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Now showing items 21265-21284 of 49345
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Repair of Heat-Damaged RC Beams Using Micro-concrete Modified with Carbon Nanotubes
( Korean Society of Civil Engineers , 2021 , Article)This paper investigates the use of micro-concrete modified with carbon nanotubes (CNTs) for the repair of heat-damaged reinforced concrete (RC) beams. Ten RC beams were cast and then subjected to elevated temperature of ... -
Repeated sprint ability in young basketball players: one vs. two changes of direction (Part 1)
( Taylor & Francis , 2015 , Article)The present study aimed to compare the changes of direction on repeated sprint ability (RSA) vs. intensive repeated sprint ability (IRSA) protocols in basketball. Eighteen young male basketball players performed on RSA ... -
Repeated Sprints in Fasted State Impair Reaction Time Performance
( Routledge , 2017 , Article)Objective: The aim of this study was to assess the effects of 3-day Islamic intermittent fasting (3d-IF) on cognitive performance and serum levels of neurotrophic factors (brain-derived neurotrophic factor [BDNF] and ... -
Repetitive Control Based Pwm Inverter Dead-Time Compensation For Ac Servo Drive
( Qatar University , 2002 , Article)AC servomotor speed or current controller based on PI control and/or optimal control, can not eliminate the cyclical fluctuations of speed or current when subject to periodic disturbances. However, repetitive control ... -
Repetitive scheme plugged-in parallel with Deadbeat controller for VFD fed by cascaded multilevel inverter
( IEEE , 2013 , Conference Paper)This paper proposes an experimental Real Time Digital Feedback Controller (RTDFBC) combined with a Repetitive technique to control a Variable Frequency Drive (VFD) fed by a cascaded Multi-Level Inverter (MLI). The proposed ... -
Replacement of the Engineer under the New FIDIC Red Book 2017: Issues of Agency and Privity of Contract, with a Note on Qatar
( Inderscience Enterprises Ltd. , 2020 , Article)New rules have been introduced in the 2017 edition of the FIDIC Red Book, particularly in relation to the replacement of the engineer. Hence, the contractor has now become under a time limit to respond to the relevant ... -
Replacement policies for a parallel system with shortage and excess costs
( Elsevier Ltd , 2016 , Article)It has been assumed in most maintenance models that (i) the number of units for a parallel system can be predefined precisely, (ii) maintenance cost after failure should be avoided, and (iii) age replacement can always be ... -
Replacement policies for age and working numbers with random life cycle
( Taylor and Francis Inc. , 2017 , Article)It has been modeled for several replacement policies in literatures that the whole life cycle or operating interval of an operating unit should be finite rather than infinite as is done with the traditional method. However, ... -
Replacement Policies for Periodic Damage Models
( World Scientific Publishing Co. Pte Ltd , 2017 , Article)A new periodic damage model is proposed in this paper, where the damage produced by shocks is only measured at periodic times, without considering the stochastic shocks and the cumulative process of damage in discrete ... -
Replacement policies for periodic damage models
( International Society of Science and Applied Technologies , 2016 , Conference Paper)A new periodic damage model for preventive replacement policies is proposed in this paper, where the damage produced by shocks is only measured at periodic times, without considering the mathematical models of the stochastic ... -
Replication Dynamics, Pathogenicity, and Evolution of Influenza Viruses in Intestinal Caco-2 Cells
( Qatar University Press , 2020 , Poster)BACKGROUND: Influenza virus is a major cause of respiratory infections worldwide. Besides the common respiratory symptoms, namouras cases with gastrointestinal symptoms have been reported. Moreover, influenza virus has ... -
Reply to "Comments on the Editor Re: Shi, Zumin, et al. High Chili Intake and Cognitive Function among 4582 Adults: An Open Cohort Study over 15 Years. Nutrients 11.5 (2019): 1183."
( Nature Research , 2019 , Article)No abstract . Please check the attached PDF for the content -
Reply to "Double-counting of effect sizes and inappropriate exclusion of studies in "The influence of vitamin D supplementation on IGF-1 levels in humans: A systematic review and meta_analysis"
( Elsevier , 2021 , Other)Dear Editor, We appreciate the comments provided to us in the letter from Amiri et al. We would like to offer some clarifications in response to the comments. Firstly, the authors claimed that we included the control ... -
Reply to: Let us not rush back to odds ratios in meta-analysis
( Elsevier Inc. , 2021 , Article)[No abstract available] -
Report from the extended HLA-DPA1 ~ promoter ~ HLA-DPB1 haplotype of the 18th international HLA and immunogenetics workshop
( John Wiley and Sons Inc , 2023 , Article)The primary goal of the HLA-DPA1 ~ promoter ~ HLA-DPB1 haplotype component of the 18th IHIWS was to characterise the extended haplotypes within the HLA-DP region and survey the extent of genetic diversity in this region ... -
Report from the World Health Organization’s immunization and vaccines related implementation research advisory committee (IVIR-AC) meeting, Geneva, 11–13 September 2023
( Elsevier , 2023 , Conference Paper)Evaluating vaccine-related research is critical to maximize the potential of vaccination programmes. The WHO Immunization and Vaccine-related Implementation Research Advisory Committee (IVIR-AC) provides an independent ... -
Reported Adverse Effects and Attitudes among Arab Populations Following COVID-19 Vaccination: A Large-Scale Multinational Study Implementing Machine Learning Tools in Predicting Post-Vaccination Adverse Effects Based on Predisposing Factors
( MDPI , 2022 , Article)Background: The unprecedented global spread of coronavirus disease 2019 (COVID-19) has imposed huge challenges on the healthcare facilities, and impacted every aspect of life. This has led to the development of several ... -
Reporting and methodological quality of systematic reviews and meta-analysis with protocols in Diabetes Mellitus Type II: A systematic review.
( Public Library of Science , 2020 , Article)Systematic reviews with or without meta-analyses (SR/MAs) are strongly encouraged to work from a protocol to facilitate high quality, transparent methodology. The completeness of reporting of a protocol (PRISMA-P) and ... -
Reporting in the MENA Region: Cyber Engagement and Pan-Arab Social Media
( Georgia State University , 2017 , Book Review)يرصد الكتاب الدو رالذي قامت به شبكات التواصل الاجتماعي في الانتفاضات العربية، أو ما يسمى "الربيع العربي"، التي اجتاحت منطقة الشرق الأوسط وشمال أفريقيا في السنوات القليلة الماضية، وتعتبر هذه الانتفاضات واحدة من أهم أحداث ... -
Reporting of RT-PCR cycle threshold (Ct) values during the first wave of COVID-19 in Qatar improved result interpretation in clinical and public health settings
( Microbiology Society , 2022 , Article)Introduction. The cycle threshold (Ct) value in real-time PCR (RT-PCR) is where a target-specific amplification signal becomes detectable and can infer viral load, risk of transmission and recovery. Use of Ct values in ...