Transient Propagation and Scattering of Quasi-Rayleigh Waves in Plates: Quantitative comparison between Pulsed TV-Holography Measurements and FC(Gram) elastodynamic simulations

We study the scattering of transient, high-frequency, narrow-band quasi-Rayleigh elastic waves by through-thickness holes in aluminum plates, in the framework of ultrasonic nondestructive testing (NDT) based on full-field optical detection. Sequences of the instantaneous two-dimensional (2-D) out-of-plane displacement scattering maps are measured with a self-developed PTVH system. The corresponding simulated sequences are obtained by means of an FC(Gram) elastodynamic solver introduced recently, which implements a full three-dimensional (3D) vector formulation of the direct linear-elasticity scattering problem. A detailed quantitative comparison between these experimental and numerical sequences, which is presented here for the first time, shows very good agreement both in the amplitude and the phase of the acoustic field in the forward, lateral and backscattering areas. It is thus suggested that the combination of the PTVH system and the FC(Gram) elastodynamic solver provides an effective ultrasonic inspection tool for plate-like structures, with a significant potential for ultrasonic NDT applications.Comment: 46 pages, 16 figures, corresponding author Jos\'e Carlos L\'opez-V\'azquez, [email protected]. Changes: 1st, 4th, 5th paragraphs (intro), 3rd, 4th paragraphs (sec. 4); [59-60] cited only in appendixes; old ref. [52] removed; misprints corrected in the uncertainty of c_L (subsec. 3.1), citation to fig. 10 (sec. 4), size of images (caption fig.15); reference to Lam\'e constants removed in subsec. 3.

La antropología desde el derecho: derecho consuetudinario gallego y etnografía

RESUMEN]Estudio mediante el que se pretenden poner de manifiesto las necesarias interrelaciones que se producen entre la ciencia etnográfica y la jurídica, especialmente a los efectos de la posible determinación, conocimiento y estudio, tanto histórico como actual, de las diversas peculiaridades jurídicas de carácter consuetudinario existentes en el específico caso del ordenamiento jurídico civil gallego[ABSTRACT]With this essay we try to unveil some necessary interrelations between ethnographic enquiries and legal studies. They are especially relevant to disclose the customary features of the present Galician civil law. This is done taking into account the meaning of ethnographic results and historical analysis for legal scholar

Potential of bacteriophage K as an antimicrobial strategy against biofilms of Staphylococcus aureus in the food industry

1 poster presented at the 24th International ICFMH Conference, Food Micro 2014, 1-4 Septembre, Nantes, FranceThe potential of phage K in the removal and prevention of Staphylococcus aureus biofilms on stainless steel surfaces was examined. The host range of the phage was tested on 18 strains from the food industry. Two out of six sensitive strains were selected for study of biofilms. Immature 6-h-old biofilms were challenged wfth a wide range of multipticlties of infection {MOl, 0.01-500) for 18 h at 25ºc. A noticeable effect on cell number was appreciated at MOIs≥10, but no effect was detected at lower MOis. Subsequently, 24 h-old biofilms (with a higher cell density and a more dense extracellular matrix) were challenged too at MOIs between 0.01-3.0 for 24 hat 25ºc. Again, a significant effect was only found at MOls > 1. The effectiveness in the prevention of biofilm formation was examined by Infecting planktonlc cultures of S. aureus with sub-lethal and lethal doses of phage K (MOIs 1-10-7-10.0). A notable effect on cell number and biofilm biomass was observed from MOIs >1·10-5. The potential of phage K as a tool for biohygienization in the food Industry acting specifically against biofilms of S. aureus was thus shown. However, neither biofilm cells were completely removed nor biofilm formation was totally prevented, and a sub-population of live cells was left In both cases As a result, the effectiveness of two co-adjuvant-based strategies was subsequently assessed. Combining DNase (0,1-10 mg/ml) with phage K (MOl of 0.3-3.0) did not show an additional effect on the removal of 24 h-old-biofilms at 25°C. A 30 min pre-treatment at 37ºc aimed to enhance DNase activity also had not effect. DNase did not show any effects by itself either. In contrast, combining cis-2-decenoic acid {1 - 100 nM) with phage K (MOl of 0.03-0.3) seemed to show some effects on biofilmsN

VO2max test is not altered by a submaximum exercise

INTRODUCTION: The Maximum Oxygen Consumption (VO2max) and Ventilatory anaerobic threshold (VT), is measured using progressive exercise protocol until exhaustion, these results can be affected by a previous submaximum exercise. PURPOSE: The purpose of this study was evaluate the reproducibility of maximum effort test after a submaximum exercise. METHODS: 19 subjects (mean ± SD; age, 21.8±2.5 years; body mass, 71.0±10.6 and height, 175.2±8.1) participated in this study. During two days of assessment separately for at least 24h recovery subjects performed the following tests: Day 1 a maximum effort test and a submaximum exercise at 80% of VO2max. Day 2 the order of the tests performed on day 1 was reversed. RESULTS: No significant differences were found in the VO2max or ventilatory thresholds determined in both tests of maximum effort. (VO2max 54.2 ± 6.8vs 55.1 ± 6.4 (ml·kg-1·min-1), ICC; 0.91, CV; 3.9 ± 2.1); (VO2 RCT 45.6 ± 6.4vs 45.9 ± 5.7 (ml·kg-1·min-1) ICC; 0.96, CV; 3.0 ± 2.1)( VO2 VT 35.6 ± 4.7vs 35.6 ± 4.7 (ml·kg-1·min-1) ICC; 0.87, CV; 4.9 ± 3.9). CONCLUSION: The results of the present study showed a high reproducibility of the data obtained when maximum effort test is assessed (i.e., VO2max and ventilatory threshold), regardless the submaximum exercise

A possible flyby anomaly for Juno at Jupiter

[EN] In the last decades there have been an increasing interest in improving the accuracy of spacecraft navigation and trajectory data. In the course of this plan some anomalies have been found that cannot, in principle, be explained in the context of the most accurate orbital models including all known effects from classical dynamics and general relativity. Of particular interest for its puzzling nature, and the lack of any accepted explanation for the moment, is the flyby anomaly discovered in some spacecraft flybys of the Earth over the course of twenty years. This anomaly manifest itself as the impossibility of matching the pre and post-encounter Doppler tracking and ranging data within a single orbit but, on the contrary, a difference of a few mm/s in the asymptotic velocities is required to perform the fitting. Nevertheless, no dedicated missions have been carried out to elucidate the origin of this phenomenon with the objective either of revising our understanding of gravity or to improve the accuracy of spacecraft Doppler tracking by revealing a conventional origin. With the occasion of the Juno mission arrival at Jupiter and the close flybys of this planet, that are currently been performed, we have developed an orbital model suited to the time window close to the perijove. This model shows that an anomalous acceleration of a few mm/s(2) is also present in this case. The chance for overlooked conventional or possible unconventional explanations is discussed. (C) 2018 COSPAR. Published by Elsevier Ltd. All rights reserved.Acedo Rodríguez, L.; Piqueras, P.; Moraño Fernández, JA. (2018). A possible flyby anomaly for Juno at Jupiter. Advances in Space Research. 61(10):2697-2706. https://doi.org/10.1016/j.asr.2018.02.037S26972706611

Predictive control of a three-phase UPS inverter using two steps prediction horizon

A Model Predictive Control scheme is used for voltage control in a three-phase inverter with output LC filter. The controller uses a model of the system to calculate predictions of the future value of the system variables for a given voltage vector sequence. A cost function considering the voltage errors is defined and the voltage vectors that minimize it are selected and applied in the converter. The effect of considering different number of prediction steps is studied in this work in terms of THD. Simulation results for one and two prediction steps are presented and compared

High-performance motor drives

This article reviews the present state and trends in the development of key parts of controlled induction motor drive systems: converter topologies, modulation methods, as well as control and estimation techniques. Two- and multilevel voltage-source converters, current-source converters, and direct converters are described. The main part of all the produced electric energy is used to feed electric motors, and the conversion of electrical power into mechanical power involves motors ranges from less than 1 W up to several dozen megawatts

Diagnosticand pronostic utility of serum microrna-21 in colorectal cancer

Los microRNAs son estructuras moleculares de 20-22 nucleótidos con actividad post-transcripional que están implicados en la carcinogénesis mediante una regulación genética post-transcripcional. Presentamos un estudio prospectivo donde se determina la expresión sérica de microRNA-21 en pacientes con diagnóstico de adenocarcinoma de colon. MATERIAL Y MÉTODOS. Estudio de cohorte prospectivo de al menos 100 pacientes con diagnóstico de adenocarcinoma de colon, y de al menos 60 pacientes con apendicitis aguda como grupo control. Se realizó el análisis de microRNA-21 sérico mediante PCR de las muestras sanguíneas de los pacientes obtenidas de forma preoperatoria. RESULTADOS. La comparación de la expresión del microRNA-21 sérico fue mayor en los pacientes con cáncer colorrectal que en los pacientes del grupo control, siendo el área bajo la curva de 0,603. En el análisis univariante, la expresión del miR- 21 se relaciona de forma estadísticamente significativa con la recidiva local (p=0,025) y con la mortalidad (p=0,029). En el análisis multivariante también se puso de manifiesto que las expresiones mayores (sobreexpresiones) de miR-21 se relacionaban con una reducción del riesgo derecidiva del 51%, mientras que dicha sobreexpresión se relacionaba con una reducción de mortalidad del 50%. CONCLUSIONES. La expresión del microRNA-21 sérico podría ser considerado como un potencial marcador diagnóstico para el cáncer colorrectal. La expresión sérica del microRNA-21 se correlaciona con la recidiva y mortalidad en el cáncer colorrectal. Nuestros resultados sugieren que el miR-21 sérico es un prometedor marcador diagnóstico y pronóstico, y pone de manifiesto su potencial utilidad clínica en el cáncer colorrectalMicroRNAs (miRNAs) are small, noncoding RNAs that are involved in carcinogenesis through postranscriptional gene regulatory activity. Few studies have focused on the detection of miR-21 in serum rather than in tissue. The current study aimed to measure serum miR-21 expression levels and to evaluate their association with the outcome of colorectal cancer (CRC). METHODS. Blood samples were collected from almost 100 CRC patients undergoing surgery with curative intent, and almost 60 control patients. The expression levels of miR-21 were measured using a quantitative reverse transcription polymerase chain reaction (qRT-PCR). RESULTS. Serum microRNA-21 expression was higher in colorectal cancer patients than in control patients, with a ROC curve of 0.603. A univariate analysis revealed that lower expression levels of serum miR-21 were associated with higher local recurrence (p=0.025) and mortality (p=0.029). A logistic regression analysis demonstrated that the relative overexpression of miR-21 (expression >1) was associated with a 51% reduction in the risk of recurrence. A Cox regression analysis identified that a relative increase in miR-21 expression (>1) was associated with a 50% reduction in the risk of mortality CONCLUSIONS. Serum microRNA-21 expression could be considered as a potential diagnostic marker for colorectal cancer. The expression level of serum miR-21 correlates with the recurrence and mortality of CRC patients. Our results suggest that circulating serum miR-21 is a promising diagnostic and prognostic tumour marker, and they highlight the potential clinical utility of miR-21 in colorectal cancerEl presente estudio ha sido financiado con la ayuda otorgada por la Fundación para la Investigación Sanitaria en Castilla La Mancha (FISCAM) y por la Fundación Mutua Madrileña Investigación Médic

Relationship between egg quality and fatty acid content of various turbot broodstocks (Scophthalmus maximus L.)

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Integral measurement of the 12C(n, p)12B reaction up to 10 GeV

The integral measurement of the 12C(n, p)12B reaction was performed at the neutron time-offlight facility n TOF at CERN. The total number of 12B nuclei produced per neutron pulse of the n TOF beam was determined using the activation technique in combination with a time-of-flight technique. The cross section is integrated over the n TOF neutron energy spectrum from reaction threshold at 13.6 MeV to 10 GeV. Having been measured up to 1 GeV on basis of the 235U(n, f) reaction, the neutron energy spectrum above 200 MeV has been re-evaluated due to the recent extension of the cross section reference for this particular reaction, which is otherwise considered a standard up to 200 MeV. The results from the dedicated GEANT4 simulations have been used to evaluate the neutron flux from 1 GeV up to 10 GeV. The experimental results related to the 12C(n, p)12B reaction are compared with the evaluated cross sections from major libraries and with the predictions of different GEANT4 models, which mostly underestimate the 12B production. On the contrary, a good reproduction of the integral cross section derived from measurements is obtained with TALYS-1.6 calculations, with optimized parameters.European Atomic Energy Communitys (Euratom) Seventh Framework Programme FP7/2007-2011-CHANDA (No. 605203)Narodowe Centrum Nauki (NCN)-UMO-2012/04/M/ST2/00700Croatian Science Foundation-No. 168