Results 81 to 90 of about 38,010 (204)
Gaoya dianqi, 2014 结合设计制造薄板结构弹簧操动机构的实践经验,论述了薄板结构弹簧操动机构设计制造中有效的结构优化方法,并提供了一些具体应用案例。简单的结构优化方法,可以达到较为理想的设计和应用目的,能够有效促进薄板结构在弹簧操动机构中的应用。
吴小钊 +4 more
doaj
Dizhen xuebao采用间接边界元法，结合Biot饱和多孔介质理论，建立了层状饱和场地中二维建筑群模型，其中上部结构采用多质点模拟，基础采用刚性方形基础模拟，进而研究了场地-建筑群动力相互作用对结构动力响应的影响。数值分析表明，场地-建筑群效应可能显著改变结构动力响应，即使结构参数相同，建筑群中不同位置结构的动力响应也可能存在显著差异。相较于仅考虑场地-单体结构动力相互作用的结果，场地-建筑群效应可能减小或增大结构位移响应峰值，这与结构之间距离、结构动力特性、场地特性等因素相关。本文算例中场地 ...
Hai Zhang +5 more
doaj +1 more source
Equine Veterinary Journal, Volume 58, Issue 6, Page 1627-1635, November 2026.Abstract Background The middle conchal sinus (MCS) (ethmoidal sinus) remains one of the least understood equine paranasal compartments. Despite recognition of its involvement in sinonasal disease, disorders of the MCS often remain underdiagnosed in the absence of computed tomographic (CT) imaging due to limited anatomical understanding and challenges ...
J.‐B. Pavard +3 more
wiley +1 more source
First, He Was Adam, and Then, She Was Eve
Sexuality, Gender &Policy, Volume 9, Issue 4, November 2026.ABSTRACT Trans* is an umbrella term that is used to describe people who identify with a gender that is different from their assigned sex at birth. There has been a marked increase in young people presenting to child and adolescent mental health services due to a lack of specialist gender clinics in the United Kingdom.
Corey Hartley +2 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan开口索穹顶结构是一类新型索穹顶结构，目前其工程应用实例较少，导致结构的抗倒塌性能尚不明确。文中设计了一组大跨度开口索穹顶结构，并对其进行了连续倒塌非线性动力分析，研究不同类型单根索杆破断时结构的抗倒塌能力，以及初始预应力、开口大小等参数对索穹顶结构连续倒塌性能的影响。计算结果表明：外环索是开口索穹顶结构抗连续倒塌的关键传力杆件；对于不同参数的开口索穹顶结构，单根外环索破断，节点的最大竖向位移多为结构跨度的1/14左右，最大可达结构跨度的1/11，结构会发生较大范围的局部倒塌；在索结构体系中 ...
张微敬, 李鹏伟, 李永梅
doaj
Jianzhu Gangjiegou Jinzhan, 2019 长沙世茂广场塔楼地上75层,地下4层,建筑总高度为348.30m,结构高度为335.30m,采用钢管混凝土框架+钢筋混凝土核心筒+伸臂桁架+环带桁架的混合双重抗侧力结构体系。首先介绍了结构的超限情况及抗震性能目标,结构为超限高层建筑,且存在6项一般不规则项,采用C级抗震性能目标。其次介绍了结构在小震、中震及大震下的分析情况,结构构件在多遇地震下均处于弹性工作状态,可保证小震不坏;通过对结构进行中震弹性和中震不屈服计算,表明结构可实现预设的中震性能目标;结构在罕遇地震作用下整体受力性能良好 ...
桂堃
doaj
Sexuality, Gender &Policy, Volume 9, Issue 4, November 2026.ABSTRACT The experiences of LGBTQIA+ students with disabilities may differ from those of peers who hold only one of these identities. In Greece, however, the educational system lacks clear guidelines for supporting this group. This study investigates LGBTQIA+ students' school experiences with the aim of formulating evidence‐based policy recommendations
Konstantinos Drosos +2 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2015 <正>2015年11月20日-21日中国厦门主办单位:中国钢结构协会防火与防腐分会中国建筑学会抗震防灾分会结构抗火专业委员会同济大学华侨大学福建省公安消防总队协办单位:华侨大学土木工程学院福建省结构工程与防灾重点实验室厦门市抗火综合防灾工程技术研究中心会议主题:材料高温特性;结构抗火试验;结构抗火分析;结构抗火设计;结构火灾实例;结构防火材料 ...
doaj
Jianzhu Gangjiegou Jinzhan, 2010 本文采用基于B-R运动准则改进的动力稳定判别方法,结合结构的时程响应曲线,采用有限元软件ANSYS分别研究了El-Centro波、Taft波和天津波作用下不同矢跨比弦支穹顶结构的动力稳定性能和稳定形态,并作了比较。研究表明3种地震作用下,结构失稳形态均是非对称的;无论何种地震波下,结构的矢跨比越大,结构的稳定性越强;对于同一种矢跨比结构,El-Centro波作用下的结构动力稳定临界值最大,结构动力稳定性最好;天津波作用下的结构动力稳定临界值最小,结构动力稳定性最差。由此可见 ...
刘慧娟 +3 more
doaj
World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT This study explores environmental justice issues in coastal food systems, focusing on conflicts between small‐scale fisheries and the energy sector due to differing goals in managing food and energy sources. It does so by examining the interdependence between institutions, policies, and different types of knowledge; key elements in building ...
Mateus Henrique Amaral +6 more
wiley +1 more source