3,266 research outputs found
«Orthopteroidea» españoles con estatus de protección estricta.
Apteromands aptera (Fuente, 1893) es el único mántido endémico español incluido en el Apéndice II del Convenio de Berna y en los Anexos U y IV de la Directiva Habitats, y ratificado por la Legislación española como especie estrictamente protegida desde 1988. Este trabajo recoge, en relación con la consulta realizada a uno de los autores por la European Invertebrate Survey, los datos conocidos hasta el momento sobre esta especie, aportando, además, imágenes y mapas de distribución.Apteromands aptera (Fuente, 1893) es el único mántido endémico español incluido en el Apéndice II del Convenio de Berna y en los Anexos U y IV de la Directiva Habitats, y ratificado por la Legislación española como especie estrictamente protegida desde 1988. Este trabajo recoge, en relación con la consulta realizada a uno de los autores por la European Invertebrate Survey, los datos conocidos hasta el momento sobre esta especie, aportando, además, imágenes y mapas de distribución
Constructing networks of defects with scalar fields
We propose a new way to build networks of defects. The idea takes advantage
of the deformation procedure recently employed to describe defect structures,
which we use to construct networks, spread from small rudimentary networks that
appear in simple models of scalar fields.Comment: 5 pages, 4 figures, version with new title, motivations and
references, to appear in PL
Treatment of patients with multiple myeloma progressing on frontline-therapy with lenalidomide
Over the last years, there has been great progress in the treatment of multiple myeloma with many new agents and combinations having been approved and being now routinely incorporated into treatment strategies. As a result, patients are experiencing benefits in terms of survival and better tolerance. However, the multitude of treatment options also presents a challenge to select the best options tailored to the specific patient situation. Lenalidomide is increasingly being used as part of frontline therapy in newly diagnosed multiple myeloma. This agent is typically administered until disease progression. It is currently unclear, how to best manage patients, who relapse while receiving lenalidomide as part of their frontline treatment. We conducted a review to summarize the available evidence in this setting. Our summary shows that there are very few data from current trials testing new combinations based on carfilzomib, pomalidomide, or daratumumab that address this specific patient population. Our review is aimed to summarize the available evidence to assist treatment decision making and to raise awareness of this lack of data to encourage further analyses and the incorporation of sequencing questions in future trial designs
Spherically Symmetric and Rotating Wormholes Produced by Lightlike Branes
Lightlike p-branes (LL-branes) with dynamical (variable) tension allow simple
and elegant Polyakov-type and dual to it Nambu-Goto-like world-volume action
formulations. Here we first briefly describe the dynamics of LL-branes as test
objects in various physically interesting gravitational backgrounds of black
hole type, including rotating ones. Next we show that LL-branes are the
appropriate gravitational sources that provide proper matter energy momentum
tensors in the Einstein equations of motion needed to generate traversable
wormhole solutions, in particular, self-consistent cylindrical rotating
wormholes, with the LL-branes occupying their throats. Here a major role is
being played by the dynamical LL-brane tension which turns out to be negative
but may be of arbitrary small magnitude. As a particular solution we obtain
traversable wormhole with Schwarzschild geometry generated by a LL-brane
positioned at the wormhole throat, which represents the correct consistent
realization of the original Einstein-Rosen "bridge" manifold.Comment: 27 pages; important clarifications regarding the meaning of the
original Einstein-Rosen "bridge" construction; an important addition to the
Appendix; acknowledgments adde
Penrose Limits of the Baryonic D5-brane
The Penrose limits of a D5-brane wrapped on the sphere of AdS_5 x S^5 and
connected to the boundary by M fundamental strings, which is dual to the baryon
vertex of the N=4 SU(M) super Yang-Mills theory, are investigated. It is shown
that, for null geodesics that lead to the maximally supersymmetric Hpp-wave
background, the resulting D5-brane is a 1/2-supersymmetric null brane. For an
appropriate choice of radial geodesic, however, the limiting configuration is
1/4-supersymmetric and closely related to the Penrose limit of a flat space
BIon.Comment: LaTeX, 1+18 pages, 1 figure; v2: obvious misquotation of the number
of preserved supersymmetries correcte
Influencia de la fuente y el nivel de glicerina cruda en el pienso sobre los paráemtros productivos en pollos de 1 a 21 dÃas de edad.
Las cantidades de grasas y aceites destinadas a la producción de biodiesel han aumentado en los últimos años a nivel mundial (National Biodiesel Board, 2012). La glicerina cruda (Gly) es un subproducto de la industria del biodiesel que contiene cantidades variables de humedad, cenizas y glicerol. La Gly es una fuente atractiva de energÃa que se utiliza actualmente como sustituto parcial del grano de cereal en dietas para avicultura y otras
especies domésticas (Swiatkiewicz y Koreleski, 2009). Se estima que el nivel máximo de Gly a utilizar en piensos para broilers varÃa entre 5 y 10% (Cerrate et al., 2006). A estos niveles de inclusión, la Gly no presenta efecto negativo alguno sobre la salud o los parámetros productivos de las aves. Sin embargo, la calidad de las Gly comerciales varÃa en función de su origen, composición y proceso de obtención. El objetivo de este estudio fue evaluar el efecto de la fuente y el nivel de glicerina cruda en el pienso sobre el rendimiento productivo en pollos de engorde de 1 a 21 dÃas de edad
Inluence of source and level of glycerin in the diet on growth performance, liver characteristics, and nturient digestibility in broilers from hatching to 21 days of age
The influence of source and level of inclusion of raw glycerin (GLYC) in the diet on growth performance, digestive traits, total tract apparent retention (TTAR), and apparent ileal digestibility of nutrients was studied in broilers from 1 to 21 d of age. There was a control diet based on corn and soybean meal and 8 additional diets that formed a 2 × 4 factorial with 2 sources of GLYC and 4 levels of inclusion (2.5, 5.0, 7.5, and 10%). The GLYC used were obtained from the same original batch of soy oil that was dried under different processing conditions and contained 87.5 or 81.6% glycerol, respectively. Type of processing of the GLYC did not affect any of the variables studied except DM and organic matter retention (P < 0.05) that was higher for the 87.5% glycerol diet. From d 1 to 21, feed conversion ratio (FCR) improved linearly (L, P ≤ 0.01) as the GLYC content of the diet increased, but ADG was not affected. On d 21, the relative weight (% BW) of the liver and the digestive tract increased (L, P < 0.01) as the level of GLYC in the diet increased, but lipid concentration in the liver was not affected. The TTAR of DM and organic matter increased quadratically (Q, P < 0.05) and the AMEn content of the diet increased linearly (L, P < 0.01) with increases in dietary GLYC. Also, the apparent ileal digestibility of DM (L, P < 0.05; Q, P = 0.07) and gross energy (L, P < 0.01) increased as the GLYC content of the diet increased. It is concluded that raw GLYC from the biodiesel industry can be used efficiently, up to 10% of the diet, as a source of energy for broilers from 1 to 21 d of age and that the energy content of well-processed raw GLYC depends primarily on its glycerol content
New Two-Dimensional Integrable Quantum Models from SUSY Intertwining
Supersymmetrical intertwining relations of second order in the derivatives
are investigated for the case of supercharges with deformed hyperbolic metric
. Several classes of particular solutions of these
relations are found. The corresponding Hamiltonians do not allow the
conventional separation of variables, but they commute with symmetry operators
of fourth order in momenta. For some of these models the specific SUSY
procedure of separation of variables is applied.Comment: 18 page
Towards a FPGA-controlled deep phase modulation interferometer
Deep phase modulation interferometry was proposed as a method to enhance
homodyne interferometers to work over many fringes. In this scheme, a
sinusoidal phase modulation is applied in one arm while the demodulation takes
place as a post-processing step. In this contribution we report on the
development to implement this scheme in a fiber coupled interferometer
controlled by means of a FPGA, which includes a LEON3 soft-core processor. The
latter acts as a CPU and executes a custom made application to communicate with
a host PC. In contrast to usual FPGA-based designs, this implementation allows
a real-time fine tuning of the parameters involved in the setup, from the
control to the post-processing parameters.Comment: Proceedings of the X LISA Symposium, Gainesville, May 18-23, 201
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