In the early 18th century,to meet Europe's urgent demand for Jingdezhen's ceramic production techniques,French Jesuit missionary François Xavier d'Entrecolles traveled to Jingdezhen,Jiangxi.While cond...In the early 18th century,to meet Europe's urgent demand for Jingdezhen's ceramic production techniques,French Jesuit missionary François Xavier d'Entrecolles traveled to Jingdezhen,Jiangxi.While conducting missionary work,he thoroughly investigated local porcelain-making techniques.He compiled his findings into two lengthy letters and sent samples of porcelain raw materials to Europe,successfully disseminating Jingdezhen's ceramic artistry to the continent.D'Entrecolles skillfully integrated the protective function of his religious identity,the resource coordination capabilities of political networks,the documentation methods of empirical science,and a localized infiltration strategy,constructing a four-dimensional investigative framework of"missionary integration-observation and interviews-literature review-experimental verification"through Broussonetia papyrifera.These systematic research methods enabled him to comprehensively master Jingdezhen's porcelain technology at the time,establishing him as the pioneer of Western systematic studies on Chinese ceramics and creating a new paradigm of"field research+scientific empiricism"in early cross-cultural technological transmission.展开更多
On the hasis of the reason that the offshore oil development areas in the northern South China Sea are at greater depth,more hazardous conditions and distance from shore, the methods and technologies used in coastal w...On the hasis of the reason that the offshore oil development areas in the northern South China Sea are at greater depth,more hazardous conditions and distance from shore, the methods and technologies used in coastal waters are notfeasible because of the higher risk of losing investigation equipment or facilities. A series of methods and technologiesfor offshore fouling investigation that have been successfully applied is given in detail and it is hoped that theexperience can be helpful for further studies.展开更多
The steady, laminar, incompressible and two dimensional micropolar flow between two porous disks was investigated using optimal homotopy asymptotic method(OHAM) and fourth order Runge–Kutta numerical method. Comparis...The steady, laminar, incompressible and two dimensional micropolar flow between two porous disks was investigated using optimal homotopy asymptotic method(OHAM) and fourth order Runge–Kutta numerical method. Comparison between OHAM and numerical method shows that OHAM is an exact and high efficient method for solving these kinds of problems. The results are presented to study the velocity and rotation profiles for different physical parameters such as Reynolds number, vortex viscosity parameter, spin gradient viscosity and microinertia density parameter. As an important outcome, the magnitude of the microrotation increases with an increase in the values of injection velocity while it decreases by increasing the values of suction velocity.展开更多
A new method is described to measure the dynamic shear modulus of underwater acoustic structure materials in a small anechoic water tank by using a broadband parametric source, a precise coordinate installation and te...A new method is described to measure the dynamic shear modulus of underwater acoustic structure materials in a small anechoic water tank by using a broadband parametric source, a precise coordinate installation and techniques of signal processing in the frequency range of 20 kHz - 100 kHz. The typical size of material samples is 500×500 mm2. Basic principles, experiment installation and measured results are also presented展开更多
文摘In the early 18th century,to meet Europe's urgent demand for Jingdezhen's ceramic production techniques,French Jesuit missionary François Xavier d'Entrecolles traveled to Jingdezhen,Jiangxi.While conducting missionary work,he thoroughly investigated local porcelain-making techniques.He compiled his findings into two lengthy letters and sent samples of porcelain raw materials to Europe,successfully disseminating Jingdezhen's ceramic artistry to the continent.D'Entrecolles skillfully integrated the protective function of his religious identity,the resource coordination capabilities of political networks,the documentation methods of empirical science,and a localized infiltration strategy,constructing a four-dimensional investigative framework of"missionary integration-observation and interviews-literature review-experimental verification"through Broussonetia papyrifera.These systematic research methods enabled him to comprehensively master Jingdezhen's porcelain technology at the time,establishing him as the pioneer of Western systematic studies on Chinese ceramics and creating a new paradigm of"field research+scientific empiricism"in early cross-cultural technological transmission.
文摘On the hasis of the reason that the offshore oil development areas in the northern South China Sea are at greater depth,more hazardous conditions and distance from shore, the methods and technologies used in coastal waters are notfeasible because of the higher risk of losing investigation equipment or facilities. A series of methods and technologiesfor offshore fouling investigation that have been successfully applied is given in detail and it is hoped that theexperience can be helpful for further studies.
文摘The steady, laminar, incompressible and two dimensional micropolar flow between two porous disks was investigated using optimal homotopy asymptotic method(OHAM) and fourth order Runge–Kutta numerical method. Comparison between OHAM and numerical method shows that OHAM is an exact and high efficient method for solving these kinds of problems. The results are presented to study the velocity and rotation profiles for different physical parameters such as Reynolds number, vortex viscosity parameter, spin gradient viscosity and microinertia density parameter. As an important outcome, the magnitude of the microrotation increases with an increase in the values of injection velocity while it decreases by increasing the values of suction velocity.
文摘A new method is described to measure the dynamic shear modulus of underwater acoustic structure materials in a small anechoic water tank by using a broadband parametric source, a precise coordinate installation and techniques of signal processing in the frequency range of 20 kHz - 100 kHz. The typical size of material samples is 500×500 mm2. Basic principles, experiment installation and measured results are also presented
