The interest in curtailing environmental pollution issues through physical separation processes has inspired an extensive search for novel nanoporous materials with exceptional adsorption capabilities.Covalent triazin...The interest in curtailing environmental pollution issues through physical separation processes has inspired an extensive search for novel nanoporous materials with exceptional adsorption capabilities.Covalent triazine frameworks(CTFs),emerged as a class of crystalline covalent organic frameworks(COFs),have been widely examined for various separation applications,owing to their large porosity,high stability,and rich nitrogen(N)doping.The development of CTFs for efficient adsorption of mercury(Ⅱ)(Hg^(2+))is of great importance for the field,whereas it is rarely attempted,on account of limited synthetic strategies and unknown structural-property relations of conventional CTFs derived from ionothermal approaches.Herein,we report rational synthesis of a crystalline CTF with methylthio pendant arms for efficient removal of Hg^(2+)with an exceptional capacity of 751 mg·g^(-1),ranking at the top among previously-reported adsorbents.This work may open up new possibility in the synthesis of COFs for various separations.展开更多
毛豆,又称菜用大豆(Glycine max L.),其味道鲜香营养价值高,是一种重要的豆科蔬菜。在减施化肥条件下,腐殖酸作为替代化肥的有机肥料的最佳选择之一。本试验探讨腐殖酸水溶肥对毛豆生长的影响,用早熟毛豆品种沪宁95-1毛豆作为试验材料,...毛豆,又称菜用大豆(Glycine max L.),其味道鲜香营养价值高,是一种重要的豆科蔬菜。在减施化肥条件下,腐殖酸作为替代化肥的有机肥料的最佳选择之一。本试验探讨腐殖酸水溶肥对毛豆生长的影响,用早熟毛豆品种沪宁95-1毛豆作为试验材料,设置3次重复,分析0 g/L(T0),1 g/L(T1),2 g/L(T2)腐殖酸水溶肥浓度下对毛豆的发芽率、株高、叶绿素等含量的影响。结果表明,T1处理的发芽率比对照增加了15.0%,T1和T2处理的株高分别比对照增加了12.8%和6.8%,其中,T1处理有显著性促进效果;T1处理单株荚数、单株荚重和百粒重均显著高于对照,分别比对照增加42.3%、48.6%和20.7%。叶绿素含量和对照相比分别增加了12.7%和6.7%;T1和T2处理均显著性地促进了可溶性糖含量,分别增加了35.3%和63.5%。结果显示,施加1 g/L浓度的腐殖酸水溶肥可以提高毛豆的发芽率、株高、叶绿素含量和可溶性糖含量。展开更多
目的观察石墨烯新型灸贴与活络止痛贴治疗肱骨外上髁炎的疗效差异,探讨石墨烯新型灸贴的有效性。方法按照随机数字表法将72例肱骨外上髁炎的患者平均分到试验组和对照组,试验组采用石墨烯新型灸贴,对照组采用活络止痛贴,2组均选取患侧...目的观察石墨烯新型灸贴与活络止痛贴治疗肱骨外上髁炎的疗效差异,探讨石墨烯新型灸贴的有效性。方法按照随机数字表法将72例肱骨外上髁炎的患者平均分到试验组和对照组,试验组采用石墨烯新型灸贴,对照组采用活络止痛贴,2组均选取患侧的阿是穴(最痛点)、曲池和手三里,每穴1贴,隔日贴敷1次,每次贴敷6 h,2组均治疗14 d。分别对比治疗前后的视觉模拟评分(Visual Analogue Scale,VAS)、上肢功能评定量表评分(Disability of Arm Shoulder and Hand,DASH)及无痛握力值(Pain-free Grip Strength,PFG)。结果2组患者的VAS评分和DASH评分均降低(P<0.05),PFG值较治疗前增高(P<0.01)。组间比较发现,试验组总有效率为93.90%;对照组总有效率为88.20%。结论石墨烯新型灸贴治疗肱骨外上髁炎的疗效优于活络止痛贴。展开更多
基金The National Natural Science Foundation of China(22078349,22005319,52170109)Self-deployment Program from Lanzhou Institute of Chemical Physics(E30159SQ).
文摘The interest in curtailing environmental pollution issues through physical separation processes has inspired an extensive search for novel nanoporous materials with exceptional adsorption capabilities.Covalent triazine frameworks(CTFs),emerged as a class of crystalline covalent organic frameworks(COFs),have been widely examined for various separation applications,owing to their large porosity,high stability,and rich nitrogen(N)doping.The development of CTFs for efficient adsorption of mercury(Ⅱ)(Hg^(2+))is of great importance for the field,whereas it is rarely attempted,on account of limited synthetic strategies and unknown structural-property relations of conventional CTFs derived from ionothermal approaches.Herein,we report rational synthesis of a crystalline CTF with methylthio pendant arms for efficient removal of Hg^(2+)with an exceptional capacity of 751 mg·g^(-1),ranking at the top among previously-reported adsorbents.This work may open up new possibility in the synthesis of COFs for various separations.
文摘目的观察石墨烯新型灸贴与活络止痛贴治疗肱骨外上髁炎的疗效差异,探讨石墨烯新型灸贴的有效性。方法按照随机数字表法将72例肱骨外上髁炎的患者平均分到试验组和对照组,试验组采用石墨烯新型灸贴,对照组采用活络止痛贴,2组均选取患侧的阿是穴(最痛点)、曲池和手三里,每穴1贴,隔日贴敷1次,每次贴敷6 h,2组均治疗14 d。分别对比治疗前后的视觉模拟评分(Visual Analogue Scale,VAS)、上肢功能评定量表评分(Disability of Arm Shoulder and Hand,DASH)及无痛握力值(Pain-free Grip Strength,PFG)。结果2组患者的VAS评分和DASH评分均降低(P<0.05),PFG值较治疗前增高(P<0.01)。组间比较发现,试验组总有效率为93.90%;对照组总有效率为88.20%。结论石墨烯新型灸贴治疗肱骨外上髁炎的疗效优于活络止痛贴。
