聚合物的冷冻介电谱

用冷冻介电谱方法将聚合物在液氮温度下冷冻下来的驻极体效应的不同微观机构分开,得到一个快极化和三个偶极取向慢极化成份。     

聚合物的冷冻介电谱

用冷冻介电谱方法将聚合物在液氮温度下冷冻下来的驻极体效应的不同微观机构分开,得到一个快极化和三个偶极取向慢极化成份。     

圆盘式电流变传动机构的优化设计

讨论圆盘式电流变传动机构的优化设计，它涉及机构的动态品质、电流变流体的物理性能和装置的结构参数，并给出圆盘直径、剪切速度、极化力和粘性力之间的关系。     

电流变效应极化过程的光学特性研究

给出用非线性光学技术研究电流变效应建立的瞬态过程极化机制的方法;测定了硅藻土电流交流体的SHG信号及其时间响应,发现该信号主要源于流体的界面极化。认为粒子极化和界面极化在电流变效应建立的瞬态过程的不同时段有不同的贡献。     

苯和石蜡的冷冻介电谱

本文研究了苯和石蜡的慢极化响应过程,发现在接近各自的高温极化温度前谱线均发生分裂。研究了石蜡的两个冷冻放电过程中束缚电荷引起的活化能与温度的关系,发现温度增加,石蜡的束缚电荷能级势垒降低,极化成份增加,量增大。慢极化电荷对两种冷冻方法表现出不同的温度关系。     

苯和石蜡的冷冻介电谱

本文研究了苯和石蜡的慢极化响应过程，发现在接近各自的高温极化温度前谱线均发生分裂。研究了石蜡的两个冷冻放电过程中束缚电荷引起的活化能与温度的关系，发现温度增加，石蜡的束缚电荷能级势垒降低，极化成份增加，量增大。慢极化电荷对两种冷冻方法表现出不同的温度关系。     

电流变液交变强场下介电性质的研究

测试了NaY沸石电流变液交变强场下相对介电常数、交流损耗角随频率的变化关系,证实了电流变液非线性极化的存在。     

电絮凝技术在废水处理中的应用

介绍了电絮凝法处理废水的作用机理,并阐述了近年来电絮凝技术在各种废水处理方面的应用以及应用的局限性.针对能耗及电极极化钝化问题,通过改进电源技术、应用新型电极材料与结构、改进电解槽构型,以进一步提高处理效率,降低能耗是这项技术的发展方向.     

电—声相互作用对金属氢磁性的影响

本文运用Hirsch的自旋—极化铁磁理论，并考虑了电—声相互作用对单中心、双中心以及电子有效质量的修正后，讨论了金属氢在T=0K时的自发磁化强度随晶体的Wigner-Seitz半径rs的变化。结果指出：金属氢的自发磁化强度ms≠0的区域随参数ρ的增大而收缩，但ms的值不一定比未考虑电—声相互作用时的值小。     

适用于GNSS—R极化研究的不同极化的Bi—mimics模型

GNSS—R是一种新兴的遥感监测手段．机理属于双站雷达．本文以植被双站散射模型Bi-mimics为研究基础,利用一阶全极化变换矩阵,通过对归一化Stokes矢量的修改,得到了不同极化下的植被双站散射模型Bi—mimics模型．导航卫星群发射的为右旋圆极化信号RHCP,经地表翻转后,信号极性发生改变,进行陆面遥感监测时,接收机天线的极性是目前存在的一个研究问题．极化信号的有效利用,会为GNSS—R遥感提供新的研究信息．本文在理论上得到了不同极化的植被双站散射模型,使其可以成为GNSS-R不同极化下植被遥感或者植被覆盖下土壤水分遥感的理论研究工具．     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.