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条件研究     
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  study on conditions
     Study on Conditions for Producing Differential Capillary Effect
     形成差动毛细效应的条件研究
短句来源
     Study on conditions for hydrolyzing higher purified flavonoids
     高纯银杏黄酮水解条件研究
短句来源
     A STUDY ON CONDITIONS OF FORMATION FOR HPAM/ALUMINUMCITRATE COLLOIDAL DISPERSION GELS
     HPAM/柠檬酸铝胶态分散凝胶形成条件研究
短句来源
     Study on conditions of polymerization of bioabsorbable PDLLA
     生物可吸收材料PDLLA的聚合条件研究
短句来源
     Study on conditions of chitosanase from Aspergillus fumigatus by liquid fermentation
     烟曲霉产壳聚糖酶液体发酵条件研究
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  condition study
     Experimental Condition Study for Using 200MeV Electron Beam and Its Bremsstrahlung
     使用200MeV电子束及其轫致辐射的实验条件研究
短句来源
     A dynamic boundary condition study on doing Reynolds equation
     关于Reynolds方程求解的动态边界条件研究
短句来源
     The Isolation and Preliminary Culture Condition Study of Photosynthetic Bacterium M-01
     光合细菌M-01的分离及培养条件研究
短句来源
     The Ecological Condition Study of Bioremediation Petroleum Contaminated Soil
     石油污染土壤生物修复的生态条件研究
短句来源
     2)to pay equal attention to coal resource evaluation and coal resource formation condition study;
     (2 )煤炭资源评价与资源形成条件研究并重 ;
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  condition for
     STUDY ON FERMENTATION CONDITION FOR PCA PRODUCT BY Pseudomonas fluorescens M18
     荧光假单胞菌株M18产PCA发酵条件研究
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     This paper reports the optimal condition for the microarray of 5′ TR/3′ NH 2 double terminus modified single stranded deoxyribonucleic acid probe on 10 μm carboxylate polystyrene bead surface in the presence of 1 Ethyl 3 (3 dimethylaminopropyl) carbodiimide (EDC).
     优化在 1 乙基 3 ( 3 二甲基氨丙基 ) 碳化二亚胺 (EDC)存在下 ,5′ NH2 单末端和 5′ TR 3′ NH2 双末端修饰单链脱氧核糖核酸 (DNA)探针在 10 μm羧基聚苯乙烯小珠表面进行微阵列的条件 ,研究 5′ NH2 单末端修饰DNA探针与其碱基互补序列进行的固 液杂交特性。
短句来源
     Study on the Analysing Condition for the Main Organic Composition in J Acid Waste Liquor with HPLC
     J酸废母液主要有机成份的HPLC分析条件研究
短句来源
     Objective To optimize the condition for inducing the differentiation of 3T3-L1 preadipocytes into adipocytes and study the expression of PTEN tumor suppression gene in this process, aiming to understand the regulatory role of PTEN in normal adipocyte differentiation and collect laboratory evidence for developing drugs targeting PTEN.
     目的优化3T3-L1脂肪细胞分化条件,研究信号因子PTEN在分化过程中的表达,以了解PTEN是否通过表达量来调节正常脂肪细胞形成,为探索PTEN的药物靶标作用奠定基础。
短句来源
     The Study on the Analyzing Condition for the Main Organic Composition in Tobias Acid Waste Mother Liquor with HPLC
     吐氏酸废母液主要有机成份的HPLC分析条件研究
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  condition research
     Condition research on modified bentonite by carbon entraining roasting method
     膨润土加碳焙烧改性条件研究
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     The Process Condition Research of Decomposing Phosphate Rock with Phosphoric Acid
     磷酸分解磷矿的工艺条件研究
短句来源
     Best Condition Research of Hydrodynamic Cavitation Press
     水力空化的最佳条件研究
短句来源
     Exploration for condition research of construction of bacterial artificial chromosome (BAC) library of Guanzhong milk goat
     关中奶山羊BAC文库构建条件研究
短句来源
     THE APPLICAITION OF ISOTOPIC TECHNIQUE TO THE HYDROGEOLOGICAL CONDITION RESEARCH IN A NUCLEAR WASTE DISPOSAL SITE
     同位素技术在某核废处置场区水文地质条件研究中的应用
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  condition study
According to the results obtained from the boundary condition study of the burnishing process, cylindrical polycrystalline diamond (PCD) tools have been designed and fabricated.
      
Processing conditions for these experiments followed the results of the aforementioned processing condition study.
      
  condition for
We also prove the shifted cocycle condition for the twistors, thereby completing Fr?nsdal's findings.
      
We give a simple necessary and sufficient condition for a Schubert
      
A sufficient condition for the sequence of sampling functions to constitute a frame is derived.
      
A necessary condition for Calderón-Zygmund singular integral operators
      
A necessary and sufficient condition for dual Weyl-Heisenberg frames to be compactly supported
      
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  其他


Since 1944, catalytic dehydrogenation of butylene to butadiene has remained the main industrial process for butadiene manufacture, in spite of its rather low single pass yield and ultimate yield to butadiene. Recently, Tyuryaev reported that butylene can be dehydrogenated to butadiene over oxides of metal of Ⅴ—Ⅵ groups in the presence of oxygen. Optimum yield (50% butadiene yield per pass) would be reached at 530°, 600 hr~(1) space velocity (in terms of butylene) and butylene: oxygen: water vapour = 1:0.5:5...

Since 1944, catalytic dehydrogenation of butylene to butadiene has remained the main industrial process for butadiene manufacture, in spite of its rather low single pass yield and ultimate yield to butadiene. Recently, Tyuryaev reported that butylene can be dehydrogenated to butadiene over oxides of metal of Ⅴ—Ⅵ groups in the presence of oxygen. Optimum yield (50% butadiene yield per pass) would be reached at 530°, 600 hr~(1) space velocity (in terms of butylene) and butylene: oxygen: water vapour = 1:0.5:5 molar ratio, with 90% selectivity. In addition, several patents with similar results were issued.

本文报导了丁烯氧化脱氢制丁二烯用催化剂及反应条件研究的初步结果。在L-228,L-2312,L-243等几种催化剂上,在适宜的反应条件下,丁二烯单程收卒可达70—80%(体),选择性为90%左右.操作条件的考察表明:在温度410—470℃、丁烯空速100—300小时、氧/丁烯0.50—0.75、水蒸气用量为丁烯进料克分子的4—12倍的范围内,丁二烯收率和反应选择性都比较高。催化剂的稳定性和再生性能尚有待进一步的改进。最后提出了丁烷脱氢制丁二烯新二步法的建议。

An analytical procedure for the determination of strontium-90 in environmental samples by extraction with di-2-ethylhexylphosphoric acid (HDEHP) is described. Strontium-90 is estimated by solvent extraction of the daughter product yttrium-90 in the system HNO_3-HDEHP-toluene. The procedure is convenient, fast and accurate. ~(85)Sr tracing results show that for biological material strontium recoveries are 95% and for fallout material~90%. In the presence of naturally radioactive isotopes and fission products,...

An analytical procedure for the determination of strontium-90 in environmental samples by extraction with di-2-ethylhexylphosphoric acid (HDEHP) is described. Strontium-90 is estimated by solvent extraction of the daughter product yttrium-90 in the system HNO_3-HDEHP-toluene. The procedure is convenient, fast and accurate. ~(85)Sr tracing results show that for biological material strontium recoveries are 95% and for fallout material~90%. In the presence of naturally radioactive isotopes and fission products, the procedure is also applicable. For ~(140)Ba-~(140)La, fission products from which strontium and barium have been removed and for ~(212)Pb-~(212)Bi belonging to the thorium series, the decontamination factors have attained 10~4. Analytical results of the samples are perfectly satisfactory. The significance test showed that this method is comparable to the fuming nitric acid method.Furthermore, the application is described of HDEHP and a quaternary amine, N_(263), to achieve rapid determination of strontium-90 via direct extraction of yttrium-90. A rapid method is given, and when biological samples are analysed, the results can be reported in two hours.

本文叙述用二-(2-乙基己基)磷酸(HDEHP)萃取测定环境样品中锶-90的各种条件的研究,并在最佳条件下提出分析程序。锶-90的含量通过HNO_3-HDEHP-甲苯体系中溶剂萃取子体产物钇-90而获得。程序简便、快速而准确。~(85)Sr示踪的结果表明,锶回收对于生物样品是95%,对于沉降物~90%。程序在有天然放射性同位素和裂变产物存在下也是可用的。对于~(140)Ba-~(140)La,去锶、钡裂变产物,钍系的~(212)Pb-~(212)Bi,去污系数达到了10~4。样品分析的结果十分满意。显著性检验证明本方法的结果与发烟硝酸法的结果一致。本文还进一步讨论应用二-(2-乙基己基)磷酸和季胺N_(269)实现直接萃取~(90)Y而快速测定~(90)Sr的问题,提供的快速测定方法,分析生物样品时,能在二小时之内报告结果。

An analytical procedure for the determination of strontium-90 in environmental samples by extraction with di-2-ethylhexylphosphorio acid (HDEHP) is described. Strontium-90 is estimated by solvent extraction of the daughter product yttrium-90 in the system HNO_3-HDEHP-toluene. The procedure is convenient, fast and accurate. ~(85)Sr tracing results show that for biological material strontium recoveries are 95 % and for fallout material~90%. In the presence of naturally radioactive isotopes and fission products,...

An analytical procedure for the determination of strontium-90 in environmental samples by extraction with di-2-ethylhexylphosphorio acid (HDEHP) is described. Strontium-90 is estimated by solvent extraction of the daughter product yttrium-90 in the system HNO_3-HDEHP-toluene. The procedure is convenient, fast and accurate. ~(85)Sr tracing results show that for biological material strontium recoveries are 95 % and for fallout material~90%. In the presence of naturally radioactive isotopes and fission products, the procedure is also applicable. For ~(140)Ba-~(140)La, fission products from which strontium and barium have been removed and for ~(212)Pb-~(212)Bi belonging to the thorium series, the decontamination factors have attained 10~4. Analytical results of the samples are perfectly satisfactory. The significance test showed that this method is comparable to the fuming nitric acid method.Furthermore, the application is described of HDEHP and a quaternary amine, N_(263), to achieve rapid determination of strontium-90 via direot extraction of yttrium-90. A rapid method is given, and when biologioal samples are analysed, the results can be reported in two hours.

本文叙述用二-(2-乙基已基)磷酸(HDEHP)萃取测定环境样品中锶-90的各种条件的研究,并在最佳条件下提出分析程序。锶90的含量通过HNO_3 -HDEHP-甲苯体系中溶剂萃取子体产物钇-90而获得。程序简便、快速而准确。~(85)Sr示踪的结果表明,锶回收对于生物样品是95%,对于沉降物~90%。程序在有天然放射性同位素和裂变产物存在下也是可用的。对于~(140)Ba-~(140)La,去锶、钡裂变产物,钍系的~(212)Pb-~(212)Bi,去污系数达到了10~4。样品分析的结果十分满意。显著性检验证明本方法的结果与发烟硝酸法的结果一致。本文还进一步讨论应用二-(2-乙基己基)磷酸和季胺N_(266)实现直接萃取~(90)Y而快速测定~(90)Sr的问题,提供的快速测定方法,分析生物样品时,能在二小时之内报告结果。

 
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