自然补偿热力管系在设备端点附近的有效限位方式

在有端点附加位移的自然补偿管系设计中,端点附近的限位方式对端点推力值有直接影响,为有效降低管道对设备的推力,利用管系自身热变形量来吸收端点附加线位移。本文探讨了端点附近的有效限位方式,并用通过实例计算对不同限位方式所产生的端点推力进行比较,以选择最有效的限位方式。     

“L”形与“Z形自然补偿在配管中的应用分析

通过利用CAESERⅡ法和图表法对热力管道的“L”形与“Z”形自然补偿进行分析对比,得出哪种补偿方法更优.     

低压无功补偿设备在大型封闭电炉上的应用

通过低压无功补偿设备在25 MWA大型封闭锰硅合金电炉上的应用,达到了提高电炉功率因数及产能,同时改善电炉各项经济技术指标的目的.     

韶钢二钢厂连铸设备存在的问题及整改意见

就目前二钢厂ROKOP连铸机现存在结晶器漏水、导向段结钢及变形、引锭杆变形及拉、拉矫机和振动台减速机易损坏和出坯长辊减速机损坏太多等几个主要设备问题进行原因分析，并提出强化管理、杜绝违章，提高维护、点检质量，依靠科技进步，改善设备技术性能等整改措施。     

PYY2207超重液压圆锥破碎机破碎力与破碎效果的分析

本文PYY2207超重液压圆锥破碎机是在梅山矿业公司原Φ2 200弹簧圆锥破碎机存在问题进行分析的基础上进行改进的设备,经对其破碎力进行研究,并对主轴强度进行校核,通过加大设计破碎力,增加破碎圆锥惯性力,提高实际破碎效果,达到改造的效果与目的。     

A test of the extended intergroup contact hypothesis: The mediating role of intergroup anxiety, perceived ingroup and outgroup norms, and inclusion of the outgroup in the self.

S. C. Wright, A. Aron, T. McLaughlin-Volpe, and S. A. Ropp (1997) proposed that the benefits associated with cross-group friendship might also stem from vicarious experiences of friendship. Extended contact was proposed to reduce prejudice by reducing intergroup anxiety, by generating perceptions of positive ingroup and outgroup norms regarding the other group, and through inclusion of the outgroup in the self. This article documents the first test of Wright et al.'s model, which used structural equation modeling among two independent samples in the context of South Asian-White relations in the United Kingdom. Supporting the model, all four variables mediated the relationship between extended contact and outgroup attitude, controlling for the effect of direct contact. A number of alternative models were ruled out, indicating that the four mediators operate concurrently rather than predicting one another. (PsycINFO Database Record (c) 2010 APA, all rights reserved)