Results 121 to 130 of about 16,458 (194)
Sexuality, Gender &Policy, Volume 9, Issue 1, February 2026.ABSTRACT The purpose of this study is to determine the relationship between productivity and socioeconomic characteristics, as well as the degree to which job satisfaction and engagement can strengthen or moderate this association. With a focus on the mediating roles of job satisfaction and job engagement, this study examines the complex relationship ...
Abdullah Al Masud +6 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2018 肺动脉高压是一类以肺血管阻力进行性升高为特点的慢性、进展性的临床综合征,主要表现为右室负荷增加,右心扩张、右心衰竭甚至死亡,多预后不良[1],致残性和致死率较高,其血流动力学定义为:静息状态下平均肺动脉平均压≥25mmHg。主要病理特征为内皮细胞功能障碍、肺血管收缩 ...
范明明, 张捷
doaj
Dizhen xuebao强震条件下地形和岩体物理力学性质的差异会使边坡表现出不同的动力响应特性。为分析河谷岸坡坡度变化与浅表层介质波阻抗变化下的动力响应规律，设定左岸坡度为45°、右岸坡度分别为30°，45°和60°的直线型河谷岸坡模型，同时考虑六种浅表层波阻抗比n为1，1.5，2，2.5，3和3.5，基于离散元软件UDEC对河谷岸坡进行了动力分析。结果表明：① 浅表波阻抗层显著增强了边坡的动力响应，并在坡高1/4以上的坡面有较强体现；② 右岸坡度变化会引起左岸边坡动力响应差异 ...
Wanting Zhang +4 more
doaj +1 more source
高超声速再入飞行器气动特性的快速预示——局部方法的推广应用 [PDF]
, 1993 本文将计算高超声速稀薄气流过渡领域中气动特性的局部方法,推广应用到连续介质中弹头型高超声速再入飞行器气动力特性的快速估算。由激波风洞中M_∞=9.9时,一个8°钝锥的气动力测量结果,导出这一实验条件下的领域系数,并以此来估算不同锥角、不同钝度比及不同外形弹头型再入飞行器的气动力和力矩系数,其结果与无粘数值解及实验结果作了比较,在攻角2°～14°范围内吻合得很好 ...
沈青, 陈素贞, 马家驩
core
Design and hydrodynamic performance of 15 MW Spar-type floating offshore wind turbine platform [PDF]
ObjectivesA new Spar-type floating wind turbine platform design scheme is proposed for a 15 MW floating wind turbine, and its performance is analyzed. MethodsBased on potential flow theory, the frequency domain hydrodynamic calculation of the platform is
Kai ZHANG +5 more
core +1 more source
Genetic origins and climate‐induced erosion in economically important Asian walnuts
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract The global climate is undergoing unprecedented changes, posing significant threats to species persistence. However, the spatiotemporal impacts on genetic diversity remain poorly understood, hindering species conservation and management. Walnuts, generally referred to as Juglans regia and J. sigillata, are economically vital in Asia, but little
Peng‐Zhen Fan +17 more
wiley +1 more source
Experimental Study on Impact Damage Properties of the Sandy Clay Based on the Ultrasonic Detection Technology [PDF]
, 2012 不同损伤程度的岩土具有不同的声学特性和超声波声学参数，超声波速能综合反映岩土体结构动力特性和动力损伤，在土动力学和岩土工程中发挥着重要作用。本文基于土动力学与弹性波、弹性动力学理论，探讨了超声波在土体中的传播特性和超声波岩土损伤检测技术，并以超声波速作为冲击荷载作用下土体结构损伤演化的主要指标，分析土体冲击损伤特性，计算土体冲击损伤度，为揭示动荷载作用下土体动力损伤演化规律提供科学依据和定量参数。 论文以冲击荷载作用下土体损伤特性为研究主题，开展如下的试验研究： 1.基于超声波的声学特性 ...
周晓珍
core
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract In the era of the sixth mass extinction, reversing global biodiversity loss is of vital importance for life on Earth. In 2022, parties to the Convention on Biological Diversity (CBD) adopted the Kunming‐Montreal Global Biodiversity Framework (GBF), a strategic plan with 23 action‐oriented targets to be achieved by 2030.
Ina Lehmann +3 more
wiley +1 more source
, 2008 阐述了地震力作用下饱和砂土液化机理及其液化影响因素,分析了厦门地区砂土的地震反应特性;依据建筑抗震设计规范的规定,综合考虑各液化影响因素间的相关性,提出了符合厦门砂土动力特性的砂土地基液化防治措施;并以厦门麦德龙商场强夯法处理可液化砂土地基为例,采用动力触探试验和标准贯入试验分析检验了强夯法在砂土液化防治中的效果;结果表明防治措施效果良好 ...
俞登荣, 胡华
core
International Journal of Applied Linguistics, Volume 36, Issue 1, Page 522-539, February 2026.ABSTRACT This paper examines the features of metadiscourse across different teacher moves in university linguistics classroom discourse and the teaching strategies reflected in its use. The results reveal that teachers employ diverse metadiscourse during classroom interactions to support student reasoning.
Jingjie Li, Wenjie Hu
wiley +1 more source