Results 131 to 140 of about 2,020,061 (284)
, 2009 一种组成可控的钯合金复合膜制备方法，通过对化学镀沉积金属钯和第二组份过程中生成的气体进行定量，准确控制制备过程中金属钯及其第二组份的沉积量，从而组成可控地制备钯合金复合膜。通过本发明的制备方法，能够准确方便地控制钯合金膜的组成，获得组成较佳的钯合金复合膜，从而具有高的透氢性能。利用本方法制备的高性能钯合金复合膜在氢气分离和涉及氢气的反应中具有广阔的应用前景，特别是在电子行业、加氢站和分散电站小规模制氢氢气分离方面，将比传统变压吸附分离(PSA) 技术具有明显的竞争优势 ...
徐恒泳 +2 more
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT A thermomechanical strategy based on rolling‐annealing cyclic (RAC) was developed to regulate defect architecture and precipitation behavior in a (FeCoCrNi)94Al3Ti3 high‐entropy alloy. Intermediate annealing during rolling enables progressive grain refinement and introduces a high density of twins, stacking faults, and dislocations, forming a ...
Jiale Man +6 more
wiley +1 more source
β-羰基膦氧化合物和α-磺酰氧基酮的合成及EGFR/HER-2双靶点抑制剂的设计，合成和生物活性研究
, 2017 α-杂原子取代酮是一类在有机合成中有广泛用途的化合物，用于亲核取代反应，Horner–Wadsworth–Emmons反应，光反应等，而且还参与构建各种杂环化合物。其中，β-羰基膦氧化合物和α-磺酰氧基酮是两类重要的有机合成中间体。本课题组在前期工作的基础上，开发了在温和条件下高效合成β-羰基膦氧化合物和α-磺酰氧基酮的新方法。本论文第一部分综述了烯烃和炔烃经双官能化策略构建α-杂原子取代酮的研究进展。第二部分介绍了一种空气参与的铜催化烯烃合成β-羰基膦氧化合物的新方法。β-羰基膦氧化合物是构建α,β ...
张智杰
core
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT The exceptional ductility of face‐centered cubic high/medium‐entropy alloys (H/MEAs) is counterbalanced by intrinsically restrained yield strength, fundamentally compromising their application in structural and functional materials. Here, a novel carbon (C)‐driven precipitation strategy is introduced to promote discontinuous precipitation (DP)
Hao Feng +10 more
wiley +1 more source
[Glycosylphosphatidylinositol biosynthesis deficiency 15 caused by GPAA1 gene mutation: a rare disease study]. [PDF]
Zhongguo Dang Dai Er Ke Za Zhi, 2023 Chen QR, Zhang ZJ, Lu YX, Yuan SB, Li J.
europepmc +1 more source
, 2010 本发明公开了一种重要的抗银屑病药物蒽林的并环衍生物的合成方法，并合成了一些新的蒽林并环衍生物。以蒽林(二羟蒽酚、1，8，9-蒽三酚)为起始原料，与1-苯乙炔基Fischer卡宾化合物反应，经过连续加成/环化反应以及氧化脱金属反应，得到了四种新型的蒽林并环衍生物。本发明方法利用1-苯乙炔基Fischer卡宾化合物的多反应性，使其与蒽林在温和条件下发生连续多步反应，得到了利用传统有机合成方法难以合成或者需要复杂合成步骤才能得到的蒽林并环衍生物。本发明合成反应条件温和、操作简便、原料易得、效率高 ...
罗宁, 余正坤
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Osteoarthritis (OA) therapy remains constrained by the coexistence of irreversible cartilage loss and a persistently hostile joint microenvironment characterized by oxidative stress, synovial inflammation, and impaired tissue‐regenerative signaling.
Xinyu Wu +11 more
wiley +1 more source