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521
Error probability of coded STBC systems in block fading environments
منشور في 2006"…Results show that the performance degradation due to channel memory decreases as the number of transmit antennas is increased. Moreover, the optimal channel memory increases with increasing the number of transmit antennas.…"
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522
Evaluation of high-temperature reverse osmosis for recycling boiler blowdown in industrial applications
منشور في 2024"…The membrane rejection decreased from 97 % at 35°C to 92 % at 60°C; due to the increase in the diffusivities of ions at higher temperatures; however, the permeate quality met the boilers feedwater specifications. …"
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523
Shared Clean Mobility Operations for First-Mile and Last-Mile Public Transit Connections: A Case Study of Doha, Qatar
منشور في 2022"…Moreover, the influence of transportation supply and spatial characteristics on the individual mode choice was estimated. Results indicate that public transit ridership can increase up to 17%. …"
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524
Treatment with a Combination of Metformin and 2-Deoxyglucose Upregulates Thrombospondin-1 in Microvascular Endothelial Cells: Implications in Anti-Angiogenic Cancer Therapy
منشور في 2019"…Treatment with a combination of 2DG (5 mM) and metformin (2 mM) also significantly decreased cell proliferation, migration and tubulogenic capacity when compared to cells that were treated with either 2DG or metformin alone. …"
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525
Synthetic Cannabinoid AB-FUBINACA Negatively Impacted the Male Fertility and Induced Testicular Toxicity
منشور في 2025"…AB-FUBINACA treatment also causes a significant dose related decrease in sperm viability. These findings were associated with higher level of oxidative stress (GP91 expression and malondialdehyde level) and elevated expression of key regulators of apoptosis (Bax and caspase-3) as well as reduced expression of mitochondrial respiratory chain complexes SDHB (II), UQCRC2 (III), and ATP5a (V) in the testicular tissue.…"
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526
Spatiotemporal Variation in Mangrove Chlorophyll Concentration using Remote Sensing Technique
منشور في 2023"…The linear increase in mangrove area signifies the importance of ongoing conservation efforts in Al Khor. …"
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527
The Sustainability (Environmental and Economical) impact of upgrading Bahrain building regulations for affordable housing units: Case study in Bahrain
منشور في 2014"…However, fast growth of cities and construction development will form a pressure on the energy demand and consequently on the environment and will contribute in the global warming due to the increase of carbon footprint. In addition to that, the Ministry of Electricity and Water states that Bahrain generates annually average of 3190 MWh and the consumption is estimated to be almost 266 MWh and for each standard household it almost 132 MWh that is 50 % of the overall electricity energy produced. …"
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528
Diagnosing type 2 diabetes using Hemoglobin A1c: a systematic review and meta-analysis of the diagnostic cutpoint based on microvascular complications
منشور في 2020"…Marked heterogeneity in prevalence estimates was found across all meta-analyses (Cochran’s Q-statistic p < 0.0001).…"
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529
Geomorphological changes in the coastal area of Farasan Al-Kabir Island (Saudi Arabia) since mid Holocene based on a multi-proxy approach
منشور في 2018"…The mid Holocene evolution of the borehole area is resulted from the detailed analysis of five sedimentary units detected along the core Matar-1, and includes three distinct stages: (a) from 5253 ± 223 y cal BP to 3138 ± 223 y cal BP, carbonate coarse-grained material consisting of coral fragments, molluscs, calcareous algae and benthic foraminifera are deposited on a shallow marine fringing reefal platform, which becomes progressively a nearshore backreef (around 3675 ± 215 y cal BP), and later (around 3138 ± 223 y cal BP) a reef ramp; (b) since 3040 ± 220 y cal BP the borehole area obtains the characteristics of a high-energy beach that receives increasing inputs of terrigenous material; (c) subsequently, a supratidal backshore setting is established influenced mostly by terrestrial processes and occasionally by marine processes, as it is indicated by the decreasing and sometimes sporadic presence of benthic foraminifera, and recently, a sedimentary veneer consisting of terrigenous, carbonate and evaporite material is formed by terrestrial, mainly wadi and aeolian, processes. © 2018 Elsevier Ltd and INQUA…"
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530
A Numerical Study of Heat Transfer and Fluid Flow in a Channel with an Array of Pin Fins in Aligned and Staggered Configurations
منشور في 2018"…The dimensionless spacing, S*, defined as the ratio of the gap between the fin walls to the fin diameter, is varied between a value of 0.5 and 1. Nine different approaching velocities are considered in this study which resulted in Reynolds number values ranging between 5 and 160. …"
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531
Hypoxic Stress Induces Complement-Mediated Lysis of Mesenchymal Stem Cells by Downregulating Factor H and CD59
منشور في 2024"…Severe hypoxia found to decrease the survival chances of MSCs after transplantation; however, little is known about the impact of severe hypoxia on modulating the complement system activity and its effect on MSCs survival. …"
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532
Influenza prevalence and vaccine efficacy among diabetic patients in Qatar
منشور في 2023"…Among the typed IVA-positive cases, 33.4% were H1N1, and 7.7% were H3N2. A significant decrease in influenza infections was reported in vaccinated DM patients (14.5%) when compared to non-vaccinated patients (18.9%) (p-value = 0.006). …"
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533
The Grid Iron Patterns & Detached Villas as the Main Drivers of Sharjah City’s Urban Sprawl
منشور في 2021"…On the demographic side, the massive external population migration that trickled towards the city resulted in a major defect in its demographic structure, which represented a decrease in the percentage of the citizen population to only about 10% of the non-citizen population. …"
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534
The Use of Building Information Modelling (BIM) in Construction: An exploration of current challenges for collaborative construction
منشور في 2018"…The Construction market represents more than 10% of the global economy, and the demand for infrastructure project is increasing due to population increase. Particularly, in the UAE, the construction market is considered one of the best markets compared to other Middle Eastern countries due to the availability of international companies involved in the construction activity. …"
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535
A new perspective on cardiovascular drift during prolonged exercise
منشور في 2021"…<p dir="ltr">Prolonged exercise induces cardiovascular drift, which is characterized by decreasing mean arterial pressure (MAP), stroke volume and heart rate increase. …"
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536
Prediction of biogas production from chemically treated co-digested agricultural waste using artificial neural network
منشور في 2020"…An ANN model consists of three layers, 15 neutrons and 260 <i>epochs</i> accurately predict the CMP with 99.1% of data within ±10% deviation of the mean experimental value. The developed model can be used to forecast the CMP as a function of operating temperature, the substrate composition, and chemical dose, and can be used for scaling-up and cost analysis purposes.…"
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537
Investigation of Groundwater Depletion in the State of Qatar and Its Implication to Energy Water and Food Nexus
منشور في 2021"…Long-term temperature data indicates that the annual mean temperature increased significantly by 1.02 °C between 1987 and 2016, while total rainfall exhibited a slight decreasing trend. …"
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538
Developing a Framework for improving Business Continuity Management success (BCM) in UAE Construction Industry
منشور في 2016"…Different kind of techniques such as frequency distribution, cross tabulation, One Way ANOVA, descriptive and pie charts as well as bar graphs Conclusion and recommendation Study concludes that labor work permit and Rain & flooding have highest mean. Larger spread value of sand storms and labor work permit factors explore that more spread out the observations are. …"
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539
Public motives and willingness to participate in first-in-human clinical trials in Saudi Arabia: A new era in the making
منشور في 2019"…Almost 71.5% expressed their intention to enroll in such trials. …"
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540
Rapid mercury removal using living indigenous microalgal communities for water treatment applications
منشور في 2025"…Kinetic studies showed superior correlation with the pseudo-second-order model (R<sup>2</sup> > 0.996), with rate constants decreasing systematically from 767.5 to 216.0 g/mg·min as concentration increased, suggesting secondary chemical interactions may also contribute to the overall mechanism. …"