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521
A nonlinear PID servo controller for computer hard disk drives
Published 2020“…A nonlinear PID scheme is proposed as an efficient hard disk drive servo controller, reducing the settling time and lowering the required control effort. The controller is capable of increasing (decreasing) damping effect when the system output is moving away from (towards) the desired track. …”
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522
Numerical analysis of spatial distribution of carbon in methane dry reforming over supported nickel catalyst in a packed bed reactor
Published 2025“…The total carbon deposited was estimated to be around 18 g after 10,000 s of Time on Stream (TOS) at 650 °C. As the temperature increased, the total carbon deposition decreased, although this reduction became negligible beyond 850 °C. …”
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523
Response of cauliflower (<i>Brassica oleracea</i> L.) to nitric oxide application under cadmium stress
Published 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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524
Kefir exhibits anti‑proliferative and pro‑apoptotic effects on colon adenocarcinoma cells with no significant effects on cell migration and invasion
Published 2014“…To assess the effect of kefir on cancer metastasis, wound‑healing and time‑lapse movies, in addition to collagen‑based invasion assay, were used. …”
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525
Impact of staying at home measures during COVID-19 pandemic on the lifestyle of Qatar’s population: Perceived changes in diet, physical activity, and body weight
Published 2021“…Participants reported increased sitting/reclining time (1.94 h/day mean increase), screen times (2.05 h/day mean increase) with p < 0.001, and decreased exercise time (0.11 h/day mean reduction) with p < 0.001. …”
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526
Modeling the influence of daily temperature and precipitation extreme indices on vegetation dynamics in Katsina State using statistical downscaling model (SDM)
Published 2023“…All the scenarios present increasing minimum and maximum temperatures and decreasing precipitation, except for RCP8.5, which predicted a more adverse trend. …”
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527
Adopting Geophysical Testing Techniques in Geotechnical Investigation and Shallow Foundation Design
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doctoralThesis -
528
Stabilization of Sandy Soil Against Internal Erosion Using Lime
Published 2021Get full text
doctoralThesis -
529
Clinical characteristics and outcome of children with acute cryptorchid testicular torsion: A single-center, retrospective case series study
Published 2024“…The median age of patients at the time of the surgery was 65 months (interquartile range (IQR) 4–136 months). …”
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530
Nonlinear Control of Brushless Dual-Fed Induction Generator With a Flywheel Energy Storage System for Improved System Performance
Published 2025“…After optimization, the SMC settling time was significantly reduced from 0.7 seconds to 19.97 milliseconds, achieving a 96.9% improvement in response speed, while its steady-state error decreased from 0.48 to 0.06, marking an 87.5% reduction in tracking error. …”
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531
Optimization of Vapor Compression Refrigeration Cycles with Clathrate Hydrates Thermal Energy Storage
Published 2021Get full text
doctoralThesis -
532
The Sources of Variance in the Helsinki Stock Exchange
Published 2017“…Furthermore, inserting the ratio of volume expectation to duration expectation in the ARMA model and the vector error correction (VEC) model, we find that the short-term variance increases (decreases) when more (less) than 1 unit share is traded for 1 unit time.…”
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533
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534
Efficiency of commercial banks in Lebanon
Published 2008“…The stochastic production and cost function estimates show that bank level inefficiency effects decreases with time and increases with number of branches, employees per branch, and ratio of staff to operating expenses.…”
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535
Small molecule inhibition of stat3 enhances survival in mice with intracerebral melanoma
Published 2008“…In addition, WP1066 decreased the level of c-Myc and survivin in melanoma cells in a dose- and time-dependent manner. …”
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conferenceObject -
536
Pore-scale simulation of fine particles migration in porous media using coupled CFD-DEM
Published 2022“…Simulations indicate that permeability reduction due to fine migration in porous media is directly proportional to flow velocity. The time required to develop bridging and subsequent clogging of the pore space that lead to permeability reduction decreases as the flow velocity increases. …”
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537
Mapping subnational HIV mortality in six Latin American countries with incomplete vital registration systems
Published 2021“…</p><h3>Results</h3><p dir="ltr">All countries displayed over a 40-fold difference in HIV mortality between municipalities with the highest and lowest age-standardized HIV mortality rate in the last year of study for men, and over a 20-fold difference for women. Despite decreases in national HIV mortality in all countries—apart from Ecuador—across the period of study, we found broad variation in relative changes in HIV mortality at the municipality level and increasing relative inequality over time in all countries. …”
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538
A Scoping Review to Find Out Worldwide COVID-19 Vaccine Hesitancy and Its Underlying Determinants
Published 2021“…Sometimes, several studies had been performed in the same country, and it was observed that vaccine hesitancy was high earlier and decreased over time with the hope of vaccine efficacy. …”
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539
One-year experience of hybrid closed-loop system in children and adolescents with type 1 diabetes previously treated with multiple daily injections: drivers to successful outcomes
Published 2022“…The participants used the sensor 88.4 ± 6.5% of the time with Auto Mode usage 85.6 ± 7.4% during 12 months of HCL system use. …”
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540
Error probability of coded STBC systems in block fading environments
Published 2006“…Results show that the performance degradation due to channel memory decreases as the number of transmit antennas is increased. …”
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