sebanyak 208 ekor (76,47%), jantan muda sebanyak 3 ekor (1,10%), betina muda sebanyak 16 ekor (5,88%), anak jantan sebanyak 12 ekor (4,41%) dan anak betina sebanyak 25 ekor (9,19%). Ukuran populasi aktual (Na) sapi madura adalah 216 ekor. Ukuran populasi efektif (Ne) sapi madura adalah 30 ekor. Laju inbreeding sapi madura di Kecamatan Burneh adalah 1,67%., Madura cattle is one of the Indonesia’s local cattle that have been the advantage of good adaptability to their environment. This study aims to examine the population of madura cattle in Burneh sub-district, Bangkalan district. The samples used in the research were madura cattle in Arok village, Perreng village and Tunjung urban village. This research conducted was survey method with purposive sampling. The variables were calculated in the study, namely the number of bulls (Nm), number of cows (Nf), number of bulls and heifer, number of male and female calves, actual population size (Na), effective population size (Ne), and the rate of inbreeding (ΔF). The results showed that the total population of madura cattle in Burneh sub-district is 272 heads of cattle, with a population structure of 8 bulls (2,94%), 208 cow (76,47%), 3 bulls (1,10%), 16 heifer (5,88%), 12 male calves (4,41%) and 25 female calves (9,19%). The actual population (Na) of madura cattle is 216 heads of cattle. The effective population of madura cattle is 30 heads of cattle. Rate of inbreeding of madura cattle in Burneh sub-district is 1,67%.
Keyword: madura cattle, population structure, rate of inbreeding, population structure, rate of inbreeding, madura cattle

Judul: Morphometric Comparison of Female Local Crossbred in Different Age Groups in The Wadung Village of Tuban District
Abstrak: Sapi silangan lokal merupakan sapi hasil persilangan antara bangsa sapi lokal dengan bangsa sapi impor yang diharapkan sapi memperoleh sifat-sifat yang diinginkan sehingga banyak dikembangkan di Indonesia, terutama di Kabupaten Tuban. Tujuan dari penelitian ini menganalisis perbandingan morfometrik sapi silangan lokal betina pada berbagai kelompok umur di Desa Wadung, Kabupaten Tuban. Metode penelitian ini menggunakan analisis deskriptif dan analisis Uji T. Parameter tubuh yang diukur meliputi panjang badan, tinggi badan, lebar dada, dalam dada, lingkar dada, tinggi panggul, lebar panggul, panjang kepala, dan lebar kepala. Perhitungan rasio tubuh dan indeks morfometrik juga dilakukan. Selain itu, perbandingan dengan standar yang berlaku juga dilakukan. Hasil pengukuran morfometrik menunjukkan terdapat perbedaan pada parameter tinggi panggul umur I2 (>24 - 36 bulan) yang lebih tinggi sapi silangan limousin betina. Sedangkan perbandingan rasio ukuran tubuh dan indeks morfometrik sapi tidak terdapat perbedaan sehingga kedua sapi memiliki proporsi tubuh yang seimbang. Sapi silangan simmental dan silangan limousin sudah mencapai standar kuantitatif bibit pada umur I1 (18 - 24 bulan), namun pada umur I0 (< 18 bulan) masih dibawah standar kuantitatif bibit., The local crossbred cattle are the crossroads between local cattle and imported cattle, which are expected to acquire the desired characteristics so that they are developed in Indonesia, especially in Tuban district. The purpose of this study is to analyze the morphometric comparisons of local female cattle in different age groups in Wadung Village, Tuban District. This method of research uses descriptive analysis and analysis T. The body parameters measured include body length, height, chest width, chest depth, chest circumference, hip height, hip width, head length, and head width. Calculation of body ratio and morphometric index is also done. In addition, comparisons with the applicable standards are also carried out. The morphometric measurement results showed that there was a difference in the high pelvic parameters of the I2 age (>24 - 36 months) of the higher female limousine cattle. While comparing the ratio of body size and the morphometric index of cows there is no difference so that both cows have balanced body proportions. Simmental cross cattle and limousine cross cattle have reached the quantitative standard of sowing at the age of I1 (18-24 months), but at age I0 (<18 months) they are still below the qualitative standard for sowing.
Keyword: age group, cows, crossbred cattle, morphometric

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4