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Microdamage study of granite under thermomechanical coupling based on the particle flow code

Frontiers of Structural and Civil Engineering   Pages 1413-1427 doi: 10.1007/s11709-023-0953-2

Abstract: The thermomechanical coupling of rocks refers to the interaction between the mechanical and thermodynamicThe study of this coupling interaction is essential for understanding the mechanical and thermodynamicA series of numerical thermomechanical coupling tests are then conducted to calibrate the micro-parameters

Keywords： thermomechanical coupling effect     granite     improved linear parallel bond model     thermal property     particle    

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Simulation of steel beam under ceiling jet based on a wind–fire–structure coupling model

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 78-98 doi: 10.1007/s11709-022-0936-8

Abstract: Instead of applying the concept of adiabatic surface temperature (AST) to achieve fluid–structure coupling

Keywords： CFD–FEM coupling     steel beam     wind     ceiling jet     numerical heat transfer    

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catalysts derived from zeolitic imidazolate framework@MXene composites for efficient oxidative self-coupling

Frontiers of Chemical Science and Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11705-023-2378-9

Abstract: The catalytic efficiency of the catalyst is tested for the self-coupling of 4-methoxybenzylamine to produce

Keywords： MXene     sacrificial template     oxidative self-coupling     Co nanoparticles     imine    

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Automatic risk identification and safety early-warning of underground construction under complex conditions

Ding Lieyun,Zhou Cheng

Strategic Study of CAE 2012, Volume 14, Issue 12,   Pages 85-93

Abstract: during construction, we brought up an approach based on safety risk information fusion and temporal-spatialcoupling for metro construction, which is able to effectively identify and track dangerous construction

Keywords： metro construction safety     automatic risk identification     information fused early-warning     spatial-temperrisk coupling     real-timing safety control    

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Soil spatial variability impact on the behavior of a reinforced earth wall

Adam HAMROUNI, Daniel DIAS, Badreddine SBARTAI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 518-531 doi: 10.1007/s11709-020-0611-x

Abstract: This article presents the soil spatial variability effect on the performance of a reinforced earth wallThe influences of the spatial variability response of the geotechnical system in terms of horizontalThe results obtained show that the spatial variability has an important influence on the facing horizontal

Keywords： reinforced earth wall     geosynthetic     random field     spatial variability     Monte Carlo simulation    

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Effect of alkyl nitrite decomposition on catalytic performance of CO coupling reaction over supported

Zhenhua LI, Weihan WANG, Dongxue YIN, Jing LV, Xinbin MA

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 410-414 doi: 10.1007/s11705-012-1213-5

Abstract: The syntheses of dimethyl oxalate (DMO) and diethyl oxalate (DEO) by CO coupling reaction in gaseous

Keywords： palladium     CO coupling     dialkyl oxalate     alkyl nitrite     decomposition    

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Thermodynamic and economic analyses of a coal and biomass indirect coupling power generation system

Buqing YE, Rui ZHANG, Jin CAO, Bingquan SHI, Xun ZHOU, Dong LIU

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 590-606 doi: 10.1007/s11708-020-0809-6

Abstract: The coal and biomass coupling power generation technology is considered as a promising technology forIn this paper, a novel coal and biomass indirect coupling system is proposed based on the technologyFor the sake of comparison, a coal and biomass direct coupling system is also introduced based on theThe process of the direct and the indirect coupling system is simulated.worse, but the economic performance is better than that of the direct coupling system.

Keywords： biomass     indirect coupling system     process simulation     thermodynamic analysis     economic analysis    

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Industrial eco-efficiency and its spatial-temporal differentiation in China

Wei YANG, Fengjun JIN, Chengjin WANG, Chen LV

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4,   Pages 559-568 doi: 10.1007/s11783-012-0400-4

Abstract: The aim of this paper is to study the spatial-temporal differentiation of industrial eco-efficiency inUsing methods based on the data envelopment analysis (DEA) model and exploratory spatial data analysis(ESDA) and data from 1985, 1995, 2005, and 2008 of 30 provinces in China, the spatial-temporal patternindustrial eco-efficiency are dominated by clustering of relatively low efficiency provinces; second, spatialunits are concentrated in eastern China, and the lower level spatial units are mainly in western and

Keywords： industrial eco-efficiency     data envelopment analysis (DEA) model     exploratory spatial data analysis (ESDA    

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Border-search and jump reduction method for size optimization of spatial truss structures

Babak DIZANGIAN, Mohammad Reza GHASEMI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 123-134 doi: 10.1007/s11709-018-0478-2

Abstract: This paper proposes a sensitivity-based border-search and jump reduction method for optimum design of spatialSpatial truss problems were attempted for optimization in order to show the fastness and efficiency of

Keywords： optimum design     sensitivity analysis     reduction method     spatial trusses     OpenSees    

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Abundance, spatial distribution, and physical characteristics of microplastics in stormwater detention

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1724-y

Abstract: Despite extensive research on microplastics (MP) in marine environments, little is known about MP abundance and transport in terrestrial systems. There is, therefore, still little understanding of the main mechanisms driving the substantial transport of MP across different environmental compartments. Storm events can transport MP beyond boundaries, such as from the land to groundwater or the ocean, as has already been discovered for organic carbon transport. Urban stormwater detention ponds are suitable environments to study the impact of stormwater on the environmental fate and transport of MP. Herein, we investigate the longitudinal and vertical distribution of MP within two detention ponds with different physical characteristics. Soil samples were collected at various locations and from multiple depths (surface and subsurface layers) for measuring MP concentrations using fluorescence microscopy. Our findings show that MP are retained more near the inlet of the ponds, and MP of larger sizes were found more abundantly near inlets than outlets. We also found that MP mass and sizes decrease from surface soil to subsurface soil. In the pond, where vegetation (grass root network) was more considerable, MP were found more evenly distributed along the depth. In terms of shape, the fragments were the most abundant MP shape.

Keywords： Microplastic     Environmental transport     Soil pollution     Stormwater     Detention ponds    

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Enhancing the aromatic selectivity of cyclohexane aromatization by CO2 coupling

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1801-1808 doi: 10.1007/s11705-023-2325-9

Abstract: Improving the aromatic selectivity in the alkane aromatization process is of great importance for its practical utilization but challenge to make because the high H/C ratio of alkanes would lead to a serious hydrogen transfer process and a large amount of light alkanes. Herein, CO2 is introduced into the cyclohexane conversion process on the HZSM-5 zeolite, which can improve the aromatic selectivity. By optimizing the reaction conditions, an improved aromatic (benzene, toluene, xylene, and C9+) selectivity of 48.2% can be obtained at the conditions of 2.7 MPa (CO2), 450 °C, and 1.7 h−1, which is better than that without CO2 (aromatic selectivity = 43.2%). In situ transmission Fourier transform infrared spectroscopy spectra illustrate that many oxygenated chemical intermediates (e.g., carboxylic acid, anhydride, unsaturated aldehydes/ketones or ketene) would be formed during the cyclohexane conversion process in the presence of CO2. 13C isotope labeling experimental results demonstrate that CO2 can enter into the aromatics through the formation of oxygenated chemical intermediates and thereby improve the aromatic selectivity. This study may open a green, economic, and promising way to improve the aromatic selectivity for alkane aromatization process.

Keywords： aromatics     carbon dioxide     aromatization     coupling reaction     ZSM-5 zeolite    

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Spatial prediction of soil contamination based on machine learning: a review

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1693-1

Abstract:

● A review of machine learning (ML) for spatial prediction of soil

Keywords： Soil contamination     Machine learning     Prediction     Spatial distribution    

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Mild and highly regioselective synthesis of biaryl acids via Rh(I)-catalyzed cross-dehydrogenative coupling

Yun Liu, Youquan Zhu, Chaojun Li

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 3-8 doi: 10.1007/s11705-017-1693-4

Abstract: A mild and efficient synthesis for the biaryl acids via rhodium-catalyzed cross-dehydrogenative coupling

Keywords： biaryl acids     cross-dehydrogenative coupling     rhodium-catalyzed    

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Optimization of spatial structure designs of control rod using Monte Carlo code RMC

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 974-983 doi: 10.1007/s11708-021-0769-5

Abstract: In this work, some control rod designs are proposed with optimized spatial structures including the spatiallyFor the spatially mixed rod, rare-earth absorbers are combined with B4C in spatial structure

Keywords： control rod     optimized spatial structure     neutronic performance     burnup stability    

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Differences in distributions, assembly mechanisms, and putative interactions of AOB and NOB at a large spatial

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1722-0

Abstract:

● Nitrifiers in WWTP were investigated at large spatial scale.

Keywords： Activated sludge     Spatial distributions     Microbial assembly     Co-occurrence patterns     Nitrifying bacteria    

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Title Author Date Type Operation

Microdamage study of granite under thermomechanical coupling based on the particle flow code

Journal Article

Simulation of steel beam under ceiling jet based on a wind–fire–structure coupling model

Journal Article

catalysts derived from zeolitic imidazolate framework@MXene composites for efficient oxidative self-coupling

Journal Article

Automatic risk identification and safety early-warning of underground construction under complex conditions

Ding Lieyun,Zhou Cheng

Journal Article

Soil spatial variability impact on the behavior of a reinforced earth wall

Adam HAMROUNI, Daniel DIAS, Badreddine SBARTAI

Journal Article

Effect of alkyl nitrite decomposition on catalytic performance of CO coupling reaction over supported

Zhenhua LI, Weihan WANG, Dongxue YIN, Jing LV, Xinbin MA

Journal Article

Thermodynamic and economic analyses of a coal and biomass indirect coupling power generation system

Buqing YE, Rui ZHANG, Jin CAO, Bingquan SHI, Xun ZHOU, Dong LIU

Journal Article

Industrial eco-efficiency and its spatial-temporal differentiation in China

Wei YANG, Fengjun JIN, Chengjin WANG, Chen LV

Journal Article

Border-search and jump reduction method for size optimization of spatial truss structures

Babak DIZANGIAN, Mohammad Reza GHASEMI

Journal Article

Abundance, spatial distribution, and physical characteristics of microplastics in stormwater detention

Journal Article

Enhancing the aromatic selectivity of cyclohexane aromatization by CO2 coupling

Journal Article

Spatial prediction of soil contamination based on machine learning: a review

Journal Article

Mild and highly regioselective synthesis of biaryl acids via Rh(I)-catalyzed cross-dehydrogenative coupling

Yun Liu, Youquan Zhu, Chaojun Li

Journal Article

Optimization of spatial structure designs of control rod using Monte Carlo code RMC

Journal Article

Differences in distributions, assembly mechanisms, and putative interactions of AOB and NOB at a large spatial

Journal Article