Synthesis of a nanostructure ion sieve with improved lithium adsorption capacity

Micro & nano letters

article

Saeed Zandevakili¹  Mohammad Ranjbar²  Maryam Ehteshamzadeh³ 

[1] Department of Mining Engineering, Shahid Bahonar University;Mineral Industries Research Centre, Shahid Bahonar University;Department of Material Engineering, Shahid Bahonar University

关键词: nanoparticles;    nanofabrication;    adsorption;    Taguchi methods;    lithium compounds;    manganese compounds;    LiO;    MnO;    Li;    lithium uptake capacity;    L9 orthogonal array;    Taguchi experimental design method;    lithium-enriched solution;    Li-Mn mole ratio;    lithium salt compound;    manganese salt compound;    maximum exchange capacity;    industrial extraction;    limiting parameter;    lithium adsorption capacity;    nanostructure ion sieve synthesis;   

DOI  :  10.1049/mnl.2014.0086

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Background and Aim: Supraglottic airway devices are now widely used for surgery requiring general anesthesia. They provide a perilaryngeal seal with a cuff and an alternative to tracheal intubation. The I-gel is a novel and innovative supraglottic airway management device. Present study was performed to compare hemodynamic effects of I-gel insertion and tracheal intubation in elective pediatric surgical patients.Methodology: A prospective randomized, comparative study was performed in 120 pediatric patients who were divided equally in to two groups (60 each). Group-1 used endotracheal tube and Group-2 used I-gel for airway maintenance. The two devices were compared with regard to the insertion characteristics, hemodynamics and postoperative airway complications.Results: There was a significant increase in the mean arterial blood pressure after the insertion of the endotracheal tube compared with the insertion of the I-gel. In our study, both the devices were inserted in first attempt in all pediatric patients. So, first time insertion success rate was100% for both, ETT and I-gel.Conclusion: The hemodynamic stress response in terms of heart rate, mean blood pressure were significantly higher after insertion as well as after removal of endotracheal tube than after insertion and removal of I-gel in pediatric patients. Thus, I-gel provides a good alternative for airway maintenance in general anesthesia for pediatric patients in whom pressure response to tracheal intubation is detrimental and must be avoided.

【 授权许可】

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