2.0L汽油发动机缸盖低压铸造的工艺研究

通过消化吸收日本本田的生产技术和经验,应用先进的低压铸造生产工艺,自主开发2.0L汽油发动机缸盖,实现产业化生产,配套国内自主品牌汽车的高性能发动机使用.     

菊糖的提取、性质和应用

概述了菊芋中菊糖的性质、提取、功能作用以及在食品中的应用。     

The corrosion of PEM fuel cell catalyst supports and its implications for developing durable catalysts

Studying the corrosion behavior of catalyst support materials is significant for understanding the degradation of polymer electrolyte membrane (PEM) fuel cell performance and developing durable electrocatalysts. The oxidation of Vulcan carbon black (the most widely used catalyst support for PEM fuel cells) was investigated using various electrochemical stressing methods (fixed-potential holding vs. potential-step cycling), among which the potential-step cycling was considered to mimic more closely the real drive-cycle operation of vehicle PEM fuel cells. The oxidation of carbon was accelerated under potential-step conditions as compared with the fixed-potential holding condition. Increasing the potential-step frequency or decreasing the lower potential limit in the potential-step can further accelerate the corrosion of carbon. The accelerated corrosion of carbon black was tentatively attributed to the cycle of consumption/regeneration of some easily oxidized species. These findings are being employed to develop a test protocol for fast-screening durable catalyst support.     

“地基基础”试题库系统的建设与使用

介绍了“土力学与基础工程”考试出题系统的特点、使用方法以及建设过程，它具有灵活、适应性强、可人机对话等功能，是学科建设向电子计算机系统化迈出的坚实一步．     

Novel Delay-Dependent Stability Results for Neural Networks with Time-Varying Delays

This paper is concerned with the stability of static neural networks with time-varying delays. With the construction of a new Lyapunov functional and advanced techniques for calculating its derivative, a delay-dependent stability criterion is obtained that is less conservative than existing ones. A delay-independent criterion is also given that, together with the delay-dependent one, can be checked using recently developed algorithms. Examples are provided to illustrate the effectiveness and the reduced conservatism of the proposed results.     

安得广厦千万间——以我国住房政策改革为线索谈谈建筑与社会的关系

在我国社会主义建设的初级阶段，受经济发展程度和福利水平的限制，以及人口增长较快、城市化进程加速的影响，住房矛盾普遍比较突出，特别是低收入阶层的住房短缺问题相当严重。随着我国住房体制改革的不断深入，城市居民的住房不再是单一的福利分房，形成了以市场经济为主体国家宏观调控为辅的商品房市场与保障房市场的住房市场，从而导致了从住房体制到住房类型的多样化以及分配方式的多样化，形成了按照城市居民的购买力为引导的以商品房市场为主体，经济适用房为中低收入者保障的多层次房地产市场体系，随着我国市场经济的不断深化与分配制度的不断多样化，我国政府对于房地产市场的调控政策也在做着相应的调整，以适应房地产市场的良性发展。     

高密度聚乙烯的研究及应用

综述了近年来我国高密度聚乙烯(HDPE)的最新研究现状,并介绍了高密度聚乙烯的特点及其应用,最后指出了我国高密度聚乙烯的发展方向。     

面包涂抹用蒜酱的研制

本文简要介绍了大蒜的脱臭方法，研究了蒜酱的食用特点，涂抹性及生产工艺和配方，并制定了蒜酱的感官指标。