查询词典 D.A.

The structure analysis indicates that the reverse symmetry ligand H4LB molecules are linked into a 2D supermolecular network by two types of hydrogen bonds. One type occurs between the oxalamide oxygen group and the phenol hydroxyl qroup of the nearest molecule with d=2.906(2) and ∠O-H…O=151.8°. The other type is between the oxalamide nitrogen group and the oxalamide oxygen group of anther molecule with d=2.849(2),∠N-H…O=158.7°.

晶体结构研究表明配体H4L为顺式桥联分子，晶体中存在两种氢键，一种是草酰胺基团的O原子与苯环上的酚羟基形成O-H…O氢键[d=2.906(2)，∠O-H…O=151.8°]；另一种是草酰胺基团的氨基与相邻草酰胺基上的O原子形成N-H…O氢键[d=2.849(2)，∠N-H…O=158.7°]，通过上述两种氢键将化合物H4LB连接成二维网络结构。

Histopathological observation: 4 weeks after operation, diffuse presence of empty lacunae and pyknotic nuclei of osteocytes were found in the trabeculae, and few newborn micrangium could been seen in group A; lots of empty lacunae and a small quantity of newborn micrangium could been found in group B; and large amounts of osteoblats and newborn micrangium were found around the necrosis regions in groups C and D.

组织病理学观察，术后4周A组见空骨陷窝，无新生毛细血管；B组空骨陷窝较多，有少量新生毛细血管：C、D组空骨陷窝减少，坏死区有大量增生活跃的成骨细胞及新生毛细血管。D组空骨陷窝阳性数及微血管密度分别为19.30 1.52和7.08 1.09，与其他组比较差异有统计学意义（P〈0.05）。

Methods: 47 patients with first bladder carcinoma after operation were divided two groups: the A group ( 23 cases) and B group (24 cases), and 52 patients with recrudescent bladder carcinoma after operation were divided two groups: the C group ( 26cases) and D group (26 cases), the patients in gro...

将47例初发性膀胱癌术后患者分为A(23例)和B(24例)二组，同时将52例复发性膀胱癌术后患者分为C(26例)和D(26例)二组。A、C组在术后6h内表阿霉素80mg/次单次灌注；B、D组在术后1周内表阿霉素50mg/次膀胱灌注，每周1次，共4次，后每月1次，共1年。

This paper discusses a discrete stochastic Lotka-Volterra competition systemwhere ε_1,κ are i.i.d N(O,1),ε_2,κ are i.i.d N(0,1), p is is revelant coefficient of ε_1,κ and ε_2,κ. Maximum Likelihood Estimation of parameters and asymptotic characteristic of the system are studied.

本论文主要讨论离散随机Lotka-Volterra竞争系统其中ε_1，κ是i.i.d N(0，1，ε_2，κ也是i.i.d N(0，1)，ρ是ε_1，κ与ε_2，κ的相关系数参数的极大似然估计及估计模拟和系统的渐近性。

To date, there have been a few clinical trials exploring the efficacy of NMDA enhancers as adjuvant therapy. For instance, D-serine (an endogenous agonist of the NMDA-glycine site) and sarcosine (N-methylglycine, an endogenous glycine transporter I inhibitor) are not only well-tolerated but also synergistic in improving positive, negative symptoms and cognitive function in chronic patients receiving typical or atypical antipsychotics. We just completed the first trial applying NMDA enhancers in acutely exacerbated schizophrenia patients with collaboration with Harvard University, and the results showed that sarcosine was superior to D-serine in efficacy.

目前已有将NMDA促进剂作为辅助用药的临床研究，例如，D-serine (一种内生性NMDA-glycine site致效剂)、sarcosine (即N-methylglycine，一种内生性glycine transporter I 抑制剂)等，结果显示它们不但安全，且能加强传统及新一代抗精神病剂对慢性患者活性、负性症状及认知功能的疗效；我们日前与哈佛大学合作完成目前唯一将NMDA促进剂用於急性患者的研究，结果发现，sarcosine的疗效又优於D-serine。

A concise method of evaluating unitedly the transition temperature of the d-dimensional Ising model (d=1,2,3) has been presented.

作者提出了一种统一计算d 维伊辛模型(d =1，2 ，3)中相变温度的方法。

The effect of cruciform structure on the two photon absorption action cross-section of fluorescence chromophore was reported. 1,4-Di(9'-ethyl-carbazolyl)-3'-vinylbenzene (R1) is a classic two photon absorption chromophore with D-π-D structure.

报道了十字形结构对荧光生色团的双光子吸收作用横截面积的影响。1，4-二（9'-乙基咔唑基）－3'-乙烯基苯(R1)是经典的具有D-π-D结构的TPA生色团。

Results: Wallerian degeneration was observed in the proximal and distal ends of all grafts of nerves harvested at 2 weeks post-engraftment; infiltration of T lymphocytes at the grafts in group B was significant, less T lymphocytes were seen in group C, D and E, while no T lymphocytes were seen in group A and F.

结果：术后2周，所有移植段近端，移植远端神经均有不同程度Wallerian变性，B组移植段见明显T淋巴细胞浸润，C，D，E组次之，A组及F组未见T淋巴细胞。B组以大量成纤维细胞增生为主，A，F组以SC增生为主，C，D，E组介于两者之间。

Milk is one of the few food sources in the American diet of vitamin D, which is fast emerging as a "super nutrient." Other major sources of vitamin D are exposure of the skin to ultraviolet rays of sunlight, and the fattier varieties of fish.

牛奶是当今世界为数不多的食物来源，在美国国会的维生素d ，这是快速发展的新兴作为一个&超级营养&，其他主要收益来源的维生素d暴露的皮肤上，以紫外线的阳光，和fattier品种的鱼。

This thesis consists of three chapters .In chapter one , the distributions of the last exit time and the corresponding results of Brownian motion in Markov process are introduced ,and previous remarkable achievements on the excursion of Brownian motion are numerated too ,also ,we introduce the main results and the history of elliptic diffusion process; In chapter two ,we summarily describe the excursion in Markov process and the result of the first hitting time of the elliptic diffusion process ; In last chapter ,we study estimates for the distributions of above three maximum excursions and minimum excursion in the elliptic diffusion process on R (d≥3), which leads the excursion of Brownian motion on ball on R (d≥3) to become a particular case .

全文共分三章，第一章介绍对称Markov过程中布朗运动的未离时分布及相关研究结果，列举了前人对布朗运动的游程问题的研究成果，并用较多篇幅介绍了一类特殊且非常重要的扩散过程——一致椭圆扩散过程的研究历史和本文的主要研究结果；第二章介绍Markov过程有关停时及游程的概念，叙述了一致椭圆扩散过程的定义，并给出了一致椭圆扩散过程有关首中时的结果；第三章是本文的核心部分，详细讨论了暂留一致椭圆扩散过程关于R~d(d≥3)上球的三类极大游程和极小游程的分布估计，使得布朗运动关于球的游程问题成为特例。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。