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电子转移
相关语句
  electron transfer
    PHOTO-INDUCED ELECTRON TRANSFER OF TPP-AQ
    TPP-AQ的光诱导电子转移
短句来源
    STUDY ON ELECTRON TRANSFER IN THE PEPTIDES
    肽链中电子转移的研究
短句来源
    THE CURRENT SITUATION AND DEVELOPING TREND OF PHOTOINDUCED ELECTRON TRANSFER REACTIONS IN PHOTOSYNTHETIC MODEL COMPOUNDS
    光合作用模型化合物中电子转移反应研究的现状及发展趋势
短句来源
    Theoretical Studies on the Mechanism of the Proton-transfer-coupled Electron Transfer Reactions Between Menaquinone Q_A and Ubiquinone Q_B in the Bacterial Photosynthetic Reaction Center of Rhodopseudomona viridis
    Rhodopseudomena viridis细菌光合作用反应中心质体醌Q_A 与泛醌Q_B 间电子转移耦合质子转移机理的理论研究(英文)
短句来源
    The Influence of Solution and Propoties of the Electrode Surface on Electron Transfer Properties of the Adrenaline
    溶液及电极表面性质对肾上腺素电子转移性能的影响
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  “电子转移”译为未确定词的双语例句
    Artificial ESR Study on Participation of Histidine in the SecondaryElectron Transfer Inside Photosystem Ⅱ Reaction Center
    光系统Ⅱ反应中心内组氨酸参与给体端次级电子转移反应的人工模拟ESR研究
短句来源
    This is contrary to the suggestion by Weiss that the Fe-O_2 bond is similar to Fe~(3+)O_2~-.
    这说明氧合血红蛋白的Fe-O_2键合态不发生电子转移
短句来源
    A NEW EVIDENCE FOR THE ONE-ELECTRON TRANSFER BETWEEN ORGANIC DISULFIDES AND A MODEL COENZYME OF NADH, N BENZYL-1, 4 DIHYDRONICOTINAMIDE
    辅酶模型化合物与过硫化物间单电子转移反应机制的新证据
短句来源
    Cholesterol oxidase and horseradish peroxide are immobilized by electropolymerization of polypyrrole. Ferrocyanide works as an eletroactive mediator. Cholesterol (concentration range from Omg/dl to 400mg/dl) is detected by an amperometric method.
    本论文描述的胆固醇生物传感器是以丝网印刷的碳糊电极为基底,通过电聚合方法在导电聚吡咯膜内固定胆固醇氧化酶和辣根过氧化物酶,以亚铁氰化钾为电子转移介质,以电流法检测胆固醇浓度(浓度范围从0mg/dl至400mg/dl)。
短句来源
    Hemoglobin (Hb) is an important respiratory protein in red cells, which can be used as the carrier of oxygen.
    血红蛋白(Hb)是脊椎动物红细胞内的呼吸蛋白,是血液中运输氧气的主要物质,研究其直、间接电化学行为对于研究生命体内的电子转移过程,了解生命过程的氧化还原机理及建立高灵敏的检测方法等方面具有非常实际的意义。
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  electron transfer
Photoinduced intramolecular electron transfer process from C60 moiety to carbazole moiety has been studied by nanosecond laser flash photolysis.
      
The electron transfer coefficient and apparent reaction rate constant were determined to be 0.861 and 1.27 s-1.
      
This causes a significant increase in the efficiency of further electron transfer to the primary quinone acceptor as compared to a system with two absolutely symmetric electron transfer branches.
      
Reactions of electron transfer from the primary to secondary quinone acceptors and from the multiheme cytochrome c subunit to photoactive bacteriochlorophyll dimer were used as probes of electron transport efficiency.
      
The thermoinduced transition of the acceptor complex to the conformational state facilitating electron transfer to the secondary quinone acceptor was studied.
      
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本文用量子化学方法研究蛋白质分子格合物的电子能谱及电子转移和氧化还原反应的关系。本文的结果表明:当蛋白质分子和辅酶或其它有机分子形成电荷迁移络合物时,在蛋白质分子导带下面将出现一系列定域化的电子-空穴束缚态能级。络合物受激发时,首先由基态跃迁到束缚态最低能级,出现电荷迁移吸收光谱。再激发时,才能由束缚态最低能级跃迁到其它束缚态能级或导带,从而出现非定域化的电子和产生电子顺磁共振信号。极性介质的影响和化学反应有助于电子转移。而络合物中的电子转移又会导致电子施主分子被氧化,电子受主分子被还原。通过对辅酶等分子的电离能和电子亲合势的计算,说明辅酶和蛋白质分子可能以电荷迁移络合物的形式存在。一些半定量的计算和定性的结论能初步解释氧化还原酶在光激发和酶促反应中所产生的电荷迁移吸收光谱及电子顺磁其振信号的实验事实。

The electronic absorption and fluorescence emission spectra of covalently linked porphyrin-anthraquinone com pounds, i.e, 5-[P-(α-anthraquinonyl amide) methoxyphenyl]-10,15,20-tri-(P-methoxyphenyl) porphyrin P-AQ (α) and 5-[P-(βanthraquinonylamide) methoxyphenyl]-10,15,20-tri(P-methoxydhe-nyl)porphyrin P-AQ(β)in benzene and dimethylformamide have been examined. The results obtained indicate that the combination of the porphyrin and the anthraquinone via covalent chain creates a more favorable circumstance for...

The electronic absorption and fluorescence emission spectra of covalently linked porphyrin-anthraquinone com pounds, i.e, 5-[P-(α-anthraquinonyl amide) methoxyphenyl]-10,15,20-tri-(P-methoxyphenyl) porphyrin P-AQ (α) and 5-[P-(βanthraquinonylamide) methoxyphenyl]-10,15,20-tri(P-methoxydhe-nyl)porphyrin P-AQ(β)in benzene and dimethylformamide have been examined. The results obtained indicate that the combination of the porphyrin and the anthraquinone via covalent chain creates a more favorable circumstance for their interaction, of most interest,however,in this case is the fact that there appears a significant difference in fluorescence quenching for P-AQ(α)as compared with P-AQ(β).Based on this finding it has been suggested that the interaction of the subunit in the covalent chain with the anthraquinone linked by it seems to be capable of affecting the intramolecular electron transfer in the P-AQ compounds and this effect has to be taken into account in designing of model system for imitation of the primary photochemical events in photosynthesis

考察了卟啉—蒽醌化合物5-[对-(α-蒽酰亚胺)甲氧苯基]—10,15,20—三[对—甲氧苯基)卟啉P—AQ(α)和5—[对—(β—蒽醌酰亚胺)甲氧苯基]—10.15.20—三(对—甲氧苯基)卟啉P-AQ(β)在苯和二甲基甲酰胺中的电子吸收光谱和荧光发射光谱.所得结果表明:当用共价键分子链将卟啉和蒽醌连接在一起时,为它们之间的相互作用创造了更为有利的条件,但更有趣的实验发现是:P—AQ(α)和P—AQ(β)在极性溶液中的荧光猝灭特性有明显的不同.根据这一发现可以设想;连接卟啉和蒽醌基团的共价键分子链的亚单位和被它所连接的醌基的相互作用,可对卟啉和蒽醌之间的分子内电子转移过程产生一定的影响,因而设计光学作用过程中光化学过程的模型体系时,对此必须给予应有的考虑.

Factors affecting the electron transfer from porphyrin to acceptors have been examined in this paper by fluorescence quenching measurement on covalently linked porphyrin-nitrobenzene compound with different substitution pattern in two solvents.Beside the expected effect of acceptor's redox potential, the resvlts obtained in this paper reveal a strongly dependence of relative orientation of nitrobenzene moiety with respect to the porphyrin ring on the electron transfer between them.This effect could be confirmed...

Factors affecting the electron transfer from porphyrin to acceptors have been examined in this paper by fluorescence quenching measurement on covalently linked porphyrin-nitrobenzene compound with different substitution pattern in two solvents.Beside the expected effect of acceptor's redox potential, the resvlts obtained in this paper reveal a strongly dependence of relative orientation of nitrobenzene moiety with respect to the porphyrin ring on the electron transfer between them.This effect could be confirmed also by IR and NMR spectra of these porporphyrin-nitrobenzene compounds.This finding seems to be an indirect experimental evidence supporting our hypothesis proposed for understanding the directionality of electron transfer within reaction center of photosynthesis.

本文通过测量几种共价链相连接的卟啉—硝基苯化合物在二种溶剂中荧光猝灭,考察了影响卟啉和电子受体间进行电子转移的影响因素,所得结果除示明可予期的受体分子的氧化还原电位的影响外,并发现硝基苯基团和卟啉环之间的电子转移与它们的相对空间取向有明显的依赖关系.这一效应也可从这些卟啉—硝基化合物的红外及核磁共振谱图中得到证实.这一发现可视作为对我们所提出的解释光合作用反应中心的电子转移方向性的设想提供一个间接实验支持.

 
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