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Analyzing the characterization of pore structures and permeability of diesel contaminated clays under

Frontiers of Structural and Civil Engineering Pages 1264-1280 doi: 10.1007/s11709-023-0921-x

Abstract: intrusion porosimetry (MIP) and X-ray micro-computed tomography (XRμCT) were used to characterize the poreanalysis yielded consistent results; it showed that aging renders pores more spherical and isotropic and poreThis weakens the pore connectivity.aging led to the rearrangement of soil particles, tighter interparticle overlapping, and a reduction in poreThe combination of MIP and XRμCT provided a comprehensive and reliable characterization of the soil pore

Keywords： MIP XRμCT aging diesel content pore structure permeability characteristics

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Catalyst particle shapes and pore structure engineering for hydrodesulfurization and hydrodenitrogenation

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6, Pages 897-908 doi: 10.1007/s11705-021-2127-x

Abstract: Catalyst particle shapes and pore structure engineering are crucial for alleviating internal diffusionThe effects of catalyst particle shapes (sphere, cylinder, trilobe, and tetralobe) and pore structures(pore diameter and porosity) on HDS/HDN performance at the particle scale are investigated via mathematicalAn optimal average HDS/HDN reaction rate exists as the catalyst pore diameter and porosity increase,This study provides insights into the engineering of catalyst particle shapes and pore structures for

Keywords： hydrodesulfurization hydrodenitrogenation particle shape pore structure

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Uncoupled state space solution to layered poroelastic medium with anisotropic permeability and compressible pore

Zhiyong AI, Wenze ZENG, Yichong CHENG, Chao WU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2, Pages 171-179 doi: 10.1007/s11709-011-0103-0

Abstract: three-dimensional consolidation of layered poroelastic medium with anisotropic permeability and compressible poreNumerical results show that the anisotropy of permeability and the compressibility of pore fluid have

Keywords： solution layered poroelastic medium three-dimensional consolidation anisotropic permeability compressible pore

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Influence of pore structure on biologically activated carbon performance and biofilm microbial characteristics

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1419-1

Abstract:

• Pore structure affects biologically activated carbon performance.

Keywords： Granular activated carbon Biologically activated carbon filter Bacterial community structure Pore

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Effect of catalyst layer mesoscopic pore-morphology on cold start process of PEM fuel cells

Ahmed Mohmed DAFALLA, Fangming JIANG

Frontiers in Energy 2021, Volume 15, Issue 2, Pages 460-472 doi: 10.1007/s11708-021-0733-4

Abstract: This work studies the effect of CCL mesoscopic pore-morphology on PEMFC cold start.The CCL mesoscale morphology is characterized by two tortuosity factors of the ionomer network and poreThe CCL of less tortuous pore structure reduces the water back diffusion resistance from the CCL to protonpreparation methods, which can create catalyst layers of larger size primary pores and less tortuous pore

Keywords： cold start energy conversion fuel cells mesoscale morphology tortuosity water management

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polybenzoxazine-based carbon microspheres with nitrogen functionalities: Effects of mixed solvents on pore

Uthen Thubsuang, Suphawadee Chotirut, Apisit Thongnok, Archw Promraksa, Mudtorlep Nisoa, Nicharat Manmuanpom, Sujitra Wongkasemjit, Thanyalak Chaisuwan

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6, Pages 1072-1086 doi: 10.1007/s11705-019-1899-8

Abstract: In this study, polybenzoxazine (PBZ)-based carbon microspheres were prepared via a facile method using a mixture of formaldehyde (F) and dimethylformamide (DMF) as the solvent. The PBZ microspheres were successfully obtained at the F/DMF weight ratios of 0.4 and 0.6. These microspheres exhibited high nitrogen contents after carbonization. The microstructures of all the samples showed an amorphous phase and a partial graphitic phase. The porous carbon with the F/DMF ratio of 0.4 showed significantly higher specific capacitance (275.1 F g ) than the reference carbon (198.9 F g ) at 0.05 A g . This can be attributed to the synergistic electrical double-layer capacitor and pseudo-capacitor behaviors of the porous carbon with the F/DMF ratio of 0.4. The presence of nitrogen/oxygen functionalities induced pseudo-capacitance in the microspheres, and hence increased their total specific capacitance. After activation with CO , the specific surface area of the carbon microspheres with the F/DMF ratio of 0.4 increased from 349 to 859 m g and the specific capacitance increased to 424.7 F g . This value is approximately two times higher than that of the reference carbon. The results indicated that the F/DMF ratio of 0.4 was suitable for preparing carbon microspheres with good supercapacitive performance. The nitrogen/oxygen functionalities and high specific surface area of the microspheres were responsible for their high capacitance.

Keywords： PBZ carbon porous materials microsphere supercapacitor

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Applications of atomic force microscopy in immunology

Jiping Li, Yuying Liu, Yidong Yuan, Bo Huang

Frontiers of Medicine 2021, Volume 15, Issue 1, Pages 43-52 doi: 10.1007/s11684-020-0769-6

Abstract: neutrophil-extracellular-trap release by neutrophils, the immunological functions of macrophages, and the membrane pore

Keywords： cellular mechanics atomic force microscopy neutrophil extracellular trap macrophage phagocytosis pore

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Pore-scale simulation of water/oil displacement in a water-wet channel

Jin Zhao, Guice Yao, Dongsheng Wen

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4, Pages 803-814 doi: 10.1007/s11705-019-1835-y

Abstract: Water/oil flow characteristics in a water-wet capillary were simulated at the pore scale to increaseVolume of fluid method was used to capture the interface between oil and water and a pore-throat connectingduring a water displacement process, an initial continuous oil phase can be snapped off in the water-wet pore

Keywords： VOF pore scale immiscible displacement EOR snap-off Ca

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Influence of pore size and membrane surface properties on arsenic removal by nanofiltration membranes

Nathalie Tanne, Rui Xu, Mingyue Zhou, Pan Zhang, Xiaomao Wang, Xianghua Wen

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 2, doi: 10.1007/s11783-019-1105-8

Abstract: itemcontent>

Rejection of arsenate had no relationship with membrane pore

Keywords： Arsenate Nanofiltration Drinking water Membrane property Membrane fouling

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Structure creation in earthen construction materials: information from dry soil mixtures

Christopher BECKETT, Charles AUGARDE

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2, Pages 151-159 doi: 10.1007/s11709-011-0109-7

Abstract: There is increasing interest in the use of earthen construction materials, such as rammed earth, due to their inherent sustainability. These materials have been used by man for thousands of years and some of the earliest examples can be found in China. Features of the structures of these materials arise from the means of production. In particular, in situ earthen construction materials exhibit strong anisotropy due to their layered nature. A more subtle structure effect arises from the way that the earth mixture is deposited. This paper reviews and discusses stratification effects in dry soil mixtures, including some original experimental work, and indicates some links between the features of the dry mixtures and earthen construction materials. Improved understanding of the physical processes in play will allow more accurate specification of these materials in the future, and hence spread their use.

Keywords： rammed earth stratification particle size distribution pore size distribution

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Coupling the porous conditional moment closure with the random pore model: applications to gasification

D. N. SAULOV, C. R. CHODANKA, M. J. CLEARY, A. Y. KLIMENKO

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1, Pages 84-93 doi: 10.1007/s11705-011-1164-2

Abstract: Both coal and sorbent are materials that have complicated pore structures.(PCMC) model proves to be adequate for modeling reactive transport through porous media with fixed poreIn both cases the pore structures are affected.given by the widely applied random pore model (RPM), while coupling PCMC with RPM.Such coupling allows taking into account changes in pore structure caused by heterogeneous reactions

Keywords： gasification CO₂ capture PCMC RPM

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Confinement effects in methanol to olefins catalysed by zeolites: A computational review

German Sastre

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1, Pages 76-89 doi: 10.1007/s11705-016-1557-3

Abstract: Small pore zeolites, containing 8-rings as the largest, are widely employed as catalysts in the processSmall pore zeolites and silicon-aluminophosphates(SAPOs) containing cavities, where olefins are mainly

Keywords： small pore zeolites SAPOs methanol-to-olefins hydrocarbon pool mechanism alkylation of polymethylbenzenes

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Pore structure of cementitious material enhanced by graphitic nanomaterial: a critical review

S.A. GHAHARI, E. GHAFARI, L. ASSI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1, Pages 137-147 doi: 10.1007/s11709-017-0431-9

Abstract: This paper combines a critical review on the effect of CNT on the pore and microstructure of cement compositeIn this scope, this review paper involves analyzing the effect of CNT on the microstructure and the pore

Keywords： carbon nano tubes microstructure porosity mercury intrusion porosimetry cement composite

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Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2, Pages 373-383 doi: 10.1007/s11705-020-1949-2

Abstract: However, with further reaction, disappearance of edge pores, melting and collapse of the pore structure

Keywords： coal char CO₂ gasification internal diffusion pore evolution

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Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6, Pages 1480-1493 doi: 10.1007/s11709-021-0776-y

Abstract: In waterfront geotechnical engineering, seismic and drainage conditions must be considered in the design of retaining structures. This paper proposes a general analytical method to evaluate the seismic active earth pressure on a retaining wall with backfill subjected to partial steady seepage flow under seismic conditions. The method comprises the following steps: i) determination of the total head, ii) upper bound solution of seismic active earth thrust, and iii) deduction for the earth pressure distribution. The determination of total head h(x,z) relies on the Fourier series expansions, and the expressions of the seismic active earth thrust and pressure are derived by using the upper bound theorem. Parametric studies reveal that insufficient drainage and earthquakes are crucial factors that cause unfavorable earth pressure. The numerical results confirm the validity of the total head distribution. Comparisons indicate that the proposed method is consistent with other relevant existing methods in terms of predicting seismic active earth pressure. The method can be applied to the seismic design of waterfront retaining walls.

Keywords： seismic active earth pressure partial seepage flow pore pressure anisotropy upper bound theorem

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Title Author Date Type Operation

Analyzing the characterization of pore structures and permeability of diesel contaminated clays under

Journal Article

Catalyst particle shapes and pore structure engineering for hydrodesulfurization and hydrodenitrogenation

Journal Article

Uncoupled state space solution to layered poroelastic medium with anisotropic permeability and compressible pore

Zhiyong AI, Wenze ZENG, Yichong CHENG, Chao WU

Journal Article

Influence of pore structure on biologically activated carbon performance and biofilm microbial characteristics

Journal Article

Effect of catalyst layer mesoscopic pore-morphology on cold start process of PEM fuel cells

Ahmed Mohmed DAFALLA, Fangming JIANG

Journal Article

polybenzoxazine-based carbon microspheres with nitrogen functionalities: Effects of mixed solvents on pore

Uthen Thubsuang, Suphawadee Chotirut, Apisit Thongnok, Archw Promraksa, Mudtorlep Nisoa, Nicharat Manmuanpom, Sujitra Wongkasemjit, Thanyalak Chaisuwan

Journal Article

Applications of atomic force microscopy in immunology

Jiping Li, Yuying Liu, Yidong Yuan, Bo Huang

Journal Article

Pore-scale simulation of water/oil displacement in a water-wet channel

Jin Zhao, Guice Yao, Dongsheng Wen

Journal Article

Influence of pore size and membrane surface properties on arsenic removal by nanofiltration membranes

Nathalie Tanne, Rui Xu, Mingyue Zhou, Pan Zhang, Xiaomao Wang, Xianghua Wen

Journal Article

Structure creation in earthen construction materials: information from dry soil mixtures

Christopher BECKETT, Charles AUGARDE