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Characteristics and energy distribution of modulated multi-pulse injection modes based diesel HCCI combustion

LIU Bin, SU Wanhua, WANG Hui, HUANG Haozhong

Frontiers in Energy 2007, Volume 1, Issue 4,   Pages 420-427 doi: 10.1007/s11708-007-0061-7

Abstract: Cycle fuel energy distribution and combustion characteristics of early in-cylinder diesel homogenouscharge compression ignition (HCCI) combustion organized by modulated multi-pulse injection modes are

Keywords： combustion     compression     homogenous     in-cylinder     modulated multi-pulse    

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Mercury emission and adsorption characteristics of fly ash in PC and CFB boilers

Li JIA, Baoguo FAN, Xianrong ZHENG, Xiaolei QIAO, Yuxing YAO, Rui ZHAO, Jinrong GUO, Yan JIN

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 112-123 doi: 10.1007/s11708-020-0682-3

Abstract: The mercury emission was obtained by measuring the mercury contents in flue gas and solid samples in pulverized coal (PC) and circulating fluidized bed (CFB) utility boilers. The relationship was obtained between the mercury emission and adsorption characteristics of fly ash. The parameters included unburned carbon content, particle size, and pore structure of fly ash. The results showed that the majority of mercury released to the atmosphere with the flue gas in PC boiler, while the mercury was enriched in fly ash and captured by the precipitator in CFB boiler. The coal factor was proposed to characterize the impact of coal property on mercury emissions in this paper. As the coal factor increased, the mercury emission to the atmosphere decreased. It was also found that the mercury content of fly ash in the CFB boiler was ten times higher than that in the PC boiler. As the unburned carbon content increased, the mercury adsorbed increased. The capacity of adsorbing mercury by fly ash was directly related to the particle size. The particle size corresponding to the highest content of mercury, which was about 560 ng/g, appeared in the range from 77.5 to 106 µm. The content of mesoporous (4–6 nm) of the fly ash in the particle size of 77.5–106 µm was the highest, which was beneficial to adsorbing the mercury. The specific surface area played a more significant role than specific pore volume in the mercury adsorption process.

Keywords： mercury     combustion modes     coal property     fly ash     particle size    

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The impact of different voltage application modes on biodegradation of chloramphenicol and shift of microbial

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1576-x

Abstract:

● Presented coupled system enhanced biodegradation of antibiotic chloramphenicol.

Keywords： Electrical stimulation     Biodegradation     Microbial community     Chloramphenicol    

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Experimental analysis on strength and failure modes of wood beam-column connections

Zhenhua HUANG,Sheldon Q SHI,Liping CAI

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 3,   Pages 260-269 doi: 10.1007/s11709-014-0261-y

Abstract: This research experimentally examined the strength, failure modes, and behaviors of dowel-bearing andfiber-bearing wood beam-column connections and explored the effects of cyclic loading on the strength, failure modes

Keywords： wood     connection     dowel-bearing     fiber-bearing    

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Optimization for operating modes based on simulation of seasonal underground thermal energy storage

ZHAO Jun, CHEN Yan, LI Xinguo

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 298-301 doi: 10.1007/s11708-008-0053-y

Abstract: A simulation study was performed to study the influence of system operation modes on thermal recoveryindicate a thermal recovery ratio of less than 67% and different temperature distributions under three modes
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Multi-scale investigation of active failure for various modes of wall movement

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 961-979 doi: 10.1007/s11709-021-0738-4

Abstract: Hence, various modes of wall movement (translation and rotation) toward the active state are modeledon pressure distribution and deformation mechanisms are discussed with reference to the associated modes

Keywords： discrete-element modelling     granular materials     retaining walls     particle shape     arching    

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Bi-modes alternation stepping ultrasonic motors

JIN Jiamei, ZHAO Chunsheng

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 101-105 doi: 10.1007/s11465-008-0018-1

Abstract: Based on the principle of alternative operation of two bending vibration modes in an annular stator,The driving forces are generated from the motions of projections on the stator in two modes.

Keywords： miss-step     bi-direction     Two-phase sinusoidal     positioning     accumulative    

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Improvement to observability measures of LFO modes in power systems with DFIGs

Shenghu LI

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 539-549 doi: 10.1007/s11708-019-0617-z

Abstract: Observation of the low-frequency oscillation (LFO) modes in power systems is important to design theequations of the power system with the doubly-fed induction generators (DFIGs) are derived to find the LFO modesthe observability measure is improved to consider the initial output and the attenuation speed of the modesThe numerical results from the small and large-disturbance validate the LFO modes caused by the DFIGs

Keywords： wind power system     low-frequency oscillation (LFO)     observability measure     sensitivity     doubly-fed induction generator (DFIG)    

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Macro-architectured cellular materials: Properties, characteristic modes, and prediction methods

Zheng-Dong MA

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 3,   Pages 442-459 doi: 10.1007/s11465-018-0488-8

Abstract: The characteristic modes and the stress recovery process used to predict the stress distribution inside

Keywords： architectured material     cellular materials     multi-scale modeling     homogenization method     effective material properties     computational method    

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Combustion characteristics and kinetics of bio-oil

Ruixia ZHANG, Zhaoping ZHONG, Yaji HUANG

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 119-124 doi: 10.1007/s11705-009-0068-x

Abstract: The combustion characteristics of bio-oils derived from rice husk and corn were studied by thermogravimetrydifferential thermal analysis (DTA) curves of bio-oils in air and nitrogen atmosphere, we analyzed the combustioncharacteristics of different kinds of bio-oils in different atmospheres and worked out the combustionThe thermogravimetry indicated that the combustion process of bio-oil was divided into three stages.At the same time, the combustion process can be described by different order reaction models, and with

Keywords： bio-oil     combustion characteristics     combustion kinetics    

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Performance of completely autotrophic nitrogen removal over nitrite process under different aeration modes

GUO Jinsong, YANG Guohong, FANG Fang, QIN Yu

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 4,   Pages 439-445 doi: 10.1007/s11783-008-0046-4

Abstract: performance of completely autotrophic nitrogen removal over nitrite (CANON) process under different aeration modes

Keywords： Synthetic wastewater     process     Whereas     biofilm     detection    

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Numerical simulation of laminar premixed combustion in a porous burner

ZHAO Pinghui, CHEN Yiliang, LIU Minghou, DING Min, ZHANG Genxuan

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 233-238 doi: 10.1007/s11708-007-0032-8

Abstract: Premixed combustion in porous media differs substantially from combustion in free space.interphase heat transfer between a gas mixture and a porous medium becomes dominant in the premixed combustionIn this paper, the premixed combustion of CH

Keywords： interphase     mixture     dominant     Premixed combustion     premixed combustion    

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Entropy production analysis of swirling diffusion combustion processes

Deodat MAKHANLALL, Linhua LIU,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 326-332 doi: 10.1007/s11708-009-0058-1

Abstract: A critical factor in the design of combustion systems for optimum fuel economy and emission performanceobjective of this study is to map these irreversibilities in terms of entropy production for methane combustionThe numerical solution of the combustion process is conducted with the help of a Fluent 6.1.22 computerradiative heat transfer, which is an important source of entropy production, cannot be omitted for combustionIntroducing swirling air into the combustion system and operations with the appropriate Boltzmann number

Keywords： entropy-based design     radiation transfer     swirl     magnussen combustion-model    

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Performance monitoring of non-gaussian chemical processes with modes-switching using globality-locality

Xin Peng, Yang Tang, Wenli Du, Feng Qian

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 429-439 doi: 10.1007/s11705-017-1675-6

Abstract: In this paper, we propose a novel performance monitoring and fault detection method, which is based on modified structure analysis and globality and locality preserving (MSAGL) projection, for non-Gaussian processes with multiple operation conditions. By using locality preserving projection to analyze the embedding geometrical manifold and extracting the non-Gaussian features by independent component analysis, MSAGL preserves both the global and local structures of the data simultaneously. Furthermore, the tradeoff parameter of MSAGL is tuned adaptively in order to find the projection direction optimal for revealing the hidden structural information. The validity and effectiveness of this approach are illustrated by applying the proposed technique to the Tennessee Eastman process simulation under multiple operation conditions. The results demonstrate the advantages of the proposed method over conventional eigendecomposition-based monitoring methods.

Keywords： non-Gaussian processes     subspace projection     independent component analysis     locality preserving projection     finite mixture model    

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Study on combustion characteristics of blended coals

LI Yonghua, WANG Chunbo, CHEN Hongwei

Frontiers in Energy 2007, Volume 1, Issue 1,   Pages 96-100 doi: 10.1007/s11708-007-0010-1

Abstract: So it is of great necessity to investigate the combustion of blended coals.

Keywords： combustion     capacity     variety     blended     burnout    

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Title Author Date Type Operation

Characteristics and energy distribution of modulated multi-pulse injection modes based diesel HCCI combustion

LIU Bin, SU Wanhua, WANG Hui, HUANG Haozhong

Journal Article

Mercury emission and adsorption characteristics of fly ash in PC and CFB boilers

Li JIA, Baoguo FAN, Xianrong ZHENG, Xiaolei QIAO, Yuxing YAO, Rui ZHAO, Jinrong GUO, Yan JIN

Journal Article

The impact of different voltage application modes on biodegradation of chloramphenicol and shift of microbial

Journal Article

Experimental analysis on strength and failure modes of wood beam-column connections

Zhenhua HUANG,Sheldon Q SHI,Liping CAI

Journal Article

Optimization for operating modes based on simulation of seasonal underground thermal energy storage

ZHAO Jun, CHEN Yan, LI Xinguo

Journal Article

Multi-scale investigation of active failure for various modes of wall movement

Journal Article

Bi-modes alternation stepping ultrasonic motors

JIN Jiamei, ZHAO Chunsheng

Journal Article

Improvement to observability measures of LFO modes in power systems with DFIGs

Shenghu LI

Journal Article

Macro-architectured cellular materials: Properties, characteristic modes, and prediction methods

Zheng-Dong MA

Journal Article

Combustion characteristics and kinetics of bio-oil

Ruixia ZHANG, Zhaoping ZHONG, Yaji HUANG

Journal Article

Performance of completely autotrophic nitrogen removal over nitrite process under different aeration modes

GUO Jinsong, YANG Guohong, FANG Fang, QIN Yu

Journal Article

Numerical simulation of laminar premixed combustion in a porous burner

ZHAO Pinghui, CHEN Yiliang, LIU Minghou, DING Min, ZHANG Genxuan

Journal Article

Entropy production analysis of swirling diffusion combustion processes

Deodat MAKHANLALL, Linhua LIU,

Journal Article

Performance monitoring of non-gaussian chemical processes with modes-switching using globality-locality

Xin Peng, Yang Tang, Wenli Du, Feng Qian

Journal Article

Study on combustion characteristics of blended coals

LI Yonghua, WANG Chunbo, CHEN Hongwei

Journal Article