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Effect of pressure on abrasive wear mode transitions in micro-abrasive wear tests of WC-Co P20
(2013)
The purpose of this work was to analyse the effect of the pressure (variable and constant) on the wear mode transition in ball-cratering wear tests. It was conducted using balls of 52100 steel, specimens of WC-Co P20 and ...
Friction coefficient and abrasive wear modes in ball-cratering tests conducted at constant normal force and constant pressure-Preliminary results
(ELSEVIER SCIENCE SA, 2009)
The micro-scale abrasive wear test by rotative ball has gained large acceptance in universities and research centers, being widely used in studies on the abrasive wear of materials. Two wear modes are usually observed in ...
Stimulation of electron Bernstein modes by perpendicular ion beams
(American Geophysical Union, 2003)
This investigation studies the characteristics of electron cyclotron harmonic waves generated by almost monoenergetic perpendicular ion beams. Its motivation is twofold: (1) the new type of free energy source, beams made ...
Number of particle creation and decoherence in the nonideal dynamical Casimir effect at finite temperature
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2009)
In this work we investigate the dynamical Casimir effect in a nonideal cavity by deriving an effective Hamiltonian. We first compute a general expression for the average number of particle creation, applicable for any law ...
On the diurnal cycle of urban aerosols, black carbon and the occurrence of new particle formation events in springtime Sao Paulo, Brazil
(COPERNICUS GESELLSCHAFT MBHGOTTINGEN, 2012)
Large conurbations are a significant source of the anthropogenic pollution and demographic differences between cities that result in a different pollution burden. The metropolitan area of Sao Paulo (MASP, population 20 ...
On the diurnal cycle of urban aerosols, black carbon and the occurrence of new particle formation events in springtime São Paulo, Brazil
(Copernicus Gesellschaft Mbh, 2012-01-01)
Large conurbations are a significant source of the anthropogenic pollution and demographic differences between cities that result in a different pollution burden. the metropolitan area of São Paulo (MASP, population 20 ...
Coherent state approach to the cross-collisional effects in the population dynamics of a two-mode Bose-Einstein condensate
(Academic Press Inc Elsevier ScienceSan DiegoEUA, 2009)
Understanding aerosol formation mechanisms in a subtropical atmosphere impacted by biomass burning and agroindustry
(2017-01-01)
This work provides evidence for the existence of strong seasonality in homogeneous and heterogeneous aerosol formation in a subtropical region affected by agricultural biomass burning. Acquisitions of aerosol size distributions ...