In this paper we study the average σ-K width and the average σ-linear width of the unit ball of l;(R) inl;(R). The exact values of these widths are calculated and an optimal subspace with the optimal linear oper...In this paper we study the average σ-K width and the average σ-linear width of the unit ball of l;(R) inl;(R). The exact values of these widths are calculated and an optimal subspace with the optimal linear opera-tor (for the σ- linear width) are identified.展开更多
N-methyl-methylthio-2-nitroethenarnine is synthesized when MeNO2,CS2,anhydrous EtOH,KOH,CH3NH2,(CH3)2SO4 are used as raw materials and through the condensation-aminoation-methylation in the experiment.In aminoation an...N-methyl-methylthio-2-nitroethenarnine is synthesized when MeNO2,CS2,anhydrous EtOH,KOH,CH3NH2,(CH3)2SO4 are used as raw materials and through the condensation-aminoation-methylation in the experiment.In aminoation and methylation progresses,water is used as solvent and substituted traditional organic solvent.Using the new technics not only lower the cost of production,but also eliminate solvent pollution.The overall yield of the produc is 40.5%.展开更多
目的探讨绝经后女性2型糖尿病伴骨质疏松患者骨密度与N-端骨钙素(N-MID)、总Ⅰ型胺原氨基端延长肽(T-P1NP)、G-胶原特殊序列(β-CTX)、胰岛素样生长因子-1(IGF-1)的相关性研究。方法选取2017年3月—2019年8月该院收治的绝经后女性2型糖...目的探讨绝经后女性2型糖尿病伴骨质疏松患者骨密度与N-端骨钙素(N-MID)、总Ⅰ型胺原氨基端延长肽(T-P1NP)、G-胶原特殊序列(β-CTX)、胰岛素样生长因子-1(IGF-1)的相关性研究。方法选取2017年3月—2019年8月该院收治的绝经后女性2型糖尿病伴骨质疏松患者321例,根据骨密度水平将其分为3组,分别是:骨量正常组107例、骨量减少组107例及骨质疏松组107例。比较3组一般资料,3组IGF-1、25-羟维生素D[25(OH)D]、β-CTX、T-P1NP、N-MID水平及3组骨代谢标志物、骨密度、24 h UPro及BMI的相关性。结果 3组糖化血红蛋白(HbA1c)、空腹血糖(FPG)、体质指数(BMI)、糖尿病病程、绝经年限及年龄间比较,差异均无统计学意义(t=1.063,P>0.05;t=1.425,P>0.05;t=1.987,P>0.05;t=1.006,P>0.05;t=1.366,P>0.05;t=1.682,P>0.05)。各部位的骨密度中骨质疏松组低于骨量正常组和骨量减少组(P<0.05),骨量正常组的骨密度高于对照组(P<0.05);25(OH)D属于正常值。骨量减少组、骨质疏松组的IGF-1、T-P1NP及N-MID均低于骨量正常组[(131.04±13.24)μg/L、(12.24±2.76)μg/L及(5.05±2.37)μg/L、骨量疏松组分别为(110.24±12.35)μg/L、(9.17±2.87)μg/L及(4.93±2.13)μg/L均低于骨量正常组(162.12±16.11)μg/L、(19.84±2.82)μg/L及(7.11±2.04)μg/L,差异有统计学意义(P<0.05)],骨质疏松组与骨量减少组β-CTX分别为(1.96±0.57)μg/L、(2.13±0.72)μg/L,均高于骨量正常组(1.33±0.37)μg/L,差异有统计学意义(P<0.05)。BMI、N-MID、25(OH)D;、IGF-1及T-P1NP和骨密度呈现正相关(t=2.264,P=0.113;t=2.416,P=0.002;t=2.268,P=0.013;t=2.176,P=0.012;t=3.012,P=0.002),与24 h UPro、β-CTX呈现负相关(t=-2.143,P=0.016;t=-2.382,P=0.014)。结论绝经后女性2型糖尿病伴骨质疏松患者骨密度和N-MID、T-P1NP、β-CTX及IGF-1具有一定的相关性,对患者实施相关的研究后,可以及时实施抗骨质疏松治疗或者预测骨折风险,临床上应当进一步推广应用。展开更多
文摘In this paper we study the average σ-K width and the average σ-linear width of the unit ball of l;(R) inl;(R). The exact values of these widths are calculated and an optimal subspace with the optimal linear opera-tor (for the σ- linear width) are identified.
文摘N-methyl-methylthio-2-nitroethenarnine is synthesized when MeNO2,CS2,anhydrous EtOH,KOH,CH3NH2,(CH3)2SO4 are used as raw materials and through the condensation-aminoation-methylation in the experiment.In aminoation and methylation progresses,water is used as solvent and substituted traditional organic solvent.Using the new technics not only lower the cost of production,but also eliminate solvent pollution.The overall yield of the produc is 40.5%.
文摘目的探讨绝经后女性2型糖尿病伴骨质疏松患者骨密度与N-端骨钙素(N-MID)、总Ⅰ型胺原氨基端延长肽(T-P1NP)、G-胶原特殊序列(β-CTX)、胰岛素样生长因子-1(IGF-1)的相关性研究。方法选取2017年3月—2019年8月该院收治的绝经后女性2型糖尿病伴骨质疏松患者321例,根据骨密度水平将其分为3组,分别是:骨量正常组107例、骨量减少组107例及骨质疏松组107例。比较3组一般资料,3组IGF-1、25-羟维生素D[25(OH)D]、β-CTX、T-P1NP、N-MID水平及3组骨代谢标志物、骨密度、24 h UPro及BMI的相关性。结果 3组糖化血红蛋白(HbA1c)、空腹血糖(FPG)、体质指数(BMI)、糖尿病病程、绝经年限及年龄间比较,差异均无统计学意义(t=1.063,P>0.05;t=1.425,P>0.05;t=1.987,P>0.05;t=1.006,P>0.05;t=1.366,P>0.05;t=1.682,P>0.05)。各部位的骨密度中骨质疏松组低于骨量正常组和骨量减少组(P<0.05),骨量正常组的骨密度高于对照组(P<0.05);25(OH)D属于正常值。骨量减少组、骨质疏松组的IGF-1、T-P1NP及N-MID均低于骨量正常组[(131.04±13.24)μg/L、(12.24±2.76)μg/L及(5.05±2.37)μg/L、骨量疏松组分别为(110.24±12.35)μg/L、(9.17±2.87)μg/L及(4.93±2.13)μg/L均低于骨量正常组(162.12±16.11)μg/L、(19.84±2.82)μg/L及(7.11±2.04)μg/L,差异有统计学意义(P<0.05)],骨质疏松组与骨量减少组β-CTX分别为(1.96±0.57)μg/L、(2.13±0.72)μg/L,均高于骨量正常组(1.33±0.37)μg/L,差异有统计学意义(P<0.05)。BMI、N-MID、25(OH)D;、IGF-1及T-P1NP和骨密度呈现正相关(t=2.264,P=0.113;t=2.416,P=0.002;t=2.268,P=0.013;t=2.176,P=0.012;t=3.012,P=0.002),与24 h UPro、β-CTX呈现负相关(t=-2.143,P=0.016;t=-2.382,P=0.014)。结论绝经后女性2型糖尿病伴骨质疏松患者骨密度和N-MID、T-P1NP、β-CTX及IGF-1具有一定的相关性,对患者实施相关的研究后,可以及时实施抗骨质疏松治疗或者预测骨折风险,临床上应当进一步推广应用。