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81
Tribo-mechanical properties evaluation of HA/TiO2/CNT nanocomposite
منشور في 2021"…The results from nanoindentation tests showed that Young's modulus of the S3.0 sample was 58.1% greater than that of the S0 sample. …"
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82
Forecast of the outbreak of COVID-19 using artificial neural network: Case study Qatar, Spain, and Italy
منشور في 2021"…The model sensitivity was analyzed using the root mean square error (RMSE), the mean absolute percentage error and the regression coefficient index R2, which yielded highly accurate values of the predicted correlation for the infected and dead cases of 0.99 for the dates considered. …"
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83
Association Between Serum Bicarbonate Levels and Prediabetes and Subclinical Inflammation in Young Healthy Adults: A Cross-sectional Study
منشور في 2023"…Results: A total of 825 participants with mean age 29.2 years (5.9) of which 365 (44.2%) were males. …"
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84
Fecal Carriage and Molecular Characterization of Carbapenemase-Producing Enterobacterales in the Pediatric Population in Qatar
منشور في 2021"…All 9 blaOXA-48-type-gene-containing E. coli sequence type 38 (ST38) strains were isolated from patients without international travel history. The mean quarterly incidence of fecal carriage decreased more than 6-fold after the implementation of coronavirus disease 2019 (COVID-19)-related international travel restrictions in Qatar in mid-March 2020. …"
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85
The Effects of Statin Treatment on Serum Ferritin Levels: A Systematic Review and Meta-Analysis
منشور في 2022"…The effect size was determined using weighted mean differences (WMDs) and the corresponding 95% confidence intervals (CIs). …"
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86
The Structure of the Free Volume in Poly(styrene-co-acrylonitrile) from Positron Lifetime and Pressure Volume Temperature (PVT) Experiments
منشور في 2004"…The mean hole volume, vh, varies in PS between 105 Å3 (27 °C) and 220 Å3 (190 °C), and shows a systematic decrease with increasing AN content, at Tg from 121 Å3 for PS to 102 (±2) Å3 for SAN50. …"
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87
Study of Magnetic Properties and Lattice Dynamics of the Cdx Co1-x Ferrite System by MossbauerEffect
منشور في 1981"…The results showed also that the introduction of the Cd2"^ ions decreased the f-value and Debye temperature, while the mean square velocity of the "Fe nucleus was not affected greatly specially at low and normal temperatures. …"
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88
A Model For A Narrow-Cut Fractionating Column
منشور في 1997"…The model can calculate boiling point and dew point on the feed plate, the number of liquid and vapour moles, the enthalpy of feed and the final product distribution at the top and bottom of the column. …"
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89
The impact of using produced water for plant irrigation and its effects on plants and soil characteristics
منشور في 2017"…The results showed high concentration of total dissolved solids (TDS), chloride, sodium, boron ions and sodium adsorption ratio as 300, 122, 61, 0.038 g/L and 139.9 meq/L respectively. The generated water was used after different dilution:0, 10, 20, 30, 40 and 50% for plant irrigation in greenhouse for Medicago sativa, Zea mays, Helianthus annus, Sorghum bicolor, Phramites australis and Salsola baryosma using a complete randomized design with three replications. …"
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90
Seasonal Variations of Acoustic Properties in Ropme Sea Area
منشور في 1993"…Sound speed was similar in the upper 60 meters. From an acoustic point of view, the basin west of 56°E is considered as a shallow area while the Gulf of Oman is a deep area. …"
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91
Experimental studies on the biodiesel production parameters optimization of sunflower and soybean oil mixture and DI engine combustion, performance, and emission analysis fueled wi...
منشور في 2019"…Exhaust oxygen (EO) emissions for D30B70 was about 0.98% higher than diesel. Exhaust gas temperature (EGT) has observed for all biodiesel blends. …"
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92
Effect Of Sand Blasting On Soda Lime Glass Properties
منشور في 2003"…The variation of the relative efficiency of glass protected solar panels versus sand blasting duration (seen up to 300 min) shows a slow regular decrease until 0.91 for a 90° impact angle and until 0.95 for 30°. …"
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93
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94
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95
The frequency of polycystic ovary syndrome in young reproductive females in Qatar
منشور في 2016"…Hormonal analysis demonstrated a significant increase in androgens (total testosterone, dehydroepiandrosterone sulfate, and free testosterone), and a significant decrease in sex hormone-binding globulin in our PCOS group, with a P-value ,0.05. …"
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96
Regional variations in incidence of surgical site infection and associated risk factors in women undergoing cesarean section: A systematic review and Meta-Analysis
منشور في 2025"…We found with moderate certainty that the overall SSI incidence in CS patients was 7.0 % (95 % CI: 6.0 %–8.0 %). The SSI incidence in LMICs was 8.0 % (95 % CI: 6.0 %–10.0 %) with moderate certainty, while the incidence in HICs was 5.0 % (95 % CI: 4.0 %–7.0 %) with low certainty. …"
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97
Response of cauliflower (Brassica oleracea L.) to nitric oxide application under cadmium stress
منشور في 2022"…Our results illustrated that the increasing levels of Cd in the sand, significantly (P < 0.05) decreased shoot length, root length, shoot fresh weight, root fresh weight, shoot dry weight, root dry weight, germination percentage, germination index, mean germination time, time to 50% germination, chlorophyll a, chlorophyll b, total chlorophyll and carotenoid contents in all genotypes of B. oleracea. …"
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98
Concrete Pavement Truck Equivalence Factors For Upgrades
منشور في 1999"…The upgrade truck equivalence factors were developed taking into consideration the following three values for upgrade namely; 0%, 8% and 12%, four values of slab thickness namely; 6, 8, 10 and 12 inches (15.24, 20.32, 25.40 and 30.48cm) and two extreme ratios of H / B of 0.2 and 1.0. …"
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99
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100
Human health risks associated with the consumption of groundwater in the Gaza Strip
منشور في 2023"…After 20 years since the first comprehensive study, it was found that groundwater salinity increased by 30 %, due to seawater intrusion. On the other hand, nitrate (NO3) decreased by 30 %, due to expansion of the sewer network and decrease in the number and distribution of septic tanks. …"
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