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  Mental health of university students: a cross-sectional study from Qatar 

  Al-Jayyousi, Ghadir Fakhri; Shraim, Mujahed; O’Hara, Lily; Zolezzi, Monica; Al-Wattary, Noor; El-Awaisi, Alla; El Hajj, Maguy Saffouh; Mukhalalati, Banan; Abdul Rahim, Hanan; Alsayed Hassan, Diana... more authors ... less authors ( Nature Research , 2025 , Article)

  This study explored the prevalence, associated factors, and management strategies related to mental health among university students in Qatar. A cross-sectional survey was conducted among students aged 18 and older. Data ...
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  Effectiveness and durability of a fourth dose of ancestral-strain mRNA vaccines against SARS-CoV-2 infection: a nationwide matched cohort study in Qatar 

  Sukik, Layan; Chemaitelly, Hiam; Ayoub, Houssein H.; Coyle, Peter; Tang, Patrick; Hasan, Mohammad R.; Yassine, Hadi M.; Al Thani, Asmaa A.; Al-Kanaani, Zaina; Al-Kuwari, Einas; Jeremijenko, Andrew; Kaleeckal, Anvar Hassan; Latif, Ali Nizar; Shaik, Riyazuddin Mohammad; Abdul-Rahim, Hanan F.; Nasrallah, Gheyath K.; Al-Kuwari, Mohamed Ghaith; Butt, Adeel A.; Al-Romaihi, Hamad Eid; Al-Thani, Mohamed H.; Al-Khal, Abdullatif; Abu-Raddad, Laith J.... more authors ... less authors ( Nature Research , 2025 , Article)

  Concerns about waning immunity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and the emergence of new variants underscore the need for booster doses. Using a matched cohort design, this ...
• Valuation of commodity option prices under a regime-switching model with stochastic convenience yield: Model calibration using flower pollination optimization algorithm 

  Hamdi, A.; Aksikas, I.; Smaoui, H.; Mehrdoust, F.; Noorani, I. ( Elsevier , 2026 , Article)

  This research work seeks to construct a model for commodity spot prices by incorporating the concept of stochastic convenience yield within a Markov-switching framework. The model presented in this paper applies the ...
• Estimating SARS-CoV-2 infection incidence and detection rates: Demonstrating a novel surveillance method 

  Ayoub, Houssein H.; Chemaitelly, Hiam; Tang, Patrick; Hasan, Mohammad R.; Yassine, Hadi M.; Al Thani, Asmaa A.; Coyle, Peter; Al-Kanaani, Zaina; Al-Kuwari, Einas; Kaleeckal, Anvar Hassan; Latif, Ali Nizar; Abdul-Rahim, Hanan F.; Nasrallah, Gheyath K.; Al-Kuwari, Mohamed Ghaith; Butt, Adeel A.; Al-Romaihi, Hamad Eid; Al-Thani, Mohamed H.; Al-Khal, Abdullatif; Bertollini, Roberto; Abu-Raddad, Laith J.... more authors ... less authors ( Elsevier , 2025 , Article)

  ObjectivesAssessing the cumulative incidence of infection conventionally relies on documented infections or serological surveys, both of which have limitations. This study introduces a novel and practical method leveraging ...
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  Effectiveness of ChAdOx1 nCoV-19 (Vaxzevria) primary series vaccine against SARS-CoV-2 beta and delta variants: a nationwide study 

  Chemaitelly, Hiam; Ayoub, Houssein H.; Coyle, Peter; Tang, Patrick; Hasan, Mohammad R.; Yassine, Hadi M.; Al Thani, Asmaa A.; Al-Kanaani, Zaina; Al-Kuwari, Einas; Jeremijenko, Andrew; Kaleeckal, Anvar Hassan; Latif, Ali Nizar; Shaik, Riyazuddin Mohammad; Abdul-Rahim, Hanan F.; Nasrallah, Gheyath K.; Al-Kuwari, Mohamed Ghaith; Butt, Adeel A.; Al-Romaihi, Hamad Eid; Al-Thani, Mohamed H.; Al-Khal, Abdullatif; Bertollini, Roberto; Abu-Raddad, Laith J.... more authors ... less authors ( Springer Nature , 2025 , Article)

  Background: This study assessed the real-world effectiveness of the ChAdOx1 nCoV-19 vaccine in adults against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, symptomatic infection, and severe ...
• Chemistry and Electrochemistry | Lithium 

  Qureshi, Zawar Alam; Elmakki, Tasneem; Abraham, Jeffin James; Tariq, Hanan Abdurehman; Moossa, Buzaina; Al-Sulaiti, Leena; Han, Dong Suk; Abdul Shakoor, Rana... more authors ... less authors ( Elsevier , 2025 , Book chapter)

  Lithium is a chemical element that heads the alkali group of metals with the chemical symbol Li and an atomic number of 3. It is a soft, lustrous, white-silverish metal that has the lowest density of all metals or solids. ...
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  Assessing healthy vaccinee effect in COVID-19 vaccine effectiveness studies: a national cohort study in Qatar. 

  Chemaitelly, Hiam; Ayoub, Houssein H; Coyle, Peter; Tang, Patrick; Hasan, Mohammad R; Yassine, Hadi M; Al Thani, Asmaa A; Al-Kanaani, Zaina; Al-Kuwari, Einas; Jeremijenko, Andrew; Kaleeckal, Anvar Hassan; Latif, Ali Nizar; Shaik, Riyazuddin Mohammad; Abdul-Rahim, Hanan F; Nasrallah, Gheyath K; Al-Kuwari, Mohamed Ghaith; Al-Romaihi, Hamad Eid; Al-Thani, Mohamed H; Al-Khal, Abdullatif; Bertollini, Roberto; Butt, Adeel A; Abu-Raddad, Laith J... more authors ... less authors ( National Center for Biotechnology Information , 2025 , Article)

  This study investigated the presence of the healthy vaccinee effect-the imbalance in health status between vaccinated and unvaccinated individuals-in two rigorously conducted COVID-19 vaccine effectiveness studies involving ...
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  Experimental Investigation of Pedestrians Interacting with E-Scooter Riders on Residential Roads 

  Hussain, Zahid; Dias, Charitha; Samson, Christian; Hussain, Qinaat; Alhajyaseen, Wael; Abbasi, Saddam Akber; Hussain, Iqtadar... more authors ... less authors ( Elsevier , 2024 , Conference)

  The integration of e-scooters in urban environments particularly on residential sidewalks has raised significant concerns about pedestrian safety and comfort. Therefore, it is crucial to understand pedestrian behaviour ...
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  Modeling chronic pain interconnections using Bayesian networks: insights from the Qatar Biobank study 

  Al-Khinji, Aisha Ahmad M.A.; Malouche, Dhafer ( Frontiers , 2025 , Article)

  Introduction: This study examines the interdependencies among different chronic pain locations and their relationships with age and gender, critical for effective clinical strategies. Methods: A Bayesian network approach ...
• In Silico Band-Gap Engineering of Cr2C MXenes as Efficient Photocatalysts for Water-Splitting Reactions 

  Ibrahim, Ismail A.M.; Abdel-Azeim, Safwat; El-Nahas, Ahmed Mahmoud; Kühn, Oliver; Chung, Chanyeup; El-Zatahry, Ahmed; Shibl, Mohamed F.... more authors ... less authors ( American Chemical Society , 2022 , Article)

  Hydrogen is a significantly advantageous clean and sustainable energy carrier over other energy sources. Therefore, hydrogen production using water-splitting technology is a promising strategy as a clean source of energy. ...
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  Structural, Electronic, Optical, and potassium anodic electrochemical characteristics of 2-Dimensional Silicane: A density functional theory investigation 

  Peng, Qiong; Rehman, Javed; Aziz, Saadullah G.; Laref, Amel; Albaqami, Munirah D.; Ghazi Alotabi, Reham; Elzatahry, Ahmed; An Dinh, Van; Shibl, Mohamed F.... more authors ... less authors ( Elsevier , 2023 , Article)

  Two-dimensional (2D) graphene-like materials have attracted tremendous interest due to their remarkable properties in nanoelectronics. To understand and characterize the various physical properties of silicane relevant to ...
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  Immune histories and natural infection protection during the omicron era 

  Chemaitelly, H. S.; Ayoub, Houssein H.; Bobrovitz, Niklas Jh; Coyle, Peter Valentine; Tang, Patrick K.C.; Hasan, Mohammad Rubayet; Yassine, Hadi M.; Al Thani, Asmaa A.; Al-Kanaani, Zaina; Al-Kuwari, Einas A.Aziz Eid... more authors ... less authors ( Springer Nature , 2025 , Article)

  Background: Past immunological events can either enhance or compromise an individual's future immune protection. This study investigated how different severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) natural ...
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  Measuring students' AI competence: Development and validation of a multidimensional scale integrating educational psychology perspectives 

  Ahmad, Zubair; Sultana, Almaas; Latheef, Nafilah Abdul; Siby, Nitha; Sellami, Abdellatif; Abbasi, Saddam Akber... more authors ... less authors ( Elsevier , 2025 , Article)

  The rapid integration of Artificial Intelligence (AI) into K-12 education has created a pressing need to evaluate students' capacity to engage with AI effectively and responsibly. As outlined in UNESCO's AI Competency ...
• Comparative effectiveness of one versus two doses of COVID-19 vaccines in Qatar: Evidence of converging protection over time 

  Hiam, Chemaitelly; Ayoub, Houssein H.; Coyle, Peter; Tang, Patrick; Hasan, Mohammad R.; Yassine, Hadi M.; Al Thani, Asmaa A.; Al-Kanaani, Zaina; Al-Kuwari, Einas; Jeremijenko, Andrew; Kaleeckal, Anvar Hassan; Latif, Ali Nizar; Shaik, Riyazuddin Mohammad; Abdul-Rahim, Hanan F.; Nasrallah, Gheyath K.; Al-Kuwari, Mohamed Ghaith; Butt, Adeel A.; Al-Romaihi, Hamad Eid; Al-Thani, Mohamed H.; Al-Khal, Abdullatif; Abu-Raddad, Laith J.... more authors ... less authors ( Elsevier , 2025 , Article)

  BackgroundSupply constraints during the coronavirus disease 2019 (COVID-19) pandemic led to vaccination strategies that prioritized first-dose coverage. To evaluate the merit of this approach, this study compared the ...
• Model Order Reduction for System with Negative Imaginary property: Structure-Preserving Approach 

  Mabrok, Mohamed A.; Meskin, Nader; Khattab, Tamer ( Institute of Electrical and Electronics Engineers (IEEE) , 2025 , Conference)

  Model order reduction (MOR) is a set of methods used to simplify the analysis and design of complex dynamical systems by reducing their size and complexity. However, these techniques often struggle to maintain important ...
• Investigation of the photo-Fenton efficiency and dielectric properties of BiVO4/α-Fe2O3 nanocomposites 

  Rajkumar, Saidurga; Perumalsamy, Sundara Venkatesh; Kulandaivel, Jeganathan; Paramasivam, Thangadurai; Krishnan, Jayanthi Santhana; Ponnamma, Deepalekshmi... more authors ... less authors ( Springer Science and Business Media Deutschland GmbH , 2025 , Article)

  This study focuses on successfully synthesizing BiVO4 nanoparticles (NPs), α-Fe2O3 NPs, and their nanocomposites (NCs) using the facile hydrothermal method to degrade methylene blue (MB) dye molecules and fabricate flexible ...
• Exploration of photocatalytic dye degradation and non-linear optical absorption of BiVO4-TiO2 nanocomposites 

  Rajkumar, Saidurga; Perumalsamy, Sundara Venkatesh; Chidambaram, Sabari Girisun T.; Kulandaivel, Jeganathan; Paramasivam, Thangadurai; Ponnamma, Deepalekshmi... more authors ... less authors ( Springer , 2024 , Article)

  In this study, a simple hydrothermal approach was utilized to synthesize BiVO4 nanoparticles (NPs), TiO2 NPs, and BiVO4–TiO2 nanocomposites for the applications in degrading Rhodamine—B dye molecules and exploring optical ...
• A versatile route for the fabrication of micro-patterned polylactic-acid (PLA)-based membranes with tailored morphology via breath figure imprinting 

  Akoumeh, Rayane; Noun, Manale; Ponnamma, Deepalekshmi; Al-Ejji, Maryam; Zadeh, Khadija M.; Hawari, Alaa H.; Song, Kenan; Hassan, Mohammad K.... more authors ... less authors ( Royal Society of Chemistry , 2024 , Article)

  Breath figure imprinting, based on surface instabilities combined with fast polymer evaporation in a humid environment, enables the creation of micro-patterned membranes with tailored pore sizes. Despite being a simple ...
• MoS2-Based Hybrid Piezoelectric Materials 

  Ebrahim, Sahal; Ponnamma, Deepalekshmi ( wiley , 2024 , Book chapter)

  The utilization of renewable energy is the primary focus of the scientific world today. However, the large initial cost, space requirements, and low technological upgrades fade its merits, and lead to difficulty in its ...
• Piezoelectric Properties of Biopolymers 

  Divya, R.; Yempally, Swathi; Ponnamma, Deepalekshmi ( Springer Nature , 2023 , Book chapter)

  Biopolymers with piezoelectric properties are widely attractive nowadays owing to their direct and indirect effects of piezoelectric behavior in addition to biocompatibility and biodegradability. Although a wide range of ...

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