Results 71 to 80 of about 1,061,235 (143)

体外血栓形成后血液的流变性变化及体外血栓形成试验的规范化操作

open access: yes, 2008
目的:观察体外模拟血栓形成后剩余血液的流变学变化,并探讨体外血栓形成试验的规范化操作。方法:采用30例健康人静脉血液,一部分抗凝后测定血液流变学指标和血细胞计数,另一部分不抗凝,于Chandler环内模拟血栓形成后,再测定剩余血液的血细胞计数及流变学指标,包括血液表观粘度、红细胞聚集指数、红细胞变形指数、血小板最大聚集率、血小板粘附率和血浆纤维蛋白原含量等。结果:体外模拟血栓形成后剩余血液的表观粘度,血小板计数、白细胞计数及纤维蛋白原含量均显著降低(P0.05)。结论 ...
钱民全, 马鲁波, 刘剑刚
core   +1 more source

晶胶配比不同对颅脑术患者围术期动脉血气及血流动力学的影响研究

open access: yesZhongguo shiyan zhenduanxue, 2019
研究显示,行颅脑术治疗的神经外科患者围手术期体液情况通常复杂多变,手术前患者的原有疾病往往会引发脑水肿、颅内压(ICP)上升及水盐代谢紊乱等现象,而合适的围术期液体管理是确保手术患者生命体征平稳的关键环节,也是疾病临床治疗的基础[1,2]。目前临床上乳酸林格氏液和生理盐水是最常用的晶体液,其中乳酸林格氏液的成分接近人体细胞外液,可有效补充并恢复机体细胞外容量[3 ...
周少武, 刘克超
doaj  

Dual‐Regulation of Continuous and Discontinuous Precipitation via Carbon Alloying for Enhanced Strength‐Ductility Synergy in a Medium‐Entropy Alloy

open access: yesRare 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

小儿先天性心脏病体外循环术后肌张力增高原因分析与护理对策

open access: yesHuli yanjiu, 2016
摘要: 原因分析小儿先天性心脏病体外循环术后肌张力增高的常见原因有神经系统功能损害和电解质紊乱。体外循环术后出现早期的神经系统并发症常见于长时间体外循环、主动脉阻断、LCOS等情形。
茅爱芳, 赵胜
doaj  

一种半导体p-i-n结太阳能电池外延片及其制备方法

open access: yes
本发明公开了一种基于InxGa1-xN纳米柱的半导体p-i-n结太阳能电池外延片,包括:一衬底,该衬底用于在其上进行InxGa1-xN材料外延生长;一InxGa1-xN材料模板,该InxGa1-xN材料模板外延生长在衬底上;一纳米柱阵列,该纳米柱阵列加工形成于InxGa1-xN材料模板上;一半导体太阳能电池p-i-n结构,该p-i-n结构外延生长在纳米柱阵列的侧壁、顶部及纳米柱之间的材料模板表面。本发明同时公开了一种基于InxGa1-xN纳米柱的半导体p-i-n结太阳能电池外延片的制备方法。利用本发明 ...
王辉, 张书明, 杨辉, 朱建军
core  

Integrated Implantation of an Ultrasound‐Actuated BiFeO3 Piezoelectric Film and Bone Marrow Mesenchymal Stem Cell Sheet for Spatially and Stage‐Programmed Osteoarthritis Repair

open access: yesRare 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

下颌单侧游离端冠外精密附着体义齿三维有限元模型的建立

open access: yesZhongguo shiyan zhenduanxue, 2006
目的建立下颌单侧游离端冠外精密附着体三维有限元模型,为附着体义齿应力分析提供基础。方法采用CT扫描和I-DEAS软件,手工建模。结果建立了能够应用接触单元的下颌单侧游离端冠外精密附着体三维有限模型。结论采用I-DEAS软件可建立游离端冠外精密附着体三维有限元模型,此模型能反映冠外精密附着体构件之间义齿的接触关系,提高模型的仿真性。
王伟   +4 more
doaj  

银鲫卵母细胞体外诱导成熟的初步观察

open access: yes, 1994
银鲫卵母细胞体外诱导成熟的初步观察丁军,蒋一gui(中国科学院水生生物研究所,武汉430072)关键词银鲫,卵母细胞,成熟,体外诱导THEPRELIMINARYOBSERVATIONONINDUCINGCRUCIANCARP,CARASSIUSAUR..
丁军,蒋一珪
core  

Hierarchically Structured Zn‐ZnO@HA/PCL Biocompatible Coating: Enabling Controlled Degradation and Mechanical Stability of Magnesium Alloy Bone Implants

open access: yesRare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT Biodegradable magnesium alloys are limited in orthopedic applications due to their rapid corrosion and poor interfacial stability. In this work, a composite coating is constructed via magnetic filtered cathodic vacuum arc (MFCVA) deposition of a Zn interlayer, followed by hydrothermal in situ generation of ZnO to induce hydroxyapatite (HA ...
Chao Zhang   +9 more
wiley   +1 more source

体外循环术后血清S-100 蛋白浓度变化及其意义

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2001
【目的】观察体外循环(心肺转流术)术后血清S-100 蛋白浓度变化, 判断体外循环对脑损伤的影响。【方法】17 例接受体外循环心脏直视手术患者, 平均体外循环时间75.1 min, 主动脉阻断时间46.8 min 。术前、术后30 min、6 h、24 h 取颈 内静脉血标本, 离心后取血清检测S-100 蛋白浓度。【结果】血清S-100 蛋白浓度从术前平均0.44 μg/ L 上升至术后30 min 的 2.69 μg/ L, 随后下降, 至术后24 h 基本恢复术前水平;2 ...
熊 迈   +5 more
doaj  

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