Browsing Biological & Environmental Sciences by Title
Now showing items 723-742 of 809
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Synergism between nigella sativa seeds extract and synthetic antibiotics against Mec A gene positive human strains of staphylococcus aureus
( Asian Network for Scientific Information , 2017 , Article)Background and Objective: Synergistic combinations of various antimicrobial agents have been introduced as extra successful strategies to combat multidrug resistant (MDR) infections. This study was undertaken to evaluate ... -
Synthesis of nanostructured novel ion-imprinted polymer for selective removal of Cu2+ and Sr2+ ions from reverse osmosis concentrated brine
( Elsevier , 2023 , Article)This study aims to prepare an ion-imprinted polymer (IIP) using copper sulfate as a template and potassium persulfate as an initiator to selectively adsorb copper ions (Cu2+) from aqueous solutions and in an attempt to ... -
Synthesis of silver nanoparticles using Bacillus velezensis M3-7 lipopeptides: Enhanced antifungal activity and potential use as a biocontrol agent against Fusarium crown rot disease of wheat seedlings
( Elsevier , 2023 , Article)Bacillus velezensis M3-7 is a hyperactive mutant, 12-fold improved in its antifungal activity, obtained during a previous study from the wild strain BLB371 after a combination of random mutagenesis and medium component ... -
Systematic laboratory approach to produce Mg-rich carbonates at low temperature
( Royal Society of Chemistry , 2021 , Article)Dolomite is a common Mg-rich carbonate in the geological record, but the mechanism of its formation remains unclear. At low temperature, the incorporation of magnesium ions into the carbonate minerals necessary to form ... -
The assessment of cadmium, chromium, copper, and nickel tolerance and bioaccumulation by shrub plant Tetraena qataranse
( Nature Publishing Group , 2019 , Article)Heavy metals constitute some of the most significant environmental contaminants today. The abundance of naturally growing Tetraena qataranse around Ras Laffan oil and gas facilities in the state of Qatar reflects its ... -
The biogeochemical iron cycle and astrobiology
( Springer International Publishing , 2016 , Article)Biogeochemistry investigates chemical cycles which influence or are influenced by biological activity. Astrobiology studies the origin, evolution and distribution of life in the universe. The biogeochemical Fe cycle has ... -
The Causes and Effects of Mercury and Methylmercury Contamination in the Marine Environment: A Review
( Springer Science and Business Media Deutschland GmbH , 2022 , Article Review)Purpose of Review: The concern of mercury pollution and the impact that it poses on the marine environment were studied heavily since the case of the poison from Minamata bay in the 1960s. The present study provides an ... -
The characteristics, occurrence, and toxicological effects of patulin
( Elsevier Ltd , 2019 , Article Review)Mycotoxins are the secondary metabolites secreted by different types of fungi to which humans can get exposed mainly via ingestion. Patulin (C7H6O4)is a polyketide lactone produced by various fungal specifies, including ... -
The combinatory effect of Cyt1Aa flexibility and specificity against dipteran larvae improves the toxicity of Bacillus thuringensis kurstaki toxins
( Elsevier B.V. , 2019 , Article)Cyt1A98 is a novel cytolytic protein, from BUPM98 Bacillus thuringiensis strain, characterized by its synergistic activity with B. thuringiensis kurstaki toxins against lepidopteran larvae. In this study, we evidenced that ... -
The impact of total quality management and entrepreneurial orientation on organizational performance
( Emerald Group Publishing Ltd. , 2016 , Article)Purpose One of the primary goals of this study was to examine the joint effect of entrepreneurial orientation and Total Quality Management on the organizational performance. Design/methodology/approach To examine the ... -
The Influences of Produced Water Irrigation on Soil microbial succession and Turfgrass Grass Establishment in Qatar
( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)The Influences of Produced Water Irrigation on Soil microbial succession and Turfgrass Grass Establishment in Qatar Sameera S. Shaikh, Mohammed H. Abu-Dieyeh*, Fatima A. Al Naemi, Talaat Ahmed, and Mohammad A. Alghouti ... -
The integrated/hybrid membrane systems for membrane desalination
( Elsevier , 2021 , Book chapter)Freshwater scarcity is a global issue that is further exacerbated by both economic and population growth. Membrane desalination possesses the potential to address water stress issues, but membrane fouling has affected its ... -
The potential impact of climate change on linkages between above and below ground communities in low diversity ecosystems in extreme environments
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)There is growing evidence that ecosystem function depend on biodiversity. For example, experimental studies with different number of plant species show that microbial biomass, fungal abundance and N mineralisation rates ... -
The power of phytochemicals combination in cancer chemoprevention
( Ivyspring International Publisher , 2020 , Article Review)Conventional therapies for cancer treatment have posed many challenges, including toxicity, multidrug resistance and economic expenses. In contrast, complementary alternative medicine (CAM), employing phytochemicals have ... -
The recovery of strontium ions from seawater reverse osmosis brine using novel composite materials of ferrocyanides modified roasted date pits
( Elsevier , 2023 , Article)In this study, three types of adsorbents were used to remove and recover strontium ions (Sr2+) from aqueous and brine solution of seawater reverse osmosis (SWRO), namely roasted date pits (RDP) and RDP modified using copper ... -
The replacement of five consecutive amino acids in the cyt1a protein of bacillus thuringiensis enhances its cytotoxic activity against lung epithelial cancer cells
( MDPI AG , 2018 , Article)Cyt1A protein is a cytolytic protein encoded by the cyt gene of Bacillus thuringiensis subsp. israelensis (Bti) as part of the parasporal crystal proteins produced during the sporulation. Cyt1A protein is unique compared ... -
The role of gene gjb2 and connexin 26 in hearing impairment
( Palladin Institute of Biochemistry of the NASU , 2018 , Article Review)Gap Junction Beta 2 (GJB2) gene mutations are the leading causes of hereditary hearing impairment. This gene encodes various gap junction proteins such as connexin 26 (Cx26), which facilitate K+ homeostasis inside the ... -
The role of α2-adrenergic receptors in hypertensive preeclampsia: A hypothesis
( Wiley Blackwell , 2019 , Article Review)Preeclampsia, a major disorder of human pregnancy, manifests as persistent hypertension and proteinuria presenting after 20 weeks of pregnancy. Multiple systemic symptoms might be associated with preeclampsia including ... -
The status of harmful algae in the Arabian Gulf
( Hamad bin Khalifa University Press (HBKU Press) , 2015 , Conference Paper)In the ocean, microscopic plankton algae constitute a crucial food supply for filter- feeding bivalves, shellfish (oyster, mussels, scallop and clams), as well as larvae of commercially important crustaceans and finfish. ... -
The use of principle component analysis and MALDI-TOF MS for the differentiation of mineral forming: Virgibacillus and Bacillus species isolated from sabkhas
( Royal Society of Chemistry , 2020 , Article)Occurrence of mineral forming and other bacteria in mats is well demonstrated. However, their high diversity shown by ribotyping has not been explained, although it could explain the diversity of formed minerals. Common ...