Growth process and magnetic anisotropy of amorphous La x Zn y O z nanowire arrays

Micro & nano letters

article

Fang-Kuo Wang¹  Xiao-You Yuan¹ 

[1] School of Chemistry and Chemical Engineering, Anhui University

关键词: magnetic anisotropy;    amorphous magnetic materials;    nanowires;    nanomagnetics;    lanthanum compounds;    nanofabrication;    scanning electron microscopy;    porous materials;    X-ray diffraction;    transmission electron microscopy;    X-ray chemical analysis;    magnetic hysteresis;    coercive force;    magnetic anisotropy;    nanowire array diameters;    amorphous nanowire array fabrication;    chemical coprecipitation;    subatmospheric pressure suction filtration;    porous anodic aluminium oxide template;    nanowire array growth process;    scanning electron microscopy;    morphological property;    structural property;    transmission electron microscopy;    X-ray diffraction;    energy dispersive X-ray spectroscopy;    hysteresis loops;    nanowire arrays;    coercive force;    saturation magnetisation;    magnetisation;    potential applications;    ultra-high-density magnetic memory materials;    temperature 293 K to 298 K;    pressure 1 atm;    size 90 nm;    LaxZnyOz;   

DOI  :  10.1049/mnl.2014.0023

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Background: High-dose heparin occasionally causes severe hypotension during cardiothoracic surgery. Being able to predict the severity of the decrease in blood pressure prior to administration of heparin would improve hemodynamic and anesthetic management. The aim of this study was to investigate the predictors of heparininduced hypotension and the effects of high-dose heparin on various hemodynamic and physiologic parameters.Methodology: The records of adult patients who underwent elective cardiothoracic surgery at University of Yamanashi Hospital between January 2016 and December 2017 were retrospectively reviewed. Single and multiple linear regression analyses were conducted to identify the predictors of heparin-induced hypotension. Results: High baseline systemic vascular resistance index (SVRI) and non-use of preoperative antihypertensive medication were significant predictors of heparininduced hypotension with a following regression equation: Percent change in mean arterial pressure = 17.273 + 0.00457 × (baseline SVRI) - 14.043 × (antihypertensive medication), where antihypertensive medication is coded as 0 = no antihypertensive drug and 1 = one or more antihypertensive drug(s), F = 7.80, the multiple correlation coefficient is 0.68645, and R adjusted for degrees of freedom is 0.41078.Conclusion: The baseline SVRI and non-use of preoperative antihypertensive medication are significant predictors of the severity of heparin-induced hypotension.

【 授权许可】

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