Because of the construction o f the Three Gorge Project (TGP), the local turbulent flow, compared to the original, h as been changed greatly. In order to analyze the variation of hydrodynamic feat ure in detail, a 3-D...Because of the construction o f the Three Gorge Project (TGP), the local turbulent flow, compared to the original, h as been changed greatly. In order to analyze the variation of hydrodynamic feat ure in detail, a 3-D mathematical model was established to simulate the turbule nt flow in the corresponding area. The results of computation indicate that grea t changes of flow took placed in the area close to the cofferdam, but the area i s not large. The results are in agreement with that of the obtained.展开更多
目的分析重症患者血液净化低血压预防及管理的促进与障碍因素,并构建实施策略,以优化临床实践。方法基于重症患者血液净化低血压预防及管理的最佳证据制定审查指标,对临床实践现状进行基线调查。应用实施性研究综合框架(consolidated fr...目的分析重症患者血液净化低血压预防及管理的促进与障碍因素,并构建实施策略,以优化临床实践。方法基于重症患者血液净化低血压预防及管理的最佳证据制定审查指标,对临床实践现状进行基线调查。应用实施性研究综合框架(consolidated framework for implementation research,CFIR),结合文献回顾与临床实际构建访谈提纲,并进行半结构式访谈,识别重症患者血液净化低血压预防及管理的障碍和促进因素,并应用实施变革专家共识(expert recommendations for implementing change,ERIC)制定促进临床实践变革的实施策略。结果基线审查结果:4项审查指标的依从率为0,5项审查指标的依从率<60%,8项审查指标的依从率为100%。障碍因素主要包括:知识更新滞后、方案实施复杂且不够细化、重症患者病情复杂、资源与管理欠缺。促进因素主要有:方案源于高质量的指南与专家共识、医院支持循证实践、重视患者安全。ERIC匹配了46个1级实施策略和18个2级实施策略。结论CFIR有助于系统、全面地分析重症患者血液净化低血压预防及管理的障碍和促进因素,ERIC可以指导构建可操作的实施策略,使用实施科学方法和逻辑模型可能会提高重症患者血液净化低血压预防及管理的落实,推动证据的临床转化。展开更多
Basic structure and algorithm of leaf mechanism photosynthesis model were described in first part of this study based on former researcher results. Then, considering some environmental factors influencing on leaf ph...Basic structure and algorithm of leaf mechanism photosynthesis model were described in first part of this study based on former researcher results. Then, considering some environmental factors influencing on leaf photosynthesis, three numerical sensitivity experiments were carried out. We simulated the sing le leaf net CO2 assimilation, which acts as a function of different light, carbo n dioxide and temperature conditions. The relationships between leaf net photosy nthetic rate of C3 and C4 plant with CO2 concentration intercellular, leaf tempe rature, and photosynthetic active radiation (PAR) were presented, respectively. The results show the numerical experiment may indicate the main characteristic o f plant photosynthesis in C3 and C4 plant, and further can be used to integrate with the regional climate model and act as land surface process scheme, and bett er understand the interaction between vegetation and atmosphere.展开更多
Basic structure and algorithm of leaf mechanism photosynthesis model were described in first part of this study based on former researcher results. Then, considering some environmental factors influencing on leaf ph...Basic structure and algorithm of leaf mechanism photosynthesis model were described in first part of this study based on former researcher results. Then, considering some environmental factors influencing on leaf photosynthesis, three numerical sensitivity experiments were carried out. We simulated the sing le leaf net CO2 assimilation, which acts as a function of different light, carbo n dioxide and temperature conditions. The relationships between leaf net photosy nthetic rate of C3 and C4 plant with CO2 concentration intercellular, leaf tempe rature, and photosynthetic active radiation (PAR) were presented, respectively. The results show the numerical experiment may indicate the main characteristic o f plant photosynthesis in C3 and C4 plant, and further can be used to integrate with the regional climate model and act as land surface process scheme, and bett er understand the interaction between vegetation and atmosphere.展开更多
文摘Because of the construction o f the Three Gorge Project (TGP), the local turbulent flow, compared to the original, h as been changed greatly. In order to analyze the variation of hydrodynamic feat ure in detail, a 3-D mathematical model was established to simulate the turbule nt flow in the corresponding area. The results of computation indicate that grea t changes of flow took placed in the area close to the cofferdam, but the area i s not large. The results are in agreement with that of the obtained.
文摘目的分析重症患者血液净化低血压预防及管理的促进与障碍因素,并构建实施策略,以优化临床实践。方法基于重症患者血液净化低血压预防及管理的最佳证据制定审查指标,对临床实践现状进行基线调查。应用实施性研究综合框架(consolidated framework for implementation research,CFIR),结合文献回顾与临床实际构建访谈提纲,并进行半结构式访谈,识别重症患者血液净化低血压预防及管理的障碍和促进因素,并应用实施变革专家共识(expert recommendations for implementing change,ERIC)制定促进临床实践变革的实施策略。结果基线审查结果:4项审查指标的依从率为0,5项审查指标的依从率<60%,8项审查指标的依从率为100%。障碍因素主要包括:知识更新滞后、方案实施复杂且不够细化、重症患者病情复杂、资源与管理欠缺。促进因素主要有:方案源于高质量的指南与专家共识、医院支持循证实践、重视患者安全。ERIC匹配了46个1级实施策略和18个2级实施策略。结论CFIR有助于系统、全面地分析重症患者血液净化低血压预防及管理的障碍和促进因素,ERIC可以指导构建可操作的实施策略,使用实施科学方法和逻辑模型可能会提高重症患者血液净化低血压预防及管理的落实,推动证据的临床转化。
基金Natural Science Foundation of China (Grant No. 39900084)
文摘Basic structure and algorithm of leaf mechanism photosynthesis model were described in first part of this study based on former researcher results. Then, considering some environmental factors influencing on leaf photosynthesis, three numerical sensitivity experiments were carried out. We simulated the sing le leaf net CO2 assimilation, which acts as a function of different light, carbo n dioxide and temperature conditions. The relationships between leaf net photosy nthetic rate of C3 and C4 plant with CO2 concentration intercellular, leaf tempe rature, and photosynthetic active radiation (PAR) were presented, respectively. The results show the numerical experiment may indicate the main characteristic o f plant photosynthesis in C3 and C4 plant, and further can be used to integrate with the regional climate model and act as land surface process scheme, and bett er understand the interaction between vegetation and atmosphere.
基金Natural Science Foundation of China (Grant No. 39900084)
文摘Basic structure and algorithm of leaf mechanism photosynthesis model were described in first part of this study based on former researcher results. Then, considering some environmental factors influencing on leaf photosynthesis, three numerical sensitivity experiments were carried out. We simulated the sing le leaf net CO2 assimilation, which acts as a function of different light, carbo n dioxide and temperature conditions. The relationships between leaf net photosy nthetic rate of C3 and C4 plant with CO2 concentration intercellular, leaf tempe rature, and photosynthetic active radiation (PAR) were presented, respectively. The results show the numerical experiment may indicate the main characteristic o f plant photosynthesis in C3 and C4 plant, and further can be used to integrate with the regional climate model and act as land surface process scheme, and bett er understand the interaction between vegetation and atmosphere.
文摘以东海海洋微生物群落为研究对象,用稀释平板分离法,从海泥和海水中得到542株分离物。随机选取58株发酵培养,将所有发酵菌株的16S rDNA基因扩增,并用限制性内切酶HinfI对PCR产物进行ARDRA(Amplified rDNA restriction analysis)多态性分析,共得到16种不同的操作分类单元(Operational Taxonom ic Un it,OTU)。其中OTU5和OTU7所包含的菌株分别占总分离物的32.7%和19.0%,为优势分离物。优势分离物的ER IC-PCR基因组指纹图分析表明,前者的19株分离物共有12种不同的指纹图类型,而后者的11株分离物有4种。结果显示,东海海域的海水和底泥具有明显的微生物种群多样性特征。
