核的

We have established the perfect metrological standard equipment and calibrating method, we have had the ability to provide the metrological assurance for the environmental radioactivity air survey.

在核设施退役过程中，通过航测全面掌握拟退役核设施及周围地区的放射性辐射现状，为核设施退役的放射性治理在范围和程度上提供了科学有效的数据，可以有效地支持核设施的安全退役。

Mrnas: these provide protein coding information to ribosome. some snrnas: these function in a variety of nuclear processes, including rna splicing and processing. it is very sensitive to inhibition by -amanitin.

rna聚合酶ⅱ催化合成 mrna的前体核内不均一rna以及核内小分子rna.mrnas是核糖体翻译蛋白质的模板；核内小分子rna参与了核内的多种加工过程，包括rna的剪切加工。rna聚合酶ⅱ对α-鹅膏蕈碱高度敏感。

Using Pseudomonas syringae and Pantoea ananas , the dominant ice nucleation active bacteria strains from Yunnan province, as receptors of genetic engineering recombination, and Escherichia coli S17/pZJ25∶∶Tn5 as donator. By transposon Tn5 induced mutants method, the Tn5 was inserted and integrated into the genome of wild type INA + bacteria. INA + mutant as INA - when the linear continuous of INA + gene destroyed.

以云南省冰核细菌的优势种类丁香假单胞菌Pseudomonassyringae和菠萝泛菌Pantoeaananas为重组基因工程菌的受体菌，采用Tn5转座子诱变技术，以大肠杆菌EscherichiacoliS17/pZJ2 5∶∶Tn5作为转座子诱变的供体菌，使Tn5插入并整合到冰核细菌基因组中，使冰核基因的线性连续性被破坏，失去冰核活性。

When Tetrahymena, Euglena, Crypthecodinium and Oxyrrhis were stained with the same technique, although all the nuclei gave positive reactions, no precentromeres could be distinguished; within nuclei there were only patches composed of minute fluorescent spots seen.

在对小眼虫和寇氏隐甲藻作制备核骨架的细胞分级抽提处理后，细胞核仍还都呈阳性反应。这表明与高等真核生物的相似，低等真核生物的着丝粒蛋白也是与核骨架紧密结合的。

Chromosomal analysis of skin cells from 8 tufted deer were studied by using primary culture and subculture.We found 4 different karyotypes in all and a new karyotype, different with the others studied before, was found. There were 47 chromosomes in somatic cell of the new karyotype, including a pair of heteromorphic X chromosomes, one was telocentric chromosome, the other was subtelocentric chromosome.

采用原代培养和传代培养方法对来自成都动物园的8头毛冠鹿的皮肤细胞进行了染色体研究，结果出现4种不同的核型，有一种核型与以前所报道的几种核型不一致，确定为新核型（2n=47♀，X染色体为异型，）。

Some research and analysis on the reaction of 2,4-difluoronitrobenzene and nucleophilic reagent alcohol sodium (methyl alcohol ,ethyl alcohol, propyl alcohol, n-butyl alcohol, t-butyl alcohol, et hl) and the reaction choice of opposite -F in different solvent and conditions have done in this paper.

论文以2，4-二氟硝基苯为主要原料，研究了其与亲核试剂醇钠(甲醇、乙醇、丙醇、正丁醇、叔丁醇等)在不同溶剂中的反应情况，讨论了在几种代表性的溶剂——醇、四氢呋喃、苯、N，N-二甲基甲酰胺中亲核取代反应的情况，研究了温度、反应时间、亲核试剂、溶剂等条件对亲核取代反应的影响。

However, its decision surface is still a hyperplane, In order to enhance its classification ability and solve the limitations of kernel perceptron algorithm, kernel method is used to generalize the α-LMS algorithm without considering whether the projected data set in high dimensional space is linearly separable or not.

另外，经典的核感知器算法也只能解决高维空间中的线性可分问题，对线性不可分问题仍无法收敛，为提高α-LMS算法的分类能力和克服核感知器算法的局限性，本文利用核方法构造了核α-LMS算法。

Results We found that (1) at 0 Gy, MN yield was 11.3 ± 2.7 per 1000 binucleated cells.

结果 (1)在 0 Gy时，每 10 0 0个双核细胞的微核量是 11.3± 2 。7，人参水提取物≥ 5 0 0μg· ml- 1 时微核量下降，但微核量和人参水提取物的浓度之间的差异是显著的。

The observational study of extragalactic H2O megamaser sources and molecular emission lines associated with AGNs is a very efficient tool to investigate characteristics of certral sources in AGNs and circumnuclear toruses of gases and dusts.

对与活动星系核成协的河外超脉泽源及分子谱线的观测和研究是探测和研究活动星系核核区中央源、拱核气体和尘埃环性质的非常有效的工具。

Methods:Choose 126 anterior teeth of 112 patients at random,age from 21 to 46, 56 teeth were restored with cement screw post and 70 teeth were restored with glassfiber post,then all cases were restored with porcelain fused metal crown.

随机选取21—46岁的病例112例共126颗前牙进行即刻修复，其中56个牙制作螺纹桩核，70个牙制作纤维桩核，桩核完成后均行烤瓷全冠修复。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。