维生素D对人体健康产生广泛作用，维生素D缺乏症（ Vitamin D deficiency ）可能会导致骨质疏松症进展、跌倒和骨折；同时，在西方国家出现了不一致的维生素D标准和实践方案。鉴于此，中国老年学会骨质疏松委员会相关专业人员，制定了...维生素D对人体健康产生广泛作用，维生素D缺乏症（ Vitamin D deficiency ）可能会导致骨质疏松症进展、跌倒和骨折；同时，在西方国家出现了不一致的维生素D标准和实践方案。鉴于此，中国老年学会骨质疏松委员会相关专业人员，制定了《维生素D与成年人骨骼健康应用指南》。该《指南》分为《简化版》和《标准版》，主要证据来源于2013年英国骨质疏松学会指南、2011年美国健康研究院报告，以及国内文献。该指南适用于成年人骨骼疾病，或有骨病风险患者的维生素D缺乏症管理。需说明，该指南不针对儿童期、妊娠期、以及患有严重或终末期慢性肾脏病（4～5期）的人群。指南内容包括中国成年人群维生素D阈值设定、维生素D状况评价、25OHD测量值解释、维生素D缺乏症的详细治疗计划和预防战略等。展开更多
Waste cellulosic biomass obtains various applications due to low-cost and eco-benign characteristics.A general strategy is proposed for waste cellulosic biomass to be modified with dialdehyde functional groups as inte...Waste cellulosic biomass obtains various applications due to low-cost and eco-benign characteristics.A general strategy is proposed for waste cellulosic biomass to be modified with dialdehyde functional groups as intermediates through periodate partial oxidation.Finally,aminothiourea-modified waste cellulosic biomass can be prepared through Schiff reaction.Waste corn stalk,cotton and paper as typical precursors,were used to prepare cellulosic biomass,abbreviated as AT-S,AT-C and AT-P,respectively,and their adsorption behaviors of Au(III)from the hydrochloric acid medium were investigated.The pseudo-second kinetics equation as well as the Langmuir isotherm equation can be used to depict the adsorption process,and the maximum adsorption capacities of Au(III)are21.4,19.0and3.28mol/kg for AT-S,AT-C and AT-P at298K,respectively.The adsorption capacities of Au(III)on aminothiourea modified corn stalk(AT-S)is almost357times greater than that of raw corn stalk.To the best of our knowledge,AT-S has the highest adsorption capacity towards Au(III).AT-S also displays a superior separation selectivity towards Au(III)in the presence of Cu(II),Ni(II),Co(II),Pt(VI),Pd(II)and Rh(III).Furthermore,the characterization analysis of XRD,TG,SEM,TEM and FTIR confirms that AuCl4– has been reduced to elemental Au nanoparticles and deposit onto the surface of the biomass.It shows a prospect for waste corn stalk to be used to adsorb Au(III)from liquid phase and the possible fabrication of gold nanoparticles by a general adsorption process without any reductant.展开更多
文摘维生素D对人体健康产生广泛作用，维生素D缺乏症（ Vitamin D deficiency ）可能会导致骨质疏松症进展、跌倒和骨折；同时，在西方国家出现了不一致的维生素D标准和实践方案。鉴于此，中国老年学会骨质疏松委员会相关专业人员，制定了《维生素D与成年人骨骼健康应用指南》。该《指南》分为《简化版》和《标准版》，主要证据来源于2013年英国骨质疏松学会指南、2011年美国健康研究院报告，以及国内文献。该指南适用于成年人骨骼疾病，或有骨病风险患者的维生素D缺乏症管理。需说明，该指南不针对儿童期、妊娠期、以及患有严重或终末期慢性肾脏病（4～5期）的人群。指南内容包括中国成年人群维生素D阈值设定、维生素D状况评价、25OHD测量值解释、维生素D缺乏症的详细治疗计划和预防战略等。
基金Projects(51504073,51404081,51672275)supported by the National Natural Science Foundation of ChinaProject(2012CBA01202)supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology,China+1 种基金Project(QianJiaoKeHe KY[2015]433)supported by the Research Program of the Education Department of Guizhou Province,ChinaProject(XJG20141104)supported by the Research Program of Talented Scholars of Guizhou Institute of Technology,China
文摘Waste cellulosic biomass obtains various applications due to low-cost and eco-benign characteristics.A general strategy is proposed for waste cellulosic biomass to be modified with dialdehyde functional groups as intermediates through periodate partial oxidation.Finally,aminothiourea-modified waste cellulosic biomass can be prepared through Schiff reaction.Waste corn stalk,cotton and paper as typical precursors,were used to prepare cellulosic biomass,abbreviated as AT-S,AT-C and AT-P,respectively,and their adsorption behaviors of Au(III)from the hydrochloric acid medium were investigated.The pseudo-second kinetics equation as well as the Langmuir isotherm equation can be used to depict the adsorption process,and the maximum adsorption capacities of Au(III)are21.4,19.0and3.28mol/kg for AT-S,AT-C and AT-P at298K,respectively.The adsorption capacities of Au(III)on aminothiourea modified corn stalk(AT-S)is almost357times greater than that of raw corn stalk.To the best of our knowledge,AT-S has the highest adsorption capacity towards Au(III).AT-S also displays a superior separation selectivity towards Au(III)in the presence of Cu(II),Ni(II),Co(II),Pt(VI),Pd(II)and Rh(III).Furthermore,the characterization analysis of XRD,TG,SEM,TEM and FTIR confirms that AuCl4– has been reduced to elemental Au nanoparticles and deposit onto the surface of the biomass.It shows a prospect for waste corn stalk to be used to adsorb Au(III)from liquid phase and the possible fabrication of gold nanoparticles by a general adsorption process without any reductant.
