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Thermal behaviour studies of solid state compounds of cinnamylidenepyruvate with trivalent lanthanides and yttrium (III) in an atmosphere of CO2
(Editora Unesp, 2002-01-01)
Solid state cinnamylidenepyruvate of trivalent lanthanides (except for promethium) and yttrium, were prepared. Thermogravimetry, derivative thermogravimetry (TG, DTG), differential scanning calorimetry (DSC), X-ray diffraction ...
Simultaneous determination of Cd, Pb, and Cu in atmospheric particulate matter from different regions of the city of Presidente Prudente, Sao Paulo, Brazil
(2016-07-02)
This article explores the assessment of atmospheric deposition, from the analysis of the sampling methods, the analytical procedures for chemical characterisation of pollutants, and the main results from the scientific ...
Thermal behaviour studies of solid state compounds of cinnamylidenepyruvate with trivalent lanthanides and yttrium (III) in an atmosphere of CO2
(2002-12-01)
Solid state cinnamylidenepyruvate of trivalent lanthanides (except for promethium) and yttrium, were prepared. Thermogravimetry, derivative thermogravimetry (TG, DTG), differential scanning calorimetry (DSC), X-ray diffraction ...
Effect of atmosphere on the sintering and grain growth of tin oxide
(1999-12-01)
High purity SnO 2 powder (>99.9%) was compacted in cylindrical pellets and sintered in atmospheres of dry argon, argon with water vapor, oxygen and CO 2 using 10 °C/min up to 1200 °C or isotherms in the range of 1000 to ...
A method for total analysis of minor and trace elements in the soil clay fraction to atmospheric aerosols.
(Sociedad Chilena de Química, 1984)
Several methods recommended for soil analysis using acid digestion were tested for the total analysis of minor and trace elements of the clay fraction. The proposed method using mixtures of HClO4/HF was adequate to dissolve ...
Local variation of the superficial atmospheric electricity activity in a tropical region
(Society of Atmospheric Electricity of Japan, 2015)
A study of the atmospheric surface electrical activity in the Maracay city (10°14'59.1"N 67°37'20.6"W 436masl) is performed, through the analysis of the Carnegie curve. We present the methodological construction of the ...
Temporal variability of atmospheric turbidity and DNI attenuation in the sugarcane region, Botucatu/SP
(2016-11-15)
In this study, attenuation of direct normal solar irradiance (DNI) in Botucatu / São Paulo, an area under the influence of local and adjacent agricultural burning, is expressed using the Linke's turbidity factor (TL) in ...
The state of Pluto’s atmosphere in 2012–2013
(Elsevier, 2015)
We observed two stellar occultations on UT 4 May 2013 and UT 9 September 2012, with the aim of measuring
Pluto’s atmospheric parameters. Both of these events were observed by world-wide collaborations
of many observers, ...
Effect of atmosphere and dopants on sintering of SnO2
(2002-12-01)
Tin oxide is an n type semiconductor material with a high covalent behavior. Mass transport in this oxide depends on the surface state promoted by atmosphere or by the solid solution of aliovalent oxide doping. The sintering ...