Results 21 to 30 of about 387 (105)
Turbulence structure in Circular and Annulus Ducts(II) : Organized Structure of Fluctuation Component [PDF]
, 1989 In previous paper, experimental studies were reported to examine the turbulence structure in circular and annulus ducts in turbulent flow region.The behaviour of velocity profile, the turbulence intensity and Reynolds stress were measured by using 2 ...
宮下 尚, 柴田 良弘, 西村 龍夫
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Finding floral and faunal species richness optima among active fire regimes
Conservation Biology, Volume 39, Issue 6, December 2025.Abstract Changing fire regimes have important implications for biodiversity and challenge traditional conservation approaches that rely on historical conditions as proxies for ecological integrity. This historical‐centric approach becomes increasingly tenuous under climate change, necessitating direct tests of environmental impacts on biodiversity.
Zachary L. Steel +8 more
wiley +1 more source
Infant Mental Health Journal: Infancy and Early Childhood, Volume 46, Issue 6, Page 870-885, November 2025.Abstract Profiles of parental reflective functioning (PRF) may offer valuable insights into individual differences in PRF. Previous studies have identified PRF profiles; however, further validation is needed. This study aimed to investigate the convergent validity of the identified PRF profiles by examining their association with a related measure of ...
Eva Back Madsen +6 more
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Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 2, Page 135-146, August 2025.ABSTRACT Objective To derive pooled estimates of maternal, fetal and pediatric outcomes up to the age of 30 months in patients undergoing pre‐ or postnatal surgery for open spina bifida (OSB). Methods A systematic search was conducted in MEDLINE, PubMed (non‐MEDLINE records), Embase, Web of Science, ClinicalTrials.gov, Cochrane Central Register of ...
Y. Kunpalin +10 more
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Effect of Lifting of Top Foil and Its Mounting Style on Predicted Maximum Load Carrying Capacity of Bump Foil Journal Bearings [PDF]
, 2009 A bump foil journal bearing is a prospective applicant that can support a small-sized rotor of high-speed rotary machinery. However, a theoretical model that can make a reasonable prediction of the bearing performance has not been developed.
生島 大喜, 畠中 清史
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Does donor country impact the efficacy of health aid?: Evidence from the COVID‐19 pandemic
World Medical &Health Policy, Volume 17, Issue 1, Page 31-48, March 2025.Abstract During the coronavirus disease 2019 (COVID‐19) pandemic, many nations relied on unprecedented amounts of health‐sector aid to efficiently vaccinate their populations. These vaccines and supporting materials came from a variety of traditional and nontraditional donors, with the majority donor differing by recipient country.
Anthony Un, Paul Un
wiley +1 more source
Effect of Design Variables on Stability Threshold Speed of Bump Foil Journal Bearings [PDF]
, 2009 Bump foil journal bearings are prospective applicants for machine elements that can support a small-sized rotor of high-speed rotary machinery. The authors have proposed two models to the bearing, one of which corresponds to the bearing with an excessive
生島 大喜, 畠中 清史
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Zhendong Ceshi yu Zhenduan针对永磁同步发电机气隙动偏心故障下关键部件振动特性研究不足的问题，提出便捷经济的发电机动偏心实验模拟方案，分析发电机定子、定子绕组与转子在动偏心故障前后的振动特性。首先，通过建立理论解析模型，揭示动偏心对定子单位面积磁拉力、绕组电磁力与转子不平衡磁拉力及相关部件振动特性的影响机理；其次，构建有限元模型并进行电磁与谐响应分析，阐明定子、绕组及转子的激振力与振动响应特性；然后，搭建基于轴承内圈更换的动偏心实验模拟装置并进行关键部件的振动测试，实现不同偏心程度下的实验验证；最后，对理论 ...
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Gaoya dianqi, 2019 电缆接头偏心导致绝缘性能变差和局部过热,加速绝缘老化和击穿,严重时会造成电缆爆炸。因此,文中提出了一种基于表面温度统计特性的表征电缆接头偏心情况的方法,首先建立了电缆接头的电磁—热多物理场模型,在验证模型准确性的基础上,仿真验证了利用表面温度统计特性表征电缆接头偏心程度的有效性;其次,搭建了电缆接头偏心模拟试验平台,试验分析了不同偏心度下的温度概率密度曲线分布规律。结果表明:利用电缆接头表面温度统计特性能够较好的反映电缆接头偏心情况,且可利用统计参数与电缆偏心程度间的数学关系逆向推知电缆接头偏心度。
甘德刚 +7 more
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Jianzhu Gangjiegou Jinzhan, 2023 为研究粗骨料类型、空心率、长细比和偏心距对方中空夹层钢管陶瓷再生混凝土柱偏压力学性能的影响，进行了16根试件的偏压试验，其中粗骨料类型分别为废弃陶瓷和天然碎石。试验结果表明：所有试件均表现为弹塑性失稳破坏；试件的极限承载力和抗弯刚度随长细比和偏心距的增大而降低，其中中空夹层试件的极限承载力高于实心试件的相应值；陶瓷再生混凝土试件展现出了较好的延性和变形能力，其极限承载力与普通混凝土试件接近。使用有限元软件对试验进行模拟，模拟得到的荷载-跨中挠度曲线整体与试验曲线接近。采用T/CCES 7—2020和DB
黄宏 +5 more
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