With the widespread promotion and application of the Internet and mobile devices,the WeChat platform has become more and more involved and used in the teaching process due to its fast,convenient and efficient features...With the widespread promotion and application of the Internet and mobile devices,the WeChat platform has become more and more involved and used in the teaching process due to its fast,convenient and efficient features.This paper mainly analyzes the advantages of feasibility and convenience of WeChat platform in teaching,and focuses on the application form of WeChat in college English teaching,and puts forward teaching strategies suitable for college English teaching in ethnic colleges and universities,so as to enrich English teaching resources and methods,make up for the shortcomings in traditional teaching and comprehensively improve teaching quality,promote the reform of college English teaching and explore an adaptive teaching mode suitable for college English in ethnic colleges and universities.展开更多
Individualized college English teaching is an important practice for colleges and universities to carry out college English teaching reform.Starting from the analysis of the connotation of individualized college Engli...Individualized college English teaching is an important practice for colleges and universities to carry out college English teaching reform.Starting from the analysis of the connotation of individualized college English teaching,this paper summarizes the significant characteristics of individualized college English teaching,and puts forward the idea of constructing an individualized college English teaching mode,in the hope that provides some reference for the comprehensive implementation of the current college English teaching reform.展开更多
We conceptualize bioresource upgrade for sustainable energy,environment,and biomedicine with a focus on circular economy,sustainability,and carbon neutrality using high availability and low utilization biomass(HALUB)....We conceptualize bioresource upgrade for sustainable energy,environment,and biomedicine with a focus on circular economy,sustainability,and carbon neutrality using high availability and low utilization biomass(HALUB).We acme energy-efficient technologies for sustainable energy and material recovery and applications.The technologies of thermochemical conversion(TC),biochemical conversion(BC),electrochemical conversion(EC),and photochemical conversion(PTC)are summarized for HALUB.Microalgal biomass could contribute to a biofuel HHV of 35.72 MJ Kg^(-1)and total benefit of 749$/ton biomass via TC.Specific surface area of biochar reached 3000 m^(2)g^(-1)via pyrolytic carbonization of waste bean dregs.Lignocellulosic biomass can be effectively converted into bio-stimulants and biofertilizers via BC with a high conversion efficiency of more than 90%.Besides,lignocellulosic biomass can contribute to a current density of 672 mA m^(-2)via EC.Bioresource can be 100%selectively synthesized via electrocatalysis through EC and PTC.Machine learning,techno-economic analysis,and life cycle analysis are essential to various upgrading approaches of HALUB.Sustainable biomaterials,sustainable living materials and technologies for biomedical and multifunctional applications like nano-catalysis,microfluidic and micro/nanomotors beyond are also highlighted.New techniques and systems for the complete conversion and utilization of HALUB for new energy and materials are further discussed.展开更多
The current transition to sustainability and the circular economy can be viewed as a socio-technical response to environmental impacts and the need to enhance the overall performance of the linear production and consu...The current transition to sustainability and the circular economy can be viewed as a socio-technical response to environmental impacts and the need to enhance the overall performance of the linear production and consumption paradigm.The concept of biowaste refineries as a feasible alternative to petroleum refineries has gained popularity.Biowaste has become an important raw material source for developing bioproducts and biofuels.Therefore,effective environmental biowaste management systems for the production of bioproducts and biofuels are crucial and can be employed as pillars of a circular economy.Bioplastics,typically plastics manufactured from bio-based polymers,stand to contribute to more sustainable commercial plastic life cycles as part of a circular economy in which virgin polymers are made from renewable or recycled raw materials.Various frameworks and strategies are utilized to model and illustrate additional patterns in fossil fuel and bioplastic feedstock prices for various governments'long-term policies.This review paper highlights the harmful impacts of fossil-based plastic on the environment and human health,as well as the mass need for eco-friendly alternatives such as biodegradable bioplastics.Utilizing new types of bioplastics derived from renewable resources(e.g.,biowastes,agricultural wastes,or microalgae)and choosing the appropriate end-of-life option(e.g.,anaerobic digestion)may be the right direction to ensure the sustainability of bioplastic production.Clear regulation and financial incentives are still required to scale from niche polymers to large-scale bioplastic market applications with a truly sustainable impact.展开更多
It is established that monitoring blood glucose on a daily basis is one of the most effective solutions to prevent and treat diabetes.Consequently,developing a glucose sensing platform with outstanding sensing perform...It is established that monitoring blood glucose on a daily basis is one of the most effective solutions to prevent and treat diabetes.Consequently,developing a glucose sensing platform with outstanding sensing performance occupies an indispensable position for the early diagnosis and risk assessment of diabetes.Recently,biosensor has been deemed as a promising apparatus to acquire the signals for glucose monitoring based on 2D materials.However,it is unsatisfied to deploy some materials widely as a result of some inherent defects.Carbon nanotubes have comparatively high toxicity.MoS_(2) with unfavourable biocompatibility are still arduously implemented on being functionalized.Fortunately,MXene,a brand-new and rapidly developing two-dimensional material,exhibits marvellous application potential in the domain of biosensing.Therefore,it has exerted tremendous attention from diverse scientific fields owning to its remarkable properties,such as excellent hydrophilicity,metal-like conductivity,abundant surface functional groups,unique layered structure,large specific surface area and remarkable biocompatibility.This review mainly focuses on the main synthetic route of MXenes,as well as the recent advancements of biosensors involving MXenes as an electrode modifier for glucose detection.In addition,the promising prospects and challenges of glucose sensing technology based on MXenes are also discussed.展开更多
In China, the responsibilitY of protecting the environment lies largely with local governments. Within the framework of spatial econometrics, we investigate empirically the consequence of such an institutional setting...In China, the responsibilitY of protecting the environment lies largely with local governments. Within the framework of spatial econometrics, we investigate empirically the consequence of such an institutional setting. Using city-level data for China, the present study finds that city governments behave strategically in making spending decisions regarding environmental protection. This paper finds that a city government appears to cut its own spending as a response to the rise in environmental protection spending by its neighbors. Hence, environmental protection tends to be underprovided. As a result, we suggest that centralizing the environmental protection responsibility to a higher level of government would be beneficial in terms of controlling pollution in China.展开更多
文摘With the widespread promotion and application of the Internet and mobile devices,the WeChat platform has become more and more involved and used in the teaching process due to its fast,convenient and efficient features.This paper mainly analyzes the advantages of feasibility and convenience of WeChat platform in teaching,and focuses on the application form of WeChat in college English teaching,and puts forward teaching strategies suitable for college English teaching in ethnic colleges and universities,so as to enrich English teaching resources and methods,make up for the shortcomings in traditional teaching and comprehensively improve teaching quality,promote the reform of college English teaching and explore an adaptive teaching mode suitable for college English in ethnic colleges and universities.
基金This article is one of the achievements of the school-level teaching reform research project of Yunnan Minzu university.
文摘Individualized college English teaching is an important practice for colleges and universities to carry out college English teaching reform.Starting from the analysis of the connotation of individualized college English teaching,this paper summarizes the significant characteristics of individualized college English teaching,and puts forward the idea of constructing an individualized college English teaching mode,in the hope that provides some reference for the comprehensive implementation of the current college English teaching reform.
基金the support from Harvard/MITthe support funded by the National Research Foundation(NRF),Prime Minister’s Office,Singapore,under its Campus for Research Excellence and Technological Enterprise(CREATE)program,Grant Number R-706-001-102-281the funding support from Harbin Institute of Technology,China,Grant Number FRFCU5710053121。
文摘We conceptualize bioresource upgrade for sustainable energy,environment,and biomedicine with a focus on circular economy,sustainability,and carbon neutrality using high availability and low utilization biomass(HALUB).We acme energy-efficient technologies for sustainable energy and material recovery and applications.The technologies of thermochemical conversion(TC),biochemical conversion(BC),electrochemical conversion(EC),and photochemical conversion(PTC)are summarized for HALUB.Microalgal biomass could contribute to a biofuel HHV of 35.72 MJ Kg^(-1)and total benefit of 749$/ton biomass via TC.Specific surface area of biochar reached 3000 m^(2)g^(-1)via pyrolytic carbonization of waste bean dregs.Lignocellulosic biomass can be effectively converted into bio-stimulants and biofertilizers via BC with a high conversion efficiency of more than 90%.Besides,lignocellulosic biomass can contribute to a current density of 672 mA m^(-2)via EC.Bioresource can be 100%selectively synthesized via electrocatalysis through EC and PTC.Machine learning,techno-economic analysis,and life cycle analysis are essential to various upgrading approaches of HALUB.Sustainable biomaterials,sustainable living materials and technologies for biomedical and multifunctional applications like nano-catalysis,microfluidic and micro/nanomotors beyond are also highlighted.New techniques and systems for the complete conversion and utilization of HALUB for new energy and materials are further discussed.
基金supported by the National Key R&D Program of China(2018YFE0107100)the National Natural Science Foundation of China(31772529)the Priority of Academic Program Development of Jiangsu Higher Education Institutions(PAPD 4013000011).
文摘The current transition to sustainability and the circular economy can be viewed as a socio-technical response to environmental impacts and the need to enhance the overall performance of the linear production and consumption paradigm.The concept of biowaste refineries as a feasible alternative to petroleum refineries has gained popularity.Biowaste has become an important raw material source for developing bioproducts and biofuels.Therefore,effective environmental biowaste management systems for the production of bioproducts and biofuels are crucial and can be employed as pillars of a circular economy.Bioplastics,typically plastics manufactured from bio-based polymers,stand to contribute to more sustainable commercial plastic life cycles as part of a circular economy in which virgin polymers are made from renewable or recycled raw materials.Various frameworks and strategies are utilized to model and illustrate additional patterns in fossil fuel and bioplastic feedstock prices for various governments'long-term policies.This review paper highlights the harmful impacts of fossil-based plastic on the environment and human health,as well as the mass need for eco-friendly alternatives such as biodegradable bioplastics.Utilizing new types of bioplastics derived from renewable resources(e.g.,biowastes,agricultural wastes,or microalgae)and choosing the appropriate end-of-life option(e.g.,anaerobic digestion)may be the right direction to ensure the sustainability of bioplastic production.Clear regulation and financial incentives are still required to scale from niche polymers to large-scale bioplastic market applications with a truly sustainable impact.
基金the funding support from Harbin Institute of Technology,China(No.FRFCU5710053121).
文摘It is established that monitoring blood glucose on a daily basis is one of the most effective solutions to prevent and treat diabetes.Consequently,developing a glucose sensing platform with outstanding sensing performance occupies an indispensable position for the early diagnosis and risk assessment of diabetes.Recently,biosensor has been deemed as a promising apparatus to acquire the signals for glucose monitoring based on 2D materials.However,it is unsatisfied to deploy some materials widely as a result of some inherent defects.Carbon nanotubes have comparatively high toxicity.MoS_(2) with unfavourable biocompatibility are still arduously implemented on being functionalized.Fortunately,MXene,a brand-new and rapidly developing two-dimensional material,exhibits marvellous application potential in the domain of biosensing.Therefore,it has exerted tremendous attention from diverse scientific fields owning to its remarkable properties,such as excellent hydrophilicity,metal-like conductivity,abundant surface functional groups,unique layered structure,large specific surface area and remarkable biocompatibility.This review mainly focuses on the main synthetic route of MXenes,as well as the recent advancements of biosensors involving MXenes as an electrode modifier for glucose detection.In addition,the promising prospects and challenges of glucose sensing technology based on MXenes are also discussed.
基金supported by the Fundamental Research Funds for the Central Universitiesthe Research Funds of Renmin University of China (11XNL009)
文摘In China, the responsibilitY of protecting the environment lies largely with local governments. Within the framework of spatial econometrics, we investigate empirically the consequence of such an institutional setting. Using city-level data for China, the present study finds that city governments behave strategically in making spending decisions regarding environmental protection. This paper finds that a city government appears to cut its own spending as a response to the rise in environmental protection spending by its neighbors. Hence, environmental protection tends to be underprovided. As a result, we suggest that centralizing the environmental protection responsibility to a higher level of government would be beneficial in terms of controlling pollution in China.