Plant virus disease is one of the major causes of biological disasters in agriculture worldwide. Given the complexity of transmission media and plant disease infection mechanisms, the prevention and control of plant v...Plant virus disease is one of the major causes of biological disasters in agriculture worldwide. Given the complexity of transmission media and plant disease infection mechanisms, the prevention and control of plant viral diseases is a great challenge, and an efficient green pesticide is urgently needed. For this reason, when developing candidate drug leads to regulate plant viruses, pesticide experts have focused on characteristics such as low pesticide resistance, eco-friendliness, and novel mechanism. Researchers have also theoretically investigated the molecular targets of viruses infecting agricultural crops. Antiviral screening models have been constructed based on these molecular targets, and the mechanisms of commercial drugs and high-activity compounds have been extensively investigated. After screening, some compounds have been applied in the field and found to have good commercial prospects; these drugs may be used to create new green antiviral pesticides to control plant viruses. This paper reviews the screening, mode of action, development and application of recently used plant-based antiviral agents.展开更多
The application of tillering fertilizer plays an important role in promoting rice tillering and improving rice yield. However, under the condition of mechanical transplanting, the optimal application time of tillering...The application of tillering fertilizer plays an important role in promoting rice tillering and improving rice yield. However, under the condition of mechanical transplanting, the optimal application time of tillering fertilizer is still unclear. In this study, the early rice cultivar Zhongjiazao 17 and late rice cultivar H You 518 were used as materials, and the effects of different application times of tillering fertilizer on yield and population development of double-cropping rice transplanted by machine were investigated. The tillering fertilizer was applied 7（D07）, 10（D10） and 13（D13） d after the transplanting, respectively. The results showed that compared with those in the D07 treatment groups, the yield of early rice in the D10 and D13 treatment groups were reduced by 9.4% and 3.8%, respectively, and the yield of late rice in the D10 and D13 treatment groups were reduced by 4.5% and 12.6%,respectively. However, there were no significant differences in rice yield among the treatment groups. The application time of tillering fertilizer showed significant effects on grain number per panicle and seed setting rate of early rice. The grain number per panicle in the D10 treatment group was significantly lower than that in the D07 treatment group, and the seed setting rate of the D13 treatment group was significantly lower than that in the D07 treatment group（P〈0.05）. For the late rice, the effect of application time of tillering fertilizer on effective tiller number was most obvious, and the effective tiller number in the D13 treatment group was significantly lower than that in the D07 treatment group（P〈0.05）. Compared with those in the D07 treatment group, the effective tiller numbers, leaf area indexes and biomasses in the D10 and D13 treatment groups were all trended to be decreased. Therefore,to improve the quality of population and fulfill the high-yielding potential of double-cropping rice transplanted by machine, the tillering fertilizer should be applied as early as possible after rice seedlings turn green.展开更多
In recent years, mechanical automation technology has been widely used in all walks of life, which has virtually promoted the development of the industry and improved the level of industrial production. With the accel...In recent years, mechanical automation technology has been widely used in all walks of life, which has virtually promoted the development of the industry and improved the level of industrial production. With the acceleration of the development of machinery manufacturing industry in recent years, machine automation technology is also gradually updated to adapt to the development form of the industry. Therefore, it is necessary to analyze the application and development of mechanical automation technology, and further explore the direction of automatic production on the basis of clarifying the technical application, so as to provide a continuous driving force for the development of the industry. Based on this, this paper discusses the development and application of mechanical engineering and automation technology.展开更多
Researches about ancient needling,technique,have been made for many decades,whereas the results are discrepant.People tried to use modern science to explore thoroughly about the real structure of acupuncture functions...Researches about ancient needling,technique,have been made for many decades,whereas the results are discrepant.People tried to use modern science to explore thoroughly about the real structure of acupuncture functions.Much more progress has been made than the last century.This review summarized some of the most prevailed theories about the mechanisms of acupuncture and their common applications.And lastly,this article discussed the future development for acupuncture。展开更多
The development of modern science and technology has promoted the overlapping and mutual penetration among different disciplines, which led to the technological innovations in the field of mechanical engineering. The ...The development of modern science and technology has promoted the overlapping and mutual penetration among different disciplines, which led to the technological innovations in the field of mechanical engineering. The mechatronics technology conforms to the law of development of science and technology in today, and combines the mechanical technology and electronic technology together to integrate the logistics, energy flow and information flow. This paper briefly describes the concept of mechatronics and the elements of mechatronics technology, and elaborates on the application of mechatronics technology in three different areas of the Machinery Industry in the form of living examples, finally introduces the future developing direction of mechatronics technology.展开更多
Unsustainable fossil fuel energy usage and its environmental impacts are the most significant scientific challenges in the scientific community.Two-dimensional(2D)materials have received a lot of attention recently be...Unsustainable fossil fuel energy usage and its environmental impacts are the most significant scientific challenges in the scientific community.Two-dimensional(2D)materials have received a lot of attention recently because of their great potential for application in addressing some of society’s most enduring issues with renewable energy.Transition metal-based nitrides,carbides,or carbonitrides,known as“MXenes”,are a relatively new and large family of 2D materials.Since the discovery of the first MXene,Ti_(3)C_(2) in 2011 has become one of the fastest-expanding families of 2D materials with unique physiochemical features.MXene surface terminations with hydroxyl,oxygen,fluorine,etc.,are invariably present in the so far reported materials,imparting hydrophilicity to their surfaces.The current finding of multi-transition metal-layered MXenes with controlled surface termination capacity opens the door to fabricating unique structures for producing renewable energy.MXene NMs-based flexible chemistry allows them to be tuned for energy-producing/storage,electromagnetic interference shielding,gas/biosensors,water distillation,nanocomposite reinforcement,lubrication,and photo/electro/chemical catalysis.This review will first discuss the advancement of MXenes synthesis methods,their properties/stability,and renewable energy applications.Secondly,we will highlight the constraints and challenges that impede the scientific community from synthesizing functional MXene with controlled composition and properties.We will further reveal the high-tech implementations for renewable energy storage applications along with future challenges and their solutions.展开更多
Combined with practical case, the paper elaborates the development and applications of mechanical drawing, mechanical design and manufacturing based on Solidworks software. By combining professional courses between ea...Combined with practical case, the paper elaborates the development and applications of mechanical drawing, mechanical design and manufacturing based on Solidworks software. By combining professional courses between each other, the knowledge continuously through different courses can enhance students＇ enthusiasm for the course and make more reasonable arrangement for the courses.展开更多
Serving as a classic and interesting strategy,gas–solid phase chemiluminescence(CL)has recently been a rapidly growing area where CL is emitted through chemical reactions between gas and solid reactants occurred on t...Serving as a classic and interesting strategy,gas–solid phase chemiluminescence(CL)has recently been a rapidly growing area where CL is emitted through chemical reactions between gas and solid reactants occurred on the surface of solid matter.This CL system provided a sensitive and simple spectral method for investigating gas–solid phase reactions while information on the rate constants,intermediate productions,surface states and reaction mechanisms of interaction could be acquired.Recent progresses mainly concentrate on development of new gas–solid phase CL systems and their practical applications.This review paper summarized main classifications,mechanisms and applications of gas–solid phase CL.The future prospects for gas–solid phase CL are discussed.展开更多
基金supported by the National Natural Science Foundation of China (21132003, 31460460, 21502032 and 21732002)the Subsidy Project for Outstanding Key Laboratory of Guizhou Province in China (20154004)+1 种基金the Provincial University Cooperation Plan of Guizhou Province in China (20147001)the Collaborative Innovation Center for Natural Products and Biological Drugs of Yunnan, China
文摘Plant virus disease is one of the major causes of biological disasters in agriculture worldwide. Given the complexity of transmission media and plant disease infection mechanisms, the prevention and control of plant viral diseases is a great challenge, and an efficient green pesticide is urgently needed. For this reason, when developing candidate drug leads to regulate plant viruses, pesticide experts have focused on characteristics such as low pesticide resistance, eco-friendliness, and novel mechanism. Researchers have also theoretically investigated the molecular targets of viruses infecting agricultural crops. Antiviral screening models have been constructed based on these molecular targets, and the mechanisms of commercial drugs and high-activity compounds have been extensively investigated. After screening, some compounds have been applied in the field and found to have good commercial prospects; these drugs may be used to create new green antiviral pesticides to control plant viruses. This paper reviews the screening, mode of action, development and application of recently used plant-based antiviral agents.
基金Supported by Key Project of the National Twelfth-Five Year Research Program of China(2011BAD16B04)"Gan-Po Talent 555"Project of Jiangxi Province[GCZ2012(1)]+2 种基金National Transformation Fund for Agricultural Science and Technology Achievements(2013GB2C500244)Science and Technology Plan of Action for Universities and Colleges in Jiangxi Province(12003)Special Fund for Agro-Scientific Research in the Public Interest(201303102)~~
文摘The application of tillering fertilizer plays an important role in promoting rice tillering and improving rice yield. However, under the condition of mechanical transplanting, the optimal application time of tillering fertilizer is still unclear. In this study, the early rice cultivar Zhongjiazao 17 and late rice cultivar H You 518 were used as materials, and the effects of different application times of tillering fertilizer on yield and population development of double-cropping rice transplanted by machine were investigated. The tillering fertilizer was applied 7（D07）, 10（D10） and 13（D13） d after the transplanting, respectively. The results showed that compared with those in the D07 treatment groups, the yield of early rice in the D10 and D13 treatment groups were reduced by 9.4% and 3.8%, respectively, and the yield of late rice in the D10 and D13 treatment groups were reduced by 4.5% and 12.6%,respectively. However, there were no significant differences in rice yield among the treatment groups. The application time of tillering fertilizer showed significant effects on grain number per panicle and seed setting rate of early rice. The grain number per panicle in the D10 treatment group was significantly lower than that in the D07 treatment group, and the seed setting rate of the D13 treatment group was significantly lower than that in the D07 treatment group（P〈0.05）. For the late rice, the effect of application time of tillering fertilizer on effective tiller number was most obvious, and the effective tiller number in the D13 treatment group was significantly lower than that in the D07 treatment group（P〈0.05）. Compared with those in the D07 treatment group, the effective tiller numbers, leaf area indexes and biomasses in the D10 and D13 treatment groups were all trended to be decreased. Therefore,to improve the quality of population and fulfill the high-yielding potential of double-cropping rice transplanted by machine, the tillering fertilizer should be applied as early as possible after rice seedlings turn green.
文摘In recent years, mechanical automation technology has been widely used in all walks of life, which has virtually promoted the development of the industry and improved the level of industrial production. With the acceleration of the development of machinery manufacturing industry in recent years, machine automation technology is also gradually updated to adapt to the development form of the industry. Therefore, it is necessary to analyze the application and development of mechanical automation technology, and further explore the direction of automatic production on the basis of clarifying the technical application, so as to provide a continuous driving force for the development of the industry. Based on this, this paper discusses the development and application of mechanical engineering and automation technology.
文摘Researches about ancient needling,technique,have been made for many decades,whereas the results are discrepant.People tried to use modern science to explore thoroughly about the real structure of acupuncture functions.Much more progress has been made than the last century.This review summarized some of the most prevailed theories about the mechanisms of acupuncture and their common applications.And lastly,this article discussed the future development for acupuncture。
文摘The development of modern science and technology has promoted the overlapping and mutual penetration among different disciplines, which led to the technological innovations in the field of mechanical engineering. The mechatronics technology conforms to the law of development of science and technology in today, and combines the mechanical technology and electronic technology together to integrate the logistics, energy flow and information flow. This paper briefly describes the concept of mechatronics and the elements of mechatronics technology, and elaborates on the application of mechatronics technology in three different areas of the Machinery Industry in the form of living examples, finally introduces the future developing direction of mechatronics technology.
文摘Unsustainable fossil fuel energy usage and its environmental impacts are the most significant scientific challenges in the scientific community.Two-dimensional(2D)materials have received a lot of attention recently because of their great potential for application in addressing some of society’s most enduring issues with renewable energy.Transition metal-based nitrides,carbides,or carbonitrides,known as“MXenes”,are a relatively new and large family of 2D materials.Since the discovery of the first MXene,Ti_(3)C_(2) in 2011 has become one of the fastest-expanding families of 2D materials with unique physiochemical features.MXene surface terminations with hydroxyl,oxygen,fluorine,etc.,are invariably present in the so far reported materials,imparting hydrophilicity to their surfaces.The current finding of multi-transition metal-layered MXenes with controlled surface termination capacity opens the door to fabricating unique structures for producing renewable energy.MXene NMs-based flexible chemistry allows them to be tuned for energy-producing/storage,electromagnetic interference shielding,gas/biosensors,water distillation,nanocomposite reinforcement,lubrication,and photo/electro/chemical catalysis.This review will first discuss the advancement of MXenes synthesis methods,their properties/stability,and renewable energy applications.Secondly,we will highlight the constraints and challenges that impede the scientific community from synthesizing functional MXene with controlled composition and properties.We will further reveal the high-tech implementations for renewable energy storage applications along with future challenges and their solutions.
文摘Combined with practical case, the paper elaborates the development and applications of mechanical drawing, mechanical design and manufacturing based on Solidworks software. By combining professional courses between each other, the knowledge continuously through different courses can enhance students＇ enthusiasm for the course and make more reasonable arrangement for the courses.
基金the National Natural Science Foundation of China(Nos.21227006,21435002,81373373,21621003).
文摘Serving as a classic and interesting strategy,gas–solid phase chemiluminescence(CL)has recently been a rapidly growing area where CL is emitted through chemical reactions between gas and solid reactants occurred on the surface of solid matter.This CL system provided a sensitive and simple spectral method for investigating gas–solid phase reactions while information on the rate constants,intermediate productions,surface states and reaction mechanisms of interaction could be acquired.Recent progresses mainly concentrate on development of new gas–solid phase CL systems and their practical applications.This review paper summarized main classifications,mechanisms and applications of gas–solid phase CL.The future prospects for gas–solid phase CL are discussed.
