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Vibration analysis of nano-structure multilayered graphene sheets using modified strain gradient theory

Amir ALLAHBAKHSHI,Masih ALLAHBAKHSHI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 2,   Pages 187-197 doi: 10.1007/s11465-015-0339-9

Abstract:

In this paper, for the first time, the modified strain gradient theory is used as a new size-dependentKirchhoff micro-plate model to study the effect of interlayer van der Waals (vdW) force for the vibrationThe model contains three material length scale parameters, which may effectively capture the size effectindicate that the present model can predict prominent natural frequency with the reduction of structural size, especially when the plate thickness is on the same order of the material length scale parameter.

Keywords： graphene     van der Waals (vdW) force     modi- fied strain gradient elasticity theory     size effect parameter    

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Determination of mechanical parameters for elements in meso-mechanical models of concrete

Xianglin GU, Junyu JIA, Zhuolin WANG, Li HONG, Feng LIN

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 391-401 doi: 10.1007/s11709-013-0225-7

Abstract: By comparing the calculated results with those predicted by the Carpinteri and Weibull size effects laws

Keywords： concrete     meso-mechanical model     discrete element method     size effect     mechanical parameter    

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Effect of particle size on coal char----NO reaction

Xiumin JIANG, Xiangyong HUANG, Jiaxun LIU, Chaoqun ZHANG

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 221-228 doi: 10.1007/s11708-011-0146-x

Abstract: Particle size had a noticeable effect on the magnitude of changes, which was observed on the surfaceincreased its -NO, pyridine-N-oxide, and -NO functional group contents with a decrease in particle size

Keywords： NO reduction     chemisorption     particle size     X-ray photoelectron spectroscopy     density functional theory (    

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Effect of Cu-ZSM-5 catalysts with different CuO particle size on selective catalytic oxidation of N,N-Dimethylformamide

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 10, doi: 10.1007/s11783-022-1557-0

Abstract:

● A series of Cu-ZSM-5 catalysts were tested for DMF selective catalytic oxidation.

Keywords： N     N-Dimethylformamide     Selective catalytic oxidation     Cu-ZSM-5     CuO particle size    

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Effect of size on biaxial flexural strength for cement-based materials by using a triangular plate method

Hakan T TURKER

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 8,   Pages 1017-1028 doi: 10.1007/s11709-022-0871-8

Abstract: The effect of size on the biaxial flexural strength (BFS) of Portland cement mortar was investigatedAn experimental program was conceived to study the size effect by keeping a constant water-cement ratioThe effect of specimen length increase on BFS was more significant than on the effect of the specimenThe variations in specimens’ thickness indicated a deterministic Type I size effect, while the variationsin specimens’ length showed an energetic-statistical Type I size effect.

Keywords： testing     apparatus & methods     plain concrete     tensile properties     biaxial flexural strength     triangular plate method    

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Effect of noble metal nanoparticle size on C–N bond cleavage performance in hydrodenitrogenation: a study

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1986-2000 doi: 10.1007/s11705-023-2337-5

Abstract: Breakage of the C–N bond is a structure sensitive process, and the catalyst size significantly affectsOn the active metal nanoparticle scale, the role of catalyst size in C–N bond cleavage has not been clearlycleavage, while the reaction rate tended to increase first and then decrease as the catalyst nanoparticle sizeanalysis indicates that the variation of different sites on the catalyst is the intrinsic factor of the sizeWhen Ru nanoparticles are smaller than 1.9 nm, they have a strong adsorption effect on the reactants,

Keywords： sp3/sp2-hybridized C–N bond     noble metal nanoparticle     catalytic active site     turnover frequency     DFT    

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Nonlinear Size-dependent Study of Ultra-thin Elastic Film With Surface Effect

Huang Dianwu,Li Yuanjun,Li Kai

Strategic Study of CAE 2006, Volume 8, Issue 4,   Pages 54-59

Abstract:

A new nano-scale plate-like model in which the influence of surface effect and the geometrically nonlinearfound that when the thickness of,the film is equal to or less than the intrinsic scale, the surface effect

Keywords： thin elastic film     geometrically nonlinear     surface effect     intrinsic scale     size-dependence    

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Effect of hierarchical ZSM-5 zeolite crystal size on diffusion and catalytic performance of n-heptane

Shuman Xu, Xiaoxiao Zhang, Dangguo Cheng, Fengqiu Chen, Xiaohong Ren

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 780-789 doi: 10.1007/s11705-018-1733-8

Abstract: The effect of the crystal size on the catalytic cracking of -heptane was investigated and the ThieleThe crystal size affected the textual properties of the catalysts but not the acidic properties of the

Keywords： hierarchical ZSM-5     crystal size     catalytic cracking     Thiele modulus     effectiveness factor    

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Particle Size and Crystal Phase Effects in Fischer-Tropsch Catalysts

Jin-Xun Liu, Peng Wang, Wayne Xu, Emiel J. M. Hensen

Engineering 2017, Volume 3, Issue 4,   Pages 467-476 doi: 10.1016/J.ENG.2017.04.012

Abstract: correlated with the electronic and geometric structure of the nanoparticles, which depend on the particle size

Keywords： Fischer-Tropsch synthesis     Iron     cobalt and ruthenium carbides     Size effect     Crystal structure    

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Effect of loading rate on shear strength parameters of mechanically and biologically treated waste

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1595-7

Abstract:

● Mechanical behavior of MBT waste affected by loading rate was investigated.

Keywords： and biologically treated waste     Landfill     Triaxial test     Loading rate     Axial strain     Shear strength parameter    

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The size distribution of airborne bacteria and human pathogenic bacteria in a commercial composting plant

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-020-1356-4

Abstract:

•Bacterial concentrations from eight stages were 104–105copies/m3.

Keywords： Size distribution     Airborne bacteria     Biological diversity     Human pathogenic bacteria     Composting plants    

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Size-dependent Elastic Instability of Gel CylinderWith Surface Stress

Huang Dianwu,Qiao Ling, Wang Shiji

Strategic Study of CAE 2007, Volume 9, Issue 4,   Pages 50-54

Abstract:

The elastic instability of a gel cylinder was researched with classical elastic theory. The non-classic boundary condition of the elastic instability has been educed by the energy functional variation analysis.  So a criterion equation of the elastic instability can be got. Through the analysis of the equation, it is found that the elastic instability is relevant to the radius, intrinsic scale and instable wavelength of the cylinder.

Keywords： gel cylinder     elastic instability     intrinsic scale     surface effect    

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Particle size distribution and shape control of Au nanoparticles used for particle gun

S. Kida, M. Ichiji, J. Watanabe, I. Hirasawa

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 60-64 doi: 10.1007/s11705-013-1313-x

Abstract: However, the control of particle size distribution (PSD) and shape of Au nanoparticles is too difficultReduction crystallization experiments were performed in aqueous solution in order to clarify the effectMoreover, in single-jet and double-jet, the mean size of the obtained Au particles increases with the

Keywords： reduction crystallization     particle size distribution     gene transferring media    

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A better way to do small-for-size liver transplantation in rats

Jiang LI, Yu HOU, Jing LIU, Bin LIU, Li LI

Frontiers of Medicine 2011, Volume 5, Issue 1,   Pages 106-110 doi: 10.1007/s11684-011-0113-2

Abstract:

Establishing a model for small-for-size liver transplantation is the basis for this study of partialThis study aims to explore a simpler and more effective way of establishing a 30% small-for-size liverSmall-for-size orthotopic liver transplantation was performed using Kamada’s two-cuff method.and right lobes for grafting may be a more effective and simpler way of establishing a 30% small-for-size

Keywords： liver transplantation     small-for-size     rats    

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Processing parameter optimization of fiber laser beam welding using an ensemble of metamodels and MOABC

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0703-5

Abstract: Furthermore, the main effect and the interaction effect of processing parameters on bead geometries are

Keywords： laser beam welding     parameter optimization     metamodel     multi-objective    

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Title Author Date Type Operation

Vibration analysis of nano-structure multilayered graphene sheets using modified strain gradient theory

Amir ALLAHBAKHSHI,Masih ALLAHBAKHSHI

Journal Article

Determination of mechanical parameters for elements in meso-mechanical models of concrete

Xianglin GU, Junyu JIA, Zhuolin WANG, Li HONG, Feng LIN

Journal Article

Effect of particle size on coal char----NO reaction

Xiumin JIANG, Xiangyong HUANG, Jiaxun LIU, Chaoqun ZHANG

Journal Article

Effect of Cu-ZSM-5 catalysts with different CuO particle size on selective catalytic oxidation of N,N-Dimethylformamide

Journal Article

Effect of size on biaxial flexural strength for cement-based materials by using a triangular plate method

Hakan T TURKER

Journal Article

Effect of noble metal nanoparticle size on C–N bond cleavage performance in hydrodenitrogenation: a study

Journal Article

Nonlinear Size-dependent Study of Ultra-thin Elastic Film With Surface Effect

Huang Dianwu,Li Yuanjun,Li Kai

Journal Article

Effect of hierarchical ZSM-5 zeolite crystal size on diffusion and catalytic performance of n-heptane

Shuman Xu, Xiaoxiao Zhang, Dangguo Cheng, Fengqiu Chen, Xiaohong Ren

Journal Article

Particle Size and Crystal Phase Effects in Fischer-Tropsch Catalysts

Jin-Xun Liu, Peng Wang, Wayne Xu, Emiel J. M. Hensen

Journal Article

Effect of loading rate on shear strength parameters of mechanically and biologically treated waste

Journal Article

The size distribution of airborne bacteria and human pathogenic bacteria in a commercial composting plant

Journal Article

Size-dependent Elastic Instability of Gel CylinderWith Surface Stress

Huang Dianwu,Qiao Ling, Wang Shiji

Journal Article

Particle size distribution and shape control of Au nanoparticles used for particle gun

S. Kida, M. Ichiji, J. Watanabe, I. Hirasawa

Journal Article

A better way to do small-for-size liver transplantation in rats

Jiang LI, Yu HOU, Jing LIU, Bin LIU, Li LI

Journal Article

Processing parameter optimization of fiber laser beam welding using an ensemble of metamodels and MOABC

Journal Article