Judul: Analisis kelayakan finansial penerapan modifikasi sistem microcatchment pada usahatani lahan kering
Abstrak: Air hujan merupakan satu-satunya sumber air yang sangat diperlukan pada pertanian lahan kering. Air hujan pada lahan kering yang tidak terkontrol akan menimbulkan masalah degradasi lahan karena tingginya tingkat erosi dan aliran permukaan. Untuk itu perlu adanya teknologi tepat guna yang secara efektif mampu meresapkan dan menyimpan air hujan sebagai surnber air sekaligus mencegah terjadinya degradasi lahan yang diakibatkan oleh jatuhnya air hujan. Salah satu teknologi yang diharapkan mampu memanfaatkan air hujan dan mengendalikan aliran permukaan adalah sistem microcatchment. Microcatchment dapat dibatasi dengan membuat saluran dan guludan, serta dapat dimodifikasi dengan pemberian mulsa vertikal untuk lebih mengefektiflcan jumlah aliran permukaan yang tertampung dan diresapkan. Setiap penerapan teknologi termasuk modifikasi sistem microcatchment memerlukan pengujian secara finansial untuk menentukan layak tidaknya teknologi tersebut diterapkan.
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Judul: Pengendalian aliran permukaan dengan modifikasi sistem microcatchment pada pertanian lahan kering berlereng
Abstrak: Increase in population has led to the increased in demand for farm land. Erotion is one important factor causing land degradation in sloping upland agriculture. Microcatchment is one of water harvesting technology develooped in arid regions.
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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