Objective: to explore the clinical value of whole course nursing intervention in the nursing of children with respiratory diseases treated by atomization. Methods: 86 children with respiratory diseases were included i...Objective: to explore the clinical value of whole course nursing intervention in the nursing of children with respiratory diseases treated by atomization. Methods: 86 children with respiratory diseases were included in the study. They were randomly divided into group A and group B, and received routine nursing and whole process nursing intervention respectively. The differences between the groups were analyzed. Results: the nursing effective rate and nursing satisfaction in group B were higher than those in group A (P < 0.05);The data of pulmonary function indexes in group B were significantly better than those in group A (P < 0.05). Conclusion: in the nursing of children with respiratory atomization treatment, the whole process nursing can improve the nursing effect and nursing satisfaction, and improve the pulmonary function of children. The effect is remarkable.展开更多
Cementites decomposition of a pearlitic ductile cast iron during graphitization annealing heat treatment was investigated.Fractographies and microstructures of heat treated samples were observed using a scanning elect...Cementites decomposition of a pearlitic ductile cast iron during graphitization annealing heat treatment was investigated.Fractographies and microstructures of heat treated samples were observed using a scanning electron microscope and mechanical properties were measured by a universal tensile test machine.The results indicated that during isothermal annealing at 750°C,the tensile strength of pearlitic ductile cast iron was increased to a peak value at 0.5h,and decreased gradually thereafter but the elongation was enhanced with the increase of annealing time.Moreover,the diffusion coefficient of carbon atoms could be approximately calculated as 0.56μm2/s that could be regarded as the shortrange diffusion.As the holding time was short（0.5h）,diffusion of carbon atoms was incomplete and mainly occurred around the graphites where the morphology of cementites changed from fragmentized shape to granular shape.In addition,the ductile cast iron with tensile strength of 740MPa and elongation of 7% could be achieved after graphitization annealing heat treatment for 0.5h.Two principal factors should be taken into account.First,the decomposition of a small amount of cementites was beneficial for increasing the ductility up to elongation of 7%.Second,the diffusion of carbon atoms from cementites to graphites could improve the binding force between graphites and matrix,enhancing the tensile strength to 740 MPa.展开更多
文摘Objective: to explore the clinical value of whole course nursing intervention in the nursing of children with respiratory diseases treated by atomization. Methods: 86 children with respiratory diseases were included in the study. They were randomly divided into group A and group B, and received routine nursing and whole process nursing intervention respectively. The differences between the groups were analyzed. Results: the nursing effective rate and nursing satisfaction in group B were higher than those in group A (P < 0.05);The data of pulmonary function indexes in group B were significantly better than those in group A (P < 0.05). Conclusion: in the nursing of children with respiratory atomization treatment, the whole process nursing can improve the nursing effect and nursing satisfaction, and improve the pulmonary function of children. The effect is remarkable.
基金supported by the Program for Innovative Research Team in University of Liaoning Province(Grant No.LT2015020)National Natural Science Foundation of China(Grant No.51274142)
文摘Cementites decomposition of a pearlitic ductile cast iron during graphitization annealing heat treatment was investigated.Fractographies and microstructures of heat treated samples were observed using a scanning electron microscope and mechanical properties were measured by a universal tensile test machine.The results indicated that during isothermal annealing at 750°C,the tensile strength of pearlitic ductile cast iron was increased to a peak value at 0.5h,and decreased gradually thereafter but the elongation was enhanced with the increase of annealing time.Moreover,the diffusion coefficient of carbon atoms could be approximately calculated as 0.56μm2/s that could be regarded as the shortrange diffusion.As the holding time was short（0.5h）,diffusion of carbon atoms was incomplete and mainly occurred around the graphites where the morphology of cementites changed from fragmentized shape to granular shape.In addition,the ductile cast iron with tensile strength of 740MPa and elongation of 7% could be achieved after graphitization annealing heat treatment for 0.5h.Two principal factors should be taken into account.First,the decomposition of a small amount of cementites was beneficial for increasing the ductility up to elongation of 7%.Second,the diffusion of carbon atoms from cementites to graphites could improve the binding force between graphites and matrix,enhancing the tensile strength to 740 MPa.
