1. Study on parameters optimization of coalbed gas drilling drainage by high pressure water jet
Accession number:20183405734390
Authors:Liu, Jialiang (1, 2, 3); Li, Kunyuan (1)
Author affiliation:(1) School of Civil Engineering, Chongqing Jiaotong University, Chongqing, China; (2) Engineering Research Center of Bridge Structure and Materials in Mountain Area, Chongqing Jiaotong University, Chongqing, China; (3) National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing, China
Corresponding author:Liu, Jialiang(liuacademic@hotmail.com)
Source title:IOP Conference Series: Earth and Environmental Science
Abbreviated source title:IOP Conf. Ser. Earth Environ. Sci.
Volume:170
Part number:2 of 5
Issue:2
Issue title:2nd International Symposium on Resource Exploration and Environmental Science - 1. Resource Exploration and Utilization, Geography and Geological Engineering
Issue date:July 17, 2018
Publication year:2018
Article number:022097
Language:English
ISSN:17551307
E-ISSN:17551315
Document type:Conference article (CA)
Conference name:2018 2nd International Symposium on Resource Exploration and Environmental Science, REES 2018
Conference date:April 28, 2018 - April 29, 2018
Conference location:Ordos, China
Conference code:138565
Publisher:Institute of Physics Publishing
Abstract:Coalbed gas is a kind of non-conventional energy with non-pollution and high-quality. High pressure water jet technology has many advantages in coalbed gas drilling drainage, due to no heat effect, high flexibility, and high surface quality. To reduce the energy consumption of this technology, especially for the hard coal rock, the water jet parameters optimization is studied in this paper. Based on an established three-dimensional damage numerical model and the orthogonal design tests, it analyzes the influence characteristic of different water jet parameters on coal bed gas drilling drainage and obtains the optimal water jet parameters combination finally. The results could improve the efficiency of high pressure water jet drilling drainage. © Published under licence by IOP Publishing Ltd.
Number of references:7
Main heading:Jet drilling
Controlled terms:Coal bed methane - Coal deposits - Drainage - Energy utilization - High pressure effects - Infill drilling - Jets - Petroleum prospecting - Rock drills
Uncontrolled terms:Coal-bed gas - Gas drillings - High flexibility - High-pressure water jets - Non-conventional energy - Orthogonal design test - Parameters optimization - Water jet parameters
Classification code:503 Mines and Mining, Coal
Mines and Mining, Coal
- 511.1 Oil Field Production Operations
Oil Field Production Operations
- 512.1.2 Petroleum Deposits : Development Operations
Petroleum Deposits : Development Operations
- 522 Gas Fuels
Gas Fuels
- 525.3 Energy Utilization
Energy Utilization
- 631.1 Fluid Flow, General
Fluid Flow, General
DOI:10.1088/1755-1315/170/2/022097
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
2. The Influence of Vent Setting on Salt Spray Dissipating in the Longitudinal Beam of Piled Beam-slab Wharfs
Accession number:20183405737265
Authors:Zhuang, Ning (1); Dong, Honghan (1); Li, Xinkai (2); Ma, Yeming (1)
Author affiliation:(1) College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing; 210098, China; (2) School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author:Zhuang, Ning(1037158873@qq.com)
Source title:IOP Conference Series: Earth and Environmental Science
Abbreviated source title:IOP Conf. Ser. Earth Environ. Sci.
Volume:170
Part number:3 of 5
Issue:3
Issue title:2nd International Symposium on Resource Exploration and Environmental Science - 2. Environmental Engineering and Sustainable Development
Issue date:July 17, 2018
Publication year:2018
Article number:032105
Language:English
ISSN:17551307
E-ISSN:17551315
Document type:Conference article (CA)
Conference name:2018 2nd International Symposium on Resource Exploration and Environmental Science, REES 2018
Conference date:April 28, 2018 - April 29, 2018
Conference location:Ordos, China
Conference code:138565
Publisher:Institute of Physics Publishing
Abstract:The salt spray gathering in the grillage space of piled beam-slab wharf could easily make the beams corroded in the harsh marine environment, which would cause an adverse impact on the durability of structure. The three dimension model of grillage space of piled beam-slab wharf was established by the fluid dynamic module CFD of ANSYS. Based on the results the vent setting was optimized, the result showed that the vent setting in the longitudinal beam could improve air flow distribution of grillage space effectively. As the distance between the vent and two ends of beam was about one meter, the dissipation effects for salt spray was most significant. © Published under licence by IOP Publishing Ltd.
Number of references:8
Main heading:Sustainable development
Controlled terms:Atmospheric corrosion - Computational fluid dynamics - Hydraulic structures - Natural resources exploration - Seawater corrosion - Vents
Uncontrolled terms:Air flow - Dissipation effects - Durability of structures - Dynamic modules - Marine environment - Salt spray - Three dimension modeling
Classification code:443.1 Atmospheric Properties
Atmospheric Properties
- 471.4 Seawater, Tides and Waves
Seawater, Tides and Waves
- 723.5 Computer Applications
Computer Applications
DOI:10.1088/1755-1315/170/3/032105
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
3. A geostatistical inverse approach to characterize the spatial distribution of deformability and shear strength of rock mass around an unlined rock cavern
Accession number:20183505755858
Authors:Gao, Xu (1, 3); Chuan Yan, E. (1); Yeh, Tian-Chyi Jim (2, 3); Cai, Jing-Sen (1); Liang, Yue (4); Wang, Min (5)
Author affiliation:(1) Faculty of Engineering, China University of Geosciences, Wuhan; 430074, China; (2) Key Laboratory for Water Environment and Resources, Tianjin Normal University, Tianjin, China; (3) Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson; AZ; 85721, United States; (4) National Engineering Research Center for Inland Waterway Regulation, Chongqing Jiaotong University, Chongqing; 400074, China; (5) College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao; 266590, China
Corresponding author:Yeh, Tian-Chyi Jim(yeh@hwr.arizona.edu)
Source title:Engineering Geology
Abbreviated source title:Eng. Geol.
Volume:245
Issue date:1 November 2018
Publication year:2018
Pages:106-119
Language:English
ISSN:00137952
CODEN:EGGOAO
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:A geostatistical back analysis is developed, which can map spatially distributed Young’s modulus (E′), cohesion (c′), and internal friction angle (′) in a rock mass by fusion of the observed displacement data from the excavation of an unlined rock cavern. It is tested and validated using numerical experiments with a synthetic heterogeneous rock mass, created with field observed spatial variability. Results of the experiments show that this approach yields unbiased estimates of E′, c′, and ′ fields and quantifies their uncertainty. Further, the estimated fields predict the plastic zone distribution and displacements of cavern periphery, which are nearly identical to those of the true field. © 2018 Elsevier B.V.
Number of references:49
Main heading:Rocks
Controlled terms:Caves - Elastic moduli - Rock mechanics - Shear strength - Spatial distribution - Uncertainty analysis
Uncontrolled terms:Displacement inversion - Heterogeneity - Heterogeneous rock mass - Internal friction angle - Linear estimators - Plastic zone distribution - Rock cavern - Shear strength of rock mass
Classification code:481.1 Geology
Geology
- 483.1 Soils and Soil Mechanics
Soils and Soil Mechanics
- 921 Mathematics
Mathematics
- 922.1 Probability Theory
Probability Theory
- 951 Materials Science
Materials Science
DOI:10.1016/j.enggeo.2018.08.007
Funding Details: Number; Acronym; Sponsor:201606410033; CSC; China Scholarship Council - Number; Acronym; Sponsor:41172282; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor:41672313; NSFC; National Natural Science Foundation of China
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
4. Wave resistance determination by pressure integration and wave cut analysis using non-linear rankine panel method
Accession number:20183505742834
Authors:Yu, Min (1); Falzarano, Jeffrey (2)
Author affiliation:(1) Department of Ocean and Naval Engineering, Chongqing Jiaotong University, Chongqing, China; (2) Department of Ocean Engineering, Texas A&M University, College Station; TX, United States
Corresponding author:Yu, Min(zjkyumin@163.com)
Source title:Ships and Offshore Structures
Abbreviated source title:Ships Offshore Struct.
Issue date:2018
Publication year:2018
Language:English
ISSN:17445302
Document type:Article in Press
Publisher:Taylor and Francis Ltd.
Abstract:This study explored the numerical method to calculate wave-making resistance. The fully non-linear Rankine source method was implemented in a computer program in this paper. Using the results from the Rankine source method, the wave resistance was calculated by the direct pressure integral and the multiple transverse wave cut analysis. The wave resistance of the Wigley and Series 60 ((Formula presented.) =0.6,0.7,0.8) hulls were calculated using both methods and compared against the experimental data. Results obtained through a combination of the Rankine source method and the wave cut analysis appears this combination is an effective way to calculate the wave-making resistance, especially for full-form hulls at high Froude numbers. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.
Number of references:20
Main heading:Numerical methods
Controlled terms:Experiments - Flow measurement - Hydrodynamics
Uncontrolled terms:direct pressure integral - Non linear - Panel methods - Rankine - Rankine source methods - Transverse waves - Wave resistance - Wave-making resistances
Classification code:631.1 Fluid Flow, General
Fluid Flow, General
- 901.3 Engineering Research
Engineering Research
- 921.6 Numerical Methods
Numerical Methods
DOI:10.1080/17445302.2018.1505699
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
5. Strength criteria and slipping planes of anisotropic sand considering direction of major principal stress
Accession number:20183505757793
Title of translation:
Authors:Dong, Tong (1, 2); Zheng, Ying-Ren (1, 2); Kong, Liang (3); Zhe, Mei (4)
Author affiliation:(1) Chongqing Key Laboratory of Geomechanics and Geoenvironmental Protection, Army Logistical University of PLA, Chongqing; 401311, China; (2) Chongqing Engineering and Technology Research Center of Geological Hazard Prevention and Treatment, Chongqing; 400041, China; (3) School of Sciences, Qingdao Technological University, Qingdao; 266033, China; (4) Institute of Material Science and Engineering, Chongqing Jiao Tong University, Chongqing; 400074, China
Source title:Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering
Abbreviated source title:Yantu Gongcheng Xuebao
Volume:40
Issue:4
Issue date:April 1, 2018
Publication year:2018
Pages:736-742
Language:Chinese
ISSN:10004548
CODEN:YGXUEB
Document type:Journal article (JA)
Publisher:Chinese Society of Civil Engineering
Abstract:The effect of directions of the principal stress on the deformation and strength of sand is due to the anisotropy of soils. The shear strength on a certain plane of the cross-isotropic sand is larger when the angle between this plane and the bedding plane is larger. Assuming that the intrinsic anisotropy strength of sand is closely related to the anisotropy parameter of the plane, the peak strength of anisotropic soils is presented. As the shear-normal stress ratio of each potential slipping plane of the SMP criterion is the same, the shear strength and position of the slipping plane are determined by the potential slipping plane with the lowest shear strength. On this basis, an anisotropic strength criterion is proposed by considering the relationship among the principal stress axis, the slipping plane and the bedding plane. A series of shear tests with fixed direction of the major principal stress are carried out using Fujian standard sand in order to systematically observe the slipping plane of the specimens. Comparison between the predicted data and the measured results indicates that the anisotropic model can well reflect the strength and the position of the slipping plane of the anisotropic soils. © 2018, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.
Number of references:19
Main heading:Anisotropy
Controlled terms:Sand - Soils
Uncontrolled terms:Anisotropic strength criterion - Anisotropy parameters - Deformation and strength - Intrinsic anisotropy - Major principal stress - Principal stress - Spatially mobilized planes - Strength criteria
Classification code:483.1 Soils and Soil Mechanics
Soils and Soil Mechanics
- 931.2 Physical Properties of Gases, Liquids and Solids
Physical Properties of Gases, Liquids and Solids
DOI:10.11779/CJGE201804018
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
6. Study on the effect of demulsification speed of emulsified asphalt based on surface characteristics of aggregates
Accession number:20183505750722
Authors:Tang, Fanlong (1); Xu, Guangji (1); Ma, Tao (1); Kong, Lingyun (2)
Author affiliation:(1) School of Transportation, Southeast University, Nanjing, Jiangsu; 210096, China; (2) School of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author:Ma, Tao(matao@seu.edu.cn)
Source title:Materials
Abbreviated source title:Mater.
Volume:11
Issue:9
Issue date:August 21, 2018
Publication year:2018
Article number:1488
Language:English
E-ISSN:19961944
Document type:Journal article (JA)
Publisher:MDPI AG, Postfach, Basel, CH-4005, Switzerland
Abstract:Aggregate is an indispensable raw material for emulsified asphalt construction. For the purpose of explaining the influence of aggregate characteristics on the demulsification speed of emulsified asphalt, the surface energy and specific surface area (SSA) characteristics of aggregates were calculated based on the capillary rise method and the BET (Brunauer-Emmett-Teller) adsorption test. Afterwards, the effect of the surface energy and specific surface area of the aggregate on the emulsified asphalt demulsification speed was systematically studied by using ultraviolet spectroscopy as well as the orthogonal test. Experimental results indicate that the specific surface energy parameter of the aggregate is certainly related to the particle size of the aggregate. That is, the surface free energy of the unit system is proportional to the surface area A and the density of the interface unit. The specific surface area parameter of aggregates increases with the decrease of particle size, when the particle size is reduced to 600 mesh, the specific surface area parameters of the three aggregates selected in this paper tend to be consistent. Orthogonal experimental analysis demonstrates that the surface energy and specific surface area have an impact on the emulsion breaking speed and they are proven to be positively correlated. Meanwhile, in the case of small particle sizes, there is no statistically significant correlation between the physical properties of aggregates and the demulsification speed of emulsified asphalt, and the physical property of aggregates is not the main factor that affects the demulsification speed of the emulsified asphalt. On the contrary, the material properties of the aggregate, such as acid-base property and chargeability, are the dominant factors. © 2018 by the authors.
Number of references:33
Main heading:Aggregates
Controlled terms:Asphalt - Demulsification - Emulsification - Free energy - Interfacial energy - Lime - Particle size - Specific surface area - Speed - Ultraviolet spectroscopy
Uncontrolled terms:Aggregate characteristics - Brunauer emmett tellers - Capillary-rise method - Emulsified asphalts - Limestone aggregates - Specific surface area (SSA) - Specific surface energy - Surface characteristics
Classification code:406 Highway Engineering
Highway Engineering
- 411.1 Asphalt
Asphalt
- 641.1 Thermodynamics
Thermodynamics
- 802.3 Chemical Operations
Chemical Operations
- 804.2 Inorganic Compounds
Inorganic Compounds
DOI:10.3390/ma11091488
Funding Details: Number; Acronym; Sponsor:51378006; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor:51878164; NSFC; National Natural Science Foundation of China - Number; Sponsor:BK20140112; Natural Science Foundation of Jiangsu Province - Number; Sponsor:BK20161421; Natural Science Foundation of Jiangsu Province
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
7. Experimental study on residual bending strength of corroded reinforced concrete beam based on micromagnetic sensor
Accession number:20183505742018
Authors:Zhou, Jianting (1); Qiu, Junli (1); Zhou, Yingxin (2); Zhou, Yi (3); Xia, Runchuan (1)
Author affiliation:(1) College of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) Yunnan Wuyi Expressway Construction Command, Kunming; 650000, China; (3) Chongqing Yapai Bridge Engineering Quality Inspection Co., Ltd., Chongqing; 401120, China
Corresponding author:Zhou, Jianting(jtzhou@cqjtu.edu.cn)
Source title:Sensors (Switzerland)
Abbreviated source title:Sensors
Volume:18
Issue:8
Issue date:August 11, 2018
Publication year:2018
Article number:2635
Language:English
ISSN:14248220
Document type:Journal article (JA)
Publisher:MDPI AG, Postfach, Basel, CH-4005, Switzerland
Abstract:This paper presents a nondestructive test method to evaluate the residual bending strength of corroded reinforced concrete beam by analyzing the self-magnetic flux leakage (SMFL) signals. The automatic scanning device was equipped with a micromagnetic sensor and sensor-based experimental details were introduced. Next, the theoretical formula of the normal component HS(z) of the SMFL signal that originated from the corroded region was derived based on the magnetic dipole model and the experimental results were discussed. The results indicate that the experimental data of HS(z) are consistent with the theoretical calculations, both location and extent of the steel bars corrosion can be qualitatively determined by using HS(z). The gradient K of HS(z) is approximately linearly related to the loss rate, S, of the bending strength, which can be used to evaluate the residual bending strength of the corroded reinforced concrete beam. This work lays the foundation for evaluating the residual bending strength of corroded reinforced concrete beams using the SMFL signal; the micromagnetic sensor is further applied to the civil engineering. © 2018 by the authors. Licensee MDPI, Basel, Switzerland.
Number of references:36
Main heading:Bending strength
Controlled terms:Concrete beams and girders - Magnetic leakage - Nondestructive examination - Reinforced concrete - Steel corrosion
Uncontrolled terms:Automatic scanning - Corroded reinforced concrete beams - Magnetic dipole model - Micro-magnetic sensors - Non-destructive test methods - Self-magnetic fluxes - Theoretical calculations - Theoretical formula
Classification code:412 Concrete
Concrete
- 539.1 Metals Corrosion
Metals Corrosion
- 701.2 Magnetism: Basic Concepts and Phenomena
Magnetism: Basic Concepts and Phenomena
DOI:10.3390/s18082635
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
8. Analysis the Sources of Water Pollution in Construction Area of Expressway around Shaoqing reservoir
Accession number:20183405737227
Authors:Zeng, Weicheng (1); Yue, Ruiqiang (1); Zou, Yunfei (2); Xie, Jialin (2); Luo, Xin (2)
Author affiliation:(1) Yunnan Wuyi Expressway Construction Command, Kunming, China; (2) School of River and Ocean Engineering, Chongqing Jiao Tong University, Chongqing, China
Corresponding author:Zou, Yunfei(305900503@163.com)
Source title:IOP Conference Series: Earth and Environmental Science
Abbreviated source title:IOP Conf. Ser. Earth Environ. Sci.
Volume:170
Part number:3 of 5
Issue:3
Issue title:2nd International Symposium on Resource Exploration and Environmental Science - 2. Environmental Engineering and Sustainable Development
Issue date:July 17, 2018
Publication year:2018
Article number:032067
Language:English
ISSN:17551307
E-ISSN:17551315
Document type:Conference article (CA)
Conference name:2018 2nd International Symposium on Resource Exploration and Environmental Science, REES 2018
Conference date:April 28, 2018 - April 29, 2018
Conference location:Ordos, China
Conference code:138565
Publisher:Institute of Physics Publishing
Abstract:Highway is an important national infrastructure and plays an important role in the development of national economy. Owing to the long construction period of the highway, across the surface water and other characteristics, many kinds of harmful substances are very easy to pollute the water and exert great disturbance to the environment and ecology. In order to further improve the “ecological civilization” of expressway construction and fully implement the requirements for the construction of low-carbon highway, this paper combines the changes of water quality in the construction stages of the Shaoqing reservoir in Kunming City, analyses the change of pollution sources on the water quality and gives the corresponding preventive measures for the construction of environmental protection. © Published under licence by IOP Publishing Ltd.
Number of references:5
Main heading:Reservoirs (water)
Controlled terms:Environmental protection - Natural resources exploration - River pollution - Surface waters - Sustainable development - Water quality
Uncontrolled terms:Construction period - Construction stages - Expressway construction - Harmful substances - National economy - National infrastructure - Pollution sources - Preventive measures
Classification code:441.2 Reservoirs
Reservoirs
- 444.1 Surface Water
Surface Water
- 445.2 Water Analysis
Water Analysis
- 453 Water Pollution
Water Pollution
- 454.2 Environmental Impact and Protection
Environmental Impact and Protection
DOI:10.1088/1755-1315/170/3/032067
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
9. The effect of a pesticide plant demolition on the concentration of DDTs in its surrounding soils
Accession number:20183505757860
Title of translation:DDTs
Authors:Li, Kai-Huan (1, 2); Nie, Zhi-Qiang (2); Die, Qing-Qi (2); Fang, Yan-Yan (2); Zhu, Xue-Mei (2); Wang, Jian-Yuan (2); Yang, Yan-Mei (1); Huang, Qi-Fei (2)
Author affiliation:(1) School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) Institute of Soil and Solid Waste, Chinese Research Academy of Environmental Sciences, Beijing; 100012, China
Corresponding author:Nie, Zhi-Qiang(niezq@craes.org.cn)
Source title:Zhongguo Huanjing Kexue/China Environmental Science
Abbreviated source title:Zhongguo Huanjing Kexue
Volume:38
Issue:2
Issue date:February 20, 2018
Publication year:2018
Pages:658-664
Language:Chinese
ISSN:10006923
CODEN:ZHKEEI
Document type:Journal article (JA)
Publisher:Chinese Society for Environmental Sciences
Abstract:The concentrations, distributions and compositions of DDTs in surrounding soils collected four times from a closed pesticides manufacturing plant were studied, respectively, before and after the demolition of the plant. The results showed that the concentrations of DDTs (average 334ng/g) in soils collected one month after the plant demolished were higher than those obtained (average 97.0ng/g) two months before the demolition. After that, a significant decrease was seen for the concentration of DDTs in surrounding soils. Before demolistion, p,p’-DDE (average 35.6ng/g) and p,p’-DDD (average 31.0ng/g) were the main congeners in surrounding soils, whilist p,p’-DDT(average 289ng/g) was the predominant congener in the soils after demolition, which was about 28.9tims of that detected in surrounding soils before the plant demolition. The historical production of technical DDT and usage of dicofol in surrounding agricultural soils were the main reasons for the concentrations of DDTs in surrounding soils, while the volatilization of technical DDTs was the main contribution for the concentration of DDTs in surrounding soils during the plant demolishing. The spatial distribution of DDT concentrations in surrounding soil is usually dominated by the wind, and the east wind is the prevailing wind direction in this area, which resulted in higher concentrations of DDTs in the western area than those in the eastern area both before and after the plant demolished. © 2018, Editorial Board of China Environmental Science. All right reserved.
Number of references:29
Main heading:Soils
Controlled terms:Concentration (process) - Demolition - Pesticides
Uncontrolled terms:A closed pesticide plant - Agricultural soils - DDTs - Distribution characteristics - Historical production - Manufacturing plant - Prevailing wind directions - Surrounding soils
Classification code:483.1 Soils and Soil Mechanics
Soils and Soil Mechanics
- 803 Chemical Agents and Basic Industrial Chemicals
Chemical Agents and Basic Industrial Chemicals
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
10. Invariant Borel probability measures for discrete long-wave-short-wave resonance equations
Accession number:20183505755813
Authors:Wang, Chengzhi (1, 2); Xue, Gang (3); Zhao, Caidi (3)
Author affiliation:(1) School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) National Engineering Research Center for Inland Waterway Regulation, Chongqing; 400074, China; (3) Department of Mathematics and Information Science, Wenzhou University, Wenzhou; Zhejiang; 325035, China
Corresponding author:Zhao, Caidi(zhaocaidi2013@163.com)
Source title:Applied Mathematics and Computation
Abbreviated source title:Appl. Math. Comput.
Volume:339
Issue date:15 December 2018
Publication year:2018
Pages:853-865
Language:English
ISSN:00963003
CODEN:AMHCBQ
Document type:Journal article (JA)
Publisher:Elsevier Inc.
Abstract:In this article we study the Borel probability measures that can be associated to the time averaged observation of the process generated by the non-autonomous long-wave-short-wave resonance equations on infinite lattices, via the notion of generalized Banach limit. We establish that the generated process possesses a pullback-D attractor, and further prove that there exists a unique family of invariant Borel probability measures carried by the pullback attractor. © 2018 Elsevier Inc.
Number of references:39
Main heading:Resonance
Controlled terms:Dynamical systems - Probability
Uncontrolled terms:Borel probability measures - Infinite lattices - Invariant measure - Lattice dynamical systems - Nonautonomous - Pullback attractors - Short waves - Time-averaged observations
Classification code:922.1 Probability Theory
Probability Theory
- 931.1 Mechanics
Mechanics
DOI:10.1016/j.amc.2018.06.059
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
11. Alkaline phosphatase activity of Jialing River estuary
Accession number:20183505757864
Title of translation:
Authors:Wang, Min (1); Yuan, Shao-Chun (1); Meng, Cai-Xia (1); Xu, Wei (1); Zhang, Teng-Can (2)
Author affiliation:(1) Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University, Chongqing; 400074, China; (2) Chengdu Municipal Engineering Design Institute, Chengdu; 610015, China
Corresponding author:Yuan, Shao-Chun(yuansc@cqjtu.edu.cn)
Source title:Zhongguo Huanjing Kexue/China Environmental Science
Abbreviated source title:Zhongguo Huanjing Kexue
Volume:38
Issue:2
Issue date:February 20, 2018
Publication year:2018
Pages:694-699
Language:Chinese
ISSN:10006923
CODEN:ZHKEEI
Document type:Journal article (JA)
Publisher:Chinese Society for Environmental Sciences
Abstract:This paper investigated the interrelationship between phosphorus status, change of total alkaline phosphatase activities (TAPA), and algae bloom of the Jialing River Chongqing section from 2011 to 2016. The changes of TAPA, ALGAE and SRP were summarized through in-situ experiments. The activity parameters of alkaline phosphatase were determined, and the ecological significance of enzyme activity in algal bloom was discussed. The results showed that Soluble Reactive Phosphorus (SRP) was the main source of phosphorus for algae growth. The lowest SRP detected as 0.012~0.021mg/L was observed during the critical period of algae bloom, and the highest TAPA was 10.503~11.587nmol/L/min. The variations of characteristic parameters Vm and the Michaelis~Menten constant Km validated that alkaline phosphatase had a higher affinity for substrate and the hydrolysis rate of the enzyme increased significantly during the critical period of algae bloom. It is also found that alkaline phosphatase significantly promoted the transformation of other forms of phosphorus into SRP, thus supplying adequate SRP to the growth of microorganisms such as algae. © 2018, Editorial Board of China Environmental Science. All right reserved.
Number of references:31
Main heading:Phosphatases
Controlled terms:Algae - Enzyme activity - Eutrophication - Phosphorus - River pollution
Uncontrolled terms:Algae blooms - ALkaline phosphatase - Alkaline phosphatase activity - Critical periods - Hydrolysis rate - In-situ experiments - Receding period - Soluble reactive phosphorus
Classification code:453 Water Pollution
Water Pollution
- 461.9 Biology
Biology
- 804 Chemical Products Generally
Chemical Products Generally
Numerical data indexing:Mass_Density 1.20e-05kg/m3 to 2.10e-05kg/m3
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
