Results 41 to 50 of about 16,864 (162)
Jellyfish blooms restructure plankton dynamics and trophic linkages in coastal waters
Functional Ecology, Volume 40, Issue 5, Page 1443-1460, May 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Jellyfish blooms are increasing globally in frequency and intensity, introducing complex ecological interactions, yet the mechanisms by which they alter ecosystem structure remain poorly characterized due to a lack of sustained field observations.
Pengpeng Wang +4 more
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Attainment Pairing Effects on Cognitive Conflict in Technology‐enhanced EFL Cooperative Tasks
International Journal of Applied Linguistics, Volume 36, Issue 2, Page 1594-1605, May 2026.ABSTRACT This study examines how attainment pairing (high‐high versus high‐low versus low‐low attainment) impacts English as a Foreign Language (EFL) learner engagement during technology‐enhanced cooperative writing tasks. Seventy‐eight Chinese university learners formed 39 dyads (13 pairs per group) via Tencent Meeting.
Ying Liu, Allen Thurston
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Shuitu Baochi Xuebao, 2017 为了探究土石混合崩积体坡面侵蚀的水动力学机理，采用室内放水冲刷试验，研究了不同流量（2，4，8，16 L/min）和坡度（10°，20°，30°，40°）条件下4种土石混合崩积体（0，20%，40%，60%砾石质量百分数）坡面侵蚀的水动力学特征。结果表明：（1）在小坡度和小流量条件下，侵蚀率随砾石含量的增大而减小；当流量或者坡度的增大时，侵蚀率随砾石含量的增加呈先减小后增大的规律；各土石混合物侵蚀率均能用坡度和流量的二元幂函数来表达。（2）水流剪切力、水流功率和单位水流功率与侵蚀率均呈线性函数关系 ...
蒋芳市, 黄炎和
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, 2011 利用底部激光照射方法对水流下近壁面处的子母管结构尾流场进行PIV粒子图像速度场测量。取旋流强度作为流场旋涡强弱的表征参量,研究了无量纲子母管距离比(G/D)、母管与壁面的间距比(e/D)以及子母管直径比(d/D)等因素对结构尾涡脱落的影响。在亚临界流动条件下,当G/D>0.25时,子管对母管的涡脱落影响较小,二者尾迹相互独立,形成两列独立涡街;当G ...
唐驰, 崔金声, 臧志鹏, 高福平
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The stability of aqueous Zn2+ batteries is severely hindered by parasitic reactions at the Zn anode/electrolyte interface. Herein, itaconic acid (IA) is introduced as an effective electrolyte additive to achieve a highly stable zinc anode. Remarkably, IA concurrently modulates both the zinc anode/electrolyte interfacial structure and the Zn2 ...
Chenggang Wang +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Diabetic wound infections are a common complication of diabetes, which severely impact patients' quality of life. Effective treatment of diabetic wound infections remains one major challenge in the clinic, partially due to the formation of bacterial biofilm and antibiotic resistance.
Liang Zhou +8 more
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Shuitu Baochi Xuebao, 2019 针对坡面径流水深浅（1~5 mm）和水动力学参数（流速、水深等）提取困难，给坡面侵蚀径流水流结构、能量耗散及泥沙输移等的深入研究带来困难的问题，基于水动力学原理和相似性理论，通过"非常规比尺模型"将径流水深进行放大，来研究坡面薄层含沙水流的水流相似过程。结果表明：（1）当薄层含沙水流水深放大2.5倍，含沙量在10~320 kg/m3时，薄层含沙水流原型和模型的水面线（阻力）、流速、侵蚀地形的误差分别为0~0.1%，0.1%~5.3%，0.9%~4.9%，误差均在允许范围之内，原型和模型满足几何 ...
尹艳 +4 more
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基于同步辐射高时空分辨
He jishu空化气泡及其空化过程是气泡动力学的重要研究内容，传统的研究手段基于可见光高速成像技术对该过程进行实时观测，然而存在着空间分辨率和信噪比较低、成像衬度微弱的问题。本文基于上海光源快速X光成像线站（BL16U2）的高通量粉光和快速X射线成像探测器，构建了实时观测水下空泡动力学过程的高时空分辨X射线成像实验系统，并开展了水下空泡动力学过程的实验研究。实验结果表明该实验系统的时间分辨率达到了25 μs，探测器有效像素尺寸为4 μm，并实时、清晰地观测到了水中空泡生长、溃破、产生射流的完整、细微的演化过程。此外 ...
陈 舒宁 +6 more
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, 2018 由于三阶非线性薛定谔方程的普遍适用性,水波动力学与非线性光学在特定问题中展现中类似的现象。此文利用A kers-M ilew ski(AM)模型方程研究非线性深水重力-毛细波的动力学行为。数值结果显示,当高频的重力-毛细波列以近临界速度(23cm/s)移动时,初始的发展演化展现出与非线性光学类似的聚焦现象,这一结果与传统模型三阶非线性薛定谔方程的预测相符。更为重要的是,与非线性光学一样,对应于高斯型初值的点态聚焦与对应于超高斯型初值的环形聚焦均被A M方程的数值实验所证实。但重力 ...
王展
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Prediction of water inflow after excavation of underground chamber group with long span and high buried depth [PDF]
Predict the water inflow after excavation of large underground caverns is crucial for the safe construction and operation of underground engineering. To predict the water inflow of underground caverns after excavation and provide guidance for drainage ...
Guanghong JU +5 more
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