Judul: Studi korelasi berat badan, jarak pubis, panjang abdomen dan panjang shank terhadap produksi telur pada puyuh (Coturnix coturnix japonica)
Abstrak: The aim of this research is to examine whether quail's egg production can be measured by observing phenotypic characteristic. Eggs' length, width, and weight, de from quail's body weight, distance between pubic bones, length of abdomen. and length of shank were measured as variables. The measurement of eggs" variables are conducted each day. while in the case of quails these are done each week. The results were analyzed statistically.
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Judul: Performa Produksi dan Kualitas Telur Puyuh (Coturnix-coturnix japonica) pada Kepadatan Kandang yang Berbeda
Abstrak: Stocking density is one of important environmental factor which is need to be considered in generating good production and quality of japanese quail (Coturnix-coturnix japonica) egg. This study was aimed to investigate the effects of various stocking density and determine the most optimum cage density on production and quality of quail egg. A total of 135 of japanese quails were used in this study. The quails were kept in cages with a stocking density of 12 birds, 15 birds, and 18 birds on 62 x 50 x 26 cm cages and each level of treatment consisted of 3 replications. Feed consumption, feed conversion ratio, hen day egg production, average egg weight, and mortality rate were recorded. Egg weight, shell weight, shell thickness, yolk colour, Haugh Unit (HU), and yolk index were also investigated. The obtained data were analyzed by using Analysis of Variance (ANOVA). Data of hen day production and feed conversion were presented descriptively. All traits were not different among treatments. The quails were kept in cages with a stocking density of 12 birds revealed the most optimum egg production according to the data of hen day production and feed conversion.
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Judul: Komposit Polisulfon Tersulfonasi-Montmorilonit Untuk Aplikasi Membrane Electrode Assembly Direct Methanol Fuel Cell.
Abstrak: Membran merupakan salah satu komponen penting dalam aplikasi direct methanol fuel cell (DMFC), yang berfungsi sebagai sarana penukar proton. Penelitian bertujuan membuat dan mencirikan komposit polisulfon tersulfonasi-montmorilonit (sPSf-mont) untuk aplikasi membrane electrode assembly (MEA) DMFC. Membran polisulfon tersulfonasi dibuat menggunakan oleum pada suhu 40 oC. Kesuksesan sulfonasi dicirikan dengan derajat sulfonasi sebesar 32.63%, ditambah pada spektrum spektrofotometer inframerah transformasi fourier menunjukkan serapan –SO3 di area 1110-1350 cm-1 dan 2000-1667 cm-1. Montmorilonit dikompositkan dengan 2 ragam konsentrasi, yaitu 2% dan 3%. Didapatkan sPSf-mont 3% sebagai membran dengan daya serap air dan titik leleh tertinggi 28.75% dan 553.51 oC. Pengukuran konduktivitas dan uji aplikasi DMFC menunjukkan MEA sPSf-mont 3% sebagai membran dengan konduktivitas dan beda potensial tertinggi, yaitu berturut-turut 11.1280 mS/cm dan 114.1 mV. Tambahan komposit dan modifikasi MEA telah meningkatkan konduktivitas proton membran dengan komposisi terbaik adalah MEA sPSf-mont 3%.
Keyword: MEA, montmorilonit, polisulfon tersulfonasi, sel bahan bakar