Results 31 to 40 of about 547,301 (169)
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
Shiyou jixie, 2015 连续管应用越来越广泛，但是由于连续管管径小、流阻大等特点，系统性地研究连续管钻井系统摩阻压降已迫在眉睫。基于理论研究，筛选相关计算模型，得到了符合连续管钻井实际的摩阻计算模型；筛选了4种数值模拟计算模型，并进行多盘管规格和多流量的数值模拟计算，通过分析计算结果与理论计算的误差，采用标准κepsilon模型作为数值模拟计算模型更为合适。开展了连续管钻井系统盘管摩阻压降试验，将理论计算、数值模拟计算与试验数据进行比较，在绝大多数试验流量测点处，它们的误差范围均在10%以下 ...
周博 +5 more
doaj
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
wiley +1 more source
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
wiley +1 more source
Dianci bileiqi, 1992 陶瓷工业中耐火材料或制品的导热系数一般情况下随温度呈线性变化。本文从导热反问题出发,介绍了测定随温度线性变化的导热系数的数值计算方法,并进行了数值模拟。数值模拟结果表明:这种方法不失为一种有效的数值计算方法。
宛良德
doaj
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
doaj
Dizhen xuebao, 2021 采用数值方法合成地震动时，除对反应谱拟合外，对峰值位移的拟合和天然地震动非平稳特性的模拟也具有重要的意义和工程应用前景。本文基于小波函数的拟合方法，提出了一种能够同时合成目标反应谱和峰值位移的地震动加速度时程。数值算例表明：该方法具有较快的收敛速度，可用较少的迭代运算实现对目标反应谱和目标峰值位移的较高精度拟合；相较于现有的其它拟合方法，由于所构造的小波函数具有时域局部特点，该方法合成的地震动能够较好地保留天然地震动的非平稳特性。
Shan Wang +3 more
doaj +1 more source
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
wiley +1 more source
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
, 2001 利用自行开发的岩层破断过程分析系统 ,对承压水底板的失稳过程进行了数值模拟。根据模拟结果 ,分析了承压水底板失稳的机理 ,对承压水底板的突水部位进行了预测。通过与理论分析方法和实验的对比 ...
唐春安, 刘红元
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