IL

Sepsis is one of the main causes of death in adult intensive care units. The major drawbacks of the different methods used for its diagnosis and monitoring are their inability to provide fast responses and unsuitability for bedside use. In this study, performed using a rat sepsis model, we evaluate breath analysis with Ion Mobility Spectrometry (IMS) as a fast, portable and non-invasive strategy.;This study was carried out on 20 Sprague-Dawley rats. Ten rats were injected with lipopolysaccharide from Escherichia coli and ten rats were IP injected with regular saline.

在膜-液界面上引入图案被认为是解决通量降低和污垢问题的有效方法。这里，现研究采用喷雾改性非溶剂诱导相分离( s-NIPS )创建多种微米级结构化界面的有效性。在聚丙烯腈膜上成功地创建了不同尺寸的圆形、三角形和矩形图案。矩形花纹高度在500 ~ 1500   µ m之间变化时，清洁透水率从590  ±   47 L m-2 h-1 bar-1增加到1345  ±   108 L m-2 h-1 bar-1。这与某些BSA对最高模式的排斥损失相吻合，表明这些高大特征的脆弱性质。与平板膜相比，较小的模式高度( 145 ~ 250   µ m )没有发现明显的截留损失，通量仍增加了一倍以上。图样膜的临界压力也大幅度增加，并且与图样高度呈正比关系。这些实验结果与膜-溶液界面剪切诱导的滑移边界层减少了污垢的粘附有关。计算流体动力学模拟进一步表明，由于膜谷区域内的流动收缩，剪切应力值较高。这些发现表明s-NIPS花样膜在长期的工业应用中具有很高的潜力，因为给定的应用需要较少的膜面积和减少清洗干预。