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High-gravity intensified iron-carbon micro-electrolysis for degradation of dinitrotoluene

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1595-1605 doi: 10.1007/s11705-022-2204-9

Abstract: In order to address this problem, high-gravity intensified Fe–C micro-electrolysis was proposed in thisThe effects of reaction time, high-gravity factor, liquid flow rate and initial solution pH were investigatedIn conclusion, high-gravity intensified Fe–C micro-electrolysis can weaken the passivation of Fe–C particles

Keywords： high-gravity technology     rotating packed bed     Fe–C micro-electrolysis     dinitrotoluene wastewater     active    

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Application of Satellite Gravity Gradiometry Data to the Refinement of the Earth’s Gravity Field

Ning Jinsheng,Luo Zhicai,Chen Yongqi

Strategic Study of CAE 2002, Volume 4, Issue 7,   Pages 23-28

Abstract: is to determine the geoid with centimeter level and to develop the ultra high global earth’s gravityfield model，and for this purpose satellite gravity gradiometry is one of the most promising techniquesThis paper first comments on the main progress of satellite gravity gradiometry, and then discusses sometheories and methods for refining the earth´s gravity field using satellite gravity gradiometry

Keywords： satellite gravity gradiometry     satellite gravity gradiometry boundary value problem     earth's gravity field    

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Stability analysis on Tingzikou gravity dam along deep-seated weak planes during earthquake

Weiping HE, Yunlong HE

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 1,   Pages 69-75 doi: 10.1007/s11709-012-0146-x

Abstract: The stability of a gravity dam against sliding along deep-seated weak planes is a universal and important

Keywords： gravity dam     deep-seated weak planes     stability against sliding     earthquake    

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A comprehensive simulation approach for pollutant bio-transformation in the gravity sewer

Nan Zhao, Huu Hao Ngo, Yuyou Li, Xiaochang Wang, Lei Yang, Pengkang Jin, Guangxi Sun

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 4, doi: 10.1007/s11783-019-1144-1

Abstract:

A comprehensive pollutant transformation model for sewer systems is established.

The model comprises fermentation, sulfate reduction and ammonification processes.

Biochemical reactions related to distinct carbon sources are depicted in the model.

Pollutant transformation is attributed to different biochemical reaction processes.

Keywords： Gravity sewer     Modeling     Pollutant transformation     Biochemical reaction process    

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Evaluation of seismic reliability of gravity dam-reservoir-inhomogeneous foundation coupled system

Hamid Taghavi GANJI, Mohammad ALEMBAGHERI, Mohammad Houshmand KHANEGHAHI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 701-715 doi: 10.1007/s11709-018-0507-1

Abstract: The seismic performance of gravity dam-reservoir-foundation coupled system is investigated utilizingThe methodology is applied to Pine Flat gravity dam and the foundation is considered to be inhomogeneous

Keywords： gravity dams     dam-reservoir-foundation interaction     seismic reliability     inhomogeneous foundation     earthquake    

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mechanism of nitrobenzene degradation by hydroxyl radicals-based ozonation process enhanced by high gravity

Weizhou Jiao, Shengjuan Shao, Peizhen Yang, Kechang Gao, Youzhi Liu

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5,   Pages 1197-1205 doi: 10.1007/s11705-020-1998-6

Abstract: The high gravity technology can accelerate ozone mass transfer and self-decomposition of ozone to produce

Keywords： high gravity technology     hydroxyl radicals     nitrobenzene     reaction kinetics    

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Hazard potential of zones of weakness in gravity dams under impact loading conditions

Herbert LINSBAUER

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1,   Pages 90-97 doi: 10.1007/s11709-010-0008-3

Abstract: Dam constructions worldwide are designed and constructed in view of the strictest safety aspects for all static and dynamic load cases. As experience shows, however, formation of cracks in the “homogeneos concrete” as well as unsatisfactory compound behavior of lift joints are not to be excluded. These zones of weakness especially on the upstream side of the dam— exposed to high water pressure (static and dynamic)— represent an increased risk of safety. The main investigation, apart from the computation of the dynamic effects on the dam as a global structure, focuses on the stability analysis of a pressure-water filled crack configuration subjected to “dynamic loading” in the form of seismic action on the dam-reservoir-system and alternatively by “impact spot-loading” within sectors of the reservoir. A fracture mechanics based analysis shows an excessive potential of damage for the afflicted structure.

Keywords： dam-reservoir     earthquake     impact     cracking     fracture mechanics    

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Earthquake analysis of arch and gravity dams including the effects of foundation inhomogeneity

LIN Gao, DU Jianguo, HU Zhiqiang

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 41-50 doi: 10.1007/s11709-007-0004-4

Abstract: Dam-foundation interaction plays an important role in the design of earthquake-resistant concrete arch and gravityIn this paper, the effect of foundation inhomogeneity on the seismic response of arch and gravity damsdiscontinuity and with weak interlayer strata on the earthquake response of concrete arch dams as well as gravityaccount the effect of foundation inhomogeneity for the earthquake safety assessment of concrete arch and gravity

Keywords： selection     interlayer     damfoundation interaction     Geological     computational    

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New method for efficient control of hydrogen sulfide and methane in gravity sewers: Combination of NaOH

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-021-1509-0

Abstract:

• The combination of NaOH and nitrite was used to control harmful gas in sewers.

Keywords： Sewer corrosion     Sulfide control     Combination treatment     NaOH     Nitrite    

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Seismic analysis of semi-gravity RC cantilever retaining wall with TDA backfill

Il-Sang AHN, Lijuan CHENG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 455-469 doi: 10.1007/s11709-017-0392-z

Abstract: The retaining walls were semi-gravity reinforced concrete cantilever type.

Keywords： TDA (Tire Derived Aggregate)     scrap tires     retaining wall     seismic analysis     Finite Element Analysis    

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High-gravity-assisted emulsification for continuous preparation of waterborne polyurethane nanodispersion

Weihong Zhang, Dan Wang, Jie-Xin Wang, Yuan Pu, Jian-Feng Chen

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 1087-1099 doi: 10.1007/s11705-019-1895-z

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Several issues to be considered for long-term better behavior of concrete gravity dams

Jinsheng JIA,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1,   Pages 40-46 doi: 10.1007/s11709-010-0006-5

Abstract: Based on the investigation of the Fengman gravity dam, which is 91.7 m high, operated since 1943uplift pressure, freeze and thaw problems, etc., discussions on the life span evaluation of old concrete gravity

Keywords： dam safety     economic life span     structural life span     environmental life span     rehabilitation     social decision    

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of seismic wave propagation in massed medium on rate-dependent anisotropic damage growth in concrete gravity

Alireza DANESHYAR, Hamid MOHAMMADNEZHAD, Mohsen GHAEMIAN

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 346-363 doi: 10.1007/s11709-021-0694-z

Abstract: Herein, a finite element model for a comprehensive nonlinear seismic simulation of concrete gravity damsFinally, the Koyna concrete gravity dam is analyzed based on different assumptions of foundation, concrete

Keywords： soil–structure interaction     massed foundation     radiation damping     anisotropic damage    

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quantification of stability and damage detection parameters of coupled hydrodynamic-ground motion in concrete gravity

Nazim Abdul NARIMAN, Tom LAHMER, Peyman KARAMPOUR

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 303-323 doi: 10.1007/s11709-018-0462-x

Abstract: In this paper, models of the global system of the Koyna dam have been created using ABAQUS software considering the dam-reservoir-foundation interaction. Non coupled models and the coupled models were compared regarding the horizontal displacement of the dam crest and the differential settlement of the dam base in clay foundation. Meta models were constructed and uncertainty quantification process was adopted by the support of Sobol’s sensitivity indices considering five uncertain parameters by exploiting Box-Behnken experimental method. The non coupled models results determined overestimated predicted stability and damage detection in the dam. The rational effects of the reservoir height were very sensitive in the variation of the horizontal displacement of the dam crest with a small interaction effect with the beta viscous damping coefficient of the clay foundation. The modulus of elasticity of the clay foundation was the decisive parameter regarding the variation of the differential settlement of the dam base. The XFEM approach has been used for damage detection in relation with both minimum and maximum values of each uncertain parameter. Finally the effects of clay and rock foundations were determined regarding the resistance against the propagation of cracks in the dam, where the rock foundation was the best.

Keywords： massed foundation     hydrodynamic pressure     Box-Behnken method     meta model     Sobol’s sensitivity indices    

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uncoupler, 3,3′,4′,5-tetrachlorosalicylanilide addition for sludge reduction and fouling control in a gravity-driven

An Ding, Yingxue Zhao, Huu Hao Ngo, Langming Bai, Guibai Li, Heng Liang, Nanqi Ren, Jun Nan

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1275-4

Abstract: The gravity-driven membrane bioreactor (MBR)system is promising for decentralized sewage treatment because

Keywords： Gravity-driven membrane (GDM)     Energy uncoupling     Permeability     Sludge reduction     Membrane fouling     Fouling    

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Title Author Date Type Operation

High-gravity intensified iron-carbon micro-electrolysis for degradation of dinitrotoluene

Journal Article

Application of Satellite Gravity Gradiometry Data to the Refinement of the Earth’s Gravity Field

Ning Jinsheng,Luo Zhicai,Chen Yongqi

Journal Article

Stability analysis on Tingzikou gravity dam along deep-seated weak planes during earthquake

Weiping HE, Yunlong HE

Journal Article

A comprehensive simulation approach for pollutant bio-transformation in the gravity sewer

Nan Zhao, Huu Hao Ngo, Yuyou Li, Xiaochang Wang, Lei Yang, Pengkang Jin, Guangxi Sun

Journal Article

Evaluation of seismic reliability of gravity dam-reservoir-inhomogeneous foundation coupled system

Hamid Taghavi GANJI, Mohammad ALEMBAGHERI, Mohammad Houshmand KHANEGHAHI

Journal Article

mechanism of nitrobenzene degradation by hydroxyl radicals-based ozonation process enhanced by high gravity

Weizhou Jiao, Shengjuan Shao, Peizhen Yang, Kechang Gao, Youzhi Liu

Journal Article

Hazard potential of zones of weakness in gravity dams under impact loading conditions

Herbert LINSBAUER

Journal Article

Earthquake analysis of arch and gravity dams including the effects of foundation inhomogeneity

LIN Gao, DU Jianguo, HU Zhiqiang

Journal Article

New method for efficient control of hydrogen sulfide and methane in gravity sewers: Combination of NaOH

Journal Article

Seismic analysis of semi-gravity RC cantilever retaining wall with TDA backfill

Il-Sang AHN, Lijuan CHENG

Journal Article

High-gravity-assisted emulsification for continuous preparation of waterborne polyurethane nanodispersion

Weihong Zhang, Dan Wang, Jie-Xin Wang, Yuan Pu, Jian-Feng Chen

Journal Article

Several issues to be considered for long-term better behavior of concrete gravity dams

Jinsheng JIA,

Journal Article

of seismic wave propagation in massed medium on rate-dependent anisotropic damage growth in concrete gravity

Alireza DANESHYAR, Hamid MOHAMMADNEZHAD, Mohsen GHAEMIAN

Journal Article

quantification of stability and damage detection parameters of coupled hydrodynamic-ground motion in concrete gravity

Nazim Abdul NARIMAN, Tom LAHMER, Peyman KARAMPOUR

Journal Article

uncoupler, 3,3′,4′,5-tetrachlorosalicylanilide addition for sludge reduction and fouling control in a gravity-driven

An Ding, Yingxue Zhao, Huu Hao Ngo, Langming Bai, Guibai Li, Heng Liang, Nanqi Ren, Jun Nan

Journal Article