Recent advancements in additive manufacturing(AM)have revolutionized the design and production of complex engineering microstructures.Despite these advancements,their mathematical modeling and computational analysis r...Recent advancements in additive manufacturing(AM)have revolutionized the design and production of complex engineering microstructures.Despite these advancements,their mathematical modeling and computational analysis remain significant challenges.This research aims to develop an effective computational method for analyzing the free vibration of functionally graded(FG)microplates under high temperatures while resting on a Pasternak foundation(PF).This formulation leverages a new thirdorder shear deformation theory(new TSDT)for improved accuracy without requiring shear correction factors.Additionally,the modified couple stress theory(MCST)is incorporated to account for sizedependent effects in microplates.The PF is characterized by two parameters including spring stiffness(k_(w))and shear layer stiffness(k_(s)).To validate the proposed method,the results obtained are compared with those of the existing literature.Furthermore,numerical examples explore the influence of various factors on the high-temperature free vibration of FG microplates.These factors include the length scale parameter(l),geometric dimensions,material properties,and the presence of the elastic foundation.The findings significantly enhance our comprehension of the free vibration of FG microplates in high thermal environments.In addition,the findings significantly enhance our comprehension of the free vibration of FG microplates in high thermal environments.In addition,the results of this research will have great potential in military and defense applications such as components of submarines,fighter aircraft,and missiles.展开更多
News is an important medium to transmit social information and reflect social reality. Its effects are irreplaceable and the news language which is a carrier to spread information is in fact influenced by many factors...News is an important medium to transmit social information and reflect social reality. Its effects are irreplaceable and the news language which is a carrier to spread information is in fact influenced by many factors such as society, economy and culture. In order to exert its function to gain different social ends, the presentation of news language owns distinguishing features. This article starts from Verschueren's Adaption Theory to have the final conclusion that the adaption to the social, mental and physical world is the key element for the determination of the originality in news language.展开更多
In this paper, Noblesse's New Slender-Ship Wave-Making Theory was investigated numerically. Detailed expressions of zeroth and lst order wave resistance have been derived and calculation programs have also been co...In this paper, Noblesse's New Slender-Ship Wave-Making Theory was investigated numerically. Detailed expressions of zeroth and lst order wave resistance have been derived and calculation programs have also been compiled. In the single and double integral terms of Green function, the kernel function of wave resistance expression, special function expansion method and Chebyshev polynomials approach have been adopted respectively, which greatly simplify the calculation and increase the convergence speed.展开更多
Schematic illustration of the PEO of the carbon steel in 8 g·L^-1 NaAlO2+2 g·L^-1 NaH 2PO4:(a)the sample before the application of anodic current,(b)the moment after the application of anodic current,(c)the ...Schematic illustration of the PEO of the carbon steel in 8 g·L^-1 NaAlO2+2 g·L^-1 NaH 2PO4:(a)the sample before the application of anodic current,(b)the moment after the application of anodic current,(c)the deposition of an aluminum phosphates or AAP layer on the steel surface,(d)the initiation of plasma discharges through the breakdown of the dielectric layer,(e)stable discharges at later stage of PEO.展开更多
In this paper, we perform the density functional theory （DFT） -based calculations by the first-principles pseudopo- tential method to investigate the physical properties of the newly discovered superconductor LaRu2A...In this paper, we perform the density functional theory （DFT） -based calculations by the first-principles pseudopo- tential method to investigate the physical properties of the newly discovered superconductor LaRu2As2 for the first time. The optimized structural parameters are in good agreement with the experimental results. The calculated independent elas- tic constants ensure the mechanical stability of the compound. The calculated Cauchy pressure, Pugh＇s ratio as well as Poisson＇s ratio indicate that LaRu2As2 should behave as a ductile material. Due to low Debye temperature, LaRu2As2 may be used as a thermal barrier coating （TBC） material. The new compound should exhibit metallic nature as its valence bands overlap considerably with the conduction bands. LaRu2As2 is expected to be a soft material and easily machinable because of its low hardness value of 6.8 GPa. The multi-band nature is observed in the calculated Fermi surface. A highly anisotropic combination of ionic, covalent and metallic interactions is expected to be in accordance with charge density calculation.展开更多
Based on the earlier work Modern Translation Theory,Mr.Liu Miqing has made a great many modifications in The New Edition of Modern Translation Theory.As the book has exerted a far-reaching influence on the translation...Based on the earlier work Modern Translation Theory,Mr.Liu Miqing has made a great many modifications in The New Edition of Modern Translation Theory.As the book has exerted a far-reaching influence on the translation field,this paper aims to present a relatively comprehensive review of the book and point out its demerits.展开更多
Considering the demands,situations and trends in respect to global climate change,carbon neutrality and energy transition,the achievements and significance of the global green energy transition and the new energy revo...Considering the demands,situations and trends in respect to global climate change,carbon neutrality and energy transition,the achievements and significance of the global green energy transition and the new energy revolution of China are summarized,and the“Energy Triangle”theory is proposed.The research indicates that the energy technology revolution is driving a dual transformation in global energy:the black“shale oil and gas revolution”in North America and the green“new energy revolution”in China.The green energy revolution of China has achieved significant milestones in wind-solar-hydrogen-energy storage technologies,leading the world in photovoltaic and wind power.The country has developed the world's largest,most comprehensive,and competitive new energy innovation,industrial and value chains,along with the largest clean power supply system globally.New quality productive forces represent the green productive forces.The green“new energy revolution”of China has accelerated the transformation of its energy structure and the global shift towards clean energy,promoting a new win-win model for the global green and low-carbon transition.Under the backdrop of a carbon-neutral goal-driven energy transition,the“Energy Triangle”theory within the framework of new quality productive forces explains the correlation and development of energy security,economic growth,and environmental sustainability throughout the evolution from fossil fuels to new energy systems,culminating in an energy revolution.Compared to the global energy resource endowment,the energy resources of China are characterized by abundant coal,limited oil and gas,and unlimited wind and photovoltaic energy.Moving forward,the energy strategies of China will focus on the advancement of technologies to clean coal for carbon emission reduction,increase gas output while stabilizing oil production,increase green energy while enhancing new energy,and achieve intelligent integration.Vigorously developing new energy is an essential step in maintaining the energy security of China,and establishing a carbon-neutral“super energy system”is a necessary choice.It is crucial to enhance the international competitiveness of China in new energy development,promote high-quality energy productive forces,support the country's transition to an“energy power”,and strive for“energy independence”.展开更多
Deeply influenced by traditional teaching and learning mode, we still use inefficient ways to teach and learn. Teachers are still the domain, students are the sub domain. However, with the rapid development of society...Deeply influenced by traditional teaching and learning mode, we still use inefficient ways to teach and learn. Teachers are still the domain, students are the sub domain. However, with the rapid development of society and the change of people' s ideology, language teachers and learner got easier to find that they can not teach and learn in harmony, and many unexpected problems arose, which make them bewildered, so the following questions are often asked:how to teach and how to learn.展开更多
文摘Recent advancements in additive manufacturing(AM)have revolutionized the design and production of complex engineering microstructures.Despite these advancements,their mathematical modeling and computational analysis remain significant challenges.This research aims to develop an effective computational method for analyzing the free vibration of functionally graded(FG)microplates under high temperatures while resting on a Pasternak foundation(PF).This formulation leverages a new thirdorder shear deformation theory(new TSDT)for improved accuracy without requiring shear correction factors.Additionally,the modified couple stress theory(MCST)is incorporated to account for sizedependent effects in microplates.The PF is characterized by two parameters including spring stiffness(k_(w))and shear layer stiffness(k_(s)).To validate the proposed method,the results obtained are compared with those of the existing literature.Furthermore,numerical examples explore the influence of various factors on the high-temperature free vibration of FG microplates.These factors include the length scale parameter(l),geometric dimensions,material properties,and the presence of the elastic foundation.The findings significantly enhance our comprehension of the free vibration of FG microplates in high thermal environments.In addition,the findings significantly enhance our comprehension of the free vibration of FG microplates in high thermal environments.In addition,the results of this research will have great potential in military and defense applications such as components of submarines,fighter aircraft,and missiles.
文摘News is an important medium to transmit social information and reflect social reality. Its effects are irreplaceable and the news language which is a carrier to spread information is in fact influenced by many factors such as society, economy and culture. In order to exert its function to gain different social ends, the presentation of news language owns distinguishing features. This article starts from Verschueren's Adaption Theory to have the final conclusion that the adaption to the social, mental and physical world is the key element for the determination of the originality in news language.
文摘In this paper, Noblesse's New Slender-Ship Wave-Making Theory was investigated numerically. Detailed expressions of zeroth and lst order wave resistance have been derived and calculation programs have also been compiled. In the single and double integral terms of Green function, the kernel function of wave resistance expression, special function expansion method and Chebyshev polynomials approach have been adopted respectively, which greatly simplify the calculation and increase the convergence speed.
文摘Schematic illustration of the PEO of the carbon steel in 8 g·L^-1 NaAlO2+2 g·L^-1 NaH 2PO4:(a)the sample before the application of anodic current,(b)the moment after the application of anodic current,(c)the deposition of an aluminum phosphates or AAP layer on the steel surface,(d)the initiation of plasma discharges through the breakdown of the dielectric layer,(e)stable discharges at later stage of PEO.
文摘In this paper, we perform the density functional theory （DFT） -based calculations by the first-principles pseudopo- tential method to investigate the physical properties of the newly discovered superconductor LaRu2As2 for the first time. The optimized structural parameters are in good agreement with the experimental results. The calculated independent elas- tic constants ensure the mechanical stability of the compound. The calculated Cauchy pressure, Pugh＇s ratio as well as Poisson＇s ratio indicate that LaRu2As2 should behave as a ductile material. Due to low Debye temperature, LaRu2As2 may be used as a thermal barrier coating （TBC） material. The new compound should exhibit metallic nature as its valence bands overlap considerably with the conduction bands. LaRu2As2 is expected to be a soft material and easily machinable because of its low hardness value of 6.8 GPa. The multi-band nature is observed in the calculated Fermi surface. A highly anisotropic combination of ionic, covalent and metallic interactions is expected to be in accordance with charge density calculation.
文摘Based on the earlier work Modern Translation Theory,Mr.Liu Miqing has made a great many modifications in The New Edition of Modern Translation Theory.As the book has exerted a far-reaching influence on the translation field,this paper aims to present a relatively comprehensive review of the book and point out its demerits.
基金Supported by the National Science and Technology Major Special Project Secretariat(2022-5596510-000064)Petro China Science and Technology Special Project(2021ZZ01-05)。
文摘Considering the demands,situations and trends in respect to global climate change,carbon neutrality and energy transition,the achievements and significance of the global green energy transition and the new energy revolution of China are summarized,and the“Energy Triangle”theory is proposed.The research indicates that the energy technology revolution is driving a dual transformation in global energy:the black“shale oil and gas revolution”in North America and the green“new energy revolution”in China.The green energy revolution of China has achieved significant milestones in wind-solar-hydrogen-energy storage technologies,leading the world in photovoltaic and wind power.The country has developed the world's largest,most comprehensive,and competitive new energy innovation,industrial and value chains,along with the largest clean power supply system globally.New quality productive forces represent the green productive forces.The green“new energy revolution”of China has accelerated the transformation of its energy structure and the global shift towards clean energy,promoting a new win-win model for the global green and low-carbon transition.Under the backdrop of a carbon-neutral goal-driven energy transition,the“Energy Triangle”theory within the framework of new quality productive forces explains the correlation and development of energy security,economic growth,and environmental sustainability throughout the evolution from fossil fuels to new energy systems,culminating in an energy revolution.Compared to the global energy resource endowment,the energy resources of China are characterized by abundant coal,limited oil and gas,and unlimited wind and photovoltaic energy.Moving forward,the energy strategies of China will focus on the advancement of technologies to clean coal for carbon emission reduction,increase gas output while stabilizing oil production,increase green energy while enhancing new energy,and achieve intelligent integration.Vigorously developing new energy is an essential step in maintaining the energy security of China,and establishing a carbon-neutral“super energy system”is a necessary choice.It is crucial to enhance the international competitiveness of China in new energy development,promote high-quality energy productive forces,support the country's transition to an“energy power”,and strive for“energy independence”.
文摘Deeply influenced by traditional teaching and learning mode, we still use inefficient ways to teach and learn. Teachers are still the domain, students are the sub domain. However, with the rapid development of society and the change of people' s ideology, language teachers and learner got easier to find that they can not teach and learn in harmony, and many unexpected problems arose, which make them bewildered, so the following questions are often asked:how to teach and how to learn.
