تصفح Biological & Environmental Sciences حسب العنوان
السجلات المعروضة 71 -- 90 من 94
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The most common mosquitoes at Al- Rayyan municipality (Qatar state) and their potential for transmitting malaria
(2015 , Master Thesis)During the period from December 2014 to April 2015, a mosquito survey (Diptera: Culicidae) was conducted at Al Rayyan Municipality, western region of Qatar. The survey aimed to identify the most common mosquitoes species ... -
MUNICIPAL BIO-SOLIDS SOIL APPLICATION: SOIL AND PLANT QUALITY AND ENVIRONMENTAL IMPLICATIONS
(2022 , Dissertation)Biosolids are utilized worldwide as an organic fertilizer and can enrich barren soils in Qatar, especially if the proper dosage is used.However, it is crucial to study this newly introduced product to the Qatari environment ... -
Northeastern Qatari coast hydrodynamic modeling for assessment of sensitive ecosystems under anthropogenic and natural stressors
(2015 , Master Thesis)The Northeastern Qatari coast, comprising diverse and sensitive flora and fauna communities (e.g. coral reefs and patches, seagrass meadows and turtles) is expected to undergo changes imposed by anthropogenic stressors ... -
Novel approach in treating industrial wastewater using metal-organic framework nanoparticles impregnated with biosurfactants.
(2024 , Dissertation)Arabian Gulf countries including Qatar are amongst the main oil and gas (O&G) producers globally. A huge amount of water is used during the upstream and downstream processes of oil and gas refiners. As a result, a large ... -
The Novel Role of BRIP1 in Breast Tumor Development and Progression
(2020 , Dissertation)Breast cancer (BC) is the most common malignancy and the leading cause of death in women worldwide. Only 5-10% of mutations in the BRCA genes are attributed to familial breast tumors in Eastern countries, suggesting the ... -
Optimizing The Remediation Of Organophosphorus Pesticide Profenofos From Water Using Activated Date Pits: Mechanistic Studies
(2019 , Master Thesis)The aim of the study was to examine the efficiency of date pits as an adsorbent to remove the organophosphate pesticide profenofos from wastewater. Various adsorption isotherms models namely Langmuir isotherm, Freundlich ... -
Phylogenetic Diversity of Cyanobacteria from Qatar Coastal Waters
(2014 , Master Thesis)Cyanobacteria represent the major microorganism phyla, being diverse and widespread group inhabiting most of the earth's environments. The recent increase of occurrence of toxic cyanobacterial strains in the marine environment ... -
A POTENTIAL APPLICATION OF MICROALGAE IN PRODUCED WATER TREATMENT
(2016 , Master Thesis)Produced water, deriving from petroleum industry as a result of oil production, constitutes of high concentration of pollutants, such as dissolved nitrogen, phosphorus, dissolved organic carbon, heavy metals and monocyclic ... -
Prospects of Biocrude Production Potential from Local Diatom
(2020 , Master Thesis)A marine diatom Nitzchia reversa was grown in 5 sq. m open raceway pond (10 cm culture depth, 500 L culture volume) in the Qatari desert environment. After 7 days of growth, the final biomass density reached 0.52 g/L, ... -
ROLE OF AEROBIC BACTERIA IN DOLOMITE FORMATION IN THE EVAPORITIC ENVIRONMENTS OF QATAR SABKHAS
(2018 , Dissertation)Sabkha (salt flats) are extreme evaporitic environments inhabited by a large diversity of halophilic microorganisms. Sabkhas have been studied to understand the microbemineral interactions that lead to the formation of ... -
ROLE OF CHRONIC CADMIUM EXPOSURE ON ADIPOSE TISSUE FUNCTION
(06-2 , Master Thesis)Cadmium (Cd) is a toxic environmental pollutant with a bioaccumulation feature that exceeds 35 years without a known biological role in the living systems. Recently, Cd was found to be accumulated in adipose tissue (AT) ... -
Role of Protein Arginine Methyltransferase 5 (PRMT5) in WNT/β--CATENIN proliferative signaling in breast cancer
(2020 , Dissertation)Protein arginine methyltransferase 5 (PRMT5) activity is dysregulated in many aggressive cancers and its enhanced levels are associated with increased tumor growth and survival. In this study, we show that PRMT5 is ... -
SCREENING, CHARACTERIZATION AND APPLICATIONS OF ENDOPHYTES FROM QATARI HALOPHYTES
(2024 , Dissertation)Saline soil poses a significant challenge for plant growth in arid and semi-arid regions. The harsh climatic and environmental conditions in Qatar and the Gulf region have led to highly saline soil, severely limiting crop ... -
Seasonal Changes in Biodiversity and Abundance of Invertebrates in Different Ecological Environments
(2013 , Master Thesis)Biodiversity is a natural quality that must be measured to be understood. It is the measurement of the quantity and diversity of the biota in an area. Each area of the world has its own unique biodiversity as defined by ... -
Seasonal Variations Of Dinophysis Species And Their Toxins In Qatari Waters, Arabian Gulf
(2019 , Master Thesis)The results of investigations from several cruises carried out in Qatari waters between 2017 and 2018 were reported. The species composition, distribution and toxicity of Dinophysis community were examined. A total number ... -
“Sources and Distribution of Suspended Particulate Matter (SPM) Using Stable Isotopes In The Central Arabian Gulf”
(2020 , Master Thesis)Suspended Particulate matter (SPM) (>0.45µm) plays a significant role in the global carbon cycle. Hence, we measured changes in concentrations of SPM with depth and at distances from shore in the exclusive economic zone ... -
Spatial and Temporal Distribution of Heavy Metals in Marine Sediment Along the Doha Bay
(2013 , Master Thesis)Concentrations of twenty five heavy metals (Ag, Al, As, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Sb, Se, Sr, V, Zn, and Hg) in surface sediment from ten transects each with five stations were studied. ... -
Symbiotic dinoflagellates associated with corals in Qatar: characterization and physiological response to environmental change
(2017 , Master Thesis)Studying coral reefs’ responses to environmental and anthropogenic stressors is crucial to ensure the development of appropriate conservation and restoration programs, especially in areas such as the Arabian Gulf where ... -
The development of novel composite materials of modified roasted date pits using ferrocyanides for the recovery of valuable metal ions from seawater reverse osmosis brine
(2021 , Master Thesis)In this project, novel composite materials from modified roasted date pits using ferrocyanides were developed and investigated for the recovery of valuable metal ions (Li+ and Sr2+) from seawater reverse osmosis (RO) ... -
The Use of Novel Ionic Liquid and Cellulose Nanocrystals Modified Date Pits as Adsorbents for Groundwater Treatment
(2021 , Master Thesis)This study aims to investigate the remediation of Li1+, Mo6+, and B3+ from groundwater using an innovative low-cost adsorbent. Agriculturally abundant date pits were modified to be successfully used as an adsorbent. Chemical ...