Number of reservoirs in China ranks the first in the world. Due to the complex geology, and superimposing rainfall and reservoir water fluctuation, the bank collapse chain is prone to disasters. The Yangtze River Rese...Number of reservoirs in China ranks the first in the world. Due to the complex geology, and superimposing rainfall and reservoir water fluctuation, the bank collapse chain is prone to disasters. The Yangtze River Reservoir is key geological disaster prevention area. Studying the process of reservoir disaster is significant because of the limited territorial space utilization. Scientific and technological issues, i.e., the mechanism of bank collapse disaster chain of large reservoirs, the interaction mechanism of bank collapse disaster chain and territorial space utilization, the early identification, monitoring technology and ecological prevention and control technology system of disaster chain, and the territorial space geological safety and control technology system are focused. We consider the material transformation, energy transfer and information transmission in disaster chain;adopt the survey, Space-Air-Ground integrated monitoring, theoretical analysis, numerical simulation and the multidisciplinary research methods;reveal the chain source development, evolution process of secondary and derivative disasters;explore the interaction mechanism of disaster chain and territorial space utilization;construct the system of early identification, monitoring, early warning, control and ecological preven-tion to achieve Emission Peak and Carbon Neutrality;provide theoretical and technical support for the territorial space geological safety, regulation and utilization of large reservoirs.展开更多
目的以Meta分析的方法评价关节镜下内固定和切开复位内固定对治疗轻型胫骨平台骨折的疗效比较。方法计算机检索国内外有关关节镜下内固定治疗轻型胫骨平台骨折的相关研究,通过进行文献质量评价,应用Rev Man 5.3分析软件进行Meta分析。...目的以Meta分析的方法评价关节镜下内固定和切开复位内固定对治疗轻型胫骨平台骨折的疗效比较。方法计算机检索国内外有关关节镜下内固定治疗轻型胫骨平台骨折的相关研究,通过进行文献质量评价,应用Rev Man 5.3分析软件进行Meta分析。结果共纳入随机对照研究(RCT)文献14篇,共计1 364例患者。其中,关节镜下内固定组680例,切开复位内固定组684例。Meta分析结果显示,关节镜下内固定与切开复位内固定相比,能明显减少术后短期和长期术后并发症的发生(P=0.000);且能缩短手术时间,减少切口长度,减少术中出血量(P=0.000),缩短住院时间、完全负重下地时间、骨折愈合时间(P=0.000);在中短期功能评分优良率方面,关节镜更有优势(P=0.004),差异均有统计学意义。结论该系统评价为关节镜下内固定治疗轻型胫骨平台骨折的疗效及并发症方面提供循证医学的证据支持,对手术时间、切口长度、术中出血量、住院时间、下地负重时间、骨折愈合时间、术后6个月、12功能评分优良率和术口感染等并发症的有效性及安全性进行系统评价,与传统切开复位内固定术进行比较,关节镜下内固定治疗轻型胫骨平台骨折是安全可靠的。展开更多
世界卫生组织(World Health Organization,WHO)在1958年发布的技术报告中开始关注空气污染对人体健康的损害[1].基于科学界在其后近30年对该问题的研究和认知的逐步积累,WHO欧洲办事处于1987年发布了首个基于健康保护的空气质量指南(air...世界卫生组织(World Health Organization,WHO)在1958年发布的技术报告中开始关注空气污染对人体健康的损害[1].基于科学界在其后近30年对该问题的研究和认知的逐步积累,WHO欧洲办事处于1987年发布了首个基于健康保护的空气质量指南(air quality guideline,AQG)。展开更多
文摘Number of reservoirs in China ranks the first in the world. Due to the complex geology, and superimposing rainfall and reservoir water fluctuation, the bank collapse chain is prone to disasters. The Yangtze River Reservoir is key geological disaster prevention area. Studying the process of reservoir disaster is significant because of the limited territorial space utilization. Scientific and technological issues, i.e., the mechanism of bank collapse disaster chain of large reservoirs, the interaction mechanism of bank collapse disaster chain and territorial space utilization, the early identification, monitoring technology and ecological prevention and control technology system of disaster chain, and the territorial space geological safety and control technology system are focused. We consider the material transformation, energy transfer and information transmission in disaster chain;adopt the survey, Space-Air-Ground integrated monitoring, theoretical analysis, numerical simulation and the multidisciplinary research methods;reveal the chain source development, evolution process of secondary and derivative disasters;explore the interaction mechanism of disaster chain and territorial space utilization;construct the system of early identification, monitoring, early warning, control and ecological preven-tion to achieve Emission Peak and Carbon Neutrality;provide theoretical and technical support for the territorial space geological safety, regulation and utilization of large reservoirs.
文摘目的以Meta分析的方法评价关节镜下内固定和切开复位内固定对治疗轻型胫骨平台骨折的疗效比较。方法计算机检索国内外有关关节镜下内固定治疗轻型胫骨平台骨折的相关研究,通过进行文献质量评价,应用Rev Man 5.3分析软件进行Meta分析。结果共纳入随机对照研究(RCT)文献14篇,共计1 364例患者。其中,关节镜下内固定组680例,切开复位内固定组684例。Meta分析结果显示,关节镜下内固定与切开复位内固定相比,能明显减少术后短期和长期术后并发症的发生(P=0.000);且能缩短手术时间,减少切口长度,减少术中出血量(P=0.000),缩短住院时间、完全负重下地时间、骨折愈合时间(P=0.000);在中短期功能评分优良率方面,关节镜更有优势(P=0.004),差异均有统计学意义。结论该系统评价为关节镜下内固定治疗轻型胫骨平台骨折的疗效及并发症方面提供循证医学的证据支持,对手术时间、切口长度、术中出血量、住院时间、下地负重时间、骨折愈合时间、术后6个月、12功能评分优良率和术口感染等并发症的有效性及安全性进行系统评价,与传统切开复位内固定术进行比较,关节镜下内固定治疗轻型胫骨平台骨折是安全可靠的。
文摘世界卫生组织(World Health Organization,WHO)在1958年发布的技术报告中开始关注空气污染对人体健康的损害[1].基于科学界在其后近30年对该问题的研究和认知的逐步积累,WHO欧洲办事处于1987年发布了首个基于健康保护的空气质量指南(air quality guideline,AQG)。
