بدائل البحث:
ng decrease » _ decrease (توسيع البحث)
cm decrease » _ decrease (توسيع البحث)
50 ng » 10 ng (توسيع البحث), 50 μg (توسيع البحث)
5 cm » _ cm (توسيع البحث)
ng decrease » _ decrease (توسيع البحث)
cm decrease » _ decrease (توسيع البحث)
50 ng » 10 ng (توسيع البحث), 50 μg (توسيع البحث)
5 cm » _ cm (توسيع البحث)
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Ferroelectric Properties and Electrocaloric Effect in Dy2O3 Substitution on Lead-Free (Na0.5 Bi0.5)0.94 Ba0.06TiO3 Ceramic
منشور في 2023"…Using the direct EC measurement, the ceramic corresponding to y = 0.02 exhibited a significant EC response, where ΔT = 1.2 K under 5 kV/mm. The incorporation of Dy was found to enhance the EC responsivity coefficient ζ = iT/ΔE), with a best value of ζ = 0.24 K.mm/kV for y = 0.02.…"
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3
The maxima in northerly wind speeds and wave heights over the Arabian Sea, the Arabian/Persian Gulf and the Red Sea derived from 40 years of ERA5 data
منشور في 2020"…The northern Arabian Sea including the Sea of Oman exhibits significant decreasing trend in northerly maximum wind speed (− 1.4 cm/s/year) and Hs (− 0.67 cm/year), while the Gulf and the Red Sea exhibit sectorial contrasting trend, indicating the dominance of localized effects in modifying the regional climate. …"
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4
Mercury pollution in doha (Qatar) coastal environment
منشور في 1994"…1). Organic Hg (0.6 ng L?1) contributed only 5.0% of total Hg. Mercury showed a strong tendency to be associated with suspended matter in Doha coastal waters, as it represented about 73.0% of the total. …"
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5
Estimating the production and mortality of fine roots using minirhizotrons in a Pinus densiflora forest in Gwangneung, Korea
منشور في 2016"…The annual FP and FM values at the 0–30 cm soil depth were 3200.2 and 2271.5 kg ha−1 yr −1, respectively. …"
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6
Dynamics of Neisseria gonorrhoeae transmission among female sex workers and clients: A mathematical modeling study
منشور في 2024"…Increasing condom use from 10 % to 50 % lowers NG prevalence among FSWs, clients, and their spouses from 12.2 % to 6.4 %, 1.2 % to 0.5 %, and 0.4 % to 0.2 %, respectively. …"
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Effect of outdoor temperature on the power-conversion efficiency of newly synthesized organic photosensitizer based dye-sensitized solar cells
منشور في 2018"…The results indicate that DSSC shows power conversion efficiency of 2.58% at 25 °C under air mass (AM) 1.5 G illumination at 100 mW/cm2. It has also been found out that the efficiency of DSSCs drops with the rise of temperature. …"
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8
Investigation of Spatiotemporal Variability of Microplastics in Qatar's Cstal Environment
منشور في 2016"…For each sampling, sediments from the top 2 cm were collected at the most recent high tidal mark on shore from a square area (0.5 0.5 m) along the shore line. …"
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9
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Detoxification assays of tunisian tannery wastewater under nonsterile conditions using the filamentous fungus aspergillus Niger
منشور في 2019"…Characterization of effluents also revealed high salt levels (EC > 17 mS/cm) and high organic matter content (25 g/L for the UE and 7.2 g/L for the FE) but a low biodegradability since BOD5 did not exceed 2.5 and 1.25 g/L for the UE and the FE, respectively. …"
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11
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Analysis of dopant diffusion in molten germanium induced by pulsed nd : yag laser
منشور في 1995"…Doped sample Tann = 200- 500 C for time t mn = 45 subjected to subsequent thermal annealing (at the temperature and to plused leacr annealing (en<5rgy density in a min) pluse E=5.2 - 9.5 J/cm2) in order to establish optimal condition. …"
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13
Effects of polyphenol-rich traditional herbal teas on obesity and oxidative stress in rats fed a high-fat–sugar diet
منشور في 2022"…Data showed that higher doses of Hibiscus rosa-sinensis significantly reduced the rat's BMI (0.50 g/cm2) in comparison with the high-fat–sugar diet group (0.79 g/cm2). …"
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14
Enhanced photovoltaic performance with co-sensitization of a ruthenium(ii) sensitizer and an organic dye in dye-sensitized solar cells
منشور في 2016"…Upon optimization, the device made of 0.3 mM N3 + 0.2 mM RK-1 yielded Jsc = 18.1 mA cm2, Voc = 888 mV, FF = 57.44, and ? = 9.23%. This performance is superior to that of solar cells sensitized with either N3 (6.10%) or RK-1 (5.82%) fabricated under the same conditions. …"
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15
Climatology and variability of wind speeds along the southwest coast of India derived from Climate Forecast System Reanalysis winds
منشور في 2022"…The study reveals significant decreasing trends in annual mean wind speeds, of the order of −2.0 to −2.5 cm·s−1·year−1, for the period 1979–2019. …"
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The effects of tart cherry juice with whey protein on the signs and symptoms of exercise-induced muscle damage following plyometric exercise
منشور في 2017"…Methods: Sixteen participants (10 male, 6 female, Age: 23 ± 5 years, Height: 171 ± 13 cm, Weight: 79 ± 16 kg) ingested two 240 mL bottles of TCW or placebo beverage (PLA) twice daily for 10 days. …"
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Tobacco Use and Its Health Effects among Professional Athletes in Qatar
منشور في 2016"…A total of 108 male professional athletes participated in the study from ten ball game teams in the same sport league in Qatar (age = 26.4 ± 5.1 yrs, height = 190.6 ± 11.9 cm, and weight = 91.5 ± 16.4 kg). …"
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19
Study the efficiency of Ultrasonic Technology in Removal of Algae from Surface Waters
منشور في 2024"…The dominant algae genus was identified using a light microscope, and ultrasound waves with a low frequency of 40 kHz and a power density of 0.024 W/cm³ were applied at different time intervals (0 – 80 minutes) at time intervals of 5 minutes. …"
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Concrete Pavement Truck Equivalence Factors For Upgrades
منشور في 1999"…Three values for terminal levels of serviceability of 2, 2.5 and 3 were considered. The paper reveals that the upgrade truck equivalence factors increase as the upgrade slopes as well as slabs thickness increase. …"
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