化学

In the view of features and standards of chemical subject in the secondary school, carefully discuss and study idiographic examples of integration.

并结合化学学科的特点和中学化学新课程标准，对整合的具体实例进行了细致的探讨和研究。

In addition, ioding was found to be an efficient catalyst for the imino Diels-Alder reaction of N-arylimine and enol ethers and the reaction provided tertrahydroqinolines in good yields. One pot synthesis of tetrahydroqinolines from aldehyde, aniline and enol ethers was also achieved using iodine as the catalyst. The chemical yield of the"one pot"reaction was comparable with that obtained using preformed N-arylimine.

此外我们也发现碘能够有效地催化N-芳基亚胺与烯醇醚的Diels-Alder反应，以很高的化学收率得到了四氢喹啉衍生物，并且发现碘也能够直接催化芳香醛、苯胺、烯醇醚的三组分&一锅&反应，获得的化学产率与使用预制的N-芳基亚胺相当。

The research of indoles has been one of the most active areas of heterocyclic chemistry. In particular, 3-substitued indole derivatives have been received much attention as building blocks for the synthesis of many natural products and other biologically active compounds.

目前吲哚化学的研究是杂环化学中最活跃的领域之一，特别是3-取代吲哚衍生物，已用于许多天然产物和相应具有生物活性化合物重要骨架的构筑，其合成方法的研究格外令人注目。

In Chapter 2, introduces elementary theory and quantum chemistry computation methods, which mainly contained the reaction surface, crossing rules of the potential energy surfaces, tradition transition state theory, spin-orbit coupling mechanism and rules for intersystem crossing.

第二章简要地介绍了量子化学计算方法，主要包括量子化学基本理论和反应势能面、势能面相交与不相交规则、过渡态理论和系间窜越的选择规则。

Despite evidence implicating prostaglandins as critical factor in male reproductive functions, little is known about expression and function of COX-2 in the male reproductive system. By using immunohistochemistry, RT-PCR and Western-blot, the content of this research included:(1) The expression and localization of COX-2 in mature rat and human testis were examined.(2) We investigated the changes of spermatogenesis and testosterone levels in testis after by using the COX-2 specific inhibitor-rofecoxib at 2, 4 and 8 weeks.(3) To explore the relationship between the intratesticular level of testosterone and expression of COX-2 by completely destroying the Leydig cells of mature male rats with injection of a single I.

本课题应用免疫组织化学、RT-PCR和Western-blot等方法检测以下内容：(1)在mRNA和蛋白水平检测正常成年男性及大鼠睾丸组织中COX-2的表达及定位情况；(2)实验组大鼠持续给予COX-2酶的特异性抑制剂Rofecoxib，分别于用药后2周、4周和8周检测大鼠的精子生成以及睾丸组织内睾酮浓度的变化；(3)另一组实验大鼠给予特异性Leydig细胞灭活剂EDS，在特定时间内抑制睾丸组织内合成的睾酮，于用药后2周和4周，采用免疫组织化学及RT-PCR方法观察大鼠睾丸组织内睾酮浓度变化对COX-2合成的影响。

The iodometric titration was used to determine the oxida- tion state of Fe ions and the oxygen nonstoichiometry in La1-xSrxFeO3-δ.

9的化学相容性；利用碘滴定法测定了该系列产物中Fe元素的平均表观化合价和氧的非化学计量值。

The iodometric titration was used to determine the oxida- tion state of Fe ions and the oxygen nonstoichiometry in La1-xSrxFeO3-δ.

用FTIR、TG-DTA、XRD等对产物形成过程及结晶学特征进行了研究，考察了合成样品与Sm0.2Ce0.8O1.9的化学相容性；利用碘滴定法测定了该系列产物中Fe元素的平均表观化合价和氧的非化学计量值。

At first it may seem rather strange to treat the chemistry of the halogens and the noble gases,two groups that represent the extremes of chemical activity and inertia ,in the same section .the superficial differences between the halogens and the noble gases are much reduced,however if we focus our attention on the comparison of halide ions(particularly F-) with the isoelectronic noble gas atoms and the noble gas compounds with halogen atoms or the halogens in their higher positive-oxdation states.

起初它可能看起来很奇怪对待的卤素化学和惰性气体，两个团体代表在同一节的化学活性和惯性的极端。与卤素和惰性气体的表面差异大大减少，但是，如果我们着眼于（特别是架F -等电子与惰性气体原子和原子与卤素或在卤素稀有气体化合物）卤离子的比较，我们的注意力较高的正- oxdation国家。

At first it may seem rather strange to treat the chemistry of the halogens and the noble gases,two groups that represent the extremes of chemical activity and inertia ,in the same section .the superficial differences between the halogens and the noble gases are much reduced,however if we focus our attention on the comparison of halide ions(particularly F-) with the isoelectronic noble gas atoms and the noble gas compounds with halogen atoms or the halogens in their higher positive-oxdation states.

起初它可能看起来非常奇怪对待的卤素化学和惰性气体，两个团体代表在同1节的化学活性和惯性的极端。与卤素和惰性气体的表面差异大大减少，但是，假如偶们着眼于（非常是架F -等电子与惰性气体原子和原子与卤素或在卤素稀有气体化合物）卤离子的比较，我们的注意力较高的正- oxdation国家。

The corrosion inhibition of isoquinoline and its hyd roxy and carboxylic derivates were determined by electrochemical methods,and qua ntum chemistry calculation were gained through HMO and CNDO.

用电化学方法实测了异喹啉及羟基、羧基两类取代衍生物的缓蚀效率，并用HMO、CNDO方法进行量子化学计算。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。