Based on turbulence theory,a 1.5-order closure turbulence model is established.The model incorporating with the ground surface energy budget equation is constructed by means of a vertical one-dimensional(1-D)40-level ...Based on turbulence theory,a 1.5-order closure turbulence model is established.The model incorporating with the ground surface energy budget equation is constructed by means of a vertical one-dimensional(1-D)40-level grid-mesh.The numerical results reveal the 24-h evolution of the clear planetary boundary layer comparing with the Wangara boundary layer data of days 33—34.The model also takes into account some physical processes of radiative transfer and baroclinicity,revealing some important characteristics observed in the boundary layer,especially for the evolution of the mixed layer and low-level jet.The calculated results are in good agreement with the observational data. On the other hand,we also run the high-resolution model of the planetary boundary layer in the Mesoscale Model Ver- sion 4(MM4)with the same physical processes and initial conditions.The results show that the high-resolution model can not reveal those important characteristics as the 1.5-order closure model did.In general,it is shown that the 1.5-or- der closure turbulence model based on turbulence theory is better in rationality and reality.展开更多
A rapid and sensitive 1.5 order adsorptive stripping voltammetric method fordetendnation of trace mitoxantrone (MXT) is described. The accumulation behavior of MXT on amercury film ndcroelectrode was studied and the p...A rapid and sensitive 1.5 order adsorptive stripping voltammetric method fordetendnation of trace mitoxantrone (MXT) is described. The accumulation behavior of MXT on amercury film ndcroelectrode was studied and the possibility of carrying out 1.5 order differentialadsorptive stripping analysis using mercury-coated carbon fiber ndcroelectrode was demonstrated.Optimal conditions for 1.5 order differential voltammetry monitoring are described. The strippingpeak current is linearly proportional to the concentration of MAT in the range of 1.0×10-6 mol/L 1.0×10-9 and detection licit is 1.5×10-10 mol/L. The relative standard deviation (RSD) is 3.0% at5.0×10-8 (n=8). MXT can be detendned directly in biological samples at physiological levelswithout any separation procedure.展开更多
文摘Based on turbulence theory,a 1.5-order closure turbulence model is established.The model incorporating with the ground surface energy budget equation is constructed by means of a vertical one-dimensional(1-D)40-level grid-mesh.The numerical results reveal the 24-h evolution of the clear planetary boundary layer comparing with the Wangara boundary layer data of days 33—34.The model also takes into account some physical processes of radiative transfer and baroclinicity,revealing some important characteristics observed in the boundary layer,especially for the evolution of the mixed layer and low-level jet.The calculated results are in good agreement with the observational data. On the other hand,we also run the high-resolution model of the planetary boundary layer in the Mesoscale Model Ver- sion 4(MM4)with the same physical processes and initial conditions.The results show that the high-resolution model can not reveal those important characteristics as the 1.5-order closure model did.In general,it is shown that the 1.5-or- der closure turbulence model based on turbulence theory is better in rationality and reality.
文摘A rapid and sensitive 1.5 order adsorptive stripping voltammetric method fordetendnation of trace mitoxantrone (MXT) is described. The accumulation behavior of MXT on amercury film ndcroelectrode was studied and the possibility of carrying out 1.5 order differentialadsorptive stripping analysis using mercury-coated carbon fiber ndcroelectrode was demonstrated.Optimal conditions for 1.5 order differential voltammetry monitoring are described. The strippingpeak current is linearly proportional to the concentration of MAT in the range of 1.0×10-6 mol/L 1.0×10-9 and detection licit is 1.5×10-10 mol/L. The relative standard deviation (RSD) is 3.0% at5.0×10-8 (n=8). MXT can be detendned directly in biological samples at physiological levelswithout any separation procedure.
