低成本铌钒复合微合金化抗震钢筋HRB400E生产实践

结合棒材生产线的工艺装备实际,进行了抗震钢筋HRB400E铌钒复合微合金化工艺研究与生产实践。通过控制加热温度及开轧温度提高铌的固溶度,轧后采用微穿水工艺加速铁素体相变并减少贝氏体产生,解决了含铌钢筋拉伸试验应力-应变曲线屈服平台不明显、市场接受度差的问题,同时避免了单纯采用铌微合金化钢筋大规格屈服强度不足的问题。铌钒复合微合金化抗震钢筋HRB400E符合国家标准质量要求,降低了合金成本,有利于抗震钢筋HRB400E的推广应用。     

Comparison of particle-phase polycyclic aromatic hydrocarbons and their variability causes in the ambient air in Ho Chi Minh City, Vietnam and in Osaka, Japan, during 2005-2006

A comparative study of polycyclic aromatic hydrocarbons (PAHs) associated with particulate matter (TSP) in the ambient air in an urban area in Ho Chi Minh City, Vietnam and in Osaka, Japan was carried out from 2005 to 2006. The objective of this study was to investigate the environmental levels, emission sources, seasonal variations and health risk of eleven PAHs in the two cities, especially Ho Chi Minh City where air pollution is becoming a serious concern. The results showed that the concentrations of TSP and total PAHs were significantly higher in Ho Chi Minh City than levels in Osaka. The concentrations of 5- and 6-ring PAHs (BeP, BbF, BkF, BaP, BghiP and InP) were much higher in TSP samples in Ho Chi Minh City than in Osaka, accounting for 82% and 51% of total PAHs, respectively. These PAHs are known to be highly carcinogenic and mutagenic in humans. Vehicular emission is suggested as one of the main pollution sources of PAHs in both cities. Motorcycles and gasoline automobiles are suggested as the main emission sources of PAHs in Ho Chi Minh City, whereas diesel automobiles are the primary source in Osaka. Seasonal variations of PAHs were observed in this study; higher concentrations of PAHs were found in the rainy season (May-December) and lower concentrations corresponded to the dry season (February-April) in Ho Chi Minh City, while higher concentrations of PAHs were observed in the winter (November-January) in Osaka. The number of sunshine hours was an important meteorological factor affecting seasonal variations of PAHs in Ho Chi Minh City, while the temperature was a main factor causing the variations of PAHs in Osaka. The high BaP equivalent concentration of 5- and 6-ring PAHs even in the ambient air is an alarming signal for harmfulness to human health and environmental quality in Ho Chi Minh City.     

夯扩挤密水泥土侧向围箍桩的设计与计算

湿陷性黄土在荷载作用下，产生竖向湿陷变形的同时还伴随大量的侧向挤出变形，侧向挤出水平位移体积占湿陷变形体积50％以上，应用围箍加固，限制侧向挤出，可有效提高地基承载力。通过工程实例，说明了采用夯扩挤密水泥土侧向围箍桩加固地基，其桩长、桩径、桩间距的确定及加固效果。     

砖混结构外保温复合夹心墙体节能住宅施工方法

ＣＯＮＳＴＲＵＣＴＩＯＮＭＥＴＨＯＤＯＦＥＮＥＲＧＹ－ＳＡＶＩＮＧＲＥＳＩＤＥＮＴＩＡＬＨＯＵＳＥＳＢＵＩＬＴＯＦＣＯＭＰＯＳＩＴＥＢＲＩＣＫ－ＣＯＮＣＲＥＴＥＳＴＲＵＣＴＵＲＥＳＷＩＴＨＣＯＭＰＯＳＩＴＥＨＥＡＴ－ＲＥＴＡＩＮＩＮＧＳＡＮＤＷＩＣＨ...     

燃煤电厂污染控制设备脱汞效果及汞排放特性试验

为了解燃煤电厂汞的排放规律以及现有的污染控制设备对烟气中汞的协同脱除效果,采用安大略法对江西省内4台机组进行汞排放及控制试验研究,得到现阶段燃煤电厂配置条件下汞的排放特性。研究结果表明:未投入汞氧化剂的机组污染控制设备协同脱汞效率在69.01%~75.63%,投入汞氧化剂的机组脱汞效率可达89.69%;SCR脱硝装置对烟气总汞的减排效果不明显,但能促使Hg0成为易于脱除的Hg~(2+)和颗粒态汞,机组投入汞氧化剂后可大幅提高Hg~0氧化为Hg~(2+)的比率;除尘器可以脱除全部的颗粒态汞,其协同脱汞效率平均值为24.37%;湿式脱硫系统对Hg~(2+)的脱除效率为88.39%;烟气经过脱硝、除尘、湿式脱硫装置后,最终排放气体中汞的质量浓度在3.91~8.89μg/m~3,远小于国家排放标准限值。     

王朝成 白酒拐点论 背后的故事

曾有人对记者说：“王朝成说的话，总是让人高兴不起来。” 在记者看来，这位仁兄的言下之意是王朝成不仅牙尖嘴利，还偏能说准——无论是他发表于2012年的白酒行业拐点论，抑或是关于小酒、电商的论调，都已经或正在一语成谶。     

大米：我不是外方，也不是中方，我是“水井方”

一边是中国的员工、客户、广大的消费者，一边是以老外为主的董事会成员，对于外资间接控股企业的水井坊来说，太需要一座桥梁把这两边顺利地连接和沟通起来。过去，帝亚吉欧方面希望这座桥梁是柯明思．现在帝亚吉欧的这座桥梁是James Rice——一个在中国工作和生活了25年的美国人，对中国的熟悉程度甚至超过美国．     

2014年，茅台的五大看点

成都春季糖酒会期间，贵州茅台发布了其2013年年报，数据显示，茅台2013年完成主营业务收入309．22亿元，同比增长16．88％，净利润为151．37亿元，同比增长13．74％，成为迄今为止发布2013年年报的白酒上市公司中，唯一营收和净利润保持两位数增长的企业。茅台的企业实力和品牌张力可见一斑。     

论儿童游戏思维在平面设计中的应用

受儿童游戏思维的启示,分析得出儿童游戏思维与平面设计思维方式之间的共性。在此基础上,阐述了儿童游戏思维的想象精神、涂鸦精神、角色置换3方面的特征,并结合平面设计中相关的实际案例,提出儿童游戏思维在平面设计中应用的可行性。旨在为深入认识和探索复杂的设计思维领域开辟一个新的角度,为平面设计的发展与创新另辟新径。