Using the CORSIKA shower simulation package, the spatial distribution of energy deposited by the shower in the atmosphere through ionization is obtained and the distribution of light arriving to the detector is calculated. The resulting shower image is compared with that obtained using the NKG distribution of particles in the shower and a constant fluorescence yield. Taking into account the dis...

This study is focused on the characterization of particles emitted in the metal active gas welding of carbon steel using mixture of Ar + CO2, and intends to analyze which are the main process parameters that influence the emission itself. It was found that the amount of emitted particles (measured by particle number and alveolar deposited surface area) are clearly dependent on the distance to t...

Abstract:Electroless Nickel-phosphorus (EN) coatings provide high performance in various industrial fields due to their unique properties such as excellent corrosion and wear resistance. This paper aims to study the effect of ZnO nano-particles addition on corrosion behavior of EN coatings. Various amounts of ZnO nano-particles with average diameter of 50 nm were added to hypophosphite reduced ...

nanosized tio2 particles were prepared by sol–gel method. the tio2 particles were co-deposited with chromium using electrodeposition technique. in investigating of coating surfaces by scanning electron microscope (sem), the results showed that the morphology of the coating surface was changed by adding tio2 nanoparticles to the chromium coating. the corrosion behavior of the coatings was assess...

Repartitioning of semi-volatile organic compounds (SVOCs) between particles is an important process to understand the particle growth and shrinkage in the atmosphere environment. Here, by using optical tweezers coupled with cavity-enhanced Raman spectroscopy, we report the repartitioning of glycerol between a levitated glycerol/NaNO3/H2O droplet and surrounding glycerol/NaNO3/H2O droplets depos...

Respiratory irritants cause acute lung injury. Their effects are distinguished from hypersensitivity induced lung injury by their mechanism of action a direct toxic effect and the speed of onset within minutes or hours rather than months or years. Respiratory irritants may be inhaled or transported to the lungs by the circulation. This article focuses on the long term consequences of inhaled re...

of spherical particles are ‘‘cast’’ vertically over a planar horizontal sions, X and Z, and then we generated the deposition over surface. Upon first contact (with the surface or with a previously a segment of length 10 particle-diameter units. Unlike this deposited particle) each particle stops. This model helps material example, interesting simulations are in 3D. In order to scientists to stu...

Gallium nitride GaN nanowires are grown with controlled diameter and position by combining electron-beam lithography and naturally occurring surface tension forces. Lithographically defined particle diameters were held constant while only the film thickness was varied. Annealing drives as-deposited metal disks toward hemispheres according to conservation of volume constraints, resulting in well...

Outdoor and indoor (subway) samples were collected by passive sampling in urban Seoul (Korea) and analyzed with computer-controlled scanning electron microscopy coupled with energy dispersive x-ray spectroscopy (CCSEM-EDX). Soil/road dust particles accounted for 42%-60% (by weight) of fine particulate matter larger than 1 µm (PM(2.5-1.0)) in outdoor samples and 18% of PM2.5-1.0 in subway sample...