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Structural behavior of intermediate length cold-formed steel rack columns with C-stitches

M. ANBARASU, Mahmud ASHRAF

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 937-949 doi: 10.1007/s11709-019-0528-4

Abstract: This article presents an experimental and numerical investigation on the strength and performance of intermediatelength rack column sections with C-stitches under axial compression.The test program consisted of 10 axial concentric compression tests on columns with and without C-stitchesused to carry out a parametric study to examine changes in structural response due to variations in lengthObserved influences of C-stitches on the behavior and resistance of the considered columns were carefully

Keywords： cold-formed steel columns     C-stitches     intermediate length columns     distortional buckling    

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Review of the LNG intermediate fluid vaporizer and its heat transfer characteristics

Frontiers in Energy 2022, Volume 16, Issue 3,   Pages 429-444 doi: 10.1007/s11708-021-0747-y

Abstract: The intermediate fluid vaporizer (IFV), different from other liquefied natural gas (LNG) vaporizers,including the structural innovation design, the thermal calculation model, and the selection of different intermediatetransfer behaviors of the supercritical LNG inside the tubes and the condensation heat transfer of the intermediatethermal calculations of the IFV, the selections of the existing heat transfer correlations about the intermediate

Keywords： intermediate fluid vaporizer     design of structure and intermediate fluid     condensation heat transfer    

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Simulation of performance of intermediate fluid vaporizer under wide operation conditions

Bojie WANG, Wen WANG, Chao QI, Yiwu KUANG, Jiawei XU

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 452-462 doi: 10.1007/s11708-020-0681-4

Abstract: The intermediate fluid vaporizer (IFV) is a typical vaporizer of liquefied natural gas (LNG), which inLNG is heated by seawater and the intermediate fluid in these heat exchangers.

Keywords： liquefied natural gas     intermediate fluid vapo-rizer     heat transfer performance     numerical simulation     extreme    

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A new approach for scheduling of multipurpose batch processes with unlimited intermediate storage policy

Nikolaos Rakovitis, Nan Zhang, Jie Li, Liping Zhang

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 784-802 doi: 10.1007/s11705-019-1858-4

Abstract: The increasing demand of goods, the high competitiveness in the global marketplace as well as the need to minimize the ecological footprint lead multipurpose batch process industries to seek ways to maximize their productivity with a simultaneous reduction of raw materials and utility consumption and efficient use of processing units. Optimal scheduling of their processes can lead facilities towards this direction. Although a great number of mathematical models have been developed for such scheduling, they may still lead to large model sizes and computational time. In this work, we develop two novel mathematical models using the unit-specific event-based modelling approach in which consumption and production tasks related to the same states are allowed to take place at the same event points. The computational results demonstrate that both proposed mathematical models reduce the number of event points required. The proposed unit-specific event-based model is the most efficient since it both requires a smaller number of event points and significantly less computational time in most cases especially for those examples which are computationally expensive from existing models.

Keywords： scheduling     multipurpose batch processes     simultaneous transfer     mixed-integer linear programming    

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Dynamic response of precast segmental bridge columns under heavy truck impact

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 327-349 doi: 10.1007/s11709-023-0911-z

Abstract: Considering the wide application of precast segmental bridge columns (PSBCs) in engineering practice,

Keywords： precast segmental bridge columns     heavy truck     collision     dynamic response    

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Behaviors of recycled aggregate concrete-filled steel tubular columns under eccentric loadings

Vivian W. Y. TAM, Jianzhuang XIAO, Sheng LIU, Zixuan CHEN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 628-639 doi: 10.1007/s11709-018-0501-7

Abstract: The paper investigates the behaviors of recycled aggregate concrete-filled steel tubular (RACFST) columnsA total of 16 RACFST columns were tested in this study.Experimental results showed that the ultimate stresses of RACFST columns decreased with increasing recycledreduce the decrement; the incorporation of expansive agent decreased the ultimate stresses of RACFST columnsand has more effect than that of the normal aggregate concrete-filled steel tubular columns.

Keywords： concrete filled steel tubes     recycled aggregate concrete     columns     expansive agent     eccentric load    

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Shear-critical reinforced concrete columns under various loading rates

Witarto WITARTO,Liang LU,Rachel Howser ROBERTS,Y. L. MO,Xilin LU

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 362-372 doi: 10.1007/s11709-014-0083-y

Abstract: This paper presents an experimental study of shear-governed reinforced concrete columns subjected toFour typical short columns were tested cyclically with loading rate of 0.05, 1, 3, and 5 Hz, simulatingFinally, a finite element analytical model was constructed to describe the behavior of short columns

Keywords： reinforced concrete columns     shear failure     loading rate     Carbon Nano-Fiber Aggregates (CNFAs)     finite element    

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Effects of slip length and hydraulic diameter on hydraulic entrance length of microchannels with superhydrophobic

Wenchi GONG, Jun SHEN, Wei DAI, Zeng DENG, Xueqiang DONG, Maoqiong GONG

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 127-138 doi: 10.1007/s11708-020-0661-8

Abstract: This paper investigated effects of slip length and hydraulic diameter on the hydraulic entrance lengthIt is found that superhydrophobic microchannels have a longer hydraulic entrance length than that ofThe dimensionless hydraulic entrance length slightly increases with the increasing slip length at approximatelyA new correlation to predict the entrance length in square microchannels with different slip lengths

Keywords： laminar flow     hydraulic entrance length     super hydrophobic surface     slip length     hydraulic diameter    

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Modelling and experimental verification on concrete-filled steel tubular columns with L or T section

LU Xilin, LI Xueping, WANG Dan

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 163-169 doi: 10.1007/s11709-007-0017-z

Abstract: Concrete-filled steel tubular columns with L or T sections were analyzed in this paper.applied in the program of time history analysis on tall buildings with concrete-filled steel tubular columns

Keywords： hysteretic     confining mechanism     Concrete-filled     in-filled     composite    

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Efficiency measurement for mixed two-stage nonhomogeneous network processes with shared extra intermediate

Qingxian AN, Xuyang LIU, Shijie DING

Frontiers of Engineering Management 2020, Volume 7, Issue 2,   Pages 259-274 doi: 10.1007/s42524-019-0080-x

Abstract: This method aims to reasonably define the allocation portion of shared extra intermediate resources among

Keywords： shared resource allocation     mixed two-stage system     data envelopment analysis     efficiency    

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Enhanced empirical models for predicting the drift capacity of less ductile RC columns with flexural,

Mohammad Reza AZADI KAKAVAND, Reza ALLAHVIRDIZADEH

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1251-1270 doi: 10.1007/s11709-019-0554-2

Abstract: Hence, developing precise tools for predicting drift capacities of reinforced concrete (RC) columns isRC columns are not only frequently constructed, but also their composite behavior makes the capacitynovel empirical approaches are presented for predicting flexural, shear and axial failure modes in RC columnsIt serves as the basis for deriving the equations for predicting the drift capacity of RC columns by

Keywords： flexural-shear-axial failure     drift capacity     reinforced concrete columns     statistical analysis     fragility    

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Association between telomere length and survival in cancer patients: a meta-analysis and review of literature

Xinsen Xu,Kai Qu,Qing Pang,Zhixin Wang,Yanyan Zhou,Chang Liu

Frontiers of Medicine 2016, Volume 10, Issue 2,   Pages 191-203 doi: 10.1007/s11684-016-0450-2

Abstract:

The relationship between telomere length and cancer survival has been widely studied.A total of 29 studies evaluated telomere length in the peripheral blood; 22 studies evaluated telomerelength in the tumor tissue.First, in the peripheral blood studies, for solid tumor patients with shortened telomere length, thepatients with lower telomere length ratios, the combined HRs were 0.66 (95%CI, 0.53–0.83) and

Keywords： telomere     survival     cancer     meta-analysis    

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Modelling of dynamic contact length in rail grinding process

Shaodan ZHI,Jianyong LI,A. M. ZAREMBSKI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 242-248 doi: 10.1007/s11465-014-0305-y

Abstract: First of all, it’s important to analyze the contact length between the grinding stone and the rail, because the contact length is a critical parameter to measure the grinding capabilities of stones.Therefore the theoretical model for contact length is developed based on the geometrical analysis.

Keywords： rail grinding     contact length     dynamic model     Hamiltonian system     grinding stone     rail grinding car    

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Truss-arch model for shear strength of seismic-damaged SRC frame columns strengthened with CFRP sheets

Sheng PENG, Chengxiang XU, Xiaoqiang LIU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1324-1337 doi: 10.1007/s11709-019-0557-z

Abstract: To investigate the shear strength of SRC frame columns strengthened with CFRP sheets, experimental observationson eight seismic-damaged SRC frame columns strengthened with CFRP sheets were conducted at Yangtze Universityand existing experimental data of 49 SRC columns are presented.To present the expression formula of the shear strength of SRC frame columns strengthened with CFRP sheetsanalysis model can improve the accuracy of shear strength predictions of shear seismic-damaged SRC frame columns

Keywords： carbon fiber reinforced polymer material     steel reinforced concrete frame column     seismic-damaged     trussed-arch model     shear strength    

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Axial compression tests and numerical simulation of steel reinforced recycled concrete short columns

Hui MA; Fangda LIU; Yanan WU; Xin A; Yanli ZHAO

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 7,   Pages 817-842 doi: 10.1007/s11709-022-0844-y

Abstract: To research the axial compression behavior of steel reinforced recycled concrete (SRRC) short columnsconfined by carbon fiber reinforced plastics (CFRP) strips, nine scaled specimens of SRRC short columnsFurthermore, the finite element model of columns which can consider the adverse influence of RCA and0 to 100%, the bearing capacity of columns decreased by only 4.8%., the maximum increase was 10.5% or 11.4%, and the ductility of columns was significantly enhanced.

Keywords： steel reinforced recycled concrete     CFRP strips     short columns     axial compression behavior     recycled    

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Title Author Date Type Operation

Structural behavior of intermediate length cold-formed steel rack columns with C-stitches

M. ANBARASU, Mahmud ASHRAF

Journal Article

Review of the LNG intermediate fluid vaporizer and its heat transfer characteristics

Journal Article

Simulation of performance of intermediate fluid vaporizer under wide operation conditions

Bojie WANG, Wen WANG, Chao QI, Yiwu KUANG, Jiawei XU

Journal Article

A new approach for scheduling of multipurpose batch processes with unlimited intermediate storage policy

Nikolaos Rakovitis, Nan Zhang, Jie Li, Liping Zhang

Journal Article

Dynamic response of precast segmental bridge columns under heavy truck impact

Journal Article

Behaviors of recycled aggregate concrete-filled steel tubular columns under eccentric loadings

Vivian W. Y. TAM, Jianzhuang XIAO, Sheng LIU, Zixuan CHEN

Journal Article

Shear-critical reinforced concrete columns under various loading rates

Witarto WITARTO,Liang LU,Rachel Howser ROBERTS,Y. L. MO,Xilin LU

Journal Article

Effects of slip length and hydraulic diameter on hydraulic entrance length of microchannels with superhydrophobic

Wenchi GONG, Jun SHEN, Wei DAI, Zeng DENG, Xueqiang DONG, Maoqiong GONG

Journal Article

Modelling and experimental verification on concrete-filled steel tubular columns with L or T section

LU Xilin, LI Xueping, WANG Dan

Journal Article

Efficiency measurement for mixed two-stage nonhomogeneous network processes with shared extra intermediate

Qingxian AN, Xuyang LIU, Shijie DING

Journal Article

Enhanced empirical models for predicting the drift capacity of less ductile RC columns with flexural,

Mohammad Reza AZADI KAKAVAND, Reza ALLAHVIRDIZADEH

Journal Article

Association between telomere length and survival in cancer patients: a meta-analysis and review of literature

Xinsen Xu,Kai Qu,Qing Pang,Zhixin Wang,Yanyan Zhou,Chang Liu

Journal Article

Modelling of dynamic contact length in rail grinding process

Shaodan ZHI,Jianyong LI,A. M. ZAREMBSKI

Journal Article

Truss-arch model for shear strength of seismic-damaged SRC frame columns strengthened with CFRP sheets

Sheng PENG, Chengxiang XU, Xiaoqiang LIU

Journal Article

Axial compression tests and numerical simulation of steel reinforced recycled concrete short columns

Hui MA; Fangda LIU; Yanan WU; Xin A; Yanli ZHAO

Journal Article