查询词典 morphologic synthesis

This paper bases on frequency-hopped and frequency synthesis theories, and through demonstrating three schemes of frequency synthesis, the paper selects one of these schemes that uses DDS spiriting up PLL and improves on the method according to the practical target and synchronously, the paper analysis the capability of the output signal and the conversion time of the frequency.

本文在对跳频理论及频率合成理论分析的基础上，在讨论三种频率合成方案后，设计完成了一种适于本课题的DDS激励PLL的混合方案，并对频率合成器主要性能中的输出信号的噪声特性和频率转换性能做了研究分析。

Beta-thalassemia major is a serious hereditary hemolytic anemia which does great harm to human being.It is a monogenic disease characterised by a reduced synthesis of beta-globin chains,which dues to the Doint mutation or deletion of beta-globin gene and its control region.It not only decreases the hemoglobin level,but breaks the balance of alpha/beta synthesis ratio.The major cellular pathogenetic mechanisms in beta thalassemia are based primarily on the deleterious effects produced by the accumulation of the excess alpha globin chain.These excess alpha-globin chains cannot form stable tetrameric structure and deposit in erythroid cells.They cause large ineffective erythropoiesis on their own,accelerate red cells destruction,and lead to hemolysis.

地中海贫血是一种对人类健康危害严重的遗传性溶血性贫血病，是因β-珠蛋白基因及其调控序列的点突变或缺失致使β-珠蛋白肽链合成减少或完全停止，这不仅使患者血红蛋白水平降低，而且使原来在数量上与之持平的α-珠蛋白肽链相对过剩，这些相对过剩的游离α-珠蛋白肽链并不能形成稳定的四聚体，它们沉积在红细胞中导致了大量无效红细胞生成和红细胞寿命缩短，引起了严重的溶血性贫血。

Synthesis and Characterization of MWNT-containing Polyurethane-urea Based on the typical two-step polyurethane-urea synthesis, self-crosslinkable polyurethane-urea compounded of PTMO Poly (tetramethylene oxide, MDI (4,4'-diphenylmethane diisocyanate) and extended by AEAPS (aminoethyl aminopropyl trimethoxysilane) were prepared.

含有纳米碳管的聚氨酷的合成、表征及性质研究首先通过典型的两步法合成了软段为pTMOPoly(tetramethyrene oxide，叠年东师范大李博士后么站银告硬段为MD！(4，4'一diPhenylmethane diisocyanate)，扩链剂为AEAPS (aminoethylaminoProPyltrimethoxysilane)的聚氨醋。

Author had started the research on design and synthesis of heterocycles several years ago, mainly focused on the design and synthesis of imidazole, thiazole, tetrazole derivatives and their glucosides, in which most of them may have some particular bioactivities.

本论文主要是围绕具有生理活性含氮杂环化合物的设计与合成而展开的，在论文工作中我们应用液相&一锅法&和固相组合化学方法进行了咪唑环、噻唑环、四氮唑环等具有生理活性的杂环化合物及其糖苷的合成。

Study on synthesis of phosphonic acid with thiadiazole and corrosion resistance on copper;2. Synthesis of N,N-dimethyl-1-aminomethane-1,1-di phosphonic acid N-oxide and researches on its corrosion and scale inhibition performances;3. Two phosphonic acid s: dodecylamine-N,N-dimethylene phosphonic acid and dodecyl phosphonic acid,were used to modify zirconia stationary phase in this paper.

通过红外、元素分析对2种不同类型的膦酸化合物改性氧化锆的改性条件和改性机理进行了研究，结果表明：十二烷基膦酸通过Lewis酸碱作用改性，室温浸泡即可达到满意的吸附量；而具有螯合结构的十二胺-N，N-二亚甲基膦酸与氧化锆结合时存在较强的络合作用，最佳改性条件为酸性条件下加热回流。

The facile N-participated transannular reductive rearrangement supports the postulated biogenesis of CET, and accordingly the current synthesis might be regarded as a biomimetic synthesis.

第三章记述了我们在三尖杉碱合成的基础上，应用跨环Clemmensen还原重排关键步骤，成功地构筑了百部碱5-6-7三环核心骨架的研究。

It is involved in the synthesis of triphenylcarbinol. In this pater, based on the principle of the ultrasonic wave radiation and its advantages, triphenylcarbinol was synthesized by ultrasonic irradiation. We have researched the influence on the synthesis of triphenylcarbinol for the solvent of different purity.

三苯甲醇的制备中就涉及到了格氏试剂的合成，本文根据超声波辐射作用的原理及其优点，利用超声波辐射法合成了三苯甲醇，考察了不同纯度的乙醚溶剂对产物合成的影响。

Results ET-1 increased the synthesis of soluble type I collagen in different periods besides the 24h group, and had no effects on the type III collagen; immunohistochemical staining revealed that ET-1 also increased the synthesis of unsoluble type I collagen.

结果 ET-1较对照组除24小时时相外，均有不同程度的促HDPC可溶性I型胶原合成作用，但对III型胶原作用不明显；经免疫组化染色证实：ET-1尚可同时促进细胞非溶解性I型胶原合成。

Methods The method of methylation and microwave synthesis method of microwave radiation Veratryl aldehydes, synthesis of these two methods compare the yield of the product and the fundamental nature, analyzing the advantages and disadvantages of both methods.

采用甲基化的方法和微波微波辐射的方法合成藜芦醛，比较这两种方法合成产物的产率及基本性质，分析两种方法的优劣。

The type synthesis and kinematic analysis of secondary counterbalancing GLMs are carried out with the above-mentioned structure synthesis method and GTTM respectively.

用所提类型综合的方法对抽油机二次平衡GLM进行了结构综合；用广义型转化法对GLM进行了运动分析，并对方案进行了选优。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。