Judul: Percobaan netralisasi limbah cair industri tapiloka dengan cara koagulasi dan aerasi
Abstrak: Penelitian ini bertujuan untuk menetralkan limbah cair industri tapioka dengan tiga macam "treatment" dan enam taraf lama penyimpanan. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok dengan percobaan faktorial, terdiri dari dua faktor masing-masing tiga dan enam taraf dengan dua ulangan yang merupakan kelompok. Faktor pertama terdiri dari limbah cair tanpa "treatment" (A), limbah cair yang dikoagulasi (A₁) dan limbah cair yang diaerasi (A2). Faktor kedua terdiri dari penyimpanan O hari (B), penyimpanan 2 hari (B₁), penyimpanan 4 hari (B2), penyimpanan 6 hari (Bz), penyimpanan 8 hari (B₁₄) dan penyimpanan 10 hari (B5). Pengamatan dilakukan terhadap suhu limbah cair, pH, kekeruhan, total padatan tersuspensi, "Dissolve Oxygen" (DO), "Biochemical Oxygen Demand" (BOD), oksigen yang diabsorb dari KMnO, selama 4 jam, Bahan Organik Total (BOT), karbon di- oksida (CO2) dan asam sianida (HCN). Suhu limbah cair selama pengamatan berkisar antara 20 27 °C, suhu udara 24 30 °C, pH 3,676,69, kekeruhan 2154-4983 (mg/1 S102), total padatan tersuspensi 16,52 216,55 mg/1, DO 0,0... 4,8 mg/1, BOD 1024 1584 mg/1, ok- sigen yang diabsorb dari KMnO4 60,18 406,80 mg/1, BOT 416,195158,14 mg/1, CO2 7,99 419,50 mg/l dan HCN 7,5664,80 mg/1.
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Judul: Netralisasi Limbah Cair Industri Tapioka secara Biofiltrasi dengan Menggunakan Enceng Gondok (Eichhornia crassipes) dan Kapu - Kapu (Salvinia molesta)
Abstrak: Penelitian i n i dilakukan dengan t u juan mempela jari aspek netralisasi limbah cair industri tapioka secara biofiltrasi dalam rangka mdestarikan tata guna air di perairan. Rancangan percobaan yang digunakan adalah rancangan split plot , terdiri dari dua faktor.Faktor pertama adalah waktu detensiter diri dari empat taraf , yaitu 0 hari , 2 hari, 4 hari , dan 6 hari . faktor kedua adalah persentase penutupan kolarn oleh tumbuhan, terdiri dua taraf yaitu 50 persen dan 100 persen (pada kolam enceng gondok &an kolam kapu-kapu) atau 50 persen dan 0 persen +(kolarn enceng gondok-kapu-kapu dan kontrol ).
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Judul: Studies on growth spurt and aging in higher primates
Abstrak: single measurement that best defines the health and nutritional status of children, just as it provides an indirect measurement of the quality of life of an entire population. The pattern of human growth reflects the biocultural evolution of our species. The human pattern of growth and development (ontogeny) appears to differ markedly from patterns of ontogeny in other primate species. Three studies are reported here which deal to the growth and development of human and chimpanzee (Pan troglodytes). These three studies allow us to contrast the phenomena of adolescence growth spurt and female elderly bone loss in chimpanzee and human as chimpanzee is the closest species to humans within extant nonhuman primates. In the first, a cross-sectional study of growth of the body size and somatotype of 363 Javanese girls and 299 Javanese boys aged 4 to 20 years from Magelang Regency, Indonesia was described. In the second, cross-sectional and longitudinal studies in the growth of chimpanzee second metacarpal bone linear dimensions from individuals aged 0 to 43.6 years were used for comparison. While in the third, cross-sectional and longitudinal studies in the growth of chimpanzee body size (body mass and anterior trunk length) and second metacarpal bone mineral content were derived. In measuring the second metacarpal dimensions and mineral content, a total of 568 radiographs of chimpanzee's proximodistal left hands were used. They were taken from 68 females and 49 males aged 0 to 43.62 years old. We applied an image analysis system, Scion Image Release Alpha 4.0.3.2 software for Windows to measure bone linear dimensions and bone mineral content. Humans present complex and sinuous growth curves for both body weight and height. A clear growth spurt could be demonstrated by cross-sectional analysis in our girl subjects at around aged 11.5 years and in our boy subjects at around aged 12.5 years. In longitudinal series, not in cross-sectional, several representative chimpanzees of both sexes showed a pre-adult growth spurt on the body sizes, bone dimensions and bone mineral content. They ranged at age 4.5 to 8.5 years. This underscore the fact that adolescent growth spurt in linear dimension was not a universal feature of anthropoid primate ontogeny. Bone loss is a well established characteristic of human female aging. Based on crosssectional analyses the sequential decline of bone mass in female chimpanzee may be said to be genuine. On the other hand, we found in adulthood through elderly, male chimpanzees show a longer plateau than female chimpanzee, that is, bone mineral content is maintained in male.
Keyword: Javanese children, growth spurt, chimpanzee, second metacarpal bone, bone loss, Higher Primates