Results 51 to 60 of about 2,305,488 (280)
Alexandria Engineering Journal, 2022 This study was conducted to assess trihalomethane levels in Aseer region's main chlorinated treated drinking water sources over four consecutive seasons (Summer, Autumn, Winter, and Spring) and to gain a better understanding of trihalomethane occurrence,
Ahmed M. Mujathel +3 more
doaj
Evaluation of water consumption in rapid sand filters backwashed under varied physical conditions
Alexandria Engineering Journal, 2023 Egypt suffers from water scarcity. In water treatment plants using sand filters, a significant amount of treated water is consumed, estimated at 10%–15% of the filtered water during backwashing.
Sara Beshr +3 more
doaj
The role of mobility and sanitary measures on Covid-19 in Costa Rica, March through July 2020 [PDF]
arXiv, 2021 The aim of this paper is to infer the effects that changes on human mobility had on the transmission dynamics during the first four months of the SARS-CoV-2 outbreak in Costa Rica, before community transmission was established in the country. By using parametric and non parametric detection change-point techniques we were able to identify two different
arxiv
Zooplankton act as cruise ships promoting the survival and pathogenicity of pathogenic bacteria
Microbiology and Immunology, Volume 66, Issue 12, Page 564-578, December 2022., 2022 Abstract Bacteria in general interact with zooplankton in aquatic ecosystems. These zooplankton–bacterial interactions help to shape the bacterial community by regulating bacterial abundances. Such interactions are even more significant and crucially in need of investigation in the case of pathogenic bacteria, which cause severe diseases in humans and ...
Ishara U. Perera +4 more
wiley +1 more source
Sociology of Health &Illness, Volume 45, Issue 1, Page 128-144, January 2023., 2023 Abstract Eugenic ideas in Mexico were popularised after the Mexican Revolution (1910–1920) as a way of ‘modernising’ and ‘civilising’ the nation. As a result, eugenic ideas were able to linger and be maintained through different departments, institutions, and individuals from all disciplines. After eugenics was considered a pseudoscience, its practices
R. Sanchez‐Rivera
wiley +1 more source
The effects of modification for contact stabilization activated sludge on EBPR
HBRC 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
Adsorption 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
Optimization of Dengue Epidemics: a test case with different discretization schemes [PDF]
American Institute of Physics Conf. Proc. 1168 (2009), no.1,
1385-1388, 2010 The incidence of Dengue epidemiologic disease has grown in recent decades. In this paper an application of optimal control in Dengue epidemics is presented. The mathematical model includes the dynamic of Dengue mosquito, the affected persons, the people's motivation to combat the mosquito and the inherent social cost of the disease, such as cost with ...
arxiv +1 more source
Impact of COVID‐19 inequalities on children: An intersectional analysis
Sociology of Health &Illness, Volume 45, Issue 1, Page 145-162, January 2023., 2023 Abstract Societal concerns about the effects of the COVID‐19 pandemic have largely focussed on the social groups most directly affected, such as the elderly and health workers. However, less focus has been placed on understanding the effects on other collectives, such as children.
Gabriel Lemkow–Tovías +4 more
wiley +1 more source
Recovery of Ammonium Sulfate Solution by Regeneration of Loaded Clinoptilolite
Nanomaterials, 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