查询词典 B

The study on the phylogenetic relations among these species is very useful for the study on genome and marker-assisted breeding in Brassica species. The karyotypic analysis is one of the most important methods in analysing the phylogenetic relation of species with closer relations. The protocol for inducing high frequency metaphase was established by pretreatment with low temperature and 8hydroxyquinoline, and then the preparation of chromosome and karyotypes analysis of six economical important Brassica species were carried out. According to the karyotypic analysis, it was shown that in the genomes of amphidiploid species, there are genomical components from didiploid species. Our result showed that B. campetris, B. juncea and B. napus belonged to class 2B, while B.

以二倍体B.nigra（B，n=8）基因组为探针，用B.campestris（A，n=10）或B.oleracea（C，n=9）的基因组进行封阻，分别与B.juncea（AB，n=18）和B.carinata（BC，n=17）进行GISH杂交发现，B.juncea和B.carinata基因组中仅有来自于B.nigra的8对染色体表现杂交信号，而其它染色体杂交信号较弱；以B.campestris或B.oleracea基因组为杂交探针与B.napus（AC，n=19）进行GISH杂交发现，所有19对染色体均出现杂交信号，根据杂交结果难以正确判断B.napus基因组中的哪些染色体是来自于A基因组，哪些是来自于C基因组；以rRNA基因（18S-5.8S-26S）为探针的FISH杂交结果表明，B.campestris基因组中rRNA基因位点为6对；B.oleracea为3对；B.nigra为2对；B.carinata为4对；B.juncea为6对；B.napus为6对。

Though comparing Canny operator and center B spline dyadic wavelet, the following conclusion is proven in this dissertation: a Center B spline function has tight support and Canny operator hasn't. b Center B spline function asymptotic convergence to Gaussian function and the derivative of Center B spline function asymptotic convergence to Canny operator. c The derivative of fourth order center spline B function is more suitable as a optimal edge detector than Canny operator. d Center B spline function can balance the smoothing and approximation of original data, and the fourth center B spline function is the only optimal solution of two order smoothing problem. e The error between the valve of time-frequency uncertainty of the fourth center B spline function and the lower bound of time-frequency uncertainty does not exceed 0.143% of the lower bound. f The derivative of center spline B function can construct a stability dyadic wavelet and can give a fast algorithm for multiscale edge detection, but Canny operator can do neither.

作者给出了Canny算子与中心B样条二进小波严格的比较证明，得出如下结论：a中心B样条函数具有紧支集，Canny算子不具有紧支集。b中心B样条函数的极限收敛于高斯函数，中心B样条函数的导数收敛于Canny算子。c四阶中心B样条函数的导数比Canny算子更接近最佳边缘检测滤波器。d中心B样条函数比高斯函数更能兼顾对原函数平滑和逼近的折中要求，并且四阶中心B样条函数是二阶逼近问题的唯一最优解。e四阶中心B样条函数的时频测不准关系值与时频测不准关系下界的逼近误差不超过0.143％。f中心B样条函数的导数可以构成稳定的二进小波，存在快速的多尺度算法；而Canny算子不构成稳定的二进小波，无法给出快速的多尺度算法。

In 110 Xinjiang unrelated healthy Uygur subjects, 27 alleles were detected in HLA-B loci. Of them, B * 35 and B * 51 were the most common alleles with an allele frequency of 0.1136 and 0.1136, respectively; while B * 41, B * 56 and B * 78 were the rare alleles with a frequency of 0.0045, 0.0045 and 0.0091, respectively. Frequencies of "Caucasoid origin" HLA alleles such as B * 08, B * 35 and B * 50 in Xinjiang Uygurs were higher than other ethnic groups in China.

在维吾尔族样品中共检出27个等位基因，其中高频率的等位基因为B*35(0.1136)和B*51(0.1136)，低频率的等位基因为B*41(0.0045)、B*56(0.0045)和B*78(0.0091)，B*08、B*35、B*50等"高加索人"起源的HLA基因在新疆维吾尔族的分布频率高于国内其他民族，与高加索人种的数值相当。

Bacterial strains were isolated from humus mud by employing the dilution methods. Seven cellulose-degradation Strains marked as B-37, B-35,B-31, B-25, B-17, Z-a, and Z-b were selected according to the hyaloid rings on the medium of carboxymethylcellulose sodium Congo red and their efficacy of decomposing filter paper. Z-b had the strongest ability in decomposing filter paper among the seven strains and 16S rDNA analyzed indecated that it was Stenotroplaomnonas maltophilia owning to 99.8% homology. Comparing clony size of the seven strains in media with different carbohydrates and inorganic salt, we found that the potato extract and inorganic salt which contained CaCl2 0.20, MgSO4 1.25, NaCl5.00,(NH4) SO4 1.30, KH2 PO4 1.35, FeSO47H2O 0.015, Na-EDTA 0.02 were suitable for the bacteria growth.

用稀释法从腐殖泥中分离菌株，根据它们在梭甲基纤维素钠-刚果红培养基上的透明圈直径及对滤纸的崩解能力，获得7株纤维素分解细菌（编号：B-37、B-35、B-31、B-25、B-17、Z-a和Z-b），其中菌株Z-b的纤维素崩解能力最强，分子鉴定结果表明它与Stenotrophomonas maltophilia的16S rDNA序列有99.8%的同源性，初步确定为嗜麦芽窄食单胞菌。

Attributed to the lubricant-effect of flexible LCPB,cold crystallization was observed in stereoblock PB.Bd-Ip block copolymersHTPB-b-PI,C-(PI-b-HTPBn,C-n,and PI-b-HTPB -b-PI and Bd-St block copolymersHTPB-b-PS,C-(PS-b-HTPBn,C-n, and PS-b-HTPB-b-PS containing crystallizable HTPB were well synthesized,the microstructures and properties of the copolymers were investigated in detail.

通过与异戊二烯或者苯乙烯共聚，合成了含高反式聚丁二烯的丁二烯-异戊二烯嵌段共聚物包括HTPB-b-PI，C-(PI-b-HTPBn，C-n和PI-b-HTPB-b-PI和丁二烯-苯乙烯嵌段共聚物包括HTPB-b-PS，C-(PS-b-HTPBn，C-n和PS-b-HTPB-b-PS，对嵌段共聚物的结构和性能进行了系统的研究。

Attributed to the lubricant-effect of flexible LCPB,cold crystallization was observed in stereoblock PB.Bd-Ip block copolymersHTPB-b-PI,C-(PI-b-HTPBn,C-n,and PI-b-HTPB -b-PI and Bd-St block copolymersHTPB-b-PS,C-(PS-b-HTPBn,C-n, and PS-b-HTPB-b-PS containing crystallizable HTPB were well synthesized,the microstructures and properties of the copolymers were investigated in detail.

加热器通过与异戊二烯或者苯乙烯共聚，合成了含高反式聚丁二烯的丁二烯-异戊二烯嵌段共聚物包括HTPB-b-PI，C-(PI-b-HTPBn，C-n和PI-b-HTPB-b-PI和丁二烯-苯乙烯嵌段共聚物包括HTPB-b-PS，C-(PS-b-HTPBn，C-n和PS-b-HTPB-b-PS，对嵌段共聚物的结构和性能进行了系统的研究。

The results suggested that compared with A-starch and maize starch, there are more quantities of impurities, such as protein, lipid and pentosan, in B-starch. B-starch prepared in the laboratory almost has the same compositions as three samplings, and accords with the reports of some documents too. Differing from the granules in A-starch, those in B-starch are smaller sized (1-10m)and oval shaped, and felted each other. The crystallogram of A- and B-starch are similar, i.e. A type. There is difference in granular distribution between A- and B-starch. The granular distribution of B-starch is anomalous and extensive (l~1259m).B-starch has bigger dilatancy and retrogradation, and smaller blue value, solubility, viscosity, gelatinization temperature and gelatinization enthalpy.

试验结果表明：跟玉米淀粉、A淀粉相比较，B淀粉含有的蛋白质、脂肪和戊聚糖等杂质数量多；实验室制备的小麦B淀粉中淀粉、粗蛋白、戊聚糖等含量均与文献的报道接近，也与在工厂采样的B淀粉相近；与A淀粉不同，B淀粉以小颗粒的淀粉为主，平均粒径1～10μm，颗粒形状呈椭圆形，同时颗粒和颗粒之间黏结紧密；B淀粉和A淀粉晶形结构相似，都为A型；B淀粉的粒度分布情况不同于A淀粉，其粒度分布规律性不强，分布范围也较宽，粒度在1～1259μm之间；B淀粉的凝沉值和膨润力大于A淀粉，而沉降体积、蓝值、溶解度、粘度、糊透光度、相变温度和热焓均小于A淀粉；杂质的含量对B淀粉性质的影响是明显的，随着杂质含量的增加，沉降体积、溶解度和透光度减小，膨润力增大，但是它们对凝沉值、蓝值和粘度的影响比较复杂。

CD8~+ cell is the main T lymphocyte subset in spleen, and B lymphocyte mainly is IgG~+ cell, moreover the amount of these B lymphocytes could exceed CD3~+ T lymphocyte subset after 7 days. CD8~+ cell is the main T lymphocyte subset in tonsil of appendix, and B lymphocyte is IgM~+ cell, and the amount could exceed CD3~+ T lymphocytes after 35 days. After 21 days, B lymphocytes in esophago tonsil are the main IgA~+ cells and the amount exceeds CD3~+ lymphocytes. The amount of CD4~+ lymphocytes is more than CD8+ lymphocytes.4. CD3~+、CD4~+ and CD8~+ T lymphocytes in spleen mainly distribute in periarterial lymphoid sheath. However IgM~+、IgG~+ and IgA~+ cells mainly distribute in ellipsoid periarterial lymphoid sheath and germinal center. T lymphocytes in appendix tonsil mainly distribute in middle and inferior part of mucous and the B lymphocytes mainly in middle and mucous between 4~7 days. Whereafter T, B lymphocytes equably distribute in mucous. CD4~+ cells arrange tightly and mainly occupy the central part in aggregates of T lymphocytes in esophago tonsil and CD8~+ lymphocytes mainly distribute in periphery. Meanwhile B lymphocytes encircle the periphery of aggregates of T lymphocytes. The aggregates of B lymphocytes is mainly the germinal center with lots of IgM~+、IgG~+ and IgA~+ cells. Meanwihle T lymphocytes encircle the periphery of aggregates of B lymphocytes.5. There is an intimate relationship between the development of tissue structure of peripheral immune organs and lymphcytopoiesis. The maturation of tissue structure is stimulated by the immigration of lymphocytes and the mature tissue structure provides place where lymphocytes grow mature and functionate.

脾脏在21日龄时达到稳定，食管扁桃体和盲肠扁桃体均在35日龄时达到稳定；脾脏中T淋巴细胞亚群以CD8~+细胞为主，B淋巴细胞则以IgG~+细胞为主，并在7日龄后数量超过CD3~+T淋巴细胞；盲肠扁桃体中T淋巴细胞亚群以CD8~+细胞为主，B淋巴细胞以IgM~+细胞为主，并在35日龄后数量超过CD3~+T淋巴细胞；21日龄后，食管扁桃体中B淋巴细胞以IgA~+细胞为主，数量超过CD3~+细胞，CD4~+细胞的数量多于CD8~+细胞。4、在T、B淋巴细胞组织定位方面，脾脏中CD3~+、CD4~+和CD8~+T淋巴细胞主要分布在动脉周围淋巴鞘中，而IgM~+、IgG~+和IgA~+细胞主要分布在椭球周围淋巴鞘和生发中心中；4～7日龄时，盲肠扁桃体中T淋巴细胞主要分布在粘膜固有层的中下部区域，而B淋巴细胞则主要分布在中上部区域，随后各日龄T、B淋巴细胞均匀地分布在粘膜固有层中；在食管扁桃体的T淋巴细胞聚集物中，CD4~+细胞紧密排列，主要占据中央部位，CD8~+细胞主要散布在外周，同时B淋巴细胞又环绕在整个T淋巴细胞聚集物的外周；B淋巴细胞聚集物主要为生发中心，其中存在大量IgM~+、IgG~+和IgA~+细胞，同时T淋巴细胞又环绕在整个B淋巴细胞聚集物的外周。5、外周免疫器官的组织结构发育和淋巴细胞发生之间存在密切的关系，淋巴细胞迁入淋巴器官刺激组织结构的发育成熟，同时成熟的组织结构又为淋巴细胞发育成熟并行使功能活动提供场所。

The bioassay indicated that some of them possess certain fungicidal activity against Botrytis cinerea, Gibberlla zeae, Rhizoctonia solani, Venturia nashicola at a dose of 50 μg/mL. The EC50 value of title compounds B-8、B-9、B-10、B-12 was reached 1.0, 0.2, 1.2 and 0.4 μg/mL against B. cinerea, the effect was approximated or better than pyrimethail and EC50 value of title compounds B-8, B-10, B-11 was reached 0.07, 0.2 and 0.05 μg/mL against G. zeae, the effect was better than carbendazim.

在50μg/mL浓度时，该系列化合物对番茄灰霉病菌Botrytis cinerea、小麦赤霉病菌Gibberlla zeae、水稻纹枯病菌Rhizoctoniasolani、梨黑星病菌Venturia nashicola菌丝生长均具有很好的抑制活性，其中化合物B-8、B-9、B-10、B-12对番茄灰霉病菌的EC50值分别为1.0、0.2、1.2、0.4μg/mL，接近或优于对照药剂嘧霉胺，B-8、B-10、B-11对小麦赤霉病菌的EC50值分别为0.07、0.2、0.05μg/mL，优于对照药剂多菌灵。

The contributions ofΨp from the pion and the kaon meson, the contribution ofΨB from B meson are not very small, and can not be safely neglected for giving more resonable results of form factors.The B meson wavefunction is a major source of uncertainty in the study of B meson decays. The B→πand B→K transition form factors provide a good platform to determine the possible regions for the two typical phenomenological parametersΛandδ.

但π、K介子波函数中的Ψp和B介子波函数中的ΨB对形状因子的贡献比较大，为了获得更加合理的形状因子的结果，一般不能忽略π、K介子波函数中的Ψp和B介子波函数中的ΨB项的贡献。B介子波函数是B介子衰变中不确定性的一个主要的来源。B→π和B→K跃迁形状因子为确定两个典型的唯象参数Λ和δ提供了一个很好的平台。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。