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interfering
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  干扰
     A Study on Anti-wt-HBV Dominant Negative Mutants Constructed by Interfering Mutation in Replication
     利用复制干扰突变构建具有抗HBV作用的显性阴性突变体研究
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     Studies on Hepatitis G Virus as a Replicable Vector for Gene Therapy and Inhibition of Gene Expression and Viral Replication by Small Interfering RNA
     庚型肝炎病毒作为复制型基因治疗载体及小干扰RNA对病毒表达复制抑制作用的研究
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     Experimental Study of Interfering RNA Targeting H-ras Gene Combined with Energy Controllable Steep Pulses Treating Ovarian Carcinoma
     靶向H-ras基因的小干扰性RNA联合能量可控陡脉冲治疗卵巢癌的实验研究
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     Inhibition of Proliferation of Classical Swine Fever Virus by Small Interfering RNAs
     干扰RNA抑制猪瘟病毒增殖效果研究
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     Studies on siRNA Interfering TMV Infection and Its Molecular Mechanism
     siRNA干扰TMV侵染及其分子机理的研究
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  干预
     The Study of NF-κB and Th_1/Th_2 Cytokines in the Asthma Mice Model and the Interfering Effect of Thymosine and Dexamethasone
     NF-κB和Th_1/Th_2 CK在哮喘小鼠模型中的表达和T-α、Dex干预作用的研究
短句来源
     The newborn tetanus outbreak rates of mobile population drop from 0.68‰ to 0.33‰(P<0.01)after intensifying interfering.
     加强综合干预后,流动人口新生儿破伤风发病率从0.68‰下降至0.33‰(P<0.01)。
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     RT-PCR was used to observe the effects of LPS on mRNA expression of GRK2,GRK3,β-arrestin1,β-arresti2 in rat PMVEC and the interfering action of anisodamine.
     用RT-PCR法观察了LPS作用后大鼠PMVEC中GRK2、GRK3、β-arrestin1和β-arresti2在mRNA水平表达的改变和山莨菪碱的干预作用;
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     PAI-1,TIMP-1 gene expression in renal tubulointerstitial fibrosis of ureteral obstruction and the interfering effects of HGF treatment
     PAI-1和TIMP-1基因在肾小管间质纤维化中的表达及HGF的干预作用
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     Objective: To investigate the distribution, expression and variation of MMP-2、9 and TIMP-1 in remnant renal tissues of 5/6 Nephrectomy young rats,and to evaluate the interfering effects of angiotensin converting enzyme inhibitor (ACEI) combined with angiotensin receptor agonist (ARB).
     目的:研究基质金属蛋白酶-2、9(MMP-2、9)/金属蛋白酶组织抑制物-1(TIMP-1)在5/6肾切除残肾慢性肾衰幼年大鼠的分布、表达及变化,观察联合应用血管紧张素转换酶抑制剂(ACEI)和血管紧张素II受体拮抗剂(ARB)对病变干预的影响,为儿童慢性肾功能衰竭的发病机制及临床治疗寻求新的线索和依据。
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  “interfering”译为未确定词的双语例句
     Specific Inhibition of Expression of Lung Resistance-Related Protein Gene in K562 Cells by Short Interfering RNA
     短干涉RNA特异性抑制K562细胞肺耐药相关蛋白基因表达的研究
短句来源
     Methodological Study of the Delivery Systems of Small Interfering RNA
     小干涉RNA递送方法的研究
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     Inhibition of Hepatitis B Virus Gene Expression and Replication by Vector-based Small Interfering RNAs in HepG2 2.2.15 Cells and Transgenic Mice
     siRNA对HepG2 2.2.15细胞和转基因小鼠中HBV的基因表达及复制的抑制作用研究
短句来源
     The Effect of Proliferation, Apoptosis and Cell Cycle Onset in Human Cervical Cancer Cells Line Induced by HPV16 E6 Small Interfering RNA
     HPV16 E6 siRNA对宫颈癌细胞增殖、凋亡和细胞周期的影响
短句来源
     Inhibition of NSCLC Cell Proliferation and Tumor Growth by Vector Based-small Interfering RNA Targeting HER2/neu
     针对HER2/neu的siRNA对非小细胞肺癌生长的抑制作用
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  interfering
In RNAi technology, 19 bp double-stranded short interfering RNAs (siRNA) with characteristic 39 overhangs are usually used.
      
Eight different mouse myostatin small interfering RNA (siRNAs) were synthesized and tested.
      
Inhibition of West Nile virus replication by short interfering RNAs
      
Discrimination of the spectral structure of sound signals under the conditions of dichotic release from interfering noise
      
It is established that the interfering flows generated by the frame and the propelling system conserve their individuality far downstream of the body.
      
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Vanillalrhodanine was found to be an excellent reagent for silver ions. Its 0.2 percent solution in acetone gives a brownish violet precipitate with silver ions in ammoniacal solution. Limit of identification: 0.01γ. Concen- tration limit: 1∶5,000,000. Merecric and merourous ions give same reactions, but they can be removed by the addition of aqueous ammonia and the test is to be carried out in the filtrate. Ferric ions, when present in high concentra- tions, interfere the observation of silver.

3甲氧基4羥基亞苄羅丹寧可以用作銀離子的斑點試劑。其千分之二丙酮溶液與銀離子在含氨溶液中生成棕紫色沈澱。鑑定限度為0.01_γ,濃度界限爲1∶5,000,000。普通離子除汞外皆不干擾。鐵鹽在濃度高時,才妨碍銀的鑑定。

In view of the necessity of a rapid and accurate process for the deter-mination of fluorine applicable in the analysis of sodium fluoride and otherfluorine compounds,the author has established a new volumetric processconsisting in the titration in aqueous-alcoholic medium with ferric nitrate asstandard solution and sodium salicylate as indicator.All of the methods,published by Guyot,Greeff,Fairchild andVisintin proposed for the determination of fluorine using ferric solutionas standard,are based on the reaction:6NaF+FeCl_3→Na_3FeF_6+3NaCl....

In view of the necessity of a rapid and accurate process for the deter-mination of fluorine applicable in the analysis of sodium fluoride and otherfluorine compounds,the author has established a new volumetric processconsisting in the titration in aqueous-alcoholic medium with ferric nitrate asstandard solution and sodium salicylate as indicator.All of the methods,published by Guyot,Greeff,Fairchild andVisintin proposed for the determination of fluorine using ferric solutionas standard,are based on the reaction:6NaF+FeCl_3→Na_3FeF_6+3NaCl. But the sodium ferric fluoride thus formed is fairly soluble in water and makesthe end-point unclear,therefore the titration can not be performed accurately.This seems to be due to the fact that the following two reactions advancesimultaneously,and accordingly the formation of sodium ferric fluoride is in-complete in aque(?)us medium:3NaF+Fe(NO_3)_3→FeF_3+3N_aNO_33NaF+FeF_3→Na_3FeF_6Nevertheless,these reactions,according to the author's experiments;proceedalmost quantitatively in meda.containing at least 50% by volume of alcohol.This paper reports the xperimental results obtained in the fundamentalstudies on the various factors influencing the accuracy of the volumetry,namely,the sensitivity and the necessary amount of sodium salicylate used asindicator,the pH value,the alcoholic concentration of the titration medium,the concentration of the fluoride taken for the determination and the timewhen alcohol should be added in the course of titration.Furthermore,a rapidvolumetric process with high accuracy is proposed together with its applicationsin ordinary analyses of sodium fluoride and other fluorine compounds.The proposed method is characteristic in using sodium salicylate asindicator,which shows sharp violet color with minute amount of ferric ion inmedium of pH 3 controlled with buffer solution,then titrating with standardferric nitrate,and adding proper amount of alcohol(the alcoholic concentra-tion at the end-point should be above 50%)during the titration,when themedium becomes orange yellow in color.The method may be summarized as follows:Take 5 ml of neutral sodiumfluoride solution of about 0.3 N in a small Erlenmeyer flask,add 2.5 mlof Walpole's buffer solution of pH 3(formed by dissolving 34.0 g ofcrystalline sodium acetate and 20 ml of 38% HCl in water,and making upto 250 ml)and 1 ml of 0.1 M sodium salicylate dissolved in 50% alcohol.After sufficient stirring,titrate with standard 0.3 N(0.05 M)ferric nitratesolution,using micro-burette until the medium becomes orange yellow,thisstep being reached after addition of about 4 ml of titrant.Then decolorizethe solution by adding 12.5 ml of absolute alcohol(or 13 ml of 95% alcohol),previously purified by redistillation with lime;stirring is necessary during theaddition.Further continue the titration until the light pink color formeddoes not fade after stirring for 30 seconds when observed over a white surface. In the analyses of sodium fluoride and other fluorine compounds con-taining interfering substances,such as divalent and polyvalent metallic ions,phosphate,silicate,borate,carbonate,sulfide ions and reductants acting on ferricion,it is necessary to separate fluorine from these interfering substances bythe distillation with sulfuric acid according to the method of Willard andWinter(20).Then the distillate is neutralized with dilute sodium hydroxideand adjusted to the proper pH with hydrochloric acid using p-nitrophenol asindicator.The solution is ready for titration as described.But in the caseof absence of these interfering substances except carbonate,for example,inthe determination of the concentration of sodium fluorde solution obtained bythe extraction of the crude product,produced industrially by fusing fluorsparwith sodium carbonate and silica,the above separation of fluorine by dis-tillation is dispensable.The anaIytical results obtained by the proposed method are in goodagreement with those obtained by the lead chlorofluoride process(8),whichis recognized as official method for the determination of fluorine in agriculturalproducts.

本文介绍一容量分析氟的新方法和在工业制品上的应用,并分析了一种工业制备的氟化钠液,所得的结果和氟氯化铅法所得的极为一致。对于影响该分析法准确度的各种因素:指示剂的灵敏度和滴定时适宜的用量、溶液的 pH 值、应加的乙醇量、操作中加乙醇的次序、以及氟离子的适宜浓度,均加以研究并找出适宜的情况。本法用硝酸铁为标准液,水杨酸钠作指示剂,在 pH=3左右作滴定;当溶液呈橙黄色时,加入适量的乙醇,使其浓度在终点时仍不低于50%。如有干扰物质如二价及多价金属离子、磷酸根、矽酸根、硼酸根、碳酸根、硫化物和还原物质可能与三价铁起作用者,均应分离之。

An electrophotometric method has been worked out for the determination of magnesium in cast iron using titan yellow as indicator.Briefly,the method consists of dissolving the sample in dilute sulphuric acid,separating iron and other metals such as copper and nickel by electrolysis with mercury cathode and precipitating manganese from ammoniacal solution with ammonium persulfate.Ammonimn salt,silica and traces of aluminaare thenremoved. Finally,the prepared titan yellow reagent is added to the solutionand the...

An electrophotometric method has been worked out for the determination of magnesium in cast iron using titan yellow as indicator.Briefly,the method consists of dissolving the sample in dilute sulphuric acid,separating iron and other metals such as copper and nickel by electrolysis with mercury cathode and precipitating manganese from ammoniacal solution with ammonium persulfate.Ammonimn salt,silica and traces of aluminaare thenremoved. Finally,the prepared titan yellow reagent is added to the solutionand the magnesium content determined from the electrophotometric reading.The time required for each determination is approximately 5 hours. The effect of interfering elements which are likely present in cast iron such as manganese, silicon,phosphorus, aluminum, copper, nickel and vanadium as well as ammonium ion and alkali and alkaline earth metals has been studied and discussed.It has been shown that manganese, silicon, aluminum,copper,nickel,iron and ammonium ions can be removed down to such low values as to cause no significant interference.Phosphorus under 0.4% has no appreciable effect.Vanadium is not separated in the present method,but fortunately it is usually present in insignificant amounts in ordinary cast iron.The effect of calcium is compensated by the introduction of saturated calcium sulphate solution before the titan yellow addition. Potassium and sodium have no appreciable effect when present in small amounts. The results obtained by the present method for the determination of magnesium in 11 known samples are good,the average difference being 0.002% in a range of 0.000% to 0.140% Mg.The data obtained by the present method are also in good agreement with those obtained by gravimetric methods On seven nodular iron samples made by the Metallurgical Division of our Institute.A detailed procedure for the determination of magnesium in cast iron has been suggested and included in this paper.In view of its rapidity and fair accuracy,the new photometric method might prove useful for the purpose of control in a nodular iron foundry.

本文报告将地丹黄比色法应用於测定铸铁中之镁的试验结果.如将铁、锰、铝、矽等干扰物质预先除去,则镁的测定并无困难.依照本文所擬的方法分析,所需时间约为五小时,较重量法迅速得多.

 
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