Results 31 to 40 of about 11,676 (213)
Rare Metals, EarlyView.ABSTRACT Developing Cu‐based composites that simultaneously achieve ultra‐high strength, ductility, and electrical conductivity remains critical for advanced electrical contact applications. In this work, multiphase AlCrCuFeNi2.5 high‐entropy alloy (HEA) reinforcements are incorporated into CuCrZr matrix via spark plasma sintering (SPS) and annealing ...
Tao Hong +8 more
wiley +1 more source
Phase Diagram of Lead-free Brass Systems and Their Applications in Morphological Design of Bi-containing Brass [PDF]
, 2015 由于铅黄铜具备优异的耐磨性、耐化学腐蚀和切削性，因而常被用于制造阀门、水管以及散热器等。近年来随着人们对自身健康的关注以及环保意识的不断加强，有铅黄铜的无铅化已经是黄铜业的一个行业趋势。新型无铅黄铜的发展俨然已成为黄铜行业一个迫切的目标。相图是材料设计的基本指南，可以对合金成分、制备工艺提供指导,并在一定程度上对合金的组织进行预测。本研究主要利用合金法实验测定了Cu-Zn-Sn，Sn-Sb-Zn，Sn-Sb-Cu三元系在不同温度全成分范围内的等温截面相图。本研究取得的主要研究成果如下： (1)通过合金法，
许叶潞
core
Sociologias Plurais, 2012 Comumente, em referência a atletas de futebol, evoca-se uma masculinidade tradicional (BONINO, 2008), definida como modelo social hegemônico. No presente artigo, refletir-se-á sobre a chamada "área reservada masculina" (MAGUIRE & DUNNING, 1997), considerada como relevante à manutenção das estruturas patriarcais. A partir de coberturas jornalísticas
openaire +2 more sources
Aster tongrenensis (Asteraceae), a remarkable new species from Guizhou, China
Nordic Journal of Botany, Volume 2026, Issue 2, February 2026.Aster tongrenensis (Asteraceae), a remarkable new species from Guizhou, China, is here described, illustrated and compared with related taxa based on integrated evidence from morphology, micromorphology and molecular phylogeny. Morphological and micromorphological observations indicate that A. tongrenensis is most similar to A.
Zhi‐Xin Quan +3 more
wiley +1 more source
A Business plan for Xiamen Chen Run Trading Co.,Ltd [PDF]
, 2015 进入21世纪的中国经济正经历着翻天覆地的变化，中国已逐渐成为世界经济各种力量角逐场上的关键角色。现阶段，我国对外贸易模式相对于改革开放初期，已经发生了深刻的变化。与世界其他工业化国家发展历程相似，中国工业化的过程中，不可避免的要消耗大量的矿产资源。这些资源中有一部分是依靠本国自身储量可以解决，有些必须依靠国外进口方能弥补不足。以铜矿为例，从我国储量上看，我国是一个富产铜的国家。但是，从本国现阶段工业化需求的角度上看，我国又是一个贫铜国，每年需要从国外进口大量的铜矿石以满足国内的消费需求 ...
陈杰
core
Structure and Performance of Cu-Fe Bimodal Support for Higher Alcohol Syntheses [PDF]
, 2012 Copper-iron modified bimodal support (M) with different mass fractions of Cu and Fe elements were prepared by an ultrasonic impregnation method. The catalytic performance for higher alcohol syntheses (HAS) was investigated in a fixed-bed flow reactor ...
Ding Ming-Yue +3 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Introducing oxygen vacancies has emerged as an essential strategy to affect the sensing properties of nanomaterials. However, existing methods for manipulating oxygen require high cost, complex operation, and harsh conditions. Herein, a simple NH4+‐assisted heat treatment approach was designed to regulate the concentration of oxygen vacancies ...
Qiu‐Yue Zheng +10 more
wiley +1 more source
Government Venture Capital and Entrepreneurship: Evidence From China
Journal of Empirical Legal Studies, Volume 22, Issue 4, Page 568-598, December 2025.ABSTRACT Government venture capital funds (GVCs) are a global phenomenon. GVCs are central players in China's VC market, now the second largest globally. While existing literature often depicts China's GVCs as a successful public effort to promote entrepreneurship, this paper presents an alternative view.
Isabelle Zhang
wiley +1 more source
Discursos Fotograficos, 2014 Resenha de: SILVA, Mylton Severiano da. Realidade - História da revista que virou lenda. Florianópolis: Editora Insular, 2013. 320 p.
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Veterinary Dermatology, Volume 36, Issue 6, Page 862-869, December 2025.ABSTRACT Background Chronic cases of canine otitis externa (OE) often develop infections with Pseudomonas aeruginosa (PA). Given the organism's high level of resistance, veterinary surgeons often turn to compounded solutions. Limited data describing the stability and potency of compounded ceftazidime (CAZ) solutions are available, which may affect ...
McKenna Snidow +6 more
wiley +1 more source