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Imposing Active Sources during High-Frequency Passive Surface-Wave Measurement Article

Feng Cheng,Jianghai Xia,Chao Shen,Yue Hu,Zongbo Xu,Binbin Mi

Engineering 2018, Volume 4, Issue 5,   Pages 685-693 doi: 10.1016/j.eng.2018.08.003

Abstract: In general, passive surface-wave methods cannot provide phase velocities up to several tens of hertz;” Short-duration (within 10 min) passive surface waves and mixed-source surface waves were recordedcontinuous passive surface-wave observation.The spatial autocorrelation (SPAC) method and the multichannel analysis of passive surface waves (MAPSmeasurement or passive surface-wave measurement.

Keywords： Passive surface wave     Active surface wave     High frequency     Mixed-source surface wave     Spatial autocorrelation     Multichannel analysis of passive surface waves    

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Diporphyrin tweezer for multichannel spectroscopic analysis of enantiomeric excess

Daniel T. Payne, Mandeep K. Chahal, Václav Březina, Whitney A. Webre, Katsuhiko Ariga, Francis D’Souza, Jan Labuta, Jonathan P. Hill

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 1,   Pages 28-40 doi: 10.1007/s11705-019-1869-1

Abstract: The host molecules could be used as multichannel probes of by using UV-vis, circular dichroism (CD)This work demonstrates the utility of 1,1’-binapthyl-linked chiral hosts for chiral analysis of ditopically

Keywords： porphyrin dimer     chirality     enantiomeric excess     CD     fluorescence    

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Soil seismic analysis for 2D oblique incident waves using exact free-field responses by frequency-based

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1530-1551 doi: 10.1007/s11709-022-0900-7

Abstract: The seismic analysis of a viscoelastic half-space under two-dimensional (2D) oblique incident waves isdisplacements and stresses of the free field are derived in general form for arbitrary incident P and SV wavesWith the present formulation, no distinction needs to be made for SV waves with over-critical incidentangles that make the reflected P waves disappear, while no critical angle exists for P waves.on the asymmetric finite/infinite element model, the frequency-domain motion equations for seismic analysis

Keywords： oblique incident waves     critical angle     half-space     finite/infinite element approach     seismic responseanalysis    

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Numerical modeling and performance evaluation of passive convergence-permeable reactive barrier (PC-PRB

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1731-z

Abstract:

● A 2D finite-element solute transport model, PRB-Trans, is developed.

Keywords： Passive convergence-permeable reactive barrier     Numerical modeling     Hydraulic behavior assessment     Pollutanttreatment performance evaluation     Influential factors analysis    

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Passive convergence-permeable reactive barrier (PC-PRB): An effective configuration to enhance hydraulic

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1591-y

Abstract:

● A novel PRB configuration based on passive convergent flow effect

Keywords： Passive convergence-permeable reactive barrier (PC-PRB)     Permeable reactive barrier configuration     Numericalsimulation     Hydraulic performance evaluation     Sensitivity analysis    

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Monitoring & Analysis of Earthquake phenomena by Artificial SLF Waves

Zhao Guoze,Lu Jianxun

Strategic Study of CAE 2003, Volume 5, Issue 10,   Pages 27-33

Abstract:

Electromagnetic waves in SLF (super low frequency) frequency band can be transmitted by powered generatorThe artificial signals can be measured in a quite large area on earth surface for investigation of the

Keywords： SLF/ELF electromagnetic waves     electromagnetic anomaly     resistivity     earthquake monitoring    

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V-shaped substrate for surface and volume enhanced Raman spectroscopic analysis of microplastics

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1578-8

Abstract:

● V-shaped substrate was obtained for SERS analysis of microplastics

Keywords： SERS     V-shaped     AAO     Microplastic     Atmospheric aerosol    

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Response surface regression analysis on FeCrBSi particle in-flight properties by plasma spray

Runbo MA,Lihong DONG,Haidou WANG,Shuying CHEN,Zhiguo XING

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 3,   Pages 250-257 doi: 10.1007/s11465-016-0401-2

Abstract: Results of the response surface methodology show that the interactive effects between voltage and sprayFor a given argon flow rate, particle velocity and temperature response surface are obviously bending

Keywords： particle velocity     particle temperature     interactive effects     response surface    

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A numerical framework for underground structures in layered ground under inclined P-SV waves using stiffness

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 10-24 doi: 10.1007/s11709-022-0904-3

Abstract: A numerical framework was proposed for the seismic analysis of underground structures in layered groundunder inclined P-SV waves.in previous studies, the proposed framework exhibits the advantage of incorporating oblique incident wavesNumerical results show that SV-waves are more destructive to underground structures than P-waves, and

Keywords： underground structures     seismic response     stiffness matrix method     domain reduction method     P-SV waves    

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Mechanistic insight into the biofilm formation and process performance of a passive aeration ditch (PAD

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 7, doi: 10.1007/s11783-021-1494-3

Abstract:

• A Passive Aeration Ditch was developed to treat decentralized wastewater

Keywords： Decentralized wastewater     Passive aeration ditch     Biofilm formation     C/N ratio     Salinity     Model simulation    

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Probability strength design of steam turbine blade and sensitivity analysis with respect to random parametersbased on response surface method

DUAN Wei

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 107-115 doi: 10.1007/s11708-008-0018-1

Abstract: Analysis file of the blade is compiled by deterministic finite element method and applied to be loopProbability sensitivity analysis, which combines the slope of the gradient and the width of the scatterThe results show that combination of the finite element method, the response surface method and MonteCarlo method is an ideal way for the reliability analysis and probability strength design of the blade

Keywords： Probability sensitivity     sensitivity analysis     number     cross-section     statistical    

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Parametric control of structural responses using an optimal passive tuned mass damper under stationary

Min-Ho CHEY, Jae-Ung KIM

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 267-280 doi: 10.1007/s11709-012-0170-x

Abstract: In this study, the structural control strategy utilizing a passive tuned mass damper (TMD) system as

Keywords： tuned mass damper     parametric optimization     passive control     white noise     earthquake excitation    

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Global sensitivity analysis of certain and uncertain factors for a circular tunnel under seismic action

Nazim Abdul NARIMAN, Raja Rizwan HUSSAIN, Ilham Ibrahim MOHAMMAD, Peyman KARAMPOUR

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1289-1300 doi: 10.1007/s11709-019-0548-0

Abstract: effects between the design factors have been determined supporting on variance-based global sensitivity analysis

Keywords： shear waves     Sobol’s sensitivity indices     maximum principal stress     maximum overall displacement     tensile    

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Power maximization of variable-speed variable-pitch wind turbines using passive adaptive neural fault

Hamed HABIBI, Hamed RAHIMI NOHOOJI, Ian HOWARD

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 377-388 doi: 10.1007/s11465-017-0431-4

Abstract:

Power maximization has always been a practical consideration in wind turbines. The question of how to address optimal power capture, especially when the system dynamics are nonlinear and the actuators are subject to unknown faults, is significant. This paper studies the control methodology for variable-speed variable-pitch wind turbines including the effects of uncertain nonlinear dynamics, system fault uncertainties, and unknown external disturbances. The nonlinear model of the wind turbine is presented, and the problem of maximizing extracted energy is formulated by designing the optimal desired states. With the known system, a model-based nonlinear controller is designed; then, to handle uncertainties, the unknown nonlinearities of the wind turbine are estimated by utilizing radial basis function neural networks. The adaptive neural fault tolerant control is designed passively to be robust on model uncertainties, disturbances including wind speed and model noises, and completely unknown actuator faults including generator torque and pitch actuator torque. The Lyapunov direct method is employed to prove that the closed-loop system is uniformly bounded. Simulation studies are performed to verify the effectiveness of the proposed method.

Keywords： wind turbine nonlinear model     maximum power tracking     passive fault tolerant control     adaptive neural control    

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Analysis of stress and failure in rock specimens with closed and open flaws on the surface

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1222-1237 doi: 10.1007/s11709-021-0773-1

Abstract: The influence of closed and open surface flaws on the stress distribution and failure in rock specimensThe simulated specimens include those with closed flaws and those with open flaws on the surface.According to the results, when compression is the dominant mode of stress applied to the flaw surfaceThe presented results in this article suggest that failure at the rock surface may be managed in a favorablemanner by fabricating open flaws on the rock surface.

Keywords： surface flaw     heterogeneity     circular hole     numerical modeling     relative displacement    

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Title Author Date Type Operation

Imposing Active Sources during High-Frequency Passive Surface-Wave Measurement

Feng Cheng,Jianghai Xia,Chao Shen,Yue Hu,Zongbo Xu,Binbin Mi

Journal Article

Diporphyrin tweezer for multichannel spectroscopic analysis of enantiomeric excess

Daniel T. Payne, Mandeep K. Chahal, Václav Březina, Whitney A. Webre, Katsuhiko Ariga, Francis D’Souza, Jan Labuta, Jonathan P. Hill

Journal Article

Soil seismic analysis for 2D oblique incident waves using exact free-field responses by frequency-based

Journal Article

Numerical modeling and performance evaluation of passive convergence-permeable reactive barrier (PC-PRB

Journal Article

Passive convergence-permeable reactive barrier (PC-PRB): An effective configuration to enhance hydraulic

Journal Article

Monitoring & Analysis of Earthquake phenomena by Artificial SLF Waves

Zhao Guoze,Lu Jianxun

Journal Article

V-shaped substrate for surface and volume enhanced Raman spectroscopic analysis of microplastics

Journal Article

Response surface regression analysis on FeCrBSi particle in-flight properties by plasma spray

Runbo MA,Lihong DONG,Haidou WANG,Shuying CHEN,Zhiguo XING

Journal Article

A numerical framework for underground structures in layered ground under inclined P-SV waves using stiffness

Journal Article

Mechanistic insight into the biofilm formation and process performance of a passive aeration ditch (PAD

Journal Article

Probability strength design of steam turbine blade and sensitivity analysis with respect to random parametersbased on response surface method

DUAN Wei

Journal Article

Parametric control of structural responses using an optimal passive tuned mass damper under stationary

Min-Ho CHEY, Jae-Ung KIM

Journal Article

Global sensitivity analysis of certain and uncertain factors for a circular tunnel under seismic action

Nazim Abdul NARIMAN, Raja Rizwan HUSSAIN, Ilham Ibrahim MOHAMMAD, Peyman KARAMPOUR

Journal Article

Power maximization of variable-speed variable-pitch wind turbines using passive adaptive neural fault

Hamed HABIBI, Hamed RAHIMI NOHOOJI, Ian HOWARD

Journal Article

Analysis of stress and failure in rock specimens with closed and open flaws on the surface

Journal Article