At 23:18 Beijing time on January 5,a LM-3B carrier rocket lifted off from the Xichang Satellite Launch Center,sending a communication technology test satellite into its preset orbit.This successful launch was a good s...At 23:18 Beijing time on January 5,a LM-3B carrier rocket lifted off from the Xichang Satellite Launch Center,sending a communication technology test satellite into its preset orbit.This successful launch was a good start for China’s launch missions in 2017.The Communications Technology Test Satellite 2 was developed by the Shanghai Academy of Spaceflight Technology.It is a next-generation telecom-展开更多
On October 14, two satellites SJ-9A/B were sent into their preset orbits by a LM-2C/SMA launch vehicle, which is the first flight of a series of China's civilian technology experimental satellites. SJ-9A and B are...On October 14, two satellites SJ-9A/B were sent into their preset orbits by a LM-2C/SMA launch vehicle, which is the first flight of a series of China's civilian technology experimental satellites. SJ-9A and B are the first two satellites in the series of civilian technology experimental satellites designed for tests such as long lifetime and high reliability, high precision and high performance of satellite, domestically developed core components, satellite formation展开更多
Subgrade engineering is a fundamental aspect of infrastructure construction in China.As the primary structural element responsible for bearing and distributing traffic loads,the subgrade must not only withstand the su...Subgrade engineering is a fundamental aspect of infrastructure construction in China.As the primary structural element responsible for bearing and distributing traffic loads,the subgrade must not only withstand the substantial pressures exerted by vehicles,trains,and other forms of transportation,but also efficiently transfer these loads to the underlying foundation,ensuring the stability and longevity of the roadway.In recent years,advancements in subgrade engineering technology have propelled the industry towards smarter,greener,and more sustainable practices,particularly in the areas of intelligent monitoring,disaster management,and innovative construction methods.This paper reviews the application and methodologies of intelligent testing equipment,including cone penetration testing(CPT)devices,soil resistivity testers,and intelligent rebound testers,in subgrade engineering.It examines the operating principles,advantages,limitations,and application ranges of these tools in subgrade testing.Additionally,the paper evaluates the practical use of advanced equipment from both domestic and international perspectives,addressing the challenges encountered by various instruments in realworld applications.These devices enable precise,comprehensive testing and evaluation of subgrade conditions at different stages,providing real-time data analysis and intelligent early warnings.This supports effective subgrade health management and maintenance.As intelligent technologies continue to evolve and integrate,these tools will increasingly enhance the accuracy,efficiency,and sustainability of subgrade monitoring.展开更多
This article takes the actual construction project of a certain concrete bridge project as an example to analyze the application of acoustic non-destructive testing technology in its detection.It includes an overview ...This article takes the actual construction project of a certain concrete bridge project as an example to analyze the application of acoustic non-destructive testing technology in its detection.It includes an overview of a certain bridge construction project studied and acoustic non-destructive testing technology and the application of acoustic non-destructive testing technology in actual testing.This analysis hopes to provide some guidelines for acoustic non-destructive testing of modern concrete bridge projects.展开更多
With the continuous development of today's science and technology,orthopedic research has also achieved continuous updates in materials and machinery.In this case,the mechanics testing technology of orthopedics al...With the continuous development of today's science and technology,orthopedic research has also achieved continuous updates in materials and machinery.In this case,the mechanics testing technology of orthopedics also needs to be further updated and developed,so that it can effectively meet the requirement for today's orthopedic mechanical testing.Based on this,this article analyzes several advanced orthopedic mechanics testing techniques.It is hoped that this analysis can provide a reference for the good application and development of orthopedic mechanics testing technology.展开更多
Highway test and detection technology play a very important role in controlling the quality of road and bridge engineering and improving the maintenance of roads and bridges.The study of highway bridge test detection ...Highway test and detection technology play a very important role in controlling the quality of road and bridge engineering and improving the maintenance of roads and bridges.The study of highway bridge test detection technology is both theoretically and practically useful.Road and bridge test and detection is a complicated task.With the development of science and technology,highway and bridge engineering test and detection technology has also made great progress.The continuous improvement of test and detection technology has brought good social benefits to road and bridge construction.This article discusses the problems in test and detection technology of highway bridges and how to improve the quality of test and detection.展开更多
At present, the problem of environmental loss is becoming more and more serious. In order to realize the sustainable development of the environment, it is necessary to increase the research of environmental monitoring...At present, the problem of environmental loss is becoming more and more serious. In order to realize the sustainable development of the environment, it is necessary to increase the research of environmental monitoring technology. If the environment is polluted, it will bring a series of chain reactions. If the specific pollution problem cannot be effectively controlled in a timely manner, it will seriously damage the entire ecosystem. At the same time, it will be irreversible. The environment on which people depend for their survival will also be adversely affected. If it continues to develop for a long time, it will be very disadvantageous to the development of the national economy as a whole. Based on this, this article focuses on the in-depth research and analysis of environmental testing technology and ecological sustainable development.展开更多
For the chemical industry, the production of medium pressure vessels affects the development of the industry. Because the pressure vessel is prone to accidents if the internal pressure is too high in the production pr...For the chemical industry, the production of medium pressure vessels affects the development of the industry. Because the pressure vessel is prone to accidents if the internal pressure is too high in the production process, for a chemical enterprise, the production accident will bring the estimated loss of remedial classes. There are many reasons for accidents, most of which occur on pressure vessels. For example, the wear of pressure vessel components and improper operation of personnel will cause pressure leakage or explosion, resulting in safety accidents. Many industries need to know whether the performance of pressure vessels can meet the production standards. In this paper, various quality problems of pressure vessels on the market are analyzed and explored, hoping that some quality problems can be avoided in the production of pressure vessels, so as to reduce the occurrence of accidents and the loss of enterprises from the root. The main method discussed in this paper is to reduce the quality problems of pressure vessels with the help of nondestructive testing technology. Next, this paper introduces the distance and specific application of nondestructive testing technology in detail.展开更多
Recurrent spontaneous abortion (RSA) is a complex and heterogeneous disorder with multiple etiologies. Genetic factors are thought to play an important role in the etiology of RSA. With recent advances in genetic test...Recurrent spontaneous abortion (RSA) is a complex and heterogeneous disorder with multiple etiologies. Genetic factors are thought to play an important role in the etiology of RSA. With recent advances in genetic testing technologies, there has been an increasing interest in using these tools to diagnose the etiology of RSA. This review discusses the different types of genetic testing methods, such as karyotyping, chromosomal microarray analysis, next-generation sequencing, and their applications in the diagnosis of the etiology RSA. The use of genetic testing in the diagnosis of RSA has the potential to improve the accuracy of diagnosis and the understanding of the underlying mechanisms of the disorder, which could lead to better management and treatment of affected individuals.展开更多
With the continuous and rapid development of society, the whole society has become more diversified and the competition among products has become more intense. In the market competition, many enterprises focus on how ...With the continuous and rapid development of society, the whole society has become more diversified and the competition among products has become more intense. In the market competition, many enterprises focus on how to occupy a larger share. Too much emphasis on the improvement of production efficiency leads to the serious neglect of the quality of many products, which seriously hinders the long-term development of enterprises. In order to do a good job in product production, the existing quality supervision must be continuously optimized and improved. Measurement and testing technology is very important in the market supervision and management. Taking Chengwu as an example, this paper analyzes the application value of this technology in the market supervision and management, and clarifies the relevant matters needing attention in the application of measurement and testing technology, hoping to provide some reference and inspiration for relevant workers.展开更多
The road traffic industry in China has been developing rapidly in recent years.Asphalt has become the main material in road construction because of its seamless connection and short construction period,and it has an i...The road traffic industry in China has been developing rapidly in recent years.Asphalt has become the main material in road construction because of its seamless connection and short construction period,and it has an important impact on the overall quality of highway construction.Therefore,it is necessary to conduct scientific and reasonable tests and detections for highway asphalt pavement.This paper presents a discussion on the test and detection technology of highway asphalt pavement for future reference.展开更多
EPMA has used to measure oxygen con- tent directly in recentyears. This paper discusses the fac- tors affecting the quantitativeanalysis of oxygen content and the optimal experimental conditions,and gives some measure...EPMA has used to measure oxygen con- tent directly in recentyears. This paper discusses the fac- tors affecting the quantitativeanalysis of oxygen content and the optimal experimental conditions,and gives some measured results of oxygen content in corundums whichare collected from different geological situations.展开更多
Based on radon gas properties and its existing projects applications, we firstly attempted to apply geo- physical and chemical properties of radon gas in the field of mining engineering, and imported radioac- tive mea...Based on radon gas properties and its existing projects applications, we firstly attempted to apply geo- physical and chemical properties of radon gas in the field of mining engineering, and imported radioac- tive measurement method to detect the development process of the overlying strata mining-induced fractures and their contained water quality in underground coal mining, which not only innovates a more simple-fast-reliable detection method, but also further expands the applications of radon gas detection technology in mining field. A 3D simulation design of comprehensive testing system for detecting strata mining-induced fractures on surface with radon gas (CTSR) was carried out by using a large-scale 3D solid model design software Pro/Engineer (Pro/E), which overcame three main disadvantages of ''static design thought, 2D planar design and heavy workload for remodification design'' on exiting design for mining engineering test systems. Meanwhile, based on the simulation design results of Pro/E software, the sta- bility of the jack-screw pressure bar for the key component in CTSR was checked with a material mechan- ics theory, which provided a reliable basis for materials selection during the latter machining process.展开更多
The acceleration of urbanization has promoted the increase in the number of urban highway projects,resulting in an increase of emphasis on the quality of urban highway projects.The quality and safety of highway constr...The acceleration of urbanization has promoted the increase in the number of urban highway projects,resulting in an increase of emphasis on the quality of urban highway projects.The quality and safety of highway construction directly affects the driving comfort,safety,and service life after it is put into operation.Among them,asphalt pavement is an important structure in highway construction,and it is also a key link that directly affects the construction quality.In order to ensure the quality of construction,it is necessary to strengthen on-site testing during the construction process to discover problems in time,and to ensure that the construction is up to standard.This paper mainly presents an analysis on the necessity and application of on-site quality inspection technology for asphalt pavement construction of highway engineering,and outlines measures to improve highway engineering construction testing technology.展开更多
The relationships between the microstructure, the composition, the friction temperature and the form of a new kind of friction material which is a glass fibre resin friction materials (GFRF) are studied through a seri...The relationships between the microstructure, the composition, the friction temperature and the form of a new kind of friction material which is a glass fibre resin friction materials (GFRF) are studied through a series of tests on machine as EPMA, STM, DTG-DTA,an optical microscope and a friction test machine. The tests show that the rising rate in temperature and the heat conductivity of GFRF are lower than that of asbestos friction material. In GFRF, the heat-decline is slowed down or even eliminated. the distribution of heat- stress is improved and the life span is extended. Raising the temperature of resin resolution and enhancing the stickness between resin and glass fibre are the two important procedures to improve the friction and wear performance of GFRF.A discription about the friction and wear mechanism of GFRF is given in this paper.展开更多
The boundary scan architecture and its basic principle of board level built in test(BIT) technology are presented. A design for board level built in test and the method to implement test tool are brought forward.
Dynamic control is a new exhaust gas analysis method, which has the characteristics of grounding, control and utilization. On this basis, combined with the design principles of relevant technologies, the application e...Dynamic control is a new exhaust gas analysis method, which has the characteristics of grounding, control and utilization. On this basis, combined with the design principles of relevant technologies, the application elements of testing technology are emphatically analyzed. It has achieved the obvious technological advantages of the automobile manufacturing industry and the goal of optimizing the urban environment.展开更多
With the continuous development of China,the requirements for road construction are also increasing.Among them,strengthening the performance of roadbed test can effectively improve road construction.Besides,it is also...With the continuous development of China,the requirements for road construction are also increasing.Among them,strengthening the performance of roadbed test can effectively improve road construction.Besides,it is also crucial to perform suitable tests in a timely manner.Therefore,highway inspection technology should be improved for the continuous development of highway construction,which will be explained in this paper,in hopes of improving the construction of highway in China.展开更多
Nondestructive testing(NDT)is an advanced and commonly used technique in tunnel engineering quality inspection.To achieve good application of nondestructive testing technology,its main application in tunnel engineerin...Nondestructive testing(NDT)is an advanced and commonly used technique in tunnel engineering quality inspection.To achieve good application of nondestructive testing technology,its main application in tunnel engineering quality inspection strategy is analyzed,including the significance of applying nondestructive testing technology in tunnel engineering quality inspection,the main nondestructive testing technology applied in tunnel engineering quality test analysis,and the analysis of nondestructive testing technology of tunnel engineering quality inspection strategy.The analyses in this paper are done in hopes of providing scientific reference for the utilization of NDT technology and the improvement of tunnel engineering quality.展开更多
Asphalt pavement is currently one of the main components in the construction of roads and bridges.However,from a practical point of view,various quality problems are prone to occur in the surface layer of asphalt pave...Asphalt pavement is currently one of the main components in the construction of roads and bridges.However,from a practical point of view,various quality problems are prone to occur in the surface layer of asphalt pavement,which will lead to the poor overall quality of road and bridge projects.Therefore,it should be applied reasonably.Advanced testing technologies are used to test the mixture quality,compaction,segregation,thickness,and other aspects of the asphalt pavement surface layer,so as to improve the quality of the asphalt pavement surface layer,and then improve the overall quality of road and bridge construction.Therefore,this paper mainly analyzes the technologies for asphalt pavement surface layer testing in road and bridge engineering construction.展开更多
文摘At 23:18 Beijing time on January 5,a LM-3B carrier rocket lifted off from the Xichang Satellite Launch Center,sending a communication technology test satellite into its preset orbit.This successful launch was a good start for China’s launch missions in 2017.The Communications Technology Test Satellite 2 was developed by the Shanghai Academy of Spaceflight Technology.It is a next-generation telecom-
文摘On October 14, two satellites SJ-9A/B were sent into their preset orbits by a LM-2C/SMA launch vehicle, which is the first flight of a series of China's civilian technology experimental satellites. SJ-9A and B are the first two satellites in the series of civilian technology experimental satellites designed for tests such as long lifetime and high reliability, high precision and high performance of satellite, domestically developed core components, satellite formation
基金supported by the National Natural Science Foundation of China for Distinguished Young Scholars(Grant No.42225206)National Natural Science Foundation of China(42207180,42477209,42302320).
文摘Subgrade engineering is a fundamental aspect of infrastructure construction in China.As the primary structural element responsible for bearing and distributing traffic loads,the subgrade must not only withstand the substantial pressures exerted by vehicles,trains,and other forms of transportation,but also efficiently transfer these loads to the underlying foundation,ensuring the stability and longevity of the roadway.In recent years,advancements in subgrade engineering technology have propelled the industry towards smarter,greener,and more sustainable practices,particularly in the areas of intelligent monitoring,disaster management,and innovative construction methods.This paper reviews the application and methodologies of intelligent testing equipment,including cone penetration testing(CPT)devices,soil resistivity testers,and intelligent rebound testers,in subgrade engineering.It examines the operating principles,advantages,limitations,and application ranges of these tools in subgrade testing.Additionally,the paper evaluates the practical use of advanced equipment from both domestic and international perspectives,addressing the challenges encountered by various instruments in realworld applications.These devices enable precise,comprehensive testing and evaluation of subgrade conditions at different stages,providing real-time data analysis and intelligent early warnings.This supports effective subgrade health management and maintenance.As intelligent technologies continue to evolve and integrate,these tools will increasingly enhance the accuracy,efficiency,and sustainability of subgrade monitoring.
文摘This article takes the actual construction project of a certain concrete bridge project as an example to analyze the application of acoustic non-destructive testing technology in its detection.It includes an overview of a certain bridge construction project studied and acoustic non-destructive testing technology and the application of acoustic non-destructive testing technology in actual testing.This analysis hopes to provide some guidelines for acoustic non-destructive testing of modern concrete bridge projects.
文摘With the continuous development of today's science and technology,orthopedic research has also achieved continuous updates in materials and machinery.In this case,the mechanics testing technology of orthopedics also needs to be further updated and developed,so that it can effectively meet the requirement for today's orthopedic mechanical testing.Based on this,this article analyzes several advanced orthopedic mechanics testing techniques.It is hoped that this analysis can provide a reference for the good application and development of orthopedic mechanics testing technology.
文摘Highway test and detection technology play a very important role in controlling the quality of road and bridge engineering and improving the maintenance of roads and bridges.The study of highway bridge test detection technology is both theoretically and practically useful.Road and bridge test and detection is a complicated task.With the development of science and technology,highway and bridge engineering test and detection technology has also made great progress.The continuous improvement of test and detection technology has brought good social benefits to road and bridge construction.This article discusses the problems in test and detection technology of highway bridges and how to improve the quality of test and detection.
文摘At present, the problem of environmental loss is becoming more and more serious. In order to realize the sustainable development of the environment, it is necessary to increase the research of environmental monitoring technology. If the environment is polluted, it will bring a series of chain reactions. If the specific pollution problem cannot be effectively controlled in a timely manner, it will seriously damage the entire ecosystem. At the same time, it will be irreversible. The environment on which people depend for their survival will also be adversely affected. If it continues to develop for a long time, it will be very disadvantageous to the development of the national economy as a whole. Based on this, this article focuses on the in-depth research and analysis of environmental testing technology and ecological sustainable development.
文摘For the chemical industry, the production of medium pressure vessels affects the development of the industry. Because the pressure vessel is prone to accidents if the internal pressure is too high in the production process, for a chemical enterprise, the production accident will bring the estimated loss of remedial classes. There are many reasons for accidents, most of which occur on pressure vessels. For example, the wear of pressure vessel components and improper operation of personnel will cause pressure leakage or explosion, resulting in safety accidents. Many industries need to know whether the performance of pressure vessels can meet the production standards. In this paper, various quality problems of pressure vessels on the market are analyzed and explored, hoping that some quality problems can be avoided in the production of pressure vessels, so as to reduce the occurrence of accidents and the loss of enterprises from the root. The main method discussed in this paper is to reduce the quality problems of pressure vessels with the help of nondestructive testing technology. Next, this paper introduces the distance and specific application of nondestructive testing technology in detail.
文摘Recurrent spontaneous abortion (RSA) is a complex and heterogeneous disorder with multiple etiologies. Genetic factors are thought to play an important role in the etiology of RSA. With recent advances in genetic testing technologies, there has been an increasing interest in using these tools to diagnose the etiology of RSA. This review discusses the different types of genetic testing methods, such as karyotyping, chromosomal microarray analysis, next-generation sequencing, and their applications in the diagnosis of the etiology RSA. The use of genetic testing in the diagnosis of RSA has the potential to improve the accuracy of diagnosis and the understanding of the underlying mechanisms of the disorder, which could lead to better management and treatment of affected individuals.
文摘With the continuous and rapid development of society, the whole society has become more diversified and the competition among products has become more intense. In the market competition, many enterprises focus on how to occupy a larger share. Too much emphasis on the improvement of production efficiency leads to the serious neglect of the quality of many products, which seriously hinders the long-term development of enterprises. In order to do a good job in product production, the existing quality supervision must be continuously optimized and improved. Measurement and testing technology is very important in the market supervision and management. Taking Chengwu as an example, this paper analyzes the application value of this technology in the market supervision and management, and clarifies the relevant matters needing attention in the application of measurement and testing technology, hoping to provide some reference and inspiration for relevant workers.
文摘The road traffic industry in China has been developing rapidly in recent years.Asphalt has become the main material in road construction because of its seamless connection and short construction period,and it has an important impact on the overall quality of highway construction.Therefore,it is necessary to conduct scientific and reasonable tests and detections for highway asphalt pavement.This paper presents a discussion on the test and detection technology of highway asphalt pavement for future reference.
文摘EPMA has used to measure oxygen con- tent directly in recentyears. This paper discusses the fac- tors affecting the quantitativeanalysis of oxygen content and the optimal experimental conditions,and gives some measured results of oxygen content in corundums whichare collected from different geological situations.
基金support for this work provided by the Fundamental Research Funds for the Central Universities(China University of Mining & Technology) (No. 2010ZDP02B02)the State Key Laboratory of Coal Resources and Safe Mining(No. SKLCRSM08X02)
文摘Based on radon gas properties and its existing projects applications, we firstly attempted to apply geo- physical and chemical properties of radon gas in the field of mining engineering, and imported radioac- tive measurement method to detect the development process of the overlying strata mining-induced fractures and their contained water quality in underground coal mining, which not only innovates a more simple-fast-reliable detection method, but also further expands the applications of radon gas detection technology in mining field. A 3D simulation design of comprehensive testing system for detecting strata mining-induced fractures on surface with radon gas (CTSR) was carried out by using a large-scale 3D solid model design software Pro/Engineer (Pro/E), which overcame three main disadvantages of ''static design thought, 2D planar design and heavy workload for remodification design'' on exiting design for mining engineering test systems. Meanwhile, based on the simulation design results of Pro/E software, the sta- bility of the jack-screw pressure bar for the key component in CTSR was checked with a material mechan- ics theory, which provided a reliable basis for materials selection during the latter machining process.
文摘The acceleration of urbanization has promoted the increase in the number of urban highway projects,resulting in an increase of emphasis on the quality of urban highway projects.The quality and safety of highway construction directly affects the driving comfort,safety,and service life after it is put into operation.Among them,asphalt pavement is an important structure in highway construction,and it is also a key link that directly affects the construction quality.In order to ensure the quality of construction,it is necessary to strengthen on-site testing during the construction process to discover problems in time,and to ensure that the construction is up to standard.This paper mainly presents an analysis on the necessity and application of on-site quality inspection technology for asphalt pavement construction of highway engineering,and outlines measures to improve highway engineering construction testing technology.
文摘The relationships between the microstructure, the composition, the friction temperature and the form of a new kind of friction material which is a glass fibre resin friction materials (GFRF) are studied through a series of tests on machine as EPMA, STM, DTG-DTA,an optical microscope and a friction test machine. The tests show that the rising rate in temperature and the heat conductivity of GFRF are lower than that of asbestos friction material. In GFRF, the heat-decline is slowed down or even eliminated. the distribution of heat- stress is improved and the life span is extended. Raising the temperature of resin resolution and enhancing the stickness between resin and glass fibre are the two important procedures to improve the friction and wear performance of GFRF.A discription about the friction and wear mechanism of GFRF is given in this paper.
文摘The boundary scan architecture and its basic principle of board level built in test(BIT) technology are presented. A design for board level built in test and the method to implement test tool are brought forward.
文摘Dynamic control is a new exhaust gas analysis method, which has the characteristics of grounding, control and utilization. On this basis, combined with the design principles of relevant technologies, the application elements of testing technology are emphatically analyzed. It has achieved the obvious technological advantages of the automobile manufacturing industry and the goal of optimizing the urban environment.
文摘With the continuous development of China,the requirements for road construction are also increasing.Among them,strengthening the performance of roadbed test can effectively improve road construction.Besides,it is also crucial to perform suitable tests in a timely manner.Therefore,highway inspection technology should be improved for the continuous development of highway construction,which will be explained in this paper,in hopes of improving the construction of highway in China.
文摘Nondestructive testing(NDT)is an advanced and commonly used technique in tunnel engineering quality inspection.To achieve good application of nondestructive testing technology,its main application in tunnel engineering quality inspection strategy is analyzed,including the significance of applying nondestructive testing technology in tunnel engineering quality inspection,the main nondestructive testing technology applied in tunnel engineering quality test analysis,and the analysis of nondestructive testing technology of tunnel engineering quality inspection strategy.The analyses in this paper are done in hopes of providing scientific reference for the utilization of NDT technology and the improvement of tunnel engineering quality.
文摘Asphalt pavement is currently one of the main components in the construction of roads and bridges.However,from a practical point of view,various quality problems are prone to occur in the surface layer of asphalt pavement,which will lead to the poor overall quality of road and bridge projects.Therefore,it should be applied reasonably.Advanced testing technologies are used to test the mixture quality,compaction,segregation,thickness,and other aspects of the asphalt pavement surface layer,so as to improve the quality of the asphalt pavement surface layer,and then improve the overall quality of road and bridge construction.Therefore,this paper mainly analyzes the technologies for asphalt pavement surface layer testing in road and bridge engineering construction.
