Browsing Research Units by Title

Now showing items 480-499 of 4561

    • Blue luminescent cyanopyridone based molecular architectures: A structure-property study 

      Trupthi Devaiah C.; Hemavathi B.; Ros M.B.; Barber? J.; Tejedor R.M.; ... more authors ( Elsevier B.V. , 2018 , Article)
      A new class of molecular architecture made of five conjugated rings carrying terminal methyl or variable alkoxy (chain lengths of 4, 6, 8, or 16) substituted at para positions has been synthesized. Among the five rings, ...

    • BNT162b2 and mRNA-1273 COVID-19 vaccine effectiveness against the SARS-CoV-2 Delta variant in Qatar. 

      Tang, Patrick; Hasan, Mohammad R; Chemaitelly, Hiam; Yassine, Hadi M; Benslimane, Fatiha M; ... more authors ( Nature Researc , 2021 , Article)
      With the global expansion of the highly transmissible SARS-CoV-2 Delta (B.1.617.2) variant, we conducted a matched test-negative case-control study to assess the real-world effectiveness of COVID-19 messenger RNA vaccines ...

    • BNT162b2 antigen dose and SARS-CoV-2 omicron infection in adolescents 

      Chemaitelly, Hiam; Ayoub, Houssein H.; Coyle, Peter; Tang, Patrick; Yassine, Hadi M.; ... more authors ( Elsevier , 2023 , Other)
      COVID-19 vaccine antigen dose might affect protection against SARS-CoV-2 infection,1, 2 but direct evidence to quantify this effect is absent. We conducted a matched, retrospective, cohort study using a regression ...

    • Book Launch China's Economic and Political Presence in the Middle East and South Asia 

      Haghirian, Mehran; Zaccara, Luciano; Ehteshami, Anoush; Mohseni, Amin; Scita, Jacopo; ... more authors ( مركز ابن خلدون للعلوم الإنسانية والاجتماعية - جامعة قطر , 2022 , Video)
      This book explores a range of key issues connected to China’s relations with countries in the Middle East and South Asia. It discusses economic and political connections, and projects which have arisen as part of China’s ...

    • Box-Behnken approach for optimization of Cr(III) removal from a real tanning effluent using powdered marble 

      Boujelben, R.; Ellouze, M.; Aziz, F.; Ouazzani, N.; Sayadi, S. ( Springer Science and Business Media Deutschland GmbH , 2022 , Article)
      During the tanning step, 30-40% of trivalent chromium remains in the solid and liquid wastes, generating highly polluted sewage. In this study, powdered marble was used as a low-cost adsorbent to remove trivalent chromium ...

    • The Brain And Exercise: In Sickness And In Health 

      Reslan, Mohammad Amine; Tabet, Maha; Yehya, Yara; Shaito, Abdullah; Kobeissy, Firas ( Frontiers Media , 2022 , Article)
      The brain, like any other organ in the body, is made up of various types of cells. Nerve cells called neurons are the major cells in the brain. Their main function is to transfer messages and orders to and from the organs ...

    • Brain microstructural changes support cognitive deficits in HIV uninfected children born to HIV infected mothers 

      Santosh K., Yadav; Gupta, Rakesh K.; Hashem, Sheema; Nisar, Sabah; Azeem, Taha; ... more authors ( Elsevier , 2020 , Article)
      IntroductionAntiretroviral therapy (ART) is considered the most effective way to prevent perinatal transmission of human immunodeficiency virus (HIV). However, there is little knowledge about the effect of ART on the brain ...

    • Brain Microstructural Changes Support Cognitive Deficits in Normal Children Born to HIVinfected Mothers 

      Santosh Kumar Yadav, Rakesh K Gupta , Sabah N Ahmed , Sheema Hashem , Ajaz A Bhat , Ravindra K Garg , Vimala Venkatesh , Muhammad W Azeem , and Mohammad Haris.; Yadav, Santosh Kumar; Gupta, Rakesh K; Ahmed, Sabah N; Hashem, Sheema; ... more authors (2018 , Conference Proceedings)
      Synopsis In the current study, we evaluated the brain integrity [by mapping the fractional anisotropy (FA) and mean diffusivity (MD)] and neurocognitive performance (NP) in normal children (NCI) born to HIV-infected ...

    • Breaking down the export barriers for small and medium-sized enterprises: Focus group study across Vietnam 

      Saleh, Ali Salman; Donovan, Jerome; Le, Viet; Safari, Arsalan ( Inderscience Enterprises Ltd. , 2021 , Article)
      This paper attempts to empirically analyse the motivations and barriers among Vietnamese businesses in undertaking export activities. The study applies thematic analysis method and categorisations developed from extant ...

    • Breast Cancer During Pregnancy: A Marked Propensity to Triple-Negative Phenotype. 

      Allouch, Soumaya; Gupta, Ishita; Malik, Shaza; Al Farsi, Halema F; Vranic, Semir; ... more authors ( Frontiers Media , 2020 , Article)
      Breast and cervical cancers comprise 50% of all cancers during pregnancy. In particular, gestational breast cancer is considered one of the most aggressive types of cancers, which is a rare but fatal disease. However, the ...

    • Breath Analysis for the in Vivo Detection of Diabetic Ketoacidosis 

      Shabil Sha, Mizaj; Maurya, Muni Raj; Shafath, Sadiyah; Cabibihan, John-John; Al-Ali, Abdulaziz; ... more authors ( American Chemical Society , 2022 , Article)
      Human breath analysis of volatile organic compounds has gained significant attention recently because of its rapid and noninvasive potential to detect various metabolic diseases. The detection of ketones in the breath and ...

    • Bridging a gulf between environmental attitudes and behavior: Assessment of motivating factors for the youth in Qatar 

      Al-Ali Mustafa, Semsia ( HBKU Press , 2016 , Conference Paper)
      To this day, there is a dearth of published research on environmental awareness, attitudes and behaviour in the Arabian Gulf, and there is no systematic data regarding the value people place on the environment. Understanding ...

    • Bridging Disciplines and History: A Case Study of Interdisciplinary Problem-Solving in Moroccan Cybersecurity Engineering Education 

      Skifa, Hajar ( Qatar University Young Scientists Center - Qatar University , 2024 , Conference Paper)
      This article outlines a case study conducted within the Moroccan cybersecurity engineering program at ENSA engineering school, aiming to demonstrate the integration of interdisciplinary problem-solving, principles of social ...

    • Bridging the Ages: Muslim Innovations and the Resurrection of Europe 

      Namos, Aisha Al Kuwari, Bothaina ( Qatar University Young Scientists Center - Qatar University , 2024 , Conference Paper)
      This paper challenges the conventional Western narrative of Europe as the sole civilizing force, proposing an alternative perspective that credits Muslim innovations with the modernization and civilization of Europe. The ...

    • Bridging the Energy-Water Gap in Qatar 

      Aroussi, Abdelwaha ( Hamad bin Khalifa University Press (HBKU Press) , 2012 , Conference Paper)
      Industrial development and demographic growth come at a cost to the climate, not least on its impact on the water resources. The high demand on water usage and the associated production of wastewater requires stringent ...

    • Bringing Coordination Languages Back to the Future Using Blockchain Smart Contracts 

      Hammoudeh, Mohammad; Adebisi, Bamidele; Unal, Devrim; Laouid, Abdelkader ( Association for Computing Machinery , 2021 , Conference Paper)
      This paper presents a blockchain extension of the run-time Sensing as a Service SOA (3SOA) approach presented in [5]. 3SOA defines a practical approach for implementing service-oriented Internet of Things (IoT) using ...

    • Broadening microwave absorption via a multi-domain structure 

      Liu, Zhengwang; Che, Renchao; Wei, Yong; Liu, Yupu; Elzatahry, Ahmed A.; ... more authors ( American Institute of Physics Inc. , 2017 , Article)
      Materials with a high saturation magnetization have gained increasing attention in the field of microwave absorption; therefore, the magnetization value depends on the magnetic configuration inside them. However, the ...

    • Bryophyte cover and richness decline after 18 years of experimental warming in alpine Sweden. 

      Alatalo, Juha M; Jägerbrand, Annika K; Erfanian, Mohammad Bagher; Chen, Shengbin; Sun, Shou-Qin; ... more authors ( Oxford University Press , 2020 , Article)
      Climate change is expected to affect alpine and Arctic tundra communities. Most previous long-term studies have focused on impacts on vascular plants, this study examined impacts of long-term warming on bryophyte communities. ...

    • BTEX, nitrogen oxides, ammonia and ozone concentrations at traffic influenced and background urban sites in an arid environment 

      Alfoldy, B.; Mahfouz, M.M.K.; Yigiterhan, O.; Safi, M.A.; Elnaiem, A.E.; ... more authors ( Elsevier , 2019 , Article)
      Spatial distribution of key air pollutants were studied in Doha, Qatar, over the course of two monitoring campaigns in early spring, 2016. Time-weighted averages of BTEX components (benzene, toluene, ethyl-benzene, ...

    • Building a Lasting Legacy: Beyond Qatar 2022 

      Azzali, Simona ( Gulf Studies center - College of Arts & Sciences - Qatar University , 2022 , Conference Paper)
      Doha, the capital city of Qatar, was a tiny, sleepy urban settlement with an economy based on fishing and pearling until the 1970s, when the discovery of oil and natural gas triggered unprecedented and rapid urbanization. ...