Now showing items 4167-4186 of 48073

    • Calix[4]arene-clicked clay through thiol-yne addition for the molecular recognition and removal of Cd(II) from wastewater 

      Jlassi, Khouloud; Eid, Kamel; Sliem, Mostafa H.; Abdullah, Aboubakr M.; Chehimi, Mohamed M. ( Elsevier B.V. , 2020 , Article)
      A novel type of hybrid Clay/Calix[4]arene (denoted as B-S-Calix), was prepared through fast photo-induced radical-mediated thiol–yne addition between a thiolated clay and an alkynylated calix[4]arene. The photo-induced ...
    • Call for emergency action to restore dietary diversity and protect global food systems in times of COVID-19 and beyond: Results from a cross-sectional study in 38 countries 

      Hoteit, Maha; Hoteit, Reem; Aljawaldeh, Ayoub; Van Royen, Kathleen; Pabian, Sara; ... more authors ( Elsevier , 2023 , Article)
      Background The COVID-19 pandemic has revealed the fragility of the global food system, sending shockwaves across countries' societies and economy. This has presented formidable challenges to sustaining a healthy and ...
    • A Call to Action to Transform Pharmacy Education and Practice in the Arab World. 

      Chahine, Elias B; Alkhateeb, Fadi M ( Aacp American Association of Colleges , 2019 , Other)
      Al-Ghananeem and colleagues recently evaluated health care and pharmacy education in some countries of the Arab world focusing on clinical pharmacy education and practice. They identified six key strategies to meet the ...
    • Calmodulin Interacts and Regulates Enzyme Activity of the Mammalian Sperm Phospholipase C 

      Nomikos, Michail; Thanassoulas, Angelos; L. Calver, Brian; Theodoridou, Maria; Buntwal, Luke; ... more authors ( Elsevier , 2017 , Article)
      Sperm-specific Phospholipase C zeta (PLCζ) is widely considered to be the sole, physiological stimulus responsible for the generation of Ca2+ oscillations that induce egg activation and early embryo development during ...
    • Calmodulin Mutations Associated with Congenital Cardiac Disease Display Novel Biophysical and Biochemical Characteristics 

      Nomikos, Michail; Thanassoulas, Angelos; L. Calver, Brian; Beck, Konrad; Vassilakopoulou, Vyronia; ... more authors ( Elsevier , 2018 , Article)
      Calmodulin (CaM) is a cytoplasmic multifunctional calcium (Ca2+)-binding messenger that interacts with the cardiac ryanodine receptor (RyR2), a large transmembrane Ca2+ channel that mediates Ca2+ release from the sarcoplasmic ...
    • Caloric expenditure estimation for health games 

      Erbad, Aiman ( Hamad bin Khalifa University Press (HBKU Press) , 2013 , Conference Paper)
      With the decline in physical activities among young people, it is essential to monitor their physical activity and ensure their calorie expenditure is within the range necessary to lead a healthy life style. For many ...
    • Calorimetric analysis and molecular dynamics simulation of cure kinetics of epoxy/chitosan-modified Fe3O4 nanocomposites 

      Saeb, Mohammad Reza; Nonahal, Milad; Rastin, Hadi; Shabanian, Meisam; Ghaffari, Mehdi; ... more authors ( Elsevier B.V. , 2017 , Article)
      Fe3O4 magnetic nanoparticles (MNPs) were synthesized and modified with chitosan as a natural surface modifier to prevent their aggregation and make them potent to contribute to ring opening of epoxy. Functionalized Fe3O4 ...
    • Calorimetric and dynamic mechanical behavior of phase change materials based on paraffin wax supported by expanded graphite 

      Sobolciak, Patrik; Mrlik, Miroslav; Almaadeed, Mariam A.; Krupa, Igor ( Elsevier , 2015 , Article)
      This study addressed the characterization and description of calorimetric and dynamic mechanical properties of phase change materials (PCMs) based on linear low-density polyethylene (LLDPE), paraffin wax (W) and expanded ...
    • Calreticulin regulates Src kinase in osteogenic differentiation from embryonic stem cells 

      Zahra, Alvandi; Al-Mansoori, Layla J.R; Opas, Michal ( Elsevier , 2020 , Article)
      Calreticulin, the major Ca2+ buffer of the endoplasmic reticulum plays an important role in the choice of fate by embryonic stem cells. Using the embryoid body method of organogenesis, we showed impaired osteogenesis in ...
    • Cambio y estabilidad política en las monarquías del Golfo tras la Primavera Árabe 

      Zaccara, Luciano; Saldana, Marta ( CIDOB BARCELONA CENTRE FOR INTERNATIONAL AFFAIRS , 2015 , Article)
      The states of the Gulf Cooperation Council (GCC), aided by their rentier nature, have survived as authoritarian regimes until now. Nevertheless, the desire of significant sectors of society for political liberalisation was ...
    • Camel, blockade and a historical memory perspective: a theme of historical memory portrayed at Qatar National Museum 

      AL-HAMMADI, M.; EXELL, K.; EL-MENSHAWY, S. ( Alexandru Ioan Cuza - University of Iasi , 2020 , Article)
      Camels from ancient times as early as 1200 BC were used as military vehicle and have been associated with the Near East and the Arabian Peninsula. In modern times they remain an important element of Bedouin life and culture ...
    • CamNav: a computer-vision indoor navigation system 

      Karkar A.G.; Al-Maadeed, Somaya; Kunhoth J.; Bouridane A. ( Springer , 2021 , Article)
      We present CamNav, a vision-based navigation system that provides users with indoor navigation services. CamNav captures images in real time while the user is walking to recognize their current location. It does not require ...
    • CAMP induces adhesion of microvascular smooth muscle cells to fibronectin via an epac-mediated but PKA-independent mechanism 

      Eid, Ali H. ( Cell Physiol Biochem Press , 2012 , Article)
      Background/Aims: Vascular smooth muscle cells (VSMCs) play important roles, both in physiologic and pathophysiologic processes. Adhesion of these cells is critical for their proper functioning, especially in resistance-sized ...
    • Campus day 2011 

      ( Qatar University , 2011 , Video)