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
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.
文摘实施策略是一种针对性较强的干预措施,旨在促进研究成果或循证实践在日常医疗保健实践中被采纳、实施和维持。若实施策略能够精准匹配实施的障碍因素和促进因素,那么实施成功的可能性更高。实施性研究综合框架(consolidated framework for implementation research,CFIR)⁃实施变革专家共识(expert recommendations for implementing change,ERIC)匹配工具可根据CFIR障碍因素匹配对应的ERIC实施策略,是一种方便、直接的实施策略开发工具。本文详细介绍CFIR⁃ERIC匹配工具的起源与发展,阐述其内容和使用方法,并以简短戒烟干预项目为例介绍如何应用CFIR⁃ERIC匹配工具开发实施策略,最后讨论应用该工具开发实施策略的优势和局限性,以期为相关研究者开发实施策略提供方法学参考。
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。
