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radiochemical
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  放射化学
     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
短句来源
     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
     (EC+β~+) decay study of ~(130)Ce and it's radiochemical separation
     ~(130)Ce(EC+β~+)衰变研究及其放射化学分离
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);
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  放射化学的
     In this study the ability of gut extracts from the larva and adult of cotton bollworm, Helicoverpa armigera and armyworm, Mythimna separata to inhibit juvenile hormone (JH) synthesis was tested in vitro by radiochemical assay.
     利用放射化学的方法分别检测了棉铃虫Helicoverpaarmigera、粘虫Mythimnaseparata幼虫和成虫肠中咽侧体静止激素 (allatostatin ,AS)样的活性物质。
短句来源
     A radiochemical assay has been used for the measurement of juvenile hormone (JH) synthesis in vitro by corpora allata (CA) from adults of Tenebrio molitor. The time course of juvenile hormone (JH) synthesis, the symmetry of right and left CA and CA activity during adult development were assayed.
     采用放射化学的方法,测定黄粉虫咽侧体(Corporaallata,CA)体外保幼激素(Juvenilehormone,JH)合成的时间进程、左右侧CA合成JH的对称性以及成虫发育期CA的活性变化。
短句来源
  “radiochemical”译为未确定词的双语例句
     Radiochemical Separation and Purification in Study of (EC+β ̄+) Decay of  ̄(130)Ce
     Radiochemical Separation and Purification in Study of (EC+β~+) Decay of ~(130)Ce
短句来源
     Radiochemical Separation in Study of (EC+β ̄+) Decay of  ̄(128)Ce and  ̄(129)Ce
     Radiochemical Separation in Study of(EC+β~+) Decay of ~(128)Ce and ~(129)Ce
短句来源
     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
     13 elements including La, Ce, Nd, Sm, Gd, Eu, Tb, Ho, Tm, Yb, Lu, Zn and Cs have been determined by radiochemical separation.
     用放化分离法测定了La,Ce,Nd,Sm,Eu,Gd,Tb,Ho,Yb,Tm,Lu,Zn和Cs等13个元素。
短句来源
     The whole radiochemical recovery was 85.0±4.9×10-2.
     其全程放化回收率为85.0±4.9×10-2
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  radiochemical
Functional activity of blood cells in fish exposed to radiochemical industrial sewage
      
The effect of the gas components of the working medium, which develops during the reprocessing of waste nuclear fuel at radiochemical plants, on the 129I fluorescence excited by radiation of He-Ne laser (633 nm) is studied.
      
The results were compared to the data obtained using radiochemical separation.
      
This instrument can measure 241Am activity in samples, without their concentration and radiochemical treatment, against a high (~10-3) background level due to the accompanying radionuclides (134Cs, 137Cs, 154Eu, 155Eu, etc).
      
A Radiochemical Installation for Handling Small Amounts of High-Purity Gases
      
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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。

The yields of 15 and 17 fission, products have been obtained by radiochemical determinations in ~(12)C-induced fission of ~(209)Bi and ~(238)U respectively. From these data, the mass distributions of fission fragments are calculated based on three different hypotheses for the charge distribution. The results seem to indicate that the hypothesis of equal charge displacement gives the best fit to the Gaussian distribution for the masses of the fission fragments. By comparison with the mass distributions...

The yields of 15 and 17 fission, products have been obtained by radiochemical determinations in ~(12)C-induced fission of ~(209)Bi and ~(238)U respectively. From these data, the mass distributions of fission fragments are calculated based on three different hypotheses for the charge distribution. The results seem to indicate that the hypothesis of equal charge displacement gives the best fit to the Gaussian distribution for the masses of the fission fragments. By comparison with the mass distributions for ~(209)Bi (~(12)C, f), ~(238)U(~(12)C, f) and ~(197)Au(~(12)C, f) in our early measurement, we find that for fission parameter Z~2/A>37, the width of the mass distributions increases with Z~2/A rapidly.

在~(12)C离子引起的~(209)Bi和~(238)U的裂变中,用放射化学方法分别测量了15个和17个裂变产物的产额.根据这些数据,用三种电荷分布假设计算了裂变碎片的质量分布.计算表明,等电荷位移假设得到的结果一般和裂变碎片高斯质量分布曲线拟合得最好.比较了~(209)Bi(~(12)C,f),~(238)U(~(12)C,f)以及我们较早测量得到的~(197_Au(~(12)C,f)的质量分布曲线,指出当裂变参数Z~2/A>37时,质量分布宽度随Z~2/A的增加而迅速增加.

In the present paper a method of extraction chromatography to the separation and determination of stronium - 90 in biological samples is reported. The daughter product yttrium-90 belonging to stronium -90 is selectively separated on the column of poly (vinyl chloride) saturated with di (2 -ethylhexyl) phosphoric acid (HDEHP) via twice treatments. After washing the column with the dilute acid yttrium-90 is eluted by 6N HNO3. The chemical recovery of stronium is estimated by atomic absorption spectrophotometry....

In the present paper a method of extraction chromatography to the separation and determination of stronium - 90 in biological samples is reported. The daughter product yttrium-90 belonging to stronium -90 is selectively separated on the column of poly (vinyl chloride) saturated with di (2 -ethylhexyl) phosphoric acid (HDEHP) via twice treatments. After washing the column with the dilute acid yttrium-90 is eluted by 6N HNO3. The chemical recovery of stronium is estimated by atomic absorption spectrophotometry. The chemical recovery of yttrium is estimated by the precipitation of oxalat. The radioactive content is measured by the low-background counting. The radiochemical recoveries by using 8sSr and "Y tracer are consistent with the chemical recoveries, >90%. Analytical results of the samples are perfectly satisfactory. The decontamination factors attain to >10J. The procedure has achieved simplicity, speed and accuracy. The method can be applied to determination of stronium-90 in biological samples of food health, environment protection and radioactive monitoring.

本文报道一种萃取色层分离和测定生物样品中~(90)Sr的方法。用HDEHP—聚氯乙烯为固定相,经过两次处理将~(90)Sr的子体~(90)Y选择性地分离在柱上,用稀酸洗涤后被6N HNO_3洗提下来。原子吸收分光光度法测定锶的化学回收率,草酸盐沉淀法测定钇的化学回收率,低本底计数测量放射性强度。~(85)Sr和~(90)Y示踪的放化回收率与化学回收率一致,大于90%.样品分析的结果令人满意,去污系数大于10~3。程序简便、快速而准确,适用于食品卫生、环境保护和放射性监测分析.

 
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