Browsing Biological & Environmental Sciences by Title
Now showing items 56-75 of 856
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Anti-microbial Activity Of Graphene Oxide Against Bacteria And Fungi
( Hamad bin Khalifa University Press (HBKU Press) , 2014 , Conference Paper)Graphene Oxide (GO) is a promising material for various applications. The team prepared GO from graphite and studied the interaction with different microorganisms. Anti-microbial properties were detected for the prepared ... -
Anti-proliferative and Anti-metastatic Effect of Aqueous Extract of Origanum Syriacum on Aggressive Human Breast Cancer Cells
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Around the world as well as in Qatar, breast cancer is characterized among the highest rates of mortalities that are cancer related. Alarmingly, statistics have shown that the incidence of breast cancer is slightly higher ... -
Anti-sporulation effectiveness of leaf extracts of three Prosopis species on spoiling fungi collected from fresh produce in the Qatari market
( John Wiley and Sons Inc , 2023 , Article)Fruit and vegetable post-harvest infections are mainly caused by mycotoxin producing fungi. Post-harvest diseases are causing food losses that lead to global economical problems. In this study, fresh samples of fruits and ... -
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 ... -
Antibody-dependent enhancement (ADE) of SARS-CoV-2 in patients exposed to MERS-CoV and SARS-CoV-2 antigens
( Wiley , 2024 , Article)This study evaluated the potential for antibody-dependent enhancement (ADE) in serum samples from patients exposed to Middle East respiratory syndrome coronavirus (MERS-CoV). Furthermore, we evaluated the effect of severe ... -
Antifungal activities of an endophytic Pseudomonas fluorescens strain Pf1TZ harbouring genes from pyoluteorin and phenazine clusters
( Springer Netherlands , 2010 , Article)Pseudomonas fluorescens Pf1TZ was inhibitory in vitro to a number of phytopathogenic fungi and could protect vine plantlets against Botrytis cinerea. Total protection was reached after 3 weeks of bacterial inoculation. The ... -
Antimicrobial activity of amphiphilic nanomicelles loaded with curcumin against Pseudomonas aeruginosa alone and activated by blue laser light
( wiley , 2021 , Article)The aim of this work was to assess the antimicrobial efficacy on Pseudomonas aeruginosa of nanomicelles loaded with curcumin (CUR) alone and activated by blue laser light in an antimicrobial photodynamic therapy (APDT) ... -
Antimicrobial and Cytotoxic Activity of Streptomyces sp. Isolated from Desert Soils, Qatar
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Streptomyces are Gram positive aerobic bacteria from the phylum Actinobacteria with close to 570 known species. They are popular for providing a variety of compounds having medicinal properties including - antibiotics, ... -
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 Balanced Acceptance Sampling to an Intertidal Survey
( De Gruyter Open Ltd , 2017 , Article)In ecological studies, the population of interest is often spread over a large area. In these studies, obtaining a sample with good spatial coverage is an important feature in the design of a survey. In most cases adjacent, ... -
Application of eggshell wastes for boron remediation from water
( Elsevier B.V. , 2018 , Article)Boron in high concentration levels leads to harmful effects on the environment and human health. Hence, it needs to be eliminated from desalinated water in order to improve water quality. As a result, the removal of boron ... -
Application of geopolymers synthesized from incinerated municipal solid waste ashes for the removal of cationic dye from water
( Public Library of Science , 2020 , Article)In this study, municipal solid waste bottom ash (MSW-BA) and fly ash (MSW-FA) were used as a source of aluminosilicate to prepare geopolymer (GEO) adsorbents (GEO-MSWBA and GEO-MSWFA) for the removal of methylene blue (MB) ... -
Application of low-fermenting yeast Lachancea thermotolerans for the control of toxigenic fungi Aspergillus parasiticus, Penicillium verrucosum and Fusarium graminearum and their mycotoxins
( MDPI , 2018 , Article)© 2018 by the authors. Licensee MDPI, Basel, Switzerland. Mycotoxins are important contaminants of food and feed. In this study, low fermenting yeast (Lachancea thermotolerans) and its derivatives were applied against ... -
Application of MALDI Biotyper System for Rapid Identification of Bacteria Isolated from a Fresh Produce Market
( Springer New York LLC , 2019 , Article)MALDI-TOF MS has revolutionized the identification of microorganisms and has become an indispensable part of routine diagnostics in the clinical microbiological laboratory. However, application of this technique in microbial ... -
Application of MALDI-TOF MS for identification of environmental bacteria: A review
( Academic Press , 2022 , Article)Bacteria play a variety of roles in the environment. They maintain the balance in the ecosystem and provide different ecosystem services such as in biogeochemical cycling of nutrients, biodegradation of toxic pollutants, ... -
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 ... -
Application of statistical experimental design for optimisation of bioinsecticides production by sporeless Bacillus thuringiensis strain on cheap medium
( Sociedade Brasileira de Microbiologia - SBM , 2014 , Article)In order to overproduce bioinsecticides production by a sporeless Bacillus thuringiensis strain, an optimal composition of a cheap medium was defined using a response surface methodology. In a first step, a Plackett-Burman ... -
Application of statistical experimental design for optimisation of bioinsecticides production by sporeless Bacillus thuringiensis strain on cheap medium
(2013 , Article)In order to overproduce bioinsecticides production by a sporeless Bacillus thuringiensis strain, an optimal composition of a cheap medium was defined using a response surface methodology. In a first step, a Plackett-Burman ... -
Application of yeasts and yeast derivatives for the biological control of toxigenic fungi and their toxic metabolites
( Elsevier , 2021 , Article)Mycotoxins, the metabolites of toxigenic fungi are important contaminants of food and agriculture industry throughout the world. Among the different strategies to minimize the mycotoxins synthesis and decontamination of ...