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利用同位素
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  he isotope
     he isotope tracer techniques are applied to explore the transfer of HTO from waterbody to land.
     利用同位素示踪技术研究了进入水体的HTO向陆地的迁移。
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  “利用同位素”译为未确定词的双语例句
     Study on utilization of nitrogen and phosphorus from compound fertilizer by rice using isotopes 15N and 32P
     利用同位素~(15)N、~(32)P研究水稻对混(复)合肥料氮磷的吸收利用
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     The analytical content of Re standard A was (516.48±0.35) ng/g (2σ,n =5) (using) ID method with precision and accuracy of less than 0.10%.
     利用同位素稀释法测得铼标样A的浓度为(516.48±0.35)ng/g(2σ,n=5); 测量精度和准确度均优于0.10%;
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     Utilizing Eliashberg equation and the relation between Eliashberg functions for varied isotopes,we have calculated the Tc for La1.85 Sr0.15 CuO4,corresponding to 16O and 18O portion respectively,obtaining the isotopical exponent a.
     利用同位素间 Eliashberg 函数的关系及 Eliashberg 方程,我们计算了 La_(1.85)Sr_(0.15)CuO_4对应于~(16)O 及~(18)O 的 T_c,从而得到同位素指数α的值.
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     This article reviewed the characteristic of adsorption, leach, migration and degradation of 14C_Chlorsulfuron in soil by radioisotope trace and analyzed the residual dynamic of 14C_Chlorsulfuron .
     本文综述了利用同位素元踪法研究14C_绿磺隆在土壤中的吸附、淋溶、迁移和降解等特性 ,分析了14C_绿磺隆在土壤中的残留动态
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     The contributions of coal combustion pollution source and motor discharge to benzo[a]pyrene, indeno[1,2,3-cd]pyrene, and benzo[ghi] perylene in the Urumchi urban area source 28%, 3% and 5% respectively for the motor discharge and 72%, 97% and 95% for the coal combustion.
     利用同位素质量平衡二元模型,计算了燃煤污染源与机动车排气对城区苯并(a)芘、茚并(1,2,3-cd)芘和苯并(ghi)苝的贡献,前者分别为72%、97%和95%,后者分别为28%、3%和5%.
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     While E.
     利用E.
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     With the X.
     利用X .
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     Estimation of Lake Evaporation by Stable Isotopic Ratio
     利用稳定同位素比率估计湖泊的蒸发
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     Evaluation on Soil Fertilized with Different Phosphate by Radioisotope Trace Technology
     利用同位素技术对不同磷肥的土壤评价
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  he isotope
A comparison of HCG component contents with He isotope abundances and ratios showed that the HCG were probably not supplied by mantle-derived melts.
      
The He isotope composition includes an admixture of mantle 3He, which is suggested by the high measured 3He concentrations, exceeding the calculated values, and high 3He/36Ar ratios in the xenoliths and their host lamprophyres.
      
The hyperfine structure of the3He 1s 3p3P state and the3He-4He isotope shift is determined by high precision measurements of the 1s2s3S1-1s 3p3p3PJ transition frequencies near 389 nm.
      
The Rc/Ra decrease is attributed to the He isotope fractionation during rapid magma ascent and degassing.
      
A study of the 3He isotope gives a unique opportunity to resolve the Yang-Yang dilemma.
      
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The relation between Crabtree effect and protein biosynthesis has been studied in Ehrlich ascites tumor cells. It has been found that the addition of succinate to washed tumor cells, which had a low level of endogenous respiration, caused marked increase both in the rate of respiration and the rate of incorporation of C~(14)-labeled glycine into cellular protein. Thus active protein biosynthesis could be maintained solely on energy released in the oxidative metabolism of succinate, a fact not supporting the...

The relation between Crabtree effect and protein biosynthesis has been studied in Ehrlich ascites tumor cells. It has been found that the addition of succinate to washed tumor cells, which had a low level of endogenous respiration, caused marked increase both in the rate of respiration and the rate of incorporation of C~(14)-labeled glycine into cellular protein. Thus active protein biosynthesis could be maintained solely on energy released in the oxidative metabolism of succinate, a fact not supporting the respirationdamage theory of tumor cells suggested by Warburg. When glucose or its analog, 2-deoxyglucose, was added together with succinate, both the rate of respiration and the rate of incorporation of C~(14)-labeled glycine were affected, the latter, however was much more markedly inhibited than the former. This indicates that under these conditions energy required for protein biosynthesis may not be so readily available, probably through the compartmentation of ATP within the mitochondria as suggested by a number of workers.

我們利用同位素C~(14)-标記甘氨酸参入蛋白貭的作用研究艾氏腹水肿瘤細胞中的Crabtree效应,观察由氧化作用释放出的能量被利用的情况。实驗結果說明艾氏腹水肿瘤細胞的呼吸效能是有效的,由琥珀酸氧化供应的能量可以支持旺盛的蛋白貭生物合成。說明由氧化磷酸化作用生成的ATP可以透到綫粒体外以供应蛋白貭生物合成的需要。若在加入琥珀酸同时加入葡萄糖或2-脫氧葡萄糖而引起Crabtree效应后,肿瘤細胞的呼吸略有降低,但是C~(14)标記甘氨酸参入蛋白貭的速度却比单独加入琥珀酸时要小得多,而仅接近单独加入葡萄糖时的参入速度,我們认为这可能是由于在引起Crabtree效应的条件下产生了线粒体中ATP局部化的緣故。

In the process of soil water movement, the soil water content in the surface layer of a sandy soil changed firstly in the initial stage. In the duration of time, the layer in which the soil water content began to change gradually moved downward in the soil profile. After a certain time, about 12 minutes, such variation occured mainly in the middle part of the soil profile and changes either in the surface layer or in the bottom layer of the soil profile were insignificant.

1.在砂土释水过程中,首先是砂土表层水分含量发生变化,随着时间的延长,水分开始变化的层次,依次加深,达到一定时间后,其变化主要发生在中部;而表层及下层变化甚小。2.释水量及释水速度随着水位差增加而增加。3.释水速度因弱透水层的出现部位不同而有显著的变化,该层出现愈浅速度愈慢,中位及深位者虽然对释水总量影响较前者为小,但改变了砂柱的水分分布状况。4.根据初步试验结果,我们认为利用同位素研究,包括土壤释水性在内的水分运动,方法简便,灵敏度较高,便于了解土壤水分连续运动的过程,而利用普通方法将增加极大的工作量,且不易准确。

The present research work aims at improving the linearity and sensitivity of displacement meas ure- ment with radioactive isotopes by taking the advantage of accumulated factors formed by radioactive multi-diffusion. In this paper,the experiment apparatus and the evaluation of their parameters are recommended followed by an analysis of its static and dynamic characteristics.By using a 10 millicurie radiant source, the linear measurability may reach 180 millimeter with a non-linear error less than 2%. For the...

The present research work aims at improving the linearity and sensitivity of displacement meas ure- ment with radioactive isotopes by taking the advantage of accumulated factors formed by radioactive multi-diffusion. In this paper,the experiment apparatus and the evaluation of their parameters are recommended followed by an analysis of its static and dynamic characteristics.By using a 10 millicurie radiant source, the linear measurability may reach 180 millimeter with a non-linear error less than 2%. For the measuring system herein described, no dynamic distortion would occur with in a working frequency of 50Hz. Its radiation closage is rather low so that it is very safe to operate. This system can be used in dynamic tests for measuring the displacement of moving parts of engineering machi-nery and in particular, it is most advantageous for measuring the- dis-placement of high-speed pistons in the enclosed high-pressure cylinders that can not otherwise be done with conventional electrometrical methods.

本研究系利用同位素多次散射所形成的累积因子以改善放射性同位素测试法的线性度和灵敏度。文中介绍了实验装置及其参数的确定,分析了实验装置的静、动态特性。采用10毫居里放射源,线性可测范围达到180毫米,非线性误差,小于2%。本文所述测量系统在工作频率为50赫芝之内,基本无动态失真。实验工作人员所受放射线剂量很低,工作安全,能用于工程机械的机件位移的动态测定,特别是对用电测法无法进行的高压密封缸中高速活塞位移的测定尤为优越。

 
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