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radiochemical purity
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  放化纯度
     Results Radiochemical purity of 99 Tc mN(NOEt)_2 was (98.41±0.46)%,blood clearance T (α)_ 1/2 =(2.8±0.1) min, T (β)_ 1/2 =(142.7±32.7) min,Cl=(292.3±117.1) mL/h.
     结果 99TcmN(NOEt) 2 的放化纯度平均为 (98 41± 0 46 ) % ,血清除T(α) 1 2 =(2 8± 0 1)min ,T(β) 1 2 =(142 7± 32 7)min ,总清除速率Cl=(2 92 3± 117 1)mL h。
短句来源
     Analysis of the Radiochemical Purity of ~(18)F-FDG by HPLC
     HPLC法分析~(18)F-FDG放化纯度
短句来源
     The radiochemical purity of ~(113)In~m-DTPA-c-myc is more than 94.0% for 48 h in saline,and(76.1%) for 48 h in serum.
     13Inm-DTPA-c-myc反义核酸在生理盐水中48 h放化纯度>94.0%,在血清中48 h放化纯度仅为76.1%。
短句来源
     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
     Results The labeling rate of ~(125)I-K5 and ~(131)I-K5 was 86% and 84%, and the radiochemical purity was 96% and 95% respectively.
     结果~(125)I-rhK5和~(131)I-rhK5的标记率为86%和84%,放化纯度为96%和95%。 竞争结合实验表明,rhK5标记后其生物活性没有改变;
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  放射化学纯度
     Determination of Radiochemical Purity of ~(125)I-TOC and ~(125)I-F-PGA
     ~(125)I-TOC和~(125)I-F-PGA放射化学纯度的测定
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     Results:The labeling efficiency was 97.2% ± 0.4%,and the radiochemical purity was 95.5% ± 0.2%.
     结果:采用纸层析法测定的标记率和放射化学纯度分别为97.2%±0.4%和95.5%±0.2%;
短句来源
     Radiochemical purity of 125I-SOD was more than 96% and its specific activity was 0.74-1.15 MBq/μg.
     结果表明,~(125)I—SOD标记产品放射化学纯度大于96%,比活性达0.74—1.15MBq/μg。
短句来源
     The results showed that the radiochemical purity was over 95% and the specific radioactivity was 3.33×105 Bq/μg (23-HBA);
     结果显示:(1)所得标记物放射化学纯度>95%,放射性比活度为3.33×105Bq/μg(23-HBA);
短句来源
     The specific activity was 1.4ci/mmol and radiochemical purity was over 95%.
     放射比度1.4ci/mmol,放射化学纯度95%以上.
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  “radiochemical purity”译为未确定词的双语例句
     Results The specific activity of ~(125)I-Genistein was 336KBq/μg,and radiochemical purity of ~(125)I-Genistein was 98.72%.
     结果125I-Genistein比活度为336KBq/μg,放射性化学纯度为98.72%。
短句来源
     Results: The labelling rate of 125I-Ed-5 was 72.3%, the specific activity of 125I-Ed-5 was 55.2MBq/mg, the radiochemical purity of 125I-Ed-5 was 90.2%, and the inmmunoreactive fraction was 63%.
     结果:125I-Ed-5的标记率为72.3%,放射性比活度为55.2M Bq/m g,放射性化学纯度是90.2%,免疫活性分数为63%。
短句来源
     The radiochemical purity of ~(131)I-sc-7269 was 96.20%, the specific binding rate of ~(131)I-sc-7269 to T24 cells in vitro was 59.12%.
     体外131I-sc-7269与T24细胞结合率为59.12%;
短句来源
     Results ①The labeling rate of ~(125)I- NT_2 was 76%. The radiochemical purity was>98%. The specific activity was 9.71×10~(12) Bq/mmol.
     结果①(125)~I-NT_2标记率为76%,放化纯>98%,比活度为9.71×10~(12)Bq/mmol。
短句来源
     Results: The radiochemical purity of 99mTc-HYNIC-TOCA could reach 94.2% and keep to 93.5% after 6h at room temperature.
     结果:99mTc-HYNIC-TOCA的放化纯可达94.2%,室温放置6h后放化纯仍为93.5%;
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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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[5-T]-uridine-5′-monophosphate,sodium salt was prepared from [5-Br]-uridine5′-monophosphate by catalysed halogen tritium exchange,and purified by paper chro-matography.Its triphosphate was subsequently prepared from the tritium labelled uridine 5′-monophosphate through enzymatic phosphorylation with the crude enzyme preparedfrom brewer's yeasts,and purified by paper chromatography.In addition to [5-T]-5′-UTP,[5-T]-5′-UDP was obtained as a by-product.The ultraviolet absorbing curves of these isotope labelled...

[5-T]-uridine-5′-monophosphate,sodium salt was prepared from [5-Br]-uridine5′-monophosphate by catalysed halogen tritium exchange,and purified by paper chro-matography.Its triphosphate was subsequently prepared from the tritium labelled uridine 5′-monophosphate through enzymatic phosphorylation with the crude enzyme preparedfrom brewer's yeasts,and purified by paper chromatography.In addition to [5-T]-5′-UTP,[5-T]-5′-UDP was obtained as a by-product.The ultraviolet absorbing curves of these isotope labelled nucleotides are consistentwith those of 5′-UMP,and 5′-UTP respectively.The specific activities of these productsare 10ci/mmole and their radiochemical purity,more than 98%。

[5-Br]5′-UMP 钠盐经催化氚化脱卤,纸层析分离得到[5-T]5′-UMP 钠盐。[5-T]5′-UMP 钠盐经酶促磷酸化后,纸层析分离得到[5-T]5′-UTP 钠盐(同时得到[5-T]5′-UDP 钠盐)。经鉴定紫外吸收光谱性质与标准样品一致,比放射性达10居里/毫克分子,放化纯度在98%以上。

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。

Isotopic exchange reactions of sulfur-containing compounds (i. e. carbon disulfide, thiophosphoryl chloride, ethyl phosphonothionic dichloride, phenyl phosphonothionic dichloride, diethyl phosphorochloride thionate, triethyl phosphorothionate, diethyl disulfide, ethyl mercaptan) with ~(35)S in the presence of aluminum chloride were studied. With the first four compounds the reactions proceeded rapidly and smoothly, giving chemical yields of 70~95%. Radiochemical purity of these four products was identified...

Isotopic exchange reactions of sulfur-containing compounds (i. e. carbon disulfide, thiophosphoryl chloride, ethyl phosphonothionic dichloride, phenyl phosphonothionic dichloride, diethyl phosphorochloride thionate, triethyl phosphorothionate, diethyl disulfide, ethyl mercaptan) with ~(35)S in the presence of aluminum chloride were studied. With the first four compounds the reactions proceeded rapidly and smoothly, giving chemical yields of 70~95%. Radiochemical purity of these four products was identified by the preparation of derivatives. With a high ratio of sulfur compound to ~(35)S, the radiochemical yield could approach the chemical yield. This method proved to be a good method for preparing ~(35)S labelled compounds. Compounds containing both P=S and R—O—P linkages, such as diethyl phosphorochloride thionate and triethyl phosphorothionate, exchanged only slightly, probably as a result of the side reaction of R—O—P with aluminum chloride. Diethyl disulfide exchanged about 12%, and ethyl mercaptan did not exchange at all.In connection with the mechanism of catalytic action of aluminum chloride, the following phenomena were observed: A complete exchange could be effected when carbon disulfide was heated at 100℃ for 1 hr or thiophosphoryl chloride heated at 80℃ for 20 min. These reactions proceeded with color change (when darkish aluminum chloride was used, no color change could be observed indicating no exchange). As it seemed quite possible that these reactions proceeded through a radical mechanism, an ESR study was undertaken. Signals were observed, and both showed three lines, with g values 2.0039, 2.0052, 2.0072 (DPPH used as a standard) for thiophosphoryl chloride and 2.0046, 2.0065, 2.0067 for carbon disulfide, We suppest that aluminum chloride as a strong Lewis acid might attack and open the eight membered ring of elemental sulfur, and the linear chain thus formed suffered homolytic fission and provided sulfur radicals which could attack and exchange with the sulfur atom of other sulfur compounds.

研究了~(35)S与C=S、P=S、C—S—S—C、C—SH等类型硫化物用三氯化铝催化的交换反应。二硫化碳、硫代磷酰氯、乙基硫代膦酰二氯、苯基硫代膦酰二氯等用此法交换,均得到良好的化学产率与放射产率。二硫化碳或硫代磷酰氯与三氯化铝、硫共热,显示三个顺磁共振峰,因此初步推测交换反应为自由基反应。含有R—O—P键的P=S类化合物与三氯化铝发生副反应,故未能很好交换。二乙基化二硫的交换率颇低,乙硫醇则无交换。

 
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