Results 31 to 40 of about 19,715 (172)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The inherent brittleness of hardmetals stems from the rigid covalent bond in the ceramic matrix and the sharp ceramic/metal interface, which restricts the nucleation and motion of dislocations. In this study, a novel strategy is proposed to activate significant dislocation behaviors in the WC matrix by employing a non‐equiatomic CoNiFeCr ...
Cheng Qian +9 more
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Zhongguo shiyan zhenduanxue, 2006 目的探讨胸水腺苷脱氨酶（ADA）对结核性胸水的诊断价值。方法选择2003年10月-2005年10月,在我科住院的结核性胸水患者32例（结核性组）,以同期的51例非结核性胸水患者（癌性17例,非癌性34例）为对照组（非结核性组）,全部病例均测胸水ADA（酶法）和胸水找结核杆菌,44例同时进行了PPD1U、5U皮试,73例检测血沉,32例测血结核抗体。结果结核性组与非结核性组:胸水ADA均值45.8±26.7vs11.69±19.63[14.0±10.7（癌性）、10.5±22.9（非癌性）]U/L,P=0.
徐林发 +4 more
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Analysis on amide synthase and methyltransferase in biosynthesis of streptovaricin from the strain NRRL 2494 [PDF]
, 2015 曲张链菌素（streptovaricin）是由壮观链霉菌（Streptomycesspectabilis）NRRL2494产生的安莎类抗生素，与抗结核药物利福霉素具有相似的化学结构骨架，具有抗菌及免疫抑制等多种生物活性。本论文在对NRRL2494菌株基因组测序的基础上，获得曲张链菌素生物合成基因簇，并通过构建稳定的遗传操作体系，研究其生物合成途径中重要基因的功能，为利用组合生物学手段获得成药性好的曲张链菌素类化合物奠定基础。 本论文首次分析了NRRL2494菌株的基因组全长17.5MB序列 ...
宋姣姣
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Ceramic reinforcement is crucial for crafting ultrastrong and wear‐resistant metallic components. However, pronounced stress concentration and strain incompatibility at ceramic–metal interfaces often trigger microcrack initiation and ceramic spalling exacerbating friction under sliding conditions.
Dongting Li +8 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2015 结核病是目前全球最常见的传染性疾病之一,结核分枝杆菌相关检查在各种结核病确诊过程中有着举足轻重的作用。传统诊断结核病主要依赖于结核菌涂片,经抗酸染色然后在显微镜下观察,尽管该方法的特异性较强,但是其敏感性较低,且对某些类型结核病如骨结核、中枢神经系统结核来说标本采集难度较大[1-2],从而使得该方法在临床上的应用受到了极大的限制。随着研究的深入,诸多新技术逐步用于结核病的诊断 ...
李建华 +4 more
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Zhongguo shiyan zhenduanxue, 2022 目的 研究单核细胞P糖蛋白(Pgp)、多药耐药相关蛋白(MRP)在肺结核病患者外周血中的表达情况,探讨其与多药耐药的相关性。方法 回顾性分析144例肺结核病患者临床资料及同期50例健康体检者资料,采用Trizol法检测Pgp、MRP基因在血清样本中表达情况,根据药敏试验将144例肺结核病患者分为耐药组和初治肺结核病组,分析Pgp、MRP基因在肺结核患者血清中的表达情况,探讨肺结核病患者耐药的影响因素。结果 Pgp、MRP在肺结核病组表达量及阳性率均高于对照组,耐药组Pgp ...
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The pre‐existing α‐Fe crystals have important effects on the precipitation and growth of nanocrystals and finally determine the comprehensive soft magnetic properties (SMPs) of the nanocrystalline alloys (NAs). In this work, a high content of Cu elements has been added to Nanomet‐type alloys to enhance the gradient heterogeneity in order to ...
Lei Xie +6 more
wiley +1 more source
Surgical treatment of neuropathic pain [PDF]
, 2013 Neuropathic pain (NP) is a transient dysfunction caused by the damage of peripheral nerve and central nervous system, characterized with hyperalgesia, allodynia and spontaneous pain.
Zhi-pei LING, Zhi-qiang CUI
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Zirconium dioxide (ZrO2) thin films are critical materials owing to their thermal stability, mechanical durability, and optical transparency enabling applications in photonic, sensing, and electronic devices. However, achieving uniform deposition via plasma‐enhanced chemical vapor deposition (PE‐CVD) has remained challenging due to poor ...
Nour Manafikhi +4 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2015 非结核性分枝杆菌（NTM）是指在分枝杆菌属中,除了结核分枝杆菌复合群（人型、牛型、非洲型和田鼠型结核分枝杆菌）和麻风分枝杆菌以外的分枝杆菌。非结核分支杆菌脑膜炎是由NTM引起。由于非结核分支杆菌与结核分支杆菌同为分支杆菌属,故非结核分支杆菌脑膜炎与结核分支杆菌脑膜炎的临床症状、X线胸片特点极为相似,单纯靠胸片和痰液结核分枝杆菌抗酸染色涂片是无法区分的 ...
王志刚, 金梦, 金立民, 杨立彬
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