七层KP_1型烧结页岩粉煤灰多孔砖房屋非线性地震响应分析

根据墙片抗震试验结果，运用非线性时程分析程序对一栋七层的烧结页岩粉煤灰多孔砖房屋进行了计算．计算结果表明该种砌体房屋具有良好的抗震性能．     

Autoresonant asymptotics in an oscillating system with weak dissipation

We study a system of two first-order differential equations arising in averaging nonlinear systems over fast single-frequency oscillations. We consider the situation where the original system contains weak dissipative terms. We construct the asymptotic form of a two-parameter solution with an unbounded increasing amplitude. This result gives a key for understanding autoresonance in weak dissipative systems as a phenomenon of significant increase in the forced nonlinear oscillation initiated by a small external pumping. __________ Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 160, No. 1, pp. 102–111, July, 2009.     

Synthesis and phase behavior of ω-(cholesteroxycarbonyloxy)-alkyl 3,3,5,5-tetramethyl-3,5-disila-4-oxacyclohexyl-carboxylate

Four new organosilane compounds containing cholesteryl group were synthesized by esterification of 3,3,5,5-tetramethyl-3,5-disila-4-oxa-cyclohexane-1-carboxylic acid and ω-hydroxyalkyl, cholesteryl carbonate in the presence of DCC and DMAP. Their structures were characterized by¹H-NMR, IR and elemental analysis. Their phase behaviors were investigated by differential scanning calorimetry (DSC) and polarized microscopy. Results showed that these four organosilane compounds were all liquid crystalline and longer spacer was advantageous to orientation of organosilane heterocycle and cholesteryl group. Biography: TANG Hong-Ding (1972-), male, Ph. D candidate, Research direction: orgenosilicon materials     

小学生拖延行为与父母教养方式的相关研究

采用自我修订的拖延调查量表和中文版EMBU对400名小学生进行测试,旨在研究小学生拖延行为与父母教养方式之间的关系。研究结果表明:(1)父母教养方式与小学生拖延行为存在显著相关;(2)父亲情感温暖、母亲情感温暖、父亲的惩罚和严厉、母亲的惩罚和严厉因子对小学生的拖延行为都有着非常显著的预测作用。     

Novel tetradentate diamine dioxime ligands: synthesis,characterization and in vivo behavior of their 99mTc‐complexes

Two novel diamine dioxime ligands, 4,7‐diaza‐3,8‐diethyldecane‐2,9‐dione bis oxime (3) and 4,9‐diaza‐3,10‐diethyldodecane‐2,11‐dione bis oxime (5), were synthesized in order to develop new brain perfusion imaging agents, based on ^99mTc(V)‐complexes. The synthesis involved condensation of 2‐hydroxyimino‐3‐pentanone with appropriate diamine in protic solvent which afforded the bis imine adducts. Subsequent reduction of imine functional groups yielded a diastereoisomeric mixture of 3 and 5. UV–visible, IR, ¹H NMR, ¹³C NMR and elemental analysis were used to characterize the structures of the synthesized compounds. ^99mTc‐complexes of both diamine dioximes were prepared and radiolabeling conditions optimized to give the maximum yield. Physicochemical parameters of the labeled complexes as well as and their biodistribution in rats were investigated. Both compounds (3 and 5) formed ^99mTc‐complexes with a net charge of zero, determined by electrophoresis. The resultant lipophilic ^99mTc‐complexes of 3 and 5 were readily formed at pH ~9.0 within 10 min at room temperature with yields of 90% and 95%, respectively. The ^99mTc‐3 complex was found to be stable within 1 h, while ^99mTc‐5 was stable for a few hours. A significant brain uptake of ^99mTc‐3 (2.1% injected dose) and ^99mTc‐5 (1.8% injected dose) complexes, 2 min after injection, is in accordance with their lipophilicity. The present study suggests that both ligands are promising candidates as new ^99mTc‐based brain‐imaging agents. Copyright © 2012 John Wiley & Sons, Ltd.     

非语言行为在高校图书馆服务中的作用

在图书馆服务中,馆员恰当地运用非语言行为,可创造良好的借阅环境,提高馆藏资源的利用率和读者对图书馆服务的满意度,能起到更好的服务育人的作用。从眼神、表情、姿势语和服饰等方面探讨了非语言行为在高校图书馆服务中的作用。     

契约伦理的价值理念

契约伦理是生态文明的重要应用伦理形态、实体伦理规律"现象"。契约伦理理念主要有理性、公平与自由。理性对"自然状态"展开伦理反省,选择契约作为避免"狼—狼状态"、走向"和平"相与之道的善的路径;公平要求契约制度设定权利义务对等原则并确定主客观衡平标准,它是经验世界的"希望"和"追求";自由表现为契约行为的自我主导性,以"人"为目的,属于"相对自由"。契约伦理理念能够引导契约实践,使行为主体在"契约生活态势"中坚守道德光明之路,促进社会和谐发展与中国伦理梦的实现。     

Evolution of groups with a hierarchical structure

The universal occurrence of a hierarchical structure and its dynamic behavior in various types of group, living or abstract, are discussed. Here the word “group” refers not only to tangible aggregation but also to invisible aggregation of social psychological and of geopolitical meaning. The evolution of these groups is simulated using a model of agents distributed on the lattices of cellular grids. It is assumed that agents, fearing isolation, interact asymmetrically with each other with regard to exchange of “power”. As an indicator of hierarchy, the Gini coefficient is introduced. Example calculations are made for the aggregation, fusion and fission of animal groups, and for the appearance of a powerful empire and the rise and fall of supremacy. It is shown that such abstract objects evolve with time in accordance with the universal rules of groups common to birds and fish.     

Nanoparticles as macromolecules

A review of recent trends in the dispersion, purification, and assembly of colloidal nanoparticles highlights a number of growing analogies with ideas borrowed from polymer science. Beyond the similar scales of size, several key concepts lying at the foundation of polymer physics—such as polydispersity, fractionation, phase ordering, and viscoelasticity—are taking on new and unique significance in the contemporary realm of nanotechnology. Leveraging “soft matter” at the nanoscale to simplify materials processing and improve material performance is becoming a reality, with potentially profound implications for a number of emerging technologies. © 2013 Wiley Periodicals, Inc. J Polym Sci Part B: Polym. Phys. 2013 , 51, 1195–1208     

Synthesis of MWCNTs‐core/thiophene polymer‐sheath composite nanocables by a cationic surfactant‐assisted chemical oxidative polymerization and their structural properties

Multi‐walled carbon nanotubes (MWCNTs)‐core/thiophene polymer‐sheath composite nanocables were synthesized by chemical oxidative polymerization of 3,4‐ethylenedioxythiophene (EDOT) with oxidant (FeCl₃) in the presence of cationic surfactant, deceyltrimethyl ammonium bromide (DTAB). In the polymerization process, DTAB surfactant molecules were adsorbed on the surface of MWCNTs and forms MWCNTs‐DTAB soft template. Upon the addition of EDOT and oxidant, the polymerization take place on the surface of MWCNTs and PEDOT is gradually deposited on the surface of MWCNTs. The resulting MWCNTs‐PEDOT nanocomposites have the nanocable structure. Nanocomposites were characterized by HRTEM, FE‐SEM, XRD, XPS, TGA, FTIR and PL, respectively. The π‐π interactions between PEDOT and MWCNTs enhancing the thermal and electrical properties of the nanocomposites with loading of MWCNTs. The temperature dependence conductivity measurements show that the conductivity of the nanocomposite decrease with a decrease of temperature, and conductivity‐temperature relationship is well fit by the quasi‐one dimensional variable range hopping mode. The mechanism for the formation of composite nanocables was explained on the basis of self‐ assembly of micelles. The reported self‐assembly strategy for the synthesis of PEDOT‐coated MWCNTs in micellar medium is a rapid, versatile, potentially scalable, stable, and making it useful for further exploitation in a varies types of applications. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 1477–1484, 2010