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السجلات المعروضة 132 -- 151 من 428
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Evaluation of Petrophysical Characteristics of Mishrif and Yamama Reservoirs, in Garraf Oil Field, Southern Iraq, Based on Well-Logging Interpretation
( College of science/ University of Baghdad , 2022 , Article)The Mishrif and Yamama Formation are the main reservoirs in the Garraf oilfield, Nasiriyah city, of the Euphrates Subzone, Mesopotamian Basin, Southern Iraq. The Garraf oilfield structural pattern corresponds with the ... -
Evaluation of processed sludge as a sustainable and efficient soil conditioner and organic fertiliser for Qatari soil
( Inderscience Publishers , 2022 , Article)Qatar is implementing the use of treated sludge as a sustainable resource in the green infrastructure. The study employed an experimental research design where five samples (two kilograms each) of pelletised sludge of both ... -
Evaluation of Roholtiella sp. Extract on Bell Pepper (Capsicum annuum L.) Yield and Quality in a Hydroponic Greenhouse System
( Frontiers Media , 2022 , Article)This study was carried out to investigate the impacts of cyanobacteria (Roholtiella sp.) high-value product extract (HVPE) and water resuspended biomass WRB treatments on bell pepper production using the hydroponic system ... -
Evaluation of Satellite Retrievals of Chlorophyll-a in the Arabian Gulf
( MDPI , 2017 , Article)The Arabian Gulf is a highly turbid, shallow sedimentary basin whose coastal areas have been classified as optically complex Case II waters (where ocean colour sensors have been proved to be unreliable). Yet, there is no ... -
Evaluation Of The Sensitivity Of Qatari Marine Microalgae Synechococcus Sp, To Three Reference Toxicants
( Hamad bin Khalifa University Press (HBKU Press) , 2014 , Conference Paper)Background Marine phytoplankton form the basis of the marine food chain and are essential for the normal functioning of ecosystems. Any disturbance to this component, due to the release and accumulation of toxic compounds ... -
Evaluation of the source rock potential of the Unyazah Formation (late Carboniferous-Early Permian) in Dukhan Field, Qatar
( Taylor & Francis (Routledge) , 2019 , Article)Twenty samples were collected from the Unayzah Formation in three wells from Dukhan Field, Qatar. Many samples were of poor quality due to the low TOC content containing gas prone-kerogen type III and IV. The Rock-Eval ... -
Excess pCO2 and carbonate system geochemistry in surface seawater of the exclusive economic zone of Qatar (Arabian Gulf)
( Elsevier , 2022 , Article)Dissolved inorganic carbon (DIC) and total alkalinity (TA) were sampled in December 2018 and May 2019 in the Exclusive Economic Zone (EEZ) of Qatar in the Arabian Gulf. pCO2, pH and CO32− were calculated from DIC and TA. ... -
Experimental warming differentially affects vegetative and reproductive phenology of tundra plants
( Nature Research , 2021 , Article)Rapid climate warming is altering Arctic and alpine tundra ecosystem structure and function, including shifts in plant phenology. While the advancement of green up and flowering are well-documented, it remains unclear ... -
Extending the southern range of four shrimps (Crustacea: Decapoda: Stenopodidae, Hippolytidae and Alpheidae) in southwestern Atlantic (27oS) and confirming the presence of Mediterranean Stenopus spinosus Risso, 1827 in Brazil
( Zootaxa , 2015 , Article)In subtidal zones, certain shrimp species with cryptic behaviour represent a gap in the biodiversity description in many places in the world. This study extends the southern limit of Stenopus hispidus (Oliver, 1811), Alpheus ... -
Extraction and Evaluation of Lineaments From DEMs Generated from Different Bands of Microwave Data and Optical Data: A Case Study for Jahazpur Area, Bhilwara, India
( CRC Press , 2023 , Book chapter)This study extracts and examines lineaments from microwave and optical remote sensing data. The study discusses two DEMs of the Jahazpur area, Bhilwara, India, generated from C-band microwave data of Sentinel-1A and L-band ... -
Extreme 15N Depletion in Seagrasses
( Springer New York LLC , 2016 , Article)Seagrass beds form an important part of the coastal ecosystem in many parts of the world but are very sensitive to anthropogenic nutrient increases. In the last decades, stable isotopes have been used as tracers of ... -
Extreme value analysis of wave climate around Farasan Islands, southern Red Sea
( Elsevier , 2020 , Article)The study investigates extreme value analysis of wave climate around the Farasan islands’ protected coastal zone in the southern Red Sea. It provides an overall idea of the extreme wave conditions in the southern Red Sea, ... -
Fabrication of low emissivity paint for thermal/NIR radiation insulation for domestic applications
( Elsevier , 2022 , Article)Recently, low-emissivity paint has gained more importance than commercial paints. Low emissivity (Low-E) Paint also termed as a coating for radiation control, in which the emissivity of radiations of longer waves are reduced ... -
Facies architecture and depositional model for a fine-grained hybrid-energy delta: An example from the Upper Cambrian to Lower Ordovician Barik Formation, Central Oman
( Wiley , 2021 , Article)Recognizing ancient deltas' depositional architecture is challenging due to the complex interplay of the fluvial, waves, and tidal processes. The integration of field-based sedimentological and trace fossils studies of the ... -
Factors influencing the vertical distribution of microplastics in the beach sediments around the Ras Rakan Island, Qatar
( Springer , 2021 , Article)Microplastic (MP) pollution is an emerging environmental problem, particularly in the marine environment, and nations are concerned about this issue. In this study, an attempt has been made to investigate the vertical ... -
Faunal mediated carbon export from mangroves in an arid area
( Elsevier , 2020 , Article)The outwelling paradigm argues that mangrove and saltmarsh wetlands export much excess production to downstream marine systems. However, outwelling is difficult to quantify and currently 40–50% of fixed carbon is unaccounted ... -
Feeding on intertidal microbial mats by postlarval tiger shrimp, Penaeus semisulcatus De Haan
( Springer Berlin / Heidelberg , 2009 , Article)A series of experiments investigated the potential role of microbial mats in nutrition of the early settlement stages of Penaeus semisulcatus. From 3 days post-metamorphosis, the microbial mat supported high growth and ... -
Feminization of hawksbill turtle hatchlings in the twenty-first century at an important regional nesting aggregation
( Inter Research , 2021 , Article)Projected climate change is forecasted to have significant effects on biological systems worldwide. Marine turtles in particular may be vulnerable, as the sex of their offspring is determined by their incubating temperature, ... -
Feminization of hawksbill turtle hatchlings in the twenty-first century at an important regional nesting aggregation
( Qatar University Press , 2021 , Poster)Projected climate change is forecasted to have significant effects on biological systems worldwide. Marine turtles in particular may be vulnerable, as the sex of their offspring is determined by their incubating temperature. ... -
Field and laboratory investigation of tarmat deposits found on Ras Rakan Island and northern beaches of Qatar
( Elsevier , 2020 , Article)© 2018 Elsevier B.V. Beaches of Ras Rakan Island, located off the northern tip of Qatar, are extensively contaminated by highly weathered tarmat deposits. The focus of this study is to determine the possible source of the ...