Judul: Lintasan Pertumbuhan dari Ukuran Tubuh Orang Baduy
Abstrak: The measurenment of body size is the best way to find out the health, nutritional status and quality of life of a population. Many indigenous populations that are local, scattered, and less or not involved in the network of social services, economic and politics, have specific growth trajectories. Baduy people are indigenous population which is more-or-less socially isolated. Marriage is restricted among Baduy people only. Present study aims to determine the growth trajectory of female and male of Baduy people with cross-sectional method. Body size of Baduy people may be categorized as same size as pygmy population. They have a slow growth rate at child to juvenile transition, low and long growth spurt with prolonged growth well beyond reproductive maturation. Low growth spurt, which leads to small body size in the growing period, may be a saving on body maintenance costs. Prolonged somatic growth offset the slow growth rate at child to juvenile transition and low growth spurt. Baduy people older than 30 year are shorter and smaller than younger people, suggesting secular trend.
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Judul: Pola Pertumbuhan Pria Usia 4 sampai 21 Tahun di Suku Baduy, Desa Kanekes, Kecamatan Leuwidamar, Kabupaten Lebak, Banten
Abstrak: Growth is an increasing process of body size that follow a predictable pattern. Body size can be determined by calculating the Body Mass Index (BMI), which is the ratio of weight (kg) and the square of statures (m2). The growth pattern can be determined by connecting the median of each class of age. The research purpose was to find the body size growth pattern of male aged 4 to 21 years old in Suku Baduy. Even so, the growth velocity curve start at the same time, the statures growth velocity curve reach the peak first, then so do latter the weight growth velocity curve. The peak of BMI growth velocity curve happened in the age of 13 years old with the growth velocity was 0.804 kg/m2 per year. Based on the BMI value, the body size of male in Suku Baduy was small. This thing was happened due to the high level of physical activities.
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Judul: Rakitan elektrode membran komposit polisulfon tersulfonasi-zeolit teraktivasi untuk aplikasi sel bahan bakar metanol langsung
Abstrak: Penelitian ini menyintesis dan mencirikan rakitan elektrode membran (MEA) dari komposit polisulfon tersulfonasi-zeolit teraktivasi (PSfs-Z). Sulfonasi telah berhasil dilakukan yang dibuktikan dengan nilai derajat sulfonasi sebesar 32.63% dan serapan pada bilangan gelombang 1740.15 cm-1 yang menyatakan bahwa ada gugus sulfonat yang tersubstitusi 1,2,4,- pada posisi orto-. Membran komposit diperoleh dengan menambahkan zeolit teraktivasi. Hasil yang optimum ditunjukkan oleh aktivasi dengan HCl 3 N. Keberhasilan pembuatan MEA terlihat dari morfologinya yang dicirikan menggunakan mikroskopi elektron payaran dengan terbentuknya lapisan katalis dan membran pada penampang lintang. Nilai konduktivitas proton dan beda potensial tertinggi yang diperoleh MEA PSfs-Z 3 N berturut-turut 17.27×10-3 S/cm dan 330 mV. Dengan demikian, dapat disimpulkan bahwa MEA dari komposit PSfs-zeolit teraktivasi dapat diaplikasikan untuk DMFC.
Keyword: activated zeolite, fuel cell MEA, sulfonated polysulfone