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Research of the Relation Between Chemical Bonding Parameters and Difference in Atomic Size Ratios and

Cai Anhui,Pan Ye,Sun Guoxiong

Strategic Study of CAE 2004, Volume 6, Issue 7,   Pages 81-87

Abstract:

Three physical parameters such as the difference in atomic size ratios (△d), the difference of atomicThe relation between the three related parameters and Rc was determined by using Origin, theof additive elements may be related to the minimum phenomena of the relation between three related parameters

Keywords： chemical bond parameters     difference of atomic size ratio     bulk metallic glasses     glass forming ability    

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Calculation of H2+ Structural Parameters based on Hydrogen Atomic Protonized Model

Chen Jing

Strategic Study of CAE 2004, Volume 6, Issue 11,   Pages 29-32

Abstract: protonized model was introduced in present paper for calculation of H2+ structural parametersThree formulas deduced from above model for bond-length, bond-energy and force constant of hydrogen molecule

Keywords： hydrogen molecule ion     bond-length     bond-energy     force constant    

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Effect of embedment length of untreated natural fibres on the bond behaviour in cement mortar

Gudimella RAMAKRISHNA, Sriraman PRIYADHARSHINI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 454-460 doi: 10.1007/s11709-017-0454-2

Abstract: effects of various matrices with 1:3, 1:4 and 1:5 mortars and fibre types of sisal and coir on the bondThe other parameters included in the investigation are water/cement (w/c) ratio, sand gradation and embedmentFrom the results, it is seen that the bond strength is improving with respect to age of curing in caseThe other varying parameters such as mortar mixes, sand gradation, w/c ratio and embedded length alsoshowed significant effect on bond behaviour of sisal and coir fibre with the cement mortar mixes.

Keywords： bond strength     cement mortar     natural fibre     pullout test     type of failure    

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Study of bond strength between various grade of Ordinary Portland Cement (OPC) and Portland Pozzolane

A D POFALE, S P WANJARI

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1,   Pages 39-45 doi: 10.1007/s11709-013-0193-y

Abstract: But, till to date, a few literature is available on bond strength of concrete using PPC mixes.Hence, a comparative study was conducted on bond strength between OPC and PPC mixes.observed at 0.25 mm slip at loaded end called as critical bond stress and at maximum bond load calledas maximum bond stress.Whereas, marginal improvement was noticed in maximum bond strength of PPC mixes.

Keywords： bond strength     Portland Pozzolane Cement (PPC) concrete     Ordinary Portland Cement (OPC) concrete     bond between    

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Calculation of Bond-length, Bond-energy and Force Constant of Hydrogen Molecule by Classical Mechanics

Chen Jing

Strategic Study of CAE 2003, Volume 5, Issue 6,   Pages 39-43

Abstract: Based on the overlap of electron cloud, the ground state hydrogen molecule structural parameters arecalculated with the classical mechanics, and the hydrogen molecule bond-length Re, bonding-energyIn this calculation, hydrogen molecule chemical bonding model is concise and has clear physical meaning, and no any artificial parameters are introduced.

Keywords： hydrogen molecule     bond-length     bond-energy     force constant    

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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 clearlyResults showed a 13 times higher reaction rate for sp3-hybridized C–N bond cleavage than sp2-hybridized C–N bond cleavage, while the reaction rate tended to increase first and thencleavage activity, and the step atoms are the active sites for the C–N bond cleavage.

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

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The effect of carbon nanotubes and polypropylene fibers on bond of reinforcing bars in strain resilient

Souzana P. TASTANI,Maria S. KONSTA-GDOUTOS,Stavroula J. PANTAZOPOULOU,Victor BALOPOULOS

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 2,   Pages 214-223 doi: 10.1007/s11709-016-0332-3

Abstract: bars and concrete is engaged through rib translation relative to concrete, and comprises longitudinal bondreleased upon radial cracking of the cover along the anchorage with commensurate abrupt loss of the bondslip, residual resistance and controlled slippage.The aim of this paper is to investigate the local bondParameters of investigation were the material structure (comprising a basic control mix, reinforced withstrength up to large levels of controlled bar-slip; the elasto-plastic bond response envelope was a

Keywords： carbon nanotubes     strain resilient cementitious composite     polypropylene fibers     tensile bending     bond    

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Effect of bond enhancement using carbon nanotubes on flexural behavior of RC beams strengthened with

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1,   Pages 131-143 doi: 10.1007/s11709-021-0787-8

Abstract: A nonlinear finite element (FE) model was built, validated, and used to study the effect of various parametersThe studied parameters included concrete strength, flexural reinforcement ratio, and CFRP sheet configuration

Keywords： RC beams     flexural     strengthening     CFRP     CNTs     finite element    

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Controllable synthesis of a large TS-1 catalyst for clean epoxidation of a C=C double bond under mild

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 6,   Pages 772-783 doi: 10.1007/s11705-022-2280-x

Abstract: Development of a titanium silicalite-1 (TS-1) catalyst with good crystallinity and a four-coordinate Ti framework is critical for efficient catalytic oxidation reaction under mild conditions. Herein, a size-controlled TS-1 zeolite (TS-1#0.1ACh (acetylcholine)) was synthesized via steam-assisted crystallization by introducing acetylcholine as a crystal growth modifier in the preparation process, and TS-1#0.1ACh was also employed in epoxidations of different substrates containing C=C double bonds. The crystalline sizes of the as-synthesized TS-1#0.1ACh catalysts were controlled with the acetylcholine content, and characterization results showed that the particle sizes of highly crystalline TS-1#0.1ACh zeolite reached 3.0 μm with a good Ti framework. Throughout the synthetic process, the growth rate of the crystals was accelerated by electrostatic interactions between the connected hydroxyl groups of the acetylcholine modifier and the negatively charged skeleton of the pre-zeolites. Furthermore, the TS-1#0.1ACh catalyst demonstrated maximum catalytic activity, good selectivity and high stability during epoxidation of allyl chloride. Importantly, the TS-1#0.1ACh catalyst was also highly versatile and effective with different unsaturated substrates. These findings may provide novel, easily separable and large TS-1 catalysts for efficient and clean industrial epoxidations of C=C double bonds.

Keywords： size-controlled TS-1     crystal modifier     steam-assisted crystallization     epoxidation    

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Prediction of the flash points of alkanes by group bond contribution method using artificial neural networks

PAN Yong, JIANG Juncheng, WANG Zhirong

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 4,   Pages 390-394 doi: 10.1007/s11705-007-0071-z

Abstract: A group bond contribution model using artificial neural networks, which had the high ability of nonlinearA set of 16 group bonds were used as input parameters of neural networks to study the correlation ofpoints and molecular structures of alkanes but also to predict the flash points of organic compounds for chemical

Keywords： information     nonlinear     quantitative correlation     superior     molecular    

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Direct synthesis of carbon nanotubes on fly ash particles to produce carbon nanotubes/fly ash composites

Fangxian LI, Cheng ZHOU, Pengfei YANG, Beihan WANG, Jie HU, Jiangxiong WEI, Qijun YU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1405-1414 doi: 10.1007/s11709-019-0564-0

Abstract: Fly ash was used as catalytic support for carbon nanotubes (CNTs) growth by chemical vapor depositionThe influence of parameters (e.g., reaction temperature and gas flow rate) on the carbon yield and structure

Keywords： carbon nanotubes     fly ash     chemical vapor deposition     parameters     purification    

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Inverse identification of the mechanical parameters of a pipeline hoop and analysis of the effect of

Ye GAO, Wei SUN

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 358-368 doi: 10.1007/s11465-019-0539-9

Abstract: pipeline system effectively and analyze its vibration characteristics, the mechanical characteristic parametersThe procedure of identifying such parameters was described based on the measured natural frequenciesA case study was performed, and the mechanical parameters of the hoop were identified using the proposed

Keywords： inverse identification     pipeline hoop     frequency response function     mechanical parameters     preload    

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Steel Fiber–Matrix Interfacial Bond in Ultra-High Performance Concrete: A Review Review

Yulin Deng,Zuhua Zhang,Caijun Shi,Zemei Wu,Chaohui Zhang

Engineering 2023, Volume 22, Issue 3,   Pages 215-232 doi: 10.1016/j.eng.2021.11.019

Abstract: The steel fiber–matrix interfacial bond is the main factor that governs other mechanical propertiesThis paper presents a comprehensive review on the research progress of fiber–matrix bond behaviorsThe parameters of the fiber–matrix bond, including the geometry and orientation of fibers, surface

Keywords： Ultra-high performance concrete     Interfacial bond     Steel fiber     Pullout behavior    

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Impact of anthropogenic heat emissions on meteorological parameters and air quality in Beijing using

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-021-1478-3

Abstract:

The Large scale Urban Consumption of energ Y model was updated and coupled with WRF.

Keywords： Anthropogenic heat emissions     LUCY     High-resolution     Meteorological parameters     Air quality    

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Effect of thermodynamic parameters on the performance of refrigerator-ejector

Lihong CAO, Yicai LIU, Chao WAN, Tianlong XIN, Qian HUANG, Mingyan ZHANG

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 517-521 doi: 10.1007/s11708-010-0004-2

Abstract: The effect of thermodynamic parameters (the pressure of primary fluid and secondary fluid) on the performanceThe boundary conditions were set according to the actual operating condition and the parameters of refrigerator

Keywords： refrigerator-ejector     FLUENT     thermodynamic parameters     entrainment ratio performance    

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Title Author Date Type Operation

Research of the Relation Between Chemical Bonding Parameters and Difference in Atomic Size Ratios and

Cai Anhui,Pan Ye,Sun Guoxiong

Journal Article

Calculation of H2+ Structural Parameters based on Hydrogen Atomic Protonized Model

Chen Jing

Journal Article

Effect of embedment length of untreated natural fibres on the bond behaviour in cement mortar

Gudimella RAMAKRISHNA, Sriraman PRIYADHARSHINI

Journal Article

Study of bond strength between various grade of Ordinary Portland Cement (OPC) and Portland Pozzolane

A D POFALE, S P WANJARI

Journal Article

Calculation of Bond-length, Bond-energy and Force Constant of Hydrogen Molecule by Classical Mechanics

Chen Jing

Journal Article

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

Journal Article

The effect of carbon nanotubes and polypropylene fibers on bond of reinforcing bars in strain resilient

Souzana P. TASTANI,Maria S. KONSTA-GDOUTOS,Stavroula J. PANTAZOPOULOU,Victor BALOPOULOS

Journal Article

Effect of bond enhancement using carbon nanotubes on flexural behavior of RC beams strengthened with

Journal Article

Controllable synthesis of a large TS-1 catalyst for clean epoxidation of a C=C double bond under mild

Journal Article

Prediction of the flash points of alkanes by group bond contribution method using artificial neural networks

PAN Yong, JIANG Juncheng, WANG Zhirong

Journal Article

Direct synthesis of carbon nanotubes on fly ash particles to produce carbon nanotubes/fly ash composites

Fangxian LI, Cheng ZHOU, Pengfei YANG, Beihan WANG, Jie HU, Jiangxiong WEI, Qijun YU

Journal Article

Inverse identification of the mechanical parameters of a pipeline hoop and analysis of the effect of

Ye GAO, Wei SUN

Journal Article

Steel Fiber–Matrix Interfacial Bond in Ultra-High Performance Concrete: A Review

Yulin Deng,Zuhua Zhang,Caijun Shi,Zemei Wu,Chaohui Zhang

Journal Article

Impact of anthropogenic heat emissions on meteorological parameters and air quality in Beijing using

Journal Article

Effect of thermodynamic parameters on the performance of refrigerator-ejector

Lihong CAO, Yicai LIU, Chao WAN, Tianlong XIN, Qian HUANG, Mingyan ZHANG

Journal Article