Browsing Research Units by Title
Now showing items 638-657 of 4987
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Changements climatiques et essor djihadiste au Sahel: une approche critique pour des solutions plus adaptées
( GQEG , 2018 , Article)Les pays du Lac Tchad et la communauté internationale ont privilégié depuis plusieurs années la résolution des problèmes complexes du Sahel (tels que le terrorisme, la pauvreté extrême et la dégradation environnementale) ... -
Changes in air quality during the first-level response to the COVID-19 pandemic in Shanghai Municipality, China
( MDPI , 2020 , Article)Ongoing rapid urban population growth world-wide has led to serious environmental problems that affect ecosystems and also lower the security and happiness of urban residents about their living environment. The most ... -
Changes in Driving Behavior Across Age Cohorts in an Arab Culture: The Case of State of Qatar
( Elsevier B.V. , 2018 , Conference Paper)In this investigation, we aimed to examine the structure of the Driving Behavior Questionnaire (DBQ) across age cohorts spanning 14 to 55 years in the State of Qatar. In addition, we aimed to examine variations in driving ... -
Changes in plant composition and diversity in an alpine heath and meadow after 18 years of experimental warming
( Springer , 2021 , Article)Global warming is expected to have large impacts on high alpine and Arctic ecosystems in the future. Here we report effects of 18 years of experimental warming on two contrasting high alpine plant communities in subarctic ... -
Changes in resting-state functional brain activity are associated with waning cognitive functions in HIV-infected children.
( Elsevier , 2018 , Article)Delayed brain development in perinatally HIV-infected children may affect the functional brain activity and subsequently cognitive function. The current study evaluated the functional brain activity in HIV-infected children ... -
Changes in secondary metabolites contents and stress response in Salvia miltiorrhiza Bunge via ScWRKY35 overexpression: insights from a Salvia castanea homolog
( Elsevier , 2024 , Article)Salvia castanea Diels, a close wild relative to the medicinal plant, Salvia miltiorrhiza Bunge, primarily grows in high-altitude regions. While the two species share similar active compounds, their content varies significantly. ... -
Changes in the white–black house value distribution gap from 1997 to 2005
( Elsevier , 2012 , Article)This paper examines the white–black house value gap across the entire value distribution. Instead of using standard conditional mean analysis and decomposition methods (via OLS regression), we estimate and decompose the ... -
Changing Paradigm in The Global LNG Market: Opportunities And Risks For Major Suppliers in The Gulf Region
( Gulf Studies center - College of Arts & Sciences - Qatar University , 2019 , Conference Paper)Beginning from early this decade, global LNG market is going through dramatic changes. The market is increasingly becoming oversupplied and competitive by new large volumes from Australia, USA and Russia. At the same ... -
Chapter 1 - Overview: Clay Preparation, Properties, Modification
( Matthew Deans , 2017 , Book chapter)This chapter reviews clay physicochemical properties and general methods of modification with a view to making a clay–polymer nanocomposite. The first part includes an overview of clays, their different structures, and ... -
CHAPTER 12: Hybrid Nano-filler for Value Added Rubber Compounds for Recycling
( Royal Society of Chemistry , 2019 , Book chapter)The generation of waste and its treatment is a challenging problem nowadays. Rubber that is generally considered for recycling comes from the tyres of vehicles. After their use, the waste tyres can lead to hazardous effects ... -
CHAPTER 1: Recent Advances in the Controlled Design of One-dimensional Carbon Nitrides for Thermal CO Oxidation Reaction
( Royal Society of Chemistry , 2021 , Book chapter)Graphitic carbon nitrides (gCNs) are promising materials for multidisciplinary catalytic applications due to their inimitable physicochemical merits, thermal-physical-chemical stability, and rich electron density. The ... -
CHAPTER 3: Template-based Fabrication of Porous Carbon Nitride Nanostructures for Electrochemical Energy Conversion
( Royal Society of Chemistry , 2021 , Book chapter)With the ever-increasing energy demand and severe energy crisis, the search for highly efficient energy storage and conversion devices becomes more and more crucial. Among the options available, fuel cells, water electrolysis, ... -
CHAPTER 6: Atomic and Molecular Functionalization of Graphitic Carbon Nitride for Solar Cell Applications
( Royal Society of Chemistry , 2021 , Book chapter)Graphitic carbon nitride (g-C3N4) nanomaterials have attracted great attention in various energy and environmental applications owning to their unique physical and chemical properties. The utilization of gCNs in solar-driven ... -
CHAPTER 7: Metal Oxide-based Disposable Sensors for Health Monitoring
( Royal Society of Chemistry , 2021 , Book chapter)Metal oxides and their use as disposable sensors in food, environment, and particularly health monitoring have been addressed over recent decades due to their low-cost, ease of use, high sensitivity, fast response and ... -
CHAPTER 9: Combination of Carbon Nitride and Semiconductors for the Enhancement of the Photocatalytic Degradation of Organic Pollutants and Hydrogen Production
( Royal Society of Chemistry , 2021 , Book chapter)This chapter summarizes the utilization of promoted graphitic carbon nitride (gCN) semiconductors in photocatalytic hydrogen generation and photocatalytic environmental remediation. This includes the methods of tailoring, ... -
Characteristics and renewal of zooplankton communities under extreme environmental stresses in the oligotrophic hypersaline Arabian Gulf
( Elsevier , 2022 , Article)Impacts of the exceptionally high temperature and salinity on species composition, abundance, biomass and diversity of zooplankton communities were examined in the central Arabian (Persian) Gulf in late winter and summer ... -
Characteristics and sources of anthropogenic and biogenic hydrocarbons in sediments from the coast of Qatar.
( Elsevier , 2017 , Article)Surface sediment samples from the coastal zone of Qatar were collected and analyzed to determine the characteristics, and sources of anthropogenic and biogenic hydrocarbons. The main compounds in these surface sediments ... -
Characteristics of Desalination Brine and Its Impacts on Marine Chemistry and Health, With Emphasis on the Persian/Arabian Gulf: A Review
( Frontiers Media , 2022 , Article Review)At a time when worldwide water shortage is increasing, seawater is being viewed as an inexhaustible supply of freshwater via the process of seawater desalination. As a result, seawater desalination is becoming more popular, ... -
Characteristics of historical precipitation for winter wheat cropping in the semi-arid and semi-humid area
( Frontiers Media , 2023 , Article)Winter wheat (Triticum aestivum L.) is one of major crops in the area along Huai river, China where it is a semi-arid and semi-humid region with sufficient precipitation for an entire season, but with uneven distribution ... -
Characterization and source identification of PM2.5 during intense haze episodes in an urban environment of Lahore
( Elsevier , 2024 , Article)In the backdrop of persistent haze occurrences affecting Southeast Asia and Pakistan's environmental landscape, this study delves into an in-depth analysis of atmospheric Particulate Matter (PM2.5) during intense haze ...