نتایج جستجو برای: particles deposited on road

تعداد نتایج: 8518133  

The aim of the present research is to convert bioinert surface of NiTi to bioactive and biocompatible surface. In order to develop a bioactive and corrosion resistant film on NiTi, electrophoretic deposition process was done and TiO2 particles were deposited on the NiTi surface. Suspensions including TiO2 particles were prepared using a mixture of acetone and n-butanol (0%, 30%, 60%, 80% and 10...

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Soil erosion is of the most important environmental challenges and factors of forest damage, which is, occur because of the land use change, road construction and lack of vegetation cover. Forest soil is naturally penetrable but forest roads are not. This issue causes the flows runoff on road surface and washes soil particles. Thus, forest roads must be planned and constructed accurately. So, t...

Journal: :journal of nanostructures 2016
m. pirhadi s. feshki m. marandi r. davarnejad

dye sensitized solar cell was fabricated from a double layer photoanode. first, tio2 nanoparticles  were synthesized by hydrothermal method. these tio2 nps were deposited on fto glasses by electrophoretic deposition  method in applied voltage of 5 v and epd time of 2.5-10 min. then tio2 hollow spheres (hss) were synthesized by sacrificed template method with carbon spheres as template and ttip ...

Journal: :Inhalation toxicology 2012
J F Gomes P C Albuquerque Rosa M Miranda Telmo G Santos M T Vieira

This article describes work performed on the assessment of the levels of airborne ultrafine particles emitted in two welding processes metal-active gas (MAG) of carbon steel and friction-stir welding (FSW) of aluminium in terms of deposited area in alveolar tract of the lung using a nanoparticle surface area monitor analyser. The obtained results showed the dependence from process parameters on...

2017
Y. Suda T. Nishimura M. Akazawa Y. Sakai N. Homma

Carbon thin films containing many fine carbon particles were deposited by a pulsed ArF laser ablation technique assisted by inductively coupled plasma (ICP). The sizes of the particles were found to be ~ 100 nm. The particles seemed to be coagulated from several finer particles of size ~ 10 nm. When ICP was applied to a plume, the shape of the coagulated particles became spherical. The deposite...

Surface characteristic of particles is one of the main parameters controlling the properties of deposited layer in electrophoretic deposition. To modify the surface characteristic of particles, one of the methods is the addition of additives to the suspensions of powder-solvent. There are many reports dealing with the effect of surface characteristics of particles on uniformity and pattern of d...

In this study, heat transfer and aerosol deposition in the under-floor and baseboard heating systems have been investigated, numerically. The aim of this study is a comparison between these heating systems. This comparison obtains the optimal heating system with low suspended particles in the air. Computational fluid dynamic with Eulerian-Lagrangian method has been used to simulate fluid and pa...

Journal: :iranian journal of medical physics 0
shila banari bahnamiri physics department, faculty of science, ferdowsi university of mashhad, mashhad, iran

introduction the potential hazards posed by exposure to radiation from radon have been of great concern worldwide, since it is especially associated with increased risk of lung cancer. some radioisotopes of radon progeny deposited in the human lungs emit β particles followed by the γ rays. while γ rays are comparatively less damaging to the respiratory system than α and β particles, it is the p...

1997
J. C. Moran J. H. Lienhard

The spatial distribution of deposited aerosol particles shows substantial statistical variation. This variation is especially important for sampling techniques having a high spatial resolution, such as laser-based methods, or for experiments involving a small sample size (few identical locations measured) or a short duration. This paper develops a criterion to ensure adequate statistical conver...

Journal: :journal of nanostructures 2012
s. darvishi s. m. borghei s. a. hashemizadeh

in this study, silver nanoparticles were synthesized by chemical reduction method at different concentrations of ag colloid in the range of 500-16000 ppm. nanoparticles were deposited by spin coating method on pre-etched glass and si substrates. structural, optical and electrical properties of the samples were studied using scanning electron microscopy equipped with edax, uv-vis spectrophotomet...

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