Quantum diffusion on a cyclic one dimensional lattice

The quantum diffusion of a particle in an initially localized state on a cyclic lattice with N sites is studied. Diffusion and reconstruction time are calculated. Strong differences are found for even or odd number of sites and the limit N->infinit is studied. The predictions of the model could be tested with micro - and nanotechnology devices.Comment: 17 pages, 5 figure

3D DIGITAL HOLOGRAPHIC INTERFEROMETRY AND SPECTRAL OPTICAL COHERENCE TOMOGRAPHY FOR THE MEASUREMENT OF STRAIN IN METALLIC OBJECTS AND PHASE IN BIOLOGICAL TISSUES

"The present work is devoted to two optical non destructive tests as digital holographic interferometry and spectral optical coherence tomography. Both techniques were successfully applied to detect strain and phase in metallic and organic samples respectively. The mainly differences between these two techniques is their penetration factor. Three-dimensional digital holography was applied for the detection of surface displacements in metallic objects. Modeling displacements with this technique make it possible to generate a surface strain map over the whole field of view of the system. In this particular case, the optical set up uses illuminating beams to irradiate the object from three different directions resulting that all three x, y and z displacement components can be independently analyzed and used to find the strain gradients on the surface of the sample. Furthermore, separation of the surface strain gradients as function of x and y was achieved with the same optical system. Results show the conversion of the complete surface displacement field into a surface strain field with no extra hardware. The second non destructive test is the spectral optical coherence tomography used to measure subsurface optical phase within a transparent (pig cornea) media. The system provides displacement maps within a 2-D slice extending into the sample. The proof of principle of the method was done with low cost components in a system with no moving parts set in a novel data processing for this kind of information. The method was used to explore an organic sample in order to get optical phase information within the sample. Results showed a system high sensitivity and its viability for sub-surface inspection.

Violence against women. The aggressor's profile: approaches to evaluation of the risk

La Administración de Justicia es cada vez más consciente de la importancia de que la pericia médica en los casos de violencia familiar se haga de forma completa, rigurosa y científica. Por ello, desde hace seis años pusimos nuestra experiencia y conocimientos a su servicio creando la "Unidad de Valoración Médico-forense de Violencia Familiar" en la Universidad de Granada, al objeto de realizar una pericia médico-legal integral en cada caso de violencia, dirigida a establecer una valoración global y completa de la víctima, del agresor y de los hijos, cuando los hay. En el presente trabajo se describe la sistemática utilizada en la evaluación psicológico-psiquiátrica de las partes involucradas en el problema y los resultados que nos permiten establecer los diversos perfiles de maltratadores. La comparación entre los resultados obtenidos en el perfil de personalidad de la víctima y del agresor permite comprender cómo surge la dinámica de la violencia y cuáles son los detonantes del comportamiento maltratador, así como el nivel de riesgo que este representa para aquélla. Esta valoración integral puede proporcionar al juez, al fiscal y a los letrados una información rigurosa y objetiva sobre la que apoyar la mejor decisión para todos los implicados y las medidas a adoptar en cada caso.Judges and Justice more and more realise the importance of medical expert reports in cases of domestic violence being made in a complete, rigorous and scientific way. For this reason, for the last six years we have placed our experience and knowledge at their service by creating the "Forensic Evaluation of Domestic Violence Unit" in the University of Granada. Our purpose was to carry out integral medical expertise in each case of violence, trying to establish a global and complete evaluation, of both victim and aggressor (and their children, when there are any). This paper describes the systematic protocol we have used for the psychological-psychiatric evaluation of the parts involved in the problem, as well as the obtained results which allow as to establish the diverse aggressor profiles. The comparison between the results for the profile of victim and aggressor personalities allows a comprehension of how the dynamics of the violence arises and what is the trigger for the aggressive behavior, as well as the level of risk that the aggressor represents for the victim. This global evaluation can provide to judge, prosecutor, and lawyers rigorous and objective information as a basis for the best decision for both victim and aggressor as well as for the measures to adopt in each cas

Impact of the representation of the infiltration on the river flow during intense rainfall events in JULES

Intense rainfall can lead to flash flooding and may cause disruption, damage and loss of life. Since flooding from intense rainfall (FFIR) events are of a short duration and occur within a limited area, they are generally poorly predicted by Numerical Weather Prediction (NWP) models. This is because of the high spatio-temporal resolution required and because of the way the convective rainfall is described in the model. Moreover, the hydrological process descriptions of Land Surface Models (LSMs) are not necessarily suitable to deal with cases of intense rainfall. In this study different representations of infiltration into the soil were developed in the JULES land surface scheme with the aim of improving prediction of the amount of surface runoff, and thus ultimately river flow. Infiltration and surface runoff are explored in a test case of intense rainfall with a variable maximum infiltration. The modelled hydraulic conductivity profile is modified with depth to reduce the rate of outgoing fluxes. The new infiltration scheme is then applied to different UK catchments. The resulting river flow is evaluated against a benchmark river flow calculated using default infiltration in JULES and also observations. The results demonstrate improved representation of the highest flows with this new variable maxiumum infiltration scheme in some catchments but limited improvement elsewhere. This scheme shows best improvement in the wettest areas of the UK where the annual mean precipitation is above 1200 mm. This work highlights the requirement for substantial further work on the hydrological process representation in JULES

Effect of Xylanase on the Technological Behaviour of Wheat Flours

The objective of this work is to investigate the effect of enzyme xylanase on the technological behaviour of wheat flours, particularly in alveograms and bread making, using two flour qualities and two bread making methods. The enzyme used was xylanase from Bacillus subtilis which is sold for mainly for baking applications. Breads were made applying both the French and the pan bread methods. Experts scored the external and internal characteristics of breads. Increase in enzyme concentration produced a decrease in maximum pressure (P) and tensile strength/extensibility (P/L) but deformation energy (W) remained almost constant in the alveogram. This means that the water released by the hydrolysis of insoluble pentosans has reduced the tenacity of the dough. The higher the enzyme concentration, the lower the dough consistency during kneading. Besides, the greatest improvement of quality was produced when xylanase was added to low quality flour and when the French type bread making method was applied.Fil: Osella, C.. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología de Los Alimentos; ArgentinaFil: de la Torre, M. A. G.. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología de Los Alimentos; ArgentinaFil: Erben, Melina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología de Los Alimentos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe; ArgentinaFil: Gallardo, A.. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología de Los Alimentos; ArgentinaFil: Sanchez, H.. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología de Los Alimentos; Argentin

A charge density wave-like instability in a doped spin-orbit assisted weak Mott insulator

Layered perovskite iridates realize a rare class of Mott insulators that are predicted to be strongly spin–orbit coupled analogues of the parent state of cuprate high-temperature superconductors. Recent discoveries of pseudogap, magnetic multipolar ordered6 and possible d-wave superconducting phases in doped Sr_2IrO_4 have reinforced this analogy among the single layer variants. However, unlike the bilayer cuprates, no electronic instabilities have been reported in the doped bilayer iridate Sr_3Ir_2O_7. Here we show that Sr_3Ir_2O_7 realizes a weak Mott state with no cuprate analogue by using ultrafast time-resolved optical reflectivity to uncover an intimate connection between its insulating gap and antiferromagnetism. However, we detect a subtle charge density wave-like Fermi surface instability in metallic electron doped Sr_3Ir_2O_7 at temperatures (T_(DW)) close to 200 K via the coherent oscillations of its collective modes, which is reminiscent of that observed in cuprates. The absence of any signatures of a new spatial periodicity below T_(DW) from diffraction, scanning tunnelling and photoemission based probes suggests an unconventional and possibly short-ranged nature of this density wave order

Monte Carlo studies of the intrinsic time-domain response of nanoscale three-branch junctions

We present a Monte Carlo time-domain study of nanostructured ballistic three-branch junctions (TBJs) excited by both step-function and Gaussian picosecond transients. Our TBJs were based on InGaAs 2-dimensional electron gas heterostructures and their geometry followed exactly the earlier experimental studies. Time-resolved, picosecond transients of both the central branch potential and the between-the-arms current demonstrate that the bandwidth of the intrinsic TBJ response reaches the THz frequency range, being mainly limited by the large-signal, intervalley scattering, when the carrier transport regime changes from ballistic to diffusive

Co-exposure of the organic nanomaterial fullerene C60 with benzo[a]pyrene in Danio rerio (zebrafish) hepatocytes: Evidence of toxicological interactions

Compounds from the nanotechnology industry, such as carbon-based nanomaterials, are strong candidates to contaminate aquatic environments because their production and disposal have exponentially grown in a few years. Previous evidence shows that fullerene C60, a carbon nanomaterial, can facilitate the intake of metals or PAHs both in vivo and in vitro, potentially amplifying the deleterious effects of these toxicants in organisms. The present work aimed to investigate the effects of fullerene C60 in a Danio rerio (zebrafish) hepatocyte cell lineage exposed to benzo[a]pyrene (BaP) in terms of cell viability, oxidative stress parameters and BaP intracellular accumulation. Additionally, a computational docking was performed to investigate the interaction of the fullerene C60 molecule with the detoxificatory and antioxidant enzyme πGST. Fullerene C60 provoked a significant (p 0.05) alter the enzyme activity when added to GST purified extracts from the zebrafish hepatocyte cells. These results show that fullerene C60 can increase the intake of BaP into the cells, decreasing cell viability and impairing the detoxificatory response by phase II enzymes, such as GST, and this latter effect should be occurring at the transcriptional level.Fil: Ribas Ferreira, Josencler L.. Universidade Federal do Rio Grande do Sul; BrasilFil: Lonné, María Noelia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: França, Thiago A.. Universidade Federal do Rio Grande do Sul; BrasilFil: Maximilla, Naiana R.. Universidade Federal do Rio Grande do Sul; BrasilFil: Lugokenski, Thiago H.. Universidade Federal de Santa Maria. Departamento de Química; BrasilFil: Costa, Patrícia G.. Universidade Federal do Rio Grande do Sul; BrasilFil: Fillmann, Gilberto. Universidade Federal do Rio Grande do Sul; BrasilFil: Soares, Félix A.. Universidade Federal de Santa Maria. Departamento de Química; BrasilFil: de la Torre, Fernando Roman. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; ArgentinaFil: Monserrat, José María. Universidade Federal do Rio Grande do Sul; Brasil. Instituto Nacional de Ciência e Tecnologia de Nanomateriais de Carbono; Brasi

Study of idfferential protein expression in healthy human skeletal muscles using electrophoresis bidimentional

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