孔边距对凸凹模壁厚及材料的影响

通过悬架垫板等复合模的设计及使用的实例，说明了凸凹模壁厚小于手册上规定值时，只要结构设计合理、材料选取得当等，也能一次性完成落料冲孔工序．     

走出旅游客体概念中的误区

在我国旅游的研究和应用中，对旅游客体的分析始终存着一个错误的概念就是“旅游资源”，它还被错误地涵盖着专门为发展旅游事业而修建的旅游设施。其实，只要分清资源、产品、设施等概念的界定范围就不难看出它们的区别与关系。“旅游素材”这个较为科学的概念可以当作实践应用的专业词汇。     

汉语表现风格概论

语言表现风格是综合运用各种风格手段所形成的气氛和格调，是对一切言语交际的产物──话语的气氛和格调从多角度多侧面的抽象概括。表现风格有多组相互对立的类型，是处于最高层位的共性风格，它既可以用来概括语体风格、民族风格、对比风格、地域风格、流派风格和个人风格，而又存在于这各种风格的话语之中，任何话语都附着这样或那样的表现风格。表现风格的成因既有制导因素，也有物质因素。各种表现风格的生成都是有规律的。     

高炉风口小套设计的理论思考与建议

利用计算机风口烧损过程数模，对市场现有几种典型风口小套进行了简单剖析，提出了烧损风口小套的“铁水流股寿命”和“铁水流股破坏能力”的概念，分析了二者对风口烧损过程的作用机理及二者在实际高炉冶炼过程中的存在规律，在此基础上设计的折流式风口小套在数十个厂家的应用中取得了理想效果，为炼铁厂在不投资改造给水设备的条件下，设计低成本长寿风口提供了参考意见。     

不同基质生态条件对葡萄硬枝扦插的催根效应

锯末、素砂、砂壤等3种基质对葡萄硬枝扦插的催根效应是不同的锯末、素砂对插条的催根数分别比砂壤增加27％和23．9％，根的长度分别比砂壤增加34．8％和3．g％；根的粗度锯末比砂壤增加7．8％，素砂比砂壤减少9．5％；3种基质催根成活率分别为104)％，97％，94％锯末的保温性、相对含水量、通气性均优于素砂和砂壤，有利于葡萄硬技扦插催根。     

Study on the shock absorbing technique of high speed railway bridges

Based on the idea of "bearing function separation", a structural member called shock absorber that makes use of its plastic deformation is presented for reducing the seismic response of the bridge. The design criterion for matching material stress, strain and earthquake fortification aim, is also given. The analysis results show that the high speed railway box girder with the absorber in this paper has great reduction effect in seismic response of the bridge piers.     

WTO与我国建材行业发展的趋势——兼论建材行业人才需求的新变化

本文论述了我国进入世贸组织后,建材行业发展将遇到的机遇与挑战;预测了建材行业的发展趋势及人才需求动向;提出创办材料方面的新专业应充分考虑复合型人才的培养.     

多节状SiC晶须的合成及在矿冶工程材料中的应用

运用TEM、XRD等分析检测技术对SiCw的形貌结构、长度与直径分布及其应用于复合材料中的特性进行了检测。研究表明：SiCw产品以直晶为主，表面呈多节状，以-SiC为主要晶型，直径为0.2～1.5m,长度为30～200m。此外，作者对SiCw在矿冶工程材料中的应用进行了展望。     

Synthesis and characterization of bifunctional terbium complex-based nanoparticles

Novel bifunctional terbium complex-based nanoparticles were developed using a modified Stber method and a layer-by-layer assembly process. A magnetic core of Fe3O4 nanoparticles was coated with a silica shell to form the first layer. Then a ternary Tb3+ complex (TESPPA-Tb), which acted as a luminescent marker, was covalently bound to the silica surface by stable Si-O-Si bonds. The TESPPA monomer was synthesized by binding pyridine 2,6-dicarboxylic acid to 3-aminopropyltriethoxysilane, which was used as a ligand for coordination with the Tb3+ ions. An outer shell of silica was applied to the nanoparticles to allow for versatility with surface functionalization. The nanoparticles were characterized by X-ray powder diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, ultravioletvisible spectroscopy, vibration sample magnetometer, and photoluminescence spectroscopy. The bifunctional nanoparticles exhibited favorable superparamagnetic behavior and photoluminescence properties of Tb3+. These nanoparticles have potential applications in biolabeling, bioseparation, immunoassays, and pathogenic diagnosis.     

Synthesis of novel superhard materials under ultrahigh pressure

Superhard materials are solids whose Vickers hardness is beyond 40 GPa. They have wide applications in industry such as cutting and polishing tools, wear-resistant coatings. Most preparations of superhard materials are conducted under extreme pressure and temperature conditions, not only for scientific investigations, but also for the practical applications. In this paper, we would introduce the recent progress on the design and preparations of novel superhard materials, mainly on nanopolycrystalline diamond, B–C–N superhard solid solutions, and cubic-Si3N4/diamond nanocomposites prepared under ultrahigh pressure and high temperature（HPHT）, using multi-anvil apparatus based on the hinged-type cubic press. Bulk materials of all these superhard phases have been successfully synthesized and are systematically tested. We emphasize that ultra-HPHT method plays an important role in the scientific research and industrial production of superhard materials. It provides the driving forces for the light elements forming novel superhard phases as well as the way for sintering high-density nanosuperhard materials.