Results 1 to 10 of about 1,179,119 (164)

Modeling and optimization of pressure and water age for evaluation of urban water distribution systems performance [PDF]

open access: yesHeliyon, 2022
Water loss has become increasingly critical as the severity of the water shortage situation has grown in recent decades. One of the options for reducing water loss in urban water distribution networks is pressure management.
Wendesen Mekonin Desta   +2 more
doaj   +4 more sources

Water Age Effects on the Occurrence and Concentration of Legionella Species in the Distribution System, Premise Plumbing, and the Cooling Towers [PDF]

open access: yesMicroorganisms, 2021
In this study, droplet digital PCRTM (ddPCRTM) was used to characterize total Legionella spp. and five specific Legionella species from source (groundwater) to exposure sites (taps and cooling towers).
Alshae R. Logan-Jackson, Joan B. Rose
doaj   +2 more sources

Water age in drinking water distribution systems: A case study comparing tracers and EPANET

open access: yesCase Studies in Chemical and Environmental Engineering
This study aimed to compare the water age in a drinking water distribution network (DWDN) using tracers and EPANET. The results indicate that all DWDN have residence times within the “short” time.
Fernando García-Avila   +6 more
doaj   +3 more sources

Modelling of the circulation, water exchange and water age

open access: yesOceanologia, 2006
To estimate the mean circulation, water exchange and water agein the Gulf of Bothnia a ten-year simulation using a three-dimensionalnumerical model was carried out. The results confirmed the earlyfindings by Witting (1912) and Palmén (1930) that a
Kai Myrberg, Oleg Andrejev
doaj   +1 more source

Variable Legionella Response to Building Occupancy Patterns and Precautionary Flushing

open access: yesMicroorganisms, 2022
When stay-at-home orders were issued to slow the spread of COVID-19, building occupancy (and water demand) was drastically decreased in many buildings. There was concern that widespread low water demand may cause unprecedented Legionella occurrence and ...
William J. Rhoads   +4 more
doaj   +1 more source

Tracing the depth-dependent changes in organic carbon and nutrient fluxes using high-resolution 228Ra profiles in the upper East Sea (Japan Sea)

open access: yesFrontiers in Marine Science, 2022
Vertical profiles of 228Ra (half-life: 5.75 years) in the ocean provide valuable information on water mixing and ages of the upper ocean. However, its application is hampered by extremely low levels of 228Ra in the deep ocean.
Hyung-Mi Cho   +5 more
doaj   +1 more source

Causes, Factors, and Control Measures of Opportunistic Premise Plumbing Pathogens—A Critical Review

open access: yesApplied Sciences, 2021
This review critically analyses the chemical and physical parameters that influence the occurrence of opportunistic pathogens in the drinking water distribution system, specifically in premise plumbing.
Erin Leslie, Jason Hinds, Faisal I. Hai
doaj   +1 more source

Water age modeling as a tool to improve the quality and reduce the costs of water treatment in Polanica-Zdrój

open access: yesEconomics and Environment, 2023
The article contains part of the results of the project Protection of Natural Water Resources in Polanica-Zdrój through Intelligent Water and sewage management. The article presents the research results into the water supply network (WDN).
Wojciech Kruszynski   +4 more
doaj   +1 more source

Fertile Waters for Aging Research [PDF]

open access: yesCell, 2015
The quest to slow aging has come far, and what used to be the domain of science fiction writers and snake oil salesmen may soon become science fact. Innovative new approaches, such as the use of the very short-lived African killifish (Harel et al.), are bridging the translational gap and bring the promise of healthy longevity to fruition.
Wang, Adrienne M.   +2 more
openaire   +2 more sources

The age and sources of stream water in a boreal forest watershed in the permafrost region: a case study of a watershed in northeast China

open access: yesFrontiers in Earth Science, 2023
Determining the age and sources of stream water is critical for understanding the watershed hydrological processes and biogeochemical cycle. In this study, daily isotope data of rainfall and runoff, as well as continuously monitored conductivity data ...
Xiang Xiao   +6 more
doaj   +1 more source

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