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Pesquisa : N06.850.780.200.800.800.350 [Categoria DeCS]
Referências encontradas : 553 [refinar]
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  1 / 553 MEDLINE  
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[PMID]:29187322
[Au] Autor:Jagai JS; DeFlorio-Barker S; Lin CJ; Hilborn ED; Wade TJ
[Ad] Endereço:Division of Environmental and Occupational Health Sciences, School of Public Health, University of Illinois at Chicago, Chicago, Illinois, USA.
[Ti] Título:Sanitary Sewer Overflows and Emergency Room Visits for Gastrointestinal Illness: Analysis of Massachusetts Data, 2006-2007.
[So] Source:Environ Health Perspect;125(11):117007, 2017 11 28.
[Is] ISSN:1552-9924
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Sanitary sewer overflows (SSOs) occur when untreated sewage is discharged into water sources before reaching the treatment facility, potentially contaminating the water source with gastrointestinal pathogens. OBJECTIVES: The objective of this paper is to assess associations between SSO events and rates of gastrointestinal (GI) illness in Massachusetts. METHODS: A case-crossover study design was used to investigate association between SSO events and emergency room (ER) visits with a primary diagnosis of gastrointestinal (GI) illness in Massachusetts for 2006-2007. ER visits for GI were considered exposed if an SSO event occurred in the county of residence within three hazard periods, 0-4 d, 5-9 d, or 10-14 d, before the visit. A time-stratified bidirectional design was used to select control days for each ER visit on the same day of the week during the same month. Fixed effect logistic regression models were used to estimate the risk of ER visits following the SSO event. RESULTS: During the study period, there were 270 SSO events for northeastern Massachusetts and 66,460 ER admissions with GI illness listed as the primary diagnostic code. The overall odds ratio (OR) for ER visits for GI illness was 1.09 [95% confidence interval (CI): 1.03, 1.16] in the 10-14 d period following an SSO event, with positive ORs for all age groups and for three of the four counties. The 0-4 d and 5-9 d periods following an SSO event were not associated with ER visits for GI illness overall, and associations by county or age were inconsistent. CONCLUSIONS: We demonstrated an association between SSO events and ER visits for GI illness using a case-crossover study design. In light of the aging water infrastructure in the United States and the expected increase in heavy rainfall events, our findings suggest a potential health impact associated with sewage overflows. https://doi.org/10.1289/EHP2048.
[Mh] Termos MeSH primário: Drenagem Sanitária/estatística & dados numéricos
Gastroenteropatias/epidemiologia
Hospitalização/estatística & dados numéricos
[Mh] Termos MeSH secundário: Serviço Hospitalar de Emergência
Seres Humanos
Modelos Logísticos
Massachusetts/epidemiologia
Esgotos
Eliminação de Resíduos Líquidos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Sewage)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180206
[Lr] Data última revisão:
180206
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171201
[St] Status:MEDLINE
[do] DOI:10.1289/EHP2048


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[PMID]:28456381
[Au] Autor:Varin A; Valot B; Cholley P; Morel C; Thouverez M; Hocquet D; Bertrand X
[Ad] Endereço:Hygiène Hospitalière, Centre Hospitalier Régional Universitaire, Besançon, France.
[Ti] Título:High prevalence and moderate diversity of Pseudomonas aeruginosa in the U-bends of high-risk units in hospital.
[So] Source:Int J Hyg Environ Health;220(5):880-885, 2017 07.
[Is] ISSN:1618-131X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:The presence of P. aeruginosa in water supply is clearly identified as a risk factor for P. aeruginosa infection in critical care units, even if routes of transmission are often unclear and remain a matter of debate. We determined here the frequency of U-bends contaminated with P. aeruginosa in high-risk units and described the population structure of this opportunistic pathogen in a non-outbreak situation. Eighty-seven U-bends from sinks of rooms in five wards were sampled 3 times and P. aeruginosa was detected in 121 of the 261 (46.4%) U-bend samples. We genotyped 123 P. aeruginosa isolates with pulsed-field gel electrophoresis and multilocus sequence typing and found 41 pulsotypes distributed in 21 Sequence Types (STs). Seven major ST (ST111, CC235, CC253, ST520, ST539, ST1216, and ST1725) were overrepresented in the collection, including the high-risk clones ST111, CC253, and CC235. The distribution of the 21 STs in the cladogram of the species was uneven with most major STs clustering into 2 clades. The major STs were found in different units and buildings and could be represented by a high diversity of pulsotypes. Altogether, this suggests a long term presence of P. aeruginosa in the hospital water network, possibly contaminated by the distribution water or by plumbing fittings before putting into service. Analysis of resistance rates showed that the deficiency of porin OprD was very frequent in U-bends isolates that may benefit from this resistance mechanism in hospital water fittings. In conclusion, our study demonstrates that U-bends of high-risk units are very frequently contaminated with P. aeruginosa with a moderate genomic diversity and with an over-representation of adapted clones.
[Mh] Termos MeSH primário: Drenagem Sanitária
Unidades de Terapia Intensiva
Pseudomonas aeruginosa/isolamento & purificação
Poluentes da Água/isolamento & purificação
[Mh] Termos MeSH secundário: Antibacterianos/farmacologia
Farmacorresistência Bacteriana
Monitoramento Ambiental
Variação Genética
Genótipo
Hospitais
Pseudomonas aeruginosa/efeitos dos fármacos
Pseudomonas aeruginosa/genética
Microbiologia da Água
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Anti-Bacterial Agents); 0 (Water Pollutants)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:180206
[Lr] Data última revisão:
180206
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170501
[St] Status:MEDLINE


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[PMID]:29261733
[Au] Autor:Liu X; Cao Y; Xue T; Wu R; Zhou Y; Zhou C; Zanatta DT; Ouyang S; Wu X
[Ad] Endereço:Poyang Lake Key Laboratory of Environment and Resource Utilization (Nanchang University), Ministry of Education, Nanchang, People's Republic of China.
[Ti] Título:Genetic structure and diversity of Nodularia douglasiae (Bivalvia: Unionida) from the middle and lower Yangtze River drainage.
[So] Source:PLoS One;12(12):e0189737, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The Yangtze River drainage in China is among the most species rich rivers for freshwater mussels (order Unionida) on Earth with at least 68 species known. The freshwater mussels of the Yangtze River face a variety of threats with indications that species are declining in abundance and area of occupancy. This study represents the first analyses of the genetic structure and diversity for the common and widespread freshwater mussel Nodularia douglasiae based on microsatellite DNA genotypes and mitochondrial DNA sequences. Phylogenetic analysis a fragment of the COI mitochondrial gene indicated that N. douglasiae collected from across the middle and lower Yangtze River drainage are monophyletic with N. douglasiae from Japan, Russia, and South Korea. The results of the analysis of both the mtDNA and microsatellite datasets indicated that the seven collection locations of N. douglasiae in the middle and lower Yangtze River drainage showed high genetic diversity, significant genetic differentiation and genetic structure, and stable population dynamics over time. Moreover, we found that the connections among tributaries rivers and lakes in the Yangtze River drainage were important in maintaining gene flow among locations that N. douglasiae inhabits. An understanding of the genetic structure and diversity of a widespread species like N. douglasiae could be used as a surrogate to better understand the populations of other freshwater mussel species that are more rare in the Yangtze River drainage. At the same time, these results could provide a basis for the protection of genetic diversity and management of unionid mussels diversity and other aquatic organisms in the system.
[Mh] Termos MeSH primário: Drenagem Sanitária
Variação Genética
Rios
Unionidae/genética
[Mh] Termos MeSH secundário: Animais
Sequência de Bases
Teorema de Bayes
China
DNA Mitocondrial/genética
Complexo IV da Cadeia de Transporte de Elétrons/genética
Fluxo Gênico
Genética Populacional
Genótipo
Geografia
Haplótipos/genética
Repetições de Microssatélites/genética
Filogenia
Análise de Componente Principal
Tamanho da Amostra
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Mitochondrial); EC 1.9.3.1 (Electron Transport Complex IV)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180108
[Lr] Data última revisão:
180108
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171221
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0189737


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[PMID]:28888237
[Au] Autor:Lagmay AM; Mendoza J; Cipriano F; Delmendo PA; Lacsamana MN; Moises MA; Pellejera N; Punay KN; Sabio G; Santos L; Serrano J; Taniza HJ; Tingin NE
[Ad] Endereço:National Institute of Geological Sciences, University of the Philippines, Quezon City 1101, Philippines; Nationwide Operational Assessment of Hazards Phil-LiDAR 1 Flood Modelling Component, UP NIGS, Quezon City 1101, Philippines. Electronic address: amfal2@yahoo.com.
[Ti] Título:Street floods in Metro Manila and possible solutions.
[So] Source:J Environ Sci (China);59:39-47, 2017 Sep.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Urban floods from thunderstorms cause severe problems in Metro Manila due to road traffic. Using Light Detection and Ranging (LiDAR)-derived topography, flood simulations and anecdotal reports, the root of surface flood problems in Metro Manila is identified. Majority of flood-prone areas are along the intersection of creeks and streets located in topographic lows. When creeks overflow or when rapidly accumulated street flood does not drain fast enough to the nearest stream channel, the intersecting road also gets flooded. Possible solutions include the elevation of roads or construction of well-designed drainage structures leading to the creeks. Proposed solutions to the flood problem of Metro Manila may avoid paralyzing traffic problems due to short-lived rain events, which according to Japan International Cooperation Agency (JICA) cost the Philippine economy 2.4billionpesos/day.
[Mh] Termos MeSH primário: Cidades/estatística & dados numéricos
Drenagem Sanitária/métodos
Inundações/estatística & dados numéricos
Urbanização/tendências
[Mh] Termos MeSH secundário: Filipinas
Chuvas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170915
[Lr] Data última revisão:
170915
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170911
[St] Status:MEDLINE


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[PMID]:28779427
[Au] Autor:Kumwimba MN; Zhu B; Muyembe DK
[Ad] Endereço:Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, 610041, Chengdu, People's Republic of China.
[Ti] Título:Estimation of the removal efficiency of heavy metals and nutrients from ecological drainage ditches treating town sewage during dry and wet seasons.
[So] Source:Environ Monit Assess;189(9):434, 2017 Sep.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Vegetated drainage ditches (ecological drainage ditches, EDD) are commonly used for the treatment of nutrients, suspended solids, and pesticides, from agricultural lands and aquaculture effluent. However, their effectiveness to remove heavy metals/metalloids (HM/Ms) and fate remains largely unexplored. In addition, there exists some uncertainty concerning the performance of the EDD in treating HM/Ms. This study presents a thorough assessment on the removal efficiencies of HM/Ms and identifies the parameters affecting the HM/Ms removal process in the EDD receiving primary domestic sewage for 13 years. The mean concentrations of the studied HM/Ms in sediments were lower than those reported in the aquatic ecosystems affected by coal-mine drainage and industrial wastewaters. The results also showed that the concentrations of the selected HM/Ms in ditch sediment were generally far higher than the soil background values of Sichuan basin. Concentrations of all the studied HM/Ms and nutrients in water entering the EDD were significantly higher than the effluent. The annual mean removal efficiencies of Ni, Cu, Cr, Zn, Cd, Pb, As, Fe, Al, Mn, N, and P in the ecological drainage ditch were 50.6, 56.1, 63.3, 79.3, 67.5, 80.1, 60.3, 52.6, 19.8, 24.3, 72.0, and 59.7%, respectively. The study also displayed that dissolved oxygen levels at the outlet were significantly (p < 0.001) higher after passing into the EDD system. The pH was kept at neutral or alkaline. Removal of HM/Ms and nutrients was seasonal, generally peaking in the growing season. Sedimentation was the major mechanism removing HM/Ms within the EDD system. EDD was found to possess a favorable influence at mitigating HM/Ms and nutrients in situ and can be successfully utilized to resolve this type of environmental pollution.
[Mh] Termos MeSH primário: Drenagem Sanitária/métodos
Metais Pesados/análise
Eliminação de Resíduos Líquidos/métodos
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Ecologia
Ecossistema
Monitoramento Ambiental/métodos
Sedimentos Geológicos
Metaloides
Estações do Ano
Esgotos
Solo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Metalloids); 0 (Metals, Heavy); 0 (Sewage); 0 (Soil); 0 (Water Pollutants, Chemical)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170806
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-6136-7


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[PMID]:28772140
[Au] Autor:Dong X; Guo H; Zeng S
[Ad] Endereço:School of Environment, Tsinghua University, Beijing, 100084, China; Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, China.
[Ti] Título:Enhancing future resilience in urban drainage system: Green versus grey infrastructure.
[So] Source:Water Res;124:280-289, 2017 Nov 01.
[Is] ISSN:1879-2448
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In recent years, the concept transition from fail-safe to safe-to-fail makes the application of resilience analysis popular in urban drainage systems (UDSs) with various implications and quantifications. However, most existing definitions of UDSs resilience are confined to the severity of flooding, while uncertainties from climate change and urbanization are not considered. In this research, we take into account the functional variety, topological complexity, and disturbance randomness of UDSs and define a new formula of resilience based on three parts of system severity, i.e. social severity affected by urban flooding, environmental severity caused by sewer overflow, and technological severity considering the safe operation of downstream facilities. A case study in Kunming, China is designed to compare the effect of green and grey infrastructure strategies on the enhancement of system resilience together with their costs. Different system configurations with green roofs, permeable pavement and storage tanks are compared by scenario analysis with full consideration of future uncertainties induced by urbanization and climate change. The research contributes to the development of sustainability assessment of urban drainage system with consideration of the resilience of green and grey infrastructure under future change. Finding the response measures with high adaptation across a variety of future scenarios is crucial to establish sustainable urban drainage system in a long term.
[Mh] Termos MeSH primário: Mudança Climática
Planejamento Ambiental
Inundações
[Mh] Termos MeSH secundário: China
Cidades
Drenagem Sanitária
Modelos Teóricos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171018
[Lr] Data última revisão:
171018
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170804
[St] Status:MEDLINE


  7 / 553 MEDLINE  
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[PMID]:28759446
[Au] Autor:Beceiro P; Almeida MDC; Matos J
[Ad] Endereço:Hydraulic and Environment Department (DHA), National Laboratory for Civil Engineering, Avenida do Brasil 101, 1700-066 Lisbon, Portugal E-mail: pbeceiro@lnec.pt.
[Ti] Título:Numerical modelling of air-water flows in sewer drops.
[So] Source:Water Sci Technol;76(3-4):642-652, 2017 Jul.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The presence of dissolved oxygen (DO) in water flows is an important factor to ensure the aerobic conditions recognised as beneficial to preventing the occurrence of detrimental effects. The incorporation of DO in wastewater flowing in sewer systems is a process widely investigated in order to quantify the effect of continuous reaeration through the air-liquid interface or air entrained due to the presence of singularities such as drops or junctions. The location of sewer drops to enhance air entrainment and subsequently reaeration is an effective practice to promote aerobic conditions in sewers. In the present paper, vertical drops, backdrops and stepped drops were modelled using the computational fluid dynamics (CFD) code FLOW-3D to evaluate the air-water flows due to the turbulence induced by the presence of these types of structures. An assessment of the hydraulic variables and an analysis of the air entrainment based on the available experimental studies were carried out. The results of the CFD models for these structures were validated using measurements of discharge, pressure head and water depth obtained in the corresponding physical models. A very good fit was obtained for the hydraulic behaviour. After validation of numerical models, analysis of the air entrainment was carried out.
[Mh] Termos MeSH primário: Drenagem Sanitária
Águas Residuais
Movimentos da Água
[Mh] Termos MeSH secundário: Modelos Teóricos
Oxigênio/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Waste Water); S88TT14065 (Oxygen)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171013
[Lr] Data última revisão:
171013
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170801
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2017.246


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[PMID]:28536909
[Au] Autor:Melcher AA; Horsburgh JS
[Ad] Endereço:Department of Civil and Environmental Engineering and Utah Water Research Laboratory, Utah State University, 8200 Old Main Hill, Logan, UT, 84322-8200, USA. tmelcher@aggiemail.usu.edu.
[Ti] Título:An urban observatory for quantifying phosphorus and suspended solid loads in combined natural and stormwater conveyances.
[So] Source:Environ Monit Assess;189(6):285, 2017 Jun.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Water quality in urban streams and stormwater systems is highly dynamic, both spatially and temporally, and can change drastically during storm events. Infrequent grab samples commonly collected for estimating pollutant loadings are insufficient to characterize water quality in many urban water systems. In situ water quality measurements are being used as surrogates for continuous pollutant load estimates; however, relatively few studies have tested the validity of surrogate indicators in urban stormwater conveyances. In this paper, we describe an observatory aimed at demonstrating the infrastructure required for surrogate monitoring in urban water systems and for capturing the dynamic behavior of stormwater-driven pollutant loads. We describe the instrumentation of multiple, autonomous water quality and quantity monitoring sites within an urban observatory. We also describe smart and adaptive sampling procedures implemented to improve data collection for developing surrogate relationships and for capturing the temporal and spatial variability of pollutant loading events in urban watersheds. Results show that the observatory is able to capture short-duration storm events within multiple catchments and, through inter-site communication, sampling efforts can be synchronized across multiple monitoring sites.
[Mh] Termos MeSH primário: Monitoramento Ambiental/métodos
Fósforo/análise
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Drenagem Sanitária
Chuvas
Rios/química
Movimentos da Água
Qualidade da Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Water Pollutants, Chemical); 27YLU75U4W (Phosphorus)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:171020
[Lr] Data última revisão:
171020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170525
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-5974-7


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[PMID]:28531557
[Au] Autor:Abusallout I; Hua G
[Ad] Endereço:Department of Civil and Environmental Engineering, South Dakota State University, Brookings, SD, 57007, USA.
[Ti] Título:Characterization of dissolved organic carbon leached from a woodchip bioreactor.
[So] Source:Chemosphere;183:36-43, 2017 Sep.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Woodchip bioreactors are increasingly being applied to remove nitrate from agricultural subsurface drainage. However, dissolved organic carbon (DOC) released from woodchips may negatively affect the aquatic ecosystems and drinking water supplies. The objective of this study was to evaluate the leaching characteristics, disinfection byproduct (DBP) formation potentials, and treatability of DOC derived from a laboratory woodchip bioreactor. Initial flush of woodchips resulted in the release of high organic content from woodchips. The DOC concentration in the bioreactor effluent decreased rapidly from 71.8 to 20.7 mg/L during the first week of operation, and then gradually decreased to 3.0 mg/L after 240 days of operation under a hydraulic retention time of 24 h. A recycled steel chip filter removed an average of 44.2% of the DOC in the bioreactor effluent. Hydrophobic carbons and organic compounds with molecular weight of 10-100 KDa were the most abundant organic fractions in the DOC released from woodchips. These two DOC fractions were also the most important precursors to the formation of total organic halogen (TOX) during chlorination and chloramination. The TOX yields of woodchip DOC were similar to those of Suwannee River Fulvic Acid, suggesting that organic compounds released from woodchips have great potentials for DBP formation. Alum and polyaluminium chloride were more effective at removing woodchip DOC than ferric chloride during coagulation. Drinking water treatment plants may need to adjust coagulant types and doses in order to remove woodchip DOC in the source water to reduce the DBP formation potential.
[Mh] Termos MeSH primário: Reatores Biológicos
Drenagem Sanitária/métodos
Hidrocarbonetos/análise
Poluentes Químicos da Água/análise
Purificação da Água/métodos
Madeira/química
[Mh] Termos MeSH secundário: Compostos de Alúmen/química
Desinfecção
Ecossistema
Filtração
Floculação
Halogenação
Hidrocarbonetos/química
Aço/química
Poluentes Químicos da Água/química
Abastecimento de Água/normas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Alum Compounds); 0 (Hydrocarbons); 0 (Water Pollutants, Chemical); 12597-69-2 (Steel); 34S289N54E (aluminum sulfate)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170927
[Lr] Data última revisão:
170927
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170523
[St] Status:MEDLINE


  10 / 553 MEDLINE  
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[PMID]:28498133
[Au] Autor:Lopes P; Carvalho RF; Leandro J
[Ad] Endereço:MARE - Marine and Environmental Sciences Centre, Faculty of Sciences and Technology, University of Coimbra, Coimbra 3004-517, Portugal and Department of Civil Engineering, Faculty of Sciences and Technology, University of Coimbra, Rua Luís Reis Santos, Coimbra 3030-788, Portugal E-mail: pmlopes@student.dec.uc.pt.
[Ti] Título:Numerical and experimental study of the fundamental flow characteristics of a 3D gully box under drainage.
[So] Source:Water Sci Technol;75(9-10):2204-2215, 2017 May.
[Is] ISSN:0273-1223
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Numerical studies regarding the influence of entrapped air on the hydraulic performance of gullies are nonexistent. This is due to the lack of a model that simulates the air-entrainment phenomena and consequently the entrapped air. In this work, we used experimental data to validate an air-entrainment model that uses a Volume-of-Fluid based method to detect the interface and the Shear-stress transport k-ω turbulence model. The air is detected in a sub-grid scale, generated by a source term and transported using a slip velocity formulation. Results are shown in terms of free-surface elevation, velocity profiles, turbulent kinetic energy and discharge coefficients. The air-entrainment model allied to the turbulence model showed a good accuracy in the prediction of the zones of the gully where the air is more concentrated.
[Mh] Termos MeSH primário: Simulação por Computador
Drenagem Sanitária
Modelos Teóricos
Movimentos da Água
[Mh] Termos MeSH secundário: Estresse Mecânico
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170914
[Lr] Data última revisão:
170914
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170513
[St] Status:MEDLINE
[do] DOI:10.2166/wst.2017.071



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