Browsing Makale Koleksiyonu by Publisher "ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD"
Now showing items 1-10 of 10
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Barrier height effect on binding energies of shallow hydrogenic impurities in coaxial GaAs/AlxGa1-xAs quantum well wires under a uniform magnetic field
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2007)The ground state binding energies of axial hydrogenic impurities in a coaxial cylindrical quantum well wire are reported as a function of the barrier height and the radius of wire in the presence of a uniform magnetic field ... -
Descriptions of two new Early Cretaceous (Hauterivian) ensign wasp genera (Hymenoptera : Evaniidae) from Lebanese amber
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2004)Two new ensign wasp (Hymenoptera: Evaniidae) genera, Protoparevania Deans and Eovernevania Deans, and species, P. lourothi Deans and E. cyrtocerca Deans, are described from the Lebanese amber outcrop of Mdeirij/Hammana. ... -
The early Upper Paleolithic occupations at Ucagizli Cave (Hatay, Turkey)
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2009)This paper summarizes results from excavations at Ucagizli Cave (Hatay, Turkey) between 1999 and 2002 and 2005. This collapsed karstic chamber contains a sequence of early Upper Paleolithic deposits that span an interval ... -
Flora of gypsum areas in Sivas in the eastern part of Cappadocia in Central Anatolia, Turkey
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2005)This research was carried out in Sivas province between 2001 and 2003 years and 1450 plant specimens were collected during this period. Identification of the specimens revealed presence of 340 taxa belonging to 164 genera ... -
Intersubband electron transition across a staircase potential containing quantum wells: light emission
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2005)We present a theoretical investigation of a novel staircase-like light emitter based on the GaAs/GaxAl1-xAs material system. The emission wavelength is around 12 mum. The device operation is based on the intersubband ... -
Intersubband optical absorption of double Si delta-doped GaAs layers
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2004)For different applied electric fields the intersubband transitions of double Si delta-doped GaAs structures are theoretically investigated for a uniform donor distribution. The electronic structure has been calculated by ... -
Intersubband transitions in an asymmetric double quantum well
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2007)The intersubband optical absorption in an asymmetric double quantum well for different barrier widths and the right well widths are theoretically calculated within the framework of effective mass approximation. The results ... -
Nimodipine can improve cerebral metabolism and outcome in patients with severe head trauma
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2009)In the present study, the effect of nimodipine was investigated in a patient with severe head trauma. Nimodipine was administered into the peripheral vein to prevent secondary neuronal damages in patients. The five patients ... -
Shallow impurity binding energy in lateral parabolic confinement under an external magnetic field
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2008)We have described the calculation of hydrogenic impurity binding energies in cylindrical GaAs-Ga(1-x)Al(x)As quantum well wires (QWWs) with lateral parabolic confinement in the presence of an axial magnetic field. The ... -
The variation of electronic properties with the doping concentration of modulation-doped AlxGa1-xAs-GaAs double quantum wells
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2007)In this paper we have calculated the sub-band structure and the confinement potential of modulation-doped Ga1-xAlxAs-GaAs double quantum wells as a function of the doping concentration. The electronic properties of this ...