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السجلات المعروضة 1 -- 20 من 56
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A better understanding of seawater reverse osmosis brine: Characterizations, uses, and energy requirements
( Elsevier Ltd , 2021 , Article)Before investing in any optimizing technology for the recovery and reuse of brine resources, it is of importance to study the full physicochemical characteristics of the brine. In the current study, the physicochemical ... -
A novel method for metals extraction from municipal solid waste using a microwave-assisted acid extraction
( Elsevier Ltd , 2021 , Article)This paper investigated the development and evaluation of an extraction process for copper, chromium, cobalt, iron, manganese, zinc, lead, cadmium, barium, magnesium, and vanadium from municipal solid waste incineration ... -
Algal toxins and producers in the marine waters of Qatar, Arabian Gulf
( Elsevier Ltd , 2016 , Article)Harmful Algal Bloom species are ubiquitous and their blooms occur in the Arabian Gulf. In this study, two cruises were performed in 2012 and 2013 to collect phytoplankton samples from 4 sites in the Arabian Gulf. Toxin ... -
An integrated approach for produced water treatment using microemulsions modified activated carbon
( Elsevier Ltd , 2019 , Article)In this study, the physical and chemical characterization of produced water was done followed by treatment through sand filtration coupled with activated carbon microemulsion modified activated carbon techniques. The results ... -
Antibiotics in hospital effluent and domestic wastewater treatment plants in Doha, Qatar
( Elsevier Ltd , 2019 , Article)Wastewater samples were collected from the main hospital’s effluent (HWW), influents and effluents of the old wastewater treatment plant (OWWTP) built in 1990 and the new one (NWWTP) built in 2010 located in Doha, Qatar. ... -
Antibody-Dependent Enhancement (ADE) and the role of complement system in disease pathogenesis
( Elsevier Ltd , 2022 , Article Review)Antibody-dependent enhancement (ADE) has been associated with severe disease outcomes in several viral infections, including respiratory infections. In vitro and in vivo studies showed that antibody-response to SARS-CoV ... -
Antioxidant constituents from Lawsonia inermis leaves: Isolation, structure elucidation and antioxidative capacity
( Elsevier Ltd , 2011 , Article)The antioxidant potential of different fractions of Lawsonia inermis (Lythraceae) was investigated. The n-butanolic fraction showed the highest yield of extraction; it also exhibited a strong antioxidant activity in the ... -
Application of scanning electron microscopy and MALDI-TOF MS in the exploration of the parasporal insecticidal crystals of Bacillus thuringiensis strains isolated from Qatar soil
( Elsevier Ltd , 2022 , Article)Bacillus thuringiensis (Bt) plays an important role in health and agriculture due to its insecticidal activities. In this study, six Bt strains isolated from Qatar soil were used to explore their crystals morphologies and ... -
Applying the ecosystem services - EBM framework to sustainably manage Qatar's coral reefs and seagrass beds
( Elsevier Ltd , 2021 , Article)Given the current natural and anthropogenic threats facing Qatar's marine environment and the consequential expected decline in ecosystem services, this paper examines the potential application of the Ecosystem Services-EBM ... -
Are submarine groundwater discharges affecting the structure and physiological status of rocky intertidal communities?
( Elsevier Ltd , 2018 , Article)This study evaluated the impacts of submarine groundwater discharges (SGD) on a rocky intertidal community of South Portugal, during April–November 2011. Chlorophyll-a concentration was higher at the SGD site in respect ... -
Characterization of bioactive compounds and ameliorative effects of Ceratonia siliqua leaf extract against CCl4 induced hepatic oxidative damage and renal failure in rats
( Elsevier Ltd , 2011 , Article)Ceratonia siliqua is a typical Mediterranean plant, mainly used in food and Tunisian traditional folk medicine. Among the tested extracts, the ethyl acetate fraction (EACs) exhibited the highest total phenolic and flavonoids ... -
China's ecological civilization program-Implementing ecological redline policy
( Elsevier Ltd , 2019 , Article)China is one of the first countries to explicitly attempt to institute coordinated, ecosystem-based management across local, regional, and national scales. Chinese scientists have been urging policymakers to manage landscapes ... -
Concentration, composition and sources of PAHs in the coastal sediments of the exclusive economic zone (EEZ) of Qatar, Arabian Gulf
( Elsevier Ltd , 2014 , Article)Surface sediments were collected from sixteen locations in order to assess levels and sources of polycyclic aromatic hydrocarbons (PAHs) in sediments of Qatar exclusive economic zone (EEZ). Samples were analyzed for 16 ... -
Cry4Ba and Cyt1Aa proteins from Bacillus thuringiensis israelensis: Interactions and Toxicity mechanism against Aedes aegypti
( Elsevier Ltd , 2015 , Article)Individual crystal proteins from Bacillus thuringiensis israelensis exhibit variable levels of insecticidal activities against mosquito larvae. In all cases, they are much less active compared to the whole crystal proteins ... -
Detection of toxigenic mycobiota and mycotoxins in cereal feed market
( Elsevier Ltd , 2018 , Article)The present study was designed to investigate the occurrence of mycotoxins and toxigenic mycobiota in cereals used as animal feed in a Qatari market. Aflatoxins (AFs) and ochratoxin A (OTA) were detected in 94 and 44% of ... -
Detoxification of mercury pollutant leached from spent fluorescent lamps using bacterial strains
( Elsevier Ltd , 2016 , Article)The spent fluorescent lamps (SFLs) are being classified as a hazardous waste due to having mercury as one of its main components. Mercury is considered the second most toxic heavy metal (arsenic is the first) with harmful ... -
Dietary L-carnitine and vitamin-E; a strategy to combat ochratoxin-A induced immunosuppression
( Elsevier Ltd , 2018 , Article)This study aimed to evaluate the effect of dietary ochratoxin A (OA), in the presence and absence of L-carnitine (LC) and vitamin E (VE), on the humoral immune responses of White Leghorn cockerels (WLC). One-day old white ... -
Effects of soaking, acidity and temperature on cadmium and lead removal from rice
( Elsevier Ltd , 2020 , Article)In this research, effect of soaking time, acidity and temperature on the removal of lead and cadmium from rice was investigated. Different rice treatments were involved i.e. three soaking times (0, 15, and 30 min), three ... -
Epibenthic communities from offshore platforms in the Arabian Gulf are structured by platform age and depth
( Elsevier Ltd , 2021 , Article)Oil and gas platforms act as artificial habitats for a myriad of marine organisms. In this study, we used opportunistic remotely operated vehicle (ROV) data to describe fouling assemblages through the characterization of ... -
Evidence of low levels of aflatoxin M1 in milk and dairy products marketed in Qatar
( Elsevier Ltd , 2018 , Article)This study was designed to explore the incidence of aflatoxin M1 (AFM1) in milk and dairy products marketed in Qatar. Milk (n = 72), yogurt (n = 21), cheese (n = 46), butter (n = 18) and laban (n = 25) samples were initially ...