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Running train induced vibrations and noises of elevated railway structures and their influences on environment

He XIA, Fei GAO, Xuan WU, Nan ZHANG, Guido DE ROECK, Geert DEGRANDE

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 9-17 doi: 10.1007/s11709-009-0010-9

Abstract: The vibrations and noises of elevated railway structures have been cause for concern due to their effectson the environment and the people living near elevated lines.In this paper, the main structural features of some new elevated bridges and station hall were introducedThe noise induced by different types of elevated bridges, their influences on the environment and thetheoretical method for the analysis of structure borne noise was analyzed.

Keywords： railway     elevated structure     bridge     station     vibration     noise     environment    

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Responses of microbial interactions to elevated salinity in activated sludge microbial community

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 5, doi: 10.1007/s11783-023-1660-x

Abstract:

● Salinity led to the elevation of NAR over 99.72%.

Keywords： Elevated salinity     Activated sludge system     Pollution removal     Microbial interactions     Competitive relationship    

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Dynamic analysis of rail transit elevated bridge with ladder track

He XIA, Yushu DENG, Yongwei ZOU, Guido DE ROECK, Geert DEGRANDE

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 2-8 doi: 10.1007/s11709-009-0001-x

Abstract: In this paper, a dynamic analysis model of an elevated bridge with ladder tracks under moving train loadThe whole process of a train running through an elevated bridge at different speeds is simulated.The dynamic responses of the elevated bridge with ladder track and the running safety and comfort indexCompared with the dynamic responses of an elevated bridge with ordinary non-ballasted slab track, theladder track’s effect on reducing the vibration of an elevated bridge is analyzed.

Keywords： rail transit     elevated bridge     ladder track     dynamic response    

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Experimental and kinetic study on laminar flame speeds of ammonia/syngas/air at a high temperature and elevated

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 263-276 doi: 10.1007/s11708-021-0791-7

Abstract: The laminar flame speeds of ammonia mixed with syngas at a high pressure, temperature, and different syngas ratios were measured. The data obtained were fitted at different pressures, temperatures, syngas ratios, and equivalence ratios. Four kinetic models (the Glarborg model, Shrestha model, Mei model, and Han model) were compared and validated with experimental data. Pathway, sensitivity and radical pool analysis are conducted to find out the deep kinetic insight on ammonia oxidation and NO formation. The pathway analysis shows that H abstraction reactions and NHi combination reactions play important roles in ammonia oxidation. NO formation is closely related to H, OH, the O radical produced, and formation reactions. NO is mainly formed from reaction, HNO+ H= NO+ H2. Furthermore, both ammonia oxidation and NO formation are sensitive to small radical reactions and ammonia related reactions.

Keywords： ammonia mixed with syngas     laminar flame speed     kinetic model     sensitivity analysis     pathway analysis    

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Deflection behavior of a prestressed concrete beam reinforced with carbon fibers at elevated temperatures

Mohammed FARUQI, Mohammed Sheroz KHAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 81-91 doi: 10.1007/s11709-018-0468-4

Abstract: However, the behavior of such members under the influence of elevated temperatures is still unknown.examines the deflection behavior of the carbon fiber reinforced polymer(CFRP) prestressed concrete beam at elevatedelement mode (FEM) of a simply supported concrete beam prestressed with CFRP subjected to practical elevated

Keywords： FRP     CFRP     concrete     elevated temperatures     deflections     prestress    

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Elevated temperature creep model of parallel wire strands

Frontiers of Structural and Civil Engineering   Pages 1060-1071 doi: 10.1007/s11709-023-0981-y

Abstract: is no existing approach to analyze their creep behavior, this study experimentally investigated the elevatedcharge-coupled camera system was incorporated to accurately obtain the deformation of the specimen during the elevatedBy comparing the elevated temperature creep test results for PWSs and steel strands, it was found that

Keywords： parallel wire strands     experimental study     elevated temperature creep model    

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Influence of loading ratio on flat slab connections at elevated temperature: A numerical study

Rwayda Kh. S. AL-HAMD, Martin GILLIE, Safaa Adnan MOHAMAD, Lee S. CUNNINGHAM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 664-674 doi: 10.1007/s11709-020-0620-9

Abstract: imposed loading during their service life and it is important to understand the likely response at elevated

Keywords： concrete     finite elements     fire     load-induced thermal strain     punching shear    

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Experimental study on behavior of mortar-aggregate interface after elevated temperatures

Wan WANG, Jianzhuang XIAO, Shiying XU, Chunhui WANG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2,   Pages 158-168 doi: 10.1007/s11709-016-0374-6

Abstract: designed and conducted to study the meso-scale behavior of mortar-aggregate interface for concrete after elevatedThe MCs and MRACs were designed with different strength grade of mortar and were exposed to different elevatedIt is found that failure modes significantly depended on specimen type, the elevated temperature andFor MC, major cracks started to propagate along the initial cracks caused by elevated temperatures atFor MRAC, the cracks appeared at a lower level of load with the increasing elevated temperatures.

Keywords： mortar-aggregate interface     push-out test     elevated temperatures     modeled concrete (MC)     modeled recycled    

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Characterization of CANON reactor performance and microbial community shifts with elevated COD/N ratios

Yao Zhang, Yayi Wang, Yuan Yan, Haicheng Han, Min Wu

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1095-6

Abstract:

COD/N at low ratios (0–0.82) improved N removals of CANON.

CANON performance decreased after COD/N up to 0.82.

The relative abundance of AOB decreased continuously with increasing COD/N.

AOB outcompeted at a high COD load led to CANON failure.

The relative abundance of AnAOB decreased and increased with increasing COD/N.

Keywords： CANON process     COD/N ratio     Anammox     Ammonia oxidizing bacteria     Aerobic heterotrophic bacteria    

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New definition of metabolic dysfunction-associated fatty liver disease with elevated brachial-ankle pulse

Frontiers of Medicine 2022, Volume 16, Issue 5,   Pages 714-722 doi: 10.1007/s11684-021-0888-8

Abstract: particularly its discordance from non-alcoholic fatty liver disease (NAFLD), with the progression of elevatedAfter 4.3 years of follow-up, 778 participants developed elevated baPWV and 499 developed albuminuriacomparison with the non-MAFLD group, the multivariable adjusted odds ratio (OR) of MAFLD group for new-onset elevatedwith MAFLD with high value of hepamet fibrosis score or poor-controlled diabetes had higher risk of elevatedIn conclusion, MAFLD was associated with new-onset elevated baPWV and albuminuria independently of body

Keywords： metabolic dysfunction-associated fatty liver disease     non-alcoholic fatty liver disease     fibrosis score     brachial-ankle pulse wave velocity     albuminuria    

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Modeling of semi-rigid beam-to-column steel joints under extreme loading

C FANG, B A IZZUDDIN, A Y ELGHAZOULI, D A NETHERCOT

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 3,   Pages 245-263 doi: 10.1007/s11709-013-0215-9

Abstract: In addition, elevated temperature can be considered in the joint model via the degradation of the component

Keywords： semi-rigid joint     component method     ductility     elevated temperature    

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Elevated C-reactive protein levels predict worsening prognosis in Chinese patients with first-onset stroke

Jiangtao YAN, Rutai HUI, Daowen WANG

Frontiers of Medicine 2009, Volume 3, Issue 1,   Pages 30-35 doi: 10.1007/s11684-009-0005-x

Abstract: We hypothesized that elevated levels of hsCRP were associated with worsening prognosis after stroke in

Keywords： C-reactive protein     inflammation     stroke    

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Thermal and energy analysis of a Chinese kang

Zhi ZHUANG, Yuguo LI, Xudong YANG, Bin CHEN, Jiaping LIU,

Frontiers in Energy 2010, Volume 4, Issue 1,   Pages 84-92 doi: 10.1007/s11708-010-0009-x

Abstract: In this paper, a macroscopic smoke flow and heat transfer model of an elevated kang is integrated in

Keywords： Chinese kang     elevated kang     rural house thermal modeling     building energy efficiency     DeST    

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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     Porestructure    

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Hierarchical fractal structure of perfect single-layer graphene

T. Zhang, K. Ding

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 371-382 doi: 10.1007/s11465-013-0279-1

Abstract:

The atomic lattice structure of perfect single-layer graphene that can actually be regarded as a kindof hierarchical fractal structure from the perspective of fractal geometry was studied for the firstThree novel and special discoveries on hierarchical fractal structure and sets were unveiled upon examinationThe interior fractal-type structure was discovered to be the fifth space-filling curve from physicalA fundamental example of a multi-fractal structure was also presented.

Keywords： hierarchical fractal structure     fractal dimension     the fifth space-filling curve     multi-fractal structure    

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Title Author Date Type Operation

Running train induced vibrations and noises of elevated railway structures and their influences on environment

He XIA, Fei GAO, Xuan WU, Nan ZHANG, Guido DE ROECK, Geert DEGRANDE

Journal Article

Responses of microbial interactions to elevated salinity in activated sludge microbial community

Journal Article

Dynamic analysis of rail transit elevated bridge with ladder track

He XIA, Yushu DENG, Yongwei ZOU, Guido DE ROECK, Geert DEGRANDE

Journal Article

Experimental and kinetic study on laminar flame speeds of ammonia/syngas/air at a high temperature and elevated

Journal Article

Deflection behavior of a prestressed concrete beam reinforced with carbon fibers at elevated temperatures

Mohammed FARUQI, Mohammed Sheroz KHAN

Journal Article

Elevated temperature creep model of parallel wire strands

Journal Article

Influence of loading ratio on flat slab connections at elevated temperature: A numerical study

Rwayda Kh. S. AL-HAMD, Martin GILLIE, Safaa Adnan MOHAMAD, Lee S. CUNNINGHAM

Journal Article

Experimental study on behavior of mortar-aggregate interface after elevated temperatures

Wan WANG, Jianzhuang XIAO, Shiying XU, Chunhui WANG

Journal Article

Characterization of CANON reactor performance and microbial community shifts with elevated COD/N ratios

Yao Zhang, Yayi Wang, Yuan Yan, Haicheng Han, Min Wu

Journal Article

New definition of metabolic dysfunction-associated fatty liver disease with elevated brachial-ankle pulse

Journal Article

Modeling of semi-rigid beam-to-column steel joints under extreme loading

C FANG, B A IZZUDDIN, A Y ELGHAZOULI, D A NETHERCOT

Journal Article

Elevated C-reactive protein levels predict worsening prognosis in Chinese patients with first-onset stroke

Jiangtao YAN, Rutai HUI, Daowen WANG

Journal Article

Thermal and energy analysis of a Chinese kang

Zhi ZHUANG, Yuguo LI, Xudong YANG, Bin CHEN, Jiaping LIU,

Journal Article

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

Journal Article

Hierarchical fractal structure of perfect single-layer graphene

T. Zhang, K. Ding

Journal Article