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The theory and practice for observing design layout of Southwest China vortex atmospheric scientificexperiment

Li Yueqing,Xu Xiangde,Zhao Xingbing

Strategic Study of CAE 2012, Volume 14, Issue 9,   Pages 35-45

Abstract: Based on the situation of scientific research and field experiment on Southwest China vortex, this paperexperiment for the basic data, scientific research and operational forecasting of Southwest China vortexexperiment is systematically designed.experiment, which made progress on the research and operation of Southwest China vortex.Finally, from the needs, present and effect of Southwest China vortex atmospheric scientific experiment

Keywords： Southwest China vortex     scientific experiment     observational basis     design-layout technology    

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Search for a natural scientific measure of economy

John E COULTER

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 111-118 doi: 10.1007/s11783-011-0285-7

Abstract: Through human history, wealth has been measured in grain, gold, and, now, dollars. Though counterfeiting of coins and notes goes back a long way, it is only with electronic financial accounting in a global economy tainted by toxic loans and imaginary funds that there is an urgency to search for a realistic objective way to monitor and regulate what we are doing to our Earth and ourselves. Various schemes using analysis of utility functions, oil equivalents, entropy, energy, and other units have been tried and, while helping to understand some basic processes and flows, have always been swamped by the machinations of financiers and the attention big sums of money attract. Now, the concept of exergy, pioneered in Eastern Europe in the 1950s, is being researched, developed, and applied, especially in China, driven by the desperation to measure the reality beyond the twin specters of global financial and environmental crises. A rough inventory of the matter in the biosphere at the coordinate details of an angstrom and an appreciation of how humans harness and manipulate electromagnetic forces can be enlightening as to what is and is not sustainable. Without that understanding, any financial estimate and proposed stimulus packages or IMF reform will be wildly wrong and may even be headed in the wrong direction.

Keywords： climate change     financial crisis     energy     exergy     environment    

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Design and experiment of a novel pneumatic soft arm based on a deployable origami exoskeleton

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0770-2

Abstract: Soft arms have shown great application potential because of their flexibility and compliance in unstructured environments. However, soft arms made from soft materials exhibit limited cargo-loading capacity, which restricts their ability to manipulate objects. In this research, a novel soft arm was developed by coupling a rigid origami exoskeleton with soft airbags. The joint module of the soft arm was composed of a deployable origami exoskeleton and three soft airbags. The motion and load performance of the soft arm of the eight-joint module was tested. The developed soft arm withstood at least 5 kg of load during extension, contraction, and bending motions; exhibited bistable characteristics in both fully contracted and fully extended states; and achieved a bending angle of more than 240° and a contraction ratio of more than 300%. In addition, the high extension, contraction, bending, and torsional stiffnesses of the soft arm were experimentally demonstrated. A kinematic-based trajectory planning of the soft arm was performed to evaluate its error in repetitive motion. This work will provide new design ideas and methods for flexible manipulation applications of soft arms.

Keywords： pneumatic soft arm     soft airbag     deployable origami exoskeleton     bistable characteristics     cargo-loading capacity    

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Atmospheric heterogeneous reaction of chlorobenzene on mineral -FeO particulates: a chamber experiment

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1734-9

Abstract:

● Photochemical conversion of chlorobenzene (CB) on α-Fe2O3 was evaluated.

Keywords： Photochemical conversion     Chlorobenzene     α-Fe2O3     PCDD/Fs     Mineral particulate    

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Biaxial tensile-compressive experiment of concrete at high temperatures

SONG Yupu, ZHANG Zhong, QING Likun, YU Changjiang

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 94-98 doi: 10.1007/s11709-007-0009-z

Abstract: Biaxial tension-compression experiments of concrete of five stress ratios at high temperatures were carried out using the large static-dynamic triaxial test system in the State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology. The stress ratios s1/s3 are 0, 0.1, 0.25, 0.50, and 0.75. The temperatures are 20vH, 200vH, 300vH, 500vH, 600vH. The mechanical behavior of concrete under biaxial tension-compression at high temperatures is analyzed. It is found that both the tensile strength and strain diminished with the increase in temperature under each stress ratio. Based on the test results, the relationship between tensile strengths and stress ratios and temperature is proposed. In addition, the failure criterion of concrete under biaxial stress state of tension-compression at high temperatures is established.

Keywords： increase     Offshore Engineering     temperature     relationship     addition    

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Methodological challenges to human medical study

Yixin Zhong,Baoyan Liu,Hua Qu,Qi Xie

Frontiers of Medicine 2014, Volume 8, Issue 3,   Pages 328-336 doi: 10.1007/s11684-014-0359-6

Abstract:

With the transformation of modern medicinal pattern, medical studies are confronted with methodological challenges. By analyzing two methodologies existing in the study of physical matter system and information system, the article points out that traditional Chinese medicine (TCM), especially the treatment based on syndrome differentiation, embodies information conception of methodological positions, while western medicine represents matter conception of methodological positions. It proposes a new way of thinking about combination of TCM and western medicine by combinating two kinds of methodological methods.

Keywords： medical paradigm     traditional Chinese medicine     western medicine     scientific view     scientific methodology    

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Numerical simulation and experiment research of radiation performance in a dish solar collector system

Yong SHUAI, Xinlin XIA, Heping TAN

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 488-495 doi: 10.1007/s11708-010-0007-z

Abstract: The Monte Carlo ray-tracing method is applied and coupled with optical properties to predict the radiation performance of solar concentrator/cavity receiver systems. Several different cavity geometries are compared on the radiation performance. A flux density distribution measurement system for dish parabolic concentrators is developed. The contours of the flux distribution for target placements at different distances from the dish vertex of a solar concentrator are taken by using an indirect method with a Lambert and a charge coupled device (CCD) camera. Further, the measured flux distributions are compared with a Monte Carlo-predicted distribution. The results can be a valuable reference for the design and assemblage of the solar collector system.

Keywords： Monte Carlo method     solar energy     radiation performance     cavity receiver    

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Centrifuge experiment and numerical analysis of an air-backed plate subjected to underwater shock loading

Zhijie HUANG, Xiaodan REN, Zuyu CHEN, Daosheng LING

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1350-1362 doi: 10.1007/s11709-019-0559-x

Abstract: In this study, systematic centrifuge experiments and numerical studies are conducted to investigate the effect of shock loads due to an underwater explosion on the dynamic responses of an air-backed steel plate. Numerical simulations with three different models of pressure time history generated by underwater explosion were carried out. The first model of pressure time history was measured in test. The second model to predict the time history of shock wave pressure from an underwater explosion was created by Cole in 1948. Coefficients of Cole’s formulas are determined experimentally. The third model was developed by Zamyshlyaev and Yakovlev in 1973. All of them are implemented into the numerical model to calculate the shock responses of the plate. Simulated peak strains obtained from the three models are compared with the experimental results, yielding average relative differences of 21.39%, 45.73%, and 13.92%, respectively. The Russell error technique is used to quantitatively analyze the correlation between the numerical and experimental results. Quantitative analysis shows that the simulated strains for most measurement points on the steel plate are acceptable. By changing the scaled distances, different shock impulses were obtained and exerted on the steel plate. Systematic numerical studies are performed to investigate the effect of the accumulated shock impulse on the peak strains. The numerical and experimental results suggest that the peak strains are strongly dependent on the accumulated shock impulse.

Keywords： underwater explosion     centrifuge experiment     shock load     dynamic response     accumulated shock impulse    

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Innovating engineering technology supporting scientific development

Du Xiangwan

Strategic Study of CAE 2009, Volume 11, Issue 4,   Pages 4-8

Abstract:

This paper reviewed the important scientific progress and engineering

Keywords： technology     engineering     innovation     scientific development    

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Some Considerations on Engineering Philosophy

Du Xiangwan

Strategic Study of CAE 2005, Volume 7, Issue 2,   Pages 24-25

Abstract:

The paper points out the background of the emergence of engineering philosophy, and describes the connotation of engineering philosophy and the significance for conducting the study on engineering philosophy.

Keywords： engineering philosophy     out-look on scientific development     engineering scientific technology    

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Parameter for judging reactivity of coal and coke

HE Hongzhou, LUO Zhongyang, CEN Kefa

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 354-358 doi: 10.1007/s11708-008-0052-z

Abstract: as the quotient of the maximum weight loss rate in non-isothermal thermogravimetric analysis (TGA) experimentThe heating rate selected in TGA experiment has no effect on the judgment.

Keywords： thermogravimetric analysis     specific maximum     different lithotype     experiment     TGA experiment    

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Scientific inspirations of emergency rescue in the Wenchuan Earthquake

Xu Deshi

Strategic Study of CAE 2009, Volume 11, Issue 6,   Pages 100-106

Abstract: emergency pre -plan has been broken through,professional emergency rescue plays a role,and the public scientific

Keywords： Wenchuan Earthquake     earthquake emergency rescue     scientific revelation    

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Scientific Management of China's Space Activities

Wang Liheng

Strategic Study of CAE 2006, Volume 8, Issue 11,   Pages 1-6

Abstract: China´s space activities in the past 50 years and the principle, structure and method of its scientificmanifestation of system engineering of China ´ s space activities, and also are the important feature of scientific

Keywords： China's space activities     system engineering     scientific management    

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Scientific and technological progress and innovation of Three Gorge Project

Sun Chaoran,Sun Zhiyu

Strategic Study of CAE 2011, Volume 13, Issue 7,   Pages 33-37

Abstract: experts and scholars of various fields and a series of innovative achievements are gained, which make the scientific

Keywords： Three Gorges Project     scientific and technological innovation     ecological environment protection    

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How did Archimedes discover the law of buoyancy by experiment?

Hidetaka KUROKI

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1,   Pages 26-32 doi: 10.1007/s11465-016-0368-z

Abstract: Through these measurements, he reached the discovery of the law of buoyancy directly by experiment.

Keywords： Archimedes’ principle     buoyancy     specific gravity     Eureka     Vitruvius     displaced water     balance     floating body    

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Title Author Date Type Operation

The theory and practice for observing design layout of Southwest China vortex atmospheric scientificexperiment

Li Yueqing,Xu Xiangde,Zhao Xingbing

Journal Article

Search for a natural scientific measure of economy

John E COULTER

Journal Article

Design and experiment of a novel pneumatic soft arm based on a deployable origami exoskeleton

Journal Article

Atmospheric heterogeneous reaction of chlorobenzene on mineral -FeO particulates: a chamber experiment

Journal Article

Biaxial tensile-compressive experiment of concrete at high temperatures

SONG Yupu, ZHANG Zhong, QING Likun, YU Changjiang

Journal Article

Methodological challenges to human medical study

Yixin Zhong,Baoyan Liu,Hua Qu,Qi Xie

Journal Article

Numerical simulation and experiment research of radiation performance in a dish solar collector system

Yong SHUAI, Xinlin XIA, Heping TAN

Journal Article

Centrifuge experiment and numerical analysis of an air-backed plate subjected to underwater shock loading

Zhijie HUANG, Xiaodan REN, Zuyu CHEN, Daosheng LING

Journal Article

Innovating engineering technology supporting scientific development

Du Xiangwan

Journal Article

Some Considerations on Engineering Philosophy

Du Xiangwan

Journal Article

Parameter for judging reactivity of coal and coke

HE Hongzhou, LUO Zhongyang, CEN Kefa

Journal Article

Scientific inspirations of emergency rescue in the Wenchuan Earthquake

Xu Deshi

Journal Article

Scientific Management of China's Space Activities

Wang Liheng

Journal Article

Scientific and technological progress and innovation of Three Gorge Project

Sun Chaoran,Sun Zhiyu

Journal Article

How did Archimedes discover the law of buoyancy by experiment?

Hidetaka KUROKI

Journal Article