Annual discharge and annual suspended sediment loads of Beipei Hydrological Station of the Jialing River catchment were analyzed to describe the trend of Jialing River over the last five decades (1956-2006). These loa...Annual discharge and annual suspended sediment loads of Beipei Hydrological Station of the Jialing River catchment were analyzed to describe the trend of Jialing River over the last five decades (1956-2006). These loads were also analyzed to ascertain the influential factors associated with its variation with the help of Kendall's Tau-b correlation analysis and regression analysis. The results indicated that the Jialing River annual discharge showed no significant trend at >95% confidence level while the annual sediment load appeared to have a significant decrease trend over the last 50 years. A decrease in the annual sediment load was particularly apparent after the year 1985, at which a substantial shift in the sediment level occurred. This shift is attributed to the construction of numerous dams in 1980s. However, after the year of 1985, two periodical stages (1986-1991 and 1992-2006) with distinct sediment load and sediment-runoff ratio were identified. The period 1992-2006 is characterised by low sediment load, which is most probably due to the impact of large scale of soil and water conservation, which took place at the end of the 1980s. Last, models describing the relationship between the discharge and the sediment load, discharge and sediment-runoff ratio as well as between the sediment load and sediment-runoff ratio were constructed.展开更多
Objective:The lack of a simple criterion for gastric carcinoma creates a persistent challenge for clinicians trying to provide patients with useful prognostic information.The aim of this study was to identify baseline...Objective:The lack of a simple criterion for gastric carcinoma creates a persistent challenge for clinicians trying to provide patients with useful prognostic information.The aim of this study was to identify baseline prognostic factors,and use this information to establish a simple criterion to predict outcome in gastric carcinoma.Methods:Between 2005 and 2010, 155 patients with gastric carcinoma,were enrolled.Clinicopathologic prognostic factors were evaluated by univariate and multivariate analysis.Results:Of the 155 patients,48(30.9%)died.Three independent poor prognostic factors were identified by multivariate analysis:gross type>or=3(hazard ratio[HR],1.564;95%CI,1.067 to 2.294),peritoneal dissemination (HR,3.750;95%CI,1.760 to 7.989)and lymphatic duct invasion(HR,3.578;95%CI,1.422 to 9.004).One point was added for each category among three independent prognostic factors.Prognostic score(PS)was determined by an aggregate of these points for each category.There existed a significant difference between survival of patients with PS 0 or 1 and 2(P< 0.0001).Conclusion:Three poor prognostic factors were identified and a simple criteria was devised.Information from this analysis can be used to predict prognosis of gastric carcinoma with a strict stratification.展开更多
基金supported by the National Natural Science Foundation (40901135)973 program (2007CB40720301)+1 种基金National Key Technology R&D Program (2008BAD98B02)the open fund of Institute of Changjiang River Scientific Research program (YWF0716/TB01)
文摘Annual discharge and annual suspended sediment loads of Beipei Hydrological Station of the Jialing River catchment were analyzed to describe the trend of Jialing River over the last five decades (1956-2006). These loads were also analyzed to ascertain the influential factors associated with its variation with the help of Kendall's Tau-b correlation analysis and regression analysis. The results indicated that the Jialing River annual discharge showed no significant trend at >95% confidence level while the annual sediment load appeared to have a significant decrease trend over the last 50 years. A decrease in the annual sediment load was particularly apparent after the year 1985, at which a substantial shift in the sediment level occurred. This shift is attributed to the construction of numerous dams in 1980s. However, after the year of 1985, two periodical stages (1986-1991 and 1992-2006) with distinct sediment load and sediment-runoff ratio were identified. The period 1992-2006 is characterised by low sediment load, which is most probably due to the impact of large scale of soil and water conservation, which took place at the end of the 1980s. Last, models describing the relationship between the discharge and the sediment load, discharge and sediment-runoff ratio as well as between the sediment load and sediment-runoff ratio were constructed.
文摘Objective:The lack of a simple criterion for gastric carcinoma creates a persistent challenge for clinicians trying to provide patients with useful prognostic information.The aim of this study was to identify baseline prognostic factors,and use this information to establish a simple criterion to predict outcome in gastric carcinoma.Methods:Between 2005 and 2010, 155 patients with gastric carcinoma,were enrolled.Clinicopathologic prognostic factors were evaluated by univariate and multivariate analysis.Results:Of the 155 patients,48(30.9%)died.Three independent poor prognostic factors were identified by multivariate analysis:gross type>or=3(hazard ratio[HR],1.564;95%CI,1.067 to 2.294),peritoneal dissemination (HR,3.750;95%CI,1.760 to 7.989)and lymphatic duct invasion(HR,3.578;95%CI,1.422 to 9.004).One point was added for each category among three independent prognostic factors.Prognostic score(PS)was determined by an aggregate of these points for each category.There existed a significant difference between survival of patients with PS 0 or 1 and 2(P< 0.0001).Conclusion:Three poor prognostic factors were identified and a simple criteria was devised.Information from this analysis can be used to predict prognosis of gastric carcinoma with a strict stratification.
