Effect of surfactants on SrM core–shell nanoparticles synthesised at low temperature

Micro & nano letters

article

M. Rajesh Kumar¹  R.Y. Hong¹ 

[1] College of Chemistry, Chemical Engineering and Material Science, Soochow University;School of Chemical Engineering, Fuzhou University

关键词: surfactants;    nanoparticles;    core-shell nanostructures;    nanofabrication;    strontium compounds;    calcination;    X-ray diffraction;    scanning electron microscopy;    transmission electron microscopy;    Fourier transform infrared spectra;    Raman spectra;    precipitation;    core-shell nanoparticles;    surfactant capped nanoparticle morphology;    co-precipitation;    organic template;    oxalic acid;    citric acid addition;    sodium hexametapolyphosphate;    polyvinyl pyrrolidone;    calcinated surfactant;    X-ray diffraction;    scanning electron microscopy;    transmission electron microscopy;    Fourier transform infrared spectroscopy;    Raman spectroscopy;    vibrating sample magnetometer;    SrFe12O19;   

DOI  :  10.1049/mnl.2016.0640

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Introduction: Endotracheal intubation is conventionally performed in the supine position. It may sometimes be requiredto secure the airway in the lateral position, but in lateral position intubation is usually considered to be difficult becausethe laryngeal view is often compromised. Also anesthesiologists are not used to intubation in lateral position. There canbe many methods of securing airway in lateral position besides with the aid of direct laryngoscopy, e.g. through laryngealmask airway or intubating LMA, or with the use of light wand or a video laryngoscope. C-MAC video laryngoscope, anewer device using a modified Macintosh blade, may be useful in intubation in lateral position.Aim of the study: To compare ease of intubation in right and left lateral position using C-MAC video laryngoscope.Methodology: Study was conducted in KLE, Dr Prabhakar Kore Charitable Hospital. 100 patients with ASA grade I andII, randomly allocated to either Group I (right lateral position) or Group II (left lateral position). Patients with predicteddifficult airways were excluded. After induction of anesthesia, the patient was put in lateral position and intubation wasdone by a consultant anesthesiologist who is well-versed in using C-MAC laryngoscope. Time for intubation, number ofattempts, modified Cormack-Lehane grade, mucosal injury, and need of external laryngeal manipulation were noted.Results: Overall intubation success rate was 100%. The time taken in right lateral group was 25.8±9.5 seconds and in leftlateral group was 26.8±5.5 seconds; the difference being statistically not significant. The number of intubation attemptswas not significant. Cormack-Lehane grade was comparable. Mucosal injury and use of external laryngeal manipulationwas more in right lateral group.Conclusion: Intubation can be done in right or left lateral position with similar success and ease. C-MAC videolaryngoscope thus seems to be an effective approach for emergently securing airway in patients positioned laterally.

【 授权许可】

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