同体

They were divided into two groups:elderly group(with 3 or more centrums hyperosteogeny) and younger group(with less than 3 centrums hyperosteogeny). Then they were evaluated according to Meyerding method and analyzed by χ2 and Fisher accurate probability examination.Results Among the younger group,any degree of lumbar spondylo-listhesis had all prominent relationship with spondylolysis.

方法回顾2002年以来笔者所在医院放射科腰椎滑脱患者316例，对腰椎滑脱采用Meyerding法分级，把腰椎滑脱的患者分为老龄组(腰椎同时有3个以上椎体骨质增生)及青年组(腰椎未见骨质增生或有1～2个椎体骨质增生)，同时，在不同年龄组中对不同程度腰椎滑脱患者分组并利用SPSS13.0进行χ2和Fisher精确概率检验分析，得出结论。

Chiral SalanCrX complexesa saturated version of SalenCr(ⅢX are designed,and in conjunction with an ionic quaternary ammonium salt or organic strong base can efficiently catalyze the asymmetric,regio-and stereoselective alternating copolymerization of CO_2 with rac-PO at mild conditions to afford isotactic-enriched polycarbonates with～95%head-to-tail linkages and moderate enantioselectivity.

本论文在Salen构型配体的基础上，设计合成了一系列手性Salan型铬配合物，并将其与季铵盐/有机强碱组成亲电-亲核双组分催化体系，在室温下可以有效的催化CO_2和环氧丙烷的不对称交替共聚反应，实现了CO_2和环氧丙烷的不对称交替共聚反应的区域和立体化学控制，得到95%的头尾连接单元和中等光学纯度(对映体过量值ee%≈70%)的全同结构的聚碳酸酯。

The residual stress in bent pile can be ignored. The curvature of batter pile has important influence on additional moment to bent pile under vertical load on top. When the radius of curvature on the upper segment of pile is small, the additional moment can not be ignored.

得到以下结论：桩体由于施打而发生的弯曲在桩体中产生的残余应力可以忽略不计；桩顶竖向荷载作用下桩身的弯矩同桩的偏斜曲线有重要关系，桩顶处的曲率较大时，桩身的弯矩在工程中是不能忽视的。

For reconstruction from contours, this dissertation uses Active Contour Model to check the boundary contours. The algorithm can generate single, continuous and close contours quickly. For reconstruction from voxel, this dissertation presents an algorithm to trace the boundary contours from segmented regions based on Active Contour Model. The algorithm can trace the contours of inter and outer connected multi-regions correctly and accurately, and can prevent tracing from jumping out to the neighbor region, also can define the contour precision and contour key points actively as snake is growing up.

对于基于轮廓线的表面重建，利用主动轮廓模型（Active Model，又称Snake Model）来完成断层图象上目标轮廓的提取，可以获得单象素连通的封闭的目标边界轮廓；针对基于体素的表面重建中实施了分割后的体数据，提出了一种基于主动轮廓模型完成二值图象中轮廓跟踪记录的方法，可以对同属于重建目标的内外邻接多区域进行正确和准确的边界轮廓跟踪，使得在跟踪当前轮廓时不会跨越到相邻轮廓，且主动轮廓的精度可以根据参数交互决定，尤其是能够在主动轮廓成长的同时主动定义轮廓关键点。

This PhD thesis mainly summarizes the original results on studies of aromatic amide-derived phosphines,including the precatalyst system consisting of Aphos and Pd_2 and the applications for promoting room temperature Suzuki cross-coupling of aryl chlorides and aryl/vinyl bromides,respectively,with aryl/vinyl boronic acids,and alkyl boranes.

本博士学位论文主要总结了对芳基酰胺衍生的膦配体的研究，以及该类型配体与Pd_2组成的催化剂在室温下催化氯代芳烃、溴代芳烃、溴代烯烃分别同芳基硼酸、烯基硼酸及烷基硼试剂进行的Suzuki偶联反应中的表现。

There are some isomeric compounds of hydroxypyridinone. The compounds of 2-hydroxy-6-pyridinone have been used to dyestuff and pesticide widely. The compounds of 3-hydroxy-2-pyridinone and 3-hydroxy-4-pyridinone are paid attention to, because they are very useful heavy metal chelations. Especially, they are wonderful candidate medicament for the toxicosis of depleted uranium, so they can settle the DU jeopardize to the people.

羟基吡啶酮化合物有不同的同分异构体，2-羟基-6-吡啶酮已被广泛用于染料和农药行业，而3-羟基-2-吡啶酮和3-羟基-4-吡啶酮也引起了人们的重视，因为这两种异构体的化合物是非常理想的重金属络合剂，尤其重要的是，它可作为解决贫铀中毒的候选药物，有望解决战争中由于贫铀中毒带来的危害。

The amplified fragment was inserted into pRSET-A to generate the first double repeat of the precursor gene. By utilizing a pair of isocaudamer BamH I and Bgl II sites, and another downstream Hind III site of plasmid pRSET-A, following a series of simple double digestions and ligation of the resulted products, a series of repeat (3, 4 and 6) precursor peptide fragment genes were derived.

本实验设计一对两侧含编码疏水性氨基酸密码子的引物，经过扩增前导序列10~34aa基因序列，并重新克隆入质粒pRSET-A构建串联二聚体后，再利用质粒pRSET-A的BamH I / Bgl II同尾酶克隆位点，经一系列简单的酶切和连接，快速构建这一前导肽中不含组氨酸标签序列的串联多聚体基因，并成功表达其六聚体重组蛋白。

Bitter compounds in saliva activate particular T2R/TRB isoforms activate gustducin heterotimers, activated α-gustducin stimulates PDE to hydrolyze cAMP, the decreased cAMP may disinhibit cyclic nucleotide-inhibited channels to elevate intracellular Ca2+.

唾液中的苦味化合物激活T2R/TRB同型体，这种激活导致味导素异聚体的激活，被激活的α-味导素又激活PDE，PDE水解cAMP，cAMP水平的降低使环核苷酸抑制的阳离子通道去抑制，从而使细胞内Ca2+升高。

Salty and sour directly transduction by apical channels that are non-gated channel or chemically-gated channel. Bitter compounds in saliva activate particular T2R/TRB isoforms which activate gustducin heterotimers, activated α-gustducin stimulates PDE to hydrolyze cAMP, the decreased cAMP may disinhibit cyclic nucleotide-inhibited channels to elevate intracellular Ca2+.

咸和酸直接通过顶部非门控或化学门控离子通道转导唾液中的苦味化合物激活T2R/TRB同型体，激活导致味导素异聚体的激活，被激活的α-味导素又激活PDE，PDE水解cAMP，cAMP水平的降低使环核苷酸抑制的阳离子通道去抑制，从而使细胞内Ca2+升高。

Bitter compounds in saliva activate particular T2R/TRB isoforms which activate gustducin heterotimers, activated α-gustducin stimulates PDE to hydrolyze cAMP, the decreased cAMP may disinhibit cyclic nucleotide-inhibited channels to elevate intracellular Ca2+.

唾液中的苦味化合物激活T2R/TRB同型体，这种激活导致味导素异聚体的激活，被激活的α-味导素又激活PDE，PDE水解cAMP，cAMP水平的降低使环核苷酸抑制的阳离子通道去抑制，从而使细胞内Ca2+升高。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。