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The implications of planting mode on cadmium uptake and remobilization in rice: Field experiments across

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1431-5

Abstract:

•Direct seeding (DS) method led to more distributed Cd in aerial parts of rice.

Keywords： Cadmium     Genotypes     Growth stages     Micro X-ray fluorescence     Planting mode    

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Sensitivity analysis and numerical experiments on transient test of compact heat exchanger surfaces

REN Hesheng, LAI Lingjun, CUI Yongzheng

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 374-380 doi: 10.1007/s11708-008-0079-1

Abstract: Both sensitivity analysis and numerical experiments with simulated measurements containing random errors

Keywords： coefficient     dimensionless longitudinal     longitudinal     temperature     conduction    

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Hydrologic experiments and modeling of two laboratory bioretention systems under different boundary conditions

Ruifen Liu, Elizabeth Fassman-Beck

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0951-5

Abstract: The laboratory experiments involved two different engineered media and two different drainage configurations

Keywords： Bioretention     Hydrologic process     Underdrain configuration     SWMM     Modeling    

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A metadata model for collaborative experiments and simulations in earthquake engineering

Jean-Pierre BARDET, Nazila MOKARRAM, Fang LIU

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2,   Pages 133-153 doi: 10.1007/s11709-010-0036-z

Abstract: Research projects in earthquake engineering yield a very large amount of complex data from experimentsbased on a series of former data models, which were unduly complicated and limited to few types of experimentsSimpler than its predecessors, the present metadata model applies to all kinds of earthquake engineering experimentsIts applications are illustrated with examples from centrifuge experiments.

Keywords： metadata     data     documentation     experiment     simulation    

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Centrifuge experiments for shallow tunnels at active reverse fault intersection

Mehdi SABAGH, Abbas GHALANDARZADEH

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 731-745 doi: 10.1007/s11709-020-0614-7

Abstract: Tunnels extend in large stretches with continuous lengths of up to hundreds of kilometers which are vulnerable to faulting in earthquake-prone areas. Assessing the interaction of soil and tunnel at an intersection with an active fault during an earthquake can be a beneficial guideline for tunnel design engineers. Here, a series of 4 centrifuge tests are planned and tested on continuous tunnels. Dip-slip surface faulting in reverse mechanism of 60-degree is modeled by a fault simulator box in a quasi-static manner. Failure mechanism, progression and locations of damages to the tunnels are assessed through a gradual increase in Permanent Ground Displacement (PGD). The ground surface deformations and strains, fault surface trace, fault scarp and the sinkhole caused by fault movement are observed here. These ground surface deformations are major threats to stability, safety and serviceability of the structures. According to the observations, the modeled tunnels are vulnerable to reverse fault rupture and but the functionality loss is not abrupt, and the tunnel will be able to tolerate some fault displacements. By monitoring the progress of damage states by increasing PGD, the fragility curves corresponding to each damage state were plotted and interpreted in related figures.

Keywords： reverse fault rupture     continuous tunnel     geotechnical centrifuge     ground surface deformations     fragility curves    

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THE ROLE OF LONG-TERM EXPERIMENTS IN VALIDATING TRAIT-BASED APPROACHES TO ACHIEVING MULTIFUNCTIONALITY

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 2,   Pages 187-196 doi: 10.15302/J-FASE-2021438

Abstract: This study demonstrated the value of focused studies of long-term experiments in grassland systems that

Keywords： multifunctional grassland systems / Park Grass Experiment / soil organic carbon / ecosystem service    

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Optimum design and preliminary experiments of a novel parallel end traction apparatus for upper-limb

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 726-746 doi: 10.1007/s11465-021-0651-5

Abstract: developed for passive exercise mode based on the derived inverse position solution, and preliminary experiments

Keywords： parallel mechanism     upper-limb rehabilitation     singularity and workspace analyses     performance evaluation     optimum design    

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Experiments on a Secondary Regulated Loading System

Zhan Xingqun,Zhang Yanhua,Zhao Keding

Strategic Study of CAE 2001, Volume 3, Issue 11,   Pages 70-73

Abstract: Experiments on Step, Rectangle, Ramp and Sine Responses of the speed sub-system are done under alternative

Keywords： hydrostatic driving     secondary regulation     loading     experiments    

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Simulation and experiments on a solid sorption combined cooling and power system driven by the exhaust

Peng GAO, Liwei WANG, Ruzhu WANG, Yang YU

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 516-526 doi: 10.1007/s11708-017-0511-5

Abstract: A solid sorption combined cooling and power system driven by exhaust waste heat is proposed, which consists of a MnCl sorption bed, a CaCl sorption bed, an evaporator, a condenser, an expansion valve, and a scroll expander, and ammonia is chosen as the working fluid. First, the theoretical model of the system is established, and the partitioning calculation method is proposed for sorption beds. Next, the experimental system is established, and experimental results show that the refrigerating capacity at the refrigerating temperature of –10°C and the resorption time of 30 min is 1.95 kW, and the shaft power is 109.2 W. The system can provide approximately 60% of the power for the evaporator fan and the condenser fan. Finally, the performance of the system is compared with that of the solid sorption refrigeration system. The refrigerating capacity of two systems is almost the same at the same operational condition. Therefore, the power generation process does not influence the refrigeration process. The exergy efficiency of the two systems is 0.076 and 0.047, respectively. The feasibility of the system is determined, which proves that this system is especially suitable for the exhaust waste heat recovery.

Keywords： solid sorption     exhaust waste heat     combined cooling and power system     exergy efficiency    

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Benzene degradation in waste gas by photolysis and photolysis-ozonation: experiments and modeling

Fariba Mahmoudkhani, Maryam Rezaei, Vahid Asili, Mahsasadat Atyabi, Elena Vaisman, Cooper H. Langford, Alex De Visscher

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 6, doi: 10.1007/s11783-016-0876-4

Abstract: A photochemical model of benzene degradation compares well with experimental data obtained in the Lab. 62 reactions were needed to fully describe benzene degradation. A feasibility study shows that the photolysis of benzene is a cost-effective process. Experimental data and modeling results show that the degradation efficiency will increase when the combination of UV light and ozone is used. The degradation of benzene, a carcinogenic air pollutant, was studied in a gas-phase photochemical reactor with an amalgam lamp emitting ultraviolet light at 185 and 254 nm. Efficient benzene degradation (>70%) was possible for benzene mass flow rates of up to 1.5 mg·min . Adding ozone allowed benzene mass flow rates of up to 5 mg·min to be treated with the same efficiency. In terms of energy consumption, ozone doubles the efficiency of the process. A comprehensive mechanistic simulation model was developed incorporating a chemical kinetics model (62 reactions involving 47 chemical species), a material balance model incorporating diffusion and flow, a flow velocity model, and a light field model. The model successfully predicted the efficiency of the reactor, generally within 20%, which indicates that the model is sound, and can be used for feasibility studies. The prediction of the reactor efficiency in the presence of ozone was less successful, with systematically overestimated efficiency. Condensation of reaction products in the reactor is thought to be the main cause of model inaccuracy. Both experimental data and model predictions show that there is a synergistic effect between ozonation and ultraviolet degradation.

Keywords： Photolysis     Ozone     Benzene     Waste gas     Simulation     Synergism    

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Characterization of interaction between different adsorbents and copper by simulation experiments using

Yan ZHANG,Yuan ZHANG,Tao YU

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 4,   Pages 510-518 doi: 10.1007/s11783-013-0588-y

Abstract: capacity of different types of organic matters (OMs) for Cu was quantitatively studied by simulation experiments

Keywords： interaction     dissolved organic matters     sediment     sorption     desorption     Taihu Lake    

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Diphenylarsinic acid sorption mechanisms in soils using batch experiments and EXAFS spectroscopy

Meng Zhu, Yongming Luo, Ruyi Yang, Shoubiao Zhou, Juqin Zhang, Mengyun Zhang, Peter Christie, Elizabeth L. Rylott

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1237-x

Abstract: Here, batch experiments and extended X-ray absorption fine structure (EXAFS) spectroscopy were used to

Keywords： Diphenylarsinic acid     EXAFS     Fe (hydr)oxide     Soil organic matter     Sorption mechanism    

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On the added value of multi-scale modeling of concrete

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1,   Pages 1-23 doi: 10.1007/s11709-021-0790-0

Abstract: from three sources, namely, multi-scale structural analysis, conventional structural analysis, and experiments

Keywords： experiments     multi-scale analysis     conventional structural analysis     concrete     reinforced concrete    

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Experimental and numerical analysis of beam to column joints in steel structures

Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 642-661 doi: 10.1007/s11709-017-0457-z

Abstract: For the validation of behavioral curves as well as training of the neural network, the experiments were

Keywords： beam to column connections     experiments     component method     neural network model     combinational modeling    

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Experimental study on shear behavior of reinforced concrete beams with web horizontal reinforcement

Dong XU,Yu ZHAO,Chao LIU

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 325-336 doi: 10.1007/s11709-014-0080-1

Abstract: In determining the shear capacity of reinforced concrete beams, current codes do not provide any calculation method to evaluate the influence of web horizontal reinforcement, although they exist as structural reinforcements (or skin reinforcement). The present paper comprises results of 11 reinforced concrete beams in an effort to investigate the influence of web horizontal reinforcement on the shear behavior of reinforced concrete beams. The primary design variables are the shear-span-depth ratio, different reinforcement ratio of stirrups and web horizontal reinforcement. Influence of web horizontal reinforcement on crack patterns and failure mode was studied. It was found that web horizontal reinforcement can increase the shear capacity of the beams and restrain growth of inclined cracks effectively. Test results are very valuable, as very few references of shear tests can be found focusing on the effect of web horizontal reinforcement on the shear capacity of the beams.

Keywords： reinforced concrete beam     shear strength     web horizontal reinforcement     experiments    

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Title Author Date Type Operation

The implications of planting mode on cadmium uptake and remobilization in rice: Field experiments across

Journal Article

Sensitivity analysis and numerical experiments on transient test of compact heat exchanger surfaces

REN Hesheng, LAI Lingjun, CUI Yongzheng

Journal Article

Hydrologic experiments and modeling of two laboratory bioretention systems under different boundary conditions

Ruifen Liu, Elizabeth Fassman-Beck

Journal Article

A metadata model for collaborative experiments and simulations in earthquake engineering

Jean-Pierre BARDET, Nazila MOKARRAM, Fang LIU

Journal Article

Centrifuge experiments for shallow tunnels at active reverse fault intersection

Mehdi SABAGH, Abbas GHALANDARZADEH

Journal Article

THE ROLE OF LONG-TERM EXPERIMENTS IN VALIDATING TRAIT-BASED APPROACHES TO ACHIEVING MULTIFUNCTIONALITY

Journal Article

Optimum design and preliminary experiments of a novel parallel end traction apparatus for upper-limb

Journal Article

Experiments on a Secondary Regulated Loading System

Zhan Xingqun,Zhang Yanhua,Zhao Keding

Journal Article

Simulation and experiments on a solid sorption combined cooling and power system driven by the exhaust

Peng GAO, Liwei WANG, Ruzhu WANG, Yang YU

Journal Article

Benzene degradation in waste gas by photolysis and photolysis-ozonation: experiments and modeling

Fariba Mahmoudkhani, Maryam Rezaei, Vahid Asili, Mahsasadat Atyabi, Elena Vaisman, Cooper H. Langford, Alex De Visscher

Journal Article

Characterization of interaction between different adsorbents and copper by simulation experiments using

Yan ZHANG,Yuan ZHANG,Tao YU

Journal Article

Diphenylarsinic acid sorption mechanisms in soils using batch experiments and EXAFS spectroscopy

Meng Zhu, Yongming Luo, Ruyi Yang, Shoubiao Zhou, Juqin Zhang, Mengyun Zhang, Peter Christie, Elizabeth L. Rylott

Journal Article

On the added value of multi-scale modeling of concrete

Journal Article

Experimental and numerical analysis of beam to column joints in steel structures

Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN

Journal Article

Experimental study on shear behavior of reinforced concrete beams with web horizontal reinforcement

Dong XU,Yu ZHAO,Chao LIU

Journal Article