Six new transition metal complexes, [Zn(HBTC)(PYTPY)]n·n PYTPY(1), [Cu(HBTC)(PYTPY)]n·n PYTPY(2), [Co(HBTC)(PYTPY)]n·n DMF(3), [Mn(HBTC)(PYTPY)]n·n DMF(4), [Cd(HBTC)(PYTP...Six new transition metal complexes, [Zn(HBTC)(PYTPY)]n·n PYTPY(1), [Cu(HBTC)(PYTPY)]n·n PYTPY(2), [Co(HBTC)(PYTPY)]n·n DMF(3), [Mn(HBTC)(PYTPY)]n·n DMF(4), [Cd(HBTC)(PYTPY)(H2O)]n·2nH2O(5), and [Co(HBTC)(PYTPY)(H2O)2](6),(H3BTC = 1,3,5-benzenetricarboxylic acid, PYTPY = 4'-(4-pyridyl)-2,2':6',2''-terpyridine, DMF = N,N?-dimethylformamide), have been synthesized and characterized by elemental analysis, IR and X-ray single-crystal diffraction. Complexes 1~5 all feature one-dimensional chain structures, and complex 6 exhibits a zero-dimensional structure. Complexes 1~5 present three-dimensional(3D) supramolecular frameworks via π-π stacking interactions, whenas 6 has also a 3D supramolecular structure assembled by hydrogen bonding. Meanwhile, complexes 1 ~ 6 exhibit the thermal stabilities and photoluminescent properties.展开更多
目的探究中国中老年人BMI与工具性日常生活活动能力(instrumental activities of daily living,IADL)之间的关系。方法本研究基于中国健康与养老追踪调查(China health and retirement longitudinal study,CHARLS)2011―2015年的随访数...目的探究中国中老年人BMI与工具性日常生活活动能力(instrumental activities of daily living,IADL)之间的关系。方法本研究基于中国健康与养老追踪调查(China health and retirement longitudinal study,CHARLS)2011―2015年的随访数据,剔除基线存在IADL失能者,最终纳入研究对象8955名。采用二分类Logistic线性回归分析模型分析BMI与IADL失能发生风险的关联。结果经过4年的随访,2186名(24.41%)研究对象发生IADL失能,其中男性和女性发生率分别为18.79%和29.89%。低体重、正常体重、超重及肥胖组的IADL失能发生率分别为42.64%、25.13%、19.85%和23.49%。与正常体重组相比,低体重、超重及肥胖组IADL失能发生风险的OR值分别为1.381(95%CI:1.117~1.707,P=0.003)、0.830(95%CI:0.727~0.948,P=0.006)和0.985(95%CI:0.819~1.185,P=0.874)。结论与正常体重组相比,中老年人群中低体重与IADL失能的发生呈正向关联,而超重则与IADL失能呈负相关关系,肥胖与IADL失能之间不存在统计学意义。展开更多
基金Supported by the National Natural Science Foundation of China(No.21576112)Natural Science Foundation of Jilin Province(20150623024TC-19,20170520147JH)the Science and Technology Development Plan of Siping City(2015049)
文摘Six new transition metal complexes, [Zn(HBTC)(PYTPY)]n·n PYTPY(1), [Cu(HBTC)(PYTPY)]n·n PYTPY(2), [Co(HBTC)(PYTPY)]n·n DMF(3), [Mn(HBTC)(PYTPY)]n·n DMF(4), [Cd(HBTC)(PYTPY)(H2O)]n·2nH2O(5), and [Co(HBTC)(PYTPY)(H2O)2](6),(H3BTC = 1,3,5-benzenetricarboxylic acid, PYTPY = 4'-(4-pyridyl)-2,2':6',2''-terpyridine, DMF = N,N?-dimethylformamide), have been synthesized and characterized by elemental analysis, IR and X-ray single-crystal diffraction. Complexes 1~5 all feature one-dimensional chain structures, and complex 6 exhibits a zero-dimensional structure. Complexes 1~5 present three-dimensional(3D) supramolecular frameworks via π-π stacking interactions, whenas 6 has also a 3D supramolecular structure assembled by hydrogen bonding. Meanwhile, complexes 1 ~ 6 exhibit the thermal stabilities and photoluminescent properties.
文摘目的探究中国中老年人BMI与工具性日常生活活动能力(instrumental activities of daily living,IADL)之间的关系。方法本研究基于中国健康与养老追踪调查(China health and retirement longitudinal study,CHARLS)2011―2015年的随访数据,剔除基线存在IADL失能者,最终纳入研究对象8955名。采用二分类Logistic线性回归分析模型分析BMI与IADL失能发生风险的关联。结果经过4年的随访,2186名(24.41%)研究对象发生IADL失能,其中男性和女性发生率分别为18.79%和29.89%。低体重、正常体重、超重及肥胖组的IADL失能发生率分别为42.64%、25.13%、19.85%和23.49%。与正常体重组相比,低体重、超重及肥胖组IADL失能发生风险的OR值分别为1.381(95%CI:1.117~1.707,P=0.003)、0.830(95%CI:0.727~0.948,P=0.006)和0.985(95%CI:0.819~1.185,P=0.874)。结论与正常体重组相比,中老年人群中低体重与IADL失能的发生呈正向关联,而超重则与IADL失能呈负相关关系,肥胖与IADL失能之间不存在统计学意义。
基金Supported by the National Natural Science Foundation(21576112,21546006)Natural Science Foundation Project of Jilin Province(20150623024TC-19)+1 种基金the Project of Education Department of Jilin Province(2016-221)the Science and Technology Development Plan of Siping City(2015049)