The use of epoxy resin(EP)to prepare epoxy recycled asphalt mixture can achieve the reuse of 100%reclaimed asphalt pavement(RAP).However,the high stiffness and brittleness of epoxy resin result in insufficient crack r...The use of epoxy resin(EP)to prepare epoxy recycled asphalt mixture can achieve the reuse of 100%reclaimed asphalt pavement(RAP).However,the high stiffness and brittleness of epoxy resin result in insufficient crack resistance of mixture.To address the issue,dry-method styrene-butadiene-styrene(DSBS)and epoxy resin were mixed with aged asphalt to prepare SBS-modified epoxy reclaimed asphalt(SERA).The micro fusion characteristics and mechanical properties of SERA were evaluated,and the optimal DSBS dosage was determined based on various tests.The results show that adding DSBS can enable the tensile toughness and low-temperature performance of SERA with less EP content to reach or exceed the performance level of epoxy reclaimed asphalt(ERA)with higher EP content.At 30%EP content,the recommended dry-method SBS content is 9%;At 40%EP content,the recommended dry-method SBS content is 5%;When the EP content is 50%,the recommended dry-method SBS content is 7%.展开更多
腐竹是优质的素食豆制品,具有较高的营养价值。文章研究了热风干燥(hot air drying,HAD)和热风-真空干燥(hot air combined with vacuum drying,HA-VD)方式对腐竹品质的影响。结果表明,与HAD腐竹相比,HA-VD可以有效缩短腐竹的干燥时间,H...腐竹是优质的素食豆制品,具有较高的营养价值。文章研究了热风干燥(hot air drying,HAD)和热风-真空干燥(hot air combined with vacuum drying,HA-VD)方式对腐竹品质的影响。结果表明,与HAD腐竹相比,HA-VD可以有效缩短腐竹的干燥时间,HA-VD组的色泽和感官评分得到了显著的提升,质构特性和表面微观结构呈现显著性差异,蒸煮损失率和持水性呈现负相关关系,HA-VD腐竹的复水速率显著高于HAD腐竹。该研究可为腐竹行业提供腐竹干燥技术参考。展开更多
Chalcogenide thin films incorporating rare-earth (RE) elements with applicationsin optics, electronics, and magnetics have received considerable attention.Aiming at growing pure chalcogenides, dry-method syntheses hav...Chalcogenide thin films incorporating rare-earth (RE) elements with applicationsin optics, electronics, and magnetics have received considerable attention.Aiming at growing pure chalcogenides, dry-method syntheses have beendeveloped. In this review, we summarize the progress thus far on lowdimensionalRE-based chalcogenides (RECs), covering fabrication methods,structures, and applications. This review also provides the summary and perspectivesof the challenges of fabrication and opportunities on the applicationof RECs in the future.展开更多
基金Funded by the National Natural Science Foundation of China(Nos.52378444,52078130)the Natural Science Foundation of Shandong Province(No.ZR2021QE250)。
文摘The use of epoxy resin(EP)to prepare epoxy recycled asphalt mixture can achieve the reuse of 100%reclaimed asphalt pavement(RAP).However,the high stiffness and brittleness of epoxy resin result in insufficient crack resistance of mixture.To address the issue,dry-method styrene-butadiene-styrene(DSBS)and epoxy resin were mixed with aged asphalt to prepare SBS-modified epoxy reclaimed asphalt(SERA).The micro fusion characteristics and mechanical properties of SERA were evaluated,and the optimal DSBS dosage was determined based on various tests.The results show that adding DSBS can enable the tensile toughness and low-temperature performance of SERA with less EP content to reach or exceed the performance level of epoxy reclaimed asphalt(ERA)with higher EP content.At 30%EP content,the recommended dry-method SBS content is 9%;At 40%EP content,the recommended dry-method SBS content is 5%;When the EP content is 50%,the recommended dry-method SBS content is 7%.
文摘腐竹是优质的素食豆制品,具有较高的营养价值。文章研究了热风干燥(hot air drying,HAD)和热风-真空干燥(hot air combined with vacuum drying,HA-VD)方式对腐竹品质的影响。结果表明,与HAD腐竹相比,HA-VD可以有效缩短腐竹的干燥时间,HA-VD组的色泽和感官评分得到了显著的提升,质构特性和表面微观结构呈现显著性差异,蒸煮损失率和持水性呈现负相关关系,HA-VD腐竹的复水速率显著高于HAD腐竹。该研究可为腐竹行业提供腐竹干燥技术参考。
基金National Natural Science Foundation of China,Grant/Award Numbers:21522106,21971117Nankai University,Grant/Award Number:ZB19500202+4 种基金111 ProjectChina National Funds for Excellent Young ScientistsWe gratefully acknowledge the support from the China National Funds for Excellent Young Scientists(grant no.21522106)National Natural Science Foundation of China(grant no.21971117)111 Project(B18030)from China,and the Open Funds(RERU2019001)of the State Key Laboratory of Rare Earth Resource Utilization and the Functional Research Funds for the Central Universities,Nankai University(ZB19500202).
文摘Chalcogenide thin films incorporating rare-earth (RE) elements with applicationsin optics, electronics, and magnetics have received considerable attention.Aiming at growing pure chalcogenides, dry-method syntheses have beendeveloped. In this review, we summarize the progress thus far on lowdimensionalRE-based chalcogenides (RECs), covering fabrication methods,structures, and applications. This review also provides the summary and perspectivesof the challenges of fabrication and opportunities on the applicationof RECs in the future.
文摘针对秋海棠属杂交育种中花期不遇的关键问题,为明确香花秋海棠(Begonia handelii)和铁甲秋海棠(B. masoniana)花粉活力变化规律及最优贮藏方案,采用离体萌发法,系统探究开花天数(香花秋海棠1~13 d、铁甲秋海棠1~5 d)、干燥方式(25~26℃鼓风干燥箱中烘干3~4.5 h、自然干燥24 h)及贮藏条件(常温22~28℃、4℃、-20℃)对花粉活力的影响。结果表明,香花秋海棠、铁甲秋海棠开花3 d花粉活力最高,分别为87.83%、86.14%。采用烘干法干燥2种秋海棠花粉效果优于自然干燥法。常温贮藏1 d 2种秋海棠花粉活力均达81.49%以上,4℃贮藏90 d 2种秋海棠花粉活力均达62.59%以上,-20℃贮藏30~180 d 2种秋海棠花粉活力均达90.82%以上,贮藏360 d 2种秋海棠花粉活力依然维持在86.03%以上。因此,香花秋海棠和铁甲秋海棠的最优花粉采集期为开花3 d,推荐25~26℃烘干干燥后,采用-20℃低温冷冻贮藏。本研究结果为秋海棠属杂交育种中花粉利用提供技术支撑,后续可开展超低温贮藏技术研究,为种质资源长期保存奠定基础。
