Results 41 to 50 of about 1,589,273 (150)
Shiyou jixie, 2011 基于有限差分方法，结合数值模拟技术分析了空间锥形螺旋弹性管束的结构参数对其换热特性的影响规律，通过与文献中试验数据对比将误差控制在5%以内。在此基础上，从对流换热场协同理论出发，计算了空间螺旋管束管内速度、速度梯度、温度梯度和压力梯度各矢量间的协同关系，通过对3种协同角对比分析了管束的强化换热特性、压降特性以及综合性能。结果表明，空间螺旋弹性管束的锥度对其换热特性影响较大，而螺距对其换热特性的影响可以忽略；另外，与内插细杆强化管相比，空间螺旋弹性管束的综合性能显著提高。
葛梦然, 闫柯, 高军, 葛培琪
doaj
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Laser‐directed energy deposition (L‐DED) offers a flexible route for fabricating γ‐TiAl components, but the as‐deposited microstructure requires post‐processing to overcome limited deformation capability. Here, an L‐DED Ti–48Al–2Cr–2Nb alloy was subjected to solution and solution‐aging treatments.
Mengya Chu +6 more
wiley +1 more source
Enhanced Treatment of Printing and Dyeing Wastewater Using H2O2-Biochemical Method
, 2017 传统生化法对印染废水的处理有一定的局限性。本文研究了双氧水协同水解酸化-接触氧化系统,对印染废水进行强化处理。采用污泥挂膜、生化系统启动、双氧水协同启动的方法,将双氧水投加到水解酸化时的条件严格控制为:投加浓度3 mL·L-1、投加量100.0 mL、流速0.67 mL·min-1、投加频率1次·d-1,可使整个系统成功启动与稳定运行。实验结果表明,双氧水协同水解酸化-接触氧化可对印染废水中的特征污染物进行有效强化处理。其中,COD平均去除率为89.8 ...
于广平 +4 more
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Bimetallic structures fabricated by laser powder bed fusion (LPBF) provide an effective strategy for achieving multifunctional integration, yet interfacial structural continuity and the role of lattice defects remain insufficiently understood.
Jinguo Ge, Shuo Yin
wiley +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT High‐yield photocatalytic H2O2 production in sacrificial agent‐free pure water constitutes a critical bottleneck requiring urgent advances in energy catalysis. Although ZnIn2S4 (ZIS) exhibits favourable visible light absorption, it is plagued by severe bulk charge carrier recombination and scarce accessible surface‐active sites.
Sheng Liu +7 more
wiley +1 more source
World Affairs, Volume 189, Issue 4, Winter 2026.ABSTRACT Anchored on the sustainable development goals (SDGs) and the Paris Agreement, which seek to limit the global average temperature to well below 2°C above pre‐industrial levels and pursue efforts to limit the temperature to 1.5°C, this study investigates how green energy finance and environmental taxes affect environmental quality, with an ...
Mohammed Musah +4 more
wiley +1 more source
Gaoya dianqi针对风电并网系统的暂态稳定性问题，文中研究了考虑风电场接入的电力系统暂态稳定约束网源协同规划方法，从规划和运行结合的视角增强电力系统暂态稳定性。论文首先以系统网架（网）优化加强、无功补偿电源（源）位置和容量优化、同步机有功功率（源）调整为手段，建立了暂态功角稳定和暂态电压稳定的能量约束条件，提出了考虑双馈风机（DFIG）、静止无功补偿器（SVC）等元件动态特性以及暂态功角和暂态电压稳定约束的网源协同规划半不定优化模型；其次通过罚函数法将所提半不定优化模型转化为无约束优化问题 ...
陆明璇 +5 more
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Scientists’ warning on the global destruction of rock outcrop ecosystems
Conservation Biology, Volume 40, Issue 5, October 2026.Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula +19 more
wiley +1 more source
Gongye shui chuli焦化废水污染负荷高、有机污染物组成复杂、生物毒性强，是一类非常难处理的煤化工废水。经传统的“物化+生化”工艺处理后，其生化尾水中仍残留部分难降解有机物与一定的生物毒性，COD难以达到《炼焦化学工业污染物排放标准》（GB 16171—2012）的限值要求，需进一步处理。分析了焦化废水生化尾水中的残余有机物和生物毒性特征，归纳总结了混凝、吸附、膜过滤等分离技术，Fenton、催化臭氧氧化、电磁强化氧化 ...
李泽乙 +6 more
doaj +2 more sources
Conservation Biology, Volume 40, Issue 5, October 2026.Abstract The International Union for Conservation of Nature (IUCN) Red List of Threatened Species is a critical measure of global aquatic and terrestrial biodiversity status. It is also the basis for the Red List Index, which tracks extinction risk over time.
Brittany Finucci +10 more
wiley +1 more source