SPIN EFFECT ON THE RESONANT TUNNELING CHARACTERISTICS OF A DOUBLE-BARRIER HETEROSTRUCTURES UNDER LONGITUDINAL STRESSES H. Paredes Gutiérrez 1 , S. T. Pérez-Merchancano 2 and G. E. Marques 3 1 Escuela de Física, Universidad Industrial de Santander, A. A. 678, Bucaramanga, Colombia 2 Departamento de Física, Universidad del Cauca, calle 5 4-70, Popayán, Colombia 3 Departamento de Física, Universid...

www.sciencemag.org SCIENCE VOL 323 13 FEBRUARY 2009 843 COVER An image of Mare Moscoviense on the lunar farside, taken by the Terrain Camera aboard the SELENE (Kaguya) spacecraft on 17 January 2008. Crater frequency distributions derived from such images yield ages of about 2.5 billion years for several volcanic deposits in this mare, indicating that volcanism on the lunar farside lasted about ...

Alessandra R. P. Ambrozin, Jair Mafezoli , Paulo C. Vieira*, João B. Fernandes, M. Fátima das G. F. da Silva, Javier A. Ellena and Sérgio de Albuquerque c Departamento de Química, Universidade Federal de São Carlos, Rod. Washington Luiz, km 235, CP 676, 13565-905 São Carlos SP, Brazil Instituto de Física de São Carlos, Universidade de São Paulo, Av. Trabalhador São Carlense, 400, 13560-970 São ...

905. [5] Chapman M. G. and Tanaka K. L. (2002) JGR, 106, 10,087-10,100. Abstract #1402. [6] Rossi A. P. et al. (2008) JGR, 113. [7] Sowe M. et al. (2008) EPSC III, Abstract #510. [8] Roach L. H. et al. (2008) LPSCXXXIX,510. [8] Roach L. H. et al. (2008) LPSCXXXIX, Abstract #1823. [9] Vaniman D. T. et al. (2004), Nature,1823. [9] Vaniman D. T. et al. (2004), Nature,

Alessandra R. P. Ambrozin, Ana C. Leite, Fabiana C. Bueno, Paulo C. Vieira,* João B. Fernandes, Odair C. Bueno, M. Fátima das G. Fernandes da Silva, Fernando C. Pagnocca, M. José A. Hebling and Maurício Bacci Jr. Departamento de Química, Universidade Federal de São Carlos, CP 676, 13565-905 São Carlos SP, Brazil Centro de Estudos de Insetos Sociais, Universidade Estadual Paulista, CP 199, 13506...

a Institut für Physikalische Chemie, WWU Münster, Corrensstraße 30, D 48149 Münster, Germany b Laboratório dos Materiais Vitreous (LaMaV), Universidade Federal em São Carlos, Rod. Washington Luis, km 235, C.P. 676 13.565-905, São Carlos, SP, Brazil c Departamento de Física e Astronomia, Universidade Estadual de Ponta Grossa, CEP 84030-900 Ponta Grossa, PR, Brazil d Instituto da Física em São Ca...

We present an analysis of high resolution spectra in the far-UV − UV range (∼905-2000Å) with non-LTE, spherical, hydrodynamical, line-blanketed models, of three O-type Galactic stars, and derive their photospheric and wind parameters. These data extend previously analyzed samples and fill a gap in spectral type coverage. The combined sample confirms a revised (downward) Teff scale with respect ...

A 35 year old HIV positive patient from Hong Kong presented with a fever, cough and a skin rash in association with a lung mass, all of which were due to disseminated Penicillium marneVei infection. He made a good response to antifungal therapy. The lung mass is a previously undescribed pulmonary manifestation of disseminated Penicillium marneVei infection. Infections with this fungus should be...

The simplicity of keyword queries has made them particularly attractive to the technically unskilled user base, tending to become the de-facto standard for querying on the web. Unfortunatelly, alongside its simplicity, came also the loose semantics. Researchers have for a long time studied ways to understand the keyword query semantics and retrieve the most relevant data artifacts. For the web,...