查询词典 B-complex

They are presented in need of special curves and surfaces in engineering applications. In order to prove that the uniform C-B-spline basis is normalized totally positive, we compute the matrix which transforms the C-Bézier basis into the uniform C-B-spline and decompose this matrix into a product of. bidiagonal and stochastic factors.

本文用递推的方法，计算出代数三角空间中的n次C-Bézier基与n次均匀C-B-spline基之间的转换矩阵，并把该矩阵分解为一系列二对角阵的乘积，从而证明出n次均匀C-B-spline基是一个标准全正基，进一步用插入节点的方法，把它扩充为一组标准B基，从而我们可以利用B基的很多优良性质，在工程应用中对这两组基进行开发利用。

Abstract］ AIM:To investigate the role of nuclear factor κB in the induction of iNOS gene by TNFα and LPS in endothelial cells and the effect of antioxidant on the induction of iNOS. METHODS:Nitrite was determined based on Griess reaction. iNOS mRNA was analyzed using Northern blot. NFκB in the cell nucleole was detected with electrophoretic mobility shift assay.RESULTS:(1)NO production and iNOS mRNA expression induced by LPS and TNFα was blocked by pyrrolidine dithiocarbamate or N-acetylcysteine.

研究表明内皮细胞激活时iNOS表达的调控主要发生在转录水平。iNOS基因的启动子区域含有多个转录因子的结合位点包括NFκB、AP-1、NF-IL6，Oct-1等［2］，而核因子κB(nuclear factor κB， NFκB)被认为在多种参与炎症反应的蛋白质因子的基因调控中担任重要角色，因而可能是内皮细胞激活的调控中一个重要转录激活因子［2，3］。

2Cm bone defect was established in ulna of rabbits, the capacity of different therapeutic measures in bone defect repairment was determined in groups A , B (implanted BMP, TGF -β〓 and carrier) and C . It was found that the appearance of osteoblasts and formation of bone union were earlier and the number of osteoblasts more in group B than in group A. The amino acid analysis revealed that the volume of ossein was significantly higher in group B than in group A at the early stage.

分别用bBMP及载体bBMP、TGF-〓及载体和单纯载体修复兔尺骨1.2cm骨缺损的实验模型来比较三者间的成骨效果，结果表明B组比A组成骨细胞出现早、形成数量多、骨连接形成提前，骨胶原氨基酸分析在骨缺损修复早期胶原形成量B组均高于A组，且B组以形成Ⅰ型胶原为主，C组表现为一纤维形成过程。

GiST indexing is an advanced system which brings together a wide array of different sorting and searching algorithms including B-tree, B+-tree, R-tree, partial sum trees, ranked B+-trees and many others.

胃肠道间质瘤索引是一种先进的系统，汇集了各种各样的不同的分类和搜索算法，其中包括B -树， B +树， R -树，部分和树木，排名的B +树和许多其他问题。

A measure of the effect of the medium on the magnetic field B when subject to a magnetizing force H: B = 0 in SI system, B = H + 4πI in cgs system, where 0 is the permeability of free space.

是介质在磁场 B 中所受磁化力为 H 时产生的效应：在国际单位制中 B = 0 在厘米-克-秒制中 B = H + 4πI 其中 0 为自由空间磁导率。

RESULTS: Both resting B cells and T cells did not express PD-L1 on their surface, however PD-L1 expression was significantly up-regulated on the surface of the activated B cells after 6 h stimulation with LPS or pokeweed mitogen, and the percentages of B cells that expressed PD-L1 reached a plateau at 24 h, which were (46.26±10.71)% with LPS and (43.67±6.14)% with PWM stimulation, respectively. No markedly change of PD-L1 expression on the surface of the activated T cells after stimulation with LPS was observed, but upregulation of PD-L1 expression was observed when stimulation with PWM.

结果： 静息B细胞和T细胞表面不表达PD-L1，LPS和PWM刺激6 h后表达PD-L1的B细胞百分率均显著高于静息B细胞，24 h达到最高，分别为(46.26±10.71)%和(43.67±6.14)%，之后随时间延长而降低；表达PD-L1的T细胞百分率在LPS刺激下无显著变化，但PWM刺激6 h后百分率明显高于静息条件，24 h达到最高，为(25.42±9.23)%，之后下降。

Results Among 1 083 patients, polyneuritis, acute myelitis, periodic paralysis men with A blood type; trigminal neuralgia, Guillian-Barre syndrome were more of ten in men with B blood type;virus meningitis, women with sclerosis, epilepsy, myasthenia gravis,were more of ten in women with O blood type. The A, B, O blood type component proportions of the diseases mentioned above and those of the normal people have statistic differences. This presents that people with A, B, or O blood type are easy to catch those diseases.

结果 1 083例患者中，多发性神经炎、急性脊髓炎、周期性瘫痪3种疾病男性A型血居多；三叉神经痛、格林巴利综合征两种疾病男性B型血居多；病毒性脑炎的男性、多发性硬化的女性、癫痫和重症肌无力的女性O型血居多，其A、B、O 血型构成比与正常人比较差异有统计学意义(P 。05、。01)，提示A、B、O血型的人易患上述疾病。

US altogether has produced 12,,677 B-17, to August, 1944, the United States Army navigation air force at least had 33 B-17 bombardment group to deploy at the overseas operation. 1943rd, during 44, 45 years in USAAF in the scale huge daytime precision bombing combat which the German sky carries on, B-17 but the reputation greatly inspires as a result of the outstanding tenacious performance.

美国一共生产了 12，677 架 B-17，到 1944 年 8 月，美国陆军航空军至少已有 33 个 B-17 轰炸机大队部署在海外作战。1943、44、45 年间在 USAAF 在德国上空进行的规模庞大的白天精密轰炸作战中，B-17 由于优异顽强的表现而声名大振。

There are variety of B vitamins in wheat grain, such as thiamine, riboflavin and pyridoxine. The objective of this study was to understand the content of B vitamins (thiamine, riboflavin and pyridoxine) in colored grain wheat, and their Patterns of variation, and provide a theoretical basis for optimization of B vitamins content in wheat breeding.

小麦籽粒含有多种B族维生素，本研究通过测定24个不同粒色的小麦品种中维生素B1、维生素B2、维生素B6及籽粒色素含量，并研究不同颜色的小麦籽粒中B族维生素含量与小麦籽粒颜色的关系及其变异规律，为B族维生素的利用及小麦品质育种提供依据。

Methods Mouse macrophages were stimulated with Mpe LAMPs to analyze the activitation of NF-κB, and the effect of pyrrolidine dithiocarbamate, an inhibitor of NF-κB, on NF-κB activation was also studied by indirect immunofluorescence and western blot.

用从穿透支原体中提取的脂质相关膜蛋白刺激小鼠巨噬细胞，经Western blot和间接免疫荧光等方法检测NF-κB是否被激活，以及NF-κB抑制剂PDTC对NF-κB活性的影响。

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。