Chemical resistant textiles are vital for safeguarding humans against chemical hazards in various settings.such as industrialproduction,chemicalaccidents,laboratory activities,and road transportation.However,the ideal...Chemical resistant textiles are vital for safeguarding humans against chemical hazards in various settings.such as industrialproduction,chemicalaccidents,laboratory activities,and road transportation.However,the ideal integration of chemical resistance,thermal and moisture management,and wearer condition monitoring in conventional chemically protective textiles remains challenging.Herein,the design,manufacturing,and use of stretchable hierarchical core-shell yarns(HCSYs)for integrated chemical resistance,moisture regulation,and smart sensing textiles are demonstrated.These yarns con-tain helically elastic spandex,wrapped silver-plated nylon,and surface-structuredpolytetrafluo-roethylene(PTFE)yarns and are designed and manufactured based on a scalable fabrication process.In addition to their ideal chemical resistance performance,HCSYs can function as multifunctional stretch-able electronics for real-time human motion monitoring and as the basic element of intelligent textiles.Furthermore,a desirable dynamic thermoregulation function is achieved by exploiting the fabric structure with stretching modulation.Our HCSYs may provide prospective opportunities for the future development of smart protective textiles with high durability,flexibility,and scalability.展开更多
Summary What is already known about this topic?Aerosol transmission is one route for the spread of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).However,uncertainty remains on the threshold of ventilatio...Summary What is already known about this topic?Aerosol transmission is one route for the spread of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).However,uncertainty remains on the threshold of ventilation rate in its occurrence.What is added by this report?Based on two cases in Shandong Province and Hubei Province,the effect of wearing masks and the minimum ventilation required to reduce coronavirus disease 2019(COVID-19)aerosol transmission was determined.展开更多
Infanticide,killing unweaned offspring in conspecifics,occurs widely among mammals,such as rodents,ungulates,and carnivores,especially in primates(Lukas and Huchard 2014).Such scenarios are often triggered by intruder...Infanticide,killing unweaned offspring in conspecifics,occurs widely among mammals,such as rodents,ungulates,and carnivores,especially in primates(Lukas and Huchard 2014).Such scenarios are often triggered by intruders that have replaced the former dominant males in nonhuman primates(Borries 1997).It has widely been viewed that infanticide is one of the solutions of sexually driven evolutionary selection:males kill infants to end lactational amenorrhea of the victim's mothers,forcing them to return to estrus and providing infanticidal males with the opportunities to sire their new offspring(Hrdy 1979).There is a broad spectrum regarding the patterns and mechanisms causing such events,referring to alternative breeding behaviors and mating systems-monogamy,polyandry,polygyny,and promiscuity(Qi et al.2020).展开更多
基金the National Key Research and Development Program of China(2022YFB3805800)the National Natural Science Foundation of China(52173059 and U21A2095)+2 种基金the Postgraduate Research and PracticeInnovation Program of Jiangsu Province(KYCX223203)the Major Basic Research Project of the Natural Science Foundation of the Jiangsu Higher Education Institutions(21KJA540002)the Key Research and Develop-ment Program of Hubei Province(2021BAA068).
文摘Chemical resistant textiles are vital for safeguarding humans against chemical hazards in various settings.such as industrialproduction,chemicalaccidents,laboratory activities,and road transportation.However,the ideal integration of chemical resistance,thermal and moisture management,and wearer condition monitoring in conventional chemically protective textiles remains challenging.Herein,the design,manufacturing,and use of stretchable hierarchical core-shell yarns(HCSYs)for integrated chemical resistance,moisture regulation,and smart sensing textiles are demonstrated.These yarns con-tain helically elastic spandex,wrapped silver-plated nylon,and surface-structuredpolytetrafluo-roethylene(PTFE)yarns and are designed and manufactured based on a scalable fabrication process.In addition to their ideal chemical resistance performance,HCSYs can function as multifunctional stretch-able electronics for real-time human motion monitoring and as the basic element of intelligent textiles.Furthermore,a desirable dynamic thermoregulation function is achieved by exploiting the fabric structure with stretching modulation.Our HCSYs may provide prospective opportunities for the future development of smart protective textiles with high durability,flexibility,and scalability.
基金Tsinghua University Spring Breeze Fund(20201080519)National Key R&D Program of China(2020YFC0861500).
文摘Summary What is already known about this topic?Aerosol transmission is one route for the spread of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).However,uncertainty remains on the threshold of ventilation rate in its occurrence.What is added by this report?Based on two cases in Shandong Province and Hubei Province,the effect of wearing masks and the minimum ventilation required to reduce coronavirus disease 2019(COVID-19)aerosol transmission was determined.
基金supported by the National Natural Science Foundation of China(32070457,32200396,31730104)Strategic Priority Research Program of the Chinese Academy of Sciences(XDB31020302)+2 种基金The Biodiversity Survey and Assessment Project(2019HJ2096001006)Key Cultivation Research Project of Shaanxi Academy of Sciences(2022K-05)The American Society of Primatologists wild“Saving Primates Where They Live”Partnership Award.
文摘Infanticide,killing unweaned offspring in conspecifics,occurs widely among mammals,such as rodents,ungulates,and carnivores,especially in primates(Lukas and Huchard 2014).Such scenarios are often triggered by intruders that have replaced the former dominant males in nonhuman primates(Borries 1997).It has widely been viewed that infanticide is one of the solutions of sexually driven evolutionary selection:males kill infants to end lactational amenorrhea of the victim's mothers,forcing them to return to estrus and providing infanticidal males with the opportunities to sire their new offspring(Hrdy 1979).There is a broad spectrum regarding the patterns and mechanisms causing such events,referring to alternative breeding behaviors and mating systems-monogamy,polyandry,polygyny,and promiscuity(Qi et al.2020).
