Browsing Biological & Environmental Sciences by Title
Now showing items 152-171 of 915
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Characterization of tunisian Bacillus thuringiensis strains with abundance of kurstaki subspecies harbouring insecticidal activities against the lepidopteran insect ephestia kuehniella
( Springer US , 2010 , Article)The study of 257 crystal-producing Bacillus thuringiensis isolates from bioinsecticide free soil samples collected from different sites in Tunisia, was performed by PCR amplification, using six primer pairs specific for ... -
Chemical Characterization and Source Identification of Beached Oil from Two Areas Along the North-Western Coast of Qatar
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Over the years there have been several reports of oil spills affecting particularly the northern coast of Qatar. In most cases, the source of oil spills is not identified. The spilled oils are very resistant to degradation ... -
Chemical composition and evaluation of antioxidant and antimicrobial activities of Tunisian Thymelaea hirsuta with special reference to its mode of action
( Elsevier B.V. , 2013 , Article)In the present study, we evaluated in vitro antimicrobial and antioxidant properties of Thymelaea hirsuta extracts as well as its phytochemical composition. Total phenolic and flavonoid contents were highest in acetone and ... -
Chemical composition, cytotoxicity effect and antimicrobial activity of Ceratonia siliqua essential oil with preservative effects against Listeria inoculated in minced beef meat
( Elsevier B.V. , 2011 , Article)The present study describes the phytochemical profile and the protective effects of Ceratonia siliqua pods essential oil (CsEO), a food and medicinal plant widely distributed in Tunisia. Twenty five different components ... -
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 ... -
Chronic Cadmium Exposure Alters Cardiac Matrix Metalloproteinases in the Heart of Sprague-Dawley Rat
( Frontiers Media , 2021 , Article)The aim of this study was to evaluate the role of chronic cadmium exposure in modulating cardiac matrix metalloproteinases (MMPs) in the heart of rats. Adult male Sprague-Dawley rats were exposed to 15 ppm CdCl2 in drinking ... -
CIITA gene polymorphism (rs3087456) in systemic lupus erythematosus and rheumatoid arthritis: A population-based cohort study
( Wiley , 2021 , Other)Systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA) are influenced by genetic variants in immune system HLA genes. The Class II Major Histocompatibility Complex Transactivator (CIITA) is an important co-activator ... -
Climate change vulnerability in urban slum communities: Investigating household adaptation and decision-making capacity in the Indian Himalaya
( Elsevier B.V. , 2018 , Article)© 2018 Elsevier Ltd Climate change is predicted to have severe impacts on mountainous regions, including urban settlements, and livelihoods of the urban poor. Adaptive capacity for marginalized groups is largely determined ... -
Climate change will seriously impact bird species dwelling above the treeline: A prospective study for the Italian Alps
( Elsevier B.V. , 2017 , Article)High mountain systems are predicted to be especially vulnerable to the impact of climate change, with the climatically-constrained tree limit rapidly shifted upslope. In turn, the impact of upward treeline migration on ... -
Climate variability and its impact on the spatial distribution of mangroves in Qatar
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Mangroves are a unique vegetation community that can adapt to harsh climatic conditions, including in areas of high temperature and high salinity levels. It is an important coastal wetland community in many countries that ... -
Clinical–Epidemiological Characteristics and IFITM-3 (rs12252) Variant Involvement in HIV-1 Mother-to-Children Transmission Susceptibility in a Brazilian Population
( MDPI , 2023 , Article)Mother-to-children transmission (MTCT) is the main infection route for HIV-1 in children, and may occur during pregnancy, delivery, and/or postpartum. It is a multifactorial phenomenon, where genetic variants play an ... -
Closing a gap - First records of bryophytes from the Qatar Peninsula
( A.D.A.C. , 2018 , Article)The ephemeral or annual mosses Entosthodon fascicularis (Funariaceae), Microbryum starckeanum (Pottiaceae) and Pohlia melanodon (Mniaceae) were found in the understorey of natural Ziziphus nummularia shrubland in Qatar. ... -
Co-occurrence of mycotoxins in commercial formula milk and cereal-based baby food on the Qatar market
( Taylor and Francis Ltd. , 2018 , Article)The present study was conducted to explore the occurrence of mycotoxins in commercial baby foods in Doha-Qatar. LCMS/MS- and HPLC-based analysis of baby food (n?=?67) for 12 mycotoxins confirmed the presence of aflatoxin ... -
Coffee and its waste repel gravid Aedes albopictus females and inhibit the development of their embryos
( BioMed Central , 2015 , Article)Background Dengue is a prevalent arboviral disease and the development of insecticide resistance among its vectors impedes endeavors to control it. Coffee is drunk by millions of people daily worldwide, which is associated ... -
Collembola at three alpine subarctic sites resistant to twenty years of experimental warming
( Nature Publishing Group , 2015 , Article)This study examined the effects of micro-scale, site and 19 and 21 years of experimental warming on Collembola in three contrasting alpine subarctic plant communities (poor heath, rich meadow, wet meadow). Unexpectedly, ... -
Colorectal and Prostate Cancer Risk in Diabetes: Metformin, an Actor behind the Scene
( Ivyspring International Publisher , 2014 , Article)Both diabetes and cancer are prevalent diseases whose incidence rates are increasing worldwide, especially in countries that are undergoing rapid industrialization changes. Apparently, lifestyle risk factors including diet, ... -
Combating immunotoxicity of aflatoxin B1 by dietary carbon supplementation in broiler chickens
( Springer Science and Business Media Deutschland GmbH , 2021 , Article)Aflatoxin B1 (AFB1) is a secondary metabolite of some Aspergillus species that contaminate the agricultural commodities intended for animal and human consumption. The present in vivo study aimed to evaluate activated ... -
Combinatorial effect of Bacillus thuringiensis kurstaki and Photorhabdus luminescens against Spodoptera littoralis (Lepidoptera: Noctuidae).
( WILEY-VCH , 2014 , Article)Spodoptera littoralis, one of the major pests of many important crop plants, is more susceptible to Bacillus thuringiensis aizawai delta-endotoxins than to those of Bacillus thuringiensis kurstaki. Within the framework of ... -
Combinatorial effect of mutagenesis and medium component optimization on Bacillus amyloliquefaciens antifungal activity and efficacy in eradicating Botrytis cinerea
( Elsevier GmbH , 2017 , Article)This work is directed towards Bacillus amyloliquefaciens strain BLB371 metabolite production for biocontrol of fungal phytopathogens. In order to maximise antifungal metabolite production by this strain, two approaches ... -
Community and species-specific responses of plant traits to 23 years of experimental warming across subarctic tundra plant communities
( Nature Publishing Group , 2017 , Article)To improve understanding of how global warming may affect competitive interactions among plants, information on the responses of plant functional traits across species to long-term warming is needed. Here we report the ...