测定

Analysis f K and Na in nepheline were curried out with higher precision and repeatability by means of adding fluohydric acid during sample melting to remove SiO2, adjusting the ratio of K and Na in the solution to reduce the mutual interference of the two elements, and adding cesium chloride to eliminate ionization interference.

摘要本方法用于测定霞石中的钾、钠，主要通过在溶样时加入氢氟酸除去二氧化矽，调整溶液中钾、钠的含量，消除互相之间的干扰，加入氯化铯消除电离因素的干扰，提高了分析结果的准确性和重现性，使测定结果更接近化学分析值。

In addition, Immune nephelometry assay was imployed to analysis the level of rats' plasmic Fg, in the mean time, Platelet aggregation meter was used in observing the ratio of rats' platelet aggregation at 3 min. and 10 min, respectively.

实验采用酶联免疫吸附法测定各组大鼠血浆中TXB2、6-Ke-PGF1α、PGE2的水平；另外，采用免疫比浊法测定两组大鼠血浆中纤维蛋白原的含量，并同时观察各组大鼠3min，10min内的血小板聚集率。

All the methods used now have a common technical difficulty: The presence of large amount of uranium makes unacceptable interferences to the determination of neptunium. A separation procedure is absolutely necessary to separate neptunium from uranium completely.

国内一直没有一个比较理想的准确、灵敏的方法，解决铀产品中微量镎的测定问题，主要原因是现有的方法存在一个共同的技术难点：常量的铀对微量镎的测定干扰很大，必须要将常量铀与微量镎定量分离。

Conventional radiochemical methods such as alpha spectrometry, neutron activation analysis, liquid scintillation system, fission track and gamma spectrometry for the quantitative determination of neptunium and plutonium often require complicated and time-consuming sample preparation and separation procedures.

研究环境中铀、镎、钚等长寿命放射性核素的精密测定，对保护公众安全和保护环境，对了解核设施的历史操作情况和现状，都具有重要意义。环境样品基体复杂，铀、镎和钚等锕系元素含量非常低，在复杂的生态条件下，这些核素常常具有复杂多变的化学形态，要准确测定其含量，必须要有灵敏可靠的检测方法。

Tb3+ in DTPA-Tb is replaced by Np4+ giving DTPA-Np and Tb3+, then the free Tb3+ complex with Tiron producing Tiron-Tb which is a strong fluorescence substance. We use the fluorescence signal of the ligand to measure Np4+ in the system. The high sensitivity of Tiron-Tb makes the method for neptunium sensitive.

测定Tb~(3+)有一个极灵敏的方法，Tb~(3+)和Tiron结合生成强荧光的络合物Tiron-Tb，其检测下限可达4.8×10~(-12)g／ml Tb~(3+)，利用荧光法检测Tiron-Tb的高灵敏性，从而实现镎的间接测定。

Finally, the change of neuroglia which expressing GFAP and CD11b was counted by immunohistochemistry and the expression of IFN-γ/IL-10 in serum was measured by ELISA.

用免疫组化法测定腰髓中表达GFAP和CD11b的阳性细胞数；用ELISA法测定血清IFN-γ和IL-10水平。

The result indicated that the percentage of lymphocyte were decreased, the percentage of neutrophile granulocytes were magnified significantly with the lighting time increasing, which was due to the level of the melatonin inhibited in the long time lighting; and to supply different exogenous dose, induce the percentage of lymphocyte were magnifying, the percentage of neutrophile granulocytes were decreased. And the statistical analysis showed there was significant difference.

结果表明：在给予不同光照时间的条件下，随着光照时间的延长，褪黑素的分泌水平受到抑制，导致具有特异免疫功能的淋巴细胞百分率下降，具有非特异免疫功能的中性粒细胞百分率上升，经统计分析表明不同组间的测定结果均存在显着差异；采用24h全天光照，用以模拟机体切除松果腺的情况，再给予一定剂量外源性褪黑素，导致机体内具有特异免疫功能的淋巴细胞百分率上升，具有非特异免疫功能的中性粒细胞百分率下降，经统计分析表明不同组间的测定结果均存在显著差异，并且高剂量褪黑素对机体的影响更为明显。

Methods: Cell proliferation was measured by crystal voilet staining assay. The activity of lactic acid dehydrogenase in the upper layer of culture solution was tested to examine the damage to the cell membrane.3H-TdR was used to study the effect of porphyrin nitrogen mustard on the synthesis of DNA.

用结晶紫染色法测定卟啉氮芥对人肝癌细胞SMMC7721的光动力抑制效应，用测定培养上清乳酸脱氢酶活性方法研究光动力作用对人肝癌细胞SMMC7721细胞膜的作用，用3H-TdR掺入法研究光动力作用对人肝癌细胞SMMC7721DNA合成的影响。

The metalloproteins which are widely distributed in vivo are very important target molecules of NO. A new Y/〓 reaction system which can form Y-NO bond has been established and has been used to measure the NO affinity of metalloporphyrins as metalloprotein models. Three kind of bond energies of the Co-NO bonds in series of cobalt nitrosyl tetraphenylporphyrins have been determined by thermodynamic cycles combined with calorimetric measurements and relevant electrochemical data.

本文以金属卟啉模拟体内重要的NO靶分子金属蛋白，通过确立新的适于量热和电化学测定的Y／〓成Y-NO键反应体系，利用合适的热力学循环，建立了新的适于金属卟啉体系的NO亲合势的测定方法，得到了苯腈中系列亚硝基四苯基钴卟啉Co-NO键的键能，即钴卟啉NO亲合势的定量标度，以表征钴卟啉的NO结合能力。

Three kind of bond energies of the Co-NO bonds in series of cobalt nitrosyl tetraphenylporphyrins have been determined by thermodynamic cycles combined with calorimetric measurements and relevant electrochemical data.

本文以金属卟啉模拟体内重要的NO靶分子金属蛋白，通过确立新的适于量热和电化学测定的Y／〓成Y-NO键反应体系，利用合适的热力学循环，建立了新的适于金属卟啉体系的NO亲合势的测定方法，得到了苯腈中系列亚硝基四苯基钴卟啉Co-NO键的键能，即钴卟啉NO亲合势的定量标度，以表征钴卟啉的NO结合能力。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。