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Responses of bacterial strains isolated from drinking water environments to N-acyl-L-homoserine lactones and their analogs during biofilm formation

Zhuoying WU, Qing WANG, Feng GUO, Shenghua ZHANG, Qipei JIANG, Xin YU

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 2,   Pages 205-214 doi: 10.1007/s11783-013-0492-5

Abstract: Often as a result of biofilm formation, drinking water distribution systems (DWDS) are regularly facedQuorum sensing (QS) systems play a marked role in the regulation of microbial biofilm formation; thus, inhibition of QS systems may provide a promising approach to biofilm formation control in DWDS.This suggested that, in order to find an applicable QS inhibition approach for biofilm control in DWDS

Keywords： drinking water distribution systems (DWDS)     biofilm     quorum sensing (QS)     N-acyl-L-homoserine lactones (    

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Power system reconfiguration and loss minimization for a distribution systems using “Catfish PSO” algorithm

K Sathish KUMAR,S NAVEEN

Frontiers in Energy 2014, Volume 8, Issue 4,   Pages 434-442 doi: 10.1007/s11708-014-0313-y

Abstract: One of the very important ways to save electrical energy in the distribution system is network reconfigurationDistribution networks are built as interconnected mesh networks; however, they are arranged to be radialThe distribution feeder reconfiguration is to find a radial operating structure that optimizes networkDistribution feeder reconfiguration is a complex nonlinear combinatorial problem since the status ofThis paper proposes a new evolutionary algorithm (EA) for solving the distribution feeder reconfiguration

Keywords： distribution system reconfiguration (DFR)     power loss reduction     catfish particle swarm optimization (catfish    

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Optimal locations of monitoring stations in water distribution systems under multiple demand patterns

Shuming LIU, Wenjun LIU, Jinduan CHEN, Qi WANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 204-212 doi: 10.1007/s11783-011-0364-9

Abstract: calculated by accumulating their demand coverage under each demand pattern, and the impact of temporal distributionlocations of monitoring stations obtained using the DCI method can represent the water quality of water distributionsystems under multiple demand patterns better than the one obtained using previous methods.

Keywords： demand coverage     monitoring     optimization     water distribution network     water quality    

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Changes of microbial composition during wastewater reclamation and distribution systems revealed by high-throughput

Yiwen LIN,Dan LI,Siyu ZENG,Miao HE

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 539-547 doi: 10.1007/s11783-016-0830-5

Abstract: pyrosequencing to investigate microbial and pathogenic communities in two wastewater reclamation and distributionsystems.A total of 11972 effective 16S rRNA sequences were acquired from these two reclamation systems, and thenmost dominant phylum in reclaimed water after disinfection, which accounted for 83% and 88% in two systemssignificantly affected the microbial and pathogenic communities during reclaimed water storage and distribution

Keywords： wastewater reclamation systems     microbial community     pathogenic community     454-pyrosequencing    

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Fault classification and reconfiguration of distribution systems using equivalent capacity margin method

K. Sathish KUMAR, T. JAYABARATHI

Frontiers in Energy 2012, Volume 6, Issue 4,   Pages 394-402 doi: 10.1007/s11708-012-0211-0

Abstract: This paper investigates the capability of support vector machines (SVM) for prediction of fault classification and the use of the concept of equivalent capacity margin (ECM) for restoration of the power system. The SVM, as a novel type of machine learning based on statistical learning theory, achieves good generalization ability by adopting a structural risk minimization (SRM) induction principle aimed at minimizing a bound on the generalization error of a model rather than the minimization of the error on the training data only. Here, the SVM has been used as a classification. The inputs of the SVM model are power and voltage values. An equation has been developed for the prediction of the fault in the power system based on the developed SVM model. The next steps of this paper are the restoration and reconfiguration by using the ECM concept, the development of a code, and the testing of the results with various load outages, which have been executed for a 12 load system.

Keywords： support vector machines (SVM)     structural risk minimization (SRM)     equivalent capacity margin (ECM)     restoration     fault classification    

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A red water occurrence in drinking water distribution systems caused by changes in water source in Beijing

ZHANG Xiaojian,MI Zilong,WANG Yang,LIU Shuming,NIU Zhangbin,LU Pinpin,WANG Jun,GU Junnong,CHEN Chao

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 3,   Pages 417-426 doi: 10.1007/s11783-013-0558-4

Abstract: A red water phenomenon occurred in several communities few days after the change of water source in Beijing, China in 2008. In this study, the origin of this problem, the mechanism of iron release and various control measures were investigated. The results indicated that a significant increase in sulphate concentration as a result of the new water source was the cause of the red water phenomenon. The mechanism of iron release was found that the high-concentration sulphate in the new water source disrupted the stable shell of scale on the inner pipe and led to the release of iron compounds. Experiments showed that the iron release rate in the new source water within pipe section was over 11-fold higher than that occurring within the local source water. The recovery of tap water quality lasted several months despite ameliorative measures being implemented, including adding phosphate, reducing the overall proportion of the new water source, elevating the pH and alkalinity, and utilizing free chlorine as a disinfectant instead of chloramine. Adding phosphate was more effective and more practical than the other measures. The iron release rate was decreased after the addition of 1.5 mg·L orthophosphate- P, tripolyphosphate-P and hexametaphosphate-P by 68%, 83% and 87%, respectively. Elevating the pH and alkalinity also reduced the iron release rate by 50%. However, the iron release rate did not decreased after replacing chloramine by 0.5–0.8 mg·L of free chlorine as disinfectant.

Keywords： iron release     drinking water distribution system     sulphate     phosphate     red water control     water quality stability    

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Active-reactive power scheduling of integrated electricity-gas network with multi-microgrids

Frontiers in Energy 2023, Volume 17, Issue 2,   Pages 251-265 doi: 10.1007/s11708-022-0857-1

Abstract: network (IEGN) and strengthening the interaction between the active-reactive power flow in the power distributionnetwork (PDN) and the natural gas flow in the gas distribution network (GDN).

Keywords： combined cooling     heating     and power (CCHP)     integrated energy systems (IES)     natural gas     power distributionsystem     gas distribution system    

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Evaluation of the situational awareness effects for smart distribution networks under the novel

Leijiao GE, Yuanliang LI, Suxuan LI, Jiebei ZHU, Jun YAN

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 143-158 doi: 10.1007/s11708-020-0703-2

Abstract: As a key application of smart grid technologies, the smart distribution network (SDN) is expected toIn addition, a case study in a real distribution network of Tianjin China is conducted whose outcomes

Keywords： distribution networks     operation and maintenance     expert systems    

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Distribution and temporal variability of the solar resource at a site in south-east Norway

Muyiwa S. ADARAMOLA

Frontiers in Energy 2016, Volume 10, Issue 4,   Pages 375-381 doi: 10.1007/s11708-016-0426-6

Abstract: This paper investigated the distribution and variability of solar radiation using the a 10-year (2006

Keywords： coefficient of variation     global solar radiation     diffuse ratio     albedo     PV energy systems    

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Energy supply for water electrolysis systems using wind and solar energy to produce hydrogen: a case

Mostafa REZAEI, Ali MOSTAFAEIPOUR, Mojtaba QOLIPOUR, Mozhgan MOMENI

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 539-550 doi: 10.1007/s11708-019-0635-x

Abstract: of this study is to evaluate wind and solar energy potentials in prone areas of Iran by the Weibull distributionAfter examining three different types of commercial wind turbines and photovoltaic (PV) systems, it becomesBesides, by installing one thousand sets of X21-345 PV systems in Zahedan, 20 kg/d of hydrogen, enough

Keywords： wind energy     solar energy     water electrolysis     hydrogen production     Weibull distribution function (WDF)     Angstrom-Prescott    

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Synergistic effects of sodium hypochlorite disinfection and iron-oxidizing bacteria on early corrosion in cast iron pipes

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-021-1506-3

Abstract:

• The early corrosion process in the cast iron pipes was investigated.

Keywords： Cast iron pipe corrosion     Drinking water distribution systems     Chlorine disinfection     Iron-oxidizing    

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Copper and zinc interaction on water clearance and tissue metal distribution in the freshwater mussel

Tianxiang XIA, Xuehua LIU

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 236-242 doi: 10.1007/s11783-010-0218-8

Abstract: Copper and zinc interaction on clearance from water and distribution in different tissues was investigated

Keywords： interaction     mussel     copper     zinc     clearance     distribution    

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Nitrogen distribution in the products from the hydrothermal liquefaction of sp. and sp.

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 985-995 doi: 10.1007/s11705-021-2126-y

Abstract: ., reaction temperature, residence time, solid loading rate) on the distribution of nitrogen in the oildifferences of amino acids in the protein components in the two microalgae might affect the nitrogen distribution

Keywords： microalgae     hydrothermal liquefaction     biocrude     nitrogen distribution    

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Thermodynamic models and energy distribution of single-phase heated surface in a boiler under unsteady

Xiyan GUO, Yongping YANG

Frontiers in Energy 2011, Volume 5, Issue 1,   Pages 69-74 doi: 10.1007/s11708-010-0117-7

Abstract: Taking the low-temperature superheater of a 610 t/h-boiler as an example, the distribution of energy,

Keywords： thermodynamic model     energy distribution     boiler     unsteady conditions    

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Estimation of distribution algorithm enhanced particle swarm optimization for water distribution network

Xuewei QI,Ke LI,Walter D. POTTER

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 341-351 doi: 10.1007/s11783-015-0776-z

Abstract: The optimization of a water distribution network (WDN) is a highly nonlinear, multi-modal, and constrainedAn improved estimation of distribution algorithm (EDA) using historic best positions to construct a sampleTwo water distribution network benchmark examples from the literature are adopted to evaluate the performance

Keywords： particle swarm optimization (PSO)     diversity control     estimation of distribution algorithm (EDA)     waterdistribution network (WDN)     premature convergence     hybrid strategy    

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Title Author Date Type Operation

Responses of bacterial strains isolated from drinking water environments to N-acyl-L-homoserine lactones and their analogs during biofilm formation

Zhuoying WU, Qing WANG, Feng GUO, Shenghua ZHANG, Qipei JIANG, Xin YU

Journal Article

Power system reconfiguration and loss minimization for a distribution systems using “Catfish PSO” algorithm

K Sathish KUMAR,S NAVEEN

Journal Article

Optimal locations of monitoring stations in water distribution systems under multiple demand patterns

Shuming LIU, Wenjun LIU, Jinduan CHEN, Qi WANG

Journal Article

Changes of microbial composition during wastewater reclamation and distribution systems revealed by high-throughput

Yiwen LIN,Dan LI,Siyu ZENG,Miao HE

Journal Article

Fault classification and reconfiguration of distribution systems using equivalent capacity margin method

K. Sathish KUMAR, T. JAYABARATHI

Journal Article

A red water occurrence in drinking water distribution systems caused by changes in water source in Beijing

ZHANG Xiaojian,MI Zilong,WANG Yang,LIU Shuming,NIU Zhangbin,LU Pinpin,WANG Jun,GU Junnong,CHEN Chao

Journal Article

Active-reactive power scheduling of integrated electricity-gas network with multi-microgrids

Journal Article

Evaluation of the situational awareness effects for smart distribution networks under the novel

Leijiao GE, Yuanliang LI, Suxuan LI, Jiebei ZHU, Jun YAN

Journal Article

Distribution and temporal variability of the solar resource at a site in south-east Norway

Muyiwa S. ADARAMOLA

Journal Article

Energy supply for water electrolysis systems using wind and solar energy to produce hydrogen: a case

Mostafa REZAEI, Ali MOSTAFAEIPOUR, Mojtaba QOLIPOUR, Mozhgan MOMENI

Journal Article

Synergistic effects of sodium hypochlorite disinfection and iron-oxidizing bacteria on early corrosion in cast iron pipes

Journal Article

Copper and zinc interaction on water clearance and tissue metal distribution in the freshwater mussel

Tianxiang XIA, Xuehua LIU

Journal Article

Nitrogen distribution in the products from the hydrothermal liquefaction of sp. and sp.

Journal Article

Thermodynamic models and energy distribution of single-phase heated surface in a boiler under unsteady

Xiyan GUO, Yongping YANG

Journal Article

Estimation of distribution algorithm enhanced particle swarm optimization for water distribution network

Xuewei QI,Ke LI,Walter D. POTTER

Journal Article