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radiochemical purity
相关语句
  放化纯度
    Measuring of Radiochemical Purity of Myocardial Imaging Agent ~(99)Tc~mN(NOEt)_2
    心肌显像剂~(99)Tc~mN(NOEt)_2放化纯度的分析
短句来源
    The Analytical of Radiochemical Purity of Tumor Receptor Imaging Agent ~(99)Tc~m-octreotide
    肿瘤受体显像剂~(99)Tc~m-octreotide的放化纯度分析
短句来源
    Methyl orange was employed for the quantitative determination of [~3H] F-7302. The specific radioactivity was 59 ci/mM, and the radiochemical purity was 98%. [~3H] F-7302 binding experiments with opiate receptors of mouse brain showed a high affinity and specificity.
    反应产物经硅胶纸层析纯化后,用甲基橙比色法定量测定,得到N-{1-[β-羟基-β-氚-β-(对-氚苯基)乙基]-3-甲基-4-哌啶基}-N-丙酰苯胺(Ⅳ,[~3H]F-7302),其比放射性为59 Ci/mM,放化纯度为98%。
短句来源
    Specific activity of the product is 15.54 GBq/mmol, radiochemical purity 95.7%.
    放射性比度为15.54GBq/mmol,放化纯度为95.7%.
短句来源
    P-7521 is a potent synthetic analgesic. [3H]P-7521 was prepared by reaction of brom substituted P-7521 with tritium. The radiochemical purity is over 95%.
    P—7521盐酸盐经溴化后,进行催化卤氚置换反应,得到>95%放化纯度的[~3H]P—7521。
短句来源
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  “radiochemical purity”译为未确定词的双语例句
    〔~3H-4,4′-diphenyl-〕 hydroxy acetic acid-3-quinuclidinyl ester was synthesized by tritium-bromine exchange with tritiated gas in the presence of 10% pd-c catalyst. The specific activity was 851 GBq/mmol and the 3H-QNB radiochemical purity was above 98%.
    本文报道了由4,4′-二溴二苯羟乙酸-3-奎宁环酯在10%钯-炭催化卤氚交换法制备了[~3H-4,4′-]二苯羟乙酸-3-奎宁环酯,它的放射性比度851GBq/mmol,放射性化学纯度大于98%。
短句来源
    RESULTS The corrected radiochemical yield of 18F-FDG was about 72%,the whole synthesis time was 50 min, and the radiochemical purity was above 95% by HPLC and TLC respectively. All quality criteria of 18F-FDG met the requirements of the pharmacopoeia of USA.
    结果 经时间衰减校正后 ,18F FDG放射化学产率约为 72 % ,总合成时间为 5 0min ,各项质量控制指标符合美国药典要求。
短句来源
    The results demonstrate that radiochemical purity of 99 Tc m-MPAQ is over 96% with a high stability in aqueous solution and a higher lipophilicity than that of 99 Tc m-MPBDA.
    实验结果表明,99Tcm MPAQ放化纯在96%以上,室温下在水溶液中稳定6h以上,脂溶性比99Tcm MPBDA的大。
短句来源
    Results The UV and HPLC spectrum of the synthesized 3 H higenamine were identical with that of the higenamine standard, the radiochemical purity was more than 98% and the specific activity was 370 GBq/mmol.
    结果 合成的3H 去甲乌药碱UV和HPLC图谱鉴定与去甲乌药碱标准品一致 ,放化纯 >98% ,比活度 >370GBq mmol。
短句来源
    The corrected radiochemical yield of 11C-CH from 11CO2 was more than 85% with the total synthesis time about 20 min and the radiochemical purity above 99%.
    ; 11CO2转化为11C-CH总时间约20min;
短句来源
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  radiochemical purity
The optimal amounts of DMAE (25 μl in 50 μl of ethanol) and tC18 (0.1 g) were found, providing a high radiochemical yield of the labeled choline (85%, corrected for radioactive decay) and radiochemical purity of more than 99.5%.
      
With 166Ho-albumin microspheres as example, an algorithm was developed for evaluation of the radiochemical purity of the preparation.
      
It was found that the radiochemical purity of the preparation, which is primarily determined by impurities of rare-earth elements, can be estimated from the content of 152mEu.
      
A simple "dry" procedure was developed for isolation of 186Re with a yield no less than 85% and radiochemical purity no worse than 99.99%.
      
The radiochemical purity of a 131I preparation (the iodide fraction) was determined by ascending paper chromatography using a mixture of sodium iodide, sodium iodate, and sodium carbonate as a carrier and aqueous methanol as an eluent.
      
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Cholesterol has been labeled with radioiodine by two methods: ( 1 ) mercura-tion of cholesterol and subsequent replacement of the chloromercuri group with 131I2;( 2) exchange of 6-iodo-cholesterol with radioactive iodide in aqueous butanolsolution. The radiochemical purity of the final product was demonstrated by paperchromatography and autoradiography.It was found that iodine was firmly bound in the iodinated cholesterol molecule. No appreciable loss of the label was observed and the original compound...

Cholesterol has been labeled with radioiodine by two methods: ( 1 ) mercura-tion of cholesterol and subsequent replacement of the chloromercuri group with 131I2;( 2) exchange of 6-iodo-cholesterol with radioactive iodide in aqueous butanolsolution. The radiochemical purity of the final product was demonstrated by paperchromatography and autoradiography.It was found that iodine was firmly bound in the iodinated cholesterol molecule. No appreciable loss of the label was observed and the original compound was recovered unchanged after refluxing for 3 hours the radioiodinated cholesterol in butanol solution containing either concentrated sodium ethoxide or hydrogen chloride.The labeled cholesterol resembles cholesterol itself in many respects. It crystallizes in pearly leaflets. It is precipitated by digitonin and gives intense red color with Zak's reagent. Its infrared absorption spectrum practically coincides with that of cholesterol in all of the main absorption bands.Above all, "the most interesting property of the radioiodinated cholesterol lies in its behavior in animal experiments. After being given intravenously to rabbits or rats together with unlabeled cholesterol, the labeled cholesterol appeared in plasma, liver and atherosclerotic plaques of the animal in such a manner that the changes in concentration of the two administered compounds closely paralleled to ,each other.Since the radioative isotope 131I is a cheap γ-emitter with relatively short half-life and its amount within the body can be easily measured from outside, this radioiodinated cholesterol might be useful as a diagnostic aid in clinical conditions involving cholesterol disturbance. As a matter of fact, it has already been used successfully in several Chinese hospitals as an imaging agent for adrenal visualization.

本文是试制一种适合于临床应用的胆固醇示踪物。研制成的I-6-碘代胆固醇在结晶形状,成色反应、沉淀反应及红外线吸收光谱等方面都和胆固醇很相似,且有很高的化学与生物稳定性。此标记物与胆固醇,同时给予家兔或大鼠后,在动物肝、血浆及血管壁动脉粥样硬化斑块中浓度的变化彼此平行。目前它巳用于临床,作为肾上腺显影剂。

A new potent narcotic analgesic, N-[1-(β-hydroxy β-phenylethyl)-3-methyl-4-piperidyl]-N-phenylpropionamide (simply named as F-7302) was labelled by tritiumhalogen exchange and catalytic reduction of N-[1-(p-bromo-benzoyl methyl)-3-methyl-4-piperidyl]-N-phenylpropionamide with tritium gas, using PdO/BaSO_4 as catalyst, removal of labile tritium by treating with alcohol, and final purification with silica-gel paper chromatography. Methyl orange was employed for the quantitative determination of [~3H] F-7302. The...

A new potent narcotic analgesic, N-[1-(β-hydroxy β-phenylethyl)-3-methyl-4-piperidyl]-N-phenylpropionamide (simply named as F-7302) was labelled by tritiumhalogen exchange and catalytic reduction of N-[1-(p-bromo-benzoyl methyl)-3-methyl-4-piperidyl]-N-phenylpropionamide with tritium gas, using PdO/BaSO_4 as catalyst, removal of labile tritium by treating with alcohol, and final purification with silica-gel paper chromatography. Methyl orange was employed for the quantitative determination of [~3H] F-7302. The specific radioactivity was 59 ci/mM, and the radiochemical purity was 98%.[~3H] F-7302 binding experiments with opiate receptors of mouse brain showed a high affinity and specificity. The saturation concentration for the stereospecific binding of [~3H]F-7302 was 4.5×10~(-9)M. and the dissociation constant was 1.25×10~(-9)M.The retio of specific/nonspecific binding was 10~15.

本文报道以N-[1-(对-溴苯甲酰甲基)-3-甲基-4-哌啶基]-N-丙酰苯胺(Ⅲ)为前体,以PdO/BaSO_4作催化剂,用氚气进行卤—氚置换,氚化还原羰基的反应。反应产物经硅胶纸层析纯化后,用甲基橙比色法定量测定,得到N-{1-[β-羟基-β-氚-β-(对-氚苯基)乙基]-3-甲基-4-哌啶基}-N-丙酰苯胺(Ⅳ,[~3H]F-7302),其比放射性为59 Ci/mM,放化纯度为98%。[~3H]F-7302与小鼠脑内阿片受体的特异性结合在浓度为4.5×10~(-9)M时达到饱和,解离常数Kd=1.25×10~(-9)M,最大结合量B_(max)=93.08×10~(12)M/g蛋白,其特异性结合与非特异性结合比值达10~15。

Mebrofenin was synthesized by nitration of mesitylene, followed by reduction, bromination and acylation with nitrilotriacetic acid. The 99mTc-complex of this compound was prepared by stannous chloride reduction of sodium pertechnetate in aqueous solution of the appropriate compound. 99mTc-Mebrofenin possesed high hepatic specificity and rapid hepatocellular transit; it was also resistant to competition for hepatobiliary excretion from bilirubin and rapid radiolabeling with high radiochemical purity and...

Mebrofenin was synthesized by nitration of mesitylene, followed by reduction, bromination and acylation with nitrilotriacetic acid. The 99mTc-complex of this compound was prepared by stannous chloride reduction of sodium pertechnetate in aqueous solution of the appropriate compound. 99mTc-Mebrofenin possesed high hepatic specificity and rapid hepatocellular transit; it was also resistant to competition for hepatobiliary excretion from bilirubin and rapid radiolabeling with high radiochemical purity and stability. 18 cases of patients were studied by this agent, all obtained excellent results.

~(99m)锝-甲溴苯宁(Mebrofenin)被认为是当前最优良的一种肝胆显像剂,作者参考有关文献后,进行试制获得成功,经初步动物实验,证实该显像剂能使肝胆清楚显像,值得今后在临床上试用。

 
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