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After 6 to 8 weeks behavioral test, electrophysiologic test, muscle weight measurement of flexor carpi ulnaxis and abductor digiti minimi manus, and ultrastructural observation were carried out.
对120只Wistar大鼠在上臂肌皮神经人肌水平不同程度切断尺神经(分别切断1/6,1/3,1/2,2/3及全部),术后6~8周观察大鼠的行为变化,尺神经电生理变化,尺侧腕屈肌及小指展肌的肌湿重比及肌细胞超微结构的改变。
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To compare the image quality of the three sequences in two groups by One-Way ANOVA and T Test. The qualitative assessment standards include clarity, artifacts, signal uniformity, the conspicuity of enhanced vein and the observable grade of intrahepatic venous branchs. The quantitative assessment standards include SNR and CNR of intrahepatic portal vein and hepatic veins. Furthermore, the anatomy and variations of the intrahepatic portal vein and hepatic veins are statistical analysed.
通过方差分析和T检验分别对A、B组三个序列的图像质量进行比较,评定标准包括清晰度、伪影、信号均匀性、静脉强化程度及肝内静脉分支显示级数等定性指标和肝内门静脉、肝静脉的SNR(Signal-Noise Ratio,信噪比)及CNR(Contrast-Noise Ratio,对比度噪声比)等定量指标。
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Also the response amplitude will be changed with the initial conditions due to the nonlinear properties of the cables.Taking the bending stiffness, cable sag and cable inclination into consideration, the space vibration control of the cables using the visco-elastic dampers in cable-stayed bridges is investigated by joining the center difference method and the state space strategy. Both the maximum modal damping ration and the optimal damper size are obtained, then the practical suggestions are proposed for the design of the dampers. The space nonlinear vibration equations of the cable-damper system are derived, and anew hybrid method for solving the cable-damper system is presented by combing the Newmark method and Pseudo-force technology. According to the known properties of the cable-damper system, the nonlinear transient responses are analyzed under all kinds of excitations. Based on the transient response, the control effectiveness of the visco-elastic dampers is further demonstrated.
综合考虑了拉索抗弯刚度、垂度的影响,研究了粘弹性阻尼器对斜拉桥拉索的空间振动控制,联合中心差分方法及状态空间法,得出了拉索面内、外振动各阶模态可能达到的最大阻尼比及相应的最优阻尼器系数,并对斜拉桥拉索的阻尼器设计提出了参考建议:考虑拉索抗弯刚度、垂度及几何非线性,导出了索-阻尼器系统的空间振动非线性方程组,结合Newmark方法及伪力(Pseudo-Force)方法,创新地提出了求解非线性方程组的杂交方法,根据拉索-阻尼器系统的阻尼特性,在各种荷载作用下,对索-阻尼器系统的非线性瞬态振动响应进行了研究,从系统响应的角度更加直接地验证了阻尼器的控制效果。
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In the test research of the most radical plane column-beam joint specimens are done, so the feasibility and the problem for this construction method could be discussed.
基于此,本文有针对性的对轴压比、剪压比及梁柱混凝土强度级差进行控制,设计并完成了7个按梁混凝土强度浇筑的钢筋混凝土平面框架节点的低周反复加载试验,通过量测各试件节点区水平箍筋以及贯穿节点的梁、柱纵筋在不同受力阶段的应变等,综合分析了各个试件的延性、耗能性及梁柱纵筋的粘结退化状况,考察了节点核心区采用梁混凝土浇筑后对试件综合抗震性能的影响。
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Draw the effective composition of the red red-spotted stonecrop through drawing the law in ultrasonic wave at first, learn through the experiment that drawing time , density , firm liquid in supersound will have remarkable influence than on the drawing rate of supersound; 60% ethanol solution of solution, than remarkable ultrasonic reciprocation of time firm liquid have; The best experiment condition is: Solvent solution, firm liquid than for 1:10, draw 45min for 60% ethanol..
首先通过超声波提取法,来提取红景天的有效成分,通过实验得知超声提取时间、浓度、固液比对超声提取率均有显著的影响;溶液中的60%乙醇溶液,固液比及超声时间的交互作用显著;最佳实验条件为:溶剂为60%乙醇溶液、固液比为1:10、提取45min。。
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Japanese eel, Anguilla japonica, is a catadromous fish, that spawned in the sea and migrating between sea- and freshwater. Otolith strontium / calcium ratio has been widely used for recording the migratory history of fish, but the interactive relationship between otolith Sr /Ca ratio and environment factors remained unclear.
鳗鱼为降海洄游型鱼类,一生当中会在淡水与海水之间洄游,近年来有相当多的研究利用其耳石锶钙比来回推鳗鱼洄游环境的历史,因此,本研究期由实验室的控制实验,验证盐度与饵料对鱼体组织锶钙比、耳石锶钙比及分配系数的影响。
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In this article, we have been investigated that synthesizing and properties of shape memory polyurethane. The shape memory polyurethane was synthesized from PCL diol, MDI(4, 4'-diphenylmethane diisocyanate) and BDO (1,4-butanediol) in this experiment. We analyzed that the effect of differential mole ratio of monomers to synthesized SMPU. Besides, the various concentrations of Nano-silver were mixed with SMPU. Mechanical properties and shape memory behavior of SMPU nanocomposite films were investigated.
本研究目的为藉由改变4,4'-二苯甲基二异氰酸盐(4,4'-diphenylmethane diisocyanate, MDI)/聚己内酯二元醇(polycaprolactone diol, PCL diol)/1,4-丁二醇(1,4-butanediol, BDO)等不同莫耳比制备形状记忆型聚氨基甲酸酯(Shape Memory Polyurethane, SMPU);并探讨改变不同单体莫耳比及添加不同浓度奈米银溶液对其物性及形状记忆性的影响。
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As a compress-bend structure, with increasing of the span, length slender ratio and carrying load of arch increase, lateral rigidity and width span ratio of arch ring minish relatively. During construction and service stages, lateral stability becomes more important and a control factor of arch bridge design.
拱肋作为压弯结构,随着跨径的增大,杆件的长细比及所承受的荷载也随之增大,拱圈横向刚度、宽跨比相对减小,在施工阶段及使用阶段横向稳定问题特别突出,常常成为拱桥设计的控制因素。
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As a structure that is compressed and bended, with increasing of the span, length slender ratio and carrying load of arch increase, lateral rigidity and width span ratio of arch ring minish relatively. During constructing and bring to bear, lateral stability becomes especially severity and a control factor of arch bridge design.
拱作为压弯结构,随着跨径的增大,杆件的长细比及所承受的荷载也随之增大,拱圈横向刚度、宽跨比相对减小,在施工阶段及使用阶段横向稳定问题特别突出,常常成为拱桥设计的控制因素。
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The effects of the aspect ratio, the swept-back, the taper ratio and the area ratio of the rudder itself to the whole assembly on the hydrodynamic coefficients are also studied.
文中用数值试验方法探讨了舵展弦比、后掠角、梢根比及舵与组合体的面积比等因素对舵流体动力系数的影响。
- 推荐网络例句
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Plunder melds and run with this jewel!
掠夺melds和运行与此宝石!
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My dream is to be a crazy growing tree and extend at the edge between the city and the forest.
此刻,也许正是在通往天国的路上,我体验着这白色的晕旋。
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When you click Save, you save the file to the host′s hard disk or server, not to your own machine.
单击"保存"会将文件保存到主持人的硬盘或服务器上,而不是您自己的计算机上。