Judul: IPB (Bogor Agricultural University)
Abstrak: Methane (CH,) is one of reactive greenhouse gases, its current concentration in atmosphere is increasing with a rate of about 12 + 1 ppbvlyr. An increase of 12 ppbv requires an excess of sources over sinks of 36 Tglyr. Roughly 70% of the total global emission of atmospheric methane (500 f 100 Tglyr) stems from anthropogenic sources mainly from anaerobic decay of organic matter in rice fields and enteric fermentation in ruminants, and about 30% stems from natural sources mainly frcm wetlands. Rice fields are considered as one of important sources of methane emissions into the atmosphere. Estimates of methane from this source show a wide range of 30 - 100 Tglyr with an average of about 60 Tglyr or around 18% of the total global methane emissions. There are large uncertainties about methane emission rates from wetland rice, these are due to the differences of agroclimatic condition and agricultural practices from one region to the others. Most studies on methane emission rates from rice fields are conducted in temperate regions, and practically no data are available from tropical regions. Those data obtained from temperate regions are used to extrapolate global methane emissions from rice fields.
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Judul: Methane Consumption (CH4) on Upland Rice Cultivation Under Micro Climate Cobdition With N Fertilizer Levels
Abstrak: Methane (CH4) is one of radiatively active trace gases or greenhouse gas, having strong absorbsivity to the infrared outgoing radiation emitted by the earth's surface, hence causing the warming of the atmosphere. Methane concentration in the atmosphere increases with a rate of about 12+1 ppbv/yr, or 36 Tg/yr. The increase of methane was predicted to have a significant impact on the earth's climate. The presence of 1.3 ppmv of methane in the atmosphere causes the globally average surface temperature 1.30C higher than it would be with no methane.
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Judul: Profil Hematologi Selama Proses Kesembuhan Skin Flaps H-Plasty Dan Linear Closure Pada Kucing Lokal (Felis Catus).
Abstrak: Skin flaps merupakan salah satu prosedur bedah rekonstruksi untuk penutupan luka. Tujuan penelitian ini adalah melihat profil hematologi selama proses kesembuhan luka menggunakan teknik skin flaps H˗plasty dan linear closure pada kucing (Felis catus). Pembuatan luka dengan luas 2x2 cm dilakukan pada daerah toraks 6 kucing lokal jantan sehat yang dibagi kedalam dua kelompok. Penutupan luka dilakukan dengan teknik skin flaps H-plasty dan linear closure sesuai kelompok. Pengambilan darah sebanyak 1 ml dilakukan secara aseptis pada vena saphena pada hari ke˗0 pra operasi, hari ke˗3, 6, 9, dan 12 pasca operasi skin flaps. Hasil rata-rata jumlah SDM, hemoglobin, hematokrit, MCHC, dan trombosit tidak menunjukkan perbedaan signifikan (P>0.05) antar kelompok perlakuan H-plasty dengan linear closure. Berbeda dengan parameter MCV dan MCH yang menunjukkan perbedaan signifikan (P<0.05) antar kelompok perlakuan. Pengamatan rata-rata jumlah SDM, hemoglobin, hematokrit, MCV, MCH, MCHC dan trombosit menunjukkan perbedaan yang signifikan (P<0.05) diantara hari pengamatan. Kedua teknik skin flaps menunjukkan nilai rata˗rata jumlah profil hematologi yang fisiologis selama proses kesembuhan luka.
Keyword: H-plasty, kucing, linear closure, profil hematologi, skin flaps