Judul: Rate of soil loss md soil quality on caffee-based farming system at Sumberjaya, West Lampung.
Abstrak: Coffee-based farming has benn perceived by policy makers as causing a high erosion rate and as a source of sedimentation. Past approach to control erosion and restore forest function has been on eviction of the farmers from the forest jurisdiction area and forceful replacement of coffee plants with timber or leguminous tree species such as kaliandra (Calliandra calothirsus).Thih was done because of the myths that forest function restoration can only be done by reforestation by forestry trees. The objectives of this study were to evaluate: (1) The rate of erosion on steep slope coffee-farm with different soil conservation measures, (2) the dominant factors that effect the rate of erosion, (3) impact of forest canversion to coffee farm based on soil quality changes. Three experiments were conducted at Sumberjaya Sub-District, West Lampung District from November 200l -July 2003. Experiment I was aimed at quantifying the level of soil loss on 3 year old coffee farm with slopes ranging from 50 to 60% at Dusun Laksana and Tepus.
Keyword: 

Judul: Thee development of coffee based farming systems for sustainable upland agriculture development in upper Sekampung Watershed.
Abstrak: Land degradation is a serious problem in the Upper Sekampung watershed because the farmers cultivated coffee based farms on steep land without adequate soil and water conservation technologies and fertilization. Land degradation caused by erosion was generally greater than the local tolerable soil loss. Erosion on site washed the most fertile top soil, decreased land productivity and in turn declined farmer’s income. The existing condition of coffee based farming systems in the Upper Sekampung watershed was suspected perform unsustainable farming systems indicators.
Keyword: conservation technology, Land degradation, biophisics conditions, erosion rate

Judul: Kimiawi imunoglobulin G serta perbedaabbya antara berbagi species hewan
Abstrak: Antibodi adalah molekul protein yang dihasilkan oleh sel plasma sebagai akibat interaksi antara limfosit B peka antigen dengan antigen khusus. Antibodi ini disebut juga imunoglobulin karena molekulnya berbentuk globulin. Jadi imunoglobulin merupakan molekul protein yang membawa akti- vitas antibodi, yaitu sifat kombinasi spesifik dengan zat yang mendatangkan formasi antigen. Diantara kelas imunoglobulin, Ig G adalah yang paling melimpah dalam serum darah. Ig G ini memainkan peran utama dalam mekanisme pertahanan. Ig G merupakan struktur glikoprotein dengan dasar bentuk bangunan diagram tetrapolipeptida yang mengandung 4 ran tai polipeptida dengan 2 rantai berat (H) yang identik dan 2 rantai ringan L) yang identik. Rantai polipeptida ini di bentuk oleh rangkaian asam amino. Tiap rantai berat (H) me ngandung 446 residu asam amino dengam BM (2 x 50.000) Dal ton dan tiap rantai ringan (L) mengandung residu asam amino 213() atau 214 () dengan BM (2 x 25.000) Dalton. Bagian variabel dari rantai berat (VH) mengandung 118 residu asam amino dan bagian variabel rantai ringan (VL) mengandung 108 () atau 109 () residu, sedangkan residu sisanya dari masing-masing rantai adalah bagian konstan (CH dan CL). Adanya perbedaan-perbedaan dalam hal asam amino pada salah satu daerah variabel dapat menyebabkan perbedaan imun respon. ...
Keyword: