Judul: Reduksi senyawa nitrogen, fosfor, konstituten organik, dan TSS pada air lindi limpasan dengan rawa buatan
Abstrak: Air lindi merupakan suatu jenis bahan pencemar yang memiliki potensi tinggi untuk mencemari lingkungan Beberapa karakeristik umum yang terdapat pada air Iindi adalah kandungan ammonia, fosfor, bahan organik, dan SS yang tinggi. Untuk mengurangi kandungan bahan pencemar pada air lindi, perlu dilakukan proses pengolahan terhadapnya. Rawa buatan (constructed wetlands) adalah salah satu alternatif teknologi pengolahan yang dapat diterapkan. Pada penelitian ini dicobakan kemampuan suatu sistem Vertical Up-Flow Constructed Wetlands (WFCW) dalam menurunkan beban senyawa N, P, konstituen organik, dan TSS dalam air lindi limpasan. Jenis tumbuhan yang digunakan dalam Sistem VUFCW ini adalah Cunna, Hydrilla, dan Nymptaea. Tumbuhan ini ditanam pada tiga buah bak rawa buatan (CW-Beds) yang disusun sen.
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Judul: Percepatan pematangan kompos dengan bantuan air lindi sampah
Abstrak: Pembuangan sampah yang dilakukan secara open dumping (pembuangan secara terbuka di atas tanah) pada TPA (tempat pembuangan akhir) dengan berjalannya waktu melalui proses degradasi sampah dapat menghasilkan suatu cairan yang disebut air lindi (leachate). Komposisi air lindi dipengaruhi oleh beberapa faktor seperti jenis sampah, jumlah curah hujan di daerah TPA dan kondisi tempat pembuangan sampah. Air lindi umumnya mengandung senyawa organik (hidrokarbon, asam humat, hlfat, tanat dan galat) dan anorganik (natrium, kalsium, kalium, magnesium, klor, sulfat, nitrogen dan beberapa senyawa logam berat) yang tinggi. Kandungan air liidi tersebut berpotensi untuk dianfaatkan salah satunya sebagai bahan tambahan unsur hara (starler) pada proses pengomposan.
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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