查询词典 M-roof

In this paper we define the concept of Projective Blaschke manifolds and extend the theory of equiaffine differential geometry to the projective Blaschke manifolds. We prved that if M be a complete projective Blaschke n-sphere and its universal covering manifold is isometric to a complete (n+1) dimensional parabolic, elliptic or hyperbolic affine hypersphere, then M is a quotient space of E^n, S^n or D^n by a isometric subgroup of its corresponding spaces.

在这篇文章中我们定义了射影Blaschke流形的概念，将等仿射微分几何的理论推广到了射影Blaschke流形，并证明：如果n维完备射影Blaschke 超球面 M 的通用覆盖流形分别是完备的抛物型、椭圆型或双曲型仿射球，则M分别是n维欧氏空间、n维超球面或n维单位圆盘关于各自空间的一个等距离散子群的商，从而对完备射影Blaschke 超球面进行了分类。

Recombinant ptotein made up 39.2%(pET-20b-bglA) and 33.5%(pET-28a-bglA) of the total proteins in the intracellular fraction, the solubility proportion of the enzyme up to 32.8%(pET-20b-bglA) and 40.1%(pET-28a-bglA), the activities of the enzyme were 66.8 (pET-20b-bglA) and 71.2 U/mg (pET-28a-bglA). These results showed that E. coli BL21-CodonPlus (DE3)-RIL with argU tRNA, ileY tRNA and leuW tRNA genes helped to improve expression of the enzyme through enhanced identification of the rare codons AGA/AGG, AUA and CUA. Further optimized the conditions for inducing, the solubility proportion of the enzyme was 70.6% at 16 °C and 1.2 times higher than 37 °C. The solubility proportion of the enzyme increased from 12.3% to 32.8% when IPTG concentrations dropped from 1000 μM to 25 μM. The recombinant enzyme was purified by heat treatment, DEAE Sepharose anion-exchange chromatography and TOYOPEARL HW-55F.

maritima MSB8 的-葡萄糖苷酶基因 bglA克隆至表达载体 pET-20b 和 pET-28a，构建重组质粒 pET-20b-bglA 和 pET-28a-bglA，然后转化不同大肠杆菌 E.coli 宿主，Tm-SIGlA 在 E.coli BL21-CodonPlus(DE3)-RIL 中获得高效表达，重组蛋白的表达量为 33.5%(pET-28a-bglA)和 39.2%(pET-20b-bglA)，可溶性比例为 32.8%(pET-20b-bglA)和 40.1%(pET-28a-bglA)，比酶活达 66.8 (pET-20b-bglA)和 71.2 U/mg (pET-28a-bglA)，这些结果表明，E.coli BL21-CodonPlus(DE3)-RIL 宿主带有的 argU tRNA、ileY tRNA 和 leuW tRNA 基因，分别增强对稀有密码子 AGA/AGG、AUA 和 CUA 的识别，有助于提高该酶在 E.coli 中的表达；进一步优化诱导条件，重组 E.coli BL21-CodonPlus(DE3)-RIL/pET-20b-bglA 在 37 ℃下诱导培养，IPTG 浓度由 1000 μM 降至 25 μM，目的蛋白可溶性表达由 12.3%增至 32.8%，提高 1.7 倍，16 ℃下低温诱导实现目的蛋白 70.6%的可溶性表达，较 37 ℃下诱导培养提高 1.2 倍。

Microcells were produced by centrifugation of micronucleated A9 (neo12) cells in Percoll density gradient containing 20 mg/L Cytochalasin B at 39 000 g. The resulting mixture of microcells, whole cells, karyoplasts and cytoplast fragments was filtered through 8 μm and 5 μm size membrane pores sequentially to obtain pure preparation of microcells.

微核化的细胞在含有20 mg/L细胞松弛B的Percoll密度梯度介质中，经39 000g高速离心后，包含微细胞、完整细胞、细胞核和细胞碎片的混合液，依次通过8 μm和5μm孔径的滤膜过滤后可获得纯化的微细胞溶液。

The deflection of plate is trigonometric series as follows:∞∞ mπx nπy w=∑∑ A m =1 n =1 mn sin a sin b It is obvious, every term of this series is satisfied with the boundary conditions of quadrilateral simply supported.

取板的挠度为如下重三角级数∞∞ mπx nπy w=∑∑ A m =1 n =1 mn sin a sin b 显然，该级数的每一项都满足四边简支的边界条件。

In this paper we present an estimate for bounds of module of eigenvalues of the iteration matrix M^(-1)N for a kind of Baily-Crabtree diagonally dominant matrix M.

该文对一类Baily-Crabtree型对角占优矩阵M，给出了迭代矩阵M^(-1)N的特征值模的上下界估计。

Then, under a certain condition, the estimate for bounds of the module of eigenvalues of M^(-1)N is presented when M is a α- strictly diagonally dominant matrix.

并以此为基础，在一定条件下给出了当M是α-严格对角占优矩阵时的M^(-1)N的特征值模的上下界估计。

Particularly, for some generalized diagonally dominant matrix M, upper bounds of the spectral radius of the iterative matrix M~(-1)Nare presented.

对矩阵M-为几类广义对角占优矩阵的情形，给出了迭代矩阵M~(-1)N谱半径的上界估计式。

In this paper,the estimates of upper bounds for the spectral radius of the iterative matrix M~(-1)N for some generalized diagonally dominant matrix M are presented.

对几类广义对角占优矩阵M，给出了迭代矩阵M~(-1)N谱半径的上界估计式，所得结果较已有结果适用于更加广泛的矩阵类。

For comparison, damage radius for microsurgical scissors was 50 μm, and for diathermy, 400 to 850 μm.

与之相对比的是，微手术剪产生的破环半径是50 μm，透热疗法则是400 to 850 μm。

I'm only just beginning To see the real you And sometimes when we touch The honesty's too much And I have to close my eyes and hide I wanna hold you 'til I die 'Til we both break down and cry I wanna hold you 'til the fear in me subsides Romance and all its strategy Leaves me battling with my pride But, through the insecurity Some tenderness survives I'm just another writer Still trapped within my truths A hesitant prizefighter Still trapped within my youth At times, I'd like to break you And drive you to your knees At times, I'd like to break through And hold you endlessly At times, I understand you And I know how hard you've tried I've watched while love commands you And I've watched love pass you by At times, I think we're drifters Still searching for a friend A brother or a sister But then the passion flares again

I'm 唯一正义起点看见真正您并且有时当我们接触 honesty's 太多并且我必须闭上我的眼睛和掩藏我想要拿着您我死的'til 我们划分和哭泣的'Til 我想要拿着您恐惧在我消退的'til Romance 和所有它的战略留下我作战充满我的自豪感但，通过不可靠一些柔软生存 I'm 其它作家仍然设陷井在我的真相之内一名犹豫的职业拳击手仍然设陷井在我的青年时期之内时常， I'd 喜欢打破您并且驾驶您到您的膝盖时常， I'd 喜欢打破并且不尽地拿着您时常，我明白您并且我知道怎么坚硬you've 尝试了 I've 观看了当爱命令您并且I've 观看了爱通行证您时常，我认为we're 漂流物仍然寻找朋友兄弟或姐妹但另一方面激情再飘动

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。