Metabuscador

Filtrado por:

Temas

Recursos

Año

Aproximadamente 4098 registro(s) hasta el momento: (journal)

Mostrar 10 | 50 | 100 resultados por página

Recurso libre

High-efficiency silver-halide sensitized gelatin holograms with low absorption and scatter
Beléndez Vázquez, Augusto - Neipp López, Cristian - Flores, Marcos - Pascual Villalobos, Inmaculada

Formato:	info:eu-repo/semantics/article
Enlaces:	We report for the first time the results of a comparative performance study of silver-halide sensitized gelatin (SHSG) holograms recorded in the familiar Agfa 8E75 HD plates and the new BB-640 plates manufactured by Holographic Recording Technologies. High diffraction efficiency…
Fecha:	2009-02-03
Recurso:	RUA Docencia

Recurso libre

Design and evaluation of an improved microwave-based thermal nebulizer for liquid sample introduction in inductively coupled plasma atomic emission spectrometry
Grindlay Lledó, Guillermo - Gras García, Luis - Mora Pastor, Juan - Hernandis Martínez, Vicente

Formato:	info:eu-repo/semantics/article
Enlaces:	A re-designed microwave-based thermal nebulizer (MWTN) that overcomes all the drawbacks shown by previous prototypes (i.e. lack of robustness, poor heating efficiency) is presented. The new device employs an optimized TM010 cavity and nozzle design. MWTN performance was evaluated in…
Fecha:	2010-02-17
Recurso:	RUA Docencia

Recurso libre

Formato:	Article
Enlaces:	En este artículo se describe la nueva especie de Caenolestes, en la Cordillera del Cóndor-Ecuador.
Fecha:	2012-07-18
Recurso:	Escuela Politécnica Nacional

Recurso libre

The X-ray quiescence of Swift J195509.6+261406 (GRB 070610): an optical bursting X-ray binary?
Rea, Nanda - Jonker, Peter G. - Nelemans, Gijs - Pons Botella, José Antonio - Kasliwal, Mansi M. - Kulkarni, Shrinivas R. - Wijnands, Rudy

Formato:	info:eu-repo/semantics/article
Enlaces:	We report on an ~63 ks Chandra observation of the X-ray transient Swift J195509.6+261406 discovered as the afterglow of what was first believed to be a long-duration gamma-ray burst (GRB 070610). The outburst of this source was characterized by unique…
Fecha:	2013-11-14
Recurso:	RUA Docencia

Recurso libre

Harmonic balance approaches to the nonlinear oscillators in which the restoring force is inversely proportional to the dependent variable
Beléndez Vázquez, Augusto - Méndez Alcaraz, David Israel - Beléndez Vázquez, Tarsicio - Hernández Prados, Antonio - Álvarez López, Mariela Lázara

Formato:	info:eu-repo/semantics/article
Enlaces:	The second-order harmonic balance method is used to construct three approximate frequency-amplitude relations for a conservative nonlinear singular oscillator in which the restoring force is inversely proportional to the dependent variable. Two procedures are used to solve the nonlinear differential…
Fecha:	2009-01-26
Recurso:	RUA Docencia

Recurso libre

Molecular evolution of peptide methionine sulfoxide reductases (MsrA and MsrB): on the early development of a mechanism that protects against oxidative damage
Delaye, L - Becerra Bracho, Arturo Carlos ll - Orgel, LE - Lazcano Araujo Reyes, Antonio Eusebio

Formato:	Artículo de investigación
Enlaces:	Methionine sulfoxide reductases, enzymes that reverse the oxidation of methionine residues, have been described in a wide range of species. The reduction of the diastereoisomers of oxidized methionine is catalyzed by two different monomeric methionine sulfoxide reductases (MsrA and MsrB)…
Fecha:	20130312T14:38:32Z, 20130312T14:38:32Z, 2007
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

Protein disulfide oxidoreductases and the evolution of thermophily: was the last common ancestor a heatloving microbe?
Becerra Bracho, Arturo Carlos ll - Delaye, L - Lazcano Araujo Reyes, Antonio Eusebio - Orgel, L

Formato:	Artículo de investigación
Enlaces:	Protein disulfide oxidoreductases (PDOs) are redox enzymes that catalyze dithioldisulfide exchange reactions. Their sequences and structure reveal the presence of two thioredoxin fold units, each of which is endowed with a catalytic site CXXC motif. PDOs are the outcome of…
Fecha:	20130312T14:38:32Z, 20130312T14:38:32Z, 2007
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

Jonathan Miller's Alice In Wonderland (1966): a suitable case for treatment
McWilliam, Rohan

Recurso libre

Formato:	Article
Enlaces:	Media theorist Marshall McLuhan described media as an extension of man and that each new medium or technology introduces a change to the scale or pace or pattern in human affairs (McLuhan 1994). In 100 BC paper discovery permitted recording…
Fecha:	2013-11-14
Recurso:	Anglia Ruskin University

Recurso libre

10.

Prospects for a heterodox economics of the environment and sustainability
Douai, Ali - Mearman, Andrew - Negru, Ioana

Formato:	Article
Enlaces:	This paper introduces a Special Issue on heterodox economics of the environment and sustainability. At present, humanity faces several challenges, such as resource scarcity, biodiversity loss and climate change. And yet, we would argue, contributions from traditional ‘heterodox’ schools of…
Fecha:	2012-12-13
Recurso:	Anglia Ruskin University