Results 71 to 80 of about 204,775 (339)

Light scattering at small angles by atmospheric irregular particles: modelling and laboratory measurements [PDF]

open access: yesAtmospheric Measurement Techniques, 2014
We have investigated the behaviour of light scattering by particulates of various sizes (0.1 μm to 100 μm) at a small scattering angle (below 20°). It has been previously shown that, for a small angle, the scattered intensities are weakly dependent upon ...
T. Lurton   +6 more
doaj   +1 more source

The effect of helicopter configuration on the fluid dynamics of brownout [PDF]

open access: yes, 2008
Brown’s Vorticity Transport Model, coupled to an additional particle transport model, is used to simulate the development of the dust cloud that can form around a helicopter when operating in dusty or desert conditions.
Brown, R., Phillips, C.
core   +1 more source

Acoustofluidic Synthesis of Particulate Nanomaterials [PDF]

open access: yesAdvanced Science, 2019
AbstractSynthesis of nanoparticles and particulate nanomaterials with tailored properties is a central step toward many applications ranging from energy conversion and imaging/display to biosensing and nanomedicine. While existing microfluidics‐based synthesis methods offer precise control over the synthesis process, most of them rely on passive ...
Po‐Hsun Huang   +9 more
openaire   +7 more sources

Controlled Aggregation of Pyrene‐Based Supramolecular Nanostructures for Light‐Driven Switchable H2 or H2O2 Production

open access: yesAdvanced Functional Materials, EarlyView.
This work reports the self‐assembly of a pyrene derivative into two distinct nanostructures and their application in visible‐light photocatalysis. The two nanostructures exhibit completely different yet complementary photocatalytic activities, promoting either H2 or H2O2 evolution.
Marianna Barbieri   +6 more
wiley   +1 more source

Microscopic and chemical studies of metal particulates in tree bark and attic dust : evidence for historical atmospheric smelter emissions, Humberside, UK. [PDF]

open access: yes, 2006
Tree barks and attic dusts were examined as historical archives of smelter emissions, with the aim of elucidating the pathways of pollution associated with a plume of Sn and Pb contamination in top soils, found close to the former Capper Pass smelter ...
Hodgkinson, E.S.   +2 more
core   +1 more source

Anionic Citrate‐Based 3D‐Printed Scaffolds for Tunable and Sustained Orthobiologic Delivery to Enhance Tissue Regeneration

open access: yesAdvanced Functional Materials, EarlyView.
A potent anionic citric acid‐based 3D‐printed scaffold is developed for the sustained and controlled release of orthobiologics to enhance orthopedic therapeutic efficacy. Comprehensive in vivo studies demonstrated effective bone fusion and high safety at a low dose of BMP‐2 delivered by the system, establishing it as a promising platform for safe ...
Se‐Hwan Lee   +12 more
wiley   +1 more source

Nutrients and Acid in the Rain and Dry Fallout at Fayetteville, Arkansas (1980-1982) [PDF]

open access: yes, 1983
Wet and dry fallout at Fayetteville, Arkansas have been collected separately and analyzed since April, 1980. The precipitation-weighted-average pH for two yearly periods of rainfall were 4.72 (6/80-5/81) and 4.75 (6/81-5/82).
Steele, Kenneth F., Wagner, George H.
core   +2 more sources

Z‐Scheme Water Splitting Systems Based on Solid‐State Electron Conductors

open access: yesAdvanced Functional Materials, EarlyView.
This review examines the latest advances in Z‐scheme overall water splitting (OWS) systems for solar hydrogen production. These systems consist of suspended or immobilized hydrogen evolution photocatalysts (HEPs) and oxygen evolution photocatalysts (OEPs).
Chen Gu   +3 more
wiley   +1 more source

Development of asthmatic inflammation in mice following early-life exposure to ambient environmental particulates and chronic allergen challenge

open access: yesDisease Models & Mechanisms, 2013
SUMMARY Childhood exposure to environmental particulates increases the risk of development of asthma. The underlying mechanisms might include oxidant injury to airway epithelial cells (AEC).
Cristan Herbert   +7 more
doaj   +1 more source

Studies of stratospheric particulates [PDF]

open access: yes
A sophisticated computer model of polar stratospheric clouds was developed and used to study the properties of ice clouds. The model has recently been extended to investigate nitric acid clouds and ice clouds as well as their interactions with ...
Hamill, Patrick   +3 more
core   +1 more source

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