Silane as Electrolyte Additives for Lithium Ion Batteries

1 Results In order to overcome the inherent incompatibility of PC with graphite in the lithium ion battery system, improve their electrochemical performance at low temperature,phenyl tris-2-methoxydiethoxy silane (PTMS) has been studied as an additive to the PC-based electrolyte of lithium ion batteries with graphite anode. From the cyclic voltammogram for the graphite anode in the PC-based electrolyte,we find that in the case of the electrolyte without the additive,there is a large irreversible peak ne...     

Effects of Hydrophilic Monomer Types and Level on Polystyrene-Acrylate/montmorillonite Nanocomposite Made by Emulsion Polymerization

1 Results Nanocomposite has attracted more and more interest all over the world.Polystyrene (PS) is a commercialized and mass-productive polymer,continuous research efforts have been devoted to the development of polystyrene/montmorillonite (PS/MMT) nanocomposites[1-2].But the polarity of styrene (St) is too small to intercalate the space between the clay layers.The polarity of hydrophilic monomer is so strong that it can intercalate the MMT easily,the intercalated smectic clays maybe exfoliated by usin...     

Performance of Ion-gel Actuator Containing Ionic Liquids

1 Results Electroactive polymers (EAPs) driven by transducing electric energy into mechanical energy have been the subjects of recent interest[1].“Ionic liquids“,consisting entirely of cation and anion,have characteristic features such as negligible volatility,non-flammability,thermal and chemical stability,and high ionic conductivity.We proposed an EAP actuator utilizing ion-gels[2-3],which consist of ionic liquids and polymers,sandwiching with two carbon material sheets as shown in Fig.1.This electrol...     

原子核液-气相变的实验观察

1IntroductionPhase transition and critical phenomenon are extensively debatable subjects in the natural sciences.Re-cently,the same concept was introduced into the astronomical objects[1]as well as the microscopic systems,such as in atomic cluster[2]and n…     

中朝板块北缘志留纪海岛的发现

在内蒙古达尔罕茂明安联合旗北部巴特敖包地区发现了志留纪的海岸带及其底栖无脊椎动物化石（层孔虫、日射与床板珊瑚等）,证实当时该地发育一个位于中朝古板块北缘大陆棚上的小海岛,将其命名为巴特岛．该岛的基部由奥陶纪火成岩组成,长、短轴分别为６１０和２００ｍ,现今呈北东－南西向延伸．志留纪罗德洛世（距今约４２０Ｍａ）的地层围绕该岛分布,产状向四周倾状．巴特岛的南缘（背风）发育皮壳状生物,栖息在火成岩顶面并被     

Decentralized Bezout Identity and a Parametrization of Decentralized Controllers for Singular Systems

1　 IntroductionConsider a singular decentralized control system of the formEx(t) =Ax(t) ∑Ni=1Biui(t)yi =Cix(t) ,i∈ N ={ 1 ,2 ,… ,N}(1 )where x(t)∈ Rn is the state vector,ui(t)∈ Rmi and yi(t)∈ Rpi are respectively the localcontrol input and measure outputvectors of the ith control channel.The matrix E may besingular,i.e.,rank(E) 相似文献   

Study on the Investment Behavior under Transaction Cost in Futures Market

1　IntroductionAfter10yearsdevelopment,thestockmarketsofchinaarewaitingtoseestock-indexfu-turesinthenewcentury.Itisofgreatimportantforbothsmallinvestorsandlargeinvest-menthousestoadjusttheirbehaviorincasetheyenterintomarketswithnewinstruments.Inrecentyears,speculatingwithfutureswasdiscussedinsomepapers[1～4],andtheresultsachievedroutinelyholdtheassumptionsasnotransactioncosts(TC),nodifferentbetweenborrowingandlandingrates,andalltradingprofitsbeingsubjecttothesametaxrate.Themainproblemisthatne…     

辣根过氧化物酶处理五氯酚过程的毒性特征

用酶的催化聚合作用来处理酚类及芳香胺类化合物的污染是近年来受到重视的新方法,但人们很少研究废水在这一处理过程中的毒性变化。采用辣根过氧化物酶和过氧化氢在ｐＨ值为４时处理含五氯酚的模拟废水,集中研究了该过程的发光菌毒性特性。结果表明,五氯酚溶液的毒性在处理后大为降低,总毒性可降低至起始毒性的１５％左右。处理过程的产物有少量溶解在水中,也构成一部分毒性。     

纤溶酶原激活因子和抑制因子在早期胎盘中的表达及其功能

用原位杂交方法研究了人早期胎盘中组织型（ｔ）和尿激酶型（ｕ）纤溶酶原激活因子（ＰＡ）与其相应的抑制因子１型（ＰＡＩ－１）和２型（ＰＡＩ－２）ｍＲＮＡ的分布。结果表明：（１）在绒毛和蜕膜的血管壁,Ｒｏｈｒｓ和Ｎｉｔａｂｕｃｈ纹间的蜕膜中的大部分外细胞滋养层细胞沿绒毛盘、基底盘、绒毛叶间隔和绒毛膜的细胞滋养层细胞以及蜕膜的腺体细胞中都检测到ｔＰＡ、ｕＰＡ、ＰＡＩ－１和ＰＡＩ－２ｍＲＮＡ;（２）在基底绒     

On the Collision Detection Problem of Two Moving Objects Described by Algebraic Sets

In this paper, the collision problem of two moving objects is investigated. The objects are described by two algebraic sets （ellipses or circles in the paper）. The collision problem discussed involves both static and dynamic case. The static case is that each object moves with known velocity. We use nonlinear programming to decide whether the objects collide. The dynamic case is that each object is controlled by a constraint external force which can be regulated online. For the dynamic case, the collision problem can be modelled as a Minmax problem which can be solved by using differential games. If collision occurs, the time and place of the first collision are given. The moving trajectories are provided in the paper.