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546 results on '"Zhong, Zhaoping"'

120. Comparison of Laminoplasty vs. Laminectomy for Cervical Spondylotic Myelopathy: A Systematic Review and Meta-Analysis

Author

Zhao, Huaguo, Ren, Rong, Ma, Weihu, Xu, Song, Peng, Linrui, Zhong, Zhaoping, and Zheng, Yan

Subjects
meta-analysis, systematic review, RD1-811, laminoplasty, Surgery, laminectomy, cervical myelopathy
Abstract

ObjectivesLaminoplasty (LP) and laminectomy (LC) with or without fusion are recommended as treatment procedures for cervical spondylotic myelopathy (CSM). The purpose of this study is to conduct a meta-analysis to analyze the results of CSM patients undergoing LP or LC surgery.MethodsWe systematically and comprehensively searched Web of Science, Cochrane Library, PubMed, EMBASE, OVID, VIP database, Google Scholar, Chinese Bio-medicine Literature database, and China Scientific Journal Full-text database to July 2021 for randomized controlled trials (RCTs) and observational case series that compared LP and LC in patients with CSM. The main endpoints were the surgical process, radiographic outcomes, clinical outcomes, and surgical complications.ResultsA total of 19 were included the inclusion criteria in this meta-analysis (n = 4,348 patients). There was no significant difference in range of motion (ROM), sagittal vertical axis (SVA), Japanese Orthopedic Association (JOA), Cobb angle, visual analog scale (VAS), cervical curvature index (CCI), Nurick score, Neck Dysfunction Index (NDI), and complications. LP was found to be superior than LC in terms of complications of C5 radiculopathy and surperficial infection.ConclusionOur results indicate that LP can achieve better results in C5 radiculopathy and superficial infection in surgical treatment of CSM compared with LC. Further high-quality research is warranted to further verify our findings.Systematic Review RegistrationPRISMA: CRD42018107070.

Published
2022
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147. Environmental impact comparison of wheat straw fast pyrolysis systems with different hydrogen production processes based on life cycle assessment.

Author

Zheng, Xiang, Zhong, Zhaoping, Zhang, Bo, Du, Haoran, Wang, Wei, and Li, Qian

Subjects
WHEAT straw, PRODUCT life cycle assessment, HYDROGEN production, MANUFACTURING processes, STEAM reforming, PYROLYSIS
Abstract

This study aimed to evaluate the environmental impact of 1000 kg h−1 wheat straw to produce biofuel via fast pyrolysis with three different hydrogen production processes by the life cycle assessment (LCA) based on Chinese Life Cycle Database (CLCD). The primary energy depletion (PED), global warming potential (GWP), abiotic depletion potential (ADP) and respiratory inorganics (RI) impact categories of 1 MJ biofuel produced were employed for comparison. In case 1, the hydrogen was derived from natural gas steam reforming, and all the bio-oil was hydrotreated to produce the biofuel. In case 2, a part of the aqueous phase was reformed to produce hydrogen, whereas the remaining bio-oil was hydrotreated to produce biofuel. In case 3, all the aqueous phase of bio-oil was reformed to produce hydrogen, a part of hydrogen generated by reforming was used to oil phase hydrotreated and the excess hydrogen was considered as a co-product. Our results show that the PED, GWP, ADP and RI of case 3 are 0.1355 MJ, −17.96 g CO2eq., 0.0338 g antimonyeq and 0.0461 g PM2.5eq.. Compared with conventional diesel, the PED, GWP, ADP and RI of case 3 were reduced by 89.81, 117.44, 1.74 and 85.03%, respectively. The results of sub-process contribution analysis and sensitivity analysis suggested that the electricity consumption for the bio-oil production has the maximal effect on the total PED, GWP and RI of case 3, whereas the amount of fertilizers in the biomass production sub-process has the maximal effect on the total ADP. [ABSTRACT FROM AUTHOR]

Published
2022
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