T_(202)铁钼催化剂升温硫化

干法脱硫中铁钼催化剂将有机硫转化成H2S,再经氧化锰和氧化锌脱硫槽吸收H2S,每次升温硫化时间3～4 d.     

钱塘江五桥T型梁预应力施工

本文主要介绍了T型梁钢绞线张拉的施工工艺和灌浆的技术措施及注意事项。     

一类改进的HIV病理模型的全局稳定性

将治愈率引入经典的HIV病理模型,构建一个改进的HIV病理模型.证明了改进模型中无病平衡点的全局稳定性,给出染病平衡点全局稳定性的参数域,并进行了相关的数值模拟,进而发现当染病平衡点不稳定时模型存在周期解.研究结果表明:提高治愈率是有效控制HIV感染的重要途径.     

双筋T形梁正截面承载力计算与设计

当T形梁受压区高度大于单筋T形截面适筋梁的最大受压区高度,在梁的截面尺寸受到限制时,可按双筋T形截面梁进行设计。双筋T形截面梁的设计方法在高等教育教科书中并未深入阐述,但其在实际工程中的应用十分广泛,故笔者归纳了双筋T形截面梁的设计计算方法。     

预应力T梁裂缝的主要原因及预防措施

本文针对国道109线昆独龙大桥工程40m预应力T梁施工过程中产生的裂缝,对该桥位区T梁施工中产生裂缝的主要原因进行分析,并提出有效的预防措施。     

NetEngine 40E/80E全业务路由器:我国第一款自主知识产权系列化芯片

一年一度的全省科技盛会--广东省科学技术奖励大会暨国家技术创新工程广东试点工作动员大会已胜利闭幕。科技奖励大会是对我省高校、科研院所、企业科技成果的巡视,更是我省自主创新力量的展示。近年来,广东企业创新能力指标一直位居全国前列。在本年度的271项科技奖获奖成果中,由企业独立承担或参与完成的项目占获奖项目数的59.4%,比上年提升了10.8个百分点。这些获奖项目涵盖了新材料、新能源、电子信息、生物医药和装备制造业等领域,累计新增利润227.6亿元,新增税收47.2亿元,创汇68.6亿美元,创造了良好的经济效益,这些成果为企业提升核心竞争力提供了重要的科技支撑。在29项一等奖成果中,企业与高等院校和科研院所开展产学研合作完成的项目达15项,这些项目共获得专利授权77项,累计新增利润13.5亿元,新增税收8.86亿元,创汇1.86亿美元。这充分体现了广东在全国率先启动的省、部联合推进产学研结合试点工作,加速了科研成果向生产力的直接转换。本刊特汇编2009年度广东省科学技术奖一等奖项目,分三期刊登在"广东科研"栏目,以飨读者。     

大温差、强风沙气候条件下蒸汽养生在预制T梁中的应用

本文通过对T梁冬季施工详细阐述冬季施工准备工作、预制T梁蒸汽养生的技术措施和施工方案,对北方气温低、温差大、风沙大、冬季施工时间长的施工特点、方案进行了总结。     

Sequence similarity analysis of non-self CTL epitopes and mouse proteins using sequence alignment

This research analyzed amino acid sequence similarity between non-self T cell epitopes recognized by mouse antibodies and mouse proteins. Using sequence alignment,we found that only 8 of 1 108 epitopes are highly similar to mouse protein sequences. The result shows that non-self T cell epitopes are not similar or have little similarity to mouse protein sequences. Furthermore,reviewing the related literature,we also found that the eight epitopes would trigger immune responses in some particular environment,which are ignored by T cells in normal condition. The result suggests that no or low-similarity peptide vaccines can reduce the chance of collateral cross-reactions and enhance the antigen-specific immune response to vaccine.     

公路梁式桥支座垫石设计

箱形梁、空心板梁是目前公路桥梁,特别是城市道路桥梁广泛应用的一种梁形,保证该种梁形四个支座处于一个平面上,支座垫石常出现的问题及设计方法。     

Microstructure evolution of T91 heat-resistant steels after long-time aging

To investigate the evolution of microstructure damage degree and the precipitated phases of heat-resistant metal in power plant under high temperature and stress environment, the high-temperature aging tests were conducted to investigate the aging behavior of T91 steel at different temperatures and stress. The optical microscopy, scanning electron microscopy, and transmission electron microscopy were used to investigate the structure and precipitated phases, the results showed that the orientation characteristics of tempered martensite was dispersed, and the grain size is obviously increased. The density of dislocation decreased with increasing temperature and stress. The important strengthening phase of M23C6 (M=Fe, Cr) was coarsened by the diffusion of main alloying elements Cr, while the smaller size MX (M=Nb,V; X=C, N) phase distributed in the grain is relatively stable in the aging.