骨架

Having compared the merits and unmerits of several palm print skeletonizations, a table-based lookup skeletonization is proposed.

闭曲线骨架提取要用到很多3×3模板，但是它的数据值有四个，不便于编程和理解。

It obtained the 3D CAD configurations of the grinder parts based on the product modeling, proposed and adopted four modeling methods such as parameterization, skeletonization, scanning and data conversion etc., studied and implemented the automatic transmission of data between isomeric CAD and CAE systems based on specific software platforms.

实现了基于反求工程造型的磨床零件三维CAD造型，提出并应用参数法、骨架法、扫描法和数据转换等四种建模方法，基于具体的软件平台，研究并实现了对异构CAD与CAE系统间数据的自动传递。3。

Because of the high magnification camera, we have to extract the laser streak from the obtained images fist, then we can get the line position of laser streak by using Otsu's method , morphology, skeletonization and Hough transform from the images of inspecting object. The system shows a good performance of getting only 5% error to the reconstructed surface of the standard board.

本系统采用放大倍率较大的镜头，因此在取像之后，必须先做雷射条纹形状的萃取，再运用Otsu演算法做二值化运算，搭配型态学影像处理，骨架化与Hough转换，计算雷射线的相隔距离，再透过前述的公式转换待测物体的厚度值。

Our recent works of PDE-based image processing on electronic speckle pattern interferometry are reviewed,including performing contrast enhancement and denoising simultaneously for ESPI fringes,proposing new oriented PDE denoising models for dense ESPI fringes and a nearly preprocessing-free method for skeletonization of gray scale ESPI fringes.

回顾了近几年偏微分方程图像处理技术在电子散斑干涉条纹处理中的应用成果，包括应用偏微分方程图像处理方法同时实现电子散斑干涉条纹图和相位图的滤波和增强处理，提出用于密集电子散斑干涉条纹处理的方向偏微分方程模型及提取电子散斑干涉条纹骨架线的偏微分方程方法。

Sarsolenone, a novel diterpenoid with [9. 3. 1] carbon skeleton, was isolated from the marine Sarcophyton solidum Tixier-Durivault in South China sea.

Sarsolenone是从我国南海软珊瑚(Sarcophyton solidum Tixier-Durivault)中分离出来的一种结构独特的二萜类化合物，分子基本骨架为[9.3.1]桥环双环结构。

The binding interaction of DNA with the di-iron complex 〓, designed as a model for the di-iron active site in mammalian purple acid phosphatase , are examined firstly and spectroscopically.

对所有研究的含有双核铁、双核锌及双核铜的配合物促进DNA双链水解断裂的反应性进行比较，我们发现要有效地水解断裂DNA双链，对DNA骨架的磷酸基氧原子有一定配位作用的双核金属离子是必要的，因为两个金属离子间存在协同作用，这与有关的天然酶类似。

MCM-41, HMS, and MSU mesoporous silica molecular sieves were prepared via S〓I〓, S〓X〓I〓, S〓I〓, and N〓I〓 assembly pathway, in which cetylpyridium bromide, tetredecylamine, and polyoxyethylene (10) stearyl ether was used as the template, respectively. The mesostructures were characterized and confirmed by XRD, N〓 adsorption/desorption, TG, and high resolution TEM. The difference and relationship between these mesophases were also investigated.

分别以溴代十六烷基吡啶、十四胺和十八烷基聚氧乙烯基醚为模板剂，通过S〓I〓、S〓X〓I〓、S〓I〓和N〓I〓&超分子组装模式&合成了具有MCM-41、HMS和MSU结构的介孔SiO〓分子筛，用XRD、N〓吸附/脱附、TG和高分辩TEM等方法对它们的骨架和孔道结构进行了表征，并系统地比较了这几种介孔结构之间的区别与联系

Described in chapter 3 is the immediate application of the Clemmensen reductive rearrangement reaction to the polycyclic system as illustrated in a elaboration of the 5-6-7 tricyclie core skeleton of Stemona alkaloids in 5 steps: N-alkylation, [3, 2] -sigmatropic rearrangement, Dieckmann condensation, oxidative cyclization, reductive rearrangement, starting from ethyl pipecolinate hydrochloride.

我们以哌啶酸乙酯为起始原料，经氮烷基化，[3，2]-σ重排，Dieckmann缩合，自由基环化，6-6-6元环系到5-6-7元环系的还原重排五步反应，高收率地构筑了百部生物碱的5-6-7氮杂三环骨架，并用X射线晶体衍射法确定了其结构。

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 facts indicate that apart from the asymmetric induction of chiral diamine backbone,sterically hindered substitute groups on the aromatic rings,and the presence of sp~3-hydridized amino donors and its N,N\'-disubstituted groups in chiral SalanCrX complexes all play important roles in controlling polymer stereochemistry and enantioselectivity.

研究发现除了手性二胺骨架的不对称诱导作用，苯环上的大位阻取代基、N，N\'-二取代基的位阻作用以及N原子上sp~3杂化的供电子效应都对调控聚合物的区域和对映体选择性有很大作用。

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。