Browsing Biological & Environmental Sciences by Title
Now showing items 767-786 of 915
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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 ... -
Sestrin2 as a Novel Biomarker and Therapeutic Target for Various Diseases
( Hindawi , 2017 , Article)Sestrin2 (SESN2), a highly conserved stress-inducible metabolic protein, is known to repress reactive oxygen species (ROS) and provide cytoprotection against various noxious stimuli including genotoxic and oxidative stress, ... -
Sex ratio, gonad development and fecundity of Miyakella nepa (Crustacea, Stomatopoda) of Pantai Remis coastal waters of Malaysia
( Triveni Enterprises , 2016 , Article)The sex ratio, gonad development and fecundity of Miyakella nepa (Latreille, 1828), in the coastal waters of Pantai Remis, Perak, were investigated from February 2012 to January 2013. Sex identification was done by identifying ... -
Shear and Tensile Strength Measurements of CaCO 3 Cemented Bonds between Glass Beads Treated by Microbially Induced Carbonate Precipitation
( American Society of Civil Engineers (ASCE) , 2023 , Article)The particle-scale shear and tensile strength measurements of microbial-induced calcite precipitation (MICP) treatment have been investigated in this paper. Glass beads were used to represent sand particles. Three ... -
Short-Term Effects of Experimental Warming and Precipitation Manipulation on Soil Microbial Biomass C and N, Community Substrate Utilization Patterns and Community Composition
( Soil Science Society of China , 2017 , Article)Soil microorganisms are major drivers of soil carbon (C) cycling; however, the response of these microorganisms to climate change remains unclear. In the present study, we investigated how 18 months of multifactor climate ... -
Short-term effects of warming treatment and precipitation manipulation on the ecophysiological responses of pinus densiflora seedlings
( Turkiye Klinikleri Journal of Medical Sciences , 2016 , Article)The aim of this study was to investigate the short-term effects of warming treatment and precipitation manipulation on the growth, photosynthetic rate, and chlorophyll content of Pinus densiflora seedlings based on a climate ... -
Short-term herbivory has long-term consequences in warmed and ambient high Arctic tundra
( Institute of Physics Publishing , 2017 , Article)Climate change is occurring across the world, with effects varying by ecosystem and region but already occurring quickly in high-latitude and high-altitude regions. Biotic interactions are important in determining ecosystem ...