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Garcia, J. A. ; Remon, A. ; Urchulutegui, M. ; Piqueras de Noriega, Javier ; Jiménez, J. ; Torres, A. | Wiley-V C H Verlag Gmbh | 1997-02-16Infrared luminescence of Bi2Sr2CaCu2Ox ceramics, in the range 800 to 1800 nm (0.7 to 1.5 eV) has been investigated by photoluminescence and cathodoluminescence in the scanning electron microscope (SEM). Untreated samples do not show infrared lum[...]texto impreso
Gómez, P. ; Jiménez, J. ; Martín, P. ; Piqueras de Noriega, Javier ; Domínguez-Adame Acosta, Francisco | American Institute of Physics | 1993-11-15The effect of oxygen loss on the luminescence of YBa_2Cu_3O_(7-x) has been investigated by cathodoluminescence (CL) in the scanning electron microscope (SEM) and by Raman microprobe measurements. The results herein indicate that a CL band at 530[...]texto impreso
Pereira, L.. ; Pereira, E. ; Cremades Rodríguez, Ana Isabel ; Piqueras de Noriega, Javier ; Jiménez, J. ; Bielza, J.M. | Elsevier Science SA | 1999-07Diamond and diamond-like films grown by the torch flame method have been analysed by different techniques, namely scanning electron microscopy, Raman spectroscopy, electron paramagnetic resonance and catholuminescence microscopy, in order to inv[...]texto impreso
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Gutierrez-Loli, R. ; Ferradas, C. ; Diestra, A. ; Traianou, A. ; Bowman, N. ; Bok, J. ; Reimer-McAtee, M. ; Ramal, C. ; Ticona, E. ; Steinberg, H. ; Mayta, H. ; Calderón, M. ; Calla-Choque, J.S. ; Sterling, C. ; Gilman, R.H. ; Pinedo, L.C. ; Valencia, G. ; Sánchez, L. ; Málaga, E. ; Zhu, D. ; Jiménez, J. ; Bern, C. ; Angulo, N. ; Schiaffino, F. ; Acosta, J. ; Holtz, M. ; Clark, D. ; Clark, T. ; Trompeter, G. ; Choi, J. ; Gandarilla, O. ; Dorn, M. ; Fortuny, E. ; Galdos, G. ; Colanzi, R. | American Society of Tropical Medicine and Hygiene | 2019-12-06T20:57:49ZQuantitative polymerase chain reaction (qPCR) for Toxoplasma gondii multicopy genes has emerged as a promising strategy for sensitive detection of parasite DNA. qPCR can be performed from blood samples, which are minimally invasive to collect. H[...]texto impreso
Numerical experiments on modified turbulent channels are used to differentiate between possible turbulence generation mechanisms in wall bounded flows. It is shown that a regeneration cycle exists which is local to the near-wall region and does [...]texto impreso
Kawahara, Genta ; Jiménez, J. ; Uhlmann, Markus ; Pinelli, Alfredo | 2003The linear inviscid instability of an infinitely thin vortex sheet, periodically corrugated with finite amplitude along the spanwise direction, is investigated analytically. Two types of corrugations are studied, one of which includes the presen[...]texto impreso
Gómez, P. ; Piqueras de Noriega, Javier ; Remon, A. ; Garcia, J. A. ; Jiménez, J. ; Torres, A. | Wiley-V C H Verlag Gmbh | 1996-10-16The effect of vacuum thermal annealing and electron irradiation on the luminescence of Bi_2Sr_2CaCu-2O_x ceramics has been investigated by cathodoluminescence (CL) in the scanning electron microscope (SEM), time-resolved photoluminescence (PL), [...]texto impreso
The near-wall region is the only place in zero-pressure-gradient boundary layer where the production of turbulent energy exceeds dissipation. The excess energy helps maintain turbulence in the core region, where the opposite is true. It is shown[...]texto impreso
González Díaz, Germán ; Artús, L. ; Calleja, E. ; Cuscó, R. ; Iborra, E. ; Jiménez, J. ; Pastor, D. ; Peiró, F. | American Institute of Physics | 2006-08-15We have studied the effects of rapid thermal annealing at 1300 degrees C on GaN epilayers grown on AlN buffered Si(111) and on sapphire substrates. After annealing, the epilayers grown on Si display visible alterations with craterlike morphology[...]texto impreso
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Kawahara, Genta ; Jiménez, J. ; Uhlmann, Markus ; Pinelli, Alfredo | Japan Society of Mechanical Engineers | 2000The linear stability analysis has been performed at Re.TAU.=180 for a turbulent-channel-type base flow with a periodic undulation in the spanwise direction in order to elucidate the generation mechanism of streamwise vorticity through the instab[...]texto impreso
Jiménez, J. ; Uhlmann, Markus ; Kawahara, Genta ; Pinelli, Alfredo | American Physical Society | 1999We have investigated a fully turbulent, low-Reynolds number plane channel with one impermeable and one porous wall. The latter is assumed to obey Darcy's law and to be mass-neutral in the mean. Our DNS data show an enhancement of wall friction u[...]texto impreso
Jiménez, J. ; Uhlmann, Markus ; Pinelli, Alfredo ; Kawahara, Genta | Cambridge University Press | 2001The behaviour of turbulent shear flow over a mass-neutral permeable wall is studied numerically. The transpiration is assumed to be proportional to the local pressure fluctuations. It is first shown that the friction coefficient increases by up [...]
