Owing to the specific qualities,the main spectator sports business is susceptible to the ongoing pandemic.The sports sector is reliant on high-level sporting tournaments that need a lot of manpower to run.The signific...Owing to the specific qualities,the main spectator sports business is susceptible to the ongoing pandemic.The sports sector is reliant on high-level sporting tournaments that need a lot of manpower to run.The significance of the core product is inextricably linked to a variety of ancillary entertainment elements that have been meticulously created to draw in a large number of attendees or spectators.The value of entertainment at issue in the sports industry is primarily created by two sources:athletic events on-field and event components and accessories.The paper examines the state of sports following the pandemic,recovery options,and the future of sports,as well as the numerous effects and difficulties that have occurred as a result of COVID-19-induced developments in the sector.This paper is highly important for the sports industry such as sports managers,broadcasters,media managers,marketers,researchers,practitioners and students who are interested in learning about COVID-19 and its impact on athletes and coaches,the market value of sports,consumer behaviour;and how the situation will be for the sports industry in the post-COVID-19 world.展开更多
Chromium(Cr)typically exists in either trivalent and hexavalent oxidation states in drinking water,i.e.,Cr(Ⅲ)and Cr(Ⅵ),with Cr(Ⅵ)of particular concern in recent years due to its high toxicity and new regulatory sta...Chromium(Cr)typically exists in either trivalent and hexavalent oxidation states in drinking water,i.e.,Cr(Ⅲ)and Cr(Ⅵ),with Cr(Ⅵ)of particular concern in recent years due to its high toxicity and new regulatory standards.This Account presented a critical analysis of the sources and occurrence of Cr(Ⅵ)in drinking water in the United States,analyzed the equilibrium chemistry of Cr(Ⅵ)species,summarized important redox reaction relevant to the fate of Cr(Ⅵ)in drinking water,and critically reviewed emerging Cr(Ⅵ)treatment technologies.There is a wide occurrence of Cr(Ⅵ)in US source drinking water,with a strong dependence on groundwater sources,mainly due to naturally weathering of chromium-containing aquifers.Challenges regarding traditional Cr(Ⅵ)treatment include chemical cost,generation of secondary waste and inadvertent re-generation of Cr(Ⅵ)after treatment.To overcome these challenges,reductive Cr(Ⅵ)treatment technologies based on the application of stannous tin or electron-releasing titanium dioxide photocatalyst hold extreme promise in the future.To moving forward in the right direction,three key questions need further exploration for the technology implementation,including effective management of residual waste,minimizing the risks of Cr(Ⅵ)re-occurrence downstream of drinking water treatment plant,and promote the socioeconomic drivers for Cr(Ⅵ)control in the future.展开更多
Graphene, a two-dimensional material with outstanding electrical and mechanical properties, has attracted considerable attention in the field of semiconductor technologies due to its potential use as a buffer layer fo...Graphene, a two-dimensional material with outstanding electrical and mechanical properties, has attracted considerable attention in the field of semiconductor technologies due to its potential use as a buffer layer for the epitaxial Ⅲ-nitride growth. In recent years, significant progress has been made in the chemical vapor deposition growth of graphene on various insulating substrates for the nitride epitaxy, which offers a facile, inexpensive, and easily scalable methodology. However, certain challenges are still present in the form of producing high-quality graphene and achieving optimal interface compatibility with Ⅲ-nitride materials.In this review, we provide an overview of the bottlenecks associated with the transferred graphene fabrication techniques and the state-of-the-art techniques for the transfer-free graphene growth. The present contribution highlights the current progress in the transfer-free graphene growth on different insulating substrates, including sapphire, quartz, SiO_(2)/Si, and discusses the potential applications of transfer-free graphene in the Ⅲ-nitride epitaxy. Finally, it includes the prospects of the transfer-free graphene growth for the Ⅲ-nitride epitaxy and the challenges that should be overcome to realize its full potential in this field.展开更多
Traumatic spinal cord injury（SCI）remains a devastating neurological disorder leading to severe consequences for the affected individual and their families.Further,socioeconomic implications should not be neglected a...Traumatic spinal cord injury（SCI）remains a devastating neurological disorder leading to severe consequences for the affected individual and their families.Further,socioeconomic implications should not be neglected as well.Although life expectancy after SCI increased tremendously,therapeutic treatment options remain limited.展开更多
Blast furnace ironmaking in the new era has the characteristics of intensive and large-scale, and the advantages of long-life and high efficiency of iron smelting process are obvious. However, it is undeniable that ev...Blast furnace ironmaking in the new era has the characteristics of intensive and large-scale, and the advantages of long-life and high efficiency of iron smelting process are obvious. However, it is undeniable that even though computer technology promotes the intelligent development of ironmaking process, there are still problems of large energy consumption and serious environmental pollution in ironmaking production at this stage, which is not in line with China's green and sustainable development strategy. Based on this, in the development of high furnace ironmaking technology in the new era, we should pay attention to the transformation of ironmaking production technology towards low-carbon and green.展开更多
This article first outlines the fundamental definitions of Mycoplasma pneumoniae and the basic principles of antibiotics. It then analyzes and discusses the progress in antibiotic application and time-eff ect studies ...This article first outlines the fundamental definitions of Mycoplasma pneumoniae and the basic principles of antibiotics. It then analyzes and discusses the progress in antibiotic application and time-eff ect studies for neonatal pneumonia treatment, specifically comparing conventional antibiotic therapy with stepwise treatment regimens, and contrasting monotherapy with penicillin, monotherapy with cephalosporins, and combination therapy. Finally, it offers a prospective outlook on antibiotic application and time-effect research in neonatal pneumonia treatment, aiming to provide valuable reference for further scholarly investigations.展开更多
At present,textbooks based on core literacy have become the inevitable demands of China’s curriculum reform,and the literacy of textbook goal construction is the key to the implementation of core literacy requirement...At present,textbooks based on core literacy have become the inevitable demands of China’s curriculum reform,and the literacy of textbook goal construction is the key to the implementation of core literacy requirements,which is a huge challenge for textbook compilers.In this paper,we use the visual metrology of the CiteSpace knowledge graph to analyze Chinese mathematics textbooks(1999-2024),hoping to guide the future direction of Chinese mathematics textbook research.展开更多
This paper introduces the current application status and technical level development of large section conductor and heat-resistant conductor transmission technology in China, analyzes the role of the two design scheme...This paper introduces the current application status and technical level development of large section conductor and heat-resistant conductor transmission technology in China, analyzes the role of the two design schemes of large section conductor and heat-resistant conductor in promoting the establishment of power system stability, and analyzes the characteristics of the two transmission technologies combined with the application of the two transmission modes in China's power system advantages and future development space. Due to the shortage of line corridors in some areas of China, in order to meet people's power demand, it is necessary to transform the transmission line, compare the application value, parameter calculation and economic benefits of heat-resistant conductor and large section conductor, so as to contribute to the engineering development of overhead transmission line projects in China.展开更多
文摘Owing to the specific qualities,the main spectator sports business is susceptible to the ongoing pandemic.The sports sector is reliant on high-level sporting tournaments that need a lot of manpower to run.The significance of the core product is inextricably linked to a variety of ancillary entertainment elements that have been meticulously created to draw in a large number of attendees or spectators.The value of entertainment at issue in the sports industry is primarily created by two sources:athletic events on-field and event components and accessories.The paper examines the state of sports following the pandemic,recovery options,and the future of sports,as well as the numerous effects and difficulties that have occurred as a result of COVID-19-induced developments in the sector.This paper is highly important for the sports industry such as sports managers,broadcasters,media managers,marketers,researchers,practitioners and students who are interested in learning about COVID-19 and its impact on athletes and coaches,the market value of sports,consumer behaviour;and how the situation will be for the sports industry in the post-COVID-19 world.
基金This work was supported by the US National Science Foundation CAREER Program(CBET-1653931)We thank current and former members of the Liu group at UC Riverside who have contributed to this effort,as well as the emotional support from Jacob Y.Liu to complete this article during the COVID-19 pandemic.
文摘Chromium(Cr)typically exists in either trivalent and hexavalent oxidation states in drinking water,i.e.,Cr(Ⅲ)and Cr(Ⅵ),with Cr(Ⅵ)of particular concern in recent years due to its high toxicity and new regulatory standards.This Account presented a critical analysis of the sources and occurrence of Cr(Ⅵ)in drinking water in the United States,analyzed the equilibrium chemistry of Cr(Ⅵ)species,summarized important redox reaction relevant to the fate of Cr(Ⅵ)in drinking water,and critically reviewed emerging Cr(Ⅵ)treatment technologies.There is a wide occurrence of Cr(Ⅵ)in US source drinking water,with a strong dependence on groundwater sources,mainly due to naturally weathering of chromium-containing aquifers.Challenges regarding traditional Cr(Ⅵ)treatment include chemical cost,generation of secondary waste and inadvertent re-generation of Cr(Ⅵ)after treatment.To overcome these challenges,reductive Cr(Ⅵ)treatment technologies based on the application of stannous tin or electron-releasing titanium dioxide photocatalyst hold extreme promise in the future.To moving forward in the right direction,three key questions need further exploration for the technology implementation,including effective management of residual waste,minimizing the risks of Cr(Ⅵ)re-occurrence downstream of drinking water treatment plant,and promote the socioeconomic drivers for Cr(Ⅵ)control in the future.
基金supported by the National Key R&D Program of China(2019YFA0708204)National Natural Science Foundation of China(T2188101)+1 种基金Science Fund for Distinguished Young Scholars of Jiangsu Province(BK20211503)Jiangsu Funding Program for Excellent Postdoctoral Talent(2022ZB595)。
文摘Graphene, a two-dimensional material with outstanding electrical and mechanical properties, has attracted considerable attention in the field of semiconductor technologies due to its potential use as a buffer layer for the epitaxial Ⅲ-nitride growth. In recent years, significant progress has been made in the chemical vapor deposition growth of graphene on various insulating substrates for the nitride epitaxy, which offers a facile, inexpensive, and easily scalable methodology. However, certain challenges are still present in the form of producing high-quality graphene and achieving optimal interface compatibility with Ⅲ-nitride materials.In this review, we provide an overview of the bottlenecks associated with the transferred graphene fabrication techniques and the state-of-the-art techniques for the transfer-free graphene growth. The present contribution highlights the current progress in the transfer-free graphene growth on different insulating substrates, including sapphire, quartz, SiO_(2)/Si, and discusses the potential applications of transfer-free graphene in the Ⅲ-nitride epitaxy. Finally, it includes the prospects of the transfer-free graphene growth for the Ⅲ-nitride epitaxy and the challenges that should be overcome to realize its full potential in this field.
文摘Traumatic spinal cord injury（SCI）remains a devastating neurological disorder leading to severe consequences for the affected individual and their families.Further,socioeconomic implications should not be neglected as well.Although life expectancy after SCI increased tremendously,therapeutic treatment options remain limited.
文摘Blast furnace ironmaking in the new era has the characteristics of intensive and large-scale, and the advantages of long-life and high efficiency of iron smelting process are obvious. However, it is undeniable that even though computer technology promotes the intelligent development of ironmaking process, there are still problems of large energy consumption and serious environmental pollution in ironmaking production at this stage, which is not in line with China's green and sustainable development strategy. Based on this, in the development of high furnace ironmaking technology in the new era, we should pay attention to the transformation of ironmaking production technology towards low-carbon and green.
文摘This article first outlines the fundamental definitions of Mycoplasma pneumoniae and the basic principles of antibiotics. It then analyzes and discusses the progress in antibiotic application and time-eff ect studies for neonatal pneumonia treatment, specifically comparing conventional antibiotic therapy with stepwise treatment regimens, and contrasting monotherapy with penicillin, monotherapy with cephalosporins, and combination therapy. Finally, it offers a prospective outlook on antibiotic application and time-effect research in neonatal pneumonia treatment, aiming to provide valuable reference for further scholarly investigations.
文摘At present,textbooks based on core literacy have become the inevitable demands of China’s curriculum reform,and the literacy of textbook goal construction is the key to the implementation of core literacy requirements,which is a huge challenge for textbook compilers.In this paper,we use the visual metrology of the CiteSpace knowledge graph to analyze Chinese mathematics textbooks(1999-2024),hoping to guide the future direction of Chinese mathematics textbook research.
文摘This paper introduces the current application status and technical level development of large section conductor and heat-resistant conductor transmission technology in China, analyzes the role of the two design schemes of large section conductor and heat-resistant conductor in promoting the establishment of power system stability, and analyzes the characteristics of the two transmission technologies combined with the application of the two transmission modes in China's power system advantages and future development space. Due to the shortage of line corridors in some areas of China, in order to meet people's power demand, it is necessary to transform the transmission line, compare the application value, parameter calculation and economic benefits of heat-resistant conductor and large section conductor, so as to contribute to the engineering development of overhead transmission line projects in China.
