Results 101 to 110 of about 37,045 (159)
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Magnetic particles coated with carbon shells have been considered as promising electromagnetic wave absorption materials with antibacterial features. However, how to precisely control the monodispersed magnetic nanoparticles on a carbon matrix to manipulate impedance matching and antibacterial performances is still a key challenge.
Xiaofei Li +10 more
wiley +1 more source
四川大学学报. 自然科学版, 2010 运用切断近似的方法,在有效场框架下,对稀疏晶场作用的键无规Blume-Capel(BC)模型的相变进行了研究.具体分析了三种键无规分布的BC模型.分别探讨了系统三临界点(TCP)随稀疏晶场和键无规这两种无序因子的变化关系及相变曲线呈现的一些新特征,对不同键无规分布的BC模型的相图进行了比较,并给出相应的相图.
朱海霞, 晏世雷
doaj
TA10 Titanium Alloy in HCl Solution: W‐Influenced Corrosion and Passivation Film Evolution
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT This work investigated the evolution of passive films of Ti–0.3Mo–0.8Ni (TMN) in 5 mol L−1 HCl and studied the influence of W on the anti‐corrosion properties of TMN. The intermittent electrochemical impedance spectroscopy test results showed that when TMN entered 5 mol L−1 HCl solution, the stability of the passive film first became stronger ...
Chaowen Zheng +7 more
wiley +1 more source
Gaoya dianqi, 2017 为了降低直流系统换相失败的几率,通过对换相机理的分析,得到促进换相的因素,利用模糊控制预防控制换相失败。针对常规模糊控制精度不高,及控制规则与精度间的矛盾,提出了一种基于相平面响应轨迹特征向量法的变论域模糊预防控制方法,从而动态改变论域,修正控制规则,提高控制精度和收敛性。该方法动态监测交流电压的变化和变化率,一旦故障快速增大越前触发角,减小换相面积,抑制换相失败的发生。通过CIGRE HVDC标准模型进行了仿真研究,仿真结果验证了所提控制方法的灵敏性和准确性,能够有效地降低换相失败发生的概率。
胡松伶 +3 more
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
Gaoya dianqi, 2017 准确判断单相接地故障,是馈线自动化关键技术之一。基于时频谱突变原理,提出了一种利用Daubechies db4-db8小波变换提取突变特征量,运用非定项属性决策原则,进行单相接地故障施行判断方法。开发了相应的智能柱上开关;介绍了实际物理模拟试验结果;某山区配电网变电站的现场试运行表明,单相接地故障判断准确性达到100%,验证了该方法的准确性和实用性。
阙波, 陈蕾, 邵学俭
doaj
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
Shuitu Baochi Xuebao目的整地是丘陵山区农业生产中的关键措施，明确整地后土壤属性的变化与田间土壤水分空间变异特征的响应关系，对于提升农业生产效益具有重要意义。方法以广西丘陵山区水平和反坡2种典型整地措施为研究对象，将野外雷达探测试验与室内土壤分析试验相结合，利用图像解析、统计分析等方法，深入探讨整地措施对坡耕地田间土壤水分变异特征的作用。结果在相同外部供水条件下，水平整地后的土壤水分空间变化显著发生在0~30 cm土层，反坡整地集中在20~40 cm土层，坡耕地贯穿整个0~50 cm土层 ...
倪晓庆 +6 more
doaj +2 more sources
四川大学学报. 自然科学版, 2009 在q形变费米-狄拉克分布函数的基础上,研究了相对论q形变理想费米气体的低温热力学统计性质,得到了一些重要热力学量例如费米能,基态能,化学势,总能和热容量的解析表达式,揭示了q形变参数和相对论对系统性质的影响.结果表明:q形变导致了一些与正常的系统不同的新奇特性,另外,相对论费米系统的性质与非相对论系统的性质明显不同.
刘慧, 门福殿, 章毛连, 王玉连
doaj
Habitat and spatial trends of U.K. wintering waterbird populations over 50 years
Conservation Biology, Volume 40, Issue 5, October 2026.Abstract The United Kingdom is an important wintering ground for millions of waterbirds. Most U.K. wintering waterbird populations increased between 1970 and the mid‐1990s, but declined thereafter. We examined U.K. population indices in 46 wintering waterbird species in two 25‐year periods, 1970–1994 and 1995–2019, to identify which waterbird groups ...
Blaise Martay +8 more
wiley +1 more source