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Metal-organic framework-based CO

Yujie Ban, Meng Zhao, Weishen Yang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 2,   Pages 188-215 doi: 10.1007/s11705-019-1872-6

Abstract: targets secondary building units, pore structure, topology and hybridization and (ii) construction of crack-freemembranes through chemical epitaxy growth of active building blocks, interfacial assembly, ultrathin

Keywords： CO2 capture     CO2-philic MOFs     crack-free membranes    

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Full-band error control and crack-free surface fabrication techniques for ultra-precision fly cutting

F. H. ZHANG, S. F. WANG, C. H. AN, J. WANG, Q. XU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 2,   Pages 193-202 doi: 10.1007/s11465-017-0448-8

Abstract:

Large-aperture potassium dihydrogen phosphate (KDP) crystals are widely used in the laser path of inertial confinement fusion (ICF) systems. The most common method of manufacturing half-meter KDP crystals is ultra-precision fly cutting. When processing KDP crystals by ultra-precision fly cutting, the dynamic characteristics of the fly cutting machine and fluctuations in the fly cutting environment are translated into surface errors at different spatial frequency bands. These machining errors should be suppressed effectively to guarantee that KDP crystals meet the full-band machining accuracy specified in the evaluation index. In this study, the anisotropic machinability of KDP crystals and the causes of typical surface errors in ultra-precision fly cutting of the material are investigated. The structures of the fly cutting machine and existing processing parameters are optimized to improve the machined surface quality. The findings are theoretically and practically important in the development of high-energy laser systems in China.

Keywords： ultra-precision fly cutting     large-aperture KDP crystals     spatial frequency     processing error    

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Feasibility of crack free reinforced concrete bridge deck from materials composition perspective: a state

Mahdi AREZOUMANDI

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 1,   Pages 91-103 doi: 10.1007/s11709-015-0274-1

Abstract: To design an appropriate mixture for crack free bridge deck, it is important to study previous researches

Keywords： bridge deck     crack     fiber     shrinkage     shrinkage reducing admixture    

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A hypothesis for crack free interior surfaces of Longyou caverns caved in argillaceous siltstone 2000

Zhong Qi YUE, Shaopeng FAN, Zhifa YANG, Lihui LI, Luqing ZHANG, Zhongjian ZHANG,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2,   Pages 165-177 doi: 10.1007/s11709-010-0018-1

Abstract: they were un-watered, their integrity was maintained completely, and their interior rock surfaces were freeThis paper attempts to address the question of why the rock interior faces were free of old cracks onceThe new minerals would be able to infill the cracks and then heal the crack within a few years.Once the crack is self-healed, the rock can regain its strength and integrity.Consequently, the rock interior surfaces could be free of old cracks when the water was pumped out of

Keywords： rock cavern     grotto     Longyou     argillaceous siltstone     crack     water     environment     self-healing    

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Recovery of free volume in PIM-1 membranes through alcohol vapor treatment

Faiz Almansour, Monica Alberto, Rupesh S. Bhavsar, Xiaolei Fan, Peter M. Budd, Patricia Gorgojo

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 4,   Pages 872-881 doi: 10.1007/s11705-020-2001-2

Abstract: Physical aging is currently a major obstacle for the commercialization of PIM-1 membranes for gas separationA well-known approach to reversing physical aging effects of PIM-1 membranes at laboratory scale is soakingmethod with alcohol vapors (ethanol or methanol) was developed to recover permeability of aged PIM-1 membranes

Keywords： polymer of intrinsic microporosity (PIM)     PIM-1     physical aging     gas separation     vapor-phase regeneration    

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Dynamic crack propagation in plates weakened by inclined cracks: an investigation based on peridynamics

A. SHAFIEI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 527-535 doi: 10.1007/s11709-018-0450-1

Abstract: In this paper by using peridynamics, the crack path for inclined crack under dynamic loading were investigatedThe peridynamics solution for this problem represents the main features of dynamic crack propagationsuch as crack bifurcation.In addition, the influence of geometry on inclined crack growth is studied.

Keywords： peridynamics     inclined crack     dynamic fracture     crack branching    

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Advancing ion-exchange membranes to ion-selective membranes: principles, status, and opportunities

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 2, doi: 10.1007/s11783-023-1625-0

Abstract:

● IEM ion/ion selectivities of charge, valence, & specific ion are critically assessed.

Keywords： Ion-exchange membranes     Selectivity     Separations    

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Imprinted membranes for sustainable separation processes

Laura Donato, Enrico Drioli

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 4,   Pages 775-792 doi: 10.1007/s11705-020-1991-0

Abstract: perspective, a relevant input was given by the membrane-based technology and the production of imprinted membranesFurthermore, the integration of imprinted membranes with traditional or membrane-based approaches isThis work discusses the concept and separation mechanisms of imprinted membranes.Finally, potential applications of imprinted membranes in hybrid processes are highlighted, and a look

Keywords： sustainable processes     membrane separation     molecular recognition     imprinted membranes     water treatment    

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Peridynamics versus XFEM: a comparative study for quasi-static crack problems

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 548-557 doi: 10.1007/s11709-017-0434-6

Abstract: However, capturing of complex mixed-mode crack patterns has been proven to be difficult with PD.extended finite element method (XFEM) is one of the most popular methods for fracture which allows crackThe first example is crack propagation in a double notched specimen under uniaxial tension with differentcrack spacings in loading direction.

Keywords： XFEM     peridynamic     bilateral crack     parallel double cracks     nonlocal theory    

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Correlation between tension softening relation and crack extension resistance in concrete

Xiufang ZHANG , Shilang XU ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 323-329 doi: 10.1007/s11709-009-0041-2

Abstract: Changes of the material fracture energy consumption with crack propagation can be described by a crackextension resistance curve, one of the fundamental fracture criteria in crack mechanics.observation of the fracture behavior in concrete was used to develop a new fracture criterion, the crackextension resistance curve, to analyze crack propagation during the entire concrete fracture processfracture process zone ahead of the stress-free crack tip.

Keywords： concrete     fracture process zone     crack extension GR resistance     tension softening curve    

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Fracture resistance on aggregate bridging crack in concrete

ZHANG Xiufang, XU Shilang

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 63-70 doi: 10.1007/s11709-007-0006-2

Abstract: action of aggregate bridging, which leads to the presence of a fracture process zone ahead of stress-freeUtilizing the obtained load against crack opening displacement curve, the value of G at any crack extensionas well as the change of G with the crack extension is examined.It is found that G will firstly increase with the development of crack and then stay constant once theinitial crack tip opening displacement reaches the characteristic crack opening displacement w0.
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Stability and dynamics of rotor system with 45° slant crack on shaft

Yanli LIN, Xiaohui SI, Fulei CHU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 203-213 doi: 10.1007/s11465-011-0131-4

Abstract:

Crack on a shaft is one of the common damages in a rotor system.slant crack on the rotor system.is larger than that with a transverse crack when the two types of crack have the same depth and thetorsional excitation are analyzed by considering opening and closing of the crack.on a shaft and can be used for the detection of the slant crack on a shaft.

Keywords： rotor dynamics     slant crack     stability     torsional excitation     open and close    

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Study on the cohesion and adhesion of hot-poured crack sealants

Meng GUO, Yiqiu TAN, Xuesong DU, Zhaofeng LV

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 353-359 doi: 10.1007/s11709-017-0400-3

Abstract: Filling crack sealant is a main method to repair cracking of pavement.The cohesion and adhesion of crack sealant directly determine its service performance and durability.This research proposed two methods to evaluate cohesion and adhesion of crack sealant, and analyzed theThe effect of moisture on low-temperature performance of crack sealant was also be evaluated by conductingfor 24 hours will decrease the failure energy of low-temperature tension and damage the durability of crack

Keywords： crack sealant     concrete pavement     cohesion     adhesion     moisture damage    

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Bioinspired and biomimetic membranes for water purification and chemical separation: A review

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1412-8

Abstract:

•The history of biological and artificial water channels is reviewed.

Keywords： Aquaporins     Artificial water channels     Biomimetic membranes     Chemical separation and water purification    

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Surface modification techniques of membranes to improve their antifouling characteristics: recent advancements

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1837-1865 doi: 10.1007/s11705-023-2347-3

Abstract: Surface modification techniques of membranes to improve their antifouling characteristics: recent advancements

Keywords： Surface modification techniques    

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Title Author Date Type Operation

Metal-organic framework-based CO

Yujie Ban, Meng Zhao, Weishen Yang

Journal Article

Full-band error control and crack-free surface fabrication techniques for ultra-precision fly cutting

F. H. ZHANG, S. F. WANG, C. H. AN, J. WANG, Q. XU

Journal Article

Feasibility of crack free reinforced concrete bridge deck from materials composition perspective: a state

Mahdi AREZOUMANDI

Journal Article

A hypothesis for crack free interior surfaces of Longyou caverns caved in argillaceous siltstone 2000

Zhong Qi YUE, Shaopeng FAN, Zhifa YANG, Lihui LI, Luqing ZHANG, Zhongjian ZHANG,

Journal Article

Recovery of free volume in PIM-1 membranes through alcohol vapor treatment

Faiz Almansour, Monica Alberto, Rupesh S. Bhavsar, Xiaolei Fan, Peter M. Budd, Patricia Gorgojo

Journal Article

Dynamic crack propagation in plates weakened by inclined cracks: an investigation based on peridynamics

A. SHAFIEI

Journal Article

Advancing ion-exchange membranes to ion-selective membranes: principles, status, and opportunities

Journal Article

Imprinted membranes for sustainable separation processes

Laura Donato, Enrico Drioli

Journal Article

Peridynamics versus XFEM: a comparative study for quasi-static crack problems

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Journal Article

Correlation between tension softening relation and crack extension resistance in concrete

Xiufang ZHANG , Shilang XU ,

Journal Article

Fracture resistance on aggregate bridging crack in concrete

ZHANG Xiufang, XU Shilang

Journal Article

Stability and dynamics of rotor system with 45° slant crack on shaft

Yanli LIN, Xiaohui SI, Fulei CHU

Journal Article

Study on the cohesion and adhesion of hot-poured crack sealants

Meng GUO, Yiqiu TAN, Xuesong DU, Zhaofeng LV

Journal Article

Bioinspired and biomimetic membranes for water purification and chemical separation: A review

Journal Article

Surface modification techniques of membranes to improve their antifouling characteristics: recent advancements

Journal Article