Judul: Spatial distribution of net primary production (NPP) using modis data and correlation with climate variability
Abstrak: The most important global interactions between the biosphere and atmosphere involve the transfer of energy, water, and carbon. Carbon is assimilated by the biosphere through photosynthesis and released through autotrophic and heterotrophic respiration. Net Primary Production (NPP) is the net carbon fixed by vegetation through photosynthesis. NPP provides the carbon required for maintenance of the structure and functions of an ecosystem. NPP can be used in the term of net biomass accumulation to express the net flux of carbon between the atmosphere and terrestrial vegetation. NPP is a fundamental ecological variable, not only because it measures the energy input to the biosphere and terrestrial carbon dioxide assimilation, but also because of its significance in indicating the land surface area and status of a wide range of ecological process.
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Judul: Pendugaan NPP (Net Primary Production) Ekosistem Rutan Di Sumatera Barat, Riau dan Jambi Dengan Memanfaatkan Data Noa/Avrrr
Abstrak: The increasing greenhouse gases in the atmosphere, especially CO2• from a period before industrialization to date have resulted in of global warming. International agreement (UNCED 1992, UNFCCC 1994, Protocol Kyoto 1997) have urged nations in the world for active cooperation in reducing concentration of greenhouse gases in atmosphere at storey level which do not endanger for earth. Tropica1 forest represent ecosystem biggest absorber of CO:! (Malhi el at.,I999). Indonesia has a large area of wide tropical forest therefore. will have big contribution in reducing CO:!. NPP (Net Primary Productivity) representing one of method in measuring the ability ecosystem in penneating carbon in atmosphere (June, 2003). Value ofNPP shows accumulation of net CO2 within a one year (gram Carbonlm IN ear) period. It is defined as the difference between total carbon uptake through photosynthesis and losses (through maintance or growth respiration). This research will estimate NPP of spatially from satellite NOAA! A VHRR during year 1996·2000 for West Sumatra, Riau and lambi. Nonnalized Difference Vegetation Index (NDVI) derived from the NOAA·14 AVHRR satellite data were
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Judul: Telaah Histopatologi Urolithiasis Pada Kucing
Abstrak: Urolithiasis adalah suatu keadaan dimana ditemukannya batu di dalam saluran urinaria. Batu tersebut dibentuk dalam pelvis ginjal dan bergerak turun sepanjang ureter kemudian masuk ke dalam vesika urinaria dan uretra. Penulisan ini bertujuan untuk mempelajari lebih dalam secara histopatologi tentang kasus kematian seekor kucing dengan urolithiasis yang dinekropsi di Laboratorium Patologi FKH-IPB. Pemeriksaan patologi anatomi menemukan adanya fokal atelektasis paru, dilatasi ventrikel kiri jantung, hidrothoraks, hidroasites, ginjal pueat dan batu-batu berbagai ukuran dengan diameter 0,1-0,5 em pada vesika urinaria yang berdarah. Pada pengamatan histopatologi menunjukkan pembendungan semua organ, nephritis interstitialis kronis disertai bentukan mikrokista dan endapan mineral pada lumen tubuli dan sistitis nekrotik disertai pendarahan yang meluas. Pemeriksaan pada organ paru-paru ditemukan lumen alveolus sebagian mengempis dan sebagian lagi meluas. Dinding alveol menebal akibat adanya akumulasi eritrosit. Sedikit koloni bakteri tampak dalam lumen usus, bercampur dengan epitel usus yang terlepas di ujung viii. Hati mengalami pembendungan, ruangan sinusoid tampak meluas. Beberapa megakariosit tampak di dalam pulpa merah yang menunjukkan adanya aktivitas hematopoetis. Organ jantung tidak menunjukkan adanya perubahan histopatologi yang spesifik.
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