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红树林人工湿地基质微生物活性研究
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作者 杨琼 李凤兰 +2 位作者 李刚 蓝崇钰 谭凤仪 《海洋技术》 北大核心 2013年第3期81-86,共6页
以占地近400 m2的潜流型红树林人工湿地中试系统为研究对象,阐述了人工湿地表层基质(0~5 cm)微生物生物活性和生物量碳含量在不同植物、不同水平距离和不同运行时间的分布变化规律。结果表明:微生物生物量碳在近入水口处含量较高,在温... 以占地近400 m2的潜流型红树林人工湿地中试系统为研究对象,阐述了人工湿地表层基质(0~5 cm)微生物生物活性和生物量碳含量在不同植物、不同水平距离和不同运行时间的分布变化规律。结果表明:微生物生物量碳在近入水口处含量较高,在温度较高的运行阶段(2007年8月)高于温度较低的运行阶段(2006年11月和2007年12月),且桐花树湿地带基质中的含量显著高于其它两条湿地带;海桑湿地带基质微生物的呼吸强度和代谢系数均高于其它湿地带,代谢系数在远离入水口之处较高,可能与此处营养物质较少,微生物易受到营养胁迫有关。 展开更多
关键词 红树林 人工湿地 微生物生物量碳 土壤呼吸强度 代谢系数
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Calculation of Empirical and True Maintenance Coefficients by Flux Balance Analysis 被引量:2
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作者 马红武 赵学明 郭晓峰 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2002年第1期89-92,共4页
The stoichiometric matrix of a simplified metabolic network inBacillus Subtillis was constructed from the flux balance equations,which were used for reconciliation of the measured rates anddetermination of the inner m... The stoichiometric matrix of a simplified metabolic network inBacillus Subtillis was constructed from the flux balance equations,which were used for reconciliation of the measured rates anddetermination of the inner metabolic rates. Thus more reliableresults of the true and empirical maintenance coefficients wereobtained. The true maintenance coefficient is linearly related to thespecific growth rate and changes with the P/O ratio. The measuredbiomass yield of adenosine triphosphate (ATP) is also linearlyrelated to the P/O ratio. 展开更多
关键词 maintenance coefficient flux balance analysis metabolic network biomass yield
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A NEW TYPE OF PRONORMAT SUBGROUPS IN CHEVALLEY GROUPS
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作者 WANG DENGYIN Department of Mathematics, Anhui University, Hefei 230039, China. 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2001年第2期243-248,共6页
Let L be a simple Lie algebra with irreducible root system. having roots of different length, F be a field of charaCteristic different from 2, G = L(F) be a Chevalley group of type L over F. Denote by Φl the set of a... Let L be a simple Lie algebra with irreducible root system. having roots of different length, F be a field of charaCteristic different from 2, G = L(F) be a Chevalley group of type L over F. Denote by Φl the set of all long roots in Φl Set Gl = <xr (t); f∈EΦl,t∈F>. It is a subgroup of G generated by all the long root subgroups. This paper determines the pronormality of Gl in G when L is not of type G2. 展开更多
关键词 Chevalley groups Root systems Pronormal subgroups
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