Results 21 to 30 of about 174,442 (142)
Comprehensive framework for assessing and optimizing existing research networks
Conservation Biology, EarlyView.Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
wiley +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Systematic studies on the fatigue deformation and damage mechanisms of nickel‐based single‐crystal superalloys (Ni‐SXs) under combined thermal and mechanical conditions remain limited, particularly regarding the influence of strain amplitude on the relative contributions of fatigue and oxidation damage.
Liyin Zhang +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT NiBSi‐based coatings reinforced with spherical cast tungsten carbide (NSC coating), irregular cast tungsten carbide (NC coating), and macrocrystalline tungsten carbide (NMC coating) are investigated to elucidate the impact of abrasive wear behavior.
Chong Chen +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Overcoming the strength–ductility trade‐off in face‐centered cubic (FCC) multi‐principal element alloys (MPEAs), particularly at cryogenic temperatures, remains a significant challenge. Here, a laser powder bed fusion (LPBF)–enabled direct aging strategy is employed to modify the precipitation behavior in a Ni53Fe20Cr23Nb4 (at%) alloy.
Xiaohui Qin +8 more
wiley +1 more source
Gaoya dianqi, 2013 笔者介绍了中国在微电网研究和应用方面的现状。中国的微电网技术跟随着国外研究的脚步,自2004年左右开始逐渐兴起,目前已经成为智能电网技术中最活跃的分支之一。中国的微电网技术发展受智能电网的深化和能源需求发展的激励,与分布式发电技术的发展紧密联系,存在科研院所主导的微电网技术研究和企业主导的微电网技术应用两个主要方向。目前各省都已经有了微电网技术研究和应用的典型代表。以天津大学、合肥工业大学、西安交通大学、中科院电工所为代表的科研院所建立了自己的微电网实验系统,在微电网技术研究方面处于国内领先地位 ...
武星, 殷晓刚, 宋昕, 王景
doaj
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT The past few decades have witnessed multiple outbreaks of pandemics. Hygiene in public facilities is one of the key factors in maintaining public health security. Escalator belts, as frequently touched by passengers, become a potential medium for spreading pathogens.
Yang Xu +12 more
wiley +1 more source
Gaoya dianqi, 2017 为了对微网规划方案的经济性进行科学评价,提出了基于理想向量空间投影理论的微网经济性综合评估数学模型。构建了适应微网规划特点的综合评价指标体系,包括初始投资成本、运行维护成本、节能效益、环保效益、可靠性效益、政府补贴效益、降损效益、延缓电网投资效益等。在此基础上,融合理想向量空间模型和灰色矢量投影原理,实现微网规划方案优选排序。通过对一个实际的微网示范工程进行计算分析,验证了该模型的有效性和优越性,结果表明,该模型可以全面考虑影响微网规划特征的要素,量化分析微网规划方案的优劣,引导微网规划的投资方向。
方小飞, 贺铁光, 苏浩益
doaj
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Aiming at the problems of insufficient forming quality and poor surface performance in the preparation of Ti‐6Al‐4V alloy by laser powder bed fusion (LPBF), this study proposed a laser in situ forging additive manufacturing (LIF‐AM) technology, which integrates LPBF with femtosecond laser in situ shock forging and realizes defect control and ...
Peng He +10 more
wiley +1 more source
Gaoya dianqi, 2015 微电网技术作为主动式配电网的关键技术,是智能电网建设重要范畴。文中首先阐述了主动式配电网的建设必要性,介绍了微电网的优越性,并结合中国电力系统的实际情况,探讨了微电网建设过程中存在的技术难点和微电网接入后带来的系统问题,并结合智能电网建设的背景,提出了微电网技术的发展趋势。为实现低碳电力系统建设提供了一个良好的解决思路。
董开松, 谢永涛, 贾嵘, 沈渭程
doaj
全球能源互联网应用于孤岛型微电网以实现频率控制功能的传统控制器多为分数阶PID（fractional order PID，FOPID）控制器及模糊分数阶PID（fuzzy fractional order PID，FFOPID） 控制器，二者的控制性能均存在局限性。针对这一问题，设计了一种变论域混合FFOPID控制器，用于提高孤岛微电网的频率控制性能。通过对比FOPID、FFOPID以及变论域混合FFOPID3种控制器作用时的不同效果 ...
李翔宇 +7 more
doaj +1 more source