Designing a high-fidelity cutting device is one of the difficulties in hydrate samples pressure-holding transfer.Due to the limitations of the existing mechanical system,there is much damage to the cut surface of hydr...Designing a high-fidelity cutting device is one of the difficulties in hydrate samples pressure-holding transfer.Due to the limitations of the existing mechanical system,there is much damage to the cut surface of hydrate samples,with many chips produced,which seriously affects the quality of samples.In this paper,a new cutting device utilizes two servo motors to achieve a high degree of automation.Using the Archimedes spiral,it achieves low disturbance of the cut surface and provides accurate control of the process.In addition,due to the operation of the sample long-stroke push unit,cutting hydrate samples of any length with almost no chips within a short cutting time can be achieved.Laboratory and sea tests have achieved all design requirements of the equipment and strongly demonstrate its benefit and stability.It is concluded that this new high-fidelity cutting technology is practically efficient.The physical state of the hydrate can be maintained to the greatest extent,and thus the new equipment provides significant support for the exploration and development of hydrate resources.展开更多
With the coordinated development of the current social economy and science and technology, more and more advanced manufacturing technologies have begun to be applied to the field of mechanical engineering, and have pl...With the coordinated development of the current social economy and science and technology, more and more advanced manufacturing technologies have begun to be applied to the field of mechanical engineering, and have played a very significant application advantages. Especially the laser cutting technology, it has a very good application value. In order to realize the good application of laser cutting technology in modern mechanical engineering, the technique and its specific application are analyzed. It is hoped that this analysis can provide a scientific reference for the good application and development of laser cutting technology.展开更多
Shanghai is blazing a new development track powered by dual engines:one is intelligent manufacturing empowered by cutting-edge technologies,and the other is green development driven by low-carbon and energy-saving sol...Shanghai is blazing a new development track powered by dual engines:one is intelligent manufacturing empowered by cutting-edge technologies,and the other is green development driven by low-carbon and energy-saving solutions.On September 10,China Today visited two enterprises in Shanghai-Shanghai Schneider Electric Industrial Control Co.,Ltd.and Huaqin Technology Co.,Ltd.-to observe firsthand how global investment and local innovation are jointly shaping Shanghai’s future of high-quality development.展开更多
This paper mainly introduces the scientific cutting and hoisting construction technology before the large spherical tank(hereinafter referred to as spherical tank)moving and loading,so as to better ensure the construc...This paper mainly introduces the scientific cutting and hoisting construction technology before the large spherical tank(hereinafter referred to as spherical tank)moving and loading,so as to better ensure the construction quality of field assembly and welding in the process of spherical tank moving and loading.展开更多
Precision, Productivity and Performance def ine the GERBERcutter? Z7Tolland, Conn., USA – Gerber Technology, a business unit of Gerber Scientific, Inc. (NYSE: GRB), and the world leader in providing innovative integr...Precision, Productivity and Performance def ine the GERBERcutter? Z7Tolland, Conn., USA – Gerber Technology, a business unit of Gerber Scientific, Inc. (NYSE: GRB), and the world leader in providing innovative integrated software and hardware automation systems to展开更多
At KeAi,our mission is to unfold quality research globally,combining cutting-edge technologies and data insights with a personal approach to everyone we serve and everything we do.
The United States Department of State funded a project focused on civic engagement. The participants were students and faculty at five universities in Pakistan and in the USA. The author is a representative from one o...The United States Department of State funded a project focused on civic engagement. The participants were students and faculty at five universities in Pakistan and in the USA. The author is a representative from one of the USA-based universities. In a fortnightly high-definition videoconference dialogue between students at University of Nebraska at Omaha and Quaid-i-Azam University in Islamabad, the goals of deepening understanding, challenging stereotypes and inspiring community change are being met. This paper will present the preliminary results of an ongoing assessment of how this project has resulted in meeting these goals and suggest what can be done in future projects that will better meet the goals. This will add to the emerging literature on civic engagement and conflict resolution by exploring use of cutting edge technology to build trust and understanding across the world＇s divide.展开更多
The field of drug discovery and development has witnessed remarkable achievements over the past few decades.1 The advent of artificial intelligence(AI)is revolutionizing drug discovery by reducing costs and enhancing ...The field of drug discovery and development has witnessed remarkable achievements over the past few decades.1 The advent of artificial intelligence(AI)is revolutionizing drug discovery by reducing costs and enhancing efficiency.2,3 Nevertheless,drug discovery remains a challenging process with high failure rates,which makes these innovations critical for success.“Drug Discovery Stories(Volume 2),”edited together by Prof.Bin Yu from Zhengzhou University and Prof.Peng Zhan from Shandong University,provides a comprehensive collection of key breakthroughs in contemporary drug discovery(47 chapters).4 Following the publication of volume 1 in 2023,5 volume 2 mainly includes four fundamental aspects(Figure 1):(1)key figures who have shaped the pharmaceutical industry,(2)the critical roles of early development in successful drug discovery,(3)cutting-edge technologies,and(4)blockbuster drugs approved and selected candidates at the clinical stage.By exploring these themes,this volume aims to commemorate key individuals and highlight recent advances in drug discovery.展开更多
In order to study the mechanism of the dual side roof cutting technology on the composite disaster of gas and coal spontaneous combustion in goaf,a model for the evolution of porosity and permeability in the dual side...In order to study the mechanism of the dual side roof cutting technology on the composite disaster of gas and coal spontaneous combustion in goaf,a model for the evolution of porosity and permeability in the dual side roof cutting working face was constructed.The location of the occurrence of the compound disaster of gas explosion and coal spontaneous combustion under the double-sided roof cutting mode was studied,and the sensitivity of the evolution pattern of the compound disaster area to the amount of air supply and gas gush was summarized.The results indicate that the top cutting pressure relief technology significantly reduces the permeability of porous media,and the sensitivity of the goaf on the intake side to airflow disturbances is significantly reduced.As the volume of air supply increases,the distance between the gas explosion risk area and the coal spontaneous combustion risk area gradually decreases,and the probability of composite disaster areas is 0.The increase of air supply and gas emission makes the gas concentration in the middle and deep goaf increase in an exponential function,and the width of the gas explosion risk area increases gradually.When the outflow reaches 40 m^(3)/min,there is no composite disaster zone,indicating that the rapid increase in outflow inhibits the occurrence of composite disasters.展开更多
基金This work is supported by the Key R&D Program of Zhejiang Province(No.2021C03183)the Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)(No.GML2019ZD0506)the National Natural Science Foundation of China(No.2017YFC0307500).
文摘Designing a high-fidelity cutting device is one of the difficulties in hydrate samples pressure-holding transfer.Due to the limitations of the existing mechanical system,there is much damage to the cut surface of hydrate samples,with many chips produced,which seriously affects the quality of samples.In this paper,a new cutting device utilizes two servo motors to achieve a high degree of automation.Using the Archimedes spiral,it achieves low disturbance of the cut surface and provides accurate control of the process.In addition,due to the operation of the sample long-stroke push unit,cutting hydrate samples of any length with almost no chips within a short cutting time can be achieved.Laboratory and sea tests have achieved all design requirements of the equipment and strongly demonstrate its benefit and stability.It is concluded that this new high-fidelity cutting technology is practically efficient.The physical state of the hydrate can be maintained to the greatest extent,and thus the new equipment provides significant support for the exploration and development of hydrate resources.
文摘With the coordinated development of the current social economy and science and technology, more and more advanced manufacturing technologies have begun to be applied to the field of mechanical engineering, and have played a very significant application advantages. Especially the laser cutting technology, it has a very good application value. In order to realize the good application of laser cutting technology in modern mechanical engineering, the technique and its specific application are analyzed. It is hoped that this analysis can provide a scientific reference for the good application and development of laser cutting technology.
文摘Shanghai is blazing a new development track powered by dual engines:one is intelligent manufacturing empowered by cutting-edge technologies,and the other is green development driven by low-carbon and energy-saving solutions.On September 10,China Today visited two enterprises in Shanghai-Shanghai Schneider Electric Industrial Control Co.,Ltd.and Huaqin Technology Co.,Ltd.-to observe firsthand how global investment and local innovation are jointly shaping Shanghai’s future of high-quality development.
文摘This paper mainly introduces the scientific cutting and hoisting construction technology before the large spherical tank(hereinafter referred to as spherical tank)moving and loading,so as to better ensure the construction quality of field assembly and welding in the process of spherical tank moving and loading.
文摘Precision, Productivity and Performance def ine the GERBERcutter? Z7Tolland, Conn., USA – Gerber Technology, a business unit of Gerber Scientific, Inc. (NYSE: GRB), and the world leader in providing innovative integrated software and hardware automation systems to
文摘At KeAi,our mission is to unfold quality research globally,combining cutting-edge technologies and data insights with a personal approach to everyone we serve and everything we do.
文摘The United States Department of State funded a project focused on civic engagement. The participants were students and faculty at five universities in Pakistan and in the USA. The author is a representative from one of the USA-based universities. In a fortnightly high-definition videoconference dialogue between students at University of Nebraska at Omaha and Quaid-i-Azam University in Islamabad, the goals of deepening understanding, challenging stereotypes and inspiring community change are being met. This paper will present the preliminary results of an ongoing assessment of how this project has resulted in meeting these goals and suggest what can be done in future projects that will better meet the goals. This will add to the emerging literature on civic engagement and conflict resolution by exploring use of cutting edge technology to build trust and understanding across the world＇s divide.
基金financial support from the Natural Science Foundation of Henan Province(nos.242301420005 and 252300421243)the Key Research Project for Basic Research in Henan Province Universities(no.25ZX001).
文摘The field of drug discovery and development has witnessed remarkable achievements over the past few decades.1 The advent of artificial intelligence(AI)is revolutionizing drug discovery by reducing costs and enhancing efficiency.2,3 Nevertheless,drug discovery remains a challenging process with high failure rates,which makes these innovations critical for success.“Drug Discovery Stories(Volume 2),”edited together by Prof.Bin Yu from Zhengzhou University and Prof.Peng Zhan from Shandong University,provides a comprehensive collection of key breakthroughs in contemporary drug discovery(47 chapters).4 Following the publication of volume 1 in 2023,5 volume 2 mainly includes four fundamental aspects(Figure 1):(1)key figures who have shaped the pharmaceutical industry,(2)the critical roles of early development in successful drug discovery,(3)cutting-edge technologies,and(4)blockbuster drugs approved and selected candidates at the clinical stage.By exploring these themes,this volume aims to commemorate key individuals and highlight recent advances in drug discovery.
基金supported by the National Natural Science Foundation of China(No.52204090).
文摘In order to study the mechanism of the dual side roof cutting technology on the composite disaster of gas and coal spontaneous combustion in goaf,a model for the evolution of porosity and permeability in the dual side roof cutting working face was constructed.The location of the occurrence of the compound disaster of gas explosion and coal spontaneous combustion under the double-sided roof cutting mode was studied,and the sensitivity of the evolution pattern of the compound disaster area to the amount of air supply and gas gush was summarized.The results indicate that the top cutting pressure relief technology significantly reduces the permeability of porous media,and the sensitivity of the goaf on the intake side to airflow disturbances is significantly reduced.As the volume of air supply increases,the distance between the gas explosion risk area and the coal spontaneous combustion risk area gradually decreases,and the probability of composite disaster areas is 0.The increase of air supply and gas emission makes the gas concentration in the middle and deep goaf increase in an exponential function,and the width of the gas explosion risk area increases gradually.When the outflow reaches 40 m^(3)/min,there is no composite disaster zone,indicating that the rapid increase in outflow inhibits the occurrence of composite disasters.
