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Now showing items 12891-12900 of 13959
Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coating
(Elsevier, 2015-09-01)
The total emissivity of the absorbing surfaces is a critical parameter in the calculation of the radiative thermal losses in solar thermal collectors. This is because the radiative heat losses have a significant economic ...
Experimental verification of the anomalous skin effect in copper using emissivity measurements
(AIP, 2013-06-20)
Spectral directional emissivity has been measured in copper between 3 and 24 μm above room temperature. The experimental spectrum shows a weak broad peak between 7 and 14 μm, which is much more acute for higher emission ...
Calibration patterns for predicting residual strengths of steel fibre reinforced concrete (SFRC)
(Elsevier, 2013-11-12)
Steel Fibre Reinforced Concrete (SFRC), a composite construction material, needs reliable prediction and control techniques to promote its use in structural applications. The distribution and orientation of fibres within ...
Optical properties of metals: Infrared emissivity in the anomalous skin effect spectral region
(American Institute of Physics, 2014-09-07)
When the penetration depth of an electromagnetic wave in a metal is similar to the mean free path of the conduction electrons, the Drude classical theory is no longer satisfied and the skin effect becomes anomalous. Physical ...
A global survey of CRM1-dependent nuclear export sequences in the human deubiquitinase family
(Portland Press LTD, 2012-01-01)
The mechanisms that regulate the nucleocytoplasmic localization of human deubiquitinases remain largely unknown. The nuclear export receptor CRM1 binds to specific amino acid motifs termed NESs (nuclear export sequences). ...
IR radiometer sensitivity and accuracy improvement by eliminating spurious radiation for emissivity measurements on highly specular samples in the 2–25 lm spectral range
(Elsevier, 2017-06-10)
This paper indicates that the sensitivity and accuracy of an infrared radiometer for emissivity measurements depends not only on its design and the measurement method, but also on the spurious radiation. This spurious ...
Mid-infrared optical properties of pyrolytic boron nitride in the 390–1050 °C temperature range using spectral emissivity measurements
(Elsevier, 2017-03-17)
This paper shows a systematic experimental and theoretical study on the temperature dependence of the infrared optical properties of pyrolytic boron nitride (pBN), from 390 to 1050 °C for wavelengths between 4 and 16 μm. ...
Reseña de: Valladares, Rafael (ed.), El mundo de un valido. Don Luis de Haro y su entorno, 1643-1661, Madrid, Marcial Pons, 2016
(UNED, 2017)
Reseña de: Valladares, Rafael (ed.), El mundo de un valido. Don Luis de Haro y su entorno, 1643-1661, Madrid, Marcial Pons, 2016, 456 pp., isbn: 9788415963943.
Estados hipermnésicos en la cultura de la memoria y la inflación patrimonializadora: algunos apuntes en torno a la labor experta sobre la memoria de la Guerra Civil Española
(Servicio Editorial de la Universidad del País Vasco/Euskal Herriko Unibertsitatearen Argitalpen Zerbitzua, 2010)
El presente texto pretende ser la presentación de una hipótesis de trabajo a desarrollar en un contexto social en el que se entrecruzan, por un lado, la constante problematización de las identidades personales y colectivas ...
El sino de nacer hombre o mujer: juzgando el orden sexo-género-deseo normativo
(Servicio Editorial de la Universidad del País Vasco/Euskal Herriko Unibertsitatearen Argitalpen Zerbitzua, 2004)
Uno de los órdenes normativos que con más frecuencia se ha reproducido desde los inicios de la sociedad moderna, es el de la matriz heterosexual: todo hombre es masculino y heterosexual, mientras que toda mujer es femenina ...