Browsing Research Units by Title

Now showing items 3158-3177 of 4562

    • Promoting cycling activities in the State of Qatar: Challenges and potential treatments 

      Almallah, Mustafa; Alhajyaseen, Wael; Hussain, Qinaat; Mohammad, Anas; Alqaradawi, Mohammed ( Elsevier B.V. , 2022 , Article)
      In the last few decades, cycling has received an increased attention due to its health, social, and economical benefits. Many countries are adopting different policies to encourage cycling as a daily mode of transport. In ...

    • Promoting Learning Outcomes Assessment in Higher Education : Factors of Success 

      Ndoye, Abdou ( Penn State University Press , 2013 , Article)
      This article presents results of a study on factors that contribute to successful learning outcomes assessment practices. This qualitative study uses the case study method to analyze factors of success in higher education ...

    • Promoting sustainable businesses for strong local communities: Qatar's wild herbal plants industry 

      Bejarano, Johann Sebastian Reyes; Rodrigues, Thiago Sabatinelli; Sánchez, Columba Marcelli; Al-Ghanim, Kaltham; Al-Saidi, Mohammad ( Elsevier , 2020 , Article)
      Herbal medicine can improve economic diversification and sustainable livelihoods of local communities. In fact, the demand for herbal medicine is increasing globally while policymakers also value non-economic benefits, ...

    • Promotive Role of 5-Aminolevulinic Acid or Salicylic Acid Combined with Citric Acid on Sunflower Growth by Regulating Manganese Absorption 

      Li, Juanjuan; Pan, Jianmin; Najeeb, Ullah; El-Beltagi, Hossam S.; Huang, Qian; ... more authors ( MDPI , 2023 , Article)
      Manganese (Mn) is an essential nutrient in most organisms. Establishing an effective regulatory system of Mn absorption is important for sustainable crop development. In this study, we selected sunflower as the model plant ...

    • Propagation of Floquet-Bloch shear waves in viscoelastic composites: analysis and comparison of interface/interphase models for imperfect bonding 

      Andrianov, Igor V.; Danishevskyy, Vladyslav V.; Topol, Heiko; Rogerson, Graham A. ( Springer-Verlag Wien , 2017 , Article)
      The phononic band structure of waves, which travel though composites, results from the geometric and mechanical properties of the materials and from the interaction of the different constituents. In this article, we study ...

    • Propagation rate coefficient for sulfobetaine monomers by PLP-SEC 

      Lacík, Igor; Sobolčiak, Patrik; Stach, Marek; Chorvát, Dušan; Kasák, Peter ( Elsevier Ltd , 2016 , Article)
      Zwitterionic polymers have been extensively used in the biomedical field, however, the knowledge about the kinetics and mechanism of radical polymerization of their monomers is limited. This work introduces the first ...

    • Properties and thermo-switch behaviour of LDPE mixed with carbon black, zinc metal and paraffin wax 

      Motloung, T.B.; Dudic, D.; Mofokeng, J. P.; Luyt, A. S. ( Springer Verlag , 2017 , Article)
      This paper reports on the presence of wax and radiation-induced crosslinking on the morphology, thermal and mechanical properties, as well as electrical conductivity and thermo-switch properties of LDPE containing ...

    • Properties enhancement of Ni-P electrodeposited coatings by the incorporation of nanoscale Y 2 O 3 particles 

      Bahgat Radwan A.; Ali K.; Shakoor R.A.; Mohammed H.; Alsalama T.; ... more authors ( Elsevier B.V. , 2018 , Article)
      In this study the influence of nanoscale Y 2 O 3 particles on structural, morphological, mechanical and the elemental composition of Ni-P coatings have been investigated using scanning electron microscopy (SEM), microhardness, ...

    • Properties of electrodeposited Ni-B-ZrO2 composite coatings 

      Shakoor, R.A.; Kahraman, Ramazan; Waware, Umesh S.; Wang, Yuxin; Gao, Wei ( Electrochemical Science Group , 2015 , Article)
      Ni-B coatings have high hardness and high wear resistance which make them suitable for automotive, aerospace, petrochemical, textile and electronics industries. Further improvement in properties (especially the corrosion ...

    • Properties of microwave sintered al-cu metal matrix composites 

      Reddy, M. Penchal; Ubaid, F.; Shakoor, R. A.; Mohamed, A. M.A. ( Association for Iron and Steel Technology, AISTECH , 2016 , Conference Paper)
      The present work focuses on the effect of copper (Cu) reinforcement on structural and mechanical properties of Al-Cu composites synthesized through microwave sintering approach. The pure aluminum (Al) and copper (Cu) powders ...

    • Proportionally fair approach for tor's circuits scheduling 

      Basyoni L.; Erbad A.; Mohamed A.; Refaey A.; Guizani M. ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)
      The number of users adopting Tor to protect their online privacy is increasing rapidly. With a limited number of volunteered relays in the network, the number of clients' connections sharing the same relays is increasing ...

    • Prospective Role of Bioactive Molecules and Exosomes in the Therapeutic Potential of Camel Milk against Human Diseases: An Updated Perspective 

      Khan, Farheen Badrealam; Ansari, Mohammad Azam; Uddin, Shahab; Palakott, Abdul Rasheed; Anwar, Irfa; ... more authors ( MDPI , 2022 , Article Review)
      Camel milk (CM) constitutes an important dietary source in the hot and arid regions of the world. CM is a colloidal mixture of nutritional components (proteins, carbohydrates, lipids, vitamins, and minerals) and non-nutritional ...

    • Prospects for Alternative Energy in the Gulf 

      Bahgat, Gawdat G. ( Gulf Studies center - College of Arts & Sciences - Qatar University , 2019 , Conference Paper)
      The Middle East region holds the world's largest oil and natural gas proven reserves. Several Middle-Eastern states are major oil producers and consumers. Given price fluctuations and environmental concerns, many countries ...

    • Prospects for climate-scale regional numerical modelling for the Arabian Gulf and Qatar's marine region 

      Husrevoglu, Y. Sinan; Al-Ansari, Ebrahim S. ( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)
      Physical oceanographic studies at the Environmental Science Center (ESC) entail observational and numerical aspects. The main objective of observational studies is to build a reference time series for Qatar's marine exclusive ...

    • Prostate-specific antigen glycoprofiling as diagnostic and prognostic biomarker of prostate cancer 

      Tkac J.; Gajdosova V.; Hroncekova S.; Bertok T.; Hires M.; ... more authors ( Royal Society Publishing , 2019 , Article Review)
      The initial part of this review details the controversy behind the use of a serological level of prostate-specific antigen (PSA) for the diagnostics of prostate cancer (PCa). Novel biomarkers are in demand for PCa diagnostics, ...

    • "Protecting" or "policing": Academic researchers' view of IRBs in an arab context 

      Makhoul, Jihad; El-Alti, Leila; Qutteina, Yara; Nasrallah, Catherine; Sakr, Carol; ... more authors ( SAGE Publications Inc. , 2014 , Article)
      A recent surge of research universities and human subjects research funding in the Arab world raises concerns about applied research ethics and oversight. In-depth interviews conducted with 52 researchers in Lebanon and ...

    • Protection against Reinfection with the Omicron BA.2.75 Subvariant 

      Chemaitelly, Hiam; Tang, Patrick; Coyle, Peter; Yassine, Hadi M.; Al-Khatib, Hebah A.; ... more authors ( Massachusetts Medical Society , 2023 , Other)
      The BA.2.75 sublineage of the B.1.1.529 (omicron) variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) may escape neutralizing antibodies. The BA.2.75 sublineage (primarily the BA.2.75.2 subvariant) ...

    • Protection against the omicron variant from previous SARS-CoV-2 infection 

      Altarawneh, Heba N.; Chemaitelly, Hiam; Hasan, Mohammad R.; Ayoub, Houssein H.; Qassim, Suelen; ... more authors ( Massachusetts Medical Society , 2022 , Other)
      Natural infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) elicits strong protection against reinfection with the B.1.1.7 (alpha),1,2 B.1.351 (beta),1 and B.1.617.2 (delta)3 variants. However, the ...

    • Protection from previous natural infection compared with mRNA vaccination against SARS-CoV-2 infection and severe COVID-19 in Qatar: a retrospective cohort study 

      Hiam, Chemaitelly; Ayoub, Houssein H; AlMukdad, Sawsan; Coyle, Peter; Tang, Patrick; ... more authors ( Elsevier , 2022 , Article)
      BackgroundUnderstanding protection conferred by natural SARS-CoV-2 infection versus COVID-19 vaccination is important for informing vaccine mandate decisions. We compared protection conferred by natural infection versus ...

    • Protection of Omicron sub-lineage infection against reinfection with another Omicron sub-lineage 

      Chemaitelly, Hiam; Ayoub, Houssein H.; Coyle, Peter; Tang, Patrick; Yassine, Hadi M.; ... more authors ( Nature Research , 2022 , Article)
      There is significant genetic distance between SARS-CoV-2 Omicron (B.1.1.529) variant BA.1 and BA.2 sub-lineages. This study investigates immune protection of infection with one sub-lineage against reinfection with the other ...