稀土氟化物Y0.97Er0.03F3纳米材料的制备及上转换发光

通过燃烧法和控温热反应法制备了稀土氟化物纳米材料，利用XRD和TEM对样品进行了分析和表征。测量了发射波长为980nm激光二极管激发下所得纳米材料的上转换发光性质。     

走出科学教育的现代迷茫

科学与人文之争已历经上百年，在以知识为主导的新时代，科学教育倍爱世人的青睐。科学教育既是科学人才的产床，也是人性异化等扼杀人类文明、威胁人类生存的制造之所。科学教育必须走上与人文教育相结合的道路才能走出现代迷惘，并最终使科学真正带给人类以福祉而不是灾难。     

New polaron effect in magnetooptic phenomena in a quantum well

It is predicted that resonance coupling between two discrete electron energy levels corresponding to different size-quantization quantum numbers and different Landau quantum numbers can occur in a quantum well in a quantizing magnetic field. The resonance coupling is due to the interaction of an electron with LO phonons and results in the formation of polaron states of a new type. It is shown that for a certain value of the magnetic field, which depends on the splitting of the electron size-quantization levels, the absorption peak and the two-phonon resonance Raman scattering peak split into two components, the separation between which is determined by the electron-phonon coupling constant. The resonance coupling between size-quantization levels with the same Landau quantum numbers is also studied. The splitting of the peaks in this case is virtually independent of the magnetic field and can be observed in much weaker fields. The experimental observation of the effect will make it possible to determine the relative position of the electronic levels and the electron-phonon coupling constant. Pis’ma Zh. éksp. Teor. Fiz. 65, No. 7, 511–515 (10 April 1997)     

Preparing polymer brushes on polytetrafluoroethylene films by free radical polymerization

Films of polytetrafluoroethylene (PTFE) were exposed to sodium naphthalenide (Na/naphtha) etchant so as to defluorinate the surface for obtaining hydroxyl functionality. Surface-initiators were immobilized on the PTFE films by esterification of 4,4′-azobis(4-cyanopentanoic acid) (ACP) and the hydroxyl groups covalently linked to the surface. Grafting of polymer brushes on the PTFE films was carried out by the surface-initiated free radical polymerization. Homopolymers brushes of methyl methacrylate (MMA) were prepared by free radical polymerization from the azo-functionalized PTFE surface. The chemical composition and topography of the graft-functionalized PTFE surfaces were characterized by X-ray photoelectron spectroscopy (XPS), attenuated total reflectance (ATR) FT-IR spectroscopy and atomic force microscopy (AFM). Water contact angles on PTFE films were reduced by surface grafting of MMA.     

应力法剪切下料的剪刃形式和适宜参数问题

应力法剪切下料是精密下料方法同裂纹技术的应力断料原理相结合的产物。通过建立夹紧剪切过程中被剪棒料的应力状态方程,分析了被剪棒料同剪刃及夹紧块之间的挤压应力分布,通过挤压应力的分布形式探讨了合理的剪刃形状,进而通过实验研究确定了适宜的剪刃几何参数,为应力法剪切的应用提供了理论依据和适宜剪刃。     

关于高校文学理论课程教学的调查研究

针对目前高校文学理论课程存在的诸多问题，进行了调查问卷，初步了解了学生对文学理论课程的兴趣爱好、运用等情况，以及他们对教材编著、教师教学、理论与现实，多媒体使用等方面的看法。在此基础上，提出了对文学理论课程教学改革的若干意见。     

视频信息监控与处理--ATM视频监控系统下

针对银行ATM管理上的缺陷，提出了ATM视频监控系统，并就系统的功能及其信息处理与安全方面的特点作了论述。     

试述泰山碧霞元君演进的三个阶段

按照历史与逻辑相统一的方法，可将泰山碧霞元君的演化进程划分为三个阶段。最初，由曹操的名篇《气出唱》创造出泰山云霞仙境中的天仙玉女这一审芙意象，曹植、李白等诗人又不断加以描写、渲染，从而使泰山玉女在中固古代社会享有很高的知名度。然后，宋真宗为这位神女易玉像、砻石龛。引导泰山玉女从诗人的作品中走出，走进了香火缭绕的宫祠。最后。明宪宗修宫祠、赐颠名，其影响所度，使得明清时期的碧霞元君在京城及全国各地建庙，香火大盛，碧霞元君一名也沿用至今。与此同时，道士们一方面凭着斋醮科仪、住持焚修和承办庙套、营造节庆的狂欢气氛，对泰山玉女进行了卓有成效的炒作；另一方面凭着一片赤诚，兢兢业业，惨淡经营。博得了几代朝廷及地方官员对各种奉祭碧霞元君活动的赞赏和支持，这就使泰山碧霞元君成为中国道教的一大主神。     

Local-moment and itinerant antiferromagnetism in the heavy-fermion system Ce(Cu1−xNix)2Ge2

Elastic and inelastic neutron-scattering studies on the system Ce(Cu_1?xNi_x)₂Ge₂ are reported. These measurements are complemented by measurements of the magnetic susceptibility, high-field magnetization, heat capacity, thermal expansion, electrical resistivity and thermopower. The results reveal an interesting T-x phase diagram consisting of two different antiferromagnetic phases for x < 0.2 and 0.2 < x < 0.75, respectively, and a heavy-Fermi-liquid regime at higher Ni concentrations. The experimental results are interpreted in terms of an alloying-induced transition from local-moment to itinerant heavy-fermion magnetism. Fingerprints of this latter phase are a strongly reduced ordered moment and a short incommensurate ordering wave vector, in accord with theoretical predictions. A surprisingly good agreement between theory and experiment is found for x > 0.5. Further experimental evidence for different types of antiferromagnetic ordering derives from a line-shape analysis of the quasielastic neutron-scattering intensity, from magnetization and thermopower experiments.     

诚信教育:高校德育的一项重要内容

随着我国社会主义市场经济的不断完善、发展，诚信教育呼之欲出。新的社会环境下．诚信的内涵及其呈现出的新特点，要求教育应把诚信教育作为高校德育的重要内容并纳入其全过程，应有针对性、行之有效地开展诚信教育。