产物

Wesynthesized (2E, 6E)-farnesol 12 starting from compound 24 by three steps.The optical sesquiterpenoid 14 was synthesized starting from--citronellol with a 28% overall yield, and the absolute configuration of 14 wasinfered (3R, 7S)-3, 7, 11-trimethyl-10-oxododecanoic acid on the basis of thechirality of starting material and biogenic relation.

以手性--香茅醇为原料，经七步反应也合成了旋光活性的目标分子14，结合生源关系，推测天然产物14的立体结构为(3R，7S)-3，7，11-三甲基-10 氧代-十二碳酸；对手性中间体34经脱除羰基得到手性天然产物(3R.7RS)-六氢法呢醇13。

Potassium ferricyanide and dithiothreitol were used to control redox potential from －100 mV to －450 mV in 3 L fermenter.

在3 L发酵罐上利用铁氰化钾和二硫苏糖醇调节发酵体系氧化还原电位值在－100～－450 mV，结果表明－350 mV为菌体生长和产丁二酸的最佳电位，丁二酸生产速率由0.75 g/提高到1.18 g/，产物丁二酸与副产物乙酸的质量浓度比由2.5提高到3.9。

The mineral composition of typical coal combustion residues in China, including fly ash, bottom ash, slagging and fouling, were investigated by X-ray diffraction, Missbauer spectroscopy and scanning electron microscopy. According to the chemical composition, coal combustion residues can be divided into aluminosilicate, ferruginous and calcareous groups.

利用X射线衍射、穆斯堡尔谱与扫描电子显微镜等方法研究中国典型燃煤煤种的燃烧产物的矿物学特征，揭示出不同化学成分以及不同类型产物中矿物组成的差异性。

The method needs several parameters, such as average fission yields of fission products, correction for reaction, decay correction for radlioactive fission products in reactor, average fission energies of fissionable nuclides and so on.

它需要若干参数，如裂变产物的平均裂变产额，反应的修正量，放射性裂变产物的堆内衰变修正量，可裂变核素的平均裂变能量等。

The reaction mechanism of HNO2 and C6H5Br in aquepus solution with the presence of O2 or absence of O2 is studied by laser flash photolysis transient absorption spectrum technique under irradiation at 355nm.The intermediate and final products have been analyzed after the irradiation of laser.The photolysis mechanism of C6H5Br…OH has been discussed.

另外，采用激光闪光光解瞬态吸收光谱技术，从微观反应机理角度分析了无氧或氧气饱和条件下HNO2与C6H5Br的光化学反应，以及溶液经激光照射后产物的生成情况，并着重探讨了反应中间产物C6H5Br…OH的微观反应机理，得到了一些重要的动力学参数。

These differences arise from different stabilities of a common intermediate of reduced flavin enzyme and pyruvate.

乳酸单加氧酶的催化机理和乳酸氧化酶相似，但产物不同，这主要是由于中间产物复合体稳定性的差别。

Under the same conditions of the monomer ratio, improved the cationic degree and flocculation performance.

本实验在单体配比不变的条件下，提高了产物的阳离子度，从而提高了产物的絮凝性能。

2 STR-PCR We analysed the results of STR with the silver dye in the beginning. The silver dye of STR analysis on a sporadic DMD family shows the band confirmation is subjective by eyeballing. It can not detect the small repeats and the size of polymorphic fragments. For limitation of the silver dye, we analysed the band size of STR with the SAGAGT Genotyping System. Primer are designed according to the nucleotide sequence of five STR markers (located in 5' terminus and intron 44, 45, 49, 50) of dystrophin gene. The 5' end of the forward primer are attached a M13 tailed primer which conjugated to the infrared flourescent dye.

根据dystrophin基因5个多态位点（44、45、49和50号内含子以及5'端启动子区的序列）设计引物，在这些STR的上游引物5'端加一可被红外线荧光物质IRDye700识别标记的M13fw的尾：CAC GACGTT GTA AAA CGA C 通过PCR扩增出重复序列本身，经高分辨率的变性聚丙烯酰胺凝胶电泳后，利用红外激光遗传分析系统及SAGA〓基因分型软件对凝胶上的扩增产物及内标的位置，进行扫描分析，确定产物片段的大小。

Investigation on the intermediates shows that the shape of products changes from curled nanoflakes to flower-like patterns then dense flower-like patterns with the increase of complex concentration and reaction time.

对中间产物的研究结果表明，随着配合物浓度的增加、反应时间的延长，产物形貌从卷曲的片状转变成纳米片组成的花状且花状结构逐渐增密。

In the reaction of a-stannyl radical addition to carbonyl to form six-membered ring, we constructed a sulfonyl group at the a position of the formyl group to inhibit 1,5-H shift in order to increase the cyclization product yield. We obtained 41 % yield of the cyclization product in this system.

在 a-锡基自由基加成到醛基形成六员环的系统中，我们在醛基的 a 位上加入碸基来抑制 1，5-氢转移并提升环合产物之产率，在这个系统中，我们得到了 41 %的环合产物。

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。