Polystyrene microspheres-templated preparation of hierarchical porous modified red mud with high rhodamine B dye adsorption performance

Micro & nano letters

article

Jianliang Cao¹  Yan Wang²  Zhaoli Yan¹  Gaojie Li¹ 

[1] School of Materials Science and Engineering, Cultivating Base for Key Laboratory of Environment-Friendly Inorganic Materials in University of Henan Province, Henan Polytechnic University;School of Safety Science and Engineering, Henan Polytechnic University

关键词: polymers;    nanoporous materials;    dyes;    adsorption;    mesoporous materials;    surface texture;    surface morphology;    X-ray diffraction;    scanning electron microscopy;    transmission electron microscopy;    pH;    industrial waste;    wastewater treatment;    nanoparticles;    waste disposal;    nanofabrication;    liquid waste problems;    solid waste disposal;    environmental pollution;    wastewater treatment;    industrial solid wastes;    pH;    adsorption capacity;    uniform pore-size distribution;    high surface area;    hierarchical macroporous-mesoporous nanoparticle;    N2 sorption;    transmission electron microscopy;    scanning electron micrograph;    X-ray diffraction;    MRM-PS adsorbent morphology;    MRM-PS adsorbent texture;    waste red mud;    hierarchical macroporous-mesoporous structure;    high rhodamine B dye adsorption;    hierarchical porous modified red mud;    polystyrene microspheres-templated preparation;   

DOI  :  10.1049/mnl.2014.0021

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Background & Objectives: The superior hypogastric plexus block (SHPB) has been extensively used for treating pelvic cancer pain and chronic pelvic pain, but not as a modality of postoperative analgesia. Currently, postoperative analgesia following gynecological laparotomies is managed mainly by parenteral NSAIDS, opioids or by epidural block. We propose that the intraoperative superior hypogastric plexus block could be a safe and an effective method for managing postoperative pain in patientsundergoing gynecological laparotomies.Methodology: It was a prospective randomized case control study. Sixty female patients of ages 18-60 y belonging to ASA grade 1 and 2 undergoing gynecological laparotomies were allocated equally into two groups, study and control group. Both groups received general anesthesia. At the end of surgery, the Study Group received. Postoperative pain was assessed with VAS score, patient’s vital parameters and amount of morphine consumed by patient controlled analgesia at 0, 2, 6, 12, 24 and 48 h.Results: The VAS score for pain showed significant difference between Study Group and Control Group at 0 h (p = 0.033), 2 h (p < 0.0001), 6 h (p < 0.0001), 12 h (p < 0.0001) and 24 h (p = 0.003) but not at 48 h (p = 0.085). This showed that the block was more effective up to 24 h. There was significant difference of 33.6% (p < 0.0001) in morphine consumption between study (36.03 mg) and control (54.33 mg) groups.Conclusions: We conclude that superior hypogastric plexus block is a simple, safe and effective without any major complications and has a short learning curve. It has a high success rate for majority of gynecological laparotomies.

【 授权许可】

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