The recently published work by Liu et al.[1]introduced the Stepwise Ecological Restoration(STERE)framework,offering an innovative,systematic and modular methodology for ecological restoration.As ecosystem degradation ...The recently published work by Liu et al.[1]introduced the Stepwise Ecological Restoration(STERE)framework,offering an innovative,systematic and modular methodology for ecological restoration.As ecosystem degradation continues to pose a significant global threat to biodiversity,ecosystem services,and human well-being,traditional restoration methods often fail to account for the complexities and levels of degradation encountered in different ecosystems.展开更多
The stereoselective construction of vicinal all-carbon quaternary stereocenters has long been a formidable synthetic challenge.Direct asymmetric coupling of a tertiary carbon nucleophile with a tertiary carbon electro...The stereoselective construction of vicinal all-carbon quaternary stereocenters has long been a formidable synthetic challenge.Direct asymmetric coupling of a tertiary carbon nucleophile with a tertiary carbon electrophile is themost straightforward approach,but it is sterically and energetically disfavored.Herein,we describe a catalytic asymmetric substitution,where racemic tertiary bromides coupled directly with racemic secondary or tertiary carbanion.展开更多
Before Julesz made the random-dot stereograms (RDS) in 1959, many experiments had been made on binocular stereopsis and the results showed that disparity of
文摘The recently published work by Liu et al.[1]introduced the Stepwise Ecological Restoration(STERE)framework,offering an innovative,systematic and modular methodology for ecological restoration.As ecosystem degradation continues to pose a significant global threat to biodiversity,ecosystem services,and human well-being,traditional restoration methods often fail to account for the complexities and levels of degradation encountered in different ecosystems.
基金support from Nanyang Technological University for Tier 1 grants(RG1/19 and RG2/20)and Ministry of Education(Singapore)Tier 2 grants(no.MOE2019-T2-1-091)the University of Wollongong(VC Fellowship)and the Australian Research Council(DECRA DE210100053).
文摘The stereoselective construction of vicinal all-carbon quaternary stereocenters has long been a formidable synthetic challenge.Direct asymmetric coupling of a tertiary carbon nucleophile with a tertiary carbon electrophile is themost straightforward approach,but it is sterically and energetically disfavored.Herein,we describe a catalytic asymmetric substitution,where racemic tertiary bromides coupled directly with racemic secondary or tertiary carbanion.
文摘Before Julesz made the random-dot stereograms (RDS) in 1959, many experiments had been made on binocular stereopsis and the results showed that disparity of
