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     Synthesis of Organic Donor Twin-ET and [2,2]-ET-Phane
     有机电子给体Twin—ET和[2,2]-ET—Phane的合成
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     THE LINEAR OLIGOMERIZATION OF ETHYLENE (Ⅱ) THE CATALYSIS OF ZrCl_4-Et_2AlCl BINARY SYSTEM
     乙烯线性齐聚的研究——Ⅱ.ZrCl_4—Et_2AlCl二组分体系的催化作用
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     Melt Growth on 4′-nitrobenzylidene-3- ethylcarbonylamino-4-methoxyaniline (MNBA -Et ) Crystals
     熔体生长4′-硝基亚苄基-3-丙酰胺基-4-甲氧基苯服(MNBA—Et)晶体
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     Objective To measure the concentrations of vascular endothelial growth factor (VEGF) , transforming growth factor β(TGF -β)and interleukin 6 ( IL - 6 ) in individual ovarian follicle fluid (FF) on the day of oocyte' s retrieval, and to examine their relationships with the development quality of the corresponding embryos.
     目的测定体外受精-胚胎移植(IVF—ET)周期中取卵日人卵泡液中血管内皮生长因子(VEGF)、转化生长因子β(TGF-β)、白细胞介素6(IL-6)的水平,并探讨其与胚胎发育质量的关系。
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     In order to obtain the organic superconductor with the high Tc,we de- signed and synthesized the new organic donors Twin-ET and[2,2]-EF-Phane.
     为了得到具有高的临界转变温度的有机超导体,我们设计并合成了新的有机电子给体Twin—ET 和[2,2]-ET—Phane。
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     et G.
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On the basis of these solutions, two types of elliptic quantum groups have been introduced (Foda et al.
      
Points rationnels sur les espaces homogenes et leurs
      
Connexite et densite des representations irreductibles des groupes de surface dans le groupe general lineaire
      
Aliasing error bounds are derived for one- and two-channel sampling series analogous to the Whittaker-Kotel'nikov-Shannon series, and for the multi-band sampling series, and a "derivative" extension of it, due to Dodson, Beaty, et al.
      
We show that in this case any frame is a Riesz basis and our characterization of Riesz bases may be considered as a generalization of the theorems established by Coifman, et al.
      
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This is a continuation of a previous study (Li, L. Y, et al. 1951, Fukien Agr. Jour., 12(3, 4): 107-112) on the outdoor culture of straw mushroom in Fukien. The present work includes: (1) investi- gations on the analysis of fresh Fukien grown straw mushroom, (2) isolation and culture of Volvaria esculenta and our trials in using pure-culture spawns to grow mushroom, and (3) preliminary obser- vations made on the environmental requirements of Volvaria esculcnta The results are briefly summarized as follows:...

This is a continuation of a previous study (Li, L. Y, et al. 1951, Fukien Agr. Jour., 12(3, 4): 107-112) on the outdoor culture of straw mushroom in Fukien. The present work includes: (1) investi- gations on the analysis of fresh Fukien grown straw mushroom, (2) isolation and culture of Volvaria esculenta and our trials in using pure-culture spawns to grow mushroom, and (3) preliminary obser- vations made on the environmental requirements of Volvaria esculcnta The results are briefly summarized as follows: 1. Our analytical work shows that the straw mushroom con- tains 92. 39% water, 206. 275mg. of ascorbic acid in 100g. of fresh mushroom, 2. 6024% sugar, 2. 6603% protein, 2. 2406% oil, and 0. 9118% ash. 2. Pure cultures of Volvaria esculenta could be readily obtained by innoculation with spores from fresh unopened mushroom. Cultures grow well on potato, corn, rice and rice-kernel husk media. 3. By employing pure-culture spawns, it takes only ten days for the first appearance of mushroom after spawnning while it takes three weeks usually if mixed cultures are used instead. The total period of mushroom production is likewise prolonged by the use of pure-culture spawns. 4. Preliminary observations indicate an atmospheric tempera- ture of 70°to 80°F., and a humidity of above 80% are favorable for the growth of straw mushroom. Production of mushroom stops when the atmospheric temperature falls below 70°F. The period of outdoor culture in Fcochow is from the latter part of April till the end of October.

本文旨在介绍草菰的营养价值,纯种培植的方法,及草菰生长状况。经分析结果,草菰的营养价值较一般蔬菜为高,尤以丙种维生素更为丰富。用纯种培植草菰较普通方法培植的不仅可以提早一半时间出菰,且产菰日期延长,菰之产量亦提高一倍。草菰生长速度从菰纽露面至菰伞平张需经过四十八小时,采为食用,以在菰疱破裂后十小时左右采收为佳。

(1) Sodium salt of reduced codehydrogenase I has been obtained in good yield as a dry powder from codehydrogenase I by reduction with alcohol and alcohol dehydrogenase. This preparation was stable for at least 5 months when kept dry at -15℃. (2) The properties of the particle-bound codehydrogenase I cytochrome reductase system in heart muscle preparation were found to differ considerably from those of the soluble enzyme as obtained by Mahler et al. Among other things, the affinity for cytochrome c of the...

(1) Sodium salt of reduced codehydrogenase I has been obtained in good yield as a dry powder from codehydrogenase I by reduction with alcohol and alcohol dehydrogenase. This preparation was stable for at least 5 months when kept dry at -15℃. (2) The properties of the particle-bound codehydrogenase I cytochrome reductase system in heart muscle preparation were found to differ considerably from those of the soluble enzyme as obtained by Mahler et al. Among other things, the affinity for cytochrome c of the particle-bound enzyme is much greater than the soluble enzyme. The Michaelis constant for cytochrome c of the former is only one twelfth of that of the latter.(Fig. 2A). (3) With either oxygen or excess cytochrome c as electron acceptor, it was found that the overall activity, in terms of rate of oxygen consumption or cytochrome c reduction, when both succinate and reduced codehydrogenase I were oxidized simultanously, did not represent the sum of the rates of oxidation when these two substrates were separately oxidized but equalled only the faster of the two separate oxidation rates(Fig. 5, Tables 1, 2). If 2,6-dichlorophenol indophenol was used as the electron acceptor, the overall rate of simultaneous oxidation of these two substrates was found to equal exactly the sum of the rates of separate oxidation(Table 3). (4) When either oxygen or excess cytochrome c was used as the electron acceptor, reduced codehydrogenase I and succinate each inhibited the rate of oxidation of the other(Figs 4, 6 & 7). Evidence has been presented to show that the inhibition of succinate oxidation by reduced codehydrogenase I is not due to the accumulation of oxaloacetate. (5) When malonate was also added to the reaction mixture, succinate no longer produced any inhibition of the oxidation of reduced codehydrogenase I(Fig. 8). (6) It is therefore concluded that in heart muscle preparation both succinate and reduced codehydrogenase I are oxidized by cytochrome c through a common, velocity limiting factor. This is in accordance with the view previously reached by some workers from studies on the action of certain inhibitors. However, it should be noted that in our experiments no agents which might produce any conceivable change in the colloidal structure of the enzyme system has been employed. (7) It should be emphasized that our results clearly show that great caution must be exercised in drawing conslusion on the role an enzyme might play in a complex enzyme system from studies of the properties of a solubilized enzyme. (8) It is believed that the competition of two enzyme systems for a common linking factor as demonstrated in this report has provided a new method for studies on the mutual relations of two or more enzyme systems.

(一)本報告提供了一個從輔酶Ⅰ,用酶還原法製備還原輔酶Ⅰ的方法。我們所製得的還原輔酶Ⅰ鈉鹽乾粉,可以在低温保存數月而不被氧化。 (二)與心肌製劑中顆粒相結合的輔酶Ⅰ細胞色素還原酶系,和用乙醇抽出的水溶性的輔酶Ⅰ細胞色素還原酶的性質頗不相同。其中比較重要的不同點是對於細胞色素c的親力,前者遠大於後者,其米氏常數僅約為後者的十二分之一。 (三)用一心肌顆粒製劑作為材料,無論用氧或過量之細胞色素c作為氫受體,還原輔酶Ⅰ與琥珀酸同時氧化時的總速度,不等於二者分別氧化時速度之和,而僅等於其中氧化較快者單獨氧化時之速度。但如用[2,6]二氯靛酚作為氫受體時,二者共同氧化時之總速度完全等於二者分別氧化時速度的和。 (四)當用氧或過量之細胞色素c作為氫受體時,琥珀酸與還原輔酶Ⅰ能彼此互相抑制對方氧化的速度。有足夠的實驗材料說明,還原輔酶Ⅰ對於琥珀酸氧化的抑制,不是由於草醯乙酸聚集的緣故。 (五)如果在反應混合物中同時含有琥珀酸脫氫酶的專一抑制劑,丙二酸,則琥珀酸對於還原輔酶Ⅰ氧化作用的抑制即被解除。 (六)根據以上的實驗結果,可以認為,還原輔酶Ⅰ及琥珀酸先通過一個共同的因子與細胞色素c作用。這個共同的因子在一般情形之下,也是...

(一)本報告提供了一個從輔酶Ⅰ,用酶還原法製備還原輔酶Ⅰ的方法。我們所製得的還原輔酶Ⅰ鈉鹽乾粉,可以在低温保存數月而不被氧化。 (二)與心肌製劑中顆粒相結合的輔酶Ⅰ細胞色素還原酶系,和用乙醇抽出的水溶性的輔酶Ⅰ細胞色素還原酶的性質頗不相同。其中比較重要的不同點是對於細胞色素c的親力,前者遠大於後者,其米氏常數僅約為後者的十二分之一。 (三)用一心肌顆粒製劑作為材料,無論用氧或過量之細胞色素c作為氫受體,還原輔酶Ⅰ與琥珀酸同時氧化時的總速度,不等於二者分別氧化時速度之和,而僅等於其中氧化較快者單獨氧化時之速度。但如用[2,6]二氯靛酚作為氫受體時,二者共同氧化時之總速度完全等於二者分別氧化時速度的和。 (四)當用氧或過量之細胞色素c作為氫受體時,琥珀酸與還原輔酶Ⅰ能彼此互相抑制對方氧化的速度。有足夠的實驗材料說明,還原輔酶Ⅰ對於琥珀酸氧化的抑制,不是由於草醯乙酸聚集的緣故。 (五)如果在反應混合物中同時含有琥珀酸脫氫酶的專一抑制劑,丙二酸,則琥珀酸對於還原輔酶Ⅰ氧化作用的抑制即被解除。 (六)根據以上的實驗結果,可以認為,還原輔酶Ⅰ及琥珀酸先通過一個共同的因子與細胞色素c作用。這個共同的因子在一般情形之下,也是這兩個酶系統的速度限制因子。應該指出在我們的實驗中,並未使用任何可能影響酶系統結構的條件,因此我們的結果是在一個比較接近於生理狀態的情形之下獲得的。 (七)應該着重指出,從本報告的結果可以看到,一個用人為的方法從複雜酶系上溶解下來的酶的性質,有時並不能代表這個酶在有組織的酶系統中的真實情况。 (八)我們相信,本報告所說明的兩酶系競爭一個共同因子的一些現象,將为研究複雜酶系之間的相互關係,提供一個新的方法。

In continuing our work on sulfabenzothiazoles containing salt-forming groups, 2-sulfanilylamino-benzothiazole 6- and 5-(or 7-)carboxylic acids were obtained. Their sodium salts are very soluble in water and give neutral solutions. Through the same route,it failed to synthesize the corresponding 4-carboxylic acid,starting either from anthranilic acid or its ethyl ester.They did not give o-thioureidobenzoic acid or its ester,but cyclized to benzoylene thiourea(2- sulfhydryl 4-hydroxyl quinazoline).The same compound...

In continuing our work on sulfabenzothiazoles containing salt-forming groups, 2-sulfanilylamino-benzothiazole 6- and 5-(or 7-)carboxylic acids were obtained. Their sodium salts are very soluble in water and give neutral solutions. Through the same route,it failed to synthesize the corresponding 4-carboxylic acid,starting either from anthranilic acid or its ethyl ester.They did not give o-thioureidobenzoic acid or its ester,but cyclized to benzoylene thiourea(2- sulfhydryl 4-hydroxyl quinazoline).The same compound was obtained from the hydrolysis of α-o-carboxyphenyl β-benzoyl thiourea and from the ammoniolysis of o-isothiocyanobenzoic acid. Attempt to cyclize α-o-carboxyphenyl β-benzoyl thiourea by bromine to 2- benzamido-benzothiazole 4-carboxylic acid also failed,and the desulfured cyclized compound was identified to be 2-benzoyl benzoylene urea. We have,at the same time,cleared up the diversed results of H.Rupe and G.M.Dyson et al.and identified the structure of the Douglass and Dains' compound.

1.自对位和间位氨基苯甲酸综合了相应的具有羧基的磺胺苯并噻唑。它们的钠盐在水中溶解度极大,溶液呈中性。2.白间-硫脲基苯甲酸导出的苯并噻唑,其环化并合地位没有确定。3.自邻-氨基苯甲酸或它的乙酯依同样途径综合,得不到相应的苯并噻唑,产物是苯并嘧啶类型化合物。

 
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