Small amounts of silver have been added to the intermetallic compound NiAl with the purpose of improving its mechanical properties. Four ternary NiAl-Ag alloys containing 0.5, 1, 5 and 10 at. pct Ag, denoted as NiAl-0...Small amounts of silver have been added to the intermetallic compound NiAl with the purpose of improving its mechanical properties. Four ternary NiAl-Ag alloys containing 0.5, 1, 5 and 10 at. pct Ag, denoted as NiAl-0.SAg,NiAl-1Ag, NiAl-5Ag and NiAl-10Ag, and the Ag-free NiAl have been oxidized at 1000℃ for 24 h in 0.1 MPa O2 to study the effect of the presence of silver on the oxidation behavior of NiAl. All the NiAl-Ag alloys are composed of a matrix of β-NiAl containing a dispersion of isolated particles of a second silver-rich phase. A continuous external layer of Al2O3 formed on all the alloys. In addition, the scales formed on NiAl-5Ag contained a thin and discontinuous layer of pure silver located at the alloy/Al2O3 interface, while those formed on NiAl-10Ag contained isolated particles as well as discontinuous layers of silver at various locations in the scale extending up to the gas/scale interface. The kinetic curves of all the alloys were generally composed of two main parabolic stages with smaller parabolic rate constants for the final stage. The addition of silver does not significantly affect the oxidation behavior of the NiAl intermetallic compound in all cases, as expected because silver is essentially present only as a second phase due to its very small solubility in β-NiAl.展开更多
Objective:To investigate the correlation among time in range(TIR),hemoglobinA1c(HbA1c),1,5-anhydroglucitol(1,5-AG)and glycated albumin(GA)in patients with 3rd stage of diabetic nephropathy.Methods:HbA1c,1,5-AG and GA ...Objective:To investigate the correlation among time in range(TIR),hemoglobinA1c(HbA1c),1,5-anhydroglucitol(1,5-AG)and glycated albumin(GA)in patients with 3rd stage of diabetic nephropathy.Methods:HbA1c,1,5-AG and GA were detected in120 patients with 3rd stage of diabetic nephropathy and flash glucose monitoring(FGM)was used to observe patients'TIR.The general characteristics,laboratory data and FGM blood glucose data of the groups≥70%and<70%of TIR3.9-10.0 were observed,and the correlation among TIR3.9-10.0,HbA1c,1,5-ag and GA was summarized.Results:There was no significant difference in general information and laboratory data in addition to glycemic monitoring indicators between the two groups of TIR3.9-10.0≥70%and TIR3.9-10.0<70%(P>0.05).After adjusting hemoglobin(HGB),TIR3.9-10.0 was negatively correlated with HbA1c,r=-0.871;after adjusting estimated glomerular filtration rate(eGFR),TIR3.9-10.0 was positively correlated with 1,5-AG concentration,r=0.591;after adjusting serum albumin(ALB),TIR3.9-10.0 was negatively correlated with GA concentration,r=-0.521;all P values were less than 0.05.Conclusion:TIR3.9-10.0 correlated with 1,5-AG and GA in patients with 3rd stage of diabetic nephropathy,which can be considered as an evaluation index of short-term glycemic control in patients with early diabetic nephropathy.展开更多
基金The financial support by the National Natural Science Foundation of China under grant No.50271079 is gratefully acknowledged.
文摘Small amounts of silver have been added to the intermetallic compound NiAl with the purpose of improving its mechanical properties. Four ternary NiAl-Ag alloys containing 0.5, 1, 5 and 10 at. pct Ag, denoted as NiAl-0.SAg,NiAl-1Ag, NiAl-5Ag and NiAl-10Ag, and the Ag-free NiAl have been oxidized at 1000℃ for 24 h in 0.1 MPa O2 to study the effect of the presence of silver on the oxidation behavior of NiAl. All the NiAl-Ag alloys are composed of a matrix of β-NiAl containing a dispersion of isolated particles of a second silver-rich phase. A continuous external layer of Al2O3 formed on all the alloys. In addition, the scales formed on NiAl-5Ag contained a thin and discontinuous layer of pure silver located at the alloy/Al2O3 interface, while those formed on NiAl-10Ag contained isolated particles as well as discontinuous layers of silver at various locations in the scale extending up to the gas/scale interface. The kinetic curves of all the alloys were generally composed of two main parabolic stages with smaller parabolic rate constants for the final stage. The addition of silver does not significantly affect the oxidation behavior of the NiAl intermetallic compound in all cases, as expected because silver is essentially present only as a second phase due to its very small solubility in β-NiAl.
基金2017 Changshu health and Planning Commission funded key project(:csws201710)2019 Changshu science and technology development plan(Social Development)(cs201916).
文摘Objective:To investigate the correlation among time in range(TIR),hemoglobinA1c(HbA1c),1,5-anhydroglucitol(1,5-AG)and glycated albumin(GA)in patients with 3rd stage of diabetic nephropathy.Methods:HbA1c,1,5-AG and GA were detected in120 patients with 3rd stage of diabetic nephropathy and flash glucose monitoring(FGM)was used to observe patients'TIR.The general characteristics,laboratory data and FGM blood glucose data of the groups≥70%and<70%of TIR3.9-10.0 were observed,and the correlation among TIR3.9-10.0,HbA1c,1,5-ag and GA was summarized.Results:There was no significant difference in general information and laboratory data in addition to glycemic monitoring indicators between the two groups of TIR3.9-10.0≥70%and TIR3.9-10.0<70%(P>0.05).After adjusting hemoglobin(HGB),TIR3.9-10.0 was negatively correlated with HbA1c,r=-0.871;after adjusting estimated glomerular filtration rate(eGFR),TIR3.9-10.0 was positively correlated with 1,5-AG concentration,r=0.591;after adjusting serum albumin(ALB),TIR3.9-10.0 was negatively correlated with GA concentration,r=-0.521;all P values were less than 0.05.Conclusion:TIR3.9-10.0 correlated with 1,5-AG and GA in patients with 3rd stage of diabetic nephropathy,which can be considered as an evaluation index of short-term glycemic control in patients with early diabetic nephropathy.
