合成的

It was found that the MCM-22 zeolite catalyst prepared by the VPT method not only showed good crystallinity and high BET surface area, but also better crystal growth orientation and denser structure.The catalyst showed high activity, selectivity and good stability for alkylation of benzene with propylene, especially better selectivity to the end product cumene.The shaped MCM-22 zeolite catalyst prepared by the VPT method has good prospect of industrial application in synthesis of cumene.

结果表明：汽相法制备的MCM-22分子筛催化剂不仅具有较好的结晶度和较高的微孔表面积，而且具有更好的晶体生长取向性和更加致密的结构；在烷基化反应中也具有很好的活性、选择性和稳定性，特别是对目的产物异丙苯的选择性明显高于水热法合成的催化剂，在异丙苯合成上具有很好的应用前景。

In chapter 1, the progress in study of the ruthenium complex oxides. especially the coexistance of magnetism and superconductivity in 〓 and 〓 are introduced. The introduction makes conclusion that all of the Ru-1212 and Ru-1222 compounds reported are accompanied by small amounts of SrRuO〓 impurities, this is to say that, it is difficult to synthesize pure samples of these two compounds by traditional solid state reaction. So the author think that the studies for new synthesis methods of ruthenate superconductors which is beneficial to the synthesis of new type precious metals superconductivity is very important till now.

第一章重点综述了钌系复合氧化物的研究进展，特别是其中超导电性的发现及其钌系1212、1222相铜氧化物超导电性和铁磁性共存的特征，在此基础上可以看出，至今文献报道所获得的Ru-1212和Ru-1222相化合物都含有少量的SrRuO〓杂相，即很难通过原有的固相反应方法得到纯相化合物，由此作者提出，现有钌系超导氧化物合成的新方法研究仍具有重要的现实意义，这也将更有利于探索合成新型贵金属超导体。

The present dissertation reviews the total synthesis of biotin, particularly on Hoffmann-La Roche\'s Lactone-Thiolactone approach. The Lactone-Thiolactone approach is presently the most competitive commercial route, which gives an excellent illustration of the gradual construction of the functionalized skeleton with the simultaneous solution of the stereochemical issues in a minimal number of steps.In 1970, Gerecke etc. of Roche Corp.

论文对生物素全合成的文献进行了综述，重点讨论了目前工业上最有竞争力的内酯—硫代内酯路线，展示了生物素是如何以最少的步骤去逐步构建目标产物的官能团骨架并同时解决立体化学问题的。1970年，Roche公司的Gerecke等报道了一条通过手性内酯，以较高收率并保持构型得到手性硫代内酯，从而直接合成d-生物素的方法后，该中间体内酯(3aS，6aR)-1，3-二苄基。

The invention provides a preparation method of small crystal SAPO-43 molecular sieve, which is characterized in that: the stepwise procedures are adopted to synthetize SAPO-43 molecular sieve, temperature-rising rate in different temperature phase during crystallization is controlled, so that the synthetized SAPO-43 molecular sieve has small particles, even crystal particles, short crystallization time, and reduce the amount of templates greatly, thereby reducing environmental pollution.

本发明的目的是提供一种小晶粒SAPO-43分子筛的制备方法。本发明的特点在于它是采用分阶段程序升温来快速合成小晶粒SAPO-43分子筛。通过对晶化过程中不同温度段内升温速率的控制，从而实现了合成的SAPO-43分子筛晶粒小，晶粒尺寸分布均匀，晶化时间短，且大大的降低了模板剂的用量，从而减少了对环境的污染。

The thermal property studies indicate that the mass loss of compound B was 54.39% at 242.2~750℃, and when the temperature was 1000℃, there was 25.11% char residue left, which showed that the title compound has a good thermal stability and char forming capability. Using acetonitrile as the solvent instead of trichloromethane or 1, 2-dichloethane gave higher yield. During the synthesis, the yield was very low when triethylamine was used as acid acceptor alone, and when a little amount of 4-dimethylaminopyridine was added at the same time, the yield could be 81%.

结果表明，所合成的化合物B的结构与预期的结构一致；热性能研究表明，化合物B在242.2~750℃质量损失为54.39%，1000℃时仍有25.11%的炭残渣，显示出优异的热稳定性和成炭性；在相同反应条件下，用乙腈作为溶剂的反应产率比使用氯仿和二氯乙烷为溶剂的高，并且在合成过程中，单独使用三乙胺作为缚酸剂时产率很低，而当同时加入少量4-二甲氨基吡啶时，产率可达81%。

In this research, B2 gene of HCV was highly expressed as a fusion protein (Trx-B2) by cloning into pThioHisA, and induced specific anti-HCV antibody in higher titer than unmodified B2 protein after immunize mice or rabbit.The results showed antigen Trx-B2 has obvious immunogenicity and induced specific antibody,which might be able to serve as diagnosis HCV. Consequently, this PcAb of rabbit was used to coated Immulon plate, and a method of both antibodys sandwiching antigens was developed to detect 32 HCV positive serum and 32 nomal serum.Results show that ratio of positive are 87.5%and 43.75% respectively.

但缺点是该抗原所诱导的抗体滴度较低，可能是由于其分子量较小，所以本课题将人工合成的HCV复合多表位抗原基因B_2克隆到表达载体pThioHisA中，利用硫氧还蛋白融合方式对该抗原进行修饰，并在大肠杆菌中表达融合蛋白(Trx-B_2)，纯化该蛋白后免疫小鼠及家兔，结果表明用硫氧还蛋白修饰后的融合蛋白免疫小鼠和家兔后，得到的抗体滴度均高于未经修饰过的复合多表位抗原合成肽所诱导的抗体滴度，并从免疫后的兔血清中提取IgG包被酶联板，利用双抗夹心法分别检测了32份HCV阳性血清和32份正常人的血清，结果阳性率分别为87.5%和43.75%，符合率为71.88%。

The grain size of the material prepared by dopping Sr in the position "A" or dopping Co or Ni in the position "B" of the La_4BaCu_5O_13＋δ is small but it becomes bigger by dopping Ce in the position "A" of the La_4BaCu_5O_13＋δ.

SEM测试表明材料的粒径随着温度的升高而迅速增大，但颗粒的分布比较均匀。A位掺Sr和B位掺Co和Ni时合成的材料的粒径较细小，而A位掺Ce时合成材料的颗粒较大，这与BET测试和孔径分布测试相一致。

The invention adopts the technical proposal that the nucleation and process of growth of the molecular sieve are controlled properly by adding crystal seeds containing zeolite beta precursors in the synthetic process of the intergrowth molecular sieve for producing the intergrowth molecular sieve, wherein the proportion of intergrowth phases is adjustable, the synthesized intergrowth molecular sieve adopts the compositions including the following mole relation: nSiO2:Al2O3, where n is between 4 and 400 in the formula, and the method is characterized in that the intergrowth molecular sieve has more than two phases and an XRD diffraction pattern thereof has the d-space maximum value at the lengths of 13.58 -0.1, 11.50 -0.04, 11.21 -0.1, 10.04 -0.1, 9.47 -0.1, 9.09 -0.1, 7.56 -0.1, 6.6 -0.1, 4.5 -0.1, 4.16 -0.05, 3.98 -0.05, 3.86 -0.05, 3.76 -0.04, 3.53 -0.04 and 3.38 -0.02 angstroms, thereby solving the problems properly.

本发明通过采用在共生分子筛合成过程中，加入含β沸石前驱体的晶种，控制好分子筛的成核和生长过程，制备出了一种共生分子筛，其中共生物相比例可调，合成的共生分子筛采用包括以下摩尔关系的组成：nSiO 2 ∶Al 2 O 3 ，式中n＝4～400，其特征在于所述共生分子筛具有两种以上的物相，其XRD衍射图谱在13.58±0.1，11.50±0.04，11.21±0.1，10.04±0.1，9.47±0.1，9.09±0.1，7.56±0.1，6.6±0.1，4.5±0.1，4.16±0.05，3.98±0.05，3.86±0.05，3.76±0.04，3.53±0.04，3.38±0.02埃处有d-间距最大值的技术方案，较好地解决了上述问题。

The invention adopts the technical proposal that the nucleation and process of growth of the molecular sieve are controlled properly by adding crystal seeds containing MCM-22 precursors in the synthetic process of the three-phase intergrowth molecular sieve for producing the three-phase intergrowth molecular sieve, wherein the proportion of intergrowth phases is adjustable, and the synthesized three-phase intergrowth molecular sieve includes compositions having the following mole relation: nSiO2:Al2O3, where n is between 4 and 400 in the formula, wherein the three-phase intergrowth molecular sieve has more than two phases and an XRD diffraction pattern thereof has the d-space maximum value at the lengths of 13.58+-0.1, 12.35+-0.1, 11.21+-0.1, 10.04+-0.1, 9.09+-0.1, 8.83+-0.1, 6.6+-0.1, 6.17+-0.1, 4.5+-0.1, 4.09+-0.05, 3.98+-0.05, 3.86+-0.05, 3.76+-0.04, 3.64+-0.04, 3.47+-0.05, 3.38+-0.02, 3.29+-0.04, 3.19+-0.05 and 2.88+-0.1 angstroms, thereby solving the problems properly.

本发明通过采用在三相共生分子筛合成过程中，加入含MCM-22前驱体的晶种，控制好分子筛的成核和生长过程，制备出了一种三相共生分子筛，其中共生物相比例可调，合成的三相共生分子筛包括以下摩尔关系的组成：nSiO2∶Al2O3，式中n＝4～400，其中所述三相共生分子筛具有两种以上的物相，其XRD衍射图谱在13.58±0.1，12.35±0.1，11.21±0.1，10.04±0.1，9.09±0.1，8.83±0.1，6.6±0.1，6.17±0.1，4.5±0.1，4.09±0.05，3.98±0.05，3.86±0.05，3.76±0.04，3.64±0.04，3.47±0.05，3.38±0.02，3.29±0.04，3.19±0.05，2.88±0.1埃处有d-间距最大值的技术方案，较好地解决了上述问题。

KidZinc Lozenges also provide a soothing combination of herbal extracts, including Echinacea, Olive Leaf, Slippery Elm and Ginger, which have a long history of use by traditional health care preactitioners.

本产品将有机合成的锌和植物中有效成分完美的结合起来，能充分发挥作用，每片含有8mg的高质量的有机合成的锌，并含有健康保健的植物草本精华，包括紫锥花，橄榄叶，红榆，生姜，这些做为健康保健预防都有悠久的历史。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。