Results 41 to 50 of about 707,699 (138)
Experimental methods for wind tunnel studies of seed dispersal by wind
Applications in Plant Sciences, Volume 14, Issue 1, January-February 2026.Abstract The complexity and variability of natural environments make quantitative studies of seed wind dispersal challenging. Wind tunnel experiments offer a controlled alternative to investigate the mechanisms of seed wind dispersal. This review focuses on wind tunnels and the associated technologies used for studying seed wind dispersal, including ...
Liang Tian +5 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2017 为了考察材料本构模型参数对构件滞回性能模拟的影响,利用通用有限元软件ABAQUS对H形截面钢构件绕强轴压弯的滞回特性进行了数值模拟研究,对比分析了Ramberg-Osgood模型应变硬化指数和两折线模型强化率的参数取值对低周往复荷载作用下构件的极限抗弯承载力、极限后性能模拟结果的影响。分析表明,在所研究的材料强化参数变化范围内,构件极限抗弯承载力的相应变化是有限的;但构件的残余位移、耗能能力等大范围塑性变形阶段的模拟结果对两类材料模型强化参数均表现出很强的敏感性。基于以上分析结果 ...
张婉越, 陈以一
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Deep quantile regression for growth and maturation reaction norms
Methods in Ecology and Evolution, Volume 17, Issue 1, Page 111-124, January 2026.Abstract Understanding species' growth and maturation responses to anthropogenic and environmental pressures is crucial for tracking demographic shifts, phenotypic change and ensuring population sustainability. Traditional regression methods often focus on modelling the conditional mean of life‐history traits, potentially overlooking heterogeneity in ...
Guankui Liu +4 more
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Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 4, Page 433-442, October 2025.ABSTRACT Objective Currently, there are several surgical approaches to manage fetal open spina bifida (OSB), namely postnatal surgical repair, open fetal surgery and its minimally invasive alternative, fetoscopic repair. Our objective was to determine the optimal surgical approach for OSB, weighing the benefits and risks to the fetus and the pregnant ...
Y. Kunpalin +6 more
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, 1997 根据流固耦合的基本思想，将渗流力学与岩土力学相结合，阐述了流固耦合油藏数值模拟的基本原理及其实现过程；将油藏开来过程中的物性参数视为应力与温度的函数，并根据体积应变的概念，导出了流固耦合油藏数值模拟求解所需的孔隙度、孔隙压缩系数及渗透率等物性参数动态变化的理论计算模型，为实现流固耦合油藏数值模拟提供了有效的途径。最后，利用导出的模型进行了实例计算，结果证明在油藏开采过程中流固耦合效应强烈，对物性参数有很大的影响，并最终影响油藏的开采动态 ...
李士伦, 冉启全
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Jianzhu Gangjiegou Jinzhan, 2022 在钢制波纹管廊在一般场地的振动台缩尺模型试验研究基础上，基于ABAQUS利用时程分析法分析预制装配式钢制波纹管廊的抗震性能，并与振动台模型试验结果进行对比。数值模拟和试验结果加速度时程吻合较好，加速度放大系数及其傅里叶幅值谱规律一致，验证了有限元模型的合理性。利用验证合理的数值模型，通过改变埋深、场地条件、地震方向等参数，对管廊和土之间相互作用的机理进行了参数分析；结合国内外规范抗震设计方法，利用振动台试验和数值模拟结果，提出了考虑土-钢相互作用的钢制波纹管廊抗震计算方法并给出了算例。
岳峰 +5 more
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Veterinary Dermatology, Volume 36, Issue 5, Page 638-646, October 2025.Background – Besides pruritus and skin lesions, cats with feline atopic skin syndrome (FASS) may have seborrhoea. Hypothesis/Objectives – The aim of this pilot study was to investigate whether an adsorbent mousse containing tapioca starch, adelmidrol and a nonpharmacological antimicrobial complex could decrease FASS‐associated seborrhoea in cats ...
Chiara Noli +4 more
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Integrative Conservation, Volume 4, Issue 3, Page 362-380, September 2025.Occurrences of dust storms and long‐distance movement of dust across landscapes is constantly increasing in south Asia. This dust is expected to have profound impact on vegetation health and sustainability as dust may contribute to nutrient budgets of the forest ecosystems, while it could impart various stresses to the plants.
Shree P. Pandey +2 more
wiley +1 more source
Shuitu Baochi Xuebao, 2016 为探讨同时率定CN值和初损率2个参数得到的模拟结果是否比单独率定一个参数更为理想，且在不同土地利用类型下SCS-CN模型是否均适用，选取了密云水库上游石匣小流域为研究区域，根据石匣小流域坡面试验小区2006—2010年实测降雨-径流数据和SCS-CN模型的计算公式，在0.05～0.40范围内，等间隔选取8个不同的初损率值，并利用算术平均值法反推各初损率值条件下对应的CN值，以纳什效率系数为SCS-CN模型的适用性评价参数，确定裸地、耕地、草地和林地4种不同土地利用类型下模拟最佳的CN值与初损率 ...
何杨洋, 王晓燕, 段淑怀
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Jianzhu Gangjiegou Jinzhan, 2022 为研究高强方钢管高强混凝土偏压长柱力学性能，基于已有的偏压试验研究，进一步分析了偏压柱破坏形态、荷载-挠度曲线、弯矩-曲率曲线和应变发展规律，探讨了偏心率与长细比对构件塑性发展等力学性能的影响。结合ABAQUS数值模拟研究了不同偏心率的偏压柱工作机理，并由此进一步分析了材料性能参数与构件几何参数对偏压柱的受力性能影响。基于试验与数值模拟，采用《钢管混凝土结构技术规范》（GB 50936—2014）和人工神经网络模型对68个试件的极限荷载Pu及其弯矩Mp值进行预测。结果表明，《钢管混凝土结构技术规范 ...
李帼昌 +5 more
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