Judul: Pengaruh pengukusan kayu kering terhadap penembusan bahan pengawet CA
Abstrak: Salah satu faktor yang perlu diketahui dalam pengawetan ialah sifat keterawetan kayu. Pengawetan bagi jenis kayu dengan kelas keterawetan mudah dan sedang kemungkinan besar tidak akan mengalami kesulitan yang berarti. Akan tetapi untuk jenis kayu dengan kelas keterawetan sukar sampai sangat sukar, perlu adanya per- lakuan pendahuluan sebelum kayu itu diawetkan. Perlakuan pendahuluan seperti yang dinyatakan Hunt dan Garratt (1967) dapat dilakukan dengan pencacaran, pengukusan dan perebusan. Tujuan penelitian ini ialah untuk mengetahui pengaruh pengukusan kayu kering udara terhadap penembusan bahan pengawet CCA.
Keyword: Pengaruh pengukusan kayu kering terhadap penembusan bahan pengawet CA, Blandong sarad

Judul: Pengaruh suhu pengeringan ulang terhadap sifat mekanis kayu afrika (Maesopsis Eminii Engl.) yang diawetkan dengan CCA
Abstrak: Pengawetan merupakan usaha meningkatkan keawetan kayu dengan jalan memasukkan bahan kimia ke dalamnya. Perkembangan teknologi pengawetan kayu menghasilkan banyak penemuan jenis bahan pengawet. Salah satu jenis bahan pengawet yang mempunyai efektivitas dan daya racun yang tinggi terhadap perusak biologis pada kayu adalah Copper Chrom Arsenic (CCA). Perlakuan tambahan dalam impregnasi bahan pengawet seperti pengeringan dapat menurunkan sifat mekanis kayu. Selain dipengaruhi oleh suhu dan proses pengeringan, besarnya penurunan sifat mekanis kayu ini dipengaruhi juga oleh species, ukuran dan kondisi kayu. Tujuan penelitian ini adalah untuk melihat seberapa jauh pengaruh suhu pengeringan ulang terhadap sifat mekanis kayu Afrika (Maesopsis eminii Engl.) yang diawetkan dengan CCA. Sifat mekanis yang diteliti adalah modulus patah (MOR), modulus elastisitas (MOE), keteguhan tekan sejajar serat (MCS), keteguhan tarik tegak lurus serat dan keteguhan tarik sejajar serat.
Keyword: pengawet kayu

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