查询词典 four dimensional

We have investigated the conformational features of four short peptide fragments of Staphylococcal nuclease by homonuclear two-dimensional NMR and circular dichroism with a view to examining the early events in the folding process of SNase.

中文题名金黄色葡萄球菌核酸酶折叠起始位点：N-末端短肽段的NMR研究副题名外文题名 Folding initiation sites of staphylococcal nuclease：exploring the solution conformation of N-terminal fragments by nuclear magnetic resonance 论文作者戴继勋导师王金凤研究员学科专业分子生物学研究领域\研究方向学位级别博士学位授予单位中国科学院生物物理研究所学位授予日期2001 论文页码总数68页关键词金黄色葡萄球菌核酸酶蛋白质折叠核磁共振馆藏号BSLW /2001 /Q71 /89 本论文工作用四个金黄色葡萄球菌核酸酶N-末端短片段作为新生肽链折叠的模型，用同核二维核磁共振谱和远紫外圆二色谱研究了它们的溶液构象特征。

Methods. A validated 3-dimensional, nonlinear finite element model of an intact adult human L3-L4 motion segment was developed. Four fusion types were simulated using this model, including anterior lumbar interbody fusion, posterior lumbar interbody fusion, intertransverse process fusion, and interspinous process fusion.

制作一个完整的成人腰3-4节段三维立体多元化模型，再用这个模型来制成4种融合方式的模型，包括腰椎前路椎间融合、腰椎后路椎间融合、腰椎横突间植骨融合、椎板棘突间植骨融合；而且达到融合的程度也不尽相同。

Methods:Based on the principle of finite element method and getting three-dimensional coordinates from lateral and frontal cephalometric X-ray films by Baunrind,the landmarks on cephalometric X-ray films were selected as nodes,by which the hard tissue was divided into four noded and pyramidal elements according to anatomic structures and their relationship.

基于有限元分析和Baunrind用头颅正、侧位定位片获取标志点三维坐标的原理，以硬组织标志点作为节点，按照解剖结构及结构间关系对硬组织进行单元划分。

MV X-ray was selected as the radiation source and noncoplanar radiation with four three-dimensional conformal fields was used, the described dose was 34 Gy/10f/5d.

银夹标记的范围勾画为肉眼靶区，GTV外扩15mm作为计划靶区，采用6MVX线4个野非共面照射，处方剂量为34Gy分10次5d完成。

Two dimensional echocardiography (2DE) and end-systolic CK images were recorded at parasternal long axis, apical four and two-chamber views respectively.

分别记录胸骨旁左室长轴断面、胸骨旁左室乳头肌水平短轴断面、心尖四腔心断面(A4C)、心尖两腔心断面(A2C)的CK图像。

Three-dimensional stress analysis was carried out for screws with four different radii and cross-sections of the taper screw including rectangle sections without, with single and double round angle transition for strengthening, and trapeziform section.

在此基础上应用ANSYS软件对无圆角、单圆角、双圆角矩形和梯形四种截面的螺杆进行了三维应力分析。

By taking into consideration the above problems, the thesis adheres to overall standpointand unrepeated viewpoint in intention, puts goals of psychological health in order,reorganizationally and structurally and closely examines every goal of education ofpsychological health arranged proceeding in all cases from the practice on the basis ofseriously defining the controversial concepts, such as psychological diathesis, perfectpersonality, good individuality, etc. The thesis at last sums up into the focus of goal structure of education of psychologicalhealth, emotional attitude,"Four Learn"(foundational rule, method and tactics),"FourSelves"(self-development mechanism) and forms the general, foundational andwell-structured goal system of education of psychological health according to thethree-dimensional-structured goals advocated by New Curriculums Standard.

本文针对以上问题，在对心理素质、健全人格、良好个性心理品质等有争议的概念认真界定的基础上，坚持整体的观点，坚持内涵不重复的原则，对现有心理健康教育目标进行了跨层次、跨结构的整合，并从心理健康教育的实际出发，对整合后的心理健康教育目标逐一进行审视定位，最后根据新课程标准提出的&知识与技能&、&过程与方法&、&情感、态度、价值观&的三维目标框架，归纳出&情感态度&、&四会&、&四自&的心理健康教育核心目标结构，形成了具有根本性、现实性、生成性而且结构良好的心理健康教育核心目标体系。

The explosively formed projectile with fins for a cover charge structure by LS-DYNA software which four covers were conglutinated on the liner was studied by three-dimensional numerical simulation. The mechanism of forming EFP with fins was discussed based on the curves of velocity and pressure vs time of the liners. A contrastive analysis was carried out on the three kinds of liners which include big-cone shaped liner, imperfect-sphere shaped liner and arc-cone shaped liner.

采用LS-DYNA对在药型罩上粘附隔板结构形成带尾翼型爆炸成型弹丸(explosively formed projectile，EFP)进行三维数值模拟，从药型罩微元压跨速度和压力的角度初步探讨了形成尾翼型EFP的机理，对同一直径的大锥角型、球缺型和弧锥结合型药型罩形成的尾翼型EFP进行了对比分析，三种结构药型罩均能形成较为明显的尾翼，其中大锥角型药型罩得到的EFP速度最高。

Methods Fifty F-344 rats were divided into four groups, GM only、PAA+GM、PAA only and saline control. ABR thresholds at different frequencies were measured at different times and hair cell losses were numerated. Two-dimensional diffusion assays in the culture medium were performed to evaluate the effect of PAA on the antimicrobial activity.

选用健康F-344大鼠50只，随机分4组：Ⅰ为GM、Ⅱ为PAA+GM、Ⅲ为PAA、Ⅳ为生理盐水对照组；通过观测4组大鼠不同时期、不同频率听性脑干反应（auditory brainstem respons，ABR）阈值的改变；计数耳蜗毛细胞死亡率，以观察PAA对F-344大鼠GM耳蜗毒性的拮抗作用；用双向扩散血清培养基检测法观察PAA 对 GM 抗菌活性的影响。

The geometric three-dimensional objects are combined of four cubes of the same size. Three children have been interviewed and their problem solving activities were video-taped, records were transcribed later into protocols for further analysis.

透过晤谈法来收集儿童解决立体四连块分类问题的资料后，将这些资料转译、编辑成晤谈原案，进而分析，得到以下的结果。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。