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Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 9,   Pages 1326-1340 doi: 10.1007/s11709-023-0014-x

Abstract: Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Keywords： strain relationship concrete    

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Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 9-9 doi: 10.1007/s11465-021-0665-z

Abstract: Gear wear is one of the most common gear failures, which changes the mesh relationship of normal gearA new mesh relationship caused by gear wear affects meshing excitations, such as mesh stiffness and transmissionThis paper aims to establish the model of mesh relationship and reveal the vibration characteristicsA geometric model for a new mesh relationship with gear wear is proposed, which is utilized to evaluateComparison with the experimental results verifies the proposed dynamic model based on the new mesh relationship

Keywords： gear wear     mesh relationship     mesh stiffness     transmission error     vibration characteristics    

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Mapping the structure-activity relationship of

Worawan PANPIPAT, Hasene KESKIN, Zheng GUO

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 1,   Pages 105-113 doi: 10.1007/s11705-015-1502-x

Abstract: The phase behavior of twelve synthesized -sitosteryl fatty acid esters with acyl moieties with different chain lengths (C2:0-C18:0) and different degrees of unsaturation (C18:1-C18:3) were investigated in pure and mixed Langmuir monolayers with phospholipids. The surface-pressure isotherms showed that short chain -sitosteryl fatty acid esters gave smaller mean molecular areas and had decreased monolayer stability and the long chain steryl esters did not produce collapsed plateaus. All the steryl esters displayed strong condensing effects, but there was a pronounced structural dependency: medium chain esters (C8 and C10) were less efficient than short and long chain esters. Atomic force microscopy imaging demonstrated that monolayers mixed with dipalmitoyl phosphatidylcholine (DPPC) displayed both DPPC-rich and steryl lipid-rich domains. However, the height and area differences between the two phases and the roughness and morphologic patterns were very dependent on the steryl lipid concentrations as well as the length, the degree of unsaturation and the molecular conformations of the acyl segments. These findings not only provide a better understanding of the interactions between phytosteryl hydrophobic derivatives and biomembranes, but also may be of general use for the design and engineering of phytosterol structural derivations for specific food and pharmaceutical applications.

Keywords： acid esters     dipalmitoyl phosphatidylcholine     Langmuir monolayer     condensing effect     structure-activity relationship    

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A new modeling approach for stress–strain relationship taking into account strain hardening and stored

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0761-3

Abstract: In this study, a new modeling approach for the stress–strain relationship is proposed by consideringThe parameters in the stress–strain relationship model are solved according to the stored energy underThe consistency between the predicted results from the proposed stress–strain relationship and the experimentalresults shows that the evolution of stored energy can accurately predict the stress–strain relationship

Keywords： stress−strain relationship     microstructure evolution     stored energy     strain hardening     graphite morphology    

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Property-performance relationship of core-shell structured black TiO photocatalyst for environmental

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1711-3

Abstract:

● Properties and performance relationship of CSBT photocatalyst were

Keywords： Black TiO2     Core-shell structure     Property-performance relationship     Agro-industrial effluent    

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Stress-strain relationship with soil structural parameter of collapse loess

SHAO Shengjun, YU Qinggao, LONG Jiyong

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 293-293 doi: 10.1007/s11709-008-0100-0

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Stress-strain relationship with soil structural parameters of collapse loess

SHAO Shengjun, LONG Jiyong, YU Qinggao

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 151-160 doi: 10.1007/s11709-008-0020-z

Abstract: Through the comparative analysis, the stress-strain curves described by the constitutive relationship

Keywords： hardening     shearing expansion     unsaturated     structural property     mathematical expression    

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Relationship between expression of hepatocyte grow factor and apoptosis of trophoblasts in hypertensive

OUYANG Shan, ZHANG Qinghua, QIAO Fuyuan

Frontiers of Medicine 2007, Volume 1, Issue 4,   Pages 386-389 doi: 10.1007/s11684-007-0075-6

Abstract: women and those with hypertensive disorder complicating pregnancy (HDCP), and elucidate the possible relationship

Keywords： pregnancy     concentration     possible relationship     responsible     hepatocyte    

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Stress-strain relationship of concrete in freeze-thaw environment

ZOU Chaoying, ZHAO Juan, LIANG Feng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 184-188 doi: 10.1007/s11709-008-0029-3

Abstract: Adopting the ASTM C666 quick freeze-thaw method, freeze-thaw tests with the number of freeze-thaw cycles being 0, 100, 150, 200, 250, and 300, were carried out on eighteen concrete prism specimens, the frost-resistant level of which, reaches D300 grade. The internal micro-structures of these specimens were observed by means of scanning electron microscopy (SEM) in order to detect damages caused by the freeze-thaw action. Afterwards these frozen-thawed specimens were tested on monotonic axial load; stress-strain testing curves after the freeze-thaw action were obtained. The testing results show that with the increasing time of freeze-thaw cycles, both the internal micro-structures and the basic mechanical parameters, including the ultimate bearing capacity, the Poisson ratio and the modulus of elasticity, degenerate in various degrees. Finally, stress-strain theoretical curvilinear equations and correlated parameters relating to the loss of relative dynamic modulus of elasticity were proposed. These results provide great reference for further research on the behavior and the calculation model of concrete structures in a freeze-thaw environment.

Keywords： stress-strain theoretical     freeze-thaw     capacity     reference     eighteen concrete    

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Stress-strain relationship of recycled self-compacting concrete filled steel tubular column subjected

Feng YU, Cheng QIN, Shilong WANG, Junjie JIANG, Yuan FANG

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 760-772 doi: 10.1007/s11709-020-0618-3

Abstract: In this study, 21 specimens were designed and experimental studies on the stress-strain relationshipThe corresponding stress-strain relationship curves were used to analyze the influence of concerned parameters

Keywords： self-compacting concrete     eccentric compression     recycled coarse aggregate replacement ratio     stress-strain relationship    

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Causality relationship between the photovoltaic market and its manufacturing in China, Germany, the US

Molin HUO, Xiliang ZHANG, Jiankun HE

Frontiers in Energy 2011, Volume 5, Issue 1,   Pages 43-48 doi: 10.1007/s11708-010-0135-5

Abstract: This paper aims to investigate the Granger causality relationships between the photovoltaic (PV) market scale and PV manufacturing development in China, Germany, the US, and Japan, and consequently provide recommendations for strategic investment and industrial policy making. The empirical results show that the growth of the market scale caused the increase in innovation scale in the four countries except China. Moreover, there were bidirectional causalities between them in Germany and in the US, respectively, suggesting that the strategic perspective and the formation of a virtuous circle could make PV industry policies cost effective. Only in China did the growth of the market scale cause the increase in production scale, implying significant market risk for the manufacturing sector. The empirical result shows that the manufacturing sector can affect the dynamics of the market scale.

Keywords： photovoltaic     innovation     demand pull     scale economies     granger causality    

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toolbox for molecular property prediction based on quantum mechanics and quantitative structure-property relationship

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 152-167 doi: 10.1007/s11705-021-2060-z

Abstract: In this paper, a framework combining quantum mechanics and quantitative structure-property relationshipare stored in a database and further provided for the developments of quantitative structure-property relationship

Keywords： molecular property     quantum mechanics     quantitative structure-property relationship     heat of reaction    

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Discuss of several basic problems in the GIS spatial relationship description

Deng Min,Li Chengming,Liu Xiaoli

Strategic Study of CAE 2013, Volume 15, Issue 5,   Pages 20-24

Abstract: justify;">Firstly,it analyzed the concept of space, and then discussed the characters of topological relationship

Keywords： space     topological relationship     representation of spatial relations    

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The change of serum leptin and its relationship with platelet membrane glycoprotein Ib in patients with

XIA Dasheng, SONG Yanqiu, LI Chao, ZHANG Feng, WEI Minxin

Frontiers of Medicine 2007, Volume 1, Issue 4,   Pages 352-355 doi: 10.1007/s11684-007-0067-6

Abstract: The aim of this paper was to investigate the change of serum leptin and its relationship with platelet
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Effect of arsenic trioxide on proliferation and apoptosis of U266 cells and its relationship with the

ZHAN Rong, YU Qinghong, HUANG Haobo

Frontiers of Medicine 2008, Volume 2, Issue 4,   Pages 356-360 doi: 10.1007/s11684-008-0068-0

Abstract: effect of arsenic trioxide (AsO) on the proliferation and apoptosis of myeloma cell line U266 and its relationship

Keywords： VEGF expression     expression variation     culture supernatant     labeling     concentration    

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Title Author Date Type Operation

Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Journal Article

Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear

Journal Article

Mapping the structure-activity relationship of

Worawan PANPIPAT, Hasene KESKIN, Zheng GUO

Journal Article

A new modeling approach for stress–strain relationship taking into account strain hardening and stored

Journal Article

Property-performance relationship of core-shell structured black TiO photocatalyst for environmental

Journal Article

Stress-strain relationship with soil structural parameter of collapse loess

SHAO Shengjun, YU Qinggao, LONG Jiyong

Journal Article

Stress-strain relationship with soil structural parameters of collapse loess

SHAO Shengjun, LONG Jiyong, YU Qinggao

Journal Article

Relationship between expression of hepatocyte grow factor and apoptosis of trophoblasts in hypertensive

OUYANG Shan, ZHANG Qinghua, QIAO Fuyuan

Journal Article

Stress-strain relationship of concrete in freeze-thaw environment

ZOU Chaoying, ZHAO Juan, LIANG Feng

Journal Article

Stress-strain relationship of recycled self-compacting concrete filled steel tubular column subjected

Feng YU, Cheng QIN, Shilong WANG, Junjie JIANG, Yuan FANG

Journal Article

Causality relationship between the photovoltaic market and its manufacturing in China, Germany, the US

Molin HUO, Xiliang ZHANG, Jiankun HE

Journal Article

toolbox for molecular property prediction based on quantum mechanics and quantitative structure-property relationship

Journal Article

Discuss of several basic problems in the GIS spatial relationship description

Deng Min,Li Chengming,Liu Xiaoli

Journal Article

The change of serum leptin and its relationship with platelet membrane glycoprotein Ib in patients with

XIA Dasheng, SONG Yanqiu, LI Chao, ZHANG Feng, WEI Minxin

Journal Article

Effect of arsenic trioxide on proliferation and apoptosis of U266 cells and its relationship with the

ZHAN Rong, YU Qinghong, HUANG Haobo

Journal Article