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Two magnetic triphase catalysts of comb-like polyether s supported by γ-Fe2O3 were synthesized, and their catalytic behaviors in the iodo-substitution, etherization and the addition reaction of dichlo-rocarbene to styrene were also investigated.

以表面经偶联剂修饰的γ-Fe2O3为载体,通过聚分别与乙二醇单甲醚和一缩二乙二醇单甲醚的醇钠盐反应,合成了两种磁性梳状聚醚三相相转移催化剂,研究了它们在碘代、二氯卡宾对双键加成和混合醚制备反应中的催化活性。

Application of McAbs: the ascites of McAb A_12B_4 were purified with euglobulin precipitation, and tagged with colloidal golds, then the immuno-gold filtration assay was developed to examine avian influenza virus. The results showed that the positive outcome was gained with avian H_9, H_7 and H_5 influenza virus.

单抗的初步应用:A1284株腹水经优球蛋白沉淀法纯化后与胶体金标记,应用于胶体金试纸条检测试验,金标A1284株单抗与H9、H7、H5三种亚型禽流感病毒反应结果呈阳性。

The developmental process of W. delavayi indicated that the syncarpous and uniloculate gynoecium was in fact bicarpellate, which consisted of a fertile carpel and a sterile one. It was pseudomonomerous.

根据对雌蕊群的发生和发育过程观察,该种的子房是由一个近轴面的可育心皮和一个远轴面的不育心皮融合而成的单室子房,为假单心皮雌蕊。

By this reaction, an aldose is converted into another aldose and the corresponding ketose, and a ketose is converted into the corresponding two aldoses.

单糖的异构化涉及羰基和相邻近的羟基,通过这个反应,一种醛糖转化为另一种醛糖,和相对应的酮糖,一种酮糖转化为相对应的两种醛糖。

In order to reduce calculation error, the frequency distribution of average values is used to compute the mixed distribution's digital features of each component distribution, thereinto, the number of the component distribution is determined by AIC, choose the number that meets the minimum value of AIC as the component number of mixed distribution, and the other parameters are estimated by EM algorithm; Secondly, because each component distribution is corresponding to a kind of major gene genotype, according to the values of the average and variance of the each component distribution, we can use the limit error of the normal distribution to plot each individual into the correspondent component distribution, namely into correspondent major gene genotype. Then we regard each major gene genotype as a treatment level of one-way analysis of variances, and the one-way multivariate analysis of variance is carried out to calculate the covariance matrix of major gene effect, covariance matrix of polygene effect, covariance matrix of environment effect and so on; At last, combining the weights of the each component distribution of mixed distribution, we can calculate the variance of major gene effect, the variance of polygene effect, environmental variance and the genetic gain of the quantitative trait.

为减小计算误差,本研究采用均值的频数分布来计算各成分分布的数字特征,其中成分分布个数根据AIC准则,选择使AIC值达到最小的成分分布个数作为混合分布的成分分布数,分布中其它参数的确定利用EM算法来估计;其次,每个成分分布对应一种主基因基因型,根据各个成分分布的均值和方差,利用正态分布的极限误差将每个个体划分到相应的成分分布中,即相应的主基因基因型中,将每种主基因型作为单因素方差分析的一个处理水平,对其进行单因素的多元方差分析,分别计算主基因效应协方差阵、多基因效应协方差阵、环境协方差阵等参数;最后结合混合分布中各成分分布的权重即各主基因基因型的分离比例,计算主基因效应方差,多基因效应方差和环境方差,以及遗传力等参数,进而计算该数量性状的遗传进展。

A single - masted,fore - and - aft - rigged sailing vessel with two or more headsails and a mast set somewhat farther aft than that of a sloop.

独桅纵帆船一种单桅杆的,有纵帆装置的帆船,具有两个或多个船首斜帆,其单桅杆的位置比单桅帆船的要稍微靠后一点

Black wattle bark extract consists of a series of polyphenolic compounds with a board range of molecular weight distribution and a considerable amount of nontannin components.

黑荆树皮单宁的工业化产品栲胶是一种分子量分布范围较宽,含有一定非单宁成分的多酚化合物。

The content of each different single oil of mixed oils could be calculated using the components concentration and diagnostic ratios of normal alkanes and terpane (m/z 191) biomakers of different single oil.

通过运用单种油样的正构烷烃浓度,萜类(m/z191)生物标志物的浓度以及它们的诊断比值作为参数,计算混合原油中的单种原油含量,其误差在允许的范围之内。

A good balance between the dynamic property and the thermal-oxydative ageing property on the blend vulcanizates were obtained when curing system is SEV and the S/CZ/DM ratio of 1.5/1.5/0.5;There was a good balance among tensile strength and heat build-up and damping property on blend vulcanizes filled with moderate size carbon black;The mechanical properties of vulcanizate filled with N660/N330 and N660/N990 were medium between two carbon black filled individual.

补强填充体系对NR/ENR硫化胶的性能有较大的影响,选择粒径适中的炭黑品种N660作为补强剂,硫化胶在拉伸强度、疲劳生热和减震方面可以获得较好的平衡;N660/N330和N660/N990两种填充体系硫化胶的力学性能,基本上是单用一种炭黑所得硫化胶力学性能的加权平均;N660/白炭黑(40/20)和N660/碳酸钙(45/15)填充体系硫化胶的力学性能与相同用量下N660单用时的相当,而N660/陶土填充体系硫化胶的力学性能较差。

The results show that the study on transimittivity can be done using the points along the circle arc centered at the roadway or the boring core, the transimittivity at the joints along the right angle ray can be studied using one single point behind the joint, and the studies on transimittivity can be done on any reasonable radius value of the roadway or boring core in a typical rock.

分析结果表明:单节理后各节点透射率的研究,可以通过单节理后某一以巷道或钻孔中心为中心的圆弧上各节点的透射率来展开;射线角为90°的射线上节理后各节点透射率的研究,可以通过节理后某一节点的透射率来展开;单节理的透射率的研究可以在一个固定半径值的巷道或钻孔的模型上用一种典型的岩石进行。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。