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Synthesis, characterization and assessment thermal properties of clay based nanopigments

Mohammad Banimahd KIEVANI, Milad EDRAKI

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 1,   Pages 40-45 doi: 10.1007/s11705-015-1505-7

Abstract: Nano-clay based pigments (NCP) are new type of pigments composed of organic dyes and layered silicate-clay

Keywords： nanopigment     layered silicate     cationic dye     thermal properties    

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Effect of the degree of template removal from mesoporous silicate materials on their adsorption of heavy

Farouq TWAIQ,M.S. NASSER,Sagheer A. ONAIZI

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 4,   Pages 488-497 doi: 10.1007/s11705-014-1459-1

Abstract: evaluate the adsorption of heavy oil from aqueous solutions with different oil contents over mesoporous silicateThe mesoporous silicate materials have been synthesized from tetraethylorthosilicate as a silica precursor

Keywords： heavy oil     mesoporous silicate material     kinetics     template removal     adsorption    

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Capture of carbon dioxide over porous solid adsorbents lithium silicate, lithium aluminate and magnesium

P. V. Korake, A. G. Gaikwad

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2,   Pages 215-226 doi: 10.1007/s11705-010-1012-9

Abstract: The capturing process for carbon dioxide over porous solid adsorbents such as lithium silicate, lithiumLithium silicate was prepared by the sol gel and solid fusion methods.The lithium silicate adsorbent was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopyThe capturing of carbon dioxide over lithium silicate, lithium aluminate, and magnesium aluminate wasThe effect of the addition of (promoter) sodium, potassium, and cesium in the lithium silicate adsorbent

Keywords： capturing CO2     lithium silicate     lithium aluminate     magnesium aluminate    

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capture of carbon dioxide by transition metal aluminates, calcium aluminate, calcium zirconate, calcium silicate

Ganesh TILEKAR, Kiran SHINDE, Kishor KALE, Reshma RASKAR, Abaji GAIKWAD

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 477-491 doi: 10.1007/s11705-011-1107-y

Abstract: by transition metal (Mn, Ni, Co and Zn) aluminates, calcium aluminate, calcium zirconate, calcium silicateCalcium zirconate captured 13.85 wt-% CO at 650°C and 2.5 atm and calcium silicate captured 14.31 wtIn addition, calcium aluminate, calcium zirconate, calcium silicate and lithium zirconate adsorbentscarbon dioxide over the adsorbents was calcium aluminatesilicate

Keywords： captured CO2     pre-combustion temperature     characterization     calcium silicate     calcium zirconate    

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Stability analysis of layered slopes in unsaturated soils

Guangyu DAI; Fei ZHANG; Yuke WANG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 378-387 doi: 10.1007/s11709-022-0808-2

Abstract: This study presents stability analyses of layered soil slopes in unsaturated conditions and uses a limitAn example of a two-layered slope in clay and silt is selected to verify the used method by comparingParametric analyses are conducted to explore the influences of the matric suction on the stability of layeredresults show that larger suction stress provided in unsaturated clay dominates the stability of the layeredInfiltration/evaporation can obviously affect the stability of unsaturated layered slopes, but their

Keywords： slope stability     suction stress     unsaturated soil     layered slope     limit equilibrium    

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Quantification of seepage in a multi-layered disconnected river-aquifer system

Jiang LI, Haizhu HU, Xiaomin MAO, Yi LIU

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 237-245 doi: 10.15302/J-FASE-2017135

Abstract: The vadose zone under riverbeds usually exhibits a multi-layered structure, particularly when paved withby assessing the dominant low permeability layers (including but not limited to the liners) in multi-layered

Keywords： infiltration     low permeability liner     multi-layered porous media     river-aquifer seepage    

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Crack evolution of soft–hard composite layered rock-like specimens with two fissures under uniaxial compression

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1372-1389 doi: 10.1007/s11709-021-0772-2

Abstract: Acoustic emission and digital image correlation were used to study the spatiotemporal evolution characteristics of crack extension of soft and hard composite laminated rock masses (SHCLRM) containing double fissures under uniaxial compression. The effects of different rock combination methods and prefabricated fissures with different orientations on mechanical properties and crack coalescence patterns were analyzed. The characteristics of the acoustic emission source location distribution, and frequency changes of the crack evolution process were also investigated. The test results show that the damage mode of SHCLRM is related to the combination mode of rock layers and the orientation of fractures. Hard layers predominantly produce tensile cracks; soft layers produce shear cracks. The first crack always sprouts at the tip or middle of prefabricated fractures in hard layers. The acoustic emission signal of SHCLRM with double fractures has clear stage characteristics, and the state of crack development can be inferred from this signal to provide early warning for rock fracture instability. This study can provide a reference for the assessment of the fracture development status between adjacent roadways in SHCLRM in underground mines, as well as in roadway layout and support.

Keywords： soft−hard composite layered rock mass     double cracks     crack evolution     acoustic emission     digital image    

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Hierarchically porous cellulose nanofibril aerogel decorated with polypyrrole and nickel-cobalt layered

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1593-1607 doi: 10.1007/s11705-023-2348-2

Abstract: as a substrate to integrate highly conductive polypyrrole and active nanoflower-like nickel-cobalt layered

Keywords： cellulose nanofibril     aerogel     nickel-cobalt layered double hydroxide     polypyrrole     nonenzymatic glucose    

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Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 937-947 doi: 10.1007/s11709-021-0754-4

Abstract: This study aims to investigate hydrofracturing in double-layered soil through theoretical and experimentalis a linear relationship between the fracturing pressure and confining pressure in concentric double-layered

Keywords： hydraulic fracturing pressure     layered     cavity expansion theory     triaxial fracturing test     cohesive soil    

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Size effects in two-dimensional layered materials modeled by couple stress elasticity

Wipavee WONGVIBOONSIN, Panos GOURGIOTIS, Chung Nguyen VAN, Suchart LIMKATANYU, Jaroon RUNGAMORNRAT

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 425-443 doi: 10.1007/s11709-021-0707-y

Abstract: In the present study, the effect of material microstructure on the mechanical response of a two-dimensional elastic layer perfectly bonded to a substrate is examined under surface loadings. In the current model, the substrate is treated as an elastic half plane as opposed to a rigid base, and this enables its applications in practical cases when the modulus of the layer (e.g., the coating material) and substrate (e.g., the coated surface) are comparable. The material microstructure is modeled using the generalized continuum theory of couple stress elasticity. The boundary value problems are formulated in terms of the displacement field and solved in an analytical manner via the Fourier transform and stiffness matrix method. The results demonstrate the capability of the present continuum theory to efficiently model the size-dependency of the response of the material when the external and internal length scales are comparable. Furthermore, the results indicated that the material mismatch and substrate stiffness play a crucial role in the predicted elastic field. Specifically, the study also addresses significant discrepancy of the response for the case of a layer resting on a rigid substrate.

Keywords： cosserat     layered materials     size effects     microstructure    

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New pseudo-dynamic analysis of two-layered cohesive-friction soil slope and its numerical validation

Suman HAZARI, Sima GHOSH, Richi Prasad SHARMA

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1492-1508 doi: 10.1007/s11709-020-0679-3

Abstract: study, the limit equilibrium modified pseudo-dynamic method is used to analyze the stability of two-layeredformulations derived from an analytical method are proposed for the predicting the seismic response in two-layered

Keywords： layered soil     limit equilibrium method     seismic analysis     damping     PLAXIS    

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Mechanical responses of multi-layered ground due to shallow tunneling with arbitrary ground surface load

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 5,   Pages 745-762 doi: 10.1007/s11709-023-0935-4

Abstract: complex variable theory is proposed to investigate ground responses due to shallow tunneling in multi-layeredmodel is superior to the classical model for analyzing ground responses of shallow tunneling in multi-layered

Keywords： analytical model     mechanical response     multi-layered ground     shallow tunneling     ground surface load    

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Anisotropy of multi-layered structure with sliding and bonded interlayer conditions

Lingyun YOU, Kezhen YAN, Jianhong MAN, Nengyuan LIU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 632-645 doi: 10.1007/s11709-020-0617-4

Abstract: A better understanding of the mechanical behavior of the multi-layered structure under external loadingthis study are to propose and develop an analytical solution for the mechanical behaviors of multi-layeredloading, and to investigate the impact of anisotropic layers and interlayer conditions on the multi-layeredThen the global matrix technique is applied to achieve the analytical solution of multi-layered structureMoreover, following by the verification of the proposed analytical solution, one typical three-layered

Keywords： multi-layered structure     Hankel transformation     anisotropic     transversely isotropic     interlayer condition    

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Synergistic effect of V and Fe in Ni/Fe/V ternary layered double hydroxides for efficient and durable

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 102-115 doi: 10.1007/s11705-022-2179-6

Abstract: Herein, via a one-pot hydrothermal method, Ni/Fe/V ternary layered double hydroxides (NiFeV-LDH) derived

Keywords： oxygen evolution reaction     electrocatalysts     ternary layered double hydroxides     long-term stability    

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Layered alkali titanates (ATiO): possible uses for energy/environment issues

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 631-655 doi: 10.1007/s11708-021-0776-6

Abstract: Uses of layered alkali titanates (A2TinO2n<Layered alkali titanates of various structural types and compositions are regarded as a class of nanostructuredIf compared with commonly known titanium dioxides (anatase and rutile), materials design based on layeredThe ion exchange ability of layered alkali titanate is used for the collection of metal ions from waterThese possible materials design made layered alkali titanates promising for energy (including catalysis

Keywords： layered alkali titanates     photocatalysis     hydrogen evdution     metal ions collection    

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Title Author Date Type Operation

Synthesis, characterization and assessment thermal properties of clay based nanopigments

Mohammad Banimahd KIEVANI, Milad EDRAKI

Journal Article

Effect of the degree of template removal from mesoporous silicate materials on their adsorption of heavy

Farouq TWAIQ,M.S. NASSER,Sagheer A. ONAIZI

Journal Article

Capture of carbon dioxide over porous solid adsorbents lithium silicate, lithium aluminate and magnesium

P. V. Korake, A. G. Gaikwad

Journal Article

capture of carbon dioxide by transition metal aluminates, calcium aluminate, calcium zirconate, calcium silicate

Ganesh TILEKAR, Kiran SHINDE, Kishor KALE, Reshma RASKAR, Abaji GAIKWAD

Journal Article

Stability analysis of layered slopes in unsaturated soils

Guangyu DAI; Fei ZHANG; Yuke WANG

Journal Article

Quantification of seepage in a multi-layered disconnected river-aquifer system

Jiang LI, Haizhu HU, Xiaomin MAO, Yi LIU

Journal Article

Crack evolution of soft–hard composite layered rock-like specimens with two fissures under uniaxial compression

Journal Article

Hierarchically porous cellulose nanofibril aerogel decorated with polypyrrole and nickel-cobalt layered

Journal Article

Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Journal Article

Size effects in two-dimensional layered materials modeled by couple stress elasticity

Wipavee WONGVIBOONSIN, Panos GOURGIOTIS, Chung Nguyen VAN, Suchart LIMKATANYU, Jaroon RUNGAMORNRAT

Journal Article

New pseudo-dynamic analysis of two-layered cohesive-friction soil slope and its numerical validation

Suman HAZARI, Sima GHOSH, Richi Prasad SHARMA

Journal Article

Mechanical responses of multi-layered ground due to shallow tunneling with arbitrary ground surface load

Journal Article

Anisotropy of multi-layered structure with sliding and bonded interlayer conditions

Lingyun YOU, Kezhen YAN, Jianhong MAN, Nengyuan LIU

Journal Article

Synergistic effect of V and Fe in Ni/Fe/V ternary layered double hydroxides for efficient and durable

Journal Article

Layered alkali titanates (ATiO): possible uses for energy/environment issues

Journal Article