Fourth , the electrorheoldgical fluids composed of pan / batio3 nanocomposite and chlorated paraffin oil are prepared and the relationship between dielectric performance and electrorheological effect are discussed . fifth , the advantage and disadvantage of electrorheological fluids composed of different structure pan - batio3 nanocomposite are compared , which put a favorable basis for farther design and prepare electrorheological fluid with high performance 研究结果表明:钛酸钡纳米粉末在900处理时为最佳,随热处理温度的升高,粒径长大,而其介电常数随着粒径长大,逐渐降低,在相同条件下,随温度的升高,钛酸钡纳米粉末的介电常数在120出现最大值。
Primary cultured nscs ( labbled by hoechst33342 ) and c17 . 2 ( a kind of immortal nsc cell line expressing b - galactosidase ) were injected into the lateral ventricles of neonatal mouse , then the cells " survial , integration and migration were compared 1w and 6w after the transplantation . the results are as follows : after lw , the living cells of primary nscs were much more than c17 . 2 ( p < 0 . 01 ) , besides , the former mainly resided in the ventricle whereas the latter integrated to the parenchyma 利用此条件,在体比较了原代nscs及永尘化神经干细胞系c17 . 2相同条件下移植后的异同,即将两种细胞注射于新生小鼠侧脑室,分别于1w , 6w后观察比较它们的存活、整合及迁移情况,结果如下: 1w时,原代nscs存活的细胞数远大于c17 . 2 ( p 0 . 01 ) ,且主要分布于脑室系统内,而c17
The paper points out the factor of safety by means of finite element method , the strength reduction method and limit equilibrium method decreases in turn . according to analysis of the strength reduction method , the stability of the cutting slope is less than the stability of nature slope . according to the results by the finite element method , the factor of safety calculated by axial loading stress - strain model is less than the factor of safety by lateral unloading stress - strain model 表明有限元法、强度折减法、极限平衡法得出的安全系数依次降低;依据强度折减法分析,相同条件下,挖方边坡的安全系数较自然边坡的安全系数小;依据有限元西安理工大学硕士学位论文法分析,轴向加荷应力路径模型确定的安全系数较围压卸荷应力路径模型确定的安全系数小。
In the end , the situations of work done by aerodynamic forces on blade surfaces when flow - structure is coupled and is n ' t coupled under the same conditions are compared , the result indicates that the work done by aerodynamic forces after the coupling restraint is unloaded has a distinct change 本文最后比较了相同条件下气固耦合与非耦合时叶表气动力的做功情况,其结果表明解除耦合约束后气动力做功有显著变化,为深入研究振动叶栅流场,必须考虑叶片结构动力因素。
Interestingly , it was found that the er properties of this ternary composite depended on the content of formide . when the weight ration between mmt and formide was closed to 1 : 0 . 08 , the yield stress of er fluid could reach its maxium and the typical yield stress was over 8 . 3 kpa at only 2 kv / mm electric field , which was 3 . 2 times than that of mmt / cms er fluid . when the electric field was 3 kv / mm , the yield stress was over 12 . 0 kpa , which was 2 . 4 times than that of mmt / cms er fluid 当蒙脱土/甲酞胺/梭甲基淀粉的质量比为1 : 0一0 . 08 : 0 . 2时,复合颗粒电流变液的力学值随甲酞胺含量的增加而升高;当甲酞胺与蒙脱土的质量比为0 . 08时,在2kv / ~的电场作用下,其电流变液的屈服应力值达8 . 3kpa ,是相同条件下的蒙脱土/梭甲基淀粉电流变液力学值的3 . 2倍,而当电场强度为3kv / mm时,其电流变液的屈服应力值达12 . 0kpa ,是相同条件下蒙脱土/梭甲基淀粉电流变液力学值的2 . 4倍。
And contrasting the general method assigning the signals invoked inside the hall at the same condition , the method gets the satisfied control result . this builds solid basis for the lately work . , and provides the calculating example and the outlook towards following research work 通过对具有不同配置和客流交通模式的办公楼和住宅楼进行了梯群运行仿真,在相同条件下,与一般厅内召唤分配方法相比,采用本文所提出的电梯动态最佳方法能得到更短的平均候梯时间。
On the other hand , a set of if - then conditional rules is induced to examine the relationships among attributes values . the non - stationary model also applies to the association analysis , which means the anomaly value of an attribute a ssumes a novel value under certain conditions depends on the last occurrence of novel value of the same attribute under same conditions 本文还采用if - then形式的规则对所考察的多个属性进行关联分析,并对规则运用上述动态模型,即某一条件下某属性取得新值的异常值与相同条件下该属性上次取得新值以来的时间长度有关。
After designing oil ditches on the surface of its arc - block , increase friction factor and make sure self - lock which solves above problem . do qualitative analysis to lower pair and one - way overrunning clutch and inner star - wheel - roller overrunning clutch by using self - made lever loader . the experiment shows : on the same condition , the deformation of new overrunning clutch ’ s surface contact with lower pair is smaller than the deformation of roller overrunning clutch ’ s line contact with higher pair and new overrunning clutch ’ s skid angle is smaller 对低副单向超越离合器的部件进行了加工制造,在超越离合器弧块表面创新设计加工排油沟,增大摩擦系数,保证实现自锁,解决了很多离合器工作过程中容易出现无法自锁的问题;对低副单向超越离合器和内星轮滚柱超越离合器用自制杠杆加载器做了定性分析,实验表明:相同条件下,新型离合器低副面接触比滚柱离合器高副线接触变形小、溜滑角小。
From the measurements of cyclic voltammetry and galvanostatic charge / discharge , the composite electrode had higher specific capacitance ( 0 . 84f / cm2 ) than pure mwnt array electrode ( 0 . 38f / cm2 ) in the same experimental conditions . a kind of linear elementary carbon with the similar structure to carbyne was prepared by a new method . the sample appeared to be winding lines with the diameter of around 0 . 2 run in the magnified image of the high resolution transmission electron microscope ( hrtem ) 扫描电子显微镜表征结果显示,聚吡咯比较均匀地附于碳纳米管的表面;通过比较复合电极和纯mwnts阵列电极在相同条件下的循环伏安和恒电流充放电实验结果得知,前者的比电容( 0 . 84f / cm ~ 2 )明显高于后者( 0 . 38f / em ~ 2 ) 。