280 research outputs found
Produccion de semillas en yacon (Smallanthus sonchifolius (Poepp. & Endl.)) mediante tecnicas de polinizacion controladas.
Binaries with total eclipses in the LMC: potential targets for spectroscopy
35 Eclipsing binaries presenting unambiguous total eclipses were selected
from a subsample of the list of Wyrzykowski et al. (2003). The photometric
elements are given for the I curve in DiA photometry, as well as approximate
Teff and masses of the components. The interest of these systems is stressed in
view of future spectroscopic observations.Comment: 4 pages, 1 figure; poster presented at the conference "Close binaries
in the 21st Century: new opportunities and challenges", Syros, 27-30 June
200
Coherent states of a charged particle in a uniform magnetic field
The coherent states are constructed for a charged particle in a uniform
magnetic field based on coherent states for the circular motion which have
recently been introduced by the authors.Comment: 2 eps figure
On the uncertainty relations and squeezed states for the quantum mechanics on a circle
The uncertainty relations for the position and momentum of a quantum particle
on a circle are identified minimized by the corresponding coherent states. The
sqeezed states in the case of the circular motion are introduced and discussed
in the context of the uncertainty relations.Comment: 4 figure
Some histopathological and clinical correlations in oral squamous cell carcinoma
Oral squamous cell carcinoma (SCC) is an important health problem that causes high mortality and morbidity. Correlations between some clinical and histopathological parameters were studied in 37 oral SCC. Some interesting aspects in oral SCC arising from precancerous lesions were found such as smaller size and a lower TNM stage at the moment of diagnosis. Histological and clinical differences were also found between tumors invading deep tissues by little groups of dissociated malignant cells and those invading by big masses of malignant cells. The possible significance of the intensity of peritumoral eosinophilic infiltrate was also studied.Le carcinome squameux de la cavité orale constitue un problème important de santé, qui est responsable d’une mortalité et d’une morbidité élevées. Nous avons étudié 37 carcinomes squameux de la cavité orale à travers un suivi clinique et une étude des corrélations entre les variables cliniques et histopathologiques. Nous avons relevé différents aspects intéressants en ce qui concerne les carcinomes squameux de la cavité orale qui procédaient de lésions précancéreuses comme leur petite dimention et le bas stade TNM au moment du diagnostic. Nous avons également trouvé des différences cliniques et histopathologiques entre les tumeurs qui envahissent les tissus adjecents en petits groupes et ceux qui le font en grandes masses de cellules malignes. Finalement, nous avons étudié la signification possible de l’intensité de l’infiltrat à eosinophiles peritumoral
Tropaeolum tuberosum Ruiz & Pav. coleccion de germoplasma de mashua conservada en el Centro Internacional de la Papa (CIP).
Ullucus tuberosus Caldas: colección de germoplasma de ullucu conservada en el Centro Internacional de la Papa (CIP).
El presente catálogo contiene información pasaporte, datos de caracterización morfológica y ploidía para 432 accesiones de ulluco mantenidas en el banco de germoplasma del CIP. Para ilustrar mejor los datos de caracterización morfológica, cada accesión está acompañada de un set de fotografías que incluye la parte aérea de la planta, los tubérculos, las flores y una muestra lista para herborizar conformada por un tallo con sus hojas y flores. La información pasaporte es complementada con mapas ilustrados que muestran el lugar de colecta de cada accesión
Derivative expansion and large gauge invariance at finite temperature
We study the 0+1 dimensional Chern-Simons theory at finite temperature within
the framework of derivative expansion. We obtain various interesting relations,
solve the theory within this framework and argue that the derivative expansion
is not a suitable formalism for a study of the question of large gauge
invariance.Comment: 12 pages, Late
The IGEX experiment revisited: a response to the critique of Klapdor-Kleingrothaus,Dietz, and Krivosheina
This paper is a response to the article "Critical View to" the IGEX
neutrinoless double-beta decay experiment..."published in Phys. Rev.D, Volume
65 (2002) 092007," by H.V.Klapdor-Kleingrothaus, A. Dietz, and I.V.Krivosheina,
published as preprint hep-ph/0403056. The criticisms are confronted, and the
questions raised are answered. We demonstrate that the lower limit quoted by
IGEX, for the half life of Ge-76 neutrinoless double beta decay, 1.57x10**25 y,
is correct and that there was no "arithmetical error"-as claimed in the "
Critical Review" article
Modelado de ondas no lineales en fotónica, plasmónica y átomos fríos
We review the present status of the different lines of research in the area of Photonics at the
Interdisciplinary Modeling Group, InterTech (www.intertech.upv.es) paying special attention to new
topics that we have recently incorporated to our research interests: temporal solitons and design of
supercontinuum generation, plasmon-soliton interaction, nonlinear effects of the quantum
electrodynamics vacuum, and, finally, cold atoms in the mean-field and quantum regimes.En este artículo presentamos el estado actual de las diferentes líneas de investigación desarrolladas
en el área de Fotónica del Grupo de Modelización Interdisciplinar, InterTech (www.intertech.upv.es)
prestando especial atención a aquellas que han sido incorporadas recientemente: solitones
temporales y diseño de la generación de supercontínuo, interacción plasmón-solitón, efectos no
lineales del vacío en electrodinámica cuántica y, finalmente, átomos fríos en el régimen de campo
medio y en el régimen cuántico.Ciencias Experimentale
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