15 documents found, page 1 of 2
Electrical, optical and photoconductive properties of Sn-doped indium sulfofluo...
Vygranenko, Yuri; Fernandes, M.; Vieira, Manuela; Lavareda, G.; Carvalho, C. Nunes De; Brogueira, P.; Amaral, A.; Barradas, N. P.; Alves, E.This work reports on undoped and Sn-doped indium sulfofluoride thin-films deposited by radio-frequency plasma-enhanced reactive thermal evaporation. The deposition was performed evaporating pure indium or indium-tin alloy in SF6 plasma at substrate temperatures ranging from 373 to 423 K. Rutherford backscattering analysis and secondary-ion mass spectrometry were used to determine the chemical composition of the...
Conducting indium oxide films on plastic substrates by plasma enhanced reactive...
Vygranenko, Yuri; Fernandes, Miguel; Vieira, Manuela; Lavareda, Guilherme; CARVALHO, CARLOS; Brogueira, P.; Amaral, AnaThis work reports on low temperature deposition of conducing indium oxide films by a radio-frequency plasma enhanced reactive thermal evaporation (rf-PERTE) technique. The films were deposited on polyethylene terephthalate (PET) without intentional heating of the substrate and at elevated temperatures up to 150 degrees C. The material stoichiometry was accurately controlled by adjusting deposition conditions in...
From wrinkly elastomers to Janus particles to Janus fibres
Trindade, A. C.; Canejo, J. P.; Patricio, Pedro; Brogueira, P.; Teixeira, Paulo; Godinho, Maria HelenaAim is to fabricate Janus objects possessing two distinct sides, through control and manipulation of uneable sub-micron scale long-lived textures in urethane/urea elastomer films, spheres and fibres. Textures are obtained by UV-irradiation of the elastomers followed by mechanical deformation or swelling in a solvent. Standard chemistry, no complex deposition techniques required. Resulting textures investigated ...
Disseminated mucormycosis in a 6 month old infant following congenital heart de...
Brogueira, P.; Carvalho, N.; Batista, J.; Gonçalves, E.; Sabino, Raquel; Veríssimo, Cristina; Mansinho, K.; Anjos, R.; Toscano, C.This abstract reports a case of a disseminated fungal infection caused by Mucor velutinosus in a 6 month old infant admitted to a intensive care unit and under several risk factors. The species was isolated from urine and 4 days later it was also detected from several tracheal aspirates.Molecular identification of the fungal isolate was performed in order to identify correctly the species.
Highlights from the Pierre Auger Observatory
Pierre Auger collaboration (496 authors); Abreu, P.; Andringa, S.; Assis, P.; Brogueira, P.; Cazon, L.; Conceicao, R.; Diogo, F.; Espadanal, J.The Pierre Auger Observatory is the world’s largest cosmic ray observatory. Our current exposure reaches nearly 40,000 km$^{2}$sr and provides us with an unprecedented quality data set. The performance and stability of the detectors and their enhancements are described. Data analyses have led to a number of major breakthroughs. Among these, we discuss the energy spectrum and the searches for large-scale anisotr...
Depth of maximum of air-shower profiles at the Pierre Auger Observatory. II. Co...
Pierre Auger collaboration (485 authors); Abreu, P.; Andringa, S.; Assis, P.; Brogueira, P.; Cazon, L.; Conceicao, R.; Diogo, F.; Espadanal, J.Using the data taken at the Pierre Auger Observatory between December 2004 and December 2012, we have examined the implications of the distributions of depths of atmospheric shower maximum (Xmax), using a hybrid technique, for composition and hadronic interaction models. We do this by fitting the distributions with predictions from a variety of hadronic interaction models for variations in the composition of th...
InOx thin films deposited by plasma assisted evaporation: application in light ...
Merino, E. G.; Almeida, Pedro L.; Carvalho, Carlos Nunes de; Brogueira, P.; Amaral, A.; Lavareda, GuilhermeAn integration of undoped InOx and commercial ITO thin films into laboratory assembled light shutter devices is made. Accordingly, undoped transparent conductive InOx thin films, about 100 nm thick, are deposited by radiofrequency plasma enhanced reactive thermal evaporation (rf-PERTE) of indium teardrops with no intentional heating of the glass substrates. The process of deposition occurs at very low depositio...
Structural, electrical and magnetic studies of Co:SnO2 and (Co,Mo):SnO2 films p...
Dalui, S.; Rout, S.; Silvestre, António Jorge; Lavareda, G.; Pereira, L. C. J.; Brogueira, P.; Conde, O.Here we report on the structural, optical, electrical and magnetic properties of Co-doped and (Co,Mo)-codoped SnO2 thin films deposited on r-cut sapphire substrates by pulsed laser deposition. Substrate temperature during deposition was kept at 500 degrees C. X-ray diffraction analysis showed that the undoped and doped films are crystalline with predominant orientation along the [1 0 1] direction regardless of ...
Nuclear instruments & methods in physics research section a-accelerators spectr...
Abreu, P.; Aglietta, M.; Ahn, E. J.; Albuquerque, Ivone Freire da Mota e; Allard, D.; Allekotte, I.; Allen, J.; Allison, P.; Castillo, J. AlvarezAcesso restrito: Texto completo. p. 92-102; Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-02-28T13:55:21Z No. of bitstreams: 1 __pdn.sciencedirect.com_....0-S0168900211001276-main.pdf: 705611 bytes, checksum: be1943c8aeefcedd5fa515742b173dc0 (MD5); Made available in DSpace on 2012-02-28T13:55:21Z (GMT). No. of bitstreams: 1 __pdn.sciencedirect.com_....0-S0168900211001276-main.pdf: 705611 byt...
A Search for Point Sources of EeV Neutrons
Pierre Auger collaboration (509 authors); Abreu, P.; Andringa, S.; Assis, P.; Brogueira, P.; Cazon, L.; Conceicao, R.; Diogo, F.; Espadanal, J.A thorough search of the sky exposed at the Pierre Auger Cosmic Ray Observatory reveals no statistically significant excess of events in any small solid angle that would be indicative of a flux of neutral particles from a discrete source. The search covers from -90 to +15 degrees in declination using four different energy ranges above 1 EeV (10^18 eV). The method used in this search is more sensitive to neutron...