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Excitation-emission matrix (EEM) fluorescence spectroscopy for characterization of organic matter in

Jinlan Yu, Kang Xiao, Wenchao Xue, Yue-xiao Shen, Jihua Tan, Shuai Liang, Yanfen Wang, Xia Huang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 2, doi: 10.1007/s11783-019-1210-8

Abstract: • Principles and methods for fluorescence EEM are systematically outlined. • Fluorophore peak/regionThree-dimensional excitation-emission matrix (3D-EEM) fluorescence spectroscopy, a powerful tool forThis paper revisits the principles and methods of fluorescence EEM, and reviews the recent progress inWe systematically introduced the information extracted from EEM by considering the fluorescence peakare summarized for potential use, including quantum yield, Stokes shift, excited energy state, and fluorescence

Keywords： excitation-emission matrix (EEM)     dissolved organic matter (DOM)     membrane bioreactor (MBR)     fluorescence    

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Chemical identification and genotoxicity analysis of petrochemical industrial wastewater

Jing ZHANG, Shigong WANG, Can WANG, Hongying HU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 3,   Pages 350-359 doi: 10.1007/s11783-012-0404-0

Abstract: Umu-test was used to detect the genetic toxicity of the wastewater samples, and fluorescence spectraFluorescence spectroscopy also confirms this result, and tryptophan-like substances may play an important

Keywords： dissolved organic matter     resin fraction     genetic toxicity     fluorescence excitation and emission matrix    

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Investigation of fluorescence characterization and electrochemical behavior on the catalysts of nanosized

Chang-Mao HUNG, Wen-Liang LAI, Jane-Li LIN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 428-434 doi: 10.1007/s11783-013-0517-0

Abstract: catalysts were thoroughly measured using transmission electron microscopy (TEM), three-dimensional excitation-emissionfluorescent matrix (EEFM) spectroscopy, UV-Vis absorption, dynamic light-scattering (DLS), zeta potentialspectroscopy was proven to be an appropriate and effective method to characterize the Pt clusters in intrinsic emission

Keywords： ammonia (NH3)     nanosized Pt-Rh/γ-Al2O3 catalyst     excitation-emission fluorescentmatrix (EEFM)     selective catalytic oxidation (SCO)     tubular fixed-bed reactor (TFBR)    

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Interactions between metal ions and the biopolymer in activated sludge: quantification and effects of system pH value

Yun Zhou, Siqing Xia, Binh T. Nguyen, Min Long, Jiao Zhang, Zhiqiang Zhang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 1, doi: 10.1007/s11783-017-0898-6

Abstract: The biopolymer showed two protein-like fluorescence peaks (peaks A and B).The biopolymer had two protein-like fluorescence peaks (Ex/Em= 280 nm/326–338 nm for peak A; Ex/Em= 220The fluorescence intensities of peak B were higher than those of peak A.The modified Stern-Volmer equation well depicted the fluorescence quenching titration.

Keywords： Metal ions     Biopolymer     Activated sludge     Three-dimensional excitation emission matrix (3D-EEM)     Fluorescence    

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A chemometric analysis on the fluorescent dissolved organic matter in a full-scale sequencing batch reactor for municipal wastewater treatment

Chen Qian, Wei Chen, Wei-Hua Li, Han-Qing Yu

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0962-2

Abstract: Fluorescence excitation-emission matrix (EEM) in combination with parallel factor analysis (PARAFAC)

Keywords： Wastewater treatment plants (WWTPs)     Excitation-emission matrix (EEM)     Parallel factor (PARAFAC)     Parallel    

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Identification of sources, characteristics and photochemical transformations of dissolved organic matter with EEM-PARAFAC in the Wei River of China

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1340-z

Abstract:

• The source of DOM in surface water and sediment is inconsistent.

Keywords： Dissolved organic matter     Parallel factor analysis     Excitation-emission matrices     Photodegradation    

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Approximation of structural damping and input excitation force

Mohammad SALAVATI

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2,   Pages 244-254 doi: 10.1007/s11709-016-0371-9

Abstract: Structural dynamic characteristics are the most significant parameters that play a decisive role in structural damage assessment. The more sensitive parameter to the damage is the damping behavior of the structure. The complexity of structural damping mechanisms has made this parameter to be one of the ongoing research topics. Despite all the difficulties in the modeling of damping, there are some approaches like as linear and nonlinear models which are described as the energy dissipation throughout viscous, material or structural hysteretic and frictional damping mechanisms. In the presence of a mathematical model of the damping mechanisms, it is possible to estimate the damping ratio from the theoretical comparison of the damped and un-damped systems. On the other hand, solving the inverse problem of the input force estimation and its distribution to each SDOFs, from the measured structural responses plays an important role in structural identification process. In this paper model-based damping approximation method and a model-less structural input estimation are considered. The effectiveness of proposed methods has been carried out through analytical and numerical simulation of the lumped mass system and the results are compared with reference data. Consequently, high convergence of the comparison results illustrates the satisfactory of proposed approximation methods.

Keywords： structural modal parameters     damping identification method     input excitation force identification     Inverse    

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Characterization of the dissolved organic matter in sewage effluent of sequence batch reactor: the impact of carbon source

Jin GUO, Feng SHENG, Jianhua GUO, Xiong YANG, Mintao MA, Yongzhen PENG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 280-287 doi: 10.1007/s11783-011-0336-0

Abstract: Size exclusion chromatography (SEC) and fluorescence of excitation emission matrices (EEM) demonstrated

Keywords： extracellular polymeric substance (EPS)     molecular weight distribution (MWD)     hydrophobic     hydrophilic     excitationemission matrices (EEM)    

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Synthesis and fluorescence behavior of 2,5-diphenyl-1,3,4-oxadiazole-containing bismaleimides and bissuccinimides

Xin ZHANG, Zichen LI

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 381-387 doi: 10.1007/s11705-013-1359-9

Abstract: Almost no or very weak fluorescence was observed for these bismaleimides, however, the bissuccinimidesshow a strong fluorescence.by UV-vis absorption and fluorescence emission spectroscopy.-Bissuccinimide displays increasing fluorescence quantum yields with red shifts of 22–24 nm, comparedPolymerizable C=C bonds play a key role in the intramolecular fluorescence quenching.

Keywords： fluorescence     bismaleimide     oxadiazole     succinimide    

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Decellularized extracellular matrix mediates tissue construction and regeneration

Frontiers of Medicine 2022, Volume 16, Issue 1,   Pages 56-82 doi: 10.1007/s11684-021-0900-3

Abstract: Contributing to organ formation and tissue regeneration, extracellular matrix (ECM) constituents provideContaining the crucial traits of the cellular microenvironment, ECM substitutes mediate cell–matrix interactions

Keywords： decellularized extracellular matrix     3D culture     organoids     tissue repair    

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Simulation Research on PWM Control in Excitation System of Generator

Jia Guixi,Xu Wei,Guo Baoyue,Zhang Chentang

Strategic Study of CAE 2005, Volume 7, Issue 6,   Pages 50-53

Abstract:

A high quality excitation system not only plays an important role in the stability of power systemIn this paper, a PWM rectifier is applied to excitation system of synchronous generators.;s supply by achieving low harmonic current conversion and improving high power factor transform of excitation

Keywords： PWM     high power factor     excitation system     Matlab simulation    

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Perspective of mixed matrix membranes for carbon capture

Shinji Kanehashi, Colin A. Scholes

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 3,   Pages 460-469 doi: 10.1007/s11705-019-1881-5

Abstract: Mixed matrix membranes (MMMs) have a composite structure that consists of polymers and fillers, therefore

Keywords： membranes     polymeric     mixed matrix     impurities    

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Synthesis and characterization of 2,5-bis[4-(2-arylvinyl)phenyl]-1,3,4-oxadiazoles with two-photon fluorescence

ZHU Xiaoqin, QIAN Ying, LU Zhifeng

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 4,   Pages 381-384 doi: 10.1007/s11705-007-0069-6

Abstract: phenyl]-1,3,4-oxadiazoles that exhibit strong two-photon absorption and enhanced two-photon excited fluorescence-conjugated bridging unit can enhance the two-photon absorption and two-photon fluorescence.

Keywords： 2-arylvinyl     trans-vinylene character     effective     fluorescence     push-core-pull-core-push    

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hydrophobic environment triggering reactive fluorescence probe to real-time monitor mitochondrial DNA

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 1,   Pages 92-102 doi: 10.1007/s11705-021-2063-9

Abstract: Herein, we constructed an in situ hydrophobic environment-triggering reactive fluorescence probeMeanwhile, MBI-CHO immediately emitted a significative fluorescence signal changes at 437 and 553 nm

Keywords： hydrolysis reaction     mitochondrial DNA damage     in situ hydrophobic environment trigger     fluorescence    

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Carbon dots-based fluorescence sensor for two-photon imaging of pH in diabetic mice

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 298-306 doi: 10.1007/s11705-022-2212-9

Abstract: The carbon dots-based sensor (CA-CDs) exhibited pH-dependent increase in fluorescence intensity and showedNotably, the fluorescence sensor has a reversible response to pH change.

Keywords： carbon dots     two-photon imaging     pH     diabetic mice    

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Title Author Date Type Operation

Excitation-emission matrix (EEM) fluorescence spectroscopy for characterization of organic matter in

Jinlan Yu, Kang Xiao, Wenchao Xue, Yue-xiao Shen, Jihua Tan, Shuai Liang, Yanfen Wang, Xia Huang

Journal Article

Chemical identification and genotoxicity analysis of petrochemical industrial wastewater

Jing ZHANG, Shigong WANG, Can WANG, Hongying HU

Journal Article

Investigation of fluorescence characterization and electrochemical behavior on the catalysts of nanosized

Chang-Mao HUNG, Wen-Liang LAI, Jane-Li LIN

Journal Article

Interactions between metal ions and the biopolymer in activated sludge: quantification and effects of system pH value

Yun Zhou, Siqing Xia, Binh T. Nguyen, Min Long, Jiao Zhang, Zhiqiang Zhang

Journal Article

A chemometric analysis on the fluorescent dissolved organic matter in a full-scale sequencing batch reactor for municipal wastewater treatment

Chen Qian, Wei Chen, Wei-Hua Li, Han-Qing Yu

Journal Article

Identification of sources, characteristics and photochemical transformations of dissolved organic matter with EEM-PARAFAC in the Wei River of China

Journal Article

Approximation of structural damping and input excitation force

Mohammad SALAVATI

Journal Article

Characterization of the dissolved organic matter in sewage effluent of sequence batch reactor: the impact of carbon source

Jin GUO, Feng SHENG, Jianhua GUO, Xiong YANG, Mintao MA, Yongzhen PENG

Journal Article

Synthesis and fluorescence behavior of 2,5-diphenyl-1,3,4-oxadiazole-containing bismaleimides and bissuccinimides

Xin ZHANG, Zichen LI

Journal Article

Decellularized extracellular matrix mediates tissue construction and regeneration

Journal Article

Simulation Research on PWM Control in Excitation System of Generator

Jia Guixi,Xu Wei,Guo Baoyue,Zhang Chentang

Journal Article

Perspective of mixed matrix membranes for carbon capture

Shinji Kanehashi, Colin A. Scholes

Journal Article

Synthesis and characterization of 2,5-bis[4-(2-arylvinyl)phenyl]-1,3,4-oxadiazoles with two-photon fluorescence

ZHU Xiaoqin, QIAN Ying, LU Zhifeng

Journal Article

hydrophobic environment triggering reactive fluorescence probe to real-time monitor mitochondrial DNA

Journal Article

Carbon dots-based fluorescence sensor for two-photon imaging of pH in diabetic mice

Journal Article