Synthesis of porous silica materials with tunable morphologies and nanopore sizes using heterogemini surfactants

Micro & nano letters

article

Xuanxian Wu¹  Sili Yi¹  Shuolin Li¹  Linxi Hou¹ 

[1] College of Chemical Engineering, Fuzhou University

关键词: silicon compounds;    porous materials;    surface morphology;    porosity;    surfactants;    scanning electron microscopy;    transmission electron microscopy;    adsorption;    desorption;    nanofabrication;    porous silica materials;    morphologies;    nanopore sizes;    heterogemini surfactants;    Stober method;    alkyl chain length;    scanning electron microscopy;    transmission electron microscopy;    nitrogen adsorption-desorption analysis;    hierarchical pore size distribution;    SiO2;   

DOI  :  10.1049/mnl.2017.0819

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

From a conceptual and clinical point of view, a comprehensive interpretation of risk factors leading to gastro-esophageal reflux (GER) is translated in this review into an “oil well” analogy: w hereas gastric contents represent the oil deposit, groups of “on-off” events reflect the presence or absence of specific risk factors and events, respectively, similar to opening and closing a drilling tower. In this dynamic analogy for both the risk and magnitude of GER, we emphasize that generalization of GER risk factors in clinical settings is extremely relevant but fraught with complexity, difficulties and limitations. Therefore, the primary purpose of this review is to examine the effect of the interaction between body positioning, gastrointestinal function, tube feeding, drugs and additional factors on the aspiration risk in critically ill, tube-fed patients.

【 授权许可】

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