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801
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802
Numerical simulation of stall development into surge and stall control using air injection in centrifugal compressors
Published 2014“…Results also showed that during surge, forces on the impeller blades increase to nearly double of its initial value and then decrease again. By using air injection at the vaneless region with different injection angles, it was found that injection with angle of 30° has a good effect on preventing surge and minimizing the pressure fluctuations comparing to other injection angles results. …”
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803
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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804
Caffeine use or napping to enhance repeated sprint performance after partial sleep deprivation: Why not both?
Published 2021“…Purpose: To compare the effect of a 20-minute nap opportunity (N20), a moderate dose of caffeine (CAF; 5 mg·kg-1), or a moderate dose of caffeine before N20 (CAF+N) as possible countermeasures to the decreased performance and the partial sleep deprivation-induced muscle damage. …”
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805
Experimental study on effective placement of PCM packets in cooling vest to improve performance in warm environment
Published 2017“…The used PCM melting temperature is 28 °C with a coverage area of 642 cm2 and total weight of the vest of 1.19 kg including 8 PCM packets (87.5 grams each). …”
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806
Co2 Removal Using Imidazolium-Based Ionic Liquid -Aspen Plus Modelling Study
Published 2023“…Additionally, a flow rate of 20,000 kg/h for the ionic liquid is optimized for the highest purity values of CO2 and CH4, and the total annualized cost for the process is 2.1 million dollars with operating expenses of 1.8 million dollars for a 20-year of plant life with a plant capacity of 4000 kg/h (0.035 Mt/year). …”
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807
Barriers and Motivators of Appropriate Antibiotic Prescription at PHCC in Qatar: Perspective of Physicians and Pharmacists
Published 2020“…Two different interview guides were constructed; one for physicians and one for pharmacists. In-depth, face-to-face, five focus groups were conducted and transcribed verbatim. …”
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808
Barriers and motivators of appropriate antibiotic prescription at PHCC in Qatar: perspective of physicians and pharmacists
Published 2020“…Two different interview guides were constructed; one for physicians and one for pharmacists. In-depth, face-to-face, five focus groups were conducted and transcribed verbatim. …”
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809
Electrocatalytic arsenite oxidation in bicarbonate solutions combined with CO2 reduction to formate
Published 2020“…Sunlight-driven water-energy nexus technologies are receiving increasing attention. This study presents a hybrid electrochemical system that catalyzes the oxidation of As(III) to As(V) with a nanoparticulate TiO2 electrocatalyst (Ti/Ir1-xTaxOy/TiO2; denoted as an n-TEC) while simultaneously converting CO2 to formate on a Bi electrode in aqueous bicarbonate solutions at circum-neutral pH. …”
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810
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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811
Bone benefits of fish oil supplementation depend on its EPA and DHA content
Published 2019“…The preventive effect of high-dose (9%) regular-fish oil (FO) against bone loss during aging has been demonstrated, but the effects of a low-dose (1%–4%) of a highly purified concentrated FO (CFO) has not been elucidated. …”
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812
Epidemiology of herpes simplex virus type 2 in Europe: systematic review, meta-analyses, and meta-regressions
Published 2023“…Seroprevalence decreased by 1% per calendar year. Pooled mean proportions of HSV-2 detection in GUD and in genital herpes were 22.0% (95% CI: 15.3–29.6%) and 66.0% (95% CI: 62.9–69.1%), respectively. …”
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813
Gas Driven Fracture during Gas Production using HeleShaw Cell
Published 2018“…The production of Methane from hydratebearing sediments requires hydrate dissociation for releasing mobile methane gas in sediments prior to gas production operation. Existence of even a small fraction of fines can greatly decrease the permeability of sandy sediments, which will affect the gas recovery process. …”
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814
Symbiotic dinoflagellates associated with corals in Qatar: characterization and physiological response to environmental change
Published 2017“…Coral bleaching events witnessed during the last decades in the Arabian Gulf are believed to be the result of the effect of heat events occurring more frequently in the region as a result of the global ocean warming. When corals are under thermal stress, their symbiotic zooxanthellae are affected, and their photosynthetic activity decreases until the stress disappears or until the zooxanthellae are expelled from the coral. …”
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815
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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816
Vegetation Changes in the Long Abandoned Farms in Qatar
Published 1984“…It was found out that following total farm abandonment, the vegetation communities start to recover in a rather slow process. This recovery process is caused and at the same time paralleled by a steady decrease in soil salinity, as salts are washed away by rain water. …”
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817
The Effects of Class IV Hemorrhagic Hypotensive Shock and Its Resuscitation with Fluids and Adjuvant Vasopressors or Cellular Energy Replenishment on the Splanchnic Microcirculatio...
Published 2016“…This was followed by phase-2 of uncontrolled hemorrhage as induced by transection of the splenic parenchyma at the two ends of the organ and severing one of the branches of the splenic artery. The transected organ was returned to the abdominal cavity for free arterial and venous bleeding until class IV hemorrhage is achieved [defined by persistent mean arterial pressure, MAP < 40 mmHg, and a shock index (ratio of heart rate and systolic arterial pressure), SI ≥ 5 for successive 10 minutes during the period of active uncontrolled bleeding]. …”
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818
Concentrated solar power driven water splitting cycle using Zn-ferrite based thermochemical redox reactions
Published 2019“…It is understood that the decrease in the PO2 and increase in the TH directly results into higher levels of O2 release i.e. higher ? …”
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819
Effects of Trehalose Administration in Patients with Mucopolysaccharidosis Type III.
Published 2023“…Decreases in mean splenic length were observed, whereas the liver volume did not change. …”
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820
Study on adaptive thermal comfort in Japanese offices under various operation modes
Published 2017“…The lower and upper limits of the optimum comfort temperature is approximately 23.5C and 26.6C in mixed-mode. In addition, it is seen that the optimum comfort temperature tends to increase and decrease at very low and high outdoor air temperatures respectively. …”
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