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characteristics of biodegradation
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  污染物降解特性
     Characteristics of biodegradation of refractory organic in coke plant wastewater
     焦化废水中难降解有机污染物降解特性
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  “characteristics of biodegradation”译为未确定词的双语例句
     Study on Characteristics of Biodegradation of Cypermethrin by Mixed Culture Microbe
     混合培养微生物降解氯氰菊酯的特性研究
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     Characteristics of Biodegradation Viscous Crude Oil and Its Genesis in Baiyinchagan Depression
     白音查干凹陷生物降解稠油特征及其成因
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     Kinetic Characteristics of Biodegradation of Organicsin Multi-vessel CSTR System
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     Study on Characteristics of Biodegradation of Fenpropathrin by Mixed Microbe
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     The characteristics of G.
     论文首先对语音编码的各种方案进行了比较,并对G.
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     characteristics;
     三、发展的特点;
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Geochemical analyses of crude oil trapped in the sandstone reservoir of the upper Es3 formation,well Leng 118 located in the Lengdong structural zone,Liaohe western depression show that i) the GC of n and isoalkanes in the oil do not have the characteristics of biodegradation;ii) Steranes and triterpanes are abnormally abundant in the saturated hydrocarbon fraction;and iii) high abundence of 17α(H)25norhopanes was detected in the oil.The characteristics of both biodegraded and nonbiodegraded...

Geochemical analyses of crude oil trapped in the sandstone reservoir of the upper Es3 formation,well Leng 118 located in the Lengdong structural zone,Liaohe western depression show that i) the GC of n and isoalkanes in the oil do not have the characteristics of biodegradation;ii) Steranes and triterpanes are abnormally abundant in the saturated hydrocarbon fraction;and iii) high abundence of 17α(H)25norhopanes was detected in the oil.The characteristics of both biodegraded and nonbiodegraded oil are shown in the same reservoir.It may be indicated that the reservoir has a history of twophasefilling of crude oils,ie.earlier oil emplaced in the reservoir was severely biodegraded,and then the later nonbiodegraded oil filled the same reservoir.

辽河油田西部凹陷冷东断裂带冷118井沙三段上部油藏中原油样品的地球化学分析表明,该油藏原油具降解和未降解的双重特征:①正构烷烃和类异戊二烯烃类的气相色谱分布没有遭受微生物降解的迹象;②饱和烃馏分气相色谱的总体分布显示甾类及五环三萜类相对丰度远高于正异构烷烃;③GC/MS检出了相当丰富的25降藿烷系列。这种降解和未降解的特征处于同一原油样品之中的现象,表明该油藏至少存在两期原油注入的历史:即早期注入油藏的原油遭受到严重的微生物降解作用后,又有未受微生物降解的原油注入该油藏。

According to physical property and geochemical characteristics of biodegradation viscous crude oil in Baiyinchagan Depression, it has been indicated that macroscopie characteristics of viscous crude oil is higher density, higher viscosity, higher soildifying point, lower saturation hydrocarbon content and small value of ratio of saturated hydrocarbon to arcomatic hydrocarbon; in microcosmic saturated hydrocarbon chromatogrom and biomarkers shows that viscous crude oil is two stages miscible oil,...

According to physical property and geochemical characteristics of biodegradation viscous crude oil in Baiyinchagan Depression, it has been indicated that macroscopie characteristics of viscous crude oil is higher density, higher viscosity, higher soildifying point, lower saturation hydrocarbon content and small value of ratio of saturated hydrocarbon to arcomatic hydrocarbon; in microcosmic saturated hydrocarbon chromatogrom and biomarkers shows that viscous crude oil is two stages miscible oil, and maturity is from low to maturer. By the use of stable isotope technology, density of viscous crude oil of well Da 6 has been resumed. According to characteristics of biomarkers and physical property of viscous crude oil, it could be divided into three classes. This offers reliable basis for understanding hydrocarbon potential and making exploration decisions in this area.

对白音查平凹陷生物降解稠油物性及地化特征进行研究,认为该凹陷稠油宏观上具有密度、粘度、凝固点高,饱和烃含量低,饱和烃与芳烃比值小的特征;微观上烷烃色谱及生物标志物表明稠油为两期混合油,成熟度属低-较成熟油的信息。通过同位素技术恢复了达6井稠油密度后,以生物标志物及物性特征将该凹陷稠油划分为三级降解油,为了解该区含油气远景和地质勘探部署提供了可靠依据。

s Characteristics of biodegradation of phenol by Pseudomonas sp. phen8 were examined with respect to substrate utilization, influence of glucose. Four mutants deleting the function of phenol-degrading were screened. The study shows that glucose added to the medium promotes cell growth and decreases the degradation of phenol. Additionally, cell growth and the degradation are enhanced by elevated phenol concentration within 0~7mmol/L and inhibited by that above 7mmol/L. Because the mutants deleting the...

s Characteristics of biodegradation of phenol by Pseudomonas sp. phen8 were examined with respect to substrate utilization, influence of glucose. Four mutants deleting the function of phenol-degrading were screened. The study shows that glucose added to the medium promotes cell growth and decreases the degradation of phenol. Additionally, cell growth and the degradation are enhanced by elevated phenol concentration within 0~7mmol/L and inhibited by that above 7mmol/L. Because the mutants deleting the capability of phenol-degrading were selected by Tn5 insertion into the chromosome in Pseudomonas sp. phen8, the basic work was conducted for the future study on gene location, clone and regulation of gene expression.

对分离筛选到的一株高效苯酚降解菌 phen8(假单胞菌Pseudomonassp .)的底物降解特性进行了分析 ,并筛选出四株缺失苯酚降解功能的突变株。结果表明 ,在苯酚初浓度为 0~ 7mmol/L时 ,苯酚降解菌 phen8的菌体密度和降解率与培养基中的苯酚初浓度成正比 ,而大于 7mmol/L的苯酚则明显地抑制降解反应。葡萄糖对苯酚的降解也表现出明显的抑制作用。与对照相比 ,在含有葡萄糖的基本培养基中培养 2 0h后 ,菌体对苯酚的降解率减小 4 7.2 %。已筛选到的四个丢失苯酚降解功能的突变株 ,为今后降解基因的克隆和基因表达调控研究提供了良好的工作基础。

 
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