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Modeling of hydrological processes in arid agricultural regions

Jiang LI,Xiaomin MAO,Shaozhong KANG,David A. BARRY

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 4,   Pages 283-294 doi: 10.15302/J-FASE-2015076

Abstract: Understanding of hydrological processes, including consideration of interactions between vegetation growthModels can be categorized into three classes: (1) regional distributed hydrological models with various

Keywords： hydrological processes     irrigation area     SPAC     crop growth     groundwater     canal seepage    

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Effects of land use change on hydrological cycle from forest to upland field in a catchment, Japan

Chuan ZHANG, Keiji TAKASE, Hiroki OUE, Nobuhiro EBISU, Haofang YAN

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 456-465 doi: 10.1007/s11709-013-0218-6

Abstract: Understanding the effects of land use change on the hydrological cycle is very important for developmentIn this study, soil and hydrological properties in an upland field catchment, which was reclaimed partiallyFurthermore, a semi-distributed hydrological model was applied in the upland field catchment to understandthe integrated effects of reclamation on the hydrological cycle.

Keywords： land-use change     hydrological processes     upland field catchment     forest catchment     semi-distributed hydrological    

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Xin’anjiang Nested Experimental Watershed (XAJ-NEW) for Understanding Multiscale Water Cycle: Scientific Objectives and Experimental Design Article

Ke Zhang,Yunping Li,Zhongbo Yu,Tao Yang,Junzeng Xu,Lijun Chao,Jin Ni,Liutong Wang,Yun Gao,Yuzhong Hu,Zuoding Lin,

Engineering 2022, Volume 18, Issue 11,   Pages 207-217 doi: 10.1016/j.eng.2021.08.026

Abstract: strengthening the observation of the water cycle, discovering the spatiotemporal scaling effects of hydrologicalprocesses, and revealing the mechanisms controlling runoff generation and partitioning in a typicalmechanisms controlling runoff generation and partitioning, discover the spatiotemporal scaling effects of hydrologicalprocesses, and understand the impacts of climate change on hydrological processes.These findings provide new insights into understanding multiscale hydrological processes and their responses

Keywords： Water cycle     Runoff generation     Hydrological processes     Hydrological scaling     Soil moisture     Groundwater     Canopy    

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A review of hydrological/water-quality models

Liangliang GAO,Daoliang LI

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 4,   Pages 267-276 doi: 10.15302/J-FASE-2014041

Abstract: Water quality models are important in predicting the changes in surface water quality for environmental management. A range of water quality models are wildly used, but every model has its advantages and limitations for specific situations. The aim of this review is to provide a guide to researcher for selecting a suitable water quality model. Eight well known water quality models were selected for this review: SWAT, WASP, QUALs, MIKE 11, HSPF, CE-QUAL-W2, ELCOM-CAEDYM and EFDC. Each model is described according to its intended use, development, simulation elements, basic principles and applicability (e.g., for rivers, lakes, and reservoirs and estuaries). Currently, the most important trends for future model development are: (1) combination models—individual models cannot completely solve the complex situations so combined models are needed to obtain the most appropriate results, (2) application of artificial intelligence and mechanistic models combined with non-mechanistic models will provide more accurate results because of the realistic parameters derived from non-mechanistic models, and (3) integration with remote sensing, geographical information and global position systems (3S) —3S can solve problems requiring large amounts of data.

Keywords： water quality models     applications     future trends    

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Corrigendum to ‘‘A Comparison of SWAT Model Calibration Techniques for Hydrological Modeling in the Ganga Corrigendum

Nikita Shivhare, Prabhat Kumar Singh Dikshit, Shyam Bihari

Engineering 2019, Volume 5, Issue 1,   Pages 181-181 doi: 10.1016/j.eng.2018.11.009

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Emerging electrochemical processes for materials recovery from wastewater: Mechanisms and prospects

Lingchen Kong, Xitong Liu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1269-2

Abstract: Abstract • Mechanisms for selective recovery of materials in electrochemical processes are discussedapplications: electrosorption based on carbonaceous and intercalation electrodes, electrochemical redox processesWe highlight the mechanisms for achieving selective materials recovery in these processes.

Keywords： Materials recovery     Electrosorption     Capacitive deionization     Redox processes     Electrochemical precipitation    

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Trend detection and stochastic simulation prediction of streamflow at Yingluoxia hydrological station

Chenglong ZHANG,Mo LI,Ping GUO

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 1,   Pages 81-96 doi: 10.15302/J-FASE-2016112

Abstract: the trends of hydrologic time series are nonstationary, and consequently the established methods for hydrologicalwas used to simulate these stochastic components with normal distribution, and thus a new ensemble hydrological

Keywords： Monte Carlo     nonstationary     trend detection     streamflow prediction     decomposition and ensemble     Yingluoxia    

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A new approach for scheduling of multipurpose batch processes with unlimited intermediate storage policy

Nikolaos Rakovitis, Nan Zhang, Jie Li, Liping Zhang

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 784-802 doi: 10.1007/s11705-019-1858-4

Abstract: Optimal scheduling of their processes can lead facilities towards this direction.

Keywords： scheduling     multipurpose batch processes     simultaneous transfer     mixed-integer linear programming    

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Automated synthesis of steady-state continuous processes using reinforcement learning

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 288-302 doi: 10.1007/s11705-021-2055-9

Abstract: Automated flowsheet synthesis is an important field in computer-aided process engineering. The present work demonstrates how reinforcement learning can be used for automated flowsheet synthesis without any heuristics or prior knowledge of conceptual design. The environment consists of a steady-state flowsheet simulator that contains all physical knowledge. An agent is trained to take discrete actions and sequentially build up flowsheets that solve a given process problem. A novel method named SynGameZero is developed to ensure good exploration schemes in the complex problem. Therein, flowsheet synthesis is modelled as a game of two competing players. The agent plays this game against itself during training and consists of an artificial neural network and a tree search for forward planning. The method is applied successfully to a reaction-distillation process in a quaternary system.

Keywords： automated process synthesis     flowsheet synthesis     artificial intelligence     machine learning     reinforcement learning    

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Effectiveness of tertiary treatment processes in removing different classes of emerging contaminants

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1583-y

Abstract:

● Different advanced treatment processes were tested for ECs removal

Keywords： Micropollutants     Wastewater     PAC     Membranes     UV     Tertiary treatment    

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Fundamental influences of particles on stirred and unstirred venting processes of foaming systems

Henrik LEIMEISTER,Jörg STEINBACH

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 2,   Pages 141-148 doi: 10.1007/s11705-014-1423-0

Abstract: Venting is the common safety measure to protect plant equipment against excessive overpressure. So far, scenarios in which particles were part of the system and should have been accounted for did ignore their presence; the scenarios were treated like a two-phase system. Current research shows that particles can have a major influence on the venting behaviour. Experimental results indicate that particles affect level swell and relief flow especially of foamy systems. Based on those results four different layers of influence of the particle have been identified and are presented in a first model. Based on this model recommendations for the development of new and more complex models are given.

Keywords： venting     multi-phase    

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Physical and chemical processes of wintertime secondary nitrate aerosol formation

Qi YING

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 348-361 doi: 10.1007/s11783-011-0343-1

Abstract: The UCD/CIT model was modified to include a process analysis (PA) scheme for gas and particulate matter (PM) to study the formation of secondary nitrate aerosol during a stagnant wintertime air pollution episode during the California Regional PM /PM Air Quality Study (CRPAQS) where detailed measurements of PM components are available at a few sites. Secondary nitrate is formed in the urban areas from near the ground to a few hundred meters above the surface during the day with a maximum modeled net increase rate of 4 μg·m ·d during the study episode. The secondary nitrate formation rate in rural areas is lower due to lower NO . In the afternoon hours, near-surface temperature can be high enough to evaporate the particulate nitrate. In the nighttime hours, both the gas phase N O reactions with water vapor and the N O heterogeneous reactions with particle-bound water are important for secondary nitrate formation. The N O reactions are most import near the surface to a few hundred meters above surface with a maximum modeled net secondary nitrate increase rate of 1 μg·m ·d and are more significant in the rural areas where the O concentrations are high at night. In general, vertical transport during the day moves the nitrate formed near the surface to higher elevations. During the stagnant days, process analysis indicates that the nitrate concentration in the upper air builds up and leads to a net downward flux of nitrate through vertical diffusion and a rapid increase of surface nitrate concentration.

Keywords： secondary nitrate aerosol     N2O5 heterogeneous reaction     process analysis    

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Increasing significance of advanced physical/chemical processes in the development and application of

RULKENS Wim

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 4,   Pages 385-396 doi: 10.1007/s11783-008-0073-1

Abstract: only to a limited part, able to satisfy these needs, the role and significance of physical/chemical processesThe specific future role and aim of the various physical/chemical treatment processes can be categorizedin five groups: improvement of the performance of microbiological treatment processes, achievement ofDevelopment of more environmentally sustainable wastewater treatment chains in which physical/chemical processes

Keywords： control     beneficial     valuable     scarcity     Development    

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INTERFERENCE BY NON-HOST PLANT ROOTS AND ROOT EXUDATES IN THE INFECTION PROCESSES OF PHYTOPHTHORA NICOTIANAE

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 3,   Pages 447-459 doi: 10.15302/J-FASE-2021399

Abstract:

Crop rotations are widely used because they can significantly reduce the incidence of pests and diseases. The interactions between non-host roots and pathogens may be key in the inhibition of soilborne pathogens in crop rotations. Interactions between fennel (Foeniculum vulgare) roots/root exudates and Phytophthora nicotianae were investigated because of the known allelopathy between fennel and tobacco (Nicotiana tabacum). The effects of the key compounds in the fennel rhizosphere on the mycelial growth and zoospore behavior of P. nicotianae were assessed. The roots of fennel attracted P. nicotianae zoospores and inhibited their motility and the germination of cystospores, with some cystospores rupturing. 4-ethylacetophenone, vanillin and N-formylpiperidine were consistently identified in the fennel rhizosphere and were found to interfere with the infection of P. nicotianae, especially vanillin. Hyphae treated with these compounds produced more abnormal branches and accumulated reactive oxygen species. These interspecific interactions between non-host roots and pathogens were found to be an important factor in the inhibition by fennel of infection by P. nicotianae.

 

Keywords： fennel and tobacco rotation     infection behavior     Phytophthora nicotianae     reactive oxygen species     vanillin    

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Effect of distributions of fuel concentration and temperature on ignition processes in a diesel PCCI

Yang YU, Wanhua SU,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 269-279 doi: 10.1007/s11708-009-0046-5

Abstract: The distributions of fuel concentration and temperature have significant effect on the ignition processes

Keywords： PCCI     fuel stratification     multi-pulse injection     ignition    

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Title Author Date Type Operation

Modeling of hydrological processes in arid agricultural regions

Jiang LI,Xiaomin MAO,Shaozhong KANG,David A. BARRY

Journal Article

Effects of land use change on hydrological cycle from forest to upland field in a catchment, Japan

Chuan ZHANG, Keiji TAKASE, Hiroki OUE, Nobuhiro EBISU, Haofang YAN

Journal Article

Xin’anjiang Nested Experimental Watershed (XAJ-NEW) for Understanding Multiscale Water Cycle: Scientific Objectives and Experimental Design

Ke Zhang,Yunping Li,Zhongbo Yu,Tao Yang,Junzeng Xu,Lijun Chao,Jin Ni,Liutong Wang,Yun Gao,Yuzhong Hu,Zuoding Lin,

Journal Article

A review of hydrological/water-quality models

Liangliang GAO,Daoliang LI

Journal Article

Corrigendum to ‘‘A Comparison of SWAT Model Calibration Techniques for Hydrological Modeling in the Ganga

Nikita Shivhare, Prabhat Kumar Singh Dikshit, Shyam Bihari

Journal Article

Emerging electrochemical processes for materials recovery from wastewater: Mechanisms and prospects

Lingchen Kong, Xitong Liu

Journal Article

Trend detection and stochastic simulation prediction of streamflow at Yingluoxia hydrological station

Chenglong ZHANG,Mo LI,Ping GUO

Journal Article

A new approach for scheduling of multipurpose batch processes with unlimited intermediate storage policy

Nikolaos Rakovitis, Nan Zhang, Jie Li, Liping Zhang

Journal Article

Automated synthesis of steady-state continuous processes using reinforcement learning

Journal Article

Effectiveness of tertiary treatment processes in removing different classes of emerging contaminants

Journal Article

Fundamental influences of particles on stirred and unstirred venting processes of foaming systems

Henrik LEIMEISTER,Jörg STEINBACH

Journal Article

Physical and chemical processes of wintertime secondary nitrate aerosol formation

Qi YING

Journal Article

Increasing significance of advanced physical/chemical processes in the development and application of

RULKENS Wim

Journal Article

INTERFERENCE BY NON-HOST PLANT ROOTS AND ROOT EXUDATES IN THE INFECTION PROCESSES OF PHYTOPHTHORA NICOTIANAE

Journal Article

Effect of distributions of fuel concentration and temperature on ignition processes in a diesel PCCI

Yang YU, Wanhua SU,

Journal Article