Preparation of yolk–shell microspheres as temperature switch on/off catalysts

Micro & nano letters

article

Kun Yang¹  Zhao Dai¹  Yuanyuan Chu¹  Guangping Chen² 

[1] State Key Laboratory of Hollow Fiber Membrane Material and Process, School of Environmental and Chemical Engineering, Tianjin Polytechnic University;Department of Physiological Sciences, College of Veterinary Medicine, Oklahoma State University

关键词: gold;    iron compounds;    polymers;    nanoparticles;    core-shell nanostructures;    nanocomposites;    catalysts;    magnetic particles;    nanofabrication;    self-assembly;    etching;    transmission electron microscopy;    Fourier transform infrared spectra;    catalysis;    reduction (chemical);    hydrophobicity;    shrinkage;    yolk-shell microspheres;    temperature switch on-off catalysts;    magnetic nanoparticles;    solvothermal reaction;    poly(N-isopropylacrylamide);    PNIPAM;    etching;    self-assembled nanoparticles;    temperature-responsive shell;    transmission electron microscopy;    Fourier-transform infrared spectroscopy;    environmental temperatures;    4-nitrophenol-4-aminophenol reduction;    hydrophobicity;    shrinking state;    cross-linking degree;    Au-Fe3O4;   

DOI  :  10.1049/mnl.2015.0435

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

SUMMARY In critically ill pediatric patients, central venous access may serve many objectives including the administration of life-saving medications, a secure source of vascular access, and a site for monitoring central venous pressure and obtaining intermittent blood samples. As with any invasive procedure, the risk-benefit ratio must be considered. Although a CVC may be used to provide life-saving therapies, complications and adverse effects may occur. These complications may occur during catheter placement or with its subsequent use. The two factors that have provided the most dramatic impact in decreasing complications include the use of ultrasound for CVC placement and the placement checklist recommended by Dr. Pronovost. Ultrasound has been shown to increase the success rate and decrease the complication rate by helping the clinical avoid inadvertent carotid puncture and excessive depth of needle insertion which may result in pneumothorax. With ongoing use in the ICU setting, a daily reassessment of the need for central venous access should be included into the rounding checklist so that consideration regarding removal of the line is discussed on a daily basis.

【 授权许可】

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