Browsing Biological & Environmental Sciences by Title
Now showing items 731-750 of 881
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Rhus coriaria suppresses angiogenesis, metastasis and tumor growth of breast cancer through inhibition of STAT3, NFκB and nitric oxide pathways
( Nature Publishing Group , 2016 , Article)Recently, we reported that Rhus coriaria exhibits anticancer activities by promoting cell cycle arrest and autophagic cell death of the metastatic triple negative MDA-MB-231 breast cancer cells. Here, we investigated the ... -
RNA:DNA ratios as a proxy of egg production rates of Acartia
( Academic Press , 2017 , Article)Estimates of copepod secondary production are of great importance to infer the global organic matter fluxes in aquatic ecosystems and species-specific responses of zooplankton to hydrologic variability. However, there is ... -
Roasted-modified Date Pits In Remediation Of Bromide Ions From Desalinated Water: Kinetic Studies
( Hamad bin Khalifa University Press (HBKU Press) , 2014 , Conference Paper)Disinfection of drinking water is one of the extreme public health activities in Qatar. Chlorination, ozonation, ultra-violet, chloramination, and others are the most important treatment processes used and they can cause ... -
Rotavirus strain diversity in the Centre Coast of Tunisia from 2000 through 2003
( Oxford University Press , 2010 , Article)An epidemiological survey investigating rotavirus infection in children was undertaken in the coastal region of Tunisia from January 2000 through September 2003. A total of 309 fecal specimens were screened by enzyme-linked ... -
Rural development program in tribal region: A protocol for adaptation and addressing climate change vulnerability
( Elsevier Ltd , 2017 , Article)Tribal peoples globally are among the most vulnerable groups to climate change and variability. This is due to a combination of their relative poverty and their dependence on agriculture and natural support systems (NSS). ... -
Saffron: Perspectives and Sustainability for Active and Intelligent Food Packaging Applications
( Springer , 2023 , Other)Active and intelligent packaging can effectively improve the shelf life and monitor food quality in real-time packaged products without affecting nutritional value. With the growing interest in human health and well-being, ... -
Salinity Effects on Symbiodinium sp. growth rate in Controlled conditions and produced Biomass Biochemical Characterization
( Qatar University Press , 2021 , Poster)Salinity is an abiotic influencer to the growth and the efficiency of the algal Symbiodinium that coexists in symbiosis with corals. In light of the high salinity conditions that prevail in the Arabian Gulf including the ... -
Salinomycin induces apoptosis and senescence in breast cancer: Upregulation of p21, downregulation of survivin and histone H3 and H4 hyperacetylation
( Elsevier , 2013 , Article)Background In the present study, we investigated the effect of Salinomycin on the survival of three human breast cancer cell lines MCF-7, T47D and MDA-MB-231 grown in adherent culture conditions. Methods Cell viability ... -
Salvia fruticosa Induces Vasorelaxation in Rat Isolated Thoracic Aorta: Role of the PI3K/Akt/eNOS/NO/cGMP Signaling Pathway
( Nature Publishing Group , 2017 , Article)Salvia fruticosa (SF) Mill. is traditionally used for its antihypertensive actions. However, little is known about its pharmacologic and molecular mechanisms of action. Here we determined the effects of an ethanolic extract ... -
SARS-CoV-2 does not replicate in HaCaT spontaneously immortalized human keratinocytes: implications for the pathogenesis of COVID-19-associated skin manifestations
( John Libbey Eurotext , 2022 , Article)Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2)-related cutaneous manifestations have been reported [1], however, the direct or indirect role of SARS-CoV-2 infection in their pathophysiology is still debated ... -
SARS-CoV-2 modulates virus receptor expression in placenta and can induce trophoblast fusion, inflammation and endothelial permeability
( Frontiers Media , 2022 , Article)SARS-CoV-2 is a devastating virus that induces a range of immunopathological mechanisms including cytokine storm, apoptosis, inflammation and complement and coagulation pathway hyperactivation. However, how the infection ... -
SARS-CoV-2 RNA Recovery from Air Sampled on Quartz Fiber Filters: A Matter of Sample Preservation?
( MDPI , 2022 , Report)The airborne route of transmission of SARS-CoV-2 was confirmed by the World Health Organization in April 2021. There is an urge to establish standardized protocols for assessing the concentration of SARS-CoV-2 RNA in air ... -
SARS-CoV-2 Short-Time Infection Produces Relevant Cytopathic Effects in Vero E6 Cell Line.
( MDPI , 2021 , Article)Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) is mainly transmitted through respiratory droplets from positive subjects to susceptible hosts or by direct contact with an infected individual. Our study ... -
Screening and identification of a Bacillus thuringiensis strain S1/4 with large and efficient insecticidal activities.
( WILEY-VCH , 2013 , Article)The bacterium Bacillus thuringiensis was recognized for its entomopathogenic activities related to Cry and Cyt proteins forming the δ-endotoxins and some extracellular activities like the vegetative insecticidal proteins ... -
Seasonal and body size-dependent variability in the bioaccumulation of PAHs and their alkyl homologues in pearl oysters in the central Arabian Gulf
( Elsevier , 2022 , Article)Spatiotemporal concentration patterns for 19 parents and their alkyl homologues were measured in Pinctada radiata from 7 locations in the central Arabian Gulf around Qatar in the winter, spring and summer (2014–2015). The ... -
Seasonal variability of hydrography off the east coast of Qatar, central Arabian Gulf
( Springer Nature , 2022 , Article)Seasonal variability of hydrography along a nearshore-offshore transect in the eastern part of the EEZ of Qatar has been analyzed using in situ measurements carried out during 5 different months. The study reveals distinct ... -
Selection and characterisation of an HD1-like Bacillus thuringiensis isolate with a high insecticidal activity against Spodoptera littoralis (Lepidoptera: Noctuidae)
( John Wiley & Sons, Ltd , 2014 , Article)Spodoptera littoralis (Boisduval) larvae are known by their susceptibility to Bacillus thuringiensis subsp. aizawai strains. In order to prevent the appearance of B. thuringiensis (Bt) resistance and to develop economical ... -
Selective inhibition of protein arginine methyltransferase 5 blocks initiation and maintenance of B-cell transformation
( American Society of Hematology , 2015 , Article)Epigenetic events that are essential drivers of lymphocyte transformation remain incompletely characterized. We used models of Epstein-Barr virus (EBV)–induced B-cell transformation to document the relevance of protein ... -
Selective removal of dibenzothiophene from commercial diesel using manganese dioxide-modified activated carbon: A kinetic study
( Taylor and Francis Ltd. , 2015 , Article)With a total concentration of 7055 mgS/kgfuel, the content of organosulphur compounds (OSCs) in local diesel is 20 times higher than the regulated value. Analysis revealed that 30% of OSC is originated from dibenzothiophene ... -
Separation of water/oil emulsions by an electrospun copolyamide mat covered with a 2D Ti3C2Tx MXene
( MDPI AG , 2020 , Article)Purpose: Copolyamide 6,10 (coPA) electrospun mats were covered with multilayered (ML) and single-layered (SL) MXene (Ti3C2Tx) as a membrane for the separation of water/vegetable oil emulsions. Methods: Prepared membranes ...