Judul: Ukuran dan Bentuk Tubuh Kambing Perah Peranakan Etawah Di Peternakan Doa Anak Yatim Farm dan Cordero Farm
Abstrak: The study observed body size and shape variability of Etawah Grade dairy goat in Doa Anak Yatim Farm (DAYF) in Waru Tegal village, District Ciampea and Cordero Farm (CF) in Ciapus, Bogor. EG dairy goat consisted of 185 heads were divided into 97 heads in DAYF (45 males and 52 females) and 88 heads in CF (35 males and 53 females). Goat was not randomly selected (purposive sampling). Descriptive statistics indicated that body measurements of PE dairy goat in CF was higher and selected strict than in DAYF. T2-Hotelling showed highly significant (P<0.01) differences in linear measurements of body surface of EG dairy goat in DAYF and CF. Principal Component Analysis showed that the size discriminator of EG dairy goat in DAYF and in CF was similar, namely body length and chest circumference. Eigen vector of body length and chest circumference of EG dairy goat in DAYF were +0.528 and +0.550 respectively, and that of in CF were +0.476 dan +0.522 respectively. The possibility proportion of Ettawa and Local (Kacang) blood goats observed was the same. The range of PE goat size in DAYF obtained at 58.722 to 185.974 wider than those found in CF at 76.323 to 182.257. The shape discriminator of EG dairy goat in DAYF and CF was different. The shape discriminator of EG dairy goat in DAYF was 0.768, whereas that of body length in CF was 0.837. Clustered diagram showed that the body size will increase and its shape will change as the EG dairy goats from both farm are getting older.
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Judul: Ukuran dan Bentuk Kepala Kambing Peranakan Etawah (PE) Betina Dewasa di Tiga Peternakan.
Abstrak: This study aims to determine the size, shape and characteristics of head on goats in the Cordero, Pelaihari and Doa Anak Yatim Farms. The size and shape of the head is used to distinguish between groups morphometric characteristics of Etawah Grade Does. The variables of head measure is not noticed by the breeder, so goats adapt and have a distinctive appearance. The results of this study can be used as basic morphometric data of Etawah Grade does in Indonesia, and for the conservation. The variables measured were akrokranion-prosthion, basion-prosthion, the length of the lower jaw, head height, tuber facial left-right, nasion-rhinion, entorbitale left-right, euryon left-right dan supraorbitale left-right. The study used 90 data. The data analysis using descriptive, T2-Hotelling statistics and Principal Component Analysis were used to create clusters diagram and dendogram. Akrokranion-prosthion and basion-prosthion became discriminators of Etawah grade does head size in all three farms. Discriminatots of Etawah Grade does head shape on Cordero farm was nasion-rhinion, Pelaihari was head hight and supraorbitale, DAY Farm was euryon left-right. The data of linear measurement classified separated each other. Morphometric data of Etawah Grade does head on Cordero and DAY Farm were different class with Pelaihari.
Keyword: cluster, dendogram, Etawah Grade does, head morphometri

Judul: Sintesis Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) dengan Variasi Konsentrasi Sulfur pada Substrat Kaca ITO
Abstrak: Film tipis Cu2ZnSnS4 (CZTS) merupakan bahan alternatif semikonduktor sebagai lapisan penyerap cahaya pada sel surya. CZTS dapat menggantikan senyawa silikon yang biasa digunakan sebagai bahan penyusun semikonduktor komersial. Kelebihan CZTS sebagai lapisan penyerap cahaya ialah ketersediaan bahan yang berlimpah di alam dan nilai koefisien absorpsi yang tinggi. Film tipis CZTS dibuat dengan variasi konsentrasi larutan sulfur menggunakan metode sol- gel dan spin coating sederhana pada substrat kaca inidium timah oksida (ITO). Setelah itu, film dikeraskan pada suhu 550 °C, selama 60 menit dengan dialiri gas N2. Difraktogram sinar X menunjukkan bahwa film tipis CZTS yang terbentuk dari kedua sampel memiliki struktur kristal kasterit dengan persentase yang kecil dibandingkan literatur. Sampel dengan konsentrasi sulfur 6M memiliki jumlah persen kristal yang lebih tinggi, yaitu 13,257% dengan ketebalan film 3,726–4,732 µm, sedangkan sampel dengan konsentrasi 3M memiliki persentase 7,538%. Sampel film tipis CZTS dengan konsentrasi sulfur 6M memiliki energi celah pita sebesar 1,876 eV dan nilai koefisien absorpsi sebesar 29,49 × 104 cm-1 menunjukkan hasil terbaik dan sesuai dengan kriteria film tipis CZTS komersil.
Keyword: CZTS thin films, ITO glass, Semiconductors, Sol-gel, Spin coating