期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
青少年体育锻炼对学业成绩影响的Meta分析
1
作者 尹佳奎 魏融家 黄睿 《湖北体育科技》 2023年第6期531-537,564,共8页
目的探究青少年体育锻炼对学业成绩的影响,提高学业成绩的体育课特征,以及干预特征、干预频率、干预周期等调节变量的调节作用。方法采用Meta分析法,检索国内外6个数据库共获得1320篇文献,最终纳入15篇。结果1)青少年体育锻炼对数学成... 目的探究青少年体育锻炼对学业成绩的影响,提高学业成绩的体育课特征,以及干预特征、干预频率、干预周期等调节变量的调节作用。方法采用Meta分析法,检索国内外6个数据库共获得1320篇文献,最终纳入15篇。结果1)青少年体育锻炼对数学成绩有积极影响(SMD=0.14,95%CI[0.04,0.23],p=0.0045),没有发现对语言(SMD=0.01,95%CI[-0.14,0.16],p=0.89)、阅读(SMD=0.09,95%CI[-0.01,0.19],p=0.08)和综合成绩(SMD=0.27,95%CI[-0.09,0.62],p=0.14)有积极影响;2)体育锻炼与学业成绩之间的相关受干预特征、干预措施、干预频率和干预周期的调节,不受研究类型的影响。结论青少年体育锻炼对学业成绩有积极影响,且无负面影响,相关性受干预频率、干预措施、干预周期等调节变量的影响,并且需要更多高质量的研究。 展开更多
关键词 体育锻炼 青少年 体教融合
下载PDF
Thermal and photoinduced valence tautomerism of a chain compound
2
作者 CHEN LiQin wei rongjia +2 位作者 TAO Jun HUANG RongBin ZHENG LanSun 《Science China Chemistry》 SCIE EI CAS 2012年第6期1037-1041,共5页
Herein reported is an example of one-dimensional coordination polymer [CoII(3,5-DBsq)2(dpg)]·(3,5-H2DBcat)2 (1) (3,5-DBsq = 3,5-di-tert-butylsemiquinonate, 3,5-H2DBcat = 3,5-di-tert-butyl-benzene-1,2-diol, dpg = ... Herein reported is an example of one-dimensional coordination polymer [CoII(3,5-DBsq)2(dpg)]·(3,5-H2DBcat)2 (1) (3,5-DBsq = 3,5-di-tert-butylsemiquinonate, 3,5-H2DBcat = 3,5-di-tert-butyl-benzene-1,2-diol, dpg = meso-alpha,beta-di(4-pyridyl)glycol) capable of undergoing thermal and photoinduced valence tautomeric transitions. 展开更多
关键词 互变异构 光致 化合物 配位聚合物 叔丁基苯 DPG 乙二醇
原文传递
An Eosin Y Encapsulated Cu(Ⅰ)Covalent Metal Organic Framework for Efficient Photocatalytic Sonogashira Cross-coupling Reaction
3
作者 YOU Peiye wei rongjia +1 位作者 NING Guohong LI Dan 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2022年第2期415-420,共6页
Sonogashira cross-coupling reaction is significant for the formation of C―C bonds and the creation of new substance in organic synthesis,which is usually catalyzed using noble metal,such as palladium or non-precious ... Sonogashira cross-coupling reaction is significant for the formation of C―C bonds and the creation of new substance in organic synthesis,which is usually catalyzed using noble metal,such as palladium or non-precious metal,such as copper under harsh reaction conditions.Herein,we report the encapsulation of an organic dye(i.e.,Eosin Y,EY)into a Cu(I)cyclic trinuclear unit(CTU)based covalent-metal organic framework(CMOF),namely EY@JNM-1,which demonstrates outstanding photocatalytic performance for the Sonogashira cross-coupling reaction of iodobenzene with alkynes.The EY@JNM-1 not only exhibited high catalytic activity for the alkynes(>99%conversion)and excellent selectivity for the cross-coupling product(>99%)under mild conditions,but also displayed excellent stability and recyclability. 展开更多
关键词 Covalent-metal organic framework Eosin Y Photocata-lysis Sonogashira cross-coupling reaction
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部