应用化学

MTA was used to manage clinical problems. These included pulpless permanent teeth with incomplete root formation and perforation in roots or furcations. Total 10 cases (12 teeth), former 7 cases (7 teeth) and latter 4 cases (5 teeth), were present. The follow-up periods were various from 6m to 21m.

应用免疫组织化学手段，观察细胞外非胶原蛋白骨唾蛋白（bonesialoprotein，BSP）、骨桥素（osteopontin，OPN）和骨钙素（osteocalcin，OC）在根尖周组织愈合期间的表达，尤其是在与倒充填材料直接相邻区域的表达。

Methods: The fibroblasts companying human hepatoma were primarily cultured with explant culture method, first passaged after they spread to the bottom of the culture bottle, and pured by enzyme digestion and repeated strapping the cells were identificated through observing the morphologic change using invert microscope and detecting expression of vimentin, keratin by iMmunohistochemical method.

应用组织块培养法进行人肝癌伴生成纤维细胞的原代培养，细胞铺满培养瓶底后首次传代，通过胰酶消化法和反复贴壁法进行成纤维细胞的纯化；通过倒置显微镜观察细胞形态、免疫组织化学方法检测细胞膜波形蛋白、角蛋白表达情况，对细胞进行鉴定。

Transition metal Pyrazolyl ligands have attracted considerable attention as in catalysis, magnetic coupling, biological mimicry, electron transfer, optic-physics area because of pyrazolyl ligands have luxuriant self-assembly chemistry and as a kind of multifunctional organic ligand.

吡唑类配体是一种较复杂的多功能有机配体，有着丰富的自组装化学，使其形成的过渡金属配合物在催化、生物仿生、磁学耦合、电子转移和光物理性质等方面具有潜在的应用价值，近年来受到广泛的关注。

Our study demonstrated that pyrrolic amide, which not only has self-assembly ability via hydrogen bonding but also can recognize anionic specis, is a versatile molecule and would has potential application in supramolecular chemistry.

研究表明，吡咯酰胺化合物不仅具有良好的氢键自组装能力，还是一类新的中性阴离子识别主体，在超分子化学方面将会有很好的应用前景。

For confirmation of this ancient legend and found out the sexual improvement compounds the testosterone and NO in serum of mice were measured,the weight of sexual organs of mices was detected and the sex behaviour of mice was observed.The testosterone and NO concentration in serum of mice as indicator for screening some improving sexual compounds from Chinese chives was builted.1、The preliminary experiment of Chinese chives confirm sexual improvement functionThe sexual improvement function experiments of Chinese chives comparing with herba epimedii,herba cynomorii and radices morindae which were acknowledged as chinese herbals having sexual improvement function were carried out.The result was showed that the Chinese chives was confirmed having sexual improvement function,though its efficacy was less than herba epimedii,herba cynomorii and radices morindae.

为了证实古代医学认为韭菜的壮阳功能，揭示韭菜起温肾壮阳作用的化学物质基础，开发其功能性物质成分，本实验首先应用韭菜酒精初提液对小鼠睾酮、NO含量、性器官、性行为等指标的测定，验证韭菜是否具有改善性功能作用，然后以小鼠睾酮、NO含量等为指标对韭菜中的壮阳物质进行逐步分离和改善性功能作用筛选，以鉴定出几种改善性功能的物质。1、韭菜改善性功能的验证将韭菜与淫羊藿、琐阳、巴戟天三种有温肾补养功能的中草药进行比较，发现韭菜改善性功能作用不如淫羊藿、琐阳、巴戟天壮阳中草药的效果明显，但是韭菜还是具有显著的改善性功能作用的(P＜0.001)。

All the exisiting, new chemical substances itself and which applied to every manufacture need to registrate basic information when the output in quantities of 1 tonne or more per year.

要求年产量超过1吨的所有现有化学品和新化学品及应用于各种产品中的化学物质注册其基本信息。

Side effects, however, limit the use of retinoid chemoprevention.

然而，副作用限制了阿维 A 作为化学预防皮肤癌的应用。

METHODS: A summary was performed of the existing literature regarding experience with retinoid chemoprevention for skin cancer in organ transplant patients.

执行现有文献摘要中所运用的方法（该文献是关于应用阿维 A 化学预防器官移植受者皮肤癌的文献）。

In this work, the potentials of the hyphenated HPLC-DAD-SPE-CryoNMR-MS techniques were demonstrated in characterization and structural elucidation using the complex extracts of rosemary ( Rosmarinus of ficinalis L.) as an example.

本文以迷迭香的两种溶剂提取物（氯仿/甲醇=3/1和50%含水甲醇）作为模型样品，通过分析其中的一些化学成分，展现了HPLC-DAD-SPE-CryoNMR-MS无缝联仪技术在确定代谢物结构方面的应用潜力。

Autocorrelation topological study on the acute toxicities of substituted aromatic compound s;2. The autocorrelation topological researches on slow and acutetoxicities of substituted aromatic compound s to scenedesmus ubliquus, rat and so on;3. Results show that the SW and KOW of the substituted aromatic compound s could be better forecasted at AM1 level.

应用分子力学方法MM+和半经验量子化学AM1、MNDO和PM3法得到了54种取代芳烃的优势构象，在此基础上结合分子图形学技术，获得相应优化构象的电子结构参数和几何结构参数，并将这些参数与取代芳烃的辛醇/水分配系数和溶解度相关联。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。