Results 31 to 40 of about 2,466,520 (306)

Urban Evolution: The Role of Water [PDF]

open access: yes, 2015
The structure, function, and services of urban ecosystems evolve over time scales from seconds to centuries as Earth’s population grows, infrastructure ages, and sociopolitical values alter them.
Belt, Kenneth T.   +6 more
core   +3 more sources

Hydraulic characteristics of the airlift pump [PDF]

open access: yesActa Scientiarum Polonorum. Formatio Circumiectus, 2018
Airlift pumps are the simplest devices used for lifting and transporting of liquid in water and wastewater systems. They constitute the subject of interest in numerous studies, focusing on their two-phase flow.
Sebastian Kujawiak   +2 more
doaj   +1 more source

Characteristics and Impact of VOCs on Ozone Formation Potential in a Petrochemical Industrial Area, Thailand

open access: yesAtmosphere, 2022
In this study, the ambient concentrations of volatile organic compounds (VOCs) were intensively measured from January 2012 to December 2016 using an evacuated canister and were analyzed using a gas chromatography/mass spectrophotometer (GC/MS) based on ...
Nattaporn Pinthong   +3 more
doaj   +1 more source

Fecal contamination of drinking-water in low- and middle-income countries: a systematic review and meta-analysis [PDF]

open access: yes, 2014
Background: access to safe drinking-water is a fundamental requirement for good health and is also a human right. Global access to safe drinking-water is monitored by WHO and UNICEF using as an indicator “use of an improved source,” which does not ...
Bain, R.   +5 more
core   +4 more sources

Adsorption of Phenol onto Aluminum Oxide Nanoparticles: Performance Evaluation, Mechanism Exploration, and Principal Component Analysis (PCA) of Thermodynamics

open access: yesAdsorption Science & Technology, 2022
The removal of phenolic compounds from aqueous solutions using novel adsorption techniques becomes a key research item. Of those, nanoparticles in particular, the low-cost and the high-strength aluminum oxide nanoparticles showed promising results in ...
Safwat M. Safwat   +3 more
doaj   +1 more source

Water infrastructure and social housing in Bogotá: an intersection between modern water management and social housing production [PDF]

open access: yes, 2016
En la actualidad Bogotá afronta la presión de construir viviendas sociales en ecosistemas frágiles, áreas rurales o zonas propensas a las inundaciones, y al mismo tiempo proteger estas áreas para asegurar la capacidad de resiliencia del medio ambiente.
Rojas Bernal, Claudia Lucia
core   +1 more source

Recovery of Ammonium Sulfate Solution by Regeneration of Loaded Clinoptilolite

open access: yesNanomaterials, 2022
The zeolite clinoptilolite (CLI) is known to be a very good ion exchanger, as it consists of a three-dimensional structure formed of AlO4− and SiO4 tetrahedral, which are connected by a common oxygen atom.
Stephan Wasielewski   +3 more
doaj   +1 more source

Forecasting wind speed data by using a combination of ARIMA model with single exponential smoothing [PDF]

open access: yes, 2021
Wind serves as natural resources as the solution to minimize global warming and has been commonly used to produce electricity. Because of their uncontrollable wind characteristics, wind speed forecasting is considered one of the best challenges in ...
A. Rahman, Nur H.   +5 more
core   +1 more source

Community-driven sanitation improvement in deprived urban neighbourhoods: meeting the challenges of local collective action, co-production, affordability and a trans-sectoral approach. [PDF]

open access: yes, 2013
There is an international consensus that urban sanitary conditions are in great need of improvement, but sharp disagreement over how this improvement should be pursued.
McGranahan, Gordon, SHARE
core   +1 more source

The effects of modification for contact stabilization activated sludge on EBPR

open access: yesHBRC Journal, 2015
Excessive phosphorus can cause eutrophication in water bodies and needs to be reduced in most wastewaters before being discharged into receiving waters.
Hamdy I. Ali   +4 more
doaj   +1 more source

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