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381
Analysis of dopant diffusion in molten germanium induced by pulsed nd : yag laser
Published 1995“…Laser - induced diffusion of various dopant elements into intransic germanium based on the dipping of Ge into dopant solution, have been used to produce doped ge layer using yag pulse laser with 300us duration ( A, = 1.664(1 m), Four point probe measurments of the layer conductance were used to study the effect of the doping controlled parameters mainly laser flunce, dopant solution, and annealing conditions. …”
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382
Trends in prevalence of depression and anxiety symptoms and effects of sociodemographic variables before and after the first wave of COVID-19 in Qatar
Published 2022“…The data for 2020/21 showed a 35.1% and 29.2% decrease in depression and anxiety symptoms scores compared to pre-pandemic years (2017/2018) after adjusting for sociodemographic factors. …”
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383
High temperature thermal stability of innovative nanostructured thin coatings for advanced tooling
Published 2014“…The main problem with steel, isthat itexhibits a relatively low hardness (below 10 GPa) which strongly decreases upon annealing above about 600 K.Thus, the majority of modern tools are nowadays coated with hard coatings that increase the hardness, decrease the coefficient of friction and protect the tools against oxidation. …”
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384
Effect of concentration of DOC loaded TiO 2 nanotubes on the corrosion behavior of smart coatings
Published 2019“…Various contents of the encapsulated TiO2 nanotubes (1, 3 and 5 wt%) were thoroughly dispersed into the epoxy matrix and the resulting composites were then applied on a cleaned steel substrate using doctor blade technique to develop smart coatings. …”
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385
Structural performance and moment redistribution of basalt FRC continuous beams reinforced with basalt FRP bars
Published 2021“…This study investigated the structural performance and moment redistribution of basalt fiber reinforced concrete (BFRC) continuous beams reinforced with basalt fiber reinforced polymers (BFRP) bars. A total of 10 reinforced concrete (RC) continuous beams over two equal spans of 1800 mm were tested under five-point loading until failure. …”
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386
Utilization of Emergency Services by Children with Asthma in Qatar
Published 2022“…Background: Asthma is a leading chronic disease in children worldwide, which if left untreated or poorly controlled, can lead to altered lung function and poor quality of life. 1 Early detection and improved control of asthma are recommended to decrease utilization of emergency services and hospitalizations. …”
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387
Overconfident results with the bivariate random effects model for meta-analysis of diagnostic accuracy studies
Published 2022“…Diaz found that the performance of the bivariate model deteriorates when between-study heterogeneity increases and the number of studies decrease.5 Our simulation studies found similar results—with moderate levels of heterogeneity (tau2 = 1), the coverage probabilities of Se, Sp, and the diagnostic odds ratio (DOR) with the bivariate model dropped below the nominal level.6 Diagnostic accuracy studies usually favor sensitivity over specificity, or vice versa leading to diagnostic 2 × 2 tables with one or more of the cells with low frequency or zero counts. …”
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388
Self-healing performance of smart coatings modified with different corrosion inhibitors.
Published 2020“…EIS measurements revealed the decent corrosion inhibition efficiency of these inhibitors in order of DDA>NMTU. As a result, they are a favorable solution for longer endurance of coated piping steel and decreased operation expense contributing to economic saves, materials reliability and safety…”
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389
Association between Insulin and Nitric Oxide in Human Retinal Microvascular Endothelial Cells in vitro
Published 2016“…In conclusion, this study demonstrated that Hyperglycemia causes an increase in ROS/oxidative stress and apoptosis, while insulin promotes a significant decrease in ROS and apoptosis, eNOS mediated NO production increases with hyperglycemia but remarkably decreases with insulin treatment after 1 hour, 2 hours and 4 hours, insulin could counteract the hyperglycemic effect on AKT/pI3 kinase which mediates NO production and VEGF-A, decreased adhesion molecules p-selectin involved in barrier disorder of retinal endothelial cells. …”
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390
Molecular and Structural Changes in Induced-Brain Stroke Tissue Using FTIR Imaging Spectroscopy, Scanning Electron and Atomic Force Microscopy
Published 2016“…Results and Discussions: The FTIR spectroscopy results indicated that the white matter is richer in lipid content than the grey matter as shown in Figs. 1 and 2. The infrared spectrum images showed a decrease in the lipid content of the white matter associated with the induced stroke brain sections. …”
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391
Mobile Epifauna Associated To Artificial Substrates In Offshore Qatari Waters
Published 2019“…Multivariate analysis for abundance and biomass showed that both Site and Depth, as well as their interaction, had significant effects on the mobile macrofaunal community. A general trend of total abundance and average number of taxa decreasing with depth was observed, although with some notable exceptions. …”
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392
Numerical and experimental investigation on corrugation geometry for metallic tubes under lateral loading
Published 2018“…Our results showed that using vertical elliptical corrugation decrease the densification point. Moreover, there is a gradual enhancement of mean crushing load by moving from the horizontal elliptical corrugations to the vertical ones. …”
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393
Effect of Magnetic Baffles and Magnetic Nanofluid on Thermo-Hydraulic Characteristics of Dimple Mini Channel for Thermal Energy Applications
Published 2022“…The increment changed to 1.82%, 8.16%, and 22.31% for a pitch = 5 mm and 1.01%, 5.96%, and 21.38% for a pitch = 2.5 mm. …”
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394
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395
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396
Pharmacoeconomic evaluation of voriconazole vs. liposomal amphotericin B in empiric treatment of invasive fungal infections in Turkey
Published 2013“…The current pharmacoeconomic evaluation investigated the use of liposomal amphotericin B (LAmB) and voriconazole for the empiric treatment of IFI in the Turkish setting.Methods: Decision analytic modelling was used to create a pathway for patient treatment with a 5-point composite outcome measure. …”
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397
Thermal properties of phase-change materials based on high-density polyethylene filled with micro-encapsulated paraffin wax for thermal energy storage
Published 2015“…Microcapsules consisting of paraffin wax cores with a melting point of approximately 42 °C and a melamine-formaldehyde resin shell were synthesized using in situ polymerization. …”
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398
Modification of Pd/CeO2 catalyst by Atomic Layer Deposition of ZrO2
Published 2016“…Methane-oxidation rates in 0.5% CH4 and 5% O2 were slightly lower on the ZrO2-covered catalyst when both materials were calcined at 673 K but the activity of the ZrO2-modified catalyst did not decrease with catalyst calcination temperature. …”
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399
Effect of serum lipoproteins on stereoselective halofantrine metabolism by rat hepatocytes
Published 2012“…Experimental hyperlipidemia has shown to decrease cytochrome P450 3A4 and 2C11 expression and to increase liver concentrations and the plasma protein binding of halofantrine (HF) enantiomers. …”
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400
Utilizing Recycled Polypropylene Fibers as Reinforcement for Concrete Beams
Published 2020“…The various fiber content ratios tested in this investigation are 0.25, 0.5 and 1%. Based on the results of this study, the presence of recycled PP fibers in concrete decreases its workability; the addition of an adequate superplasticizer to the concrete mix becomes then necessary. …”
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