One of the core concepts of park city is from form construction to ecological transformation and sustainable development,and it is also a new construction path proposed to address urban issues in the new era.As an imp...One of the core concepts of park city is from form construction to ecological transformation and sustainable development,and it is also a new construction path proposed to address urban issues in the new era.As an important component of the ecosystem,urban wilderness is based on reconstructing the relationship between humans and nature,and has significant value in enhancing biodiversity,improving ecosystem services,and promoting human physical and mental health.This study proposes that urban wilderness can bring new ecological development models to the development of park city,play an important role in comprehensively improving the urban ecological environment,and further enrich the connotation of park city.Taking Yunshangbali·Exploration Park in Chengdu as an example,this study showcases the multiple values of wilderness through design practice and empowers the construction of park city.展开更多
文摘One of the core concepts of park city is from form construction to ecological transformation and sustainable development,and it is also a new construction path proposed to address urban issues in the new era.As an important component of the ecosystem,urban wilderness is based on reconstructing the relationship between humans and nature,and has significant value in enhancing biodiversity,improving ecosystem services,and promoting human physical and mental health.This study proposes that urban wilderness can bring new ecological development models to the development of park city,play an important role in comprehensively improving the urban ecological environment,and further enrich the connotation of park city.Taking Yunshangbali·Exploration Park in Chengdu as an example,this study showcases the multiple values of wilderness through design practice and empowers the construction of park city.
文摘该文采用水热法制备棒状硫化铋(Bi_(2)S_(3))颗粒,通过超声复合法将硫化铋与石墨烯(graphene,Gr)复合,得到Bi_(2)S_(3)-Gr复合材料。将复合材料滴涂到玻碳电极(glassy carbon electrode,GCE)上,构建可灵敏检测6-苄氨基嘌呤(6-benzylaminopurine,6-BA)的电化学传感器。在最优条件下对6-BA进行电化学分析,结果表明6-BA在Bi_(2)S_(3)-Gr/GCE上受扩散控制,有2个电子参与6-BA的氧化过程。采用差分脉冲伏安法(differential pulse voltammetry,DPV)对0.5~100μmol/L的6-BA进行检测,检出限(limit of detection,LOD)为2.7×10^(-7)mol/L。所制备的Bi_(2)S_(3)-Gr/GCE传感器具有良好的重复性与重现性,相对标准偏差(relative standard deviation,RSD)分别为3.52%和4.31%,常见的干扰物对6-BA的检测不会造成影响。利用加标回收法测定豆芽中的6-BA含量,回收率为92.75%~112.10%,表明该传感器在实际检测中对6-BA定量分析方面具有良好的应用前景。
