The integration and accommodation of the wind and solar energy pose great challenges on today’s power system operation due to the intermittent nature and volatility of the wind and solar resources.High efficient larg...The integration and accommodation of the wind and solar energy pose great challenges on today’s power system operation due to the intermittent nature and volatility of the wind and solar resources.High efficient large-scale electrical energy storage is one of the most effective and economical solutions to those problems.After the comprehensive review of the existing storage technologies,this paper proposes an overall design scheme for the Non-supplementary Fired Compressed Air Energy Storage(NFCAES)system,including system design,modeling and efficiency assessment,as well as protection and control.Especially,the design principles of the multistage regenerative,i.e.heat recovery system which is used to fully recycle and utilize the waste heat from compression are provided,so as the overall system efficiency evaluation method.This paper theoretically ascertains the storage decoupling rules in the potential and internal energy of molecular compressed air and reveals the conversion mechanism of gas,heat,power,electricity and other forms of energy.On this basis,a 500-k W physical simulation system of CAES system(TICC-500,Tsinghua-IPCCAS-CEPRI-CAES)is built,which passed a system-wide 420-k W load power generation test with less pollution and zero carbon emissions.Besides,the multi-form energy conversion of multi-stage regenerative CAES and storage efficiency is verified,especially its incomparable superiority in solving the uncertainty problem in wind and solar power generation.Finally,the propaganda and application scenario of the CAES system in China is introduced.展开更多
目的:探讨中风醒脑液对缺血性脑中风恢复早期气虚血瘀证患者神经功能恢复的影响及抗炎、神经保护和改善微循环机制。方法:将128例患者采用随机按数字表法分为对照组和观察组各64例。两组患者基础治疗,口服阿托伐他汀钙片,10 mg·d-1...目的:探讨中风醒脑液对缺血性脑中风恢复早期气虚血瘀证患者神经功能恢复的影响及抗炎、神经保护和改善微循环机制。方法:将128例患者采用随机按数字表法分为对照组和观察组各64例。两组患者基础治疗,口服阿托伐他汀钙片,10 mg·d-1;口服阿司匹林肠溶片,100 mg·d-1;控制血压、血糖,结合现代康复训练。观察组口服中风醒脑液,25 m L/次,3次/d;对照组口服中风醒脑液模拟剂,25 m L/次,3次/d。两组疗程均连续治疗90 d。记录治疗后不同时点美国国立卫生院神经功能缺损(NIHSS)评分;进行治疗前后Barthel指数,改良Rankin量表,Brunel平衡量表(BBA),Fugl-Meyer量表(FMA),气虚血瘀证评分和中风专用生活质量量表(SS-QOL)评分;检测治疗前后脑源性神经营养因子(BDNF),肿瘤坏死因子-α(TNF-α),同型半胱氨酸(Hcy),血清胱抑素C(Cys-C),血小板聚集率(ADP),纤维蛋白原(FIB)水平。结果:观察组临床疗效优于对照组(Z=1.981,P<0.05);观察组在治疗后不同时点NIHSS评分均低于对照组(P<0.01);观察组Barthel指数,FMA,BBA,SS-QOL评分均高于对照组(P<0.01),气虚血瘀证评分低于对照组(P<0.01);观察组残疾程度轻于对照组(Z=1.932,P<0.05);观察组运动障碍程度轻于对照组(Z=2.149,P<0.05);观察组BDNF水平高于对照组(P<0.01),TNF-α,Hcy,Cys-C,ADP和FIB水平均低于对照组(P<0.01)。结论:在常规西医综合康复措施的基础上,中风醒脑液可促进脑梗死恢复期(气虚血瘀证)患者神经功能缺损修复,有利于患者的康复,提高了生活质量,并具有一定的抗炎、改善微循环和神经保护作用,疗效优于单纯的西医综合康复治疗。展开更多
基金Science and Technology Fund of SGCC(Grant No.KJ-2012-627)The National Natural Science Foundation of China(Grant No.51321005)
文摘The integration and accommodation of the wind and solar energy pose great challenges on today’s power system operation due to the intermittent nature and volatility of the wind and solar resources.High efficient large-scale electrical energy storage is one of the most effective and economical solutions to those problems.After the comprehensive review of the existing storage technologies,this paper proposes an overall design scheme for the Non-supplementary Fired Compressed Air Energy Storage(NFCAES)system,including system design,modeling and efficiency assessment,as well as protection and control.Especially,the design principles of the multistage regenerative,i.e.heat recovery system which is used to fully recycle and utilize the waste heat from compression are provided,so as the overall system efficiency evaluation method.This paper theoretically ascertains the storage decoupling rules in the potential and internal energy of molecular compressed air and reveals the conversion mechanism of gas,heat,power,electricity and other forms of energy.On this basis,a 500-k W physical simulation system of CAES system(TICC-500,Tsinghua-IPCCAS-CEPRI-CAES)is built,which passed a system-wide 420-k W load power generation test with less pollution and zero carbon emissions.Besides,the multi-form energy conversion of multi-stage regenerative CAES and storage efficiency is verified,especially its incomparable superiority in solving the uncertainty problem in wind and solar power generation.Finally,the propaganda and application scenario of the CAES system in China is introduced.
文摘目的:探讨中风醒脑液对缺血性脑中风恢复早期气虚血瘀证患者神经功能恢复的影响及抗炎、神经保护和改善微循环机制。方法:将128例患者采用随机按数字表法分为对照组和观察组各64例。两组患者基础治疗,口服阿托伐他汀钙片,10 mg·d-1;口服阿司匹林肠溶片,100 mg·d-1;控制血压、血糖,结合现代康复训练。观察组口服中风醒脑液,25 m L/次,3次/d;对照组口服中风醒脑液模拟剂,25 m L/次,3次/d。两组疗程均连续治疗90 d。记录治疗后不同时点美国国立卫生院神经功能缺损(NIHSS)评分;进行治疗前后Barthel指数,改良Rankin量表,Brunel平衡量表(BBA),Fugl-Meyer量表(FMA),气虚血瘀证评分和中风专用生活质量量表(SS-QOL)评分;检测治疗前后脑源性神经营养因子(BDNF),肿瘤坏死因子-α(TNF-α),同型半胱氨酸(Hcy),血清胱抑素C(Cys-C),血小板聚集率(ADP),纤维蛋白原(FIB)水平。结果:观察组临床疗效优于对照组(Z=1.981,P<0.05);观察组在治疗后不同时点NIHSS评分均低于对照组(P<0.01);观察组Barthel指数,FMA,BBA,SS-QOL评分均高于对照组(P<0.01),气虚血瘀证评分低于对照组(P<0.01);观察组残疾程度轻于对照组(Z=1.932,P<0.05);观察组运动障碍程度轻于对照组(Z=2.149,P<0.05);观察组BDNF水平高于对照组(P<0.01),TNF-α,Hcy,Cys-C,ADP和FIB水平均低于对照组(P<0.01)。结论:在常规西医综合康复措施的基础上,中风醒脑液可促进脑梗死恢复期(气虚血瘀证)患者神经功能缺损修复,有利于患者的康复,提高了生活质量,并具有一定的抗炎、改善微循环和神经保护作用,疗效优于单纯的西医综合康复治疗。
