Buscar
Mostrando ítems 11-20 de 25267
Sintering of porous alumina obtained by biotemplate fibers for low thermal conductivity applications
(2013-06-01)
In this research report, a sintering process of porous ceramic materials based on Al2O3 was employed using a method where a cation precursor solution is embedded in an organic fibrous cotton matrix. For porous green bodies, ...
Low doses of glyphosate enhance growth, CO2 assimilation, stomatal conductance and transpiration in sugarcane and eucalyptus
(2018-05-01)
INTRODUCTION: Sublethal doses of herbicides can enhance plant growth and stimulate other process, an effect known as hormesis. The magnitude of hormesis is dependent on the plant species, the herbicide and its dose, plant ...
Mechanical strength and thermal conductivity of low-porosity gypsum plates
(ABM, ABC, ABPol, 2009)
The thermal conductivity and mechanical strength of gypsum and gypsum-cellulose plates made from commercial plaster by a new process have been measured. The gypsum parts made by the new process, 'novogesso', have high ...
Temperature dependence of electron properties of Sn doped In2O3 nanobelts
(Elsevier B.V., 2007-11-15)
This paper reports on the measurements of transport properties of high crystalline quality Sn doped In2O3 nanobelts. The samples presented metallic conduction in a large range of temperatures; however, at low temperatures, ...
Cutoff lows, moisture plumes, and their influence on extreme-precipitation days in central Chile
(2021)
A study of 500-hPa cutoff lows in central Chile during 1979–2017 was conducted to contrast cutoff lows associated with the lowest quartile of daily precipitation amounts (LOW25) with cutoff lows associated with the highest ...
Analog parameters of solid source Zn diffusion in X Ga1-XAs nTFETs down to 10 K
(2016-10-28)
The analog parameters of In0.53Ga0.47As and In0.7Ga0.3As nTFETs with solid state Zn diffused source are investigated from room temperature down to 10 K. The In0.7Ga0.3As devices are shown to yield a higher on-state current ...
Conductive hearing loss in children with bronchopulmonary dysplasia: A longitudinal follow-up study in children aged between 6 and 24 months
(Elsevier B.V., 2010-06-01)
Aims: To determine the occurrence of isolated and recurrent episodes of conductive hearing loss (CHL) during the first two years of life in very low birth weight (VLBW) infants with and without bronchopulmonary dysplasia ...
Conductive hearing loss in children with bronchopulmonary dysplasia: A longitudinal follow-up study in children aged between 6 and 24 months
(Elsevier B.V., 2010-06-01)
Aims: To determine the occurrence of isolated and recurrent episodes of conductive hearing loss (CHL) during the first two years of life in very low birth weight (VLBW) infants with and without bronchopulmonary dysplasia ...
Three-phase half-controlled boost converter operating in quasi-critical conduction mode
(2019-01-25)
AC-DC converters, which operate in discontinuous conduction mode, can be used as power factor correction. Operating with constant duty cycle, the control system presents low complexity, however, for low static voltage ...