下界的

By the means of combinatorial matrix, the relation between minimum degree of connected graph and upper bound of spectral radius was carefully depicted.

利用组合矩阵方法，精细地刻画出连通图的最小度与谱半径的上界之间的关系，在一定条件下改进了以前的一个结果。

Thirdly, under the condition with noαpriori smoothness, in order to obtain the optimal convergence rates, it is not practical to use theαpriori rule. And it is necessary to use the a posteriori stopping rule which not only depends on the error boundδbut also on the perturbed data y~δ.

再次，在没有先验的光滑性信息情况下，为了获得最优收敛速率，利用先验选取准则则变得不再实用，而利用不仅依赖于误差界δ而且依赖于扰动数据y~δ的后验停止准则是必要的。

In this paper, the relations between the uniform topology, weak operator topology and strong operator topology in operator space of Hilbert space and the continuity of several operations are discussed.

讨论了Hilbert空间上全体有界线性算子所成的算子空间上一致拓扑，弱算子拓扑，强算子拓扑之间的关系，以及一些运算在这些拓扑下的连续性。

Based on the surjection of maximal monotone operators, we prove that some semilinear heat equations with weak Lipschitz nonlinear terms are exactly controllable by L〓 0, T: H〓(Ω control; Based on the critical point theorem of coercive convex functionals, we prove that some parabolic equations with Lipschitz nonlinear terms are globally approximately controllable and finite-dimensional exactly controllable by controls acting on mobile supports, and finally, we extend the results to parabolic equations in R〓.

首先利用极大单调算子的满射原理证明了半线性热方程在较弱Lipschitz条件下可通过L〓0.T；H〓(Ω控制实现精确能控。然后通过构造强制凸泛函并利用其临界点理论证明了带Lipschitz非线性项的抛物型方程可通过作用在在移动支集上的控制来实现整体近似能控与有限维精确能控，最后将整体近似能控与有限维精确能控结论推广到无界区域R〓上。

The existence of solutions for two-point boundary value problem subject to nonlinear second order differential equation with mixed boundary conditions is studied by using topological transversality theorem, and some known results are improved.

现利用拓扑横截定理，考虑了二阶常微分方程两点边值问题在组合边界条件下的解的存在性，对二阶常微分方程两点边值问题所对应的辅助问题作先验界估计，并利用拓扑横截定理，得到了边值问题解的存在性，推广了一些已有结果。

The multivariable systems with unmodelled dynamics can still obtain better control results under the action of stronger bounded unmeasurable disturbances.

对于存在未建模动态的多变量系统，在较强的有界不可测干扰的作用下仍可得到较好的控制结果。

Be born in Hong Kong, outside Yu Hai of attend school of one's early years, job big company, smile is like sunshine forever kind bright, there is no lack of on Gu Yongqiang body " horse " advantageous temperament, but hit in domestic Internet group for years go all out, poineering experience, below the appearance that makes him gentle, more under cover of a kind of dash, reason, consolidate step by step " aardwolf " spirit.

在香港出生，早年求学、工作于海外大公司，笑容永远如阳光般灿烂，古永锵身上不乏&马&的优越气质，但多年在国内互联网界打拼、创业的经历，使得他温和的外表下，更隐藏着一种锐气、理性、步步为营的&土狼&精神。

Recently, a nearly E-W-striking, over 10 km long albitite zone has been recognized for the first time in the Lower Silurian Meiziya Formation in a Lower Paleozoic lead-zinc ore deposit concentration area of the Xunyang basin, South Qinling. It shows a conformable contact and gradational relationships with the country rocks and has thick-bedded and massive, banded, brecciated structures and fine and very fine equigranular and intraclastic textures. It is chemically characterized by enrichment in SiO2, Al2O3 and Na2O and is rich in the trace elements Fe and Mn and poor in the trace elements Co, Ni and Cu. Its ∑REE, LREE and HREE are lower than those of the country rocks and exhibit pronounced Eu depletion.

最近，在南秦岭旬阳盆地下古生界铅锌矿集区内的志留系梅子垭组地层中首次识别出一条近东西方向延伸长达10余千米的钠长石沉积岩带，与地层整合产出，渐变过渡，厚层块状，条带状，角砾状构造，均粒微-细晶结构，内碎屑结构；其化学成分以富含SiO2，Al2O3及Na2O为特征，富Fe，Mn，贫Co，Ni，Cu等微量元素；该钠长石岩的∑REE，LREE，HREE均较围岩偏低，具明显Eu亏损的特征。

Application to the Eopalaeozoic buried hill in the Z oilfield shows that the two types of azimuthal attributes, attenuation gradient and frequency at 85% energy ratio, are closely related to fracture characteristics of carbonate reservoir.

对Z区下古生界潜山碳酸岩储层进行的裂缝预测表明，由衰减梯度和85%能量比频率两种属性导出的裂缝发育密度具有很好的相关性，且与实际情况符合。

Bounding in eastern Fenghuang, similar to Te, the crustal thickness can also be divided into two sections: northwest high value section and southeast low value section, and there is roughly a positive correlation between crustal thickness and effective elastic thickness of the lithosphere, namely higher crustal thickness value corresponding to relatively higher Te value and lowerer crustal thickness value to relatively lower Te value, which reflects that the lithospheric strength is directly proportional to the crustal thickness in regional tectonic background.

以凤凰东为界，与Te值类似，地壳厚度也可以宏观分为南东低值段与北西高值段，地壳厚度大体上与Te值呈正相关关系，相应较大地壳厚度对应较高的Te值，较小地壳厚度对应较低的Te值，说明在大的区域构造背景下，岩石圈强度与地壳厚度成正比。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。