This study presents a solvent-free,facile synthesis of a bio-based green antibacterial agent and aromatic monomer methacrylated vanillin(MV)using vanillin.The resulting MV not only imparted antibacterial properties to...This study presents a solvent-free,facile synthesis of a bio-based green antibacterial agent and aromatic monomer methacrylated vanillin(MV)using vanillin.The resulting MV not only imparted antibacterial properties to coatings layered on leather,but could also be employed as a green alternative to petroleum-based carcinogen styrene(St).Herein,MV was copolymerized with butyl acrylate(BA)to obtain waterborne bio-based P(MV-BA)miniemulsion via miniemulsion polymerization.Subsequently,MXene nanosheets with excellent photothermal conversion performance and antibacterial properties,were introduced into the P(MV-BA)miniemulsion by ultrasonic dispersion.During the gradual solidification of P(MV-BA)/MXene nanocomposite miniemulsion on the leather surface,MXene gradually migrated to the surface of leather coatings due to the cavitation effect of ultrasonication and amphiphilicity of MXene,which prompted its full exposure to light and bacteria,exerting the maximum photothermal conversion efficiency and significant antibacterial efficacy.In particular,when the dosage of MXene nanosheets was 1.4 wt%,the surface temperature of P(MV-BA)/MXene nanocomposite miniemulsioncoated leather(PML)increased by about 15℃ in an outdoor environment during winter,and the antibacterial rate against Escherichia coli and Staphylococcus aureus was nearly 100%under the simulated sunlight treatment for 30 min.Moreover,the introduction of MXene nanosheets increased the air permeability,water vapor permeability,and thermal stability of these coatings.This study provides a new insight into the preparation of novel,green,and waterborne bio-based nanocomposite coatings for leather,with desired warmth retention and antibacterial properties.It can not only realize zerocarbon heating based on sunlight in winter,reducing the use of fossil fuels and greenhouse gas emissions,but also improve ability to fight off invasion by harmful bacteria,viruses,and other microorganisms.展开更多
EDITOR’S NOTE: They returned With an upset mind. Once they set foot on the soil where they were born and brought up, they found themselves enveloped in familylike warmth. All these help ease their suspective mind.
Guided by the All-China Women’s Federation(ACWF),the China Children and Teenagers’Fund(CCTF)and Hengyuanxiang Group launched Heng’ai Action in 2005.This public-welfare initiative called on caring people to knit swe...Guided by the All-China Women’s Federation(ACWF),the China Children and Teenagers’Fund(CCTF)and Hengyuanxiang Group launched Heng’ai Action in 2005.This public-welfare initiative called on caring people to knit sweaters for orphans and/or children with disabilities.During the past two decades,more than 465,000 kilograms of wool and 147 million yuan(US$21 million)in funding and materials have been donated to the program.Further,1.5 million sweaters have been knitted and presented to children in need,warming their bodies and hearts.展开更多
This research investigates the influence of loneliness on consumers’preference for high-calorie foods,addressingthe dual epidemics of loneliness and obesity.It explores how the need for warmth mediates this relations...This research investigates the influence of loneliness on consumers’preference for high-calorie foods,addressingthe dual epidemics of loneliness and obesity.It explores how the need for warmth mediates this relationship and proposesan effective intervention to alter consumers’beliefs about the role of food.Employing one survey and three experiments,the study examines the connection between loneliness and preference for high-calorie foods,with the methodologyincluding linear regression analysis,analysis of variance(ANOVA),and mediation analysis.These findings demonstratethat loneliness significantly increases consumers’preference for high-calorie foods,with the need for warmth serving as akey mediating factor.The results further suggest that changing consumers’beliefs about food can serve as an effective andlow-cost intervention to mitigate this preference.This research advances the theoretical understanding of the impact ofloneliness on consumer behavior and offers a practical behavioral intervention strategy of significant value for governments,non-governmental organizations(NGOs),and companies,aiming to combat obesity and improve public health.展开更多
Extremely cold environment has led to a variety of serious public health issues and posed huge burden on the social econ-omy,which is an urgent challenge to the human worldwide.Featured with comfort,convenience,and co...Extremely cold environment has led to a variety of serious public health issues and posed huge burden on the social econ-omy,which is an urgent challenge to the human worldwide.Featured with comfort,convenience,and cost-effectiveness,fibrous materials have been selected as heat insulation materials to protect the human body against the cold for centuries.The advanced ultrafine fibers,with remarkable softness,small average diameter and pore size,and high porosity,have found extensive attention,as promising candidate for application in reducing the heat loss.In this review,the heat transfer mechanisms for single fiber and fiber assembly are provided,and the typical categories of ultrafine fibrous materials for warmth retention,classified as fibrous membrane and fibrous sponge in terms of aggregate structures,are systematically summarized.In particular,this review comprehensively discusses the fabrication strategies,structure characteristics,and significant properties of various ultrafine fibrous materials.Finally,the current challenges and future development prospects of ultrafine fibrous materials for effective warmth retention are highlighted.展开更多
The literature suggests that expressed gratitude improves the interpersonal relationship between a beneficiary and a benefactor.However,there is little research that has explored why thanking provides these positive e...The literature suggests that expressed gratitude improves the interpersonal relationship between a beneficiary and a benefactor.However,there is little research that has explored why thanking provides these positive effects,so this study investigated thanking mechanisms to explain reasons why people feel close to a beneficiary who expresses gratitude.This study also examines the effects of apologies,which are sometimes used to show gratitude in Japan.In this experimental study,671 Japanese participants reported their perceived closeness,warmth,conscientiousness,and agreeableness to a hypothetical beneficiary who expressed gratitude,apologies,or both after a benefit was provided.The results revealed that benefactors who received a message indicating gratitude and both gratitude and apologies reported higher levels of closeness toward a beneficiary than those who received a message with only apologies and a message without either gratitude or apologies.A structural equation model further indicated that warmth and conscientiousness mediated the link between expressed gratitude/apologies and perceived closeness.展开更多
基金supported by the National Natural Science Foundation of China and(52073164 and 21838007).
文摘This study presents a solvent-free,facile synthesis of a bio-based green antibacterial agent and aromatic monomer methacrylated vanillin(MV)using vanillin.The resulting MV not only imparted antibacterial properties to coatings layered on leather,but could also be employed as a green alternative to petroleum-based carcinogen styrene(St).Herein,MV was copolymerized with butyl acrylate(BA)to obtain waterborne bio-based P(MV-BA)miniemulsion via miniemulsion polymerization.Subsequently,MXene nanosheets with excellent photothermal conversion performance and antibacterial properties,were introduced into the P(MV-BA)miniemulsion by ultrasonic dispersion.During the gradual solidification of P(MV-BA)/MXene nanocomposite miniemulsion on the leather surface,MXene gradually migrated to the surface of leather coatings due to the cavitation effect of ultrasonication and amphiphilicity of MXene,which prompted its full exposure to light and bacteria,exerting the maximum photothermal conversion efficiency and significant antibacterial efficacy.In particular,when the dosage of MXene nanosheets was 1.4 wt%,the surface temperature of P(MV-BA)/MXene nanocomposite miniemulsioncoated leather(PML)increased by about 15℃ in an outdoor environment during winter,and the antibacterial rate against Escherichia coli and Staphylococcus aureus was nearly 100%under the simulated sunlight treatment for 30 min.Moreover,the introduction of MXene nanosheets increased the air permeability,water vapor permeability,and thermal stability of these coatings.This study provides a new insight into the preparation of novel,green,and waterborne bio-based nanocomposite coatings for leather,with desired warmth retention and antibacterial properties.It can not only realize zerocarbon heating based on sunlight in winter,reducing the use of fossil fuels and greenhouse gas emissions,but also improve ability to fight off invasion by harmful bacteria,viruses,and other microorganisms.
文摘EDITOR’S NOTE: They returned With an upset mind. Once they set foot on the soil where they were born and brought up, they found themselves enveloped in familylike warmth. All these help ease their suspective mind.
文摘Guided by the All-China Women’s Federation(ACWF),the China Children and Teenagers’Fund(CCTF)and Hengyuanxiang Group launched Heng’ai Action in 2005.This public-welfare initiative called on caring people to knit sweaters for orphans and/or children with disabilities.During the past two decades,more than 465,000 kilograms of wool and 147 million yuan(US$21 million)in funding and materials have been donated to the program.Further,1.5 million sweaters have been knitted and presented to children in need,warming their bodies and hearts.
基金supported by the National Natural Science Foundation of China(72072169).
文摘This research investigates the influence of loneliness on consumers’preference for high-calorie foods,addressingthe dual epidemics of loneliness and obesity.It explores how the need for warmth mediates this relationship and proposesan effective intervention to alter consumers’beliefs about the role of food.Employing one survey and three experiments,the study examines the connection between loneliness and preference for high-calorie foods,with the methodologyincluding linear regression analysis,analysis of variance(ANOVA),and mediation analysis.These findings demonstratethat loneliness significantly increases consumers’preference for high-calorie foods,with the need for warmth serving as akey mediating factor.The results further suggest that changing consumers’beliefs about food can serve as an effective andlow-cost intervention to mitigate this preference.This research advances the theoretical understanding of the impact ofloneliness on consumer behavior and offers a practical behavioral intervention strategy of significant value for governments,non-governmental organizations(NGOs),and companies,aiming to combat obesity and improve public health.
基金supported by the National Natural Science Foundation of China(Nos.51873031,52103050,and 52103023)the Science and Technology Commission of Shanghai Municipality(No.21ZR1401800)the Shanghai Sailing Program(No.21YF1400700).
文摘Extremely cold environment has led to a variety of serious public health issues and posed huge burden on the social econ-omy,which is an urgent challenge to the human worldwide.Featured with comfort,convenience,and cost-effectiveness,fibrous materials have been selected as heat insulation materials to protect the human body against the cold for centuries.The advanced ultrafine fibers,with remarkable softness,small average diameter and pore size,and high porosity,have found extensive attention,as promising candidate for application in reducing the heat loss.In this review,the heat transfer mechanisms for single fiber and fiber assembly are provided,and the typical categories of ultrafine fibrous materials for warmth retention,classified as fibrous membrane and fibrous sponge in terms of aggregate structures,are systematically summarized.In particular,this review comprehensively discusses the fabrication strategies,structure characteristics,and significant properties of various ultrafine fibrous materials.Finally,the current challenges and future development prospects of ultrafine fibrous materials for effective warmth retention are highlighted.
文摘The literature suggests that expressed gratitude improves the interpersonal relationship between a beneficiary and a benefactor.However,there is little research that has explored why thanking provides these positive effects,so this study investigated thanking mechanisms to explain reasons why people feel close to a beneficiary who expresses gratitude.This study also examines the effects of apologies,which are sometimes used to show gratitude in Japan.In this experimental study,671 Japanese participants reported their perceived closeness,warmth,conscientiousness,and agreeableness to a hypothetical beneficiary who expressed gratitude,apologies,or both after a benefit was provided.The results revealed that benefactors who received a message indicating gratitude and both gratitude and apologies reported higher levels of closeness toward a beneficiary than those who received a message with only apologies and a message without either gratitude or apologies.A structural equation model further indicated that warmth and conscientiousness mediated the link between expressed gratitude/apologies and perceived closeness.
