目的探讨绝经后2型糖尿病患者外周血中性粒细胞/淋巴细胞比值(neutrophil lymphocyte ratio,NLR)与骨密度(bone mineral density,BMD)的关系。方法 185例绝经后2型糖尿病患者,根据骨密度值分为骨量正常组、骨量减少组和骨质疏松组。记...目的探讨绝经后2型糖尿病患者外周血中性粒细胞/淋巴细胞比值(neutrophil lymphocyte ratio,NLR)与骨密度(bone mineral density,BMD)的关系。方法 185例绝经后2型糖尿病患者,根据骨密度值分为骨量正常组、骨量减少组和骨质疏松组。记录所有患者临床资料,检测相关生化指标,测量骨密度,比较三组间的差异,同时分析绝经后2型糖尿病患者NLR与BMD的关系。结果与骨量正常组及骨量低下组相比,骨质疏松组的NLR水平明显升高(P<0.05);偏相关分析提示,控制年龄、病程、绝经年限、体质指数(body mass index,BMI),结果显示绝经后2型糖尿病患者BMD与NLR、三酰甘油(triglyceride,TG)呈负相关(r=-0.470,P<0.001;r=-0.218,P=0.003);多因素线性回归分析提示年龄、病程、绝经年龄、NLR是绝经后2型糖尿病患者BMD的主要影响因素。结论绝经后2型糖尿病患者NLR水平升高,与骨密度相关,说明炎症在骨质疏松的发生发展中起到重要作用。展开更多
Currently the service life of CDQ shafts in China is mainly restricted by the properties of the inclined flue bricks.In this work,based on the systematic analysis of the damage mechanism of inclined flue refractories,...Currently the service life of CDQ shafts in China is mainly restricted by the properties of the inclined flue bricks.In this work,based on the systematic analysis of the damage mechanism of inclined flue refractories,high performance mullite-SiC bricks were developed.The bricks were produced by corundum,andalusite,SiC and other high purity raw materials.Metal silicon and alumina ultra micropowder were added to form dispersion multi-phase structure,fortifying the matrix and improving the microstructure.The products have excellent properties such as low porosity,high density,good wear resistance,high refractoriness under load,and good thermal shock resistance.The products can replace the ordinary mullite-SiC bricks and obtain a good service life.展开更多
According to the dual needs of heat transfer and thermal insulation in incinerators,different parts of the incinerators are designed with refractories of different SiC contents.Water vapor is mainly concentrated in th...According to the dual needs of heat transfer and thermal insulation in incinerators,different parts of the incinerators are designed with refractories of different SiC contents.Water vapor is mainly concentrated in the zones of feeding,drying and combustion,and the main damage factors of SiC refractories include high temperature and hydration.The results of hydration resistance of typical SiC-containing refractories show that the higher the SiC content,the worse the hydration resistance.Si_(3)N_(4)-SiC refractories after oxidation treatment have good hydration corrosion resistance,which are appropriate for water-cooled wall of waste incinerators.展开更多
文摘目的探讨绝经后2型糖尿病患者外周血中性粒细胞/淋巴细胞比值(neutrophil lymphocyte ratio,NLR)与骨密度(bone mineral density,BMD)的关系。方法 185例绝经后2型糖尿病患者,根据骨密度值分为骨量正常组、骨量减少组和骨质疏松组。记录所有患者临床资料,检测相关生化指标,测量骨密度,比较三组间的差异,同时分析绝经后2型糖尿病患者NLR与BMD的关系。结果与骨量正常组及骨量低下组相比,骨质疏松组的NLR水平明显升高(P<0.05);偏相关分析提示,控制年龄、病程、绝经年限、体质指数(body mass index,BMI),结果显示绝经后2型糖尿病患者BMD与NLR、三酰甘油(triglyceride,TG)呈负相关(r=-0.470,P<0.001;r=-0.218,P=0.003);多因素线性回归分析提示年龄、病程、绝经年龄、NLR是绝经后2型糖尿病患者BMD的主要影响因素。结论绝经后2型糖尿病患者NLR水平升高,与骨密度相关,说明炎症在骨质疏松的发生发展中起到重要作用。
文摘Currently the service life of CDQ shafts in China is mainly restricted by the properties of the inclined flue bricks.In this work,based on the systematic analysis of the damage mechanism of inclined flue refractories,high performance mullite-SiC bricks were developed.The bricks were produced by corundum,andalusite,SiC and other high purity raw materials.Metal silicon and alumina ultra micropowder were added to form dispersion multi-phase structure,fortifying the matrix and improving the microstructure.The products have excellent properties such as low porosity,high density,good wear resistance,high refractoriness under load,and good thermal shock resistance.The products can replace the ordinary mullite-SiC bricks and obtain a good service life.
文摘According to the dual needs of heat transfer and thermal insulation in incinerators,different parts of the incinerators are designed with refractories of different SiC contents.Water vapor is mainly concentrated in the zones of feeding,drying and combustion,and the main damage factors of SiC refractories include high temperature and hydration.The results of hydration resistance of typical SiC-containing refractories show that the higher the SiC content,the worse the hydration resistance.Si_(3)N_(4)-SiC refractories after oxidation treatment have good hydration corrosion resistance,which are appropriate for water-cooled wall of waste incinerators.
