Tumores óseos del pie

El manejo de los tumores óseos es difícil, debido a sus diferentes formas y comportamientos y a su baja incidencia. El pie no escapa a este axioma, ya que los tumores en esta región anatómica son particularmente infrecuentes y pueden mostrar un comportamiento clínico y radiológico diferente del que evidencian en otras regiones del esqueleto. Los autores revisan, en primer lugar, los aspectos generales de los tumores óseos del pie, considerando su epidemiología, el proceder diagnóstico y pronóstico y las opciones terapéuticas, para luego pasar a examinar las particularidades regionales e histológicas de estas neoplasias en relación con su tratamiento.The management of bone tumours is difficult, both because of their varying forms and behaviours and because of their low incidence. The foot is no exception to this axiom, as tumours in this particular anatomic region are particularly infrequent and may exhibit a clinical and radiological behaviour completely at variance to that in other skeletal regions. The authors first review the general aspects of the bobe tumours of the foot, considering their epidemiology, the diagnostic procedure and prognosis and the therapeutic options, and then examine the regional and histologic peculiaritiesof these neoplasms as related to their therapeutic management

Measurement method of optical properties of ex vivo biological tissues of rats in the near-infrared range

An optical fiber-based supercontinuum setup and a custom-made spectrophotometer that can measure spectra from 1100 to 2300 nm, are used to describe attenuation properties from different ex vivo rat tissues. Our method is able to differentiate between scattering and absorption coefficients in biological tissues. Theoretical assumptions combined with experimental measurements demonstrate that, in this infrared range, tissue attenuation and absorption can be accurately measured, and scattering can be described as the difference between both magnitudes. Attenuation, absorption, and scattering spectral coefficients of heart, brain, spleen, retina, and kidney are given by applying these theoretical and experimental methods. Light through these tissues is affected by high scattering, resulting in multiple absorption events, and longer wavelengths should be used to obtain lower attenuation values. It can be observed that the absorption coefficient has a similar behavior in the samples under study, with two main zones of absorption due to the water absorption bands at 1450 and 1950 nm, and with different absolute absorption values depending on the constituents of each tissue. The scattering coefficient can be determined, showing slight differences between retina and brain samples, and among heart, spleen and kidney tissues

Radiological Study of Water for Human Use and Consumption in Rural Areas of the Central Zone of the State of Veracruz, Mexico

A study and spatiotemporal radiological characterization of water for human use and consumption in the main rural populations of the center of the State of Veracruz was carried out, covering 22 municipalities. The objective was to estimate the annual effective dose as a function of the concentration of gross alpha and beta activity. For this purpose, a low background proportional flux detection system calibrated with NIST-traceable radioactive standards was used. Sampling included only wells, springs, and lagoons in rural areas that supply water to these populations. The decision was based on the fact that these do not have a physicochemical treatment and was carried out during the dry and rainy seasons, which became factors of impact on the radiological material. The analysis included the results of 195 samples from 22 municipalities which showed ranges in the gross alpha of 0.052-0.95 BqL-1 with a mean of 0.376 ±0.101BqL-1 and a gross beta of 0.034-1.48 BqL-1 with a mean of 0.389 ±0.108 BqL-1. The comparison of the values obtained with respect to those of other countries and their complement with analysis of variance showed that there was a significant difference, particularly, for the results of gross alpha in the municipality of Alto Lucero de Gutierrez Barrios and gross beta in Nautla and Tecolutla in dry and rainy seasons (at a probability of p≤0.05 with the Tukey-Kramer HSD statistical test). A correlation between gross alpha and gross beta was also performed with an r of -0.18 and -0.44 in dry and rainy seasons. This means that among the radionuclides, the major sources of beta radiation are uranium and thorium decay series radionuclides. For the determination of gross alpha, the municipalities in the mountainous zones showed lower values of this activity than the municipalities in the coastal zone. Gross alpha activity values of 0.95 ± 0.11 BqL-1 were detected in the municipality of Alto Lucero de Gutiérrez Barrios in the locality of Arroyo Agrio, which exceeded the limit of the Official Mexican Standard

Perfil microbiológico y sensibilidad a antibióticos de microorganismos aislados de infecciones conjuntivales en el Instituto de Oftalmología Fundación Conde de Valenciana. Reporte del año 2012

ResumenIntroducciónLa conjuntiva es el tejido ocular que se infecta con mayor frecuencia. Los agentes patógenos más frecuentes de la conjuntivitis suelen ser los virus y las bacterias. El uso indiscriminado de antibióticos de amplio espectro para tratar la conjuntivitis ha generado microorganismos resistentes.ObjetivoIdentificar los microorganismos más frecuentes aislados de muestras de origen conjuntival y conocer su susceptibilidad antibiótica.Material y métodosRevisión retrospectiva de cultivos provenientes de raspados conjuntivales obtenidos durante el 2012.ResultadosSe obtuvieron 44 muestras de origen conjuntival. Estas provinieron de 21 varones y 23 mujeres. La mediana (25%, 75%) de la edad fue 62 años (39-68). El cultivo fue positivo en 13 de las muestras obtenidas, identificándose 5 microorganismos diferentes. Staphylococcus epidermidis fue el microorganismo aislado con mayor frecuencia (9 cepas). Todas las cepas de S. epidermidis fueron sensibles a vancomicina, gentamicina, cefotaxima, moxifloxacino y ofloxacino. La mayoría de las cepas de S. epidermidis (6/9) mostraron resistencia a múltiples antibióticos.ConclusionesStaphylococcus epidermidis fue el microorganismo aislado con mayor frecuencia en muestras provenientes de infecciones conjuntivales. Todas las cepas de S. epidermidis fueron sensibles a vancomicina, gentamicina y moxifloxacino y la mayoría de ellas fueron multirresistentes a los antibióticos en evaluación.AbstractIntroductionThe conjunctiva is the tissue of the eye that gets infected with more frequency. The most common pathogens of conjunctivitis are viruses and bacteria. The indiscriminate use of broad-spectrum antibiotics to treat conjunctivitis generated resistant microorganisms.ObjectiveIdentify the most common microorganisms isolated from samples of conjunctival origin and know their antibiotic susceptibility.Material and methodsRetrospective review of culture from conjunctival swabs obtained during 2012.ResultsWe collected 44 samples of conjunctival origin. They came from 21 males and 23 women. The median (25%, 75%) of age was 62 years (39-68). The culture was positive in 13 samples, identifying five different microorganisms. Staphylococcus epidermidis was the most common isolated microorganism (9 strains). All strains of S. epidermidis were sensitive to vancomycin, gentamicin, cefotaxime, ofloxacin and moxifloxacin. The multiple antibiotic resistance was identified in the majority of strains of S. epidermidis (6/9).ConclusionsStaphylococcus epidermidis was the most common isolated microorganism from samples of conjuntival infections. All strains of S. epidermidis were sensitive to vancomycin and moxifloxacin and most of them showed multidrug resistance to antibiotics

All-sky Search for High-Energy Neutrinos from Gravitational Wave Event GW170104 with the ANTARES Neutrino Telescope

Advanced LIGO detected a significant gravitational wave signal (GW170104) originating from the coalescence of two black holes during the second observation run on January 4$^{\textrm{th}}$, 2017. An all-sky high-energy neutrino follow-up search has been made using data from the ANTARES neutrino telescope, including both upgoing and downgoing events in two separate analyses. No neutrino candidates were found within $\pm500$ s around the GW event time nor any time clustering of events over an extended time window of $\pm3$ months. The non-detection is used to constrain isotropic-equivalent high-energy neutrino emission from GW170104 to less than $\sim4\times 10^{54}$ erg for a $E^{-2}$ spectrum

The ANTARES Collaboration: Contributions to ICRC 2017 Part I: Neutrino astronomy (diffuse fluxes and point sources)

Papers on neutrino astronomy (diffuse fluxes and point sources, prepared for the 35th International Cosmic Ray Conference (ICRC 2017, Busan, South Korea) by the ANTARES Collaboratio

The ANTARES Collaboration: Contributions to ICRC 2017 Part II: The multi-messenger program

Papers on the ANTARES multi-messenger program, prepared for the 35th International Cosmic Ray Conference (ICRC 2017, Busan, South Korea) by the ANTARES Collaboratio

The ANTARES Collaboration: Contributions to ICRC 2017 Part III: Searches for dark matter and exotics, neutrino oscillations and detector calibration

Papers on the searches for dark matter and exotics, neutrino oscillations and detector calibration, prepared for the 35th International Cosmic Ray Conference (ICRC 2017, Busan, South Korea) by the ANTARES Collaboratio

Search for Multimessenger Sources of Gravitational Waves and High-energy Neutrinos with Advanced LIGO during Its First Observing Run, ANTARES, and IceCube

Astrophysical sources of gravitational waves, such as binary neutron star and black hole mergers or core-collapse supernovae, can drive relativistic outflows, giving rise to non-thermal high-energy emission. High-energy neutrinos are signatures of such outflows. The detection of gravitational waves and high-energy neutrinos from common sources could help establish the connection between the dynamics of the progenitor and the properties of the outflow. We searched for associated emission of gravitational waves and high-energy neutrinos from astrophysical transients with minimal assumptions using data from Advanced LIGO from its first observing run O1, and data from the Antares and IceCube neutrino observatories from the same time period. We focused on candidate events whose astrophysical origins could not be determined from a single messenger. We found no significant coincident candidate, which we used to constrain the rate density of astrophysical sources dependent on their gravitational-wave and neutrino emission processes

The cosmic ray shadow of the Moon observed with the ANTARES neutrino telescope

[EN] One of the main objectives of the ANTARES telescope is the search for point-like neutrino sources. Both the pointing accuracy and the angular resolution of the detector are important in this context and a reliable way to evaluate this performance is needed. In order to measure the pointing accuracy of the detector, one possibility is to study the shadow of the Moon, i.e. the de¿cit of the atmospheric muon ¿ux from the direction of the Moon induced by the absorption of cosmic rays. Analysing the data taken between 2007 and 2016, the Moon shadow is observed with 3.5¿ statistical signi¿cance. The detector angular resolution for downward-going muons is 0.73¿ ±0.14¿. The resulting pointing performance is consistent with the expectations. An independent check of the telescope pointing accuracy is realised with the data collected by a shower array detector onboard of a ship temporarily moving around the ANTARES location.The authors acknowledge the financial support of the funding agencies: Centre National de la Recherche Scientifique (CNRS), Commissariat a l'energie atomique et aux energies alternatives (CEA), Commission Europeenne (FEDER fund and Marie Curie Program), Institut Universitaire de France (IUF), IdEx program and UnivEarthS Labex program at Sorbonne Paris Cite (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02), Labex OCEVU (ANR-11-LABX-0060) and the A*MIDEX project (ANR-11-IDEX-0001-02), Region Ile-de-France (DIM-ACAV), Region Alsace (contrat CPER), Region Provence-Allies-Cote d'Azur, Departement du Var and Ville de La Seyne-sur-Mer, France; Bundesministerium fin Bildung and Forschung (BMBF), Germany; Istituto Naziona-le di Fisica Nucleare (INFN), Italy; Nederlandse organisatie voor Wetenschappelijk Onderzoek (NWO), the Netherlands; Council of the President of the Russian Federation for young scientists and leading scientific schools supporting grants, Russia; National Authority for Scientific Research (ANCS), Romania; Ministerio de Economia y Competitividad (MINE-CO): Plan Estatal de Investigacion (refs. FPA2015-65150-C3-1-P, -2-P and -3-P, (MINECO/FEDER)), Severn Ochoa Centre of Excellence and MultiDark Consolider (MINECO), and Prometeo and Grisolia programs (Generalitat Valencia-na), Spain; Ministry of Higher Education, Scientific Research and Professional Training, Morocco. We also acknowledge the technical support of Ifremer, AIM and Foselev Marine for the sea operation and the CC-IN2P3 for the computing facilities.Albert, A.; Andre, M.; Anghinolfi, M.; Anton, G.; Ardid Ramírez, M.; Aubert, J-.; Aublin, J.... (2018). The cosmic ray shadow of the Moon observed with the ANTARES neutrino telescope. The European Physical Journal C. 78(12):1-9. https://doi.org/10.1140/epjc/s10052-018-6451-3S197812M. G. Aartsen et al. (IceCube Collaboration), Science 342, 1242856 (2013)M. G. Aartsen et al. (IceCube Collaboration), Journal of Instrumentation 12(3), P03012 (2017)M. G. Aartsen et al. (IceCube Collaboration), Phys. Rev. Lett. 113, 101101 (2017)M. Ageron et al. (ANTARES Collaboration), Nucl. Instrum. Meth. A656, 11-38 (2011)M. Ambrosio et al. (MACRO Collaboration), Phys. Rev. D59, 012003 (1999)J. H. Cobb et al. (Soudan 2 Collaboration), Phys. Rev. D61, 092002 (2000)P. Achard et al., Astropart. Phys. 23(4), 411–434 (2005)M. G. Aartsen et al. (IceCube Collaboration), Phys. Rev. D89(10), 102004 (2014)D. E. Alexandreas et al. (CYGNUS Collaboration), Phys. Rev. D43, 1735-1738 (1991)M. Amenomori et al. (Tibet AS gamma Collaboration), Phys. Rev. D47, 2675-2681 (1993)A. Borione et al., Phys. Rev. D 49, 1171–1177 (1994)B. Bartoli et al. (ARGO-YBJ Collaboration), Phys. Rev. D85, 022002 (2012)A. U. Abeysekara et al. (HAWC Collaboration), Phys. Rev. D97(10), 102005 (2018)J. A. Aguilar et al. (ANTARES Collaboration), Astropart. Phys. 34, 539-549 (2011)S. Adrian-Martinez et al. (ANTARES Collaboration), JINST 7, T08002 (2012)J. A. Aguilar et al. (ANTARES Collaboration), Astropart. Phys. 34(9), 652-662 (2011)S. Adrian-Martinez et al. (ANTARES Collaboration), JCAP 1303, 006 (2013)J. A. Aguilar et al. (ANTARES Collaboration), Astropart. Phys. 34(3), 179-184 (2010)J. A. Aguilar et al. (ANTARES Collaboration), Astropart. Phys. 33(2), 86-90 (2010)S. Adrian-Martinez et al. (ANTARES Collaboration), Astropart. Phys. 78(C), 43-51 (2016)C. Distefano (ANTARES Collaboration), Nucl. Instrum. Meth A626-627, S223-S225 (2011)B. Rhodes, in SkyField, Elegant Astronomy for Python, http://rhodesmill.org/skyfield/ . Accessed 31 July 2018K.M. Górski, E. Hivon, A.J. Banday, B.D. Wandelt, F.K. Hansen, M. Reinecke, M. Bartelmann, Astrophys. J. 622, 759–771 (2005)J. H. Meeus, in Astronomical Algorithms., ed. by Willmann-Bell, Incorporated (1991)G. Carminati, A. Margiotta, M. Spurio, Comput. Phys. Commun. 179, 915–923 (2008)A. Albert et al. (ANTARES Collaboration), JHEP 07, 54 (2017)A. Albert et al. (ANTARES Collaboration), Phys. Rev. D96, 082001 (2017)J.A. Aguilar et al. (ANTARES Collaboration), Astropart. Phys. 34, 179-184 (2010)L.A. Fusco, A. Margiotta, EPJ Web Conf. 116, 02002 (2016)H. Yepes-Ramirez (ANTARES Collaboration), Nucl. Instrum. Meth A725, 203-206 (2013)J. Brunner (ANTARES Collaboration), in Proceedings of the VLVnuT Workshop, Amsterdam, Netherlands, October 5-8, 2003, ed. by E. de Wolf (Amsterdam: NIKHEF), http://www.vlvnt.nl/proceedings/A. Margiotta (ANTARES Collaboration), Nucl. Instrum. Meth. A725, 98-101 (2013)S. Baker, R.D. Cousins, Nucl. Instrum. Meth. 221, 437–442 (1984)P. Adamson et al. (MINOS Collaboration), Astropart. Phys. 34(6), 457-466 (2011)G. Cowan, Statistical Data Analysis (Clarendon Press, Oxford, 1998