UV-activated room temperature single-sheet ZnO gas sensor

Micro & nano letters

article

Fanli Meng¹  Hanxiong Zheng²  Yufeng Sun²  Minqiang Li³  Jinhuai Liu³ 

[1] College of Information Science and Engineering, Northeastern University;Department of Mechanical and Automotive Engineering, Anhui Polytechnic University;Nanomaterials and Environment Detection Laboratory, Institute of Intelligent Machines, Chinese Academy of Sciences

关键词: gas sensors;    nanoporous materials;    zinc compounds;    II-VI semiconductors;    wide band gap semiconductors;    porous semiconductors;    nanofabrication;    semiconductor growth;    transmission electron microscopy;    scanning electron microscopy;    nanosensors;    ultraviolet spectra;    visible spectra;    annealing;    organic compounds;    focused ion beam technology;    UV-activated room temperature single-sheet ZnO gas sensor;    ZnO;    time 2 h;    temperature 293 K to 298 K;    ethanol;    focused ion beam technology;    UV-visible spectrum;    high-resolution transmission electron microscopy;    scanning electron microscopy;    annealing;    one-pot wet-chemical method;    nanosheets;    single-sheet porous single-crystalline zinc oxide sheet;   

DOI  :  10.1049/mnl.2017.0148

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Background&Ai  Brachial plexus block is a useful alternative to general anaesthesia. Postoperative analgesia is an added advantage. Midazolam, a water soluble benzodiazepine has been used by various routes to prolong analgesia. The present study was undertaken to assess the analgesic efficacy of midazolam with bupivacaine in brachial plexus block. A prospective, randomized, double blind study was done at Karnataka Institute of Medical Sciences (KIMS), Hubli (India), from 01 March 2008 to 01 March 2009, on 50 adult patients ofASA1 and 2, aged between 18-65 years and scheduled for various upper limb surgeries. Patients were divided into two groups of 25 each. Group B received 30ml of inj. bupivacaine 0.5% +2ml normal saline and group BM received 30ml of inj. bupivacaine 0.5% + inj. midazolam (preservative free) 0.05mg/kg. Patients were observed for sedation, respiratory depression, pulse rate,SBP, DBP, duration of motor block, duration of pain relief and occurrence of any complications. Post operative analgesia was significantly longer (805.04 175.75 min) in group BM, as compared to group B (502.24 52.68 min) with p value 0.05. Hence there was no statistically significant difference. Onset of motor block in group B was 9.96 5.69 min and in group BM 7.92 5.68 min. and p value was >0.05 min. Hence there was not statistically significant difference Mild respiratory depression and sedation occurred intraoperatively in groupBMwhich required no active intervention. Addition of midazolam 50mcg/kg to 30ml of bupivacaine 0.5% for supraclavicular brachial plexus block prolonged sensory blockade and post-operative analgesia without increasing the risk of adverse effects.

【 授权许可】

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