Results 51 to 60 of about 3,053,596 (287)

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

open access: yesAdvanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali   +16 more
wiley   +1 more source

Solar Eruptive Phenomena Associated with Solar Energetic Electron Spectral Types

open access: yesThe Astrophysical Journal
The energy spectral shape of solar energetic electron events carries important information on the energetic electron source/acceleration at the Sun. We investigate the association of six newly identified solar energetic electron spectral types with solar
Wen Wang   +5 more
doaj   +1 more source

On realistic size equivalence and shape of spheroidal Saharan mineral dust particles applied in solar and thermal radiative transfer calculations [PDF]

open access: yesAtmospheric Chemistry and Physics, 2011
Realistic size equivalence and shape of Saharan mineral dust particles are derived from in-situ particle, lidar and sun photometer measurements during SAMUM-1 in Morocco (19 May 2006), dealing with measured size- and altitude-resolved axis ratio ...
S. Otto, T. Trautmann, M. Wendisch
doaj   +1 more source

Desert Plant Inspired Hierarchical Nanofibrous Membranes for Integrated Solar Desalination and Heavy Metal Remediation

open access: yesAdvanced Functional Materials, EarlyView.
An Alhagi maurorum inspired hierarchical composite membrane (NFCu) was developed by integrating heavy metal remediation and solar‐driven interfacial evaporation in a single platform. Beyond the photothermal effect, a localized photocatalytic process is realized on the CuO surface, deepening the mechanistic understanding of light–matter–water ...
Yuqiong He   +9 more
wiley   +1 more source

Increasing Coarse Aerosols Mitigated the Warming Effect of Anthropogenic Fine Particle Reductions in Europe

open access: yesEarth's Future
Recent decades have seen substantial variations in the physicochemical characteristics of atmospheric aerosols with expected continued changes in the future.
Chen Cui   +8 more
doaj   +1 more source

Quantification of black carbon mixing state from traffic: implications for aerosol optical properties [PDF]

open access: yesAtmospheric Chemistry and Physics, 2016
The climatic impacts of black carbon (BC) aerosol, an important absorber of solar radiation in the atmosphere, remain poorly constrained and are intimately related to its particle-scale physical and chemical properties.
M. D. Willis   +11 more
doaj   +1 more source

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

open access: yesAdvanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies   +2 more
wiley   +1 more source

Topics in Energy Release and Particle Acceleration in the Heliosphere [PDF]

open access: yes, 2014
This thesis investigates both the release of energy in solar flares, and the acceleration and transport of particles in various astrophysical situations.
Armstrong, Craig Keith
core  

Numerical Simulations of Solar Near-relativistic Electron Transport in the Heliosphere with Different Injection Source Models, the Continuous Model and the Random Cells Model

open access: yesThe Astrophysical Journal
We reproduce the time-intensity profiles of two solar near-relativistic electron events observed by ACE in interplanetary space, using numerical simulations of particle transport in the heliosphere with different injection source models.
G. Qin, L.-L. Lian, L. Qiao, S.-S. Wu
doaj   +1 more source

Energetic Solar Flare X-Rays Observed by Satellite and Their Correlation with Solar Radio and Energetic Particle Emission

open access: yesThe Astrophysical Journal, 1968
Solar flare X ray bursts detected by OGO spacecraft correlated with radio emission and solar flare electron and proton ...
R. L. Arnoldy   +2 more
openaire   +1 more source

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