Results 31 to 40 of about 4,722 (253)
Current Status of Ozone Control Measures in the United States and Europe and Implications for Japan
Asian Journal of Atmospheric Environment, 2022 In Japan, the achievement rate of environmental standards for air pollution has been improving in recent years, but for photochemical oxidants, including ozone, improvement are required.
Hideki Hasunuma +10 more
doaj +1 more source
Photochemistry of the Cloud Aqueous Phase: A Review
Molecules, 2020 This review paper describes briefly the cloud aqueous phase composition and deeply its reactivity in the dark and mainly under solar radiation. The role of the main oxidants (hydrogen peroxide, nitrate radical, and hydroxyl radical) is presented with a ...
Angelica Bianco +3 more
doaj +1 more source
Melanin, lipofuscin and the effects of visible light in the skin
Journal of Photochemistry and Photobiology, 2021 Photoexcitation of endogenous photosensitizers (ePS) in the human skin by sunlight culminates with the formation of electronic excited states, such as triplet excited states, singlet oxygen, and a variety of reactive oxygen and nitrogen species, either ...
Paulo Newton Tonolli +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Methane photocatalytic activation under mild conditions remains a formidable challenge in the synthesis of solar fuels. In this review, we emphasize the growing importance of multifunctional materials and hybrid systems within a unified mechanistic framework that integrates selective C─H bond activation, formation and control of intermediates, C─C ...
Di Hu +5 more
wiley +1 more source
Ecotoxicology and Environmental SafetyThe joint effect of air pollutants at relatively low levels requires further investigation. Here, a database study was performed to evaluate the effects of exposure to mixtures of air pollutants during pregnancy, infancy, and childhood on childhood ...
Akihiro Shiroshita +6 more
doaj +1 more source
Catalytically Enhanced Near Room‐Temperature Hydrogen Sensing Using Pd‐ZnO Colloidal Crystals
Advanced Functional Materials, EarlyView.Pd‐decorated ZnO colloidal crystal monolayers demonstrate excellent performance across a wide hydrogen concentration range at 33°C, with high selectivity and reproducible device fabrication. The sensors show strong responses even at low‐ppm H2 concentrations and an ultra‐low detection limit of 82 ppb, indicating their suitability for diverse hydrogen ...
Hamidah Alluhaybi +13 more
wiley +1 more source
Environmental AdvancesBackground: Although numerous studies have suggested short-term effects of air pollutants on acute asthma exacerbation, no study has yet specifically focused on children with persistent asthma, a particularly vulnerable population.
Akihiro Shiroshita +7 more
doaj +1 more source
Interaction‐Driven Assembly Pathways in Heterogeneous Active Microrobotic Systems
Advanced Functional Materials, EarlyView.Peanut‐ and cube‐shaped light‐powered microrobots exhibit distinct magnetic and photocatalytic responses that determine their heterogeneous self‐assembly. In the dark, magnetic dipole interactions drive colloidal copolymerization with cubes acting as nucleation centers, whereas under light irradiation, phoretic interactions compete with magnetic ...
Domenico Calabrò +5 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Molecular rotors are fluorescent molecules that are sensitive to viscosity and temperature variations in the environment. They exhibit a direct correlation between fluorescence and viscosity within Newtonian fluids. However, this correlation becomes less straightforward in complex systems.
Flavia Di Scala +6 more
wiley +1 more source
Meteorological Applications, 2021 The lockdown period (March–May 2020) during the COVID‐19 pandemic in Europe led to a reduction in the anthropogenic emissions of primary pollutants.
Adrien Deroubaix +6 more
doaj +1 more source