Results 21 to 30 of about 6,166 (164)
In-situ visualization of nanosecond laser-materials processes and the functional structures preparation of thin film [PDF]
, 2016 新型材料和新结构的开发和利用一直是微电子和光电子领域的研究热点，而与传统材料加工技术相比，纳秒脉冲激光技术在材料功能性结构制备领域具有得天独厚的优势：首先是非接触加工，材料兼容性强；其次是适合微小尺寸加工，通过控制激光光斑形状和尺寸可以制备尺寸可控的表面功能性结构；更为重要的是纳秒脉冲激光可以实现激光能量在超短时间内与材料发生相互作用，因此纳秒脉冲激光加工技术在材料表面微结构制备领域占有举足轻重的地位 ...
亓东锋
core
Resource Substitution: Local Governments' Issue Attention and Policy Reinvention
Policy Studies Journal, EarlyView.ABSTRACT Research on policy reinvention, where a government modifies rather than replicates policy innovations introduced by other governments, has progressed significantly, but how it is influenced by the government's issue attention has not been thoroughly examined.
Yingxin Zhang, Yixue Yao, Kaifeng Yang
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2023 利用中国气象局（CMA）整编的西北太平洋1999—2018年热带气旋最佳路径数据集和美国国家环境预报中心（NCEP）再分析资料，结合均值、标准差、极端天气阈值等方法，确定热带气旋快速加强（RI）的阈值为-29.82 hPa·（24 h）-1，统计发现西北太平洋地区RI主要发生在7—10月，集中在5°N~20°N、120°E~160°E洋面。通过对RI与非快速加强（non-RI）的动态合成分析，对比2类样本多个环境变量的差异，结果发现：（1）RI对环境变量的响应时间与相关系数相关 ...
童梦烨(TONG Mengye) +1 more
doaj +1 more source
Effects of electron beam welding on the microstructure and impact properties of three reconstituted steels [PDF]
Specimen reconstitution technology is important for the in-service safety of reactor pressure vessels (RPVs) in nuclear power plants. To verify the feasibility of electron beam welding for the restructured specimens, the electron beam welding to ...
DAI Kunjie +8 more
core +1 more source
Influence of vanadium on the microstructure refinement of high strength automobile beam steel [PDF]
, 2016 The effects of vanadium on the microstructure refinement of automobile beam steel with a yield strength of 700 MPa were investigated by Gleeble-3500 Thermo Simulator, scanning electron microscopy, transmission electron microscopy and electron back ...
HE Yu-tian +5 more
core +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT This study demonstrates a new strategy for modifying the boron content to address stress‐relief cracking (SRC) in the 7CrMoVTiB10.10 alloy. First, coarse‐grained heat‐affected zone (CGHAZ) specimens with different boron contents were prepared via simulated welding thermal cycles.
Dongdong Zhang +3 more
wiley +1 more source
Influence of σ phases on the microstructure and properties of S32760 super duplex stainless steel [PDF]
, 2016 The precipitation behavior of σ phases in W-containing S32760 super duplex stainless steel was studied by aging treatment experiments. The morphology and chemical composition of the σ phases were investigated by scanning electron microscopy and
LI Guo-ping +3 more
core +1 more source
Functional Ecology, Volume 40, Issue 5, Page 1415-1427, May 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Wildfires are disrupting and regenerating forces in nature that affect all ecosystem components. However, the impact of wildfires on soil multitrophic biodiversity and the resulting consequences for ecosystem multifunctionality (EMF) remain poorly understood.
Juan Zhou +6 more
wiley +1 more source
Gaoya dianqi, 2022 我国东南沿海、西南山区属于典型的湿热气候环境,电气设备运行可靠性受湿热环境影响极大,以广东为代表的湿热海洋环境对电气设备长期安全运行提出了极高要求。随着我国“一带一路”战略发展,我国电力技术和电气设备逐渐向“一带一路”沿线国家输出,其中很多地区也属于典型的湿热气候。目前针对湿热气候环境中,电气设备受高温、高湿度、大降雨量、沿海高盐雾环境的影响研究还不充分,
doaj
Effect of hot forming temperature on the microstructure and mechanical properties of high strength square tubes [PDF]
, 2016 To overcome the challenge of traditional roll forming process and equipment on high strength square tubes at room temperature,hot roll forming process using local induction heating was proposed to produce high strength square tubes.A series of tests ...
HAN Jing-tao +3 more
core +1 more source