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السجلات المعروضة 17365 -- 17384 من 49434
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Nitrogen fixation in polluted sea water of Alexandria coast, Egypt.
( Qatar University , 1990 , Article)The inshore area of the Mediterranean water, west of Alexandria, Egypt, is subjected to different types of pollutants. Nitrogen fixation rate was studied in this area in relation to some environmental factors such as pH, ... -
Nitrogen Transformations as affected by some factors at cultivated soils in Saudi Arabia
( Qatar University , 2001 , Article)The influence of serial concentration of salts (0.5, 1.0 and 1.5%), application of organic matter (0.5, 1.0 and 1.5% of wheat strat) and varying soil moisture content 50, 70 and 90%) on nitrification in sandy loam soil was ... -
Nitrogen Transformations As Affected By Some Factors at Cultivated Soils In Saudi Arabia
( Qatar University , 2000 , Article)The influence of serial concentration of salts (0.5, 1.0 and 1.5%), application of organic matter (0.5, 1.0 and 1.5% of wheat straw) and varying soil moisture content (50, 70 and 90%) on nitrification in sandy loam soil ... -
Nitrogen-fixing cyanobacteria as a potential resource for efficient biodiesel production
( Elsevier Ltd , 2020 , Article)The incessant utilization of non-renewable energy sources persistently pollutes the earth's atmosphere and thus requires the immediate substitution by renewable energy sources such as biofuel. In this study, several ... -
Nitrogenization of Biomass-Derived Porous Carbon Microtubes Promotes Capacitive Deionization Performance
( Chemical Society of Japan , 2021 , Article)Nitrogenization of porous carbon provides an effective methodology to promote capacitive deionization (CDI) performance. Exploring a new class of nitrogen-doped porous carbons from waste biomass over commercially available ... -
Nitron tetrachloroaurate(III) electrodes with poly(vinyl chloride) and liquid membranes for the selective determination of gold
( Elsevier , 1991 , Article)PVC matrix and liquid membrane electrodes have been developed for direct potentiometric determination of gold(III). The membranes incorporate nitron tetrachloroaurate(III) as electroactive material. Fast response for ... -
NMR Spectroscopy Database and Searching System
( Qatar University Press , 2020 , Poster)NMR spectroscopy is the most important analytical technology for organic compounds and plays the key role for the chemical characterizations and identifications in chemistry, pharmacy, materials science, environments, ... -
NMR spectroscopy of polymer nanocomposites
( Elsevier Inc. , 2016 , Book chapter)Nuclear magnetic resonance (NMR) spectroscopy is a technique of utmost significance when dealing with the characterization of the polymers and their nanocomposites. This chapter focuses on the influence of this particular ... -
No (Gulf) Country for Syrian Refugees
( The Council on Foreign Relations , 2015 , Article)A common reaction to the ongoing migrant crisis has been to blame Europe: how can the wealthy nations of western Europe allow such a tragedy? More recently, however, media and popular scrutiny have turned back toward the ... -
No assemblage required: On pursuing original consumer culture theory
( SAGE Publications Ltd , 2019 , Article)Our title plays with the promise on certain consumer goods packages of “no assembly required,” but in fact we call upon the reader to assemble new theories rather than rely on existing ones like assemblage theory. We argue ... -
No Association Between Ct Value and COVID-19 Severity and Mortality in Qatar.
( Dove Press Ltd , 2023 , Article)The association between the cycle threshold (Ct) which reflects the SARS-CoV-2 viral load and the severity of COVID-19 is still not clear. We investigated the association between Ct values, symptoms and the risk of ICU ... -
No longer locally extinct? Tracing the origins of a lion (Panthera leo) living in Gabon
( Springer Netherlands , 2018 , Article)Lions (Panthera leo) are of particular conservation concern due to evidence of recent, widespread population declines in what has hitherto been seen as a common species, robust to anthropogenic disturbance. Here we use ... -
No social distancing from food: How the COVID-19 pandemic shaped student food-related activities in the Western Balkans
( SAGE Publications Ltd , 2023 , Article)Background: The COVID-19 pandemic has influenced food preparation and consumption habits, as well as food wastage. The pandemic also affected the lives of university students worldwide; their learning and living environments ... -
Noble metal -doped graphitic carbon nitride photocatalyst for enhancement photocatalytic decomposition of antibiotic pollutant in wastewater under visible light
( Elsevier Ltd , 2019 , Article)This study the noble metal (Ag)-doped graphitic carbon nitride (g-C3N4) photocatalyst was synthesized via a facial thermal condensation method. The structure and surface elements distribution of synthesized materials were ... -
Nociceptor subtypes and their incidence in rat lumbar dorsal root ganglia (DRGs): focussing on C-polymodal nociceptors, A?-nociceptors, moderate pressure receptors and their receptive field depths
( Elsevier Ltd , 2019 , Article Review)A recent study with Ca++-sensitive-dyes in neurons in whole DRGs (Table 5) found that much lower percentages of nociceptors were polymodal-nociceptors (PMNs) (Emery et al., 2016), than the 50–80% values in many ... -
The nocturnal zonation of decapods in the subtidal zone within the reef seascape-abiotic factors defining habitats
( Oxford University Press , 2017 , Article)© International Council for the Exploration of the Sea 2017. All rights reserved. The relationship between populations of marine organisms and physicochemical gradients directly influence distributions of species within ... -
A Node Location Algorithm Based on Node Movement Prediction in Underwater Acoustic Sensor Networks
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)Aiming at the problems of the low mobility, low location accuracy, high communication overhead, and high energy consumption of sensor nodes in underwater acoustic sensor networks, the MPL (movement prediction location) ... -
Noise pollution in the hospital environment of a developing country: A case study of Lahore (Pakistan)
( Taylor and Francis Inc. , 2018 , Article)The present study investigates the noise pollution levels in public- and private-sector hospitals of Lahore. The noise pollution parameters were investigated from 20 public and 10 private hospitals. We observed that the ... -
Noisy zones of proximal development: Conversation in noisy classrooms
( Blackwell Publishing Ltd , 2011 , Article)Despite the importance of context in studies of language use, sociolinguists have ignored the impact of noise on conversational interaction. This inattention is of particular concern in classrooms where language is a ... -
NOMA-Based Coordinated Direct and Relay Transmission with a Half-Duplex/ Full-Duplex Relay
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)In this article, we propose a downlink non-orthogonal multiple access (NOMA) based coordinated direct and relay system with one cell-center user and multiple cell-edge users, where a decode-and-forward (DF) relay bridges ...
