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a decrease » _ decrease (Expand Search), _ decreased (Expand Search), _ decreases (Expand Search)
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1261
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1262
Effect of reinforcement concentration on the properties of hot extruded Al-Al2O3 composites synthesized through microwave sintering process
Published 2017“…Results showed that, as the content of hard ceramic particles increases, it improves overall mechanical properties including microhardness, 0.2% yield strength, ultimate compression/tensile strength, and Young's modulus while the ductility and co-efficient of thermal expansion decreases. XRD patterns and SEM/EDS mapping images show a uniform distribution of Al2O3 particles in the Al matrix. …”
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1263
Experimental study of exhaust emissions and performance of a dual fuel IDI diesel engine
Published 1999“…Methane and, sometime, propane were used as the gaseous fuel while regular diesel fuel was used as the pilot one. The admission of more gaseous fuel with the intake air increased the engine power, thermal efficiency, and NOx emissions while CO and UHC emissions increased up to the flame initiation limit beyond which they decreased sharply. …”
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1264
Energy conversion of heat from abandoned oil wells to mechanical refrigeration - Transient analysis and optimization
Published 2012“…Results show that at realistic and conservative conditions, the geofluid temperature considerably decreases for the first four months of operation (by an average of 30 °C) and tends to be constant after half a year of operation. …”
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1265
Fabrication of hesperidin hybrid lecithin-folic acid silver nanoparticles and its evaluation as anti-arthritis formulation in autoimmune arthritic rat model.
Published 2023“…The results showed decreased pro-inflammatory cytokines (IL-1β, IL-6 and TNF-α) in the peritoneal and spleen cells coupled with an increase in anti-inflammatory cytokine TGF-β1. …”
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1266
Visual feedback training in young karate athletes
Published 2014“…Results: ANOVA revealed an interaction training for type × F(1,360)=78.892 at p<0.001 (η2=33.178) and for training × time F(1,36)=7.479 with p<0.010 (η2=13.432). …”
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1267
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1268
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1269
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1270
Effect of reinforcement concentration on the properties of hot extruded Al-Al2O3 composites synthesized through microwave sintering process
Published 2017“…Results showed that, as the content of hard ceramic particles increases, it improves overall mechanical properties including microhardness, 0.2% yield strength, ultimate compression/tensile strength, and Young's modulus while the ductility and co-efficient of thermal expansion decreases. XRD patterns and SEM/EDS mapping images show a uniform distribution of Al2O3 particles in the Al matrix. …”
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1271
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1272
Nanocomposite Ni-TiO2 coatings produced by pulsed electroplating
Published 2014“…A systematic study of Ni-xTiO2 coatings with different TiO2 concentrations (x50-20 g L-1) has been conducted. The coatings were characterised using SEM, XRD, microhardness and wear tests. …”
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1273
Influence of temperature on tire-pavement noise in hot climates: Qatar case
Published 2021“…Statistical analysis demonstrated a strong relationship between noise intensity and temperature, especially at a frequency above 1250 Hz. …”
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1274
Influence of temperature on tire-pavement noise in hot climates: Qatar case
Published 2021“…Statistical analysis demonstrated a strong relationship between noise intensity and temperature, especially at a frequency above 1250 Hz. …”
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1275
A Review of Pharmacogenetics of Antimalarials and Associated Clinical Implications
Published 2017“…Lumefantrine concentrations were also influenced by ABCB1 variants in the presence of nevirapine. The most critical pharmacogenetic consideration identified was the association of glucose-6-phosphate dehydrogenase deficiency with development of hemolytic anemia and decreased hemoglobin levels in patients treated with primaquine or a combination of chlorproguanil-dapsone-artesunate. …”
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1276
Online monitoring of climatic parameters: a statistical study about environmental changes in Qatar
Published 2016“…In this study, we have focused on monitoring of temperature and rainfall pattern in Qatar through different control charting schemes, i.e., memory less (Shewhart) and memory type (EWMA and CUSUM) control charting structures; while time series analysis was performed for the period of 1990-2012. …”
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1277
An efficient green ionic liquid for the corrosion inhibition of reinforcement steel in neutral and alkaline highly saline simulated concrete pore solutions
Published 2020“…The inhibition efficiency was improved as the concentration of Q-32 and pH values were increased. However, it decreased as the temperature was raised. A Q-32 concentration of 20 µmol L–1 exhibited a 94% inhibition efficiency at 20 °C. …”
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1278
Metabolomics Profiling of Stages of Coronary Artery Disease Progression
Published 2024“…We performed a metabolomic analysis on 221 participants from four different groups: (I) healthy individuals, (II) individuals with hypercholesterolemia (HC), (III) individuals with both HC and hypertension (HT) or diabetes, and (IV) patients with self-reported coronary artery disease (CAD). …”
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1279
Tandem osmotic engine based on hydrogel particles with antipolyelectrolyte and polyelectrolyte effect fuelled by both salinity gradient modes
Published 2021“…Exchange of sulfobetaine with methacrylamide (SBAm), the main polymer backbone, revealed a positive increase in energy recovery of 670 J kg−1 with a mean power of 0.19 W kg−1 for the tandem system operating under the same parameters (SPA@SBAm). …”
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1280
Community structure and activity of a highly dynamic and nutrient-limited hypersaline microbial mat in Um Alhool Sabkha, Qatar
Published 2014“…We investigated the chemical composition, the microbial activity and biodiversity of the four main layers (L1-L4) in the photosynthetic mats. Chlorophyll a (Chl a) concentration and distribution (measured by HPLC and hyperspectral imaging, respectively), the phycocyanin distribution (scanned with hyperspectral imaging), oxygenic photosynthesis (determined by microsensor), and the abundance of photosynthetic microorganisms (from 16S and 18S rRNA sequencing) decreased with depth in the euphotic layer (L1). …”
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