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挥发性脂肪酸在拮抗艰难梭菌定居菌群屏障中的作用 总被引:1,自引:0,他引:1
苏文金 《厦门大学学报(自然科学版)》1989,28(6):651-656
应用气相色谱技术分析几种不同动物盲肠内含物中的挥发性脂肪酸(VFA)浓度,并检验了体内外VFA 对艰难梭菌的抑菌作用。结果表明严格厌氧菌是肠道VFA 的主要产生菌;单VFA 无法抑制艰难梭菌在肠道中的定居,必定还存在其他作用机制。 相似文献
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LI ChuanGang WANG KunLin WEI JinQuan WEI BingQing ZHU HongWei WANG ZhiCheng LUO JianBin LIU WenJin ZHENG MingXin WU DeHai 《科学通报(英文版)》2007,52(1):113-117
Carbon nanotube (CNT) bulbs made of decimeter-scale double-walled carbon nanotube (DWCNT) strands and films were fabricated and their luminescence properties, including the lighting efficiency, voltage-current relation and thermal stability were investigated. The results show that the DWCNT bulb has a comparable spectrum of visible light with tungsten bulb and its average efficiency is 40% higher than that of a tungsten filament at the same temperature (1400―2300 K). The nanotube filaments show both resistance and thermal stability over a large temperature region. No obvious damage was found for a nanotube bulb illuminating at 2300 K for more than 24 hours in vacuum. 相似文献
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JIA Yi WEI JinQuan SHU QinKe CHANG JianGuo WANG KunLin WANG ZhiCheng LUO JianBin LIU WenJin ZHENG MingXin WU DeHait 《科学通报(英文版)》2007,52(7):997-1000
A single-layer double-walled carbon nanotube (DWNT) membrane, with 100 cm2 in area, 50 nm in thickness, was spread by adding a few drops of ethanol (or acetone) on the purified DWNTs. Compared with acetone, ethanol is more efficient in spreading DWNT films. The spreading rate of DWNT mem-brane increases with the ethanol concentration, and it also first increases with temperature (below 60℃), then decreases as the temperature rises to above 60℃. 相似文献
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