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Sample records for capa atmosferica superficial

  1. Micrometeorological studies for the characterization of the atmospheric superficial layer in the Valley of Mexico; Estudios micrometeorologicos para la caracterizacion de la capa atmosferica superficial en el Valle de Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Saldana Flores, Ricardo; Salcido Gonzalez, Victor A.; Borja Diaz, Marco Antonio R.; Morales Reyes, Maria Flor [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1995-12-31

    This work establishes the principal aspects related to two micrometeorological campaigns carried out in the Valley of Mexico, the first one from May 19 to 27, 1992 in the vicinity of the Valle de Mexico thermoelectric central and the second from September 13 to 21, 1993 in a site nearby the recreational lake of the Texcoco Plan. The first campaign of measurements encompassed the monitoring at ground level (at a height of 10 meters) of the following parameters: -wind orthogonal components; -temperature; -relative humidity; -Global radiation; - Net radiation; -Atmospheric pressure. Also, simultaneously five daily radio soundings were performed through a captive balloon and free soundings, up to an approximate height of 2500 meters. During the second campaign the same measurements as in the first campaign were carried out, except the radio soundings with the captive balloon, incorporating a turbulence ultrasonic sensor with which, among other parameters, were obtained: -Mean velocities of the wind orthogonal components; -Mean temperature; -Covariance of the wind component z and temperature; -Friction velocity; -Monin-Obukov length; -Vertical heat flow; -Wind mean velocity; -Wind mean direction. [Espanol] En el presente trabajo se anotan los principales aspectos relativos a dos campanas micrometeorologicas realizadas en el Valle de Mexico, la primera del 19 al 27 de mayo de 1992 en las inmediaciones de la central termoelectrica Valle de Mexico y la segunda del 13 al 21 de septiembre de 1993, en un sitio cercano al lago recreativo del Plan Texcoco. La primera campana de mediciones abarco el monitoreo en superficie (a 10 m de altura) de los siguientes parametros: - Componentes ortogonales del viento. - Temperatura. - Humedad relativa. - Radiacion global. - Radiacion neta. - Presion atmosferica. Asimismo, se llevaron a cabo simultaneamente cinco radiosondeos diarios a traves de un globo cautivo y de sondas libres, hasta una altura aproximada de 2500 metros. Durante la

  2. Influencia del acabado superficial sobre el comportamiento tribológico de capas nitrocarburadas en acero X40CrMoV5 1

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    Miguel, V.

    2005-12-01

    Full Text Available In this work the surface roughness behaviour in the forming of gaseous nitrocarburized layers has been analyzed. Ra values from 0.02 to 1.50 μm. has been considered. Obtained results prove a minor influence on layer thickness. A little increase of Ra has been observed. The abrasive wear resistance of nitrocarburized specimens was researched. The carbonitride ε is the only constituent in the about 6 μm thickness layers that have been carried out in this work. The tests revealed a minor wear resistance of the external part in the layers. This way, the external zone is less effective to wear phenomena than the internal. The specimens with small roughness parameters values show a higher poor wear resistance zone.

    En este trabajo se estudia la influencia que el acabado superficial del acero X40CrMoV5 1 tiene sobre la capa blanca o de combinación formada en el proceso de la nitrocarburación gaseosa. Se consideran acabados superficiales en el rango de 0,02 a 1,50 μm para Ra. Los resultados obtenidos indican que la rugosidad aumenta en todos los casos, aunque tiene poca influencia sobre el espesor de capa formada. También se ha investigado el comportamiento frente al desgaste abrasivo de las capas obtenidas que están constituidas en su totalidad por nitrocarburo ε y son de un espesor aproximado de 6 μm. Se ha encontrado un comportamiento diferenciado frente al desgaste de la zona externa de la capa frente a la zona subsuperficial. Los resultados revelan que la capa externa de la capa de combinación es poco efectiva frente al desgaste en relación con la capa subsuperficial. La zona de peor comportamiento es mayor para las probetas con acabados superficiales más finos.

  3. Turbulent Characterization of atmospheric surface layer over non-homogeneous terrain; Caracterizacion turbulenta de la capa superficial atmosferica en un terreno no homogeneo

    Energy Technology Data Exchange (ETDEWEB)

    Artinano Rodriguez de Torres, B.

    1989-07-01

    About 15000 wind and temperature profiles from a 100 m tower located in CEDER (Soria, Spain) have been analyzed. Using profiles in close neutral conditions, two main parameters of surface layer were obtained. Results show a great dependence of these parameters (Z{sub 0} roughness length and u friction velocity) on flow conditions and terrain (tinctures. Difficulty finding neutral conditions in this type of terrain (gently rolling and scattered bush) and in this latitude , is also remarkable. (Author) 91 refs.

  4. Capa fotod muuseumi

    Index Scriptorium Estoniae

    1998-01-01

    Robert Capa vend kinkis Madriidi Kuninganna Sofia Kunstikeskusele Hispaania kodusõda käsitleva kuulsa fotoseeria, mille hulgas on Robert Capa (õige nimega Endre Friedmann; 1913-1954) rahvusvaheliselt tuntuks teinud ja Hispaania kodusõja sümboliks muutunud foto 'Langenud vabatahtlik' 1936. aastast. Fotod pannakse avalikkusele välja 23. nov.

  5. Dynamics of oxygen production / consumption in Dunaliella salina, Thalassiosira weissfiogii and Heterocapsa triquetra circulating within a simulated upper mixed layer Dinámica de producción / consumo de oxígeno en Dunaliella salina, Thalassiosira weissfiogii and Heterocapsa triquetra circulando dentro de una capa superficial de mezcla simulada

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    Elena S Barbieri

    2006-11-01

    Full Text Available Oxygen production / consumption dynamics in three phytoplankton species (20-25 µm in effective diameter, Dunaliella salina (Chlorophyceae, Thalassiosira weissfiogii (Bacillariophyceae and Heterocapsa triquetra (Dinophyceae, was experimentally determined when cells circulated within a simulated upper mixed layer (UML. Samples were exposed to three radiation treatments receiving: a full solar radiation (PAB, 280-700 nm, b PAR+UV-A (PA, 320-700 nm, and c only PAR (P, 400-700 nm. Two pathways were simulated (as if the cells started to circulate from the surface or from the bottom of the UML: 1 downward circulation (i.e., from 100% to 9% irradiance and back to 100%, and 2 upward circulation (i.e., from 9% to 100% irradiance and back to 9%. There were no significant differences among radiation treatments (p Se determinó experimentalmente la dinámica de producción/consumo de oxígeno en tres especies fitoplanctónicas (20-25 µm de diámetro efectivo: Dunaliella salina (Chlorophyceae, Thalassiosira weissfiogii (Bacillariophyceae y Heterocapsa triquetra (Dinophyceae, cuando las células circularon dentro de una capa superficial de mezcla (CSM simulada. Las muestras fueron expuestas a tres tratamientos de radiación recibiendo: a toda la radiación solar (PAB, 280-700 nm, b PAR+RUV-A (PA, 320-700 nm, y c sólo PAR (P, 400-700 nm. Se simularon dos recorridos (como si las células circularan desde la superficie o desde la base de la CSM: 1 circulación hacia abajo (i.e., desde el 100% al 9% de la irradiancia y nuevamente al 100%, y 2 circulación hacia arriba (i.e., desde el 9% al 100% de la irradiancia y nuevamente al 9%. No se encontraron diferencias significativas entre tratamientos de radiación (p < 0,05 y la inhibición fotosintética se debió sólo a PAR. Se encontraron importantes diferencias inter-específicas en las tasas de oxígeno cuando las células circularon dentro de la CSM simulada, D. salina fue afectada tanto por altas como por

  6. Superficial and electrochemical study of stainless steel 304l with an inhibitory protective coating (TiO{sub 2} and ZrO{sub 2}); Estudio superficial y electroquimico de acero inoxidable 304L con una capa protectora inhibidora (TiO{sub 2} y ZrO{sub 2})

    Energy Technology Data Exchange (ETDEWEB)

    Davila N, M. L.; Contreras R, A.; Arganis J, C. R., E-mail: aida.contreras@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

    2014-10-15

    The degradation mechanisms in the boiling water reactors (BWR) have been an alert focus for owners, especially the cracking by stress corrosion cracking (SCC), therefore different techniques have been studied to inhibit this problem inside which is the water injection of hydrogen feeding (HWC, Hydrogen Water Chemistry), together with the noble metals injection (NMCA, Nobel Metal Chemical Addition) and the ceramic materials injection that form an inhibitory protective coating (Ipc). In this work the Ipc was simulated, for which were carried out hydro-thermals deposits starting from suspensions of 1000 ppm of zirconium oxide in its crystalline phase baddeleyite and titanium oxides in its anatase and rutile phases, on test tubes of stainless steel 304l previously rusty under simulated conditions of pressure and temperature of a BWR (288 C and 8 MPa). The superficial characterization was realized by scanning electron microscopy, energy-dispersive of X-ray and X-ray diffraction. The capacity to mitigate the corrosion was studied with the electrochemical technique of Tafel polarization (288 C and 8 MPa). The steel presents the formation of two oxide coatings formed by magnetite and hematite. The baddeleyite presents a deposit more thick and homogeneous it also presents the most negative electrochemical potential of corrosion, what indicates that it has the bigger capacity to mitigate the SCC. (Author)

  7. Caracterización de capas coloreadas sobre AISI 304

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    López, J.

    1998-05-01

    Full Text Available A common method for obtaining colour coatings on stainless steel surfaces is by dipping in strongly oxidizing solutions (H2SO4-CrO3 at 70°C. This work improves the knowledge of these coatings by means of techniques that were not available some years ago, such as ellipsometry, to determine the refraction index and the thickness, and atomic field microscopy (AFM, to observe the coloured surface. From these techniques, it is possible to state that films are formed by an aggregation of particle ranging in size from 5 to 15 nm, the interstices are pores of approximately 5 nm diameter.

    El método más usual de obtener en la superficie de los aceros inoxidables capas de colores variables es mediante su inmersión en soluciones fuertemente oxidantes (H2SO4-CrO3 a una temperatura en torno a 70°C. El trabajo mejora el conocimiento que de estas capas se tiene por medio de técnicas que no eran disponibles hace algunos años, tales como la elipsometría, para la obtención de parámetros ópticos y determinación de espesores, y la microscopía de campo atómico, para la observación de la superficie coloreada. El uso conjunto de estas técnicas permite observar que la película de color está formada por una agregación de partículas con un tamaño que oscila entre los 5 y los 15 nm, los intersticios que aparecen entre las partículas pueden identificarse como poros de unos 5 nm de tamaño.

  8. The CAPA Integrative Online System for College Major Exploration

    Science.gov (United States)

    Betz, Nancy E.; Borgen, Fred H.

    2010-01-01

    Career assessment has advanced on several fronts, enabling a CAPA integrative online system for exploring college majors with unprecedented precision and utility. The key inventories in the system are the CAPA Confidence Inventory (CCI), with its 6 general and 27 specific scales, and the CAPA Interest Inventory, with its 6 general and 35 specific…

  9. The Child and Adolescent Psychiatric Assessment (CAPA).

    Science.gov (United States)

    Angold, A; Prendergast, M; Cox, A; Harrington, R; Simonoff, E; Rutter, M

    1995-07-01

    Great advances have been made during the last 20 years in the development of structured and semi-structured interviews for use with psychiatric patients. However, in the field of child and adolescent psychiatry there have been weaknesses in the specification and definition of both symptoms and the psychosocial impairments resulting from psychiatric disorder. Furthermore, most of the available interviews for use with children have been tied to a single diagnostic system (DSM-III, DSM-III-R, or ICD-9). This has meant that symptom coverage has been limited and nosological comparisons have been inhibited. The Child and Adolescent Psychiatric Assessment (CAPA) represents an attempt to remedy some of these shortcomings. This paper outlines the principles adopted in the CAPA to improve the standardization, reliability and meaningfulness of symptom and diagnostic ratings. The CAPA is an interviewer-based diagnostic interview with versions for use with children and their parents, focused on symptoms occurring during the preceding 3 month period, adapted for assessments in both clinical and epidemiological research. PMID:7480451

  10. Analysis system and remote monitoring of atmospheric discharges; Sistema de analisis y monitoreo remoto de descargas atmosfericas

    Energy Technology Data Exchange (ETDEWEB)

    Zabre Borgaro, Eric; Rodriguez Padilla, Ma. Consuelo [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1996-12-31

    A system for analysis and monitoring of atmospheric discharges (SAMDA (Sistema de Analisis y Monitoreo de Descargas Atmosfericas) (lightnings)) in an electronic device that subsequently transmits these data as automatic processing or by request of a user from a computer operating as a remote station, is described. Also, the characteristics of the SAMDA, its evolution, and the challenges encountered along the development of this project and comments on possible improvements to the equipment and data recordings of this nature, are described. [Espanol] Se presenta el sistema de analisis y monitoreo de descargas atmosfericas (SAMDA) utilizado en la deteccion y registro de descargas atmosfericas (rayos) en un equipo electronico que posteriormente transmite estos datos como procesamiento automatico o por peticion de un usuario desde una computadora, operando como estacion remota. Asimismo, se describen las caracteristicas del SAMDA, su evolucion, los retos encontrados a lo largo del desarrollo de este proyecto y comentarios sobre posibles mejoras a equipos y registros de datos de esta naturaleza.

  11. Tribología de nuevas capas autolubricantes producidas mediante PVD

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    Oñate, J. I.

    2005-12-01

    Full Text Available MoS2 coatings, deposited by PVD show a low friction under vacuum conditions, but degrade easily under atmospheric conditions. This work describes the development of a new type of MoSx, coating, modified with WC. These coatings presented a very low and stable friction coefficient lower than 0.04 when tested under vacuum at 0.75 GPa in a ball on disc tribometer. Durability was higher than 1 million wear cycles, showing a wear rate of 1.3 10-16 m3/Nm. When tested under atmospheric conditions and up to 70 % RH, friction increased to 0.15 and durability reached a lower value of up to 3 x 105 cycles. Surface analyses in these coatings showed S/Mo ratios higher than 1.2 and with oxygen levels lower than 2 %, demonstrating the lubricant character of the coating.

    Las capas de MoS2 depositadas mediante PVD tienen baja fricción en vacío pero se degradan con facilidad al aire, especialmente en presencia de humedad. Este trabajo describe el desarrollo de nuevas capas de MoSx modificadas con WC. En ensayos de "bola sobre disco" a 0,75 GPa, las capas presentaron una fricción muy baja y estable (< 0,04 en vacío. Se obtuvo una durabilidad superior a 1 millón de ciclos, mostrando un desgaste de 1,3 x 10-16 m3/Nm, mejorado respecto a otras capas de MoSx. El coeficiente de fricción aumentó a 0,15 y la durabilidad disminuyó hasta 1 a 3 x 105 ciclos en aire hasta 70 % HR. El análisis superficial mostró ratios de S/Mo superiores a 1,2, con menos del 2 % de oxígeno, demostrando carácter lubricante.

  12. Atmospheric electric discharges and grounding systems; Descargas atmosfericas y sistemas de conexion a tierra

    Energy Technology Data Exchange (ETDEWEB)

    Rivas, Elena [ed.] [Instituto de Investigaciones Electricas, Temixco, Morelos (Mexico)

    1999-07-01

    In this article the work made by the Institute of Investigaciones Electricas (IIE), in the area of atmospheric electric discharges and grounding connections at Comision Federal de Electricidad (CFE) is presented. The work consisted of the revision of the procedures for the design of transmission lines and substations of CFE from which high indexes of interruptions are reported, from this, a program was defined that allowed to improve the existing designs in CFE. [Spanish] En este articulo se presenta el trabajo realizado por el Instituto de Investigaciones Electricas (IIE), en el area de descargas atmosfericas y conexiones a tierra en Comision Federal de Electricidad (CFE). El trabajo consistio en la revision de los procedimientos de diseno de las areas de transmision y subestaciones de la CFE para los que se reportan altos indices de salidas, a partir de esto se definio un programa que permitio mejorar los disenos existentes en la CFE.

  13. De la capa al agujero: los descuidos de la ciencia

    OpenAIRE

    Orozco-Martínez, Carlos E.

    1997-01-01

    Diez años después de la firma del Protocolo de Montreal para regular el uso de sustancias nocivas para la capa de ozono, firmado por 24 países en 1987, se reseñan algunos inventos tecnológicos que si bien hacen la vida cotidiana más cómoda, continúan ocasionando daños a la capa de ozono. Asimismo, se presentan las batallas libradas hasta entonces por los científicos Mario Molina y Sherwood Rowland para que se reconocieran los efectos dañinos de los clorofluorocarbonos. Se incluye la reproducc...

  14. Zonas de Brillouin de los grupos de capa

    OpenAIRE

    García Santos, Laura

    2016-01-01

    La base de datos de las zonas de Brillouin de los grupos de capa del Bilbao Crystallographic Server incluye tablas de vectores de onda y figuras que forman la base para la clasificación de las representaciones de los grupos de capa. Las propiedades de simetría de los vectores de onda se determinan por los llamados grupos del espacio recíproco y esta clasificación se compara con la que recoge el libro “Character Tables and Compatibility Relations of The Eighty Layer Groups and Seventeen Plane ...

  15. Mechanism and function of drosophila capa GPCR: a desiccation stress-responsive receptor with functional homology to human neuromedinU receptor

    OpenAIRE

    Selim Terhzaz; Pablo Cabrero; Robben, Joris H.; Radford, Jonathan C.; Hudson, Brian D.; Graeme Milligan; Dow, Julian A. T.; Shireen-A Davies

    2012-01-01

    The capa peptide receptor, capaR (CG14575), is a G-protein coupled receptor (GPCR) for the D. melanogaster capa neuropeptides, Drm-capa-1 and -2 (capa-1 and -2). To date, the capa peptide family constitutes the only known nitridergic peptides in insects, so the mechanisms and physiological function of ligand-receptor signalling of this peptide family are of interest. Capa peptide induces calcium signaling via capaR with EC(5)(0) values for capa-1 = 3.06 nM and capa-2 = 4.32 nM. capaR undergoe...

  16. Identification and expression of capa gene in the fire ant, Solenopsis invicta.

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    Man-Yeon Choi

    Full Text Available Recent genome analyses suggested the absence of a number of neuropeptide genes in ants. One of the apparently missing genes was the capa gene. Capa gene expression in insects is typically associated with the neuroendocrine system of abdominal ganglia; mature CAPA peptides are known to regulate diuresis and visceral muscle contraction. The apparent absence of the capa gene raised questions about possible compensation of these functions. In this study, we re-examined this controversial issue and searched for a potentially unrecognized capa gene in the fire ant, Solenopsis invicta. We employed a combination of data mining and a traditional PCR-based strategy using degenerate primers designed from conserved amino acid sequences of insect capa genes. Our findings demonstrate that ants possess and express a capa gene. As shown by MALDI-TOF mass spectrometry, processed products of the S. invicta capa gene include three CAPA periviscerokinins and low amounts of a pyrokinin which does not have the C-terminal WFGPRLa motif typical of CAPA pyrokinins in other insects. The capa gene was found with two alternative transcripts in the CNS. Within the ventral nerve cord, two capa neurons were immunostained in abdominal neuromeres 2-5, respectively, and projected into ventrally located abdominal perisympathetic organs (PSOs, which are the major hormone release sites of abdominal ganglia. The ventral location of these PSOs is a characteristic feature and was also found in another ant, Atta sexdens.

  17. Estudio de la degradación de la capa de sellado en perfiles de aluminio anodizado

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    Juan G. Castaño

    2010-01-01

    Full Text Available El anodizado del aluminio es simplemente el refuerzo de un proceso natural y espontáneo: la formación de una capa de alúmina estable y protectora mediante la cual se pueden obtener películas con una subcapa exterior porosa que acepta coloración. Luego la operación de sellado permite la formación de una sustancia gelatinosa compuesta principalmente de bohemita, que obstruye los poros y mejora la conservación del aspecto superficial y la resistencia a la corrosión. Utilizando SEM y EDS, en este trabajo se estudiaron las causas de la degradación de la capa de sellado de algunas piezas de aluminio anodizado, independientemente del medio en donde está expuesto el material, y se encontró su origen en la fotodegradación de un aditivo orgánico añadido en exceso durante la operación de sellado.

  18. Identification of one capa and two pyrokinin receptors from the malaria mosquito Anopheles gambiae

    DEFF Research Database (Denmark)

    Olsen, Stine S; Cazzamali, Giuseppe; Williamson, Michael;

    2007-01-01

    We cloned the cDNA of three evolutionarily related G protein-coupled receptors from the malaria mosquito Anopheles gambiae and functionally expressed them in Chinese hamster ovary cells. One receptor, Ang-Capa-R, was only activated by the two Anopheles capa neuropeptides Ang-capa-1 (GPTVGLFAFPRVa......We cloned the cDNA of three evolutionarily related G protein-coupled receptors from the malaria mosquito Anopheles gambiae and functionally expressed them in Chinese hamster ovary cells. One receptor, Ang-Capa-R, was only activated by the two Anopheles capa neuropeptides Ang-capa-1...... (GPTVGLFAFPRVamide) and Ang-capa-2 (pQGLVPFPRVamide) with EC(50) values of 8.6x10(-9)M and 3.3x10(-9)M, respectively, but not by any other known mosquito neuropeptide. The second receptor, Ang-PK-1-R, was selectively activated by the Anopheles pyrokinin-1 peptides Ang-PK-1-1 (AGGTGANSAMWFGPRLamide) and Ang-PK-1......-2 (AAAMWFGPRLamide) with EC(50) values of 3.3x10(-8)M and 2.5x10(-8)M, respectively, but not by mosquito capa or pyrokinin-2 peptides. For the third receptor, Ang-PK-2-R, the most potent ligands were the pyrokinin-2 peptides Ang-PK-2-1 (DSVGENHQRPPFAPRLamide) and Ang-PK-2-2 (NLPFSPRLamide) with EC(50) values of 5.2x...

  19. Superficial acral fibromyxoma.

    Science.gov (United States)

    Sawaya, Jennifer L; Khachemoune, Amor

    2015-01-01

    Superficial acral fibromyxoma (SAF), also known as digital fibromyxoma, is a rare soft tissue tumor with a predilection for acral surfaces. Superficial acral fibromyxoma classically presents as a pink to flesh-colored nodule located on the subungual or periungual region of the hands or feet. It is typically slow-growing and asymptomatic, which, coupled with its nonspecific clinical appearance, presents a diagnostic dilemma to the dermatologist. As these features overlap with those of a multitude of differential diagnoses, it is imperative to have a good understanding of the characteristics on which the diagnosis of SAF is based. Superficial acral fibromyxoma was initially described in 2001, since when several case reports and literature reviews have contributed to our current understanding of these tumors. In this article, we will review the history, clinical features, diagnosis, and management of SAF. It is our hope that this systematic approach will help to facilitate the recognition and management of this distinct dermatologic entity. PMID:25772615

  20. Superficies asociadas a nudos

    OpenAIRE

    Restrepo Mazo, Laura

    2010-01-01

    El estudio de las superficies asociadas a nudos ha sido muy importante en la teoría clásica de nudos, pues de ellas se derivan invariantes y propiedades que han permitido estudiar la clasificación y la existencia de los nudos y enlaces. En este trabajo se estudian las superficies asociadas nudos clásicos en general, interpretando algunos invariantes de nudos y enlaces provenientes de ellas. Se presenta el algoritmo de Killian Michael O’Brien para calcular una matriz de Seifert de un nudo, usa...

  1. SUPERFICIAL CERVICAL PLEXUS BLOCK

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    Komang Mega Puspadisari

    2014-01-01

    Full Text Available Superficial cervical plexus block is one of the regional anesthesia in  neck were limited to thesuperficial fascia. Anesthesia is used to relieve pain caused either during or after the surgery iscompleted. This technique can be done by landmark or with ultrasound guiding. The midpointof posterior border of the Sternocleidomastoid was identified and the prosedure done on thatplace or on the level of cartilage cricoid.

  2. Curvas y superficies

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    Roy Sánchez Gutiérrez

    2012-09-01

    Full Text Available El desarrollo de la tecnología ha evolucionado en todos los campos del conocimiento. Las matemáticas han contribuido enormemente a estos cambios; la visualización, la experimentación numérica y gráfica han cambiado aspectos fundamentales de la manera en que enseñamos el razonamiento conceptual; sin embargo, seguimos creyendo que la esencia de las matemáticas es el enfoque a la comprensión conceptual de los temas básicos y fundamentales. Los conceptos matemáticos de curvas y superficies describen a las cosas reales del mundo que habitamos. Estos elementos matemáticos pueden explicarnos las formas de las cosas que nos rodean: [2]; las hélices, espirales, cónicas, cilindros, esferas, tetraedros, cubos, tubos, rectas, planos, etc. una colección de figuras geométricas que resaltan por su belleza y por su similitud con muchos objetos que nos rodean. Nuestro objetivo es la construcción de las curvas y superficies con el apoyo de Matlab [11] para obtener la gráfica de esa colección de figuras geométricas y de otros. El uso de parametrización tanto en curvas como en superficies es básico por la facilidad con que trabaja Matlab para efectuar los cálculos y luego para su representación gráfica. Queremos mostrar la forma de obtener la gráfica de estas curvas y superficies especiales que son comunes e importantes. Las definiciones formales se encuentran en el apéndice o en la bibliografía que citamos. La disponibilidad de la tecnología no hace menos importante comprender con claridad los conceptos que sustentan las imágenes que aparecen en la pantalla, sino que aumenta su importancia. Cuando se usa con propiedad las computadoras, son herramientas poderosas para descubrir y comprender temas que antes eran difíciles de visualizar.

  3. Capas de a-SiN:H modificadas mediante la irradiación con un láser de excímero

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    Banerji, N.

    1998-04-01

    Full Text Available Hydrogenated amorphous silicon nitride (a:SiN:H films produced by CO2 and ArF laser-induced CVD in parallel configuration using silane/ammonia or disilane/ammonia gas mixtures were subjected to room temperature multiple pulse ArF excimer laser irradiations in an inert gas atmosphere. Modifications in their chemical composition, refractive index, and surface morphology were systematically followed up through Fourier-transform infrared spectroscopy (FTIR, energy dispersive X-ray spectroscopy (EDS, single wavelength ellipsometry and atomic force microscopy (AFM, respectively. The observed film modifications involving large reductions in hydrogen (Si-H and N-H with the first few shots accompanied by a progressive incorporation of oxygen (Si-O and Si-OH and a reduction of Si-N bonds that are attributed to UV-induced photochemistry where the atmospheric water incorporated in the films between successive irradiations plays an important role. Comparison among the different films indicated that the extent of bonded hydrogen in the films and their surface morphology influence their oxidation resistance.

    Utilizando una mezcla de silano/amoníaco o disilano/amoníaco se obtuvieron capas de nitruro de silicio amorfo hidrogenado (a-SiN:H mediante depósito químico en fase vapor asistido por láser CO2 y ArF, ambos en configuración paralela. Estas capas se sometieron a irradiación con un láser excímero de ArF en atmósfera inerte. Las variaciones, tanto en su composición química como en su índice de refracción y morfología superficial se estudiaron sistemáticamente mediante espectroscopia infrarroja por transformada de Fourier (FTIR, espectroscopia dispersiva de rayos X (EDS, elipsometría y microscopía de fuerzas atómicas (AFM, respectivamente. Las modificaciones observadas involucran por una parte una gran reducción, con los primeros pulsos de irradiación, del hidrógeno enlazado (Sili y N-H, acompañado por una

  4. Study of the effect of the NO{sub 2} in the atmospheric corrosion of copper; Estudio del efecto del NO{sub 2} en la corrosion atmosferica del cobre

    Energy Technology Data Exchange (ETDEWEB)

    Mariaca Rodriguez, Liboria

    1997-12-31

    atmosferica, que tiene lugar por la formacion de capas de electrolito extremadamente finas. Las tecnicas electroquimicas de corriente continua y corriente alterna, con sensores de diseno especial como los desarrollados en esta investigacion, se han mostrado tambien como herramientas validas en estas situaciones.

  5. Un congreso de fisica estudia la composicion de las capas de la tierra

    CERN Multimedia

    2003-01-01

    "El Congreso de Internacional de Neutrinos, que ayer comenzo en el Jardin Botanico de Valencia, aborda, entre otros aspectos, la composicion y el perfil tomografico de las distintas capas de estratos del interior de la Tierra, segun informo a Efe el profesor Jose Furtado Valle" (1/2 page).

  6. Molecular cloning and functional expression of a Drosophila receptor for the neuropeptides capa-1 and -2

    DEFF Research Database (Denmark)

    Iversen, Annette; Cazzamali, Giuseppe; Williamson, Michael;

    2002-01-01

    malaria mosquito Anopheles gambiae (58% amino acid residue identities; 76% conserved residues; and 5 introns at identical positions within the two insect genes). Because capa-1 and -2 and related insect neuropeptides stimulate fluid secretion in insect Malpighian (renal) tubules, the identification of...

  7. The Canadian Precipitation Analysis (CaPA): Evaluation of the statistical interpolation scheme

    Science.gov (United States)

    Evans, Andrea; Rasmussen, Peter; Fortin, Vincent

    2013-04-01

    CaPA (Canadian Precipitation Analysis) is a data assimilation system which employs statistical interpolation to combine observed precipitation with gridded precipitation fields produced by Environment Canada's Global Environmental Multiscale (GEM) climate model into a final gridded precipitation analysis. Precipitation is important in many fields and applications, including agricultural water management projects, flood control programs, and hydroelectric power generation planning. Precipitation is a key input to hydrological models, and there is a desire to have access to the best available information about precipitation in time and space. The principal goal of CaPA is to produce this type of information. In order to perform the necessary statistical interpolation, CaPA requires the estimation of a semi-variogram. This semi-variogram is used to describe the spatial correlations between precipitation innovations, defined as the observed precipitation amounts minus the GEM forecasted amounts predicted at the observation locations. Currently, CaPA uses a single isotropic variogram across the entire analysis domain. The present project investigates the implications of this choice by first conducting a basic variographic analysis of precipitation innovation data across the Canadian prairies, with specific interest in identifying and quantifying potential anisotropy within the domain. This focus is further expanded by identifying the effect of storm type on the variogram. The ultimate goal of the variographic analysis is to develop improved semi-variograms for CaPA that better capture the spatial complexities of precipitation over the Canadian prairies. CaPA presently applies a Box-Cox data transformation to both the observations and the GEM data, prior to the calculation of the innovations. The data transformation is necessary to satisfy the normal distribution assumption, but introduces a significant bias. The second part of the investigation aims at devising a bias

  8. Cálculo del asiento elástico tridimensional de cimentaciones de rigidez variable en terrenos con una capa rígida inclinada

    Directory of Open Access Journals (Sweden)

    Díaz, E.

    2016-06-01

    Full Text Available The formulas based on the elasticity theory are widely used for the calculation of foundation settlements, as the geotechnical regulations recommends their use. However, these methods do not cover all possible geotechnical situations because, frequently, the geotechnical conditions are complex. In this work, the influence of an inclined rigid layer on the elastic settlements of a shallow foundation is analysed. For this purpose, 273 three-dimensional non-linear finite element models have been solved varying the key parameters of the problem: inclination and depth of the rigid layer and the rigidity of the foundation. Finally, a statistical analysis of the results of the models has been performed and a formula, which can be used for the calculation of the settlements to consider the presence of a rigid inclined layer in depth, has been proposed.Las fórmulas basadas en la teoría de la elasticidad son ampliamente utilizadas para el cálculo de asientos de cimentaciones, ya que la totalidad de la normativa geotécnica recomienda su empleo. No obstante, estos métodos no cubren todas las situaciones geotécnicamente posibles ya que frecuentemente las condiciones geológicas son complejas. En este trabajo se analiza la influencia de la presencia de una capa rígida inclinada en los asientos elásticos de una cimentación superficial. Para ello se han resuelto 273 modelos tridimensionales no lineales de elementos finitos, variando los parámetros clave del problema: la inclinación y la profundidad de la capa rígida y la rigidez de la cimentación. Finalmente, se ha realizado un análisis estadístico de los resultados de los modelos y se ha propuesto una fórmula que puede ser utilizada en el cálculo de asientos por métodos elásticos, para tener en consideración la presencia de una capa rígida inclinada en profundidad.

  9. Application of a Lagrangian modeling to the atmospheric pollution; Aplicacion de una modelizacion Lagrangiana a la contaminacion atmosferica transfronteriza

    Energy Technology Data Exchange (ETDEWEB)

    Rua, A.; Hernandez, E. [Departamento de Fisica del Aire, Universidad Complutense de Madrid, Facultad de Ciencias Fisicas, Madrid (Spain); Gimeno, L. [Centro de Formacion del Instituto Nacional de Meteorologia (INM), Madrid (Spain)

    1998-04-01

    In this article, a physical modeling of the atmospheric pollution was considered. The objective was to determine the concentrations of pollutants in a receptor station reproducing the way followed by the air mass and simulating the physical and chemical processes involved during this way. To do that we used a Lagrangian model. To estimate the quality of the model a comparison between the theoretical concentration from the model and the observed concentrations is done. The model uses the air mass trajectories arriving at the receptor station calculated from the Limited Area Model (LAM). These trajectories let us know the air mass position each 6 hours. Once the initial model had been run, several parameters were modified with the aim of reproducing letter the conditions of The Iberian Peninsula. The considered pollutants were the SO{sub 2} and SO{sub 4}{sup 2}- and the chosen station was Logrono (Spain). [Spanish] En este articulo se planteo una modelizacion de la contaminacion atmosferica transfronteriza desde un punto de vista fisico. Asi, reproduciendo el camino seguido por las masas de aire que transportan los contaminantes y simulando lo mejor posible los procesos fisico-quimicos existentes durante ese camino, pretendimos determinar cual fue la concentracion final registrada de tales contaminantes en una estacion receptora. Un modelo fisico de tipo Lagrangiano se uso en este trabajo. Para estimar la bondad de tal modelizacion se realizo una comparacion entre la concentracion final estimada mediante la modelizacion y la observada. Se partio de las trayectorias de las masas de aire que llegan hasta esa estacion receptora, calculadas a partir del Modelo de Area Limitada (LAM), y que permite conocer la posicion de la masa de aire cada 6 horas. Fueron modificados algunos parametros del modelo fisico inicialmente propuestos, adecuandolos mas a la realidad fisica de la Peninsula Iberica, lograndose una mejora en los resultados obtenidos en un primer momento. Los

  10. Evaluación de la Capacidad Osteogénica de las DPPSC (Dental Pulp Pluripotent Stem Cells) sobre diferentes superficies y Biocoating para validar una nueva superfie de Implante Dental

    OpenAIRE

    Murtra Sada, Maria Cristina

    2014-01-01

    Cuando tenemos un implante de Ti convencional, la calidad de su superficie es el pilar fundamental para la osteointegración debido a que sus características topográficas y químicas, son las que controlan la conformación de su capa proteica, y con ello, el sistema de comunicación entre célula-proteína-implante que guiará hacia la deseada osteointegración. Pero en el momento en que a ese implante de Ti convencional se le añade un biocoating, su superficie bioinerte (Ti) se convierte en una supe...

  11. Canadian Precipitation Analysis (CaPA): Integration of satellite precipitation data

    Science.gov (United States)

    Friesen, Bruce; Rasmussen, Peter

    2014-05-01

    CaPA (Canadian Precipitation Analysis) is a system developed by Environment Canada to produce real-time gridded precipitation estimates on a sub-daily basis. This is accomplished through the use of statistical interpolation to combine gridded precipitation from Environment Canada's Global Environmental Multiscale (GEM) model with synoptic weather stations. The goal of CaPA is to produce a temporally and spatially accurate representation of precipitation, benefiting many hydrological applications including the forecasting of floods, agriculture, climatic studies, and use as a resource. In areas across Canada, the network density of weather stations can be quite low, limiting the accuracy of any simple interpolation method. This is especially concerning where the area between stations is large enough to contain entire events, such as convective storms which contribute large amounts of precipitation over small areas. The project investigates the inclusion of satellite data from Precipitation Estimation from Remote Sensing Information using Artificial Neural Networks (PERSIANN) and the Climate Prediction Center MORPHing (CMORPH) technique into CaPA, in an attempt to capture events that would otherwise go unnoticed. The project consists of three parts, where the first is an evaluation of the performance of PERSIANN and CMORPH over Canada. As observational data, the Second Generation of Daily Adjusted Precipitation for Canada (APC2) is used on the daily scale, and unadjusted synoptic data is used on the sub-daily scale. Measures of mean bias and categorical scores show spatial and temporal trends in the performance of the satellite data, warranting some pre-processing before its integration. The second part of the project is the pre-processing of the satellite data, which includes a bias removal and an identification of optimal areas and times to include. Since CaPA uses the GEM model as the background field, it does not require the satellite data to be continuous in

  12. Caracterización de la capa y el filo adherido en el mecanizado de la aleación AA7050

    Directory of Open Access Journals (Sweden)

    Sánchez-Sola, J. M.

    2005-12-01

    Full Text Available The built-up edge (BUE and the built-up layer (BUL are the most common adhesion effects that can take place in the metal machining processes. Surface finish quality and tool life can be negatively affected by BUL and BUE. This work reports the results of a study on the microstructural differences between BUL and BUE formed in AA7050 cutting processes. From this study, it can be concluded that different mechanisms are the responsible of BUL and BUE. Thus, BUL and BUE cannot be considered as different forms of the same effect.

    El filo recrecido (BUE y capa adherida (BUL son los principales efectos de incorporación de material mecanizado a la herramienta de corte. Ambos, se enmarcan dentro de los denominados efectos de adhesión. La existencia de BUL y BUE puede influir de forma directa sobre la calidad de acabado superficial de la pieza e indirectamente sobre el desgaste de la propia herramienta. En el presente trabajo se analizan las diferencias microestructurales entre el BUL y el BUE, formados en el mecanizado de la aleación AA7050. Estas diferencias ponen de manifiesto que, al menos en las aleaciones estudiadas, ambos fenómenos están gobernados por distintos mecanismos y, por tanto, no pueden considerarse como formas diferentes de un mismo efecto.

  13. Mallas tensegríticas de doble capa y manipulaciones de Rot-Umbela

    Directory of Open Access Journals (Sweden)

    Gómez-Jáuregui, V.

    2012-09-01

    Full Text Available Double-layer tensegrity grids (DLTGs are tensegrity spatial systems containing two parallel networks of members in tension forming the top and bottom chords, whose nodes are linked by vertical and/or inclined web members under compression and tension. This paper presents, as an introduction, a brief perspective of the historical proposals for DLTGs over the last years, describing later a new approach for generating these kinds of structures, mainly in geometrical terms. After applying Otero’s proposal for designing conventional double-layer grids (DLGs, a new technique, known as Rot-Umbela Manipulation, is applied to their upper and/or lower layers for generating DLTGs. Rot-Umbela Manipulation consists of opening a vertex in the plane for obtaining a certain polygon, which is then rotated by a determined angle. This powerful operation opens an endless catalogue of DLTGs and a very interesting line of research in the field of Tensegrity.

    Las mallas tensegríticas de doble capa (MTDC son estructuras de Tensegridad que contiene dos mallas traccionadas paralelas, unidas por otra capa intermedia compuesta por elementos comprimidos y traccionados verticales y/o diagonales. Este trabajo presenta inicialmente un breve repaso sobre las propuestas de MTDC que se han realizado hasta el momento, exponiendo luego una nueva metodología, eminentemente geométrica, para la generación de este tipo de estructuras tensegríticas. Tras aplicar la propuesta de Otero para generar mallas de doble capa (MDC convencionales, se procede a realizar Manipulaciones de Rot-Umbela en las capas inferior y/o superior para convertir dicha estructura en una MTDC. Las Manipulaciones de Rot-Umbela consisten en la apertura de cada vértice en un cierto polígono, al cual se le aplica una rotación o giro particular. Se consigue así un potente sistema para “tensegritizar” MDC convencionales y abrir una línea de investigación muy interesante en el campo de la

  14. Calderón y la multiplicidad espacial en comedias de capa y espada

    OpenAIRE

    González-Pérez, A.

    2013-01-01

    Se trata de un análisis de la multiplicidad espacial en las comedias de capa y espada calderonianas. Se entiende por multiplicidad espacial el manejo de espacios simultáneos contiguos que permiten desde una simple circunstancia ingeniosa o una escena cómica, hasta juegos espaciales complejos en los cuales será esta multiplicidad espacial el nudo o núcleo de la historia y de la escenificación incluso con valores simbólicos. Se señalan algunas funciones de esta multiplicidad espacial, las forma...

  15. Control de Sustancias Agotadoras de la Capa de Ozono (SAO en vehículos importados

    Directory of Open Access Journals (Sweden)

    Miguel Antonio Cano-Pérez

    2011-01-01

    Full Text Available Se aborda el estudio sobre importaciones de vehículos, realizadas en la provincia de Holguín por las entidades MOA DIESEL S.A. y UNEVOL S.A, en el año 2009, con sistemas de aire acondicionado incorporados, sin la comprobación por la Aduana, ni por los especialistas del Centro de Inspección Ambiental del Ministerio de Ciencia, Tecnología y Medio Ambiente (CITMA acreditados al efecto, del tipo de gas refrigerante de los sistemas de climatización. Señala las partidas arancelarias de los vehículos que presentan los sistemas con gases refrigerantes y sustancias agotadoras de la capa de ozono. Argumenta que al no estar oficialmente establecido el control de ellos en los aires acondicionados de los vehículos, deja una brecha abierta por la cual pueden entrar alpaís sustancias agotadoras de la capa de ozono, sin el debido control, ni la correspondiente certificación. Se presentó la propuesta de la vía y forma para el control tanto por la Aduana, como por el CITMA.

  16. Evolución del arsenal científico para la vigilancia de la capa de ozono parte ii

    OpenAIRE

    González N., J C; Simbaqueva F, O

    2013-01-01

    Los propósitos de este trabajo son: a) describir los dominios en los que se centra parte de la literatura científica reciente, relacionada con la evaluación de la columna total de ozono y con los niveles de radiación solar ultravioleta B (RUVB); b) resaltar las más importantes estrategias desarrolladas en el abordaje del análisis y seguimiento de la capa de ozono; c) hallar las tendencias de asociación científica para la investigación de la capa de ozono; d) sugerir el ámbito en el cual los p...

  17. Influencia del acabado superficial sobre el comportamiento tribológico de capas nitrocarburadas en acero X40CrMoV5 1

    OpenAIRE

    Miguel, V.; Calatayud, A.; Coello, J.; Martínez, A.; Caminero, A.

    2005-01-01

    In this work the surface roughness behaviour in the forming of gaseous nitrocarburized layers has been analyzed. Ra values from 0.02 to 1.50 μm. has been considered. Obtained results prove a minor influence on layer thickness. A little increase of Ra has been observed. The abrasive wear resistance of nitrocarburized specimens was researched. The carbonitride ε is the only constituent in the about 6 μm thickness layers that have been carried out in this work. The tests revealed a minor wear re...

  18. CAPA-gene products in the haematophagous sandfly Phlebotomus papatasi (Scopoli) - vector for leishmaniasis disease

    DEFF Research Database (Denmark)

    Predel, Reinhard; Neupert, Susanne; Russell, William K.;

    2013-01-01

    inventory of neuropeptides, including those that regulate diuretic processes, is completely unknown. Direct MALDI-TOF/TOF mass spectrometric analysis of dissected ganglia of Phlebotomus papatasi, combined with a data-mining of sandfly genome 'contigs', was used to identify native CAPA-peptides, a peptide...... analyses confirm that the general architecture in sandflies appears identical to that of much larger mosquitoes....

  19. LÓGICA DEL NEGOCIO DE LA EMPRESA EN UNA CAPA INTERMEDIA

    Directory of Open Access Journals (Sweden)

    Daymel Marrero Viñas

    2002-05-01

    Full Text Available

    El trabajo que se presenta sugiere dos maneras de afrontar el desarrollo de un sistema informativo para la empresa en un ambiente colaborativo. Teniendo en cuenta la dinámica actual y las necesidades de mantenimiento inmediato a los sistemas automatizados. Se comparan los modelos de dos y trescapas para la arquitectura cliente-servidor haciendo especial énfasis en las ventajas del modelo de tres capas por su facilidad de extensión a diferentes entornos de desarrollo de la aplicación cliente sin necesidad de grandes variaciones en los procesos de manipulación de los datos.

  20. Modificación superficial de aceros y hierros fundidos mediante láser de Nd: YAG. // Steels and cast irons superficial modification by means of laser Nd: YAG.

    Directory of Open Access Journals (Sweden)

    R. Sagaró Z.

    2001-10-01

    Full Text Available Se presentan los resultados de los autores en el tratamiento térmico superficial con técnica láser (TTSL. Con el empleo deun láser de Nd: YAG se procedió al endurecimiento superficial de los aceros AISI 1045, W1, W112 y hierros fundidos detipo laminar y nodular. Los autores prestan atención a las rutas de endurecimiento superficial atendiendo a los parámetrosoperacionales del láser: potencia incidente en la zona de interacción (P y la velocidad de barrido del haz de láser (V. Deigual forma se establecen valoraciones acerca de las estructuras metalográficas obtenidas. En todos los casos se reportanvalores de microdureza Vickers que oscilan entre los 500-900 HV (incrementos de 3-4 veces respecto al substratooriginal. Los resultados obtenidos permiten establecer en todos los casos experimentados que el incremento de lavelocidad de barrido provocó una disminución de la profundidad de la capa endurecida. Las experiencias del TTSL en losaceros ensayados muestran una tendencia a la disminución de la profundidad del endurecimiento con el incremento delcontenido de carbono.Palabras claves: Endurecimiento superficial, parámetros de operación de láser., microdureza, profundidadde capa endurecida, de fallo, vibraciones.____________________________________________________________________________AbstractThis paper expose the experiences of researchers on the laser surface heat treatment. The hardening of AISI 1045, W1,W112 steels and cast irons flake and nodular was carried out by using a Nd: YAG laser. Operation parameters of laser, likebeam power (P and traverse speed of the laser spot (V are closely with hardening depth . Authors present some analysesabout metallographic studies. In all cases are reported Vickers microhardness about 500-900 HV (three or four times higherthan original substrates. Relations between microhardness and depth of hardening are presented for the processedmaterials. Experimental results showed that the increased

  1. La formación Capas Rojas: caracterización y génesis

    Directory of Open Access Journals (Sweden)

    Molina, J. M.

    1999-04-01

    Full Text Available The characteristics (lithofacies, biofacies, age, thickness, vertical and lateral relations, etc., and significance of the Capas Rojas Formation (Upper Cretaceous-Eocene are analysed. This formation crops out widely in the Subbetic (External Zones of the Betic Cordillera. The Capas Rojas Formation presents a great uniformity in the wide sectors of this cordillera and has its equivalent in facies and age, in the Scaglia Rossa Formation of the Apennines and southern Alps and also in equally analogous formations in other Alpine Mediterranean domains. From the available sedimentological and paleoecological data, mainly from the macrofossils (isolated rudists and echinoids content and from the ichnofacies analysis, it is concluded that its deposition took place in a hemipelagic marine environment with a moderate depth (a few hundreds of metres during a long interval of time (40-50 Ma with a very low sedimentation rate (a few millimetres per thousand years. From the analysis of the evolution of the continental margin in which was deposited, and of their equivalents in other Alpine domains, is deduced that the beginning of its deposition recorded the end of the differentiation in troughs and swells of these passive margins in the advanced stages of the rifting, so that this unit, in wide sector of the basin covered areas with an irregular topography in the bottom, mainly controlled by faults and slowly leveled them.Se analizan las características (litofacies, biofacies, edad, potencia, etc. de la Formación Capas Rojas (Cretácico superior-Eoceno que aflora extensamente en el Subbético, dentro de las Zonas Externas de la Cordillera Bética. Esta formación presenta una gran uniformidad de facies en amplios sectores de la cordillera y tiene su equivalente, en facies y en edad, en la Formación Scaglia Rossa de los Apeninos del centro de Italia y de los Alpes meridionales y en formaciones igualmente análogas en otros dominios alpinos mediterráneos. A

  2. Scanning electron microscopy of superficial white onychomycosis*

    OpenAIRE

    de Almeida Jr., Hiram Larangeira; Boabaid, Roberta Oliveira; Timm, Vitor; Silva, Ricardo Marques e; de Castro, Luis Antonio Suita

    2015-01-01

    Superficial white onychomycosis is characterized by opaque, friable, whitish superficial spots on the nail plate. We examined an affected halux nail of a 20-year-old male patient with scanning electron microscopy. The mycological examination isolated Trichophyton mentagrophytes. Abundant hyphae with the formation of arthrospores were found on the nail's surface, forming small fungal colonies. These findings showed the great capacity for dissemination of this form of onychomycosis.

  3. Treatment of superficial mycoses: review - part II*

    OpenAIRE

    Dias, Maria Fernanda Reis Gavazzoni; Bernardes-Filho, Fred; Quaresma-Santos, Maria Victória Pinto; Amorim, Adriana Gutstein da Fonseca; Schechtman, Regina Casz; Azulay, David Rubem

    2013-01-01

    Superficial fungal infections of the hair, skin and nails are a major cause of morbidity in the world. Choosing the right treatment is not always simple because of the possibility of drug interactions and side effects. The first part of the article discusses the main treatments for superficial mycoses - keratophytoses, dermatophytosis, candidiasis, with a practical approach to the most commonly-used topical and systemic drugs , referring also to their dosage and duration of use. Promising new...

  4. Scanning electron microscopy of superficial white onychomycosis.

    Science.gov (United States)

    Almeida, Hiram Larangeira de; Boabaid, Roberta Oliveira; Timm, Vitor; Silva, Ricardo Marques E; Castro, Luis Antonio Suita de

    2015-01-01

    Superficial white onychomycosis is characterized by opaque, friable, whitish superficial spots on the nail plate. We examined an affected halux nail of a 20-year-old male patient with scanning electron microscopy. The mycological examination isolated Trichophyton mentagrophytes. Abundant hyphae with the formation of arthrospores were found on the nail's surface, forming small fungal colonies. These findings showed the great capacity for dissemination of this form of onychomycosis. PMID:26560225

  5. Scanning electron microscopy of superficial white onychomycosis*

    Science.gov (United States)

    de Almeida Jr., Hiram Larangeira; Boabaid, Roberta Oliveira; Timm, Vitor; Silva, Ricardo Marques e; de Castro, Luis Antonio Suita

    2015-01-01

    Superficial white onychomycosis is characterized by opaque, friable, whitish superficial spots on the nail plate. We examined an affected halux nail of a 20-year-old male patient with scanning electron microscopy. The mycological examination isolated Trichophyton mentagrophytes. Abundant hyphae with the formation of arthrospores were found on the nail's surface, forming small fungal colonies. These findings showed the great capacity for dissemination of this form of onychomycosis. PMID:26560225

  6. Unión de soportes metálicos a superficies de hormigón

    Directory of Open Access Journals (Sweden)

    Fernández Cánovas, M.

    1972-09-01

    Full Text Available In this article are described the tests done in the Eduardo Torroja institute to find suitable adhesives to be used in the joining of metal supports to concrete surfaces of precast members. In these tests different types of adhesives were used on different surface finishes, proving that the adhesives which work best are the epoxy type, and the most suitable finish, concrete from which the weak layer of cement laitance has been removed.En este artículo se describen los ensayos realizados en el Instituto Eduardo Torreja para encontrar adhesivos adecuados con vistas a su utilización en la unión de soportes metálicos a superficies de hormigón de elementos prefabricados. En estos ensayos se han empleado distintos tipos de adhesivos aplicados sobre distintas terminaciones superficiales, comprobándose que los adhesivos que mejor se han comportado son los de tipo epoxi, y que la terminación más adecuada ha sido la del hormigón tratado para eliminar la capa débil de lechada de cemento superficial.

  7. Superficial Temporal Artery Pseudoaneurysm: A Case Report

    Science.gov (United States)

    Younus, Syed Muneeb; Imran, Muhammad; Qazi, Rabia

    2015-01-01

    Pseudoaneurysms of the superficial temporal artery are an uncommon vascular lesion of the external carotid system and most often the result of blunt head trauma. The frequency of pseudoaneurysms of the superficial temporal artery developing after craniotomy is exceedingly low and only a few cases have been reported. We present a case of pseudoaneurysm of this type in a 45-year-old male who underwent craniotomy for excision of meningioma. One month postoperatively, the craniotomy flap exhibited an enormous diffuse pulsate swelling. The suspected diagnosis of pseudoaneurysm arising from superficial temporal artery was confirmed on angiography. Surgical excision was done and no recurrences of the tumor or aneurysm were noted on subsequent follow up. PMID:26501064

  8. Etizolam-induced superficial erythema annulare centrifugum.

    Science.gov (United States)

    Kuroda, K; Yabunami, H; Hisanaga, Y

    2002-01-01

    Erythema annulare centrifugum (EAC) is characterized by slowly enlarging annular erythematous lesions. Although the origin is not clear in most cases, EAC has been associated with infections, medications, and in rare cases, underlying malignancy. We describe a patient who developed annular erythematous lesions after etizolam administration. The eruptions were typical of the superficial form of EAC, both clinically and histopathologically. The lesions disappeared shortly after discontinuation of the medication. Patch testing with etizolam gave positive results. To our knowledge this is the first reported case of etizolam-induced superficial EAC. PMID:11952667

  9. superficial por soldadura automática

    Directory of Open Access Journals (Sweden)

    Elvis López B.

    2007-01-01

    Full Text Available En el siguiente trabajo se evalúa el aumento de la resistencia al desgaste abrasivo de las superficies de trabajo de aperos para la labranza de suelos, luego de aplicar el recargue superficial por el método de soldadura automática por arco sumergida (SAAS, utilizando para ello un fundente cerámico obtenido a partir de la reconstitución de la escoria del propio proceso. Se realizan mediciones de macrodureza, microdureza y resitencia al desgaste, se determina además el índice de desgate en condiciones de campo, utilizando medios reales de labranza de suelos.

  10. Generación de capas de conversión con elementos de tierras raras sobre acero galvanizado

    Directory of Open Access Journals (Sweden)

    Arenas, M. A.

    2005-12-01

    Full Text Available Cerium conversion coatings are formed on commercial galvanized steel and a generation mechanism is suggested. The best conversion coatings were found using 10,000 ppm CeCl3·7H2O + 0,3 % vol. of H2O2 with a pH of 1.3. A cathodic potential, -100 mV versus corrosion potential, was applied during the treatment at a constant temperature of 43 °C. SEM micrographs have revealed a non uniform coating thickness between 1-2 μm. Polarization curves in 3.56 wt. % NaCl exhibited an inhibition power of about 94 % with respect to the galvanized steel. The proposed mechanism suggests that the Ce (III ions in the solution were oxidized by H2O2 to Ce (IV which then precipitated as CeO2. The applied voltage could cause a higher presence of Ce3+ in the film maybe due to an electroreduction process of cerium (IV in the film to cerium (III.

    En el presente trabajo, se desarrollan capas de conversión de cerio sobre un acero galvanizado comercial, proponiéndose un mecanismo de formación de las mismas. Las condiciones óptimas de generación de la capa se consiguieron empleando una disolución de 10.000 ppm de CeCl3·7H2O + 0,3 % vol. de H2O2 ajustando el pH a 1,3. A su vez, para mejorar la adherencia y reducir el tiempo de tratamiento se realizó, durante los 10 min del tratamiento, una activación potenciostática a -100 mV respecto al potencial de corrosión, manteniéndose la temperatura a 43 °C. El estudio del corte transversal de las muestras mediante microscopía electrónica de barrido reveló que las capas de cerio poseen un espesor no uniforme de 1-2 μm. Los resultados electroquímicos indicaron que las capas de cerio generadas ofrecían porcentajes de inhibición del orden del 94 % en cloruro sódico. Un posible mecanismo de formación de la capa de conversión sería que los iones de cerio (III en solución se

  11. Clinico-mycological profile of superficial mycoses

    Directory of Open Access Journals (Sweden)

    Mishra M

    1998-01-01

    Full Text Available Clinico-mycological study of 2743 clinically diagnosed cases of superficial mycoses attending skin and VD OPD of VSS Medical College during the year 1995 - 96 was conducted. Male predominance was observed. Highest incidence of tinea versicolor was found. T. rubrum was the commonest fungus isolated.

  12. Clinico-mycological profile of superficial mycoses

    OpenAIRE

    Mishra M; Mishra S; Singh P; Mishra B.

    1998-01-01

    Clinico-mycological study of 2743 clinically diagnosed cases of superficial mycoses attending skin and VD OPD of VSS Medical College during the year 1995 - 96 was conducted. Male predominance was observed. Highest incidence of tinea versicolor was found. T. rubrum was the commonest fungus isolated.

  13. Determinación de Tensiones Residuales Superficiales y en Capas por Difracción de RayosX

    OpenAIRE

    Steier, H. P.

    1997-01-01

    En el presente trabajo se lleva a cabo una revisión general de la técnica de medida de tensiones residuales superficiales y en capas por difracción de rayos X. La primera parte trata de revisar los fundamentos necesarios. Se explican la dirección de medida y la profundidad de información en la difracción de rayos X para poder entender cuales son los espaciados que medimos. También se revisan las relaciones elásticas tensión-deformación para comprender como se relacionan estos espaciados al es...

  14. Modelos bipolares, estilos de vida y capas medias en la historiografía social colombiana sobre el siglo XIX

    OpenAIRE

    Sergio Paolo Solano D.

    2014-01-01

    En este artículo se argumenta que la aplicación de un modelo bipolar en el análisis de la sociedad colombiana del siglo XIX lleva a simplificar la estratificación social y a desconocer la existencia de unas capas medias organizadas en torno a un estilo de vida en el que el honor y la proyección de una imagen social respetable eran la piedra angular. Propone ver lo popular como un espacio social y cultural que se dinamiza a partir de los conflictos entre los estilos de vida de sus diversos sec...

  15. Depósito de capas de nitruro de carbono mediante ablación láser

    Directory of Open Access Journals (Sweden)

    Soto, R.

    1998-04-01

    Full Text Available The preparation of carbon nitride thin films by ablation of different target compounds (graphite, guanazole in a reactive atmosphere of ammonia with an ArF excimer laser (193 nm is reported. The films were deposited on different substrates (silicon wafers and aluminium plates and were analysed with different techniques such as profilometry, Fourier transform infrared (FTIR and energy dispersive X-ray spectroscopy (EDX. For both targets, a comparative study of the influence of the ammonia total pressure on the growth rate, composition and properties of the obtained material has been done. A gradual nitrogen incorporation in the films with increasing ammonia pressure and also the presence of nitrogen bonded to carbon in different configurations (simple, double and/or triple bonds was observed. The use of guanazole targets leads to higher efficiency in the nitrogen incorporation and in the formation of simple C-N bonds.

    Se presenta la preparación de capas finas de nitruro de carbono mediante la ablación de diferentes tipos de blancos (grafito, guanazol en una atmósfera reactiva de amoniaco utilizando un láser de excímero de ArF (193 nm. Las capas se han depositado sobre diferentes soportes (obleas de silicio y aluminio y se han analizado empleando técnicas de caracterización básicas como la espectroscopia infrarroja mediante transformada de Fourier (FTIR, espectroscopia de rayos X por dispersión de energía (EDX y perfilometría. Se ha realizado, para los dos blancos utilizados, un estudio comparativo de la influencia de la presión total de amoniaco en la velocidad de depósito, composición y propiedades del material obtenido. Se ha observado en ambos casos la progresiva incorporación de nitrógeno en las capas con el aumento de la presión de amoniaco, estando el nitrógeno enlazado al carbono en diferentes configuraciones (enlaces simples, dobles y/o triples. La utilización del blanco de guanazol se muestra más eficiente en

  16. Evaluación del desempeño de redes neuronales artificiales para estimar propiedades de capas de pavimentos

    OpenAIRE

    Beltran, Gloria Inés; Romo, Miguel Pedro

    2014-01-01

    Una de las principales preocupaciones en la evaluación de la condición estructural de pavimentos flexibles en servicio, es la estimación de propiedades mecánicas de las capas, útiles para el diseño y toma de decisiones en los sistemas de gestión de carreteras. Este problema de identificación de parámetros es realmente complejo, debido al gran número de variables involucradas en el comportamiento de los pavimentos. Para esos fines, se ha considerado modelar la respuesta del pavimentos ante pru...

  17. Determinación cualitativa de giberelinas y auxinas por cromatografía de capa fina

    OpenAIRE

    Grolamys Castillo; Grisel Ortega; Viviana Carabeo; Grizel Delgado; Georgina Michelena

    2007-01-01

    Las fitohormonas son sustancias endógenas bioactivas sintetizadas por las plantas en concentraciones fisiológicas, con el fin de controlar diversos procesos metabólicos. Dentro de este grupo de sustancias, dos de las más importantes por su incidencia en el rendimiento y calidad de las cosechas son las Giberelinas (GAs) y las Auxinas. Diversas técnicas cromatográficas como la Cromatografía de Capa Fina (CCF), la Cromatografía de Gases (CG) y la Cromatografía Líquida de Alta Resolución (CLAR) h...

  18. EVALUACIÓN DE LOS DISPOSITIVOS A NIVEL DE LA CAPA 2, 3 y 4 DEL MODELO OSI.

    Directory of Open Access Journals (Sweden)

    Yralys Sulbaran

    2005-01-01

    Full Text Available En el siguiente articulo trata sobre tecnologías de interconexión de redes debido a que en los últimos años se ha notado el progresivo avance que han tenido las tecnologías y la convergencia de las mismas, desapareciendo rápidamente las diferencias para transferir, almacenar y procesar la información ocasionando de esta manera la interoperabilidad de las redes utilizando dispositivos tales como los routers y Switching, donde cada uno de ellos tienen sus propias características en relación al diseño, configuración y funcionamiento, de allí la necesidad de evaluar si los dispositivos de interconexión (Routers y Switches a nivel de la capa 2, 3 y 4 del modelo OSI, siendo este el titulo y objetivo general planteado en la investigación, el propósito de la investigación fue identificar y evaluar los routers y switch capa 2, 3 y 4 examinando el funcionamiento de los equipos y verificar el uso por parte de los operadores. Con respecto al tipo de investigación según su propósito es descriptiva y es un diseño de campo y un diseño no experimental se clasifica transeccional o transversal, el tipo de muestra es no probabilística, se utilizó el cuestionario y la observación directa como instrumento de recolección de datos siendo valido y confiable con un valor 0.72. Por último se dan las conclusiones que según los resultados obtenidos los operadores o administradores de red, tienen la suficiente capacidad para el manejo y control de las posibles fallas que puedan presentarse y disponen de los mecanismos y tecnologías necesarias para el buen funcionamiento de la red, en relación con lo switch capa 4, a un no están muy familiarizados con el mismo, se puede decir que desconocen un poco sobre esta tecnología al contrario de los otros dispositivos router, switch capa 2 y 3.Las recomendaciones van dirigidas a específicamente a los operadores y administradores de red.

  19. Superficial Urothelial Cancer in the Prostatic Urethra

    Directory of Open Access Journals (Sweden)

    Ziya Kirkali

    2006-01-01

    Full Text Available Transitional cell carcinoma (TCC is a multifocal disease of the urinary tract that can also involve the prostatic urethra (PU. The exact incidence of superficial involvement of the PU in patients with bladder TCC is not well known. Bladder TCC may involve the prostate in 12—40% of the patients and the degree of involvement can include urethral mucosa, ducts, acini, and stroma of the gland, which has been shown to affect the outcome. Risk factors for superficial urothelial cancer in the PU are high-grade, multifocal bladder TCC and presence of carcinoma in situ (CIS in the bladder. While visible tumors are easy to detect and resect, controversy still exists regarding the optimal technique to identify prostatic involvement by TCC. Prostatic urethral sampling by a transurethral resection biopsy or a cold-cup biopsy, particularly in the high-risk group of bladder cancer patients, has been recommended for detecting prostatic urethral involvement. Management of superficial prostatic involvement by TCC is also unclear. Currently, there is increasing recognition of the value of conservative treatment options with intravesical agents when there is superficial involvement of the PU. Particularly, intravesical bacillus Calmette-Guèrin (BCG seems to be an effective treatment alternative in the management of superficial involvement of the PU by TCC. Close follow-up by cystoscopy and PU biopsy at 3-month intervals, particularly in intermediate and high-risk patients who respond to intravesical therapy and in whom cystectomy is appropriate, is recommended in order to detect persistent tumor, recurrences, or progression.

  20. Optimización de láminas reticuladas de una capa

    Directory of Open Access Journals (Sweden)

    Orta, B.

    2008-09-01

    Full Text Available This article presents the reflection on optimum design in one layer lattice shells to cover large span spaces with different base geometries. The objective is to find parameters of form that have more effect on cost, in agreement with the Theory of Design of Structures (3,4, comparable to plane structures (4,12. To reach this aim, a program (8 has been created using Simulated Annealing (SA, a numerical approximation algorithm that finds solutions near optimum. The objective function used is extracted from the Theory of Design of Structures: structural volume. Its definition and characteristics will be seen. Diverse solutions to the numerical proposed examples are shown. These solutions solve similar problems changing the form of the plant to be covered. To finish, parameters of form from found solutions are displayed, and conclusions are extracted, such that SA is an appropriated method for this kind of problems.Este artículo muestra la reflexión sobre el diseño óptimo de laminas reticuladas de una sola capa en la cobertura de espacios de gran luz con diferentes bases. El objetivo es encontrar los parámetros que más efecto tienen en el coste de acuerdo con la Teoría de Diseño de Estructuras (3,4, de manera comparable a estructuras planas (4,12. Para alcanzar este propósito se ha creado un programa (8 que utiliza el Recocido Simulado (SA, una técnica de aproximación numérica que encuentra soluciones cercanas al óptimo. La función objetivo utilizada se extrae de la Teoría de Diseño de Estructuras: volumen estructural, se verán su definición y características. Se muestran diversas soluciones a los ejemplos numéricos propuestos; estas soluciones resuelven problemas similares cambiando la forma de la planta a cubrir. Para terminar se muestran los parámetros de forma obtenidos a partir del análisis de las soluciones, y se extraen conclusiones como que el SA es un método apropiado para esta clase de problemas.

  1. Análisis no lineal de mallas espaciales de doble capa

    Directory of Open Access Journals (Sweden)

    Estévez Cimadevila, Francisco Javier

    1991-04-01

    Full Text Available This paper is related to the topic developed in my RH.D. thesis. A new model is proposed to describe the non-linear behaviour of straight pin-jointed compression members. Sucti a method Is based upon obtaining the complete constitutive equations in the case of circular hollow sections. The stability functions of imperfect bars and the analytical formulation of the post-buckiing behaviour are obtained by taking the exact expression of the curvature in the integratlon of the differential equation of the elastic. The linearization of the constitutive relationships and the application of an incremental iterative model based upon the modification of the elasticity of the bars at critical point allows us to consider the non-linear analysis of the double layer space grids. The models of analysis proposed here have been applied to a wide variety of trusses with different characteristics and typologies, some examples of which accompany this paper.

    Este artículo corresponde al tema de investigación desarrollado en mi tesis doctoral. Se plantea un nuevo modelo para describir el comportamiento no lineal de piezas rectas biarticuladas sometidas a compresión, basado en la obtención de las ecuaciones constitutivas en el caso de los perfiles tubulares huecos de sección circular. Se obtienen las funciones de estabilidad de barras imperfectas y la formulación analítica del comportamiento postpandeo tomando la expresión exacta de la curvatura en la integración de la ecuación diferencial de la elástica. La linearización de las leyes constitutivas y la aplicación de un modelo incremental Iterativo basado en la modificación del módulo de elasticidad de las barras en estado crítico permite abordar el análisis no lineal de las mallas espaciales de doble capa. Los modelos de análisis propuestos se aplicaron a una amplia variedad de mallas de diversas tipologías y características de las que se acompañan algunos ejemplos en el artículo.

  2. Régimen térmico y variabilidad espacial de la capa activa en isla decepcion, Antártica

    Directory of Open Access Journals (Sweden)

    Gabriel Goyanes

    2014-03-01

    Full Text Available El programa de monitoreo de capa activa (CALM fue desarrollado en las últimas décadas con la finalidad de comprender el impacto del cambio climático sobre los ambientes con permafrost. Este trabajo analiza los resultados obtenidos, en los últimos seis años, de los sitios CALM-S Irizar, Cráter Lake y Refugio Chileno, ubicados en Isla Decepción. En ellos se ha medido el espesor, el estado térmico y la distribución espacial de la capa activa. En los sitios Irizar y Refugio Chileno la evolución del espesor de capa activa varió interanualmente sin una clara tendencia dentro del corto período analizado; por el contrario, el sitio Cráter Lake evidenció una tendencia a la disminución de espesor. La distribución espacial como el espesor de dicha capa en los tres sitios de monitoreo, mostraron estar condicionados principalmente por la potencia de la cubierta de nieve, la litología y la exposición a los vientos. El relieve, la topografía de detalle, la orientación de las laderas frente a la radiación solar incidente, ejercieron un control menor sobre esta distribución. El estado térmico de la capa activa evidenció el control ejercido sobre ella de la temperatura del aire y de la cubierta nival. Así bajo reducidos espesores de nieve, el modelo de penetración en profundidad de la isoterma de 0 ºC, ha permitido aproximar satisfactoriamente el espesor de capa activa.

  3. Modelos bipolares, estilos de vida y capas medias en la historiografía social colombiana sobre el siglo XIX

    Directory of Open Access Journals (Sweden)

    Sergio Paolo Solano D.

    2014-01-01

    Full Text Available En este artículo se argumenta que la aplicación de un modelo bipolar en el análisis de la sociedad colombiana del siglo XIX lleva a simplificar la estratificación social y a desconocer la existencia de unas capas medias organizadas en torno a un estilo de vida en el que el honor y la proyección de una imagen social respetable eran la piedra angular. Propone ver lo popular como un espacio social y cultural que se dinamiza a partir de los conflictos entre los estilos de vida de sus diversos sectores.Palabras Clave: Capas medias; estilo de vida; honor; modelo bipolar. Bipolar models, lifestyles and middle Colombian social historiography on the nineteenth centuryAbstractThis article argues that the application of a bipolar model in the analysis of nineteenth-century Colombian society is to simplify the social stratification to deny the existence of middle classes organized around a lifestyle in which the honor and projecting a respectable social image were the cornerstone. Proposes more popular as a social and cultural space that is energized from the conflict between the lifestyles of its various sectors.Keywords: Middle class; lifestyle; honor; bipolar model.

  4. A proteomic approach for studying insect phylogeny: CAPA peptides of ancient insect taxa (Dictyoptera, Blattoptera as a test case

    Directory of Open Access Journals (Sweden)

    Gäde Gerd

    2009-03-01

    Full Text Available Abstract Background Neuropeptide ligands have to fit exactly into their respective receptors and thus the evolution of the coding regions of their genes is constrained and may be strongly conserved. As such, they may be suitable for the reconstruction of phylogenetic relationships within higher taxa. CAPA peptides of major lineages of cockroaches (Blaberidae, Blattellidae, Blattidae, Polyphagidae, Cryptocercidae and of the termite Mastotermes darwiniensis were chosen to test the above hypothesis. The phylogenetic relationships within various groups of the taxon Dictyoptera (praying mantids, termites and cockroaches are still highly disputed. Results Tandem mass spectrometry of neuropeptides from perisympathetic organs was used to obtain sequence data of CAPA peptides from single specimens; the data were analysed by Maximum Parsimony and Bayesian Interference. The resulting cladograms, taking 61 species into account, show a topology which is in general agreement with recent molecular and morphological phylogenetic analyses, including the recent phylogenetic arrangement placing termites within the cockroaches. When sequence data sets from other neuropeptides, viz. adipokinetic hormones and sulfakinins, were included, the general topology of the cladogram did not change but bootstrap values increased considerably. Conclusion This study represents the first comprehensive survey of neuropeptides of insects for solely phylogenetic purposes and concludes that sequences of short neuropeptides are suitable to complement molecular biological and morphological data for the reconstruction of phylogenetic relationships.

  5. Estudio de soluciones precursoras para el crecimiento de capas superconductoras gruesas por el método de deposición de soluciones químicas

    OpenAIRE

    Romà Buyreu, Nieves

    2015-01-01

    Esta tesis se centra en la síntesis de soluciones de trifluoroacetatos de itrio, bario y cobre para el crecimiento de capas epitaxiales de YBa2Cu3O7 mediante el método de descomposición metalorgánica (MOD) de deposición de soluciones químicas (CSD). Este método es barato, escalable y ha demostrado altas prestaciones en capas superconductoras delgadas (≈300nm). La fabricación de cintas epitaxiales de óxidos superconductores es un campo de gran interés debido a la gran variedad de aplicaci...

  6. capA, a cspA-like gene that encodes a cold acclimation protein in the psychrotrophic bacterium Arthrobacter globiformis SI55.

    OpenAIRE

    Berger, F.; Normand, P.; Potier, P

    1997-01-01

    By use of Arthrobacter globiformis SI55, a psychrotrophic bacterium capable of growth between -5 and +32 degrees C, we cloned and sequenced capA, a gene homologous to cspA encoding the major cold shock protein in Escherichia coli. The deduced protein sequence has a high level of identity with the sequences of other CspA-related proteins from various sources, and no particular residue or domain that could be specific to cold-adapted microorganisms emerged. We show that CapA was produced very r...

  7. Régimen térmico y variabilidad espacial de la capa activa en isla decepcion, Antártica

    OpenAIRE

    Gabriel Goyanes; Gonçalo Vieira; Alberto Caselli; Carla Mora; Miguel Ramos; Miguel Angel de Pablo; Mário Neves; Fernando Santos; Ivo Bernardo; David Gilichinsky; Andrey Abramov; Vanessa Batista; Raquel Melo; Alexandre Nieuwendam; Alice Ferreira

    2014-01-01

    El programa de monitoreo de capa activa (CALM) fue desarrollado en las últimas décadas con la finalidad de comprender el impacto del cambio climático sobre los ambientes con permafrost. Este trabajo analiza los resultados obtenidos, en los últimos seis años, de los sitios CALM-S Irizar, Cráter Lake y Refugio Chileno, ubicados en Isla Decepción. En ellos se ha medido el espesor, el estado térmico y la distribución espacial de la capa activa. En los sitios Irizar y Refugio Chileno la evolución ...

  8. Photodynamic therapy: superficial and interstitial illumination

    Science.gov (United States)

    Svanberg, Katarina; Bendsoe, Niels; Axelsson, Johan; Andersson-Engels, Stefan; Svanberg, Sune

    2010-07-01

    Photodynamic therapy (PDT) is reviewed using the treatment of skin tumors as an example of superficial lesions and prostate cancer as an example of deep-lying lesions requiring interstitial intervention. These two applications are among the most commonly studied in oncological PDT, and illustrate well the different challenges facing the two modalities of PDT-superficial and interstitial. They thus serve as good examples to illustrate the entire field of PDT in oncology. PDT is discussed based on the Lund University group's over 20 yr of experience in the field. In particular, the interplay between optical diagnostics and dosimetry and the delivery of the therapeutic light dose are highlighted. An interactive multiple-fiber interstitial procedure to deliver the required therapeutic dose based on the assessment of light fluence rate and sensitizer concentration and oxygen level throughout the tumor is presented.

  9. Volumetric and superficial characterization of carbon activated

    International Nuclear Information System (INIS)

    The activated carbon is the resultant material of the calcination process of natural carbonated materials as coconut shells or olive little bones. It is an excellent adsorbent of diluted substances, so much in colloidal form, as in particles form. Those substances are attracted and retained by the carbon surface. In this work is make the volumetric and superficial characterization of activated carbon treated thermically (300 Centigrade) in function of the grain size average. (Author)

  10. Método Propuesto para Estimar la Altura de Capa de Mezcla en la Atmósfera, con ayuda de la Aviación

    OpenAIRE

    Rodolfo Trejo Vázquez; Leticia Villagómez Parra

    2012-01-01

    Se presenta un procedimiento, basado en un desarrollo matemático propio, el cual es aplicado al método de Holzworth, para estimar altura de capa de mezcla en la atmósfera utilizando datos proporcionados por aviones comerciales.

  11. Estructura electrónica de superficies: estados de superficie y estados resonantes del calcio

    OpenAIRE

    Herrera, H; César Mora

    2006-01-01

    En este artículo presentamos un estudio detallado de la estructura electrónica de bandas de superficies orientadas (001) y (110) de cristales cúbicos centrados en la cara del Ca. Para nuestro estudio utilizamos la aproximación de enlace fuerte y el método de acoplamiento de la función de Green de superficie. Primero, construimos hamiltonianos de enlace fuerte en el formalismo de Slater Koster (SK). Utilizamos una base ortogonal de nueve orbitales atómicos (spd) por átomo en la celda ...

  12. Estudio teórico de la distribución catiónica en la capa octaédrica de silicatos laminares

    Science.gov (United States)

    Hernández-Laguna, A.

    Los silicatos laminares son unos minerales de gran extensión en la corteza de nuestro y otros planetas, y se ha detectado su presencia en masas de partículas de polvo interplanatario. Están formados por láminas estructuradas en una capa tetraedros de sílice y una de octaédros de oxihidroxido de aluminio. Según el número de capas y la disposición aparecen distintos minerales. Además, también pueden aparecer distintos minerales como consecuencia de la substitución isomórfica de cationes en la capas, en particular, Al(III) por Si en la capa tetraédrica y Fe(III) y/o Mg(II) por Al(III) en la octaédrica. Cuando el catión substituyente presenta un estado de oxidación más bajo que al que substituye genera carga negativa que tiene que neutralizarse con cationes que se disponen en el espacio interlaminar. En este trabajo vamos a estudiar, mediante distintos métodos computacionales, las distribuciones de dichos cationes de substitución en la capa octaédrica de silicatos laminares 2:1 (dos capas tetraédricas y en medio una octaédrica), en particular, en los minerales esmectitas e ilitas. En primer lugar, estudiaremos la distribución de dichos cationes en la capa octaédrica en un modelo de gas reticular por el método de Monte Carlo, minimizando el número de pares de cationes Al, Fe y Mg de nuestro modelo con respecto a los procedentes de resultados espectroscópicos de muestras de minerales. Posteriormente, y mediante un modelo de potenciales empíricos, estudiamos la energética de las distribuciones binarias en dichos minerales, generando unos potenciales de interacción intercambio a dos y tres cationes (extrapolables a cualquier filosilicato) que son la base para una investigación Monte Carlo-"simulated-annealing" en la que se encuentran las transiciones de fase y las estructuras ordenadas, dependiendo dichas estructuras y la temperatura de cambio de fase de la de la naturaleza y concentración de los cationes de substitución. También se han

  13. Análisis cualitativo de propóleos cubanos por cromatografía en capa delgada

    OpenAIRE

    Campo Fernández, Mercedes; Cuesta Rubio, Osmany; Márquez Hernández, Ingrid; Rosado Pérez, Arístides; Montes de Oca Porto, Rodny

    2008-01-01

    Se propone una técnica analítica de Cromatografía en Capa Delgada (CCD), utilizando placas de Sílica gel GF254, como fase móvil la mezcla hexano:acetato de etilo (7:3) y como reveladores Ce(SO4)2/H2 SO4 y vainillina/H2 SO4. Esta técnica resultó válida, permitiendo la identificación y diferenciación de los tres tipos de propóleos cubanos hasta el momento identificados. Se estudiaron 60 muestras que fueron agrupadas en propóleos pardos, rojos y amarillos, según estudios cromatográficos y espect...

  14. RADAR DE ONDA SUPERFICIAL DE HF (HFSWR)

    OpenAIRE

    Ariel Leiva L; Guillermo Fernández S; Raimundo Villarroel V; Emilio Quezada V

    2005-01-01

    Este trabajo pretende presentar las características generales más importantes de un sistema de vigilancia que usa radar de Onda Superficial de HF (HFSWR). Actualmente, la Escuela de Ingeniería Eléctrica de la Universidad Católica de Valparaíso, en conjunto con la Armada de Chile, se encuentran comenzando los estudios acerca de esta tecnología para plantear variantes acerca del mismo. Los primeros estudios, que recién comienzan, tratan sobre el arreglo de elementos de recepción y los algoritmo...

  15. Superficial tension: experimental model with simple materials

    OpenAIRE

    2012-01-01

    En este trabajo se presenta una propuesta didáctica basada en una actividad experimental utilizando materiales de muy bajo costo, orientada a lograr que los alumnos comprendan e interpreten el fenómeno de tensión superficial conjuntamente con la importancia de la modelización en ciencias. Tiene como objetivo principal de enseñanza acercar al alumno a la mecánica de los fluidos estáticos y las fuerzas intermoleculares, combinando contenidos científicos con cuestiones cercanas al es...

  16. Superficial siderosis of the CNS. MR imaging

    Energy Technology Data Exchange (ETDEWEB)

    Uchino, Akira; Matsuo, Yoshiaki; Kato, Akira; Kudo, Sho [Saga Medical School, Nabeshima (Japan); Matsumoto, Shunichi

    1997-11-01

    Six cases of superficial siderosis of the CNS are reported here. There were 4 men and 2 women, whose ages ranged from 25 to 69 years. The clinical presentations included bilateral sensorineural hearing loss (6), cerebellar ataxia (4), and myelopathy (2). Typical hypointense rims were observed over the brain surface on T2-weighted images. Five of the 6 patients had atrophy of the superior cerebellar vermis. The spinal cord was involved in 5 of the 6 patients. On T1-weighted images, hyperintense rims were demonstrated over the brain surface in 3 of the 6 patients. This finding has not been previously reported. (author)

  17. Importance of soil contamination in Hylocomium Splendens used as biomonitor of atmospheric trace element deposition in remote areas; Importanza della contaminazione da suolo in Hylocmium Splendens utilizzato come biomonitor della deposizione atmosferica di elementi in traccia in zone remote

    Energy Technology Data Exchange (ETDEWEB)

    Spazzano, P.; Bari, A.; Olivetta, A. [ENEA, Saluggia, VC (Italy). Dipt. Ambiente, Sez. Componente Biotica degli Ecosistemi

    1999-09-01

    In the framework of a monitoring programme in rural areas using Hylocomium Splendens as biomonitor, several mass and soil samples were collected in different sampling stations. The soil content of analysed moss samples ranged from 1.7 to 7.7% on a dry mass basis as evaluated using aluminium as an indicator of soil retention. Soil particles entrapped by mosses affect the contamination levels of trace elements contributing to the variability of element concentrations. The normalisation of mass concentrations to the element concentrations in surface soils by calculating enrichment factor (EF) does not seem to be able to discriminate between soil-derived and anthropogenic contribution of trace elements. [Italian] Nell'ambito di un progetto di monitoraggio della deposizione atmosferica di metalli pesanti in zone rurali sono stati raccolti in differenti stazioni campioni di muschio e di suolo superficiale. L'articolo analizza i risultati ottenuti: le particelle di suolo ritenute nei muschi condizionano notevolmente i livelli di metalli in traccia di interesse ambientale e contribuiscono alla variabilita' delle concentrazioni. La normalizzazione rispetto alle concetrazioni presenti nel suolo e calcolata mediante il fattore di arricchimento (FA) non sembra in grado di differenziare tra contributo di origine terrigena ed eventuale contributo antropico.

  18. Scaling control in superficial installations at the Las Tres Virgenes, geothermal field, BCS; Control de incrustacion en instalaciones superficiales del campo geotermico de Las Tres Virgenes, BCS

    Energy Technology Data Exchange (ETDEWEB)

    Tapia Salazar, Ruth [Comision Federal de Electricidad (Mexico)]. E-mail: ruth.tapia@cfe.gob.mx

    2007-01-15

    Silica scaling is one of the most important problems in the Las Tres Virgenes geothermal field. It affects not only the superficial installations, like brine injection pipelines, but also the injection wells where it reduces injection capacity. Separated brine passes from production wells to injection wells by means of steel pipelines 10 and 14 inches in diameter. The pipelines are affected by silica scaling that occurs when the two-phase fluid is discharged at atmospheric pressure and the separated brine is cooled and concentrated and then over saturated with amorphous silica. Even when the pipelines were cleaned periodically, it was necessary to implement a technique for prevent scaling. Two methods considered appropriate to the specific field conditions were studied, and finally the technique of modifying the brine pH was adopted. After over a year of using this technique in the general injection system, no mechanical cleaning of the pipelines has been necessary-and once cleaning was needed at least every third day. This represents an important improvement in the steam supply system. [Spanish] Uno de los problemas mas importantes en el campo geotermico de Las Tres Virgenes es la incrustacion por silice, la cual afecta no solo a instalaciones superficiales como lineas de inyeccion de salmuera, sino tambien a los pozos inyectores al reducir su capacidad de aceptacion. El agua producida por los pozos productores se conduce hasta los pozos inyectores por medio de tuberias de acero al carbon de 10 y 14 pulgadas de diametro, que se ven afectadas por la incrustacion de silice. La incrustacion ocurre debido a que cuando el fluido en dos fases es descargado a presion atmosferica, la salmuera separada, enfriada y concentrada, esta usualmente sobresaturada con respecto a la solubilidad de la silice amorfa. Aunque las tuberias se limpiaban mecanicamente, fue necesario seleccionar una tecnica para prevenir la incrustacion, para lo cual se estudiaron dos de los metodos que

  19. Caracterización de la capa de boruros formada durante la austenización de un hierro nodular austemperizado//Characterization of borides coating formed during austenitization of an austempered ductile iron

    OpenAIRE

    Urbano Ordóñez‐Hernández; Sarah Parada-de-la-Puente; Carlos Figueroa - Hernández; Francisco-J. Mondelo-García; Arturo Barba-Pingarrón; Alfredo del-Castillo-Serpa

    2015-01-01

    En este trabajo se ha investigado el efecto de la austenitización y el borurado simultáneos, a 950 ºC, en la microestructura, la microdureza Vickers y el espesor de la capa borurada en medio líquido de un hierro nodular austemperizado no aleado. Se demostró que es posible obtener una capa de boruros de hierro muy bien estructurada con la microdureza Vickers suficientemente alta (1400 HV)y con adecuado espesor de capa de 67 μm, sobre un sustrato de ausferrita típico de las fundiciones nodulare...

  20. Condiciones de la superficie deslizamiento con falla

    Directory of Open Access Journals (Sweden)

    María Cecilia Sierra B.

    2011-06-01

    Full Text Available Se modelan seis (6 taludes can diferentes ángulos de inclinación y peso unitario de 1.8 ton/m3, módulo de Young de 500 ton/m2 y relación de Poisson de 0.45. En cada uno de estos taludes se calculan los esfuerzos a través del talud y se determinan los puntos que están sometidos a mayores esfuerzos cortantes, correspondiendo estos a los estados de esfuerzos mas críticos, La ubicación de estos puntos es por donde comenzará y terminará la superficie de falla. Se obtiene un gráfico de diseño que permite obtener la pendiente máxima que debe tener un talud para que no se presente falla local en ningún punto.

  1. Corneal endothelial changes in superficial epithelial keratopathy.

    Science.gov (United States)

    Brooks, A M; Grant, G; Gillies, W E

    1986-05-01

    A series of five cases is described in which superficial punctate keratopathy was associated with endothelial cell changes. The most striking change was the presence of dark areas or blebs, usually two to four cell diameters in extent. There was also distortion and crumpling of the corneal endothelium, mild pleomorphism and polymegathism of the endothelial cells, with a reduced cell count in some cases. These blebs have previously been reported in hard and soft contact lens wearers and are due to intercellular oedema with separation of endothelial cells from Descemet's membrane. Anoxia and interference with osmosis have been proposed as possible mechanisms for the production of these blebs, but our cases demonstrate that fine disruption of the corneal epithelium can affect the integrity of the corneal endothelium and may lead to significant damage over a long period of time. PMID:3801208

  2. Andreas Vesalius' 500th Anniversary: Initiation of the Superficial Facial System and Superficial Musculoaponeurotic System Concepts.

    Science.gov (United States)

    Brinkman, Romy J; Hage, J Joris

    2016-02-01

    Because of their relevance for liposuction and rhytidectomies, respectively, the superficial fascial system (SFS) and superficial musculoaponeurotic system (SMAS) have been thoroughly studied over the past decennia. Although it is well known that the SMAS concept was introduced by Tessier in 1974, it remains unknown who first properly described the stratum membranosum of the SFS. In light of the 500th birthday of Andreas Vesalius (1515-1564), we searched his 1543 masterwork De Humani Corporis Fabrica Libri Septem and related work for references to these structures. We found ample reference to both structures as the membrana carnosa (or fleshy membrane) in his works and concluded that Vesalius recognized the extension, nature, and functions of the stratum membranosum of the SFS, as well as its more musculous differentiation as the SMAS in the head and neck area, and the dartos in the perineogenital area. In doing so, Vesalius recorded most details of the SFS and SMAS concepts avant la lettre. PMID:26761152

  3. Volumetric and superficial characterization of carbon activated; Caracterizacion volumetrica y superficial de carbon activado

    Energy Technology Data Exchange (ETDEWEB)

    Carrera G, L.M.; Garcia S, I.; Jimenez B, J.; Solache R, M.; Lopez M, B.; Bulbulian G, S.; Olguin G, M.T. [Departamento de Quimica, Gerencia de Ciencias Basicas, Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    2000-07-01

    The activated carbon is the resultant material of the calcination process of natural carbonated materials as coconut shells or olive little bones. It is an excellent adsorbent of diluted substances, so much in colloidal form, as in particles form. Those substances are attracted and retained by the carbon surface. In this work is make the volumetric and superficial characterization of activated carbon treated thermically (300 Centigrade) in function of the grain size average. (Author)

  4. Recent developments in the dosimetry of superficial tissues

    International Nuclear Information System (INIS)

    The biological basis of current dosimetry techniques for superficial tissues is presented and the areas of biological uncertainty which need to be clarified are identified. Examples are provided of practical situations in which potential skin exposure is of concern and recent developments of dosimetry techniques for superficial exposures are reviewed with particular reference to Beta particles and low energy x-rays. (author)

  5. Modelo predictivo del espesor de la capa de óxido y microdureza en aluminio Al3003-B14 y Al6063-T6 anodizado usando análisis multifactorial Oxide film thickness and microhardness prediction model of Al3003-B14 and Al6063-T6 anodized aluminum using multifactorial analysis

    Directory of Open Access Journals (Sweden)

    Leonardo Eladio Vergara Guillén

    2011-08-01

    Full Text Available En esta investigación se modela a partir de los parámetros del proceso el espesor de la capa de óxido y la microdureza de los aluminios Al3003 y Al6063 anodizados. Para ello se realizaron estudios de la microdureza y espesor de capa de la superficie anodizada, utilizando técnicas de análisis multifactorial y diseño robusto. Se establecieron los siguientes niveles de los parámetros del proceso: temperatura [15 °C, 25 °C], tiempo [30 min; 60 min], concentración de electrolito [1,2 M; 2 M], densidad de corriente [1 Amp/dm²; 3 Amp/dm²], aluminio [Al3003,Al6063] y como variable de ruido, la deformación plástica [0%, 10%, 20%, 30%]. Se propuso un diseño fraccionado 2(7-2 mixto, con el cual se efectuó un total de 48 pruebas usando soluciones electrolíticas de ácido sulfúrico. La medición de microdureza se realizó con un indentador Vickers con carga de 400 g; el espesor de la capa de óxido se captó mediante microscopia electrónica. A los resultados se les realizó un análisis de varianza (ANOVA, para determinar los factores significativos y la robustez de los efectos. Se encontraron resultados de microdureza [HV] [85,74-308,87]; y espesor de óxido [µm] [12,82- 94,69]. Finalmente, se muestran los modelos de predicción de cada una de las respuestas en función de los factores significativos estas ecuaciones permitirán seleccionar la microdureza y espesor de la capa de óxido para cumplir los requerimientos de un producto particular mediante una selección apropiada de los parámetros del proceso.In this research, the thickness of the oxide layer and the microhardness of anodized aluminum Al3003 and Al6063 are modeled based on process parameters. To this end, studies of the microhardness and the thickness layer of the anodized surface were made, via techniques of multifactorial analysis and robust design. The following levels of the process parameters were established: temperature [15°C, 25°C], time [30min; 60min

  6. Dispersión sísmica por presencia de capas someras de alta velocidad: modelamiento con diferencias finitas

    Directory of Open Access Journals (Sweden)

    Céspedes Sandra

    2002-08-01

    estudia el efecto de la dispersion sísmica por la presencia de capas someras de alta velocidad, con contrastes y espesores variables, y su influencia en la información sísmica. A diferencia de los métodos convencionales de eliminacion de ruido de base fundamentalmente matemática, por ejemplo: F-K, Radón, se aplica un esquema determinístico basado en el modelamiento de propagación de ondas que reproduce las señales no deseadas (Ernst et al., 1998; Blonk et al., 1995; Blonk and Hermann, 1994. El entendimiento detallado del fenómeno que genera estas señales permite discernir lo que se considera ruido y, por tanto, definir estrategias para su atenuación (Lamer et al., 1983. Por la presencia de capas someras de alta velocidad, gran parte de la energía sísmica original se dispersa en estas capas y solo una pequeña fracción se transmite al interior de la Tierra, generando ruido coherente que enmascara la información proveniente de los reflectores mas profundos (Leslie and Evans, 1999. Se diseño un modelo 20 y se obtuvieron varios sismogramas sintéticos, La simulación muestra el mecanismo de dispersión relacionado con la inversion de velocidad en las capas mas someras, lo que permite caracterizar su influencia sobre los registros sísmicos. La información no deseada (ruido es sustraída de la que se considera información. Los resultados obtenidos en este trabajo se circunscriben al análisis de datos sintéticos.

  7. Aplicación de un puente LCR en la caracterización de superficies de níquel tratadas voltamperométricamente en medio ácido en ausencia y presencia de ion cloruro

    Directory of Open Access Journals (Sweden)

    Gregori, J.

    2003-10-01

    Full Text Available Impedance spectra for nickel electrodes at his corrosion potential after voltammetric treatment in acid media has been obtained. A LCR bridge has been used, controlling the applied potential by means of a potentiostat. The passive layer, generated after successive potential scans, has been characterized by means of the interfacial double layer capacitance and the faradaic impedance. The generalized corrosion, and also the localized attack, have been observed by means of scanning electron microscopy (SEM, whilst the scanning tunnelling microscopy (STM has been used in order to realize the morphological analysis of the surfaces. In this way we want to correlate the morphological changes in the electrode surface after the successive scans in the acid media in absence and in presence of chloride with the impedance electrochemical response of the interface. When chloride is present in the acid media the charge transport across the interface is less impeded. The localized corrosion damages the passive layer electrogenerated after successive scans.

    Se obtuvieron espectros de impedancias de electrodos de níquel a su potencial de corrosión, tras su tratamiento voltamperométrico en medio ácido. Para ello, se utilizó un puente LCR controlando el potencial aplicado mediante un potenciostato. La capa de pasivado, generada tras ciclados sucesivos de potencial, se caracterizó a través de los valores de la capacidad interfacial de doble capa y de los de impedancia faradaica. La corrosión generalizada y también la localizada se observaron mediante microscopía electrónica de barrido (SEM, mientras que se utilizó la microscopía de efecto túnel (STM para realizar el análisis morfológico de las superficies. De este modo, se pretende correlacionar los cambios morfológicos producidos en la superficie electródica tras ciclados sucesivos en medio ácido en presencia y ausencia de iones cloruro, con la respuesta electroquímica de impedancias de

  8. RADAR DE ONDA SUPERFICIAL DE HF (HFSWR

    Directory of Open Access Journals (Sweden)

    Ariel Leiva L

    2005-12-01

    Full Text Available Este trabajo pretende presentar las características generales más importantes de un sistema de vigilancia que usa radar de Onda Superficial de HF (HFSWR. Actualmente, la Escuela de Ingeniería Eléctrica de la Universidad Católica de Valparaíso, en conjunto con la Armada de Chile, se encuentran comenzando los estudios acerca de esta tecnología para plantear variantes acerca del mismo. Los primeros estudios, que recién comienzan, tratan sobre el arreglo de elementos de recepción y los algoritmos de conformación digital de haz (“beamforming”. Este trabajo abordará, además, resultados de estos estudios.This work presents the most important characteristics of a system of surveillance based on High Frequency Surface Wave Radar (HFSWR. Nowadays, the School of Electrical Engineering (Universidad Católica de Valparaiso, Chile together with the Chilean Navy, are beginning to study the HFSWR technology in order to establish the feasibility of its application in the coast of Chile. The first stage of this study, which recently had began, focuses on the arrangement of the receiving system elements and the algorithms of digital conformation of the receiving beam (beamforming.

  9. UNILATERAL INCOMPLETE SUPERFICIAL PALMAR ARCH: A CASE REPORT

    Directory of Open Access Journals (Sweden)

    Subhankar Chakraborty

    2015-12-01

    Full Text Available The functional importance of hand is revealed by its rich vascularity contributed by superficial and deep palmar arches (SPA and DPA.Superficial palmar arch is located superficial to flexor tendons, and deep palmar arch deep to lumbrical muscles. Variations are found more often in SPA than DPA, later being more or less constant. During routine undergraduate dissection, we observed, unilateral incomplete SPA being formed by superficial palmar branches of ulnar and radial artery in the right hand of a male cadaver. These two arteries remained independent without anastomosis forming incomplete arch (SPA.The superficial branch of ulnar artery entered hand superficial to flexor retinaculum and supplied middle, ring and little finger by three branches. The superficial branch of radial artery via its two branches supplied index finger and thumb. Classical SPA formation was seen on left side. The presence of an incomplete SPA as in this case is a potential danger in RA harvesting for CABG.Variations in SPA play a pivotal role in microvascular surgical procedures of hand, RAinterventions and arterial graft applications.

  10. Prevalence of superficial siderosis following singular, acute aneurysmal subarachnoid hemorrhage

    Energy Technology Data Exchange (ETDEWEB)

    Lummel, N.; Bochmann, K. [Ludwig-Maximilian-University, Department of Neuroradiology, Klinikum Grosshadern, Munich (Germany); Bernau, C. [Leibniz-Rechenzentrum, Munich (Germany); Thon, N. [Ludwig-Maximilian-University, Department of Neurosurgery, Klinikum Grosshadern, Munich (Germany); Linn, J. [Technical University, Department of Neuroradiology, Klinikum Dresden, Dresden (Germany)

    2015-04-01

    Superficial siderosis is presumably a consequence of recurrent bleeding into the subarachnoid space. The objective of this study was to assess the prevalence of superficial siderosis after singular, aneurysmal subarachnoid hemorrhage (SAH) in the long term. We retrospectively identified all patients who presented with a singular, acute, aneurysmal SAH at our institution between 2010 and 2013 and in whom a magnetic resonance imaging (MRI) including T2*-weighted imaging was available at least 4 months after the acute bleeding event. MRI scans were judged concerning the presence and distribution of superficial siderosis. Influence of clinical data, Fisher grade, localization, and cause of SAH as well as the impact of neurosurgical interventions on the occurrence of superficial siderosis was tested. Seventy-two patients with a total of 117 MRIs were included. Mean delay between SAH and the last available MRI was 47.4 months (range 4-129). SAH was Fisher grade 1 in 2 cases, 2 in 4 cases, 3 in 10 cases, and 4 in 56 cases. Superficial siderosis was detected in 39 patients (54.2 %). In all patients with more than one MRI scan, localization and distribution of superficial siderosis did not change over time. Older age (p = 0.02) and higher degree of SAH (p = 0.03) were significantly associated with the development of superficial siderosis. Superficial siderosis develops in approximately half of patients after singular, aneurysmal SAH and might be more common in patients with an older age and a greater amount of blood. However, additional factors must play a role in whether a patient is prone to develop superficial siderosis or not. (orig.)

  11. Superficial cervicovaginal myofibroblastoma: report of four cases and literature review

    Institute of Scientific and Technical Information of China (English)

    WANG Qi-feng; WU Yu-yu; WANG Jian

    2010-01-01

    @@ In 2001, Laskin et al~1 firstly described a series of 14 seemly distinctive mesenchymal tumors that occurred exclusively in the superficial lamina propria of the vagina and cervix of middle to old-aged women. They proposed the term "superficial cervicovaginal myofibroblastoma (SCVM)" to highlight the unique features of this tumor: the superficial subepithelial location and myofibroblastic differentiation of the tumor cells. SCVM appears less well recognized with only three additional reports have been documented in the English literatures.~(2-4) In this study, we described four new cases of SCVM to further characterize the clinical and pathological features of this rare entity.

  12. Hemipelvic irradiation for superficial bladder cancer

    International Nuclear Information System (INIS)

    In 15 patients with superficial bladder cancer hemipelvic irradiation was performed for prevention of relapse of cancer and decrease in side effects with following results. All patients received TUR-Bt at our department during the six years period from 1978 to 1983. As to stages, one was classified as Ta, 11 as T 1 and 3 as T 2, and pathologic diagnosis was transitional epithelial carcinoma of grade 1 in 1 case, grade 2 in 8 cases and grade 3 in 6 cases. Irradiation was started from the 7 th to 14 th day after TUR-Bt. At first, hemipelvic anterior and posterior field including the field from the affected pelvis to 1 to 2 cm beyond the midline toward the contralateral side and from the aortic bifurcation to the prostatic urethra were irradiated at a dose of 45 Gy. Then, whole bladder field was given an additional rotation irradiation of 20 Gy. The mean observation period was 43 months (ranging from 12 to 79 months) and relapse of cancer was observed in 6 cases out of 15 cases (40%). The site of relapse was in the irradiated site in 2 cases, contralateral site in 3 cases and both side in 1 cases. However, in all of the relapsed cases no aggravation in differential degree or progression in stage was observed. As the side effects, radiation cystitis developed as a delayed damage in 1 case. Thus, although no efficacy for prevention of relapse which we had expected was not seen, this irradiation method effectively inhibited the progression of lesion and development of delayed damage. (author)

  13. Trauma ocupacional por corpo estranho corneano superficial Occupational trauma due to superficial corneal foreign body

    Directory of Open Access Journals (Sweden)

    Vanessa Miroski Gerente

    2008-04-01

    Full Text Available OBJETIVO: Avaliar a epidemiologia do trauma ocular por corpo estranho superficial de córnea. MÉTODOS: Os pacientes atendidos no Pronto-Socorro da Universidade Federal de São Paulo entre abril e junho de 2005 que apresentaram corpo estranho superficial de córnea foram entrevistados. Foram avaliados: sexo, idade, profissão, registro legal do emprego, uso, disponibilidade e tipo de equipamentos de proteção utilizados e a fiscalização do seu uso. O conhecimento das complicações deste tipo de acidente também foi avaliado. Os resultados foram analisados com teste do qui quadrado ou teste de Fisher. RESULTADOS: Foram entrevistados 123 pacientes. Apenas 3 eram do sexo feminino e a idade média foi de 36 anos. A maioria destes traumas ocorreu no ambiente de trabalho (86,2% e 58,4% não possuíam registro legal do emprego. As profissões mais freqüentemente envolvidas foram serralheiro, pedreiro e metalúrgico. Em 79,8% dos locais de trabalho havia equipamentos de proteção e 85,3% dos pacientes eram orientados a usá-los. Em 52,4% dos locais sua utilização era fiscalizada, mas apenas 34,2% usavam no momento do trauma. A utilização foi mais freqüente (p=0,008 e fiscalização mais presente (p=0,0415 entre pacientes com registro legal de emprego. Questionados sobre os riscos, 68,9% dos pacientes tinham consciência das complicações graves deste tipo de acidente. CONCLUSÃO: A maioria dos pacientes tem conhecimento sobre a gravidade do trauma ocular e este tipo de lesão ocorre mesmo em locais com equipamentos de proteção disponíveis, alguns deles até durante o seu uso. Os dados sugerem que enfoque maior da prevenção deve ser na fiscalização e utilização de equipamentos adequados.PURPOSE: To evaluate the epidemiology of superficial corneal foreign body. METHODS: Patients who were seen at the Emergency Service of the Federal University of São Paulo, from April/05 to June/05, were screened and those with superficial corneal

  14. Diagnostic and therapeutic challenges in superficial CNS siderosis

    DEFF Research Database (Denmark)

    Kondziella, Daniel; Lindelof, M.; Haziri, Donika; Larsen, Vibeke Andrée; Kruse, Anders

    2015-01-01

    INTRODUCTION: Superficial CNS siderosis was previously almost unknown but is now diagnosed with increasing frequency owing to magnetic resonance imaging. Patients may present with sensory deafness, gait ataxia, various sensorimotor signs and, eventually, cognitive decline. They typically have a h...

  15. Superficial Radiation Therapy for the Treatment of Nonmelanoma Skin Cancers

    Science.gov (United States)

    Minni, John; Herold, David

    2015-01-01

    Superficial radiation therapy has become more widely available to dermatologists. With the advent of more portable machines, it has become more convenient for dermatology practices to employ in an office-based setting. The goal of this paper is to provide a deeper insight into the role of superficial radiation therapy in dermatology practice and to review the current literature surrounding its use in the treatment of both basal and squamous cell carcinomas. PMID:26705443

  16. Interdigital foot infections: Corynebacterium minutissimum and agents of superficial mycoses

    OpenAIRE

    Fatma Mutlu Sariguzel; A. Nedret Koc; Gülhan Yagmur; Elife Berk

    2014-01-01

    Interdigital foot infections are mostly caused initially by dermatophytes, yeasts and less frequently by bacteria. Erythrasma caused by Corynebacterium minutissimum can be confused with superficial mycoses. The aim of the study was to determine the prevalence of the etiologic agents of superficial mycoses and the frequency of Corynebacterium minutissimum in interdigital foot infections. All the samples obtained from the 121 patients with interdigital foot infections were examined directly wit...

  17. Update on therapy for superficial mycoses: review article part I *

    OpenAIRE

    Dias, Maria Fernanda Reis Gavazzoni; Quaresma-Santos, Maria Victória Pinto; Bernardes-Filho, Fred; Amorim, Adriana Gutstein da Fonseca; Schechtman, Regina Casz; Azulay, David Rubem

    2013-01-01

    Superficial fungal infections of the hair, skin and nails are a major cause of morbidity in the world. Choosing the right treatment is not always simple because of the possibility of drug interactions and side effects. The first part of the article discusses the main treatments for superficial mycoses - keratophytoses, dermatophytosis, candidiasis, with a practical approach to the most commonly-used topical and systemic drugs , referring also to their dosage and duration of use. Promising new...

  18. Superficies in the form of the right to superpose

    OpenAIRE

    Simona CHIRICĂ; Cristiana MIC-SOARE

    2015-01-01

    The purpose of this paper is to present the current legal framework related to the superficies right in the form of the right to superpose, and especially to draw the attention and put certain question marks regarding the actuality or even the urgency of the need for regulation regarding the right to superpose. First, as a preliminary aspect, in order to emphasize the historical evolution of the superficies right, we will briefly present the development of this concept starting from the Roman...

  19. Imaging of the most frequent superficial soft-tissue sarcomas

    International Nuclear Information System (INIS)

    Superficial soft-tissue sarcomas are malignant mesenchymal tumors located within the cutaneous and/or subcutaneous layers. Most superficial soft-tissue sarcomas are low-grade tumors; yet, the risk of local recurrence is high, and initial wide surgery is the main prognostic factor. Some of these superficial sarcomas may grow, following an infiltrative pattern, and their real extent may be underestimated clinically. Imaging techniques are useful to determine precisely the real margins of the tumor, especially in cases of clinically doubtful or recurrent or large superficial lesions. Imaging tools enable one to determine the relationship with the superficial fascia separating the subcutaneous layer from the underlying muscle. In our institution ultrasonographic examination is followed by magnetic resonance (MR) imaging when the size of the lesion exceeds 3-5 cm. Imaging assessment is performed prior to biopsy, enabling optimal surgical management. Imaging features of the main superficial sarcomas are detailed in the following article, according to their major locations: those arising in the epidermis and/or dermis, which are most often diagnosed by dermatologists, and the subcutaneous sarcomas. (orig.)

  20. Imaging of the most frequent superficial soft-tissue sarcomas

    Energy Technology Data Exchange (ETDEWEB)

    Morel, Melanie; Taieb, Sophie; Ceugnart, Luc [Centre Oscar Lambret, Department of Radiology, Lille (France); Penel, Nicolas [Centre Oscar Lambret, Department of Oncology, Lille (France); Mortier, Laurent [Centre Hospitalier Universitaire de Lille, Department of Dermatology, Hopital Claude Huriez, Lille (France); Vanseymortier, Luc [Centre Oscar Lambret, Department of Surgery, Lille (France); Robin, Y.M. [Centre Oscar Lambret, Departement of Pathology, Lille (France); Gosset, Pierre [Groupement Hospitalier de l' Institut Catholique-Faculte Libre de Medecine de Lille, Department of Pathology, Hopital Saint-Philibert, Lomme (France); Cotten, Anne [Centre Hospitalier Universitaire de Lille, Department of Musculoskeletal Radiology, Centre Hopital Roger Salengro, Lille (France)

    2011-03-15

    Superficial soft-tissue sarcomas are malignant mesenchymal tumors located within the cutaneous and/or subcutaneous layers. Most superficial soft-tissue sarcomas are low-grade tumors; yet, the risk of local recurrence is high, and initial wide surgery is the main prognostic factor. Some of these superficial sarcomas may grow, following an infiltrative pattern, and their real extent may be underestimated clinically. Imaging techniques are useful to determine precisely the real margins of the tumor, especially in cases of clinically doubtful or recurrent or large superficial lesions. Imaging tools enable one to determine the relationship with the superficial fascia separating the subcutaneous layer from the underlying muscle. In our institution ultrasonographic examination is followed by magnetic resonance (MR) imaging when the size of the lesion exceeds 3-5 cm. Imaging assessment is performed prior to biopsy, enabling optimal surgical management. Imaging features of the main superficial sarcomas are detailed in the following article, according to their major locations: those arising in the epidermis and/or dermis, which are most often diagnosed by dermatologists, and the subcutaneous sarcomas. (orig.)

  1. Variabilidad espacial de los atributos de la capa arable de un inceptisol del piedemonte de la cordillera oriental (casanare, colombia)

    OpenAIRE

    Peña, Ricardo; Rubiano, Yolanda; Peña, Andrés; Chaves, Bernardo

    2009-01-01

    El objetivo de este trabajo fue estudiar la variabilidad espacial de los atributos del suelo, enfocado a optimizar futuros muestreos en suelos similares. El estudio se realizó en una superficie de 58 ha, ubicada en Tauramena, departamento de Casanare, Orinoquia colombiana. El suelo del estudio corresponde a un Oxic Dystrudept de textura franco arenosa a franco arcillosa, localizado sobre un abanico de terraza del piedemonte de la cordillera Oriental. A través del análisis del semivariograma y...

  2. El Protocolo de Montreal, un modelo de concertación para la protección de la capa de ozono

    OpenAIRE

    Sabogal, Nelson A.

    1998-01-01

    El Protocolo de Montreal relativo a las sustancias que agotan la capa de ozono, firmado el 16 de septiembre de 1987, ajustado y enmendado en 1990, 1992, 1995 y 1997 es un modelo de concertación entre todos los grupos interesados, países desarrollados y países en desarrollo, gobiernos, diplomáticos, científicos, industria, organizaciones no gubernamentales y ciudadanos preocupados de todos los rincones del planeta. El Protocolo de Montreal ha sido ratificado por 165 países y ha logrado disminu...

  3. Aplicación de la tecnología fotovoltaica de capa fina en empresas de sector logístico

    OpenAIRE

    Gutiérrez Bernal, Mª Araceli

    2014-01-01

    En el presente proyecto se va a estudiar la tecnología solar fotovoltaica de capa fina sobre la cubierta de las naves industriales en dos polígonos de Cataluña, concretamente uno en Lleida y otro de Tarragona. Entre las diferentes modalidades de captación solar se ha elegido la tecnología flexible y se va a hacer un estudio energético, económico y medioambiental Uno de los objetivos principales de la instalación fotovoltaica a implementar es el autoconsumo, comparando la generación de ener...

  4. Visões da África Representações e ideias acerca do continente africano nas capas da Revista Visão (1993-2006)

    OpenAIRE

    Oliva, Anderson

    2011-01-01

    O presente texto possui como objetivo maior analisar as representações elaboradas sobre a África e os africanos em doze capas da Revista Visão, publicadas entre 1993-2006. Defendemos a perspectiva de que as ideias de África veiculadas por este integrante do mass media português contemporâneo refletem e projetam as representações recorrentes sobre a temática nos cenários mentais de grande parte de sua população, ao mesmo tempo em que, influenciam a elaboração deste imaginário coletivo, revelan...

  5. Detección por cromatografía de capa fina (CCF) de metabolitos antinfúngicos producidos de Pseudomonas aeruginosa cepa PSS

    OpenAIRE

    Magdalena Lorenzo; Alina Frías; Pilar Villa; Maybis del Valle

    2006-01-01

    Se muestran los resultados preliminares obtenidos de la detección de extractos orgánicos de metabolitos antifúngicos de Pseudomonas aeruginosa cepa PSS por cromatografía de capa fina (CCF). Las extracciones fueron llevadas a cabo con acetato de etilo y la fase orgánica se analizó por TLC empleando el sistema de solvente cloroformo: acetona (3:1) como fase móvil. Para discernir el metabolito con actividad antifúngica se realizó un ensayo de Bioautografía utilizando el hongo Aspergillus flavus....

  6. Estudio de "las capas del cabo ladrillero superior" en el cabo homónimo, mioceno inferior de la cuenca austral, tierra del fuego

    Directory of Open Access Journals (Sweden)

    Estefanía P Tudisca

    2012-03-01

    Full Text Available En los acantilados del cabo Ladrillero, situado sobre la costa atlántica de la Isla Grande de Tierra del Fuego, afloran parte de los depósitos cuspidales que rellenan la cuenca de antepaís Austral o de Magallanes. Estos depósitos del Mioceno inferior son conocidos como "capas del Cabo Ladrillero" y "capas del Cabo San Pablo", siendo las "capas del Cabo Ladrillero superior" las analizadas en este trabajo. La zona de estudio, situada a una decena de kilómetros al norte del frente orogénico emergente (Punta Gruesa, permitió reconocer cuatro asociaciones de facies que registran depósitos gravitacionales resedimentados en un ambiente marino supra batial y una cuña deltaica progradante y somerizante hacia el noreste. Entre los rasgos más conspicuos observados en esta sucesión se destacan bancos deformados, intervalos macizos y abundantes diques clásticos, cuyo análisis estadístico indica un patrón transtensivo. Los microfósiles documentados en el área y utilizados previamente como herramienta para sostener un ambiente marino profundo provienen de niveles estratigráficos infrayacentes y corresponden a niveles de la Formación Desdémona y las capas del Cabo Ladrillero inferior, aflorantes hacia el sur de la zona de estudio. Las evidencias sedimentológicas no son concluyentes respecto de la batimetría, pero la ausencia de turbiditas clásicas, flujos hiperpícnicos, la abundancia de bancos deformados y resedimentados, restos vegetales y fragmentos de carbón son compatibles con un ambiente somero y deltaico con altas tasas de aporte y pendientes inestables antes que un ambiente marino profundo, y sugieren una historia compleja de la evolución del relleno sedimentario que no se explica meramente con los esquemas basados exclusivamente en el contenido de foraminíferos que domina en la literatura.

  7. Agar de capa delgada: una opción costoefectiva para el diagnóstico rápido de tuberculosis multirresistente

    OpenAIRE

    Hernández Sarmiento, José Mauricio; Martínez Negrete, Milton Alfonso; Castrillón Velilla, Diana Marcela; Mejía Espinosa, Sergio Andrés; Mejía Mesa, Gloria Isabel; Zapata Fernández, Elsa María; Rojas Jiménez, Sara; Marín Castro, Andrés Eduardo; Robledo Restrepo, Jaime Alberto

    2014-01-01

    Objetivo Realizar un análisis de costo efectividad comparando el método de cultivo en agar de capa delgada y el método estándar de proporciones múltiples, utilizados en el diagnóstico de Tuberculosis Multi-drogorresistente (TB MDR).Métodos Estudio de evaluación económica en el cual se evalúan los costos y la efectividad de dos pruebas diagnósticas, ejecutado en la Corporación para Investigaciones Biológicas-CIB en Medellín, Colombia.Resultados Se evaluaron 100 pacientes, encontrando una preva...

  8. Determinación cualitativa de giberelinas y auxinas por cromatografía de capa fina

    Directory of Open Access Journals (Sweden)

    Grolamys Castillo

    2007-01-01

    Full Text Available Las fitohormonas son sustancias endógenas bioactivas sintetizadas por las plantas en concentraciones fisiológicas, con el fin de controlar diversos procesos metabólicos. Dentro de este grupo de sustancias, dos de las más importantes por su incidencia en el rendimiento y calidad de las cosechas son las Giberelinas (GAs y las Auxinas. Diversas técnicas cromatográficas como la Cromatografía de Capa Fina (CCF, la Cromatografía de Gases (CG y la Cromatografía Líquida de Alta Resolución (CLAR han sido utilizadas para la determinación de fitohormonas. La CCF resulta ser una opción más sencilla y económica, útil para el seguimiento de rutina de la fermentación. Se lograron establecer dos métodos analíticos para la determinación cualitativa de Giberelinas y Auxinas en caldos de fermentación como métodos alternativos más sencillos y menos costosos que la CLAR. Para la CCF de GAs se utilizó una placa de Sílica gel G y como sistema de disolventes cloroformo/acetato de etilo/ácido acético glacial (5:4:1. El revelador consistió en una mezcla de ácido sulfúrico-etanol (95:5. Para las Auxinas se utilizó una placa de Silica gel HF254 y como sistema de disolventes benceno/acetato de etilo/ácido acético (70:25:5. Se utilizó como revelador la disolución de Salkowski. Los métodos de análisis por CCF, establecidos tanto para las GAs como para las Auxinas, permitieron definir que la extracción líquido-líquido permite purificar de cierta manera los caldos de fermentación y verificar la presencia de estos compuestos y otros metabolitos, en los caldos fermentados y en sus extractos.

  9. Crecimiento y caracterización de capas epitaxiales de KRE 1-X 4BX(WO4)2 /KRE (WO4)2 (RE=Y,LU) para aplicaciones láser

    OpenAIRE

    Aznar Écija, Ana Isabel

    2007-01-01

    En los últimos años, las capas delgadas ópticamente activas han adquirido una gran importancia, debido a sus aplicaciones en dispositivos ópticos integrados y dispositivos láser. Un láser de capa delgada requiere capas con una elevada concentración de ión activo y, que a su vez, tengan una elevada sección eficaz de absorción y emisión. Este tipo de láseres presentan como ventajas una mejor refrigeración axial del medio evitándose así problemas como el efecto lente. Los cristales monoclínicos ...

  10. Capa catalítica para la activación de oxígeno sobre electrolitos sólidos iónicos a alta temperatura

    OpenAIRE

    Serra Alfaro, José Manuel; Vert Belenguer, Vicente Bernard; Escolástico Rozalén, Sonia

    2008-01-01

    Capa catalítica para la activación de oxígeno sobre electrolitos sólidos iónicos a alta temperatura. La presente invención se refiere a una capa porosa catalítica para la activación de oxígeno que puede ser utilizada en pilas de combustible de óxidos sólidos (SOFC) y en membranas cerámicas densas de separación de oxígeno de alta temperatura. Esta capa porosa está formada principalmente por un material conductor mixto de electrones y del ión oxígeno y posee una estructu...

  11. Irradiación subletal de fibroblastos murinos 3T3 con rayos X para su utilización como capa celular alimentadora

    Directory of Open Access Journals (Sweden)

    Andrea Ramírez-Téllez

    2015-05-01

    Full Text Available Los queratinocitos, las principales células de la epidermis, requieren una capa alimentadora de células viables mitóticamente inactivadas para su supervivencia y proliferación in vitro. Para la producción de capas alimentadoras a partir de fibroblastos murinos 3T3, se evaluaron cuatro dosis de radiación con rayos X. Los efectos de las dosis se evaluaron mediante recuentos celulares y determinación de la viabilidad (MTT, adhesión (eficiencia de plateo y migración celular (scratch wound healing. Además, se encontraron evidencias que sugieren el arresto mitótico mediante una tinción nuclear (GIEMSA. Se observó que una dosis de radiación correspondiente a 80 Gy generó daños suficientes en la línea celular para causar el arresto mitótico, manteniendo a la vez la actividad metabólica basal durante 25 días.

  12. Módulos fotovoltaicos de silicio en capa delgada: caracterización y modelización

    OpenAIRE

    Roldán Molinero, Rubén

    2013-01-01

    [spa] El diseño de un sistema de generación eléctrica fotovoltaica requiere la estimación precisa de la producción eléctrica. Las especificaciones técnicas de los módulos proporcionan los parámetros eléctricos relevantes sólo en la condición estándar que la Comisión Electrotécnica Internacional establece en su norma [IEC904-1]: 25 ºC de temperatura de módulo, 1000 Wm(2) de irradiancia, AM1.5 global en la distribución espectral de la radiación e incidencia normal a la superficie del módulo. La...

  13. VARIACIÓN DE LA ESTABILIDAD Y ALTURA DE LA CAPA DE MEZCLA EN LA CIUDAD DE PINAR DEL RÍO. SU RELACIÓN CON CONDICIONES SINÓPTICAS

    OpenAIRE

    DAGOBERTO RODRÍGUEZ VALDÉS; SILVERIO QUINTERO; JAIME YOSDANY GONZÁLEZ; OSVALDO CUESTA SANTOS; ALMARA SÁNCHEZ DÍAZ

    2015-01-01

    El estudio se realizó en la ciudad de Pinar del Río en Cuba durante el período 2006-2010, donde se analizó el comportamiento de la estabilidad atmosférica y altura de la capa de mezcla. Para obtener la categoría de estabilidad atmosférica se utilizó la clasificación de acuerdo a la longitud de Monin-Obukhov. La metodología para calcular la altura la capa de mezcla, estuvo basada en el procedimiento establecido en el preprocesador meteorológico AERMET, con algunas modificaciones por no dispone...

  14. Clinical And Mycological Study Of Superficial Mycoses In Amritsar

    Directory of Open Access Journals (Sweden)

    Aggarwal Aruna

    2002-01-01

    Full Text Available A clinical and mycological study of 500 cases of superficial mycoses was conducted. Two hundred fifty two samples from various sites, viz., skin, nail and hair were positive on culture. The most prevalent clinical type was tinea corporis (36.2% and the most prevalent aetiological agent was Trichophyton rubrum (62.3%. Nondermatophytic filamentous fungi and candida species were also isolated in 17 (6.74% cases. It was concluded that along with dermatophytes, nondermatophytic fungi are also emerging as important causes of superficial mycoses.

  15. Superficies bioactivas en implantología: una nueva perspectiva

    OpenAIRE

    A. Cutando; G. Gómez-Moreno; Arana, C

    2007-01-01

    Actualmente, tras años de investigación en implantología, en los cuales se han realizado muchos trabajos, en donde se han estudiado diferentes tipos de superficies de implantes, lisas y rugosas, en un intento de mejorar, tanto en el tiempo como en la calidad , la osteointegración, se ha concluido que los implantes de superficie rugosa con un intervalo de rugosidad entre 1,0-2,0 nm, son los que parecen dar una mejor respuesta ósea y mejores resultados clínicos, pero desde un punto de vista exc...

  16. Aneurysm of the superficial femoral artery in an infant

    International Nuclear Information System (INIS)

    An isolated arterial aneurysm in childhood is extremely rare. We report a 1-year-old girl with an aneurysm of the right superficial femoral artery, presenting as an asymptomatic mass of the thigh. The aneurysm involved the whole superficial femoral artery (9 cm in length), and surgical treatment would have required replacement of the affected artery. Conservative treatment was chosen, influenced by the patient's rapid growth at that time. Non-invasive, 3-D contrast-enhanced magnetic resonance angiography (MRA) was useful as an alternative to conventional angiography for detailed evaluation of the femoral arteries, including the aneurysm. (orig.)

  17. POTENCIAL DE REGENERACIÓN DE Psychotria ipecacuanha (Rubiaceae A PARTIR DE CAPAS DELGADAS DE CÉLULAS

    Directory of Open Access Journals (Sweden)

    Catalina BOTERO GIRALDO

    2015-07-01

    Full Text Available Conociendo las propiedades medicinales de la especie vegetal Psychotria ipecacuanha (Brot. Stokes, su crítico estado de conservación, así como las dificultades que presenta para la propagación efectiva, el presente estudio tuvo como objetivo evaluar su potencial de propagación por los sistemas de regeneración in vitro, organogénesis y embriogénesis somática. Para este propósito, capas delgadas de células (CDCs de tallos y de hojas, así como segmentos foliares fueron sometidos a diferentes tratamientos con reguladores de crecimiento y condiciones de luz. Además se estableció el efecto de diferentes longitudes de onda vía diodos emisores de luz (LEDs, sobre la regeneración en estos explantes y nudos provenientes de plantas in vitro. Los resultados obtenidos mostraron que los segmentos de hoja y las CDCs de tallo sembrados en el medio de cultivo MS suplementado con las combinaciones de los reguladores de crecimiento IBA + BAP e IBA + TDZ formaron embriones somáticos y brotes. Los cortes histológicos realizados corroboraron estos dos tipos de origen. Se encontró que bajo la condición lumínica 16/8, se alcanzaron los mejores resultados de inducción de brotes y embriones. En cuanto al efecto de las diferentes longitudes de onda de luz, se encontró que las correspondientes al rojo, verde y blanca, favorecieron el crecimiento y desarrollo de brotes y la inducción de embriones somáticos. El desarrollo de los brotes a partir de los nudos no presentó diferencias estadísticas entre los tratamientos con LEDs, por lo que se recomienda el uso de la luz blanca continua y con fotoperiodo durante el proceso de multiplicación y desarrollo de estos.Regeneration Potential of Psychotria Ipecacuanha (Rubiaceae from Thin Cell Layers Knowing the medicinal properties of the plant specie Psychotria ipecacuanha (Brot. Stokes, its critical condition and the difficulties for its effective propagation, the present study aimed to assess the

  18. Efecto de la modificación superficial de alambres delgados de acero inoxidable AISI 302 mediante plasma electrolítico sobre sus propiedades mecánicas

    Directory of Open Access Journals (Sweden)

    Gallegos, A.

    2012-12-01

    Full Text Available In this work different tests using electrolytic plasma (EP on thin wires of stainless steel AISI 302 in an inert solution were performed. Tensile tests were carried out in order to measure changes in the mechanical strength of the samples; moreover, both the morphological and microstructural changes also were evaluated. It was found that after 10 s of the application of EP, the samples surface was uniformly covered by nodules-like and craters similar to those found in the melting and cooling periods of EP. The results show a significant surface grain refinement, leading to crystalline arrangements with sizes less than 200 nm and also an increase in the samples tensile strength of at least 57 % respect to steel base.

    En este trabajo se realizaron ensayos de aplicación de plasma electrolítico (PE sobre alambres delgados de acero inoxidable AISI 302 en una solución inerte. Las probetas se sometieron a ensayos de tracción, con el fin de medir cambios en su resistencia mecánica; adicionalmente fueron evaluadas en sus cambios morfológicos y microestructurales. Se encontró que después de 10 s de aplicación de PE, la superficie de las probetas estaba uniformemente cubierta por nódulos y cráteres propios del ciclo de fusión y enfriamiento del PE; se evidenció un significativo afinamiento del grano superficial, llegando a ordenamientos cristalinos de tamaño menor a 200 nm y también se observó que la capa superficial afectada presentó un incremento de la resistencia a la tracción de al menos un 57 % respecto al acero base.

  19. Tromboflebite superficial: epidemiologia, fisiopatologia, diagnóstico e tratamento Superficial thrombophlebitis: epidemiology, physiopathology, diagnosis and treatment

    Directory of Open Access Journals (Sweden)

    Marcone Lima Sobreira

    2008-06-01

    Full Text Available A tromboflebite superficial de membros inferiores é doença de ocorrência comum, estando associada a diversas condições clínicas e cirúrgicas. Historicamente considerada doença benigna, devido à sua localização superficial e ao fácil diagnóstico, o tratamento foi conservador durante muito tempo, na maioria dos casos. Entretanto, relatos recentes de freqüências altas de complicações tromboembólicas associadas - 22 a 37% para trombose venosa profunda e até 33% para embolia pulmonar - alertaram para a necessidade de abordagens diagnósticas e terapêuticas mais amplas, visando diagnosticar e tratar essas possíveis complicações. A possibilidade da coexistência dessas e de outras desordens sistêmicas (colagenoses, neoplasias, trombofilias interfere na avaliação e influencia a conduta terapêutica, que pode ser clínica, cirúrgica ou combinada. No entanto, devido à falta de ensaios clínicos controlados e às incertezas quanto a sua história natural, o diagnóstico e o tratamento da tromboflebite superficial continuam indefinidos. Neste trabalho, foi feita uma revisão da literatura analisando-se a epidemiologia, fisiopatologia e estado atual do diagnóstico e tratamento da tromboflebite superficial.Superficial thrombophlebitis of the lower limbs is a commonly occurring disease, and it is associated with various clinical and surgical conditions. Historically considered to be a benign disease due to its superficial location and easy diagnosis, its treatment was, for a long time, conservative in most cases. Nevertheless, recent reports of high frequency and associated thromboembolic complications, which vary from 22 to 37% for deep venous thrombosis and up to 33% for pulmonary embolism, have indicated the need for broader diagnostic and therapeutic approaches in order to diagnose and treat such possible complications. The possibility of coexistence of these and other systemic disorders (collagenosis, neoplasia, thrombophilia

  20. Superficies bioactivas en implantología: una nueva perspectiva

    Directory of Open Access Journals (Sweden)

    A. Cutando

    2007-02-01

    Full Text Available Actualmente, tras años de investigación en implantología, en los cuales se han realizado muchos trabajos, en donde se han estudiado diferentes tipos de superficies de implantes, lisas y rugosas, en un intento de mejorar, tanto en el tiempo como en la calidad , la osteointegración, se ha concluido que los implantes de superficie rugosa con un intervalo de rugosidad entre 1,0-2,0 nm, son los que parecen dar una mejor respuesta ósea y mejores resultados clínicos, pero desde un punto de vista exclusivamente mecánico. Hoy en día las investigaciones se centran en el desarrollo de superficies denominadas bioactivas, las cuales son capaces de interaccionar con el hueso que rodea al implante, como ocurre cuando el implante es revestido con carbonato cálcico o bien con flúor. Pero sabemos que dentro del metabolismo óseo, juegan importantes papeles, moléculas, como son la melatonina y la hormona del crecimiento entre otras, las cuales deben de ser tenidas en cuenta a la hora de hablar de osteointegración. Se realiza una breve descripción de la fisiología de ambas moléculas y se valora su aplicación al concepto de superficie bioactiva en implantología.

  1. Spontaneous Superficial Femoral Artery Pseudoaneurysm in Behcet's Disease

    Directory of Open Access Journals (Sweden)

    Murat Ugurlucan

    2014-01-01

    Full Text Available Behcet’s disease is an autoimmune multisystemic disorder on vasculitis base. Cardiovascular involvement is the most important predictor of morbidity and mortality. The treatment should be planned carefully for pathologies requiring interventions. In our report, we present a 45-year-old patient with spontaneous superficial femoral artery pseudoaneurysm, our treatment strategy, and circumstances we faced.

  2. Major Superficial White Matter Abnormalities in Huntington's Disease

    Science.gov (United States)

    Phillips, Owen R.; Joshi, Shantanu H.; Squitieri, Ferdinando; Sanchez-Castaneda, Cristina; Narr, Katherine; Shattuck, David W.; Caltagirone, Carlo; Sabatini, Umberto; Di Paola, Margherita

    2016-01-01

    Background: The late myelinating superficial white matter at the juncture of the cortical gray and white matter comprising the intracortical myelin and short-range association fibers has not received attention in Huntington's disease. It is an area of the brain that is late myelinating and is sensitive to both normal aging and neurodegenerative disease effects. Therefore, it may be sensitive to Huntington's disease processes. Methods: Structural MRI data from 25 Pre-symptomatic subjects, 24 Huntington's disease patients and 49 healthy controls was run through a cortical pattern-matching program. The surface corresponding to the white matter directly below the cortical gray matter was then extracted. Individual subject's Diffusion Tensor Imaging (DTI) data was aligned to their structural MRI data. Diffusivity values along the white matter surface were then sampled at each vertex point. DTI measures with high spatial resolution across the superficial white matter surface were then analyzed with the General Linear Model to test for the effects of disease. Results: There was an overall increase in the axial and radial diffusivity across much of the superficial white matter (p < 0.001) in Pre-symptomatic subjects compared to controls. In Huntington's disease patients increased diffusivity covered essentially the whole brain (p < 0.001). Changes are correlated with genotype (CAG repeat number) and disease burden (p < 0.001). Conclusions: This study showed broad abnormalities in superficial white matter even before symptoms are present in Huntington's disease. Since, the superficial white matter has a unique microstructure and function these abnormalities suggest it plays an important role in the disease. PMID:27242403

  3. Efectos de las capas someras de alta velocidad en los datos sísmicos aplicados a la detección de hidrocarburos

    Directory of Open Access Journals (Sweden)

    Guevara Saul

    2003-08-01

    Full Text Available

    Elastic waves provide characteristics of earth interior, which are necessary in Hydrocarbon and mineral prospect ions. This information is affected by shallow layers distorting the data coming from deep layers. In the colombian geology are fragment shallow layer with high velocity. In this case waves travel by anomalous paths being difficult to identity them, because these events contaminate and alternate the information considerated usefull. The effects associated to this phenomena are unknown with details. In this paper, one of these case is presented througen seismic modeling and vial data with an interpretation about its characteristics.

    Las ondas elásticas son una importante fuente de información de las  características del interior de la tierra, necesarios en la búsqueda de hidrocarburos y otros recursos minerales. Esta información es afectada generalmente por las capas someras, cuyas características distorsionan los datos provenientes de las capas de interés, usual mente más profundas. Un caso, frecuente en la geología colombiana es el de las capas someras de alta velocidad. En este caso las ondas siguen direcciones anómalas, y con frecuencia la información es muy difícil de identificar, ya que se generan eventos que la contaminan y probablemente la atenúan, Aunque se sabe que existe este efecto, muchos de sus detalles son desconocidos. Aquí se presenta uno de estos casos, se ilustra con modelamiento sísmico con datos reales y se presenta una interpretación de sus características.

  4. Cinética de formación del Al2O3 en capas de aluminio estudiada mediante mediciones eléctricas

    Directory of Open Access Journals (Sweden)

    Oliva, A. I.

    2004-08-01

    Full Text Available In this work a simple method for monitoring the low temperature oxidation of aluminum thin films, which is based on measurements of electrical resistance using the four-probe technique, is proposed. Kinetic growth data of the aluminum oxide layer, obtained using different values of applied current on as-deposited metallic films is presented. The temperature gradient measured on the films were 2 °C and 9 °C when the corresponding applied currents were 0.1A and 0.2 A. The obtained data show a good agreement with the Cabrera-Mott`s model for low temperature oxidation of metals. From kinetic curves, values of the energy barrier (U and of the electrostatic potential (V were obtained, which are reasonable with the values reported in the literature. The sample with a larger current applied, exhibited a higher oxidation rate due to a thermal effect and by the larger electrostatic potential established across the oxide layer. This simple method can be interesting to monitoring and controlling the oxidation process.En este trabajo se propone un método sencillo para el seguimiento del proceso de oxidación de capas delgadas de aluminio, basado en mediciones de la resistencia eléctrica usando la técnica de cuatro puntas en línea. Se presentan datos de cinética de crecimiento de la capa de óxido de aluminio para dos muestras recién depositadas a las que se aplicaron valores distintos de corriente. Los cambios de temperatura medidos fueron de 2 °C y 9 °C para corrientes aplicadas de 0.1 A y 0.2 A. Los datos muestran buen acuerdo con el modelo de Cabrera-Mott para oxidación de metales en baja temperatura. A partir de las curvas de crecimiento se obtuvieron valores de la barrera de energía (U y del potencial electrostático (V, razonables con los reportados en la literatura. La muestra con mayor corriente aplicada se oxidó más rápido debido al efecto térmico ya que se estableció un mayor potencial electrostático a través de la capa de

  5. Frequência de rupturas agudas de placas e fibroateromas de capa fina em locais de estenose máxima Frecuencia de rupturas agudas de placas y fibroateromas de capa fina en locales de estenosis máxima Frequency of acute plaque ruptures and thin cap atheromas at sites of maximal stenosis

    Directory of Open Access Journals (Sweden)

    Fabio Tavora

    2010-02-01

    Full Text Available FUNDAMENTO: Poucos estudos de autópsia relacionam locais de fibroateromas de capa fina (FCF a locais de ruptura aguda de placas em artérias responsáveis, e locais de estreitamento máximo em artérias não responsáveis. OBJETIVO: O objetivo do presente estudo foi quantificar e localizar a frequência de FCF em relação aos locais de estenose máxima em placas ateroscleróticas. MÉTODOS: Estudamos 88 corações em vítimas de morte súbita devido a um tromo coronariano sobreposta a ruptura aguda da placa. Fibroateromas de capa fina foram definidos como capa fibrosa FUNDAMENTO: Pocos estudios de autopsia relacionan locales de fibroateromas de capa fina (FCF a locales de ruptura aguda de placas en arterias responsables, y locales de estrechamiento máximo en arterias no responsables. OBJETIVO: El objetivo del presente estudio fue cuantificar y localizar la frecuencia de FCF con relación a los locales de estenosis máxima en placas ateroscleróticas. MÉTODOS: Estudiamos 88 corazones en víctimas de muerte súbita debido a un trombo coronario sobrepuesto a ruptura aguda de la placa. Fibroateromas de capa fina fueron definidos como capa fibrosa BACKGROUND: There have been few autopsy studies relating sites of thin cap atheroma (TCFA to sites of acute plaque rupture in culprit arteries, and sites of maximal narrowing in non-culprit arteries. OBJECTIVE: We aimed to quantify and locate the frequency of TCFA related to the sites of maximal stenosis in atherosclerotic plaques. METHODS: We studied 88 hearts in victims of sudden death dying with coronary thrombus overlying acute plaque rupture. Thin cap atheromas were defined as fibrous cap < 65 microns overlying a necrotic core. Percent luminal narrowing was determined at the sites of plaque rupture and thin cap atheromas. RESULTS: There were 81 men and 7 women, mean age 50 years ± 9 SD. The plaque rupture was the site of maximal luminal narrowing in 47% of culprit arteries. TCFAs were present in

  6. Modelo de multicapas Gd1-xCo x/Co y la dependencia de su comportamiento con la variación del espesor de la capa ferromagnética Gd1-xCo x

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    N. Hurtado

    2006-01-01

    Full Text Available Se hace un estudio numérico de los cambios en las propiedades magnéticas que se observan en el ordenamiento ferromagnético de multicapas Gd1-xCo x/Co. Se encuentra que los puntos de compensación presentan una disminución abrupta con el aumento de la capa ferromagnética (Gd1-xCo x. Se observa que a partir de un espesor de la capa ferromagnética, la temperatura de compensación se hace independiente del crecimiento de la capa, este resultado coincide con lo que algunos autores han encontrado experimentalmente. La temperatura crítica varía solo para espesores pequeños de la capa Gd1-xCo x, este comportamiento es debido a efectos de tamaño finito, para los cuales la temperatura crítica es sensible. La magnetización total de las multicapas presenta un valor distinto de cero para un alto rango de temperatura, ya que la temperatura crítica del Gd es muy alta comparada con la del Co. La temperatura crítica se mantiene constante en el rango donde la temperatura de compensación existe.

  7. VARIACIÓN DE LA ESTABILIDAD Y ALTURA DE LA CAPA DE MEZCLA EN LA CIUDAD DE PINAR DEL RÍO. SU RELACIÓN CON CONDICIONES SINÓPTICAS

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    DAGOBERTO RODRÍGUEZ VALDÉS

    2015-03-01

    Full Text Available El estudio se realizó en la ciudad de Pinar del Río en Cuba durante el período 2006-2010, donde se analizó el comportamiento de la estabilidad atmosférica y altura de la capa de mezcla. Para obtener la categoría de estabilidad atmosférica se utilizó la clasificación de acuerdo a la longitud de Monin-Obukhov. La metodología para calcular la altura la capa de mezcla, estuvo basada en el procedimiento establecido en el preprocesador meteorológico AERMET, con algunas modificaciones por no disponer sondeos de aire superior. Además se caracterizaron los comportamientos de la estabilidad atmosférica y altura de la capa de mezcla en los diversos Tipos de Situaciones Sinópticas (TSS. Finalmente se muestran la variación horaria y mensual de la estabilidad atmosférica y de la altura de la capa de mezcla, así como la variación mensual a las 7, 13, 16 y 17 horas. Se pudo determinar que las mejores condiciones para la dispersión y el mezclamiento de los contaminantes en la atmósfera ocurren en los meses de verano y en el horario diurno, cuyo horario más favorable se presenta a las 17 horas.

  8. Inversión espectral prestack simultánea de ondas PP y PS para la caracterización cuantitativa de capas delgadas

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    Ramsis Guerrero

    2012-06-01

    Full Text Available En este trabajo extendemos un método de inversión espectral para determinar las propiedades de una capa delgada y de los medios que se encuentran por encima y por debajo de la misma, a partir del espectro de amplitud de la respuesta sísmica prestack, con aplicación a la caracterización de reservorios asociados a estructuras con espesores por debajo del tunning. Estas propiedades incluyen el espesor de la capa delgada como así también las velocidades de las ondas compresionales y de corte, y las densidades de cada uno de los tres medios. Se presentan numerosos ejemplos utilizando datos sintéticos con ruido gaussiano generados a partir de diversos modelos de capas delgadas representativos de reservorios de gas de unos pocos metros de espesor. Se demuestra que, bajo ciertas condiciones, es posible obtener estimaciones razonables de los diversos parámetros involucrados utilizando el dato sísmico prestack convencional (ondas PP. Se analiza asimismo el impacto del uso de la información adicional provista por las ondas de corte convertidas (ondas PS, demostrándose que éstas contribuyen a mejorar significativamente las calidad de los resultados y a relajar las condiciones requeridas por el uso de las ondas PP solamente. Por último, y con el objetivo de reducir los problemas de no-unicidad inherentes a este tipo de problema inverso, las soluciones son forzadas a satisfacer, dentro de cierta tolerancia, la posible correlación existente entre las velocidades de las ondas P y S, y entre la velocidad de la onda P y la densidad, información a priori con frecuencia disponible a partir de datos de pozo. Como consecuencia, la incerteza en la estimación del espesor, velocidades y densidad de la capa delgada se reduce significativamente, lo que permite obtener soluciones más precisas y confiables.In this work, we extend a spectral inversion method for determining the properties of a thin bed and those of the media lying above and below it from

  9. A traumatic superficial temporal artery aneurysm after a bicycle accident

    Science.gov (United States)

    Veen, Egbert J.D.; Poelmann, Floris B.; IJpma, Frank F.A.

    2014-01-01

    A male cyclist presented with a swelling on the forehead. Six weeks before, he fell of his bike and smashed his head on the ground while wearing a helmet. A smooth lump of 1 cm had evolved on the temporal side of his forehead in a few weeks. Duplex ultrasonography demonstrated a dilated vessel with a minor defect in the luminal wall. Surgical exploration revealed an aneurysm of the superficial temporal artery (STA). The aneurysm was surgically removed and the patient recovered uneventfully. Owing to its superficial course, the STA is vulnerable to blunt head trauma. Traumatic aneurysms of the STA should be a differential diagnostic consideration in patients with a history of trauma and a swelling on their head. PMID:25352578

  10. A traumatic superficial temporal artery aneurysm after a bicycle accident.

    Science.gov (United States)

    Veen, Egbert J D; Poelmann, Floris B; IJpma, Frank F A

    2014-01-01

    A male cyclist presented with a swelling on the forehead. Six weeks before, he fell of his bike and smashed his head on the ground while wearing a helmet. A smooth lump of 1 cm had evolved on the temporal side of his forehead in a few weeks. Duplex ultrasonography demonstrated a dilated vessel with a minor defect in the luminal wall. Surgical exploration revealed an aneurysm of the superficial temporal artery (STA). The aneurysm was surgically removed and the patient recovered uneventfully. Owing to its superficial course, the STA is vulnerable to blunt head trauma. Traumatic aneurysms of the STA should be a differential diagnostic consideration in patients with a history of trauma and a swelling on their head. PMID:25352578

  11. Superficial thrombophlebitis (Mondor′s Disease) after breast augmentation surgery

    OpenAIRE

    Viana Giovanni Andre; Okano Fabricio

    2008-01-01

    Although the aetiology of Mondor′s disease remains unclear, the most commonly cited cause is trauma of some sort. Although surgical trauma has frequently been quoted, reports that specifically implicate aesthetic breast surgery are unusual in the literature. In this article, the authors report a case of superficial thrombophlebitis of the anterolateral chest wall secondary to breast augmentation surgery in a woman, five months after the procedure. The authors performed an analysis of t...

  12. Isolated rupture of the superficial vein of the penis

    OpenAIRE

    Eken, Alper; Acil, Meltem; ARPACI, TANER

    2014-01-01

    Penile emergencies are rare but when they do occur, prompt diagnosis and treatment are warranted. Emergent conditions of the male genitalia are mainly traumatic, vascular or infectious. Penile emergencies are usually caused by trauma to the penis, during sexual intercourse or manipulation of an erect penis during masturbation. One of the traumatic vascular penile emergencies is superficial penile dorsal vein rupture. This is a rare condition, with just a few reported cases. It is usually take...

  13. Superficial venous thrombosis: disease progression and evolving treatment approaches

    OpenAIRE

    Litzendorf ME; Satiani B

    2011-01-01

    Maria E Litzendorf, Bhagwan SatianiHeart and Vascular Center and Division of Vascular Surgery, Department of Surgery, The Ohio State University College of Medicine, Columbus, OH, USAAbstract: Treatment of superficial venous thrombosis (SVT) has recently shifted as increasing evidence suggests a higher than initially recognized rate of recurrence as well as concomitant deep venous thrombosis. Traditional therapies aimed at symptom control and disruption of the saphenofemoral junction are being...

  14. Clinical And Mycological Study Of Superficial Mycoses In Amritsar

    OpenAIRE

    Aggarwal Aruna; Arora Usha; Khanna Saroj

    2002-01-01

    A clinical and mycological study of 500 cases of superficial mycoses was conducted. Two hundred fifty two samples from various sites, viz., skin, nail and hair were positive on culture. The most prevalent clinical type was tinea corporis (36.2%) and the most prevalent aetiological agent was Trichophyton rubrum (62.3%). Nondermatophytic filamentous fungi and candida species were also isolated in 17 (6.74%) cases. It was concluded that along with dermatophytes, nondermatoph...

  15. Cytological diagnosis of superficial acral fibromyxoma: A case report

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    Divakar Sullery Raghupathi

    2015-01-01

    Full Text Available Superficial acral fibromyxoma (SAF is a rare, distinctive benign soft tissue lesion that often involves the fingers and toes, with the great toe being the most frequently affected site. We report a case of SAF diagnosed by fine needle aspiration cytology and confirmed by histopathology. The pre-operative cytological diagnosis will help the surgeon to plan for a wider excision that prevents recurrence.

  16. Cytological diagnosis of superficial acral fibromyxoma: A case report

    Science.gov (United States)

    Raghupathi, Divakar Sullery; Krishnamurthy, Jayashree; Kakoti, Lopa Mudra

    2015-01-01

    Superficial acral fibromyxoma (SAF) is a rare, distinctive benign soft tissue lesion that often involves the fingers and toes, with the great toe being the most frequently affected site. We report a case of SAF diagnosed by fine needle aspiration cytology and confirmed by histopathology. The pre-operative cytological diagnosis will help the surgeon to plan for a wider excision that prevents recurrence. PMID:25948945

  17. Congenital absence of superficial posterior compartment calf muscles

    OpenAIRE

    Tibrewal, Saket; Alyas, Faisal; Vemulapalli, Krishna

    2013-01-01

    Although various congenital abnormalities have been described, congenital absence of calf musculature is extremely rare, with only one report on its complete absence. We are the first to describe a case of congenital absence of muscles of the superficial posterior compartment of the calf presenting in a toddler. The child presented with a history of a painless limp, however no significant difference was found in functional gait analysis. We suggest that such cases should be monitored and pare...

  18. Treatment for superficial non-ampullary duodenal epithelial tumors

    OpenAIRE

    Kakushima, Naomi; Kanemoto, Hideyuki; Tanaka, Masaki; Takizawa, Kohei; Ono, Hiroyuki

    2014-01-01

    Because of the low prevalence of non-ampullary duodenal epithelial tumors (NADETs), standardized clinical management of sporadic superficial NADETs, including diagnosis, treatment, and follow-up, has not yet been established. Retrospective studies have revealed certain endoscopic findings suggestive of malignancy. Duodenal adenoma with high-grade dysplasia and mucosal cancer are candidates for local resection by endoscopic or minimally invasive surgery. The use of endoscopic treatment includi...

  19. Superficial urinary bladder tumors treatment results: A 10-year experience

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    Stanković Jablan

    2007-01-01

    Full Text Available Background/Aim. The most common urinary bladder tumors are superficial tumors. Due to their tension to relapse and progress towards deeper layers after surgical therapy, an adequate therapy significantly contributed to the improvement of the results of urinary bladder tumors treatment. Staging and gradus of the tumor, presence of the carcinoma in situ (CIS or relapses significantly influenced the choice of the therapy. The aim of this study was to ascertain the effectiveness of the intravesicelly applied BCG (Bacille Colmette - Guerin vaccine or chemiotherapy in the prevention of the relapses and further progression of superficial urinary bladder tumors. Methods. All of the diagnosed superficial tumors of bladder were removed by transurethral resection (TUR. After receiving the patohistological finding they were subjected to adjuvant therapy, immune BCG vaccine or chemiotherapy (epirubicin, doxorubicin, mitomycin-C. The third group did not accept adjuvant therapy, but had regularly scheduled cystoscopic controls. The appearance of relapses, progression of stage and grades of the tumor, as well as possible unwanted effects of adjuvant therapy were registered. Results. The applied immunotherapy (BCG influenced decreased tumor relapses (7% and statistically important difference between patients who had taken adjuvant chemotherapy (relapses 18.4% and those without this therapy was acknowledged. Grades of tumor did not show statistically significant difference on tumor relapse. A significantly longer period of time in the appearance of tumor relapse after BCG (29.33 months, had significant importance comparing to chemio (9.44 months or non-taken adjuvant therapy (9.84 months. Very small number of unwanted effects suggested an obligatory undertaking adjuvant therapy after TUR of superficial tumors. Conclusion. A significant decrease of relapses as well as avoidance of further progression of urinary bladder tumors, has introduced adjuvant therapy in

  20. Superficial urinary bladder tumors treatment results: A 10-year experience

    OpenAIRE

    Stanković Jablan; Dinić Ljubomir; Pavlović Svetlana

    2007-01-01

    Background/Aim. The most common urinary bladder tumors are superficial tumors. Due to their tension to relapse and progress towards deeper layers after surgical therapy, an adequate therapy significantly contributed to the improvement of the results of urinary bladder tumors treatment. Staging and gradus of the tumor, presence of the carcinoma in situ (CIS) or relapses significantly influenced the choice of the therapy. The aim of this study was to ascertain the effectiveness of the intravesi...

  1. Measurement of the angle of superficial tension by images

    Science.gov (United States)

    Yanez M., Javier; Alonso R., Sergio

    2006-02-01

    When a liquid is deposited on a surface, this one form a certain angle with respect to the surface, where depending on its value, it will conclude that so hard it is his adhesion with the surface. By means of the analysis of images we looked for to measure this angle of superficial tension. In order to make this measurement, we propose a technique by means of projective transformations and one method of regression to estimation parameters to conic fitting.

  2. Superficial thrombophlebitis (Mondor's Disease) after breast augmentation surgery

    OpenAIRE

    Viana, Giovanni André P.; Okano, Fabrício M.

    2008-01-01

    Although the aetiology of Mondor's disease remains unclear, the most commonly cited cause is trauma of some sort. Although surgical trauma has frequently been quoted, reports that specifically implicate aesthetic breast surgery are unusual in the literature. In this article, the authors report a case of superficial thrombophlebitis of the anterolateral chest wall secondary to breast augmentation surgery in a woman, five months after the procedure. The authors performed an analysis of the dise...

  3. HMFG-2 as a prognostic indicator in superficial bladder cancer.

    OpenAIRE

    Conn, I G; Crocker, J.; Emtage, L A; Wallace, D M

    1988-01-01

    A series of transitional cell carcinomas and mucosal biopsy specimens of bladder were stained immunohistochemically with the monoclonal antibody HMFG-2. Staining characteristics ranged from luminal staining in well differentiated, superficial lesions to staining of all cells in invasive carcinomas. Invasive tumour nests also stained strongly with the antibody. There was good correlation between the staining pattern and histological assessment of both tumours and mucosal biopsy specimens. Corr...

  4. Interdigital foot infections: Corynebacterium minutissimum and agents of superficial mycoses

    Science.gov (United States)

    Sariguzel, Fatma Mutlu; Koc, A. Nedret; Yagmur, Gülhan; Berk, Elife

    2014-01-01

    Interdigital foot infections are mostly caused initially by dermatophytes, yeasts and less frequently by bacteria. Erythrasma caused by Corynebacterium minutissimum can be confused with superficial mycoses. The aim of the study was to determine the prevalence of the etiologic agents of superficial mycoses and the frequency of Corynebacterium minutissimum in interdigital foot infections. All the samples obtained from the 121 patients with interdigital foot infections were examined directly with the use of 20% potassium hydroxide mounts and Gram stain under the microscope and cultured on Sabouraud’s dextrose agar plates. In identification of superficial mycoses, the rate was found to be 14% with the cultural method and 14% with direct microscopic examination. Using a combination of direct microscopic examination and culture, a 33.8% ratio was achieved. In the culture of these samples, the most isolated factor was Trichophyton rubrum (33.7%). In 24 of the patients (19.8%) Corynebacterium minutissimum was detected by Gram staining, in 6 of these patients Trichophyton rubrum was found, Trichophyton mentagrophytes was found in 2 and Trichosporon spp. was found in 1. The examination of interdigital foot lesions in the laboratory, the coexistence of erythrasma with dermatophytes and yeast should be considered. PMID:25477907

  5. Interdigital foot infections: Corynebacterium minutissimum and agents of superficial mycoses

    Directory of Open Access Journals (Sweden)

    Fatma Mutlu Sariguzel

    2014-09-01

    Full Text Available Interdigital foot infections are mostly caused initially by dermatophytes, yeasts and less frequently by bacteria. Erythrasma caused by Corynebacterium minutissimum can be confused with superficial mycoses. The aim of the study was to determine the prevalence of the etiologic agents of superficial mycoses and the frequency of Corynebacterium minutissimum in interdigital foot infections. All the samples obtained from the 121 patients with interdigital foot infections were examined directly with the use of 20% potassium hydroxide mounts and Gram stain under the microscope and cultured on Sabouraud's dextrose agar plates. In identification of superficial mycoses, the rate was found to be 14% with the cultural method and 14% with direct microscopic examination. Using a combination of direct microscopic examination and culture, a 33.8% ratio was achieved. In the culture of these samples, the most isolated factor was Trichophyton rubrum (33.7%. In 24 of the patients (19.8% Corynebacterium minutissimum was detected by Gram staining, in 6 of these patients Trichophyton rubrum was found, Trichophyton mentagrophytes was found in 2 and Trichosporon spp. was found in 1. The examination of interdigital foot lesions in the laboratory, the coexistence of erythrasma with dermatophytes and yeast should be considered.

  6. Traumatic arteriovenous fistula of the superficial temporal artery

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    Otacílio de Camargo Júnior

    2014-03-01

    Full Text Available Arteriovenous fistulae of the superficial temporal artery are rare, and their principal cause is traumas. Complications include pulsatile mass, headache, hemorrhage and deformities that compromise esthetics. Treatment can be performed using conventional surgery or endovascular methods. The authors describe a case of a 44-year-old male patient who developed a large pulsating mass, extending from the preauricular region to the right parietotemporal and frontal regions after a motorcycle accident. The treatment chosen was complete surgical removal of the pulsatile mass and ligature of the vessels feeding the fistula.

  7. Superficial thrombophlebitis (Mondor′s Disease after breast augmentation surgery

    Directory of Open Access Journals (Sweden)

    Viana Giovanni Andre

    2008-01-01

    Full Text Available Although the aetiology of Mondor′s disease remains unclear, the most commonly cited cause is trauma of some sort. Although surgical trauma has frequently been quoted, reports that specifically implicate aesthetic breast surgery are unusual in the literature. In this article, the authors report a case of superficial thrombophlebitis of the anterolateral chest wall secondary to breast augmentation surgery in a woman, five months after the procedure. The authors performed an analysis of the disease′s main etiologic components and preponderant clinical aspects, and determined all appropriate therapeutic measures.

  8. Superficies orgánicas para la ciudad

    OpenAIRE

    Neila Gonzalez, Francisco Javier

    2010-01-01

    La ciudad actual se ha convertido en un modelo poco sostenible, de difícil habitabilidad, debido al tiempo que hay que dedicar a los desplazamientos, a la falta de comunicación por la falta de espacios públicos de relación y al ruido urbano, y con ambientes muchas veces irrespirables que afectan al bienestar y la salud. La fundación y construcción de las ciudades produjo una dramática transformación de la naturaleza del terreno: de suelos naturales a suelos artificiales. Las superficies veget...

  9. Métricas conformes en superficies compactas con frontera

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    Gonzalo García

    2003-01-01

    Full Text Available Sea (S; g una superficie Riemanniana compacta con frontera. En este trabajo discutimos el problema de la curvatura gaussiana y la curvatura geodésica prescritas sobre S y su frontera @S, respectivamente. Si la característica de Euler x(S de S es no positiva, encontramos condiciones sobre las funciones ~k definida sobre S y ~h definida sobre @S para que exista una métrica ~g, conforme a la métrica g, con curvatura de Gauss ~k sobre S y curvatura geodésica ~h sobre la frontera de S.

  10. Evaluación de existencia de capa de alta velocidad mediante inversión conjunta ReMi-HV : aplicación a dos localidades de Barcelona.

    OpenAIRE

    Vitolla Avila, Mery

    2013-01-01

    Resultados de proyectos previos llevados a cabo en la ciudad de Barcelona bien sea de construcción o para la caracterización geológica del subsuelo, han arrojado la presencia de una capa somera de gravas y bolos de gran densidad y permeabilidad en la Zona Franca de la ciudad. Para estimar y delimitar de forma fiable la presencia ...

  11. Caracterización de la capa de boruros formada durante la austenización de un hierro nodular austemperizado//Characterization of borides coating formed during austenitization of an austempered ductile iron

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    Urbano Ordóñez‐Hernández

    2015-01-01

    Full Text Available En este trabajo se ha investigado el efecto de la austenitización y el borurado simultáneos, a 950 ºC, en la microestructura, la microdureza Vickers y el espesor de la capa borurada en medio líquido de un hierro nodular austemperizado no aleado. Se demostró que es posible obtener una capa de boruros de hierro muy bien estructurada con la microdureza Vickers suficientemente alta (1400 HVy con adecuado espesor de capa de 67 μm, sobre un sustrato de ausferrita típico de las fundiciones nodulares austemperizadas. Por medio de un ensayo pin on disc modificado, se comprobó la superior resistencia al desgaste abrasivo de la capa de boruros depositada durante la austenización del ADI, comparada con la máxima obtenida durante el austempering de éste sin aplicar el recubrimiento.Palabras claves: hierro nodular, borurado, austenización, austemperizado.______________________________________________________________________________AbstractThe effect of simultaneous austenitization and boriding at 950 ºC, on microstructure, Vickers hardness and boronized layer thickness of a non alloyed austempered ductile iron has been investigated. It was demonstrated that it is possible to obtain a well formed boronized layer with a Vicker hardness sufficiently high (1400 HV, and with an appropriated 67μm layer thickness, on a typical ausferrite ADI substrate. By using a modified pin on disc test, it was demonstrated the higher abrasion wear resistance of borides layer deposited during ADI austenitization process, compared with Vickers hardness of low temperature noncoated austempered ductile iron.Key words: ductile iron, boriding, austenitization, austempering.

  12. The superficial ulnar artery: development and clinical significance Artéria ulnar superficial: desenvolvimento e relevância clínica

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    Srinivasulu Reddy

    2007-09-01

    Full Text Available The principal arteries of the upper limb show a wide range of variation that is of considerable interest to orthopedic surgeons, plastic surgeons, radiologists and anatomists. We present here a case of superficial ulnar artery found during the routine dissection of right upper limb of a 50-year-old male cadaver. The superficial ulnar artery originated from the brachial artery, crossed the median nerve anteriorly and ran lateral to this nerve and the brachial artery. The superficial ulnar artery in the arm gave rise to a narrow muscular branch to the biceps brachii. At the elbow level the artery ran superficial to the bicipital aponeurosis where it was crossed by the median cubital vein. It then ran downward and medially superficial to the forearm flexor muscles, and then downward to enter the hand. At the palm, it formed the superficial and deep palmar arches together with the branches of the radial artery. The presence of a superficial ulnar artery is clinically important when raising forearm flaps in reconstructive surgery. The embryology and clinical significance of the variation are discussed.As principais artérias do membro superior apresentam uma ampla variação, que é relativamente importante a cirurgiões ortopédicos e plásticos, radiologistas e anatomistas.Apresentamosumcaso de artéria ulnar superficial encontrada durante dissecção de rotina de membro superior direito de um cadáver masculino de 50 anos de idade.Aartéria ulnar superficial originava-se da artéria braquial, cruzava o nervo mediano anteriormente e percorria lateralmente esse nervo e a artéria braquial. A artéria ulnar superficial no braço deu origem a um ramo muscular estreito do músculo bíceps braquial. Ao nível do cotovelo, a artéria percorria superficialmente a aponeurose bicipital, onde era cruzada pela veia cubital mediana. Percorria, então, em sentido descendente e medialmente superficial aos músculos flexores do antebraço, e então descendia para

  13. Clinical Evaluation of Superficial Fungal Infections in Children

    Directory of Open Access Journals (Sweden)

    Ragıp Ertaş

    2015-12-01

    Full Text Available Objective: This retrospective study was referred to evaluate 51 cases of superficial mycoses, referred to our Pediatric Dermatology outpatient clinic in one year. Methods: We reviewed following data for all patients: age, gender, accompanied diseases, clinical types, localization and treatment. Superficial mycotic infections were diagnosed on the basis of clinical picture, direct microscopy and some of them were confirmed by fungal cultures. Results: Our patients comprised 33 boys (64.7% and 18 girls (35.3%, with an average age of 6.2 years (range 4 months to 17 years. Eighteen patients (35.3% had dermatophytes on the scalp. Clinical forms, in the order of frequency, were: tinea capitis profunda in 10 patients (19.6%, tinea capitis superficialis in 8 patients (15.8%, tinea unguium in 8 patients (15.8%. Tinea capitis (35.3% was the most frequent form of dermatomycosis. The most common symptom was the pruritus. Thirty (58% patients were treated with local antimycotics and 21 (42% patients were treated with systemic terbinafine or itraconazole. Conclusion: In this study it was found that, tinea capitis was the most frequent form of dermatomycosis and onychomycosis in children are not uncommon as it is mentioned. The data also suggest that topical antifungal agents may be effective and well-tolerated in the treatment of onychomycosis and tinea capitis in children.

  14. Aneurysms of the superficial venous system: classification and treatment

    Directory of Open Access Journals (Sweden)

    Ronald G. Bush

    2014-11-01

    Full Text Available Superficial venous aneurysms are rarely described and they may remain indolent or become the source for pulmonary emboli. A system of classification and treatment protocol according to size and location is proposed. Three hundred thirty patients were evaluated for symptomatic venous disease (C2-C6 over a 2-year period. A proposed designation for venous aneurysm is described. Patients fulfilling this criterion are described in reference to site of involvement, histologic findings, and method of treatment. Five percent of patients met the criteria for venous aneurysm. Nine aneurysms of the greater saphenous vein were identified. Three aneurysms were proximal to the subterminal valve and the rest were distal. Six aneurysms of the anterior accessory greater saphenous vein (AAGSV were identified. Three aneurysms of the AAGSV spontaneously thrombosed. Two patients presented with aneurysms of the small saphenous vein. Histology revealed thickened intima, smooth muscle and adventitia. Aneurysm designation relates to diameter of normal and contiguous vein. All superficial venous aneurysms in close proximity to the junction of the femoral or popliteal vein should be ligated. Classification of venous aneurysms should include the AAGSV, which may present with spontaneous thrombosis.

  15. Indications of endoscopic and thoracoscopic treatments for superficial esophageal carcinoma

    International Nuclear Information System (INIS)

    Explained are the treatments in the title involving chemo-radiotherapy application. At present, the endoscopic mucosal resection (EMR) and esophagectomy/reconstruction surgery are the major treatments of the esophageal cancer and EMR results in complete cure in most cases with superficial lesion. Authors' step-up strategy is the EMR for superficial cancer even with suspicious submucosal lesion, followed by histological examination for subsequent therapy below. For cases out of EMR indication or with high metastatic risk revealed after EMR above, the surgery and subsequent chemo-radiotherapy are indicated but significance of the latter is not established despite its recent increasing application. Endoscopic submucosal dissection (ESD) has been recently approved in the health insurance and is to be widely applied in future. However, these endoscopic treatments of esophagus, differing from those of stomach and large intestine, already have a wide range of indication and result in a sufficiently good local control, and therefore will not greatly contribute to the further improvement of quality of life (QOL) and survival. Endoscopic options other than EMR and ESD are the disruption by radiofrequency, photo-dynamic therapy by laser or photo-sensitizer, argon plasma coagulation (APC), authors' APC-subepthelial ablation, pure alcohol injection, etc. Thoracoscopic esophagectomy is now under clinical trial for submucosal cancer. (R.T.)

  16. Detección por cromatografía de capa fina (CCF de metabolitos antinfúngicos producidos de Pseudomonas aeruginosa cepa PSS

    Directory of Open Access Journals (Sweden)

    Magdalena Lorenzo

    2006-01-01

    Full Text Available Se muestran los resultados preliminares obtenidos de la detección de extractos orgánicos de metabolitos antifúngicos de Pseudomonas aeruginosa cepa PSS por cromatografía de capa fina (CCF. Las extracciones fueron llevadas a cabo con acetato de etilo y la fase orgánica se analizó por TLC empleando el sistema de solvente cloroformo: acetona (3:1 como fase móvil. Para discernir el metabolito con actividad antifúngica se realizó un ensayo de Bioautografía utilizando el hongo Aspergillus flavus. Como resultado, se observó una mancha con Rf entre 0.70-0.80 detectada a luz ultravioleta (255 nm y revelada con vainillina que presenta actividad antifúngica, por lo que es posible de una manera preliminar detectar los metabolitos antifúngicos mediante la combinación de estos dos métodos.

  17. Computed Tomographic Study of Superficial Fascia of the Abdomen: Implication to Localized Fat Deposits (LFD) Areas

    OpenAIRE

    Pandey AK; Kumar P; Radhakrishnan P; Kumar S; Kotian SR; D'Souza A; D'Souza AS

    2015-01-01

    Background: Superficial fascia of the abdomen, being a supportive structure plays a vital role in abdominal localized fat deposits (LFDs) as well as in surgical treatment of obesity. Interest in the anatomy of the superficial fascia is increasing with increasing popularity of surgical procedures for abdominal obesity. The study aims at computed tomographic evaluation and classification of the superficial fascia of abdomen & comparing with the earlier published cadaveric study. Materials and m...

  18. A ganglion cyst at the elbow causing superficial radial nerve compression: a case report

    OpenAIRE

    McFarlane John; Trehan Ravi; Oliveira Miguel; Jones Carl; Blease Simon; Davey Paul

    2008-01-01

    Abstract Introduction We report a rare case of a ganglion cyst at the elbow causing neurological symptoms by stretching the superficial radial nerve alone. Ganglia associated with radial nerve palsy at the elbow have been reported previously involving the deep branch of the posterior interosseous nerve and the superficial radial nerve, but not the superficial radial nerve alone. Case presentation A 45-year-old woman presented with a 4-month history of a painful lump in the anterior aspect of ...

  19. Superficial Granulomatous Pyoderma Gangrenosum of the Penis: A Case Report

    Directory of Open Access Journals (Sweden)

    Shyamala S. Gopi

    2006-01-01

    Full Text Available Classic type of pyoderma gangrenosum (PG is an uncommon ulceronecrotic cutaneous disease of uncertain aetiology characterised by broad zones of confluent ulceration with violaceous undermined margins. Some 50% of cases are associated with systemic diseases. The superficial granulomatous variant of pyoderma gangrenosum (SGPG of the external genitalia is extremely rare Patients with this condition develop single or multiple ulcerated skin lesions often with sinus tract formation. The majority of these lesions were found on the trunk and limbs. SGPG is less likely to be associated with underlying disease processes than classic PG. We present a 58 year-old with recalcitrant penile ulceration demonstrated to be SGPG on biopsy. Although rare and poorly recognised, the histological features are sufficiently typical to allow the correct diagnosis to be established.

  20. 3D simulation of plant and living tissue superficial lesions

    Science.gov (United States)

    Bratchenko, Ivan A.; Sindyaeva, Alexandra R.; Zakharov, Valery P.

    2008-06-01

    The analytic schemes of calculated absorbed and scattered radiation spatial distribution in multilayer plant and living tissues and diagnostic of their physical state are presented. The correct realization of these tasks was obtained with 3D Monte Carlo simulation of optical radiation propagation through multiple scattering medium in TracePro environment. Analysis of simulation data was made by differential backscattering method, which allows to investigate general backscattered radiation dependences on optical and geometrical parameters of living tissue. It was shown that obtained results formed the basis for developing an algorithm of optical superficial inhomogeneous registration and spatial localization. Such diagnosis can be executed in tissues of any arbitrary surface structure. Designed scheme is intended to utilize in contactless macro diagnostics device. The same approach was used for simulation of optical spectra of healthy and diseased virtual leaves for plant tissue pathological changes revealing.

  1. Photoluminescence of acupoint 'Waiqiu' in human superficial fascia

    International Nuclear Information System (INIS)

    The spectral characters of an acupuncture point named 'Waiqiu' in superficial fascia tissue have been studied by photoluminescence (PL) spectroscopy under the excitation of 457.9 nm. The PL around 'Waiqiu' acupuncture point consists of two sub-bands resulting from the flavin adenine dinucleotide (FAD) and phospholipids, and the porphyrins (including purine, isoxanthopterin and tryptophan), respectively. More emission due to FAD and phospholipids is found inside the acupuncture effect area of 'Waiqiu' than its marginal or outside acupuncture regions. The ratio of emission intensity of FAD and phospholipids to one of porphyrins gradually decreases along the direction away from the center of the acupuncture point. It implies that the component proportion changes between FAD, phospholipids and porphyrins around the 'Waiqiu' acupuncture point. We suggest that there might be a certain relationship between redox function of FAD and 'Waiqiu' acupuncture effect

  2. GÉNEROS BACTERIANOS DOMINANTES EN LOS ESTRATOS FOLIARES DEL TABACO CURADO PARA CAPAS. INFLUENCIA DE LA NICOTINA Y EL pH SOBRE SU DENSIDAD POBLACIONAL

    Directory of Open Access Journals (Sweden)

    Yunior M. Morán Gómez

    2013-01-01

    Full Text Available Aunque las bacterias juegan un papel importante en el proceso fermentativo del tabaco, en Cuba no se han identificado los géneros presentes en el tabaco curado para capas, ni las variables que afectan a sus poblaciones. Este conocimiento pudiera contribuir al manejo de los procesos en los que estos microorganismos intervienen. El objetivo de esta investigación fue determinar la relación que existe entre la densidad poblacional de los géneros bacterianos dominantes en los diferentes estratos foliares de la planta de tabaco luego de la curación y la concentración de nicotina y los valores de pH en estos ambientes. Se realizó el aislamiento e identificación genérica de la microbiota bacteriana y se determinó el contenido de nicotina y el pH de las hojas de tabaco para cada estrato foliar. Las poblaciones de Bacillus en todos los estratos foliares siempre fueron superiores a otros géneros aislados como Staphylococcus y Arthrobacter . Desde los niveles foliares inferiores hasta los superiores el contenido de nicotina se incrementó significativamente, el pH mostró una ligera disminución (no significativa p<0,01 y disminuyó la densidad poblacional de bacterias de todos los géneros aislados. El modelo de regresión reveló que la disminución de la densidad poblacional de los géneros bacterianos que se aprecia al ascender por los diferentes niveles foliares estuvo más relacionada con el incremento de la concentración de nicotina en las hojas que con la variación del pH.

  3. Modification of Skin Surface Biopsy for Scanning Electron Microscopic Observation of Superficial Fungal Infection

    OpenAIRE

    高垣, 謙二; 山田, 義貴; 川崎, 洋司; 大畑, 力; 地土井, 襄爾

    1984-01-01

    A modified skin surface biopsy for scanning electron microscopic observation of superficial fungal infection was introduced. Our method has the following advantages which are adequate for routine ultrastructural investigation on superficial fungal infections : 1) atraumatic, 2) convenient, 3) able to obtain a wide area, and 4) minimal chance of getting artifacts.

  4. Superficial perineal leiomyosarcoma in an adolescent female and a review of the literature including vulvar leiomyosarcomas

    DEFF Research Database (Denmark)

    Grove, A; Backman Nøhr, S

    1992-01-01

    Superficial perineal leiomyosarcomas are rare, with only three previously reported examples. We encountered a superficial (deep subcutaneous) perineal leiomyosarcoma in a 17-year-old female. At follow-up two years after a wide excision, there were no signs of recurrence. The tumour was well diffe...

  5. Value of Superficial Cultures: Diagnosing neonatal sepsis in a community hospital

    OpenAIRE

    Paes, Bosco A.; Modi, Anjana

    1992-01-01

    In a study of babies younger than 2 weeks who were admitted to a community neonatal facility with suspected sepsis, pathogenic organisms grown from superficial swab samples were compared with those from deep cultures to meet the gold standard definition of true sepsis. We conclude that superficial cultures have limited value in the diagnosis of neonatal sepsis in a community setting.

  6. Cambios de volumen, área superficial y factor de forma de Heywood durante la deshidratación de cerezas (Prunus avium Mudanças de volume, área superficial e fator de forma de Heywood durante a desidratação de cerejas doces (Prunus avium

    Directory of Open Access Journals (Sweden)

    Antonio de Michelis

    2008-06-01

    Full Text Available En este trabajo, se evaluaron experimentalmente los cambios de volumen, área superficial y factores de forma durante la deshidratación de cerezas enteras. En base a los resultados obtenidos, se propusieron modelos muy simples para la evaluación matemática de dichos cambios para su uso en simulación de lechos profundos de partículas. Los cambios de volumen se pudieron representar con una ecuación lineal y los de área superficial con un polinomio de tercer orden, en ambos casos como una función de la humedad adimensional del producto. Con respecto a la evaluación de los factores de forma, se encontró que las partículas, cuanto más se deshidratan, más tienden a la forma esférica, lo cual es un hecho auspicioso, ya que no sólo el producto posee un aspecto visual agradable, sino que se habilita la utilización de la forma esférica para los efectos de adoptar una dimensión característica para la evaluación de cinéticas de deshidratación en monocapa y/o en lechos de partículas.Neste trabalho foram avaliadas, experimentalmente, as mudanças de volume, área superficial e fatores de forma durante a secagem de cerejas doces inteiras. Com base nos resultados obtidos foram propostos modelos muito simples para a avaliação matemática dessas mudanças para seu uso em simulação de leitos fundos de partículas. As mudanças de volume foram representadas com uma equação linear e as mudanças de área superficial com um polinômio de terceiro grau, em ambos os casos como uma função da umidade adimensional do produto. Em relação à avaliação dos fatores de forma, foi achado que as partículas quanto mais desidratadas mais se esparramaram em forma esférica, o que é um fato favorável, já que o produto não só possui um aspecto visual agradável mas também habilita à utilização do modo esférico os efeitos de adotar uma dimensão característica para a avaliação de cinéticas de desidratação em capas magras ou em leitos

  7. Estudio del estado físico-mecánico de superficies tratadas por deformación plástica superficial. // Study of the mechanical and physical behavior of surfaces treated by superficial plastic deformation.

    Directory of Open Access Journals (Sweden)

    O. Boada Carrazana

    2003-05-01

    Full Text Available El presente trabajo aborda lo referente al estado del arte de la modelación y el comportamiento de las superficies tratadapor deformación plástica superficial (DPS. Se hace una breve descripción de la modelación elástica y plástica, de la teoríade la plasticidad y de las dislocaciones y se dan algunos resultados sobre la modelación del rodilado usando las técnicasde simulación y modelación, como el método de los elementos finitos, a partir del cual se obtienen los modelosmatemáticos para calcular las tensiones y deformaciones máximas.Palabras claves: deformación plástica superficial, rodilado, bruñido por rodillo, elementos finitos,modelación.____________________________________________________________________________Abstract.This paper deals with the state of the art of modelation and the behaviour of surfaces treated by superficial plasticdeformation. It is given a brief description of the elastic and plastic modelation, theory of plasticity and dislocations, andshowed some results about modelation of roller burnishing using simulation techniques like finite elements method toobtain the mathematics models in order to calculate the maximum stresses and strains.Key words: Superficial plastic deformation, roller burnishing, finite elements method, modelation.

  8. Color doppler sonography of patients with temporal arteritis: Comparison with normal superficial temporal artery

    International Nuclear Information System (INIS)

    To evaluate the color doppler sonographic findings of superficial temporal artery of patients with temporal arteritis in comparison with normal superficial temporal artery. The superficial temporal arteries and their frontal and parietal branches were examined by color doppler sonography in 6 patients with temporal arteritis and 30 normal controls. Vessel diameter, vessel wall thickness, peak systolic velocity, end-diastolic velocity and resistive index in proximal and distal portion of superficial temporal arteries and their frontal and parietal branches were examined. For statistical analysis, Student's t-test was used and a p-value<0.01 was considered significant. Mean vessel wall thickness, peak systolic velocity in patients with temporal arteritis were 0.63 0.08 mm and 49.25 11.93 cm/sec,respectively inproximal superficial temporal arteries; 0.63 0.17 mm and 30.53 11.57 cm/sec in distal superficial temporal arteries. Mean vessel wall thickness of normal branches of superficial temporal arteries in patients with temporal arteries was 0.62 0.11 mm. The vessel wall superficial temporal arteries and their frontal branches in temporal arteries group was thicker than normal control group (p<0.01). The mean peak velocity of main superficial temporal arteries in temporal arteries group was significantly lower than normal control group (p<0.01). The vessel wall was hypoechoic in temporal arteries group. We obtained various color doppler sonographic findings in patients with temporal arteritis for comparison with normal group. The wall thickness, the peak systolic velocity and wall echogenicity of superficial temporal artery could be useful in diagnosis of temporal arteritis.

  9. A graphene superficial layer for the advanced electroforming process

    Science.gov (United States)

    Rho, Hokyun; Park, Mina; Lee, Seungmin; Bae, Sukang; Kim, Tae-Wook; Ha, Jun-Seok; Lee, Sang Hyun

    2016-06-01

    Advances in electroplating technology facilitate the progress of modern electronic devices, including computers, microprocessors and other microelectronic devices. Metal layers with high electrical and thermal conductivities are essential for high speed and high power devices. In this paper, we report an effective route to fabricate free-standing metal films using graphene as a superficial layer in the electroforming process. Chemical vapor deposition (CVD) graphene grown on a Cu foil was used as a template, which provides high electrical conductivity and low adhesive force with the template, thus enabling an effective electroforming process. The required force for delamination of the electroplated Cu layer from graphene is more than one order smaller than the force required for removing graphene from the Cu foil. We also demonstrated that the electroformed free-standing Cu thin films could be utilized for patterning microstructures and incorporated onto a flexible substrate for LEDs. This innovative process could be beneficial for the advancement of flexible electronics and optoelectronics, which require a wide range of mechanical and physical properties.Advances in electroplating technology facilitate the progress of modern electronic devices, including computers, microprocessors and other microelectronic devices. Metal layers with high electrical and thermal conductivities are essential for high speed and high power devices. In this paper, we report an effective route to fabricate free-standing metal films using graphene as a superficial layer in the electroforming process. Chemical vapor deposition (CVD) graphene grown on a Cu foil was used as a template, which provides high electrical conductivity and low adhesive force with the template, thus enabling an effective electroforming process. The required force for delamination of the electroplated Cu layer from graphene is more than one order smaller than the force required for removing graphene from the Cu foil

  10. Bacillus Calmette-Guerin immunotherapy of superficial bladder cancer.

    Science.gov (United States)

    Lamm, D L; Thor, D E; Harris, S C; Reyna, J A; Stogdill, V D; Radwin, H M

    1980-07-01

    Thirty-seven patients were enrolled in a randomized prospective study to compare standard surgical therapy for superficial bladder cancer to standard therapy plus bacillus Calmette-Guerin (BCG). Side effects of BCG have been tolerated well and include dysuria in 95 per cent of the patients, urinary frequency in 83 per cent, hematuria in 39 per cent, fever in 22 per cent and nausea in 22 per cent. Of 19 control patients 8 (42 per cent) had recurrent tumors in the followup period, compared to 3 of 18 patients (17 per cent) treated with BCG. One patient treated wih BCG had 2 recurrences, yielding a recurrence rate of 22 per cent in the group receiving BCG compared to 42 per cent in controls. When the incidence of recurrent tumors in matched intervals before and after entry into the protocol is compared, no change in the rate of tumor recurrence (p equals 0.726 chi-square) occurred in controls, whereas tumor recurrences were reduced significantly in the group treated with BCG (p equals 0.010 chi-square). The reduction in tumor recurrence in patients treated with BCG compared to controls is statistically significant (p equals 0.029 chi-square). Of 4 patients who presented with new bladder tumors remain free of tumor after BCG therapy, while 2 of 5 comparable control patients developed recurrent tumors. Intravesical and percutaneous BCG immunotherapy appears to decrease the rate of tumor recurrence in patients followed for 1 year. PMID:6997513

  11. Preoperative transcutaneous electrical nerve stimulation for localizing superficial nerve paths.

    Science.gov (United States)

    Natori, Yuhei; Yoshizawa, Hidekazu; Mizuno, Hiroshi; Hayashi, Ayato

    2015-12-01

    During surgery, peripheral nerves are often seen to follow unpredictable paths because of previous surgeries and/or compression caused by a tumor. Iatrogenic nerve injury is a serious complication that must be avoided, and preoperative evaluation of nerve paths is important for preventing it. In this study, transcutaneous electrical nerve stimulation (TENS) was used for an in-depth analysis of peripheral nerve paths. This study included 27 patients who underwent the TENS procedure to evaluate the peripheral nerve path (17 males and 10 females; mean age: 59.9 years, range: 18-83 years) of each patient preoperatively. An electrode pen coupled to an electrical nerve stimulator was used for superficial nerve mapping. The TENS procedure was performed on patients' major peripheral nerves that passed close to the surgical field of tumor resection or trauma surgery, and intraoperative damage to those nerves was apprehensive. The paths of the target nerve were detected in most patients preoperatively. The nerve paths of 26 patients were precisely under the markings drawn preoperatively. The nerve path of one patient substantially differed from the preoperative markings with numbness at the surgical region. During surgery, the nerve paths could be accurately mapped preoperatively using the TENS procedure as confirmed by direct visualization of the nerve. This stimulation device is easy to use and offers highly accurate mapping of nerves for surgical planning without major complications. The authors conclude that TENS is a useful tool for noninvasive nerve localization and makes tumor resection a safe and smooth procedure. PMID:26420473

  12. A graphene superficial layer for the advanced electroforming process.

    Science.gov (United States)

    Rho, Hokyun; Park, Mina; Lee, Seungmin; Bae, Sukang; Kim, Tae-Wook; Ha, Jun-Seok; Lee, Sang Hyun

    2016-07-01

    Advances in electroplating technology facilitate the progress of modern electronic devices, including computers, microprocessors and other microelectronic devices. Metal layers with high electrical and thermal conductivities are essential for high speed and high power devices. In this paper, we report an effective route to fabricate free-standing metal films using graphene as a superficial layer in the electroforming process. Chemical vapor deposition (CVD) graphene grown on a Cu foil was used as a template, which provides high electrical conductivity and low adhesive force with the template, thus enabling an effective electroforming process. The required force for delamination of the electroplated Cu layer from graphene is more than one order smaller than the force required for removing graphene from the Cu foil. We also demonstrated that the electroformed free-standing Cu thin films could be utilized for patterning microstructures and incorporated onto a flexible substrate for LEDs. This innovative process could be beneficial for the advancement of flexible electronics and optoelectronics, which require a wide range of mechanical and physical properties. PMID:26949072

  13. Saphenous Vein Sparing Superficial Inguinal Dissection in Lower Extremity Melanoma

    Directory of Open Access Journals (Sweden)

    Muhammed Beşir Öztürk

    2014-01-01

    Full Text Available Aim. The classic inguinal lymph node dissection is the main step for the regional control of the lower extremity melanoma, but this surgical procedure is associated with significant postoperative morbidity. The permanent lymphedema is the most devastating long-term complication leading to a significant decrease in the patient’s quality of life. In this study we present our experience with modified, saphenous vein sparing, inguinal lymph node dissections for patients with melanoma of the lower extremity. Methods. Twenty one patients (10 women, 11 men who underwent saphenous vein sparing superficial inguinal lymph node dissection for the melanoma of lower extremity were included in this study. The effects of saphenous vein sparing on postoperative complications were evaluated. Results. We have observed the decreased rate of long-term lymphedema in patients undergoing inguinal lymphadenectomy for the lower extremity melanoma. Conclusion. The inguinal lymphadenectomy with saphenous vein preservation in lower extremity melanoma patients seems to be an oncologically safe procedure and it may offer reduced long-term morbidity.

  14. Superficial effects during the activation of zirconium AB2 alloys

    International Nuclear Information System (INIS)

    The activation of zirconium nickel alloys with and without the addition of chromium and titanium is investigated through electrochemical and optical techniques.These alloys show high hydrogen absorption capacity and are extensively used in metal hydride batteries.Recent investigations in aqueous 1 M KOH indicate oxide layer growth and occlusion of hydrogen species in the alloys during the application of different cathodic potential programmes currently used in the activation process.In this research several techniques such as voltammetry, ellipsometry, energy dispersive analysis of X-rays EDAX, and scanning electron microscopy SEM are applied on the polished massive alloy Zr1-xTix, x=0.36 y 0.43, and Zr1-xTixCrNi, x=0.1,0.2 y 0.4.Data analysis shows that the stability, compactness and structure of the passive layers are strongly dependent on the applied potential programme.The alloy activation depends on the formation of deepen crevices that remain after a new polishing. Microscopic observation shows increase in the crevices thickness after the cathodic sweep potential cycling, which produces fragmentation of the grains and oxide growth during the activation process.This indicates metal breaking and intergranular dissolution that take place together with oxide and hydride formation.In some cases the resultant crevice thickness is one or two orders higher than that of the superficial oxide growth indicating intergranular localised corrosion

  15. Experimental Study on Mine Spoils During Superficial Geochemistry Processes

    Institute of Scientific and Technical Information of China (English)

    王一先; 白正华

    2002-01-01

    Based on the mineral and chemical compositions of spoils taken from the Shilu Cu-Mo deposit and Hetai gold deposit, the leaching and batch experiments were made on spoils taken from these two deposits using the leaching column designed by the authors. The experimental results showed that it is not always true that the mine drainage is acidic. Its acidity depends on acid-buffering capacity of gangue, host rock and its alteration mineral assemblage. The composition of the drainage water is related with the interaction between superficial or underground water and solid materials in the spoils, including minerals, hydroxides and amorphous substances. The leaching extent of the element is related with its occurrence form in the deposit. The preferential flow results in leaching-out of heavy metals in large amounts. So it is important to prevent the generating of preferential flow in the system. The results will provide very important grounds for the comprehensive management of land and ecological rehabilitation of the mine site.

  16. Experimental Study on Mine Spoils During Superficial Geochemical Processes

    Institute of Scientific and Technical Information of China (English)

    王一先; 白正华

    2002-01-01

    Based on the mineral and chemical compositions of spoils taken from the Shilu Cu-Mo deposit and Hetai gold deposit ,the leaching and batch experiments were made on spoils taken from these two deposits using the leaching column designed by the authors.The experimental results showed that it is not always true that the imine drainage is acidic.Its acidity depends on acid-buffering capacity of gangue,host rock and its alteration mineral assemblage.The composi-tion of the drainage water is related with the interaction between superficial or underground water and solid materials in the spoils,including minerals,hydroxides and amorphous substances.The leaching extent of the element is related with its occurrence form in the deposit.The prefer-ential flow results in leaching-out of heavy metals in large amounts.So it is important to prevent the generating of preferential flow in the system.The results will provide very important grounds for the comprehensive management of land and ecological rehabilitation of the mine site.

  17. Fine-needle aspiration cytology in children with superficial lymphadenopathy

    Directory of Open Access Journals (Sweden)

    F. De Corti

    2014-04-01

    Full Text Available Introduction: In pediatric population Fine-Needle Aspiration Citology (FNAC is slowly gaining acceptance in clinical management of Superficial Lymphadenopathy (SL. Our experience adds some data about the usefulness of this technique in diagnosing the cause of a SL and therefore guiding further treatment. Patients and Methods: 238 FNAC were performed in 217 patients with SL, observed at our Institution from 2002 to 2006. The neck was the most frequent localization. The results were available within few hours. In cases of granulomatous findings, the samples were processed for microbiological and PCR test, in order to identify Mycobacteria. Results: 174 were reactive lesions, 38 granulomatous lymphadenopathies, 24 malignant lesions, 2 specimens inadequate for diagnosis. Among the 174 reactive SL, 22 required an incisional biopsy after 1 month follow-up. Among the granulomatous lymphadenopathies, 13 children with Cat-Scratch Disease recovered, 25 with Mycobacteria infection underwent surgical excision. For 24 malignant lesions, the diagnosis was confirmed by further biopsy. Two false negative and no false positive were detected (sensitivity 92%, specificity 100%. No complications were encountered. Conclusions: In our experience FNAC, performed by experienced cytopathologist, has revealed to be a fast, safe, non invasive and inexpensive method to achieve diagnosis in persistent SL. The use of FNAC gave us the possibility to select patients for further investigation and/or surgical treatment. Incisional biopsy remains necessary to confirm the diagnosis in case of malignancy or doubtful lesions.

  18. Fine-needle aspiration cytology of superficial lymph nodes.

    Science.gov (United States)

    Cardillo, M R

    1989-01-01

    A series of 244 enlarged superficial lymph nodes was examined by fine-needle aspiration cytology. Twenty-nine smears (11.9%) were inadequate for study. Of the remaining 215, 108 were negative, 13 suspicious for malignancy, and 94 positive. Forty-five excisional biopsies were performed correlating the cytologic and histologic findings. There were two cytologic false-negative results; both were patients who had been treated for carcinoma and whose aspirates were cytologically negative. Of the 13 samples reported as suspicious for malignancy, there were three epidermoid carcinomas, nine reactive hyperplasias, and one non-Hodgkin's lymphocytic lymphoma. Of the positive cases, 83 were metastatic tumors, and 11 were malignant lymphomas (two non-Hodgkin's lymphomas and nine Hodgkin's lymphomas). The criteria used in the interpretation of these aspirates and the problems of differential cytological diagnosis are discussed. In spite of the drawbacks of inadequate and false-negative smears, fine-needle aspiration cytology is valuable in preliminary diagnosis of diseased lymph nodes and subsequent management. PMID:2776599

  19. Superficial chemical peeling with salicylic acid in facial dermatoses

    International Nuclear Information System (INIS)

    To determine the effectiveness of salicylic acid chemical peeling in common dermatological conditions affecting face in people with predominant Fitzpatrick skin type IV and V. A total of 167 patients of either gender, aged between 13 to 60 years, having some facial dermatoses (melasma, acne vulgaris, postinflammatory hyperpigmentations, freckles, fine lines and wrinkles, post-inflammatory scars, actinic keratoses, and plane facial warts) were included. A series of eight weekly hospital based peeling sessions was conducted in all patients under standardized conditions with 30% salicylic acid. Clinical improvement in different disorders was evaluated by change in MASI score, decrease in the size of affected area and % reduction in lesions count. McNemar test was applied for data analysis. Majority of the patients showed moderate to excellent response. There was 35% to 63% improvement (p< 0.05) in all dermatoses. Significant side effects, as feared in Asian skins were not observed. Chemical peeling with salicylic acid is an effective and safe treatment modality in many superficial facial dermatoses. (author)

  20. GENETIC RISK MARKERS FOR SUPERFICIAL AND INVASIVE BLADDER CANCER

    Directory of Open Access Journals (Sweden)

    V. N. Pavlov

    2011-01-01

    Full Text Available To reveal possible associations of the polymorphic variants of the cytochrome P450 and enzymes glutathione-S-transferase genes with the risk for bladder cancer (BC, the authors analyzed the frequency of genotypes and alleles at the polymorphic loci of the CYP1A1 (A2454G, GSTM1 (del, and GSTP1 (A313G genes in 208 patients diagnosed as having BC (104 patients with invasive BC and 104 with superficial BC and in 367 patients without identified oncopathology. The *1A*2C (OR = 3.42 and *2C*2С (OR = 6.98 genotypes, *2C (OR = 3.73 allele of the CYP1A1 gene and the GG (OR = 2.53 genotype of the GSTP1 gene were ascertained to be genetic markers for a risk for BC. The presence of the *2C (OR = 1.69 allele of the CYP1A1 gene, the G (OR = 2.40 allele and the AG genotype (OR = 2.40 of the GSTP1 gene was associated with the invasive forms of BC. There were no substantial differences in the distribution of the frequency of genotypes of the GSTM1 gene between the samples of patients and healthy individuals.

  1. Evaluación del efecto de la administración intravítrea de ranibizumab sobre el grosor de la capa de fibras nerviosas de la retina

    OpenAIRE

    Ruiz Calvo, Aurora

    2013-01-01

    El glaucoma y la degeneración macular asociada a la edad son las dos causas más frecuentes de ceguera irreversible en los países desarrollados. En el glaucoma, se produce una pérdida progresiva en la capa de fibras nerviosas de la retina que se traduce en una pérdida progresiva de campo visual y que en fases avanzadas puede conducir a la ceguera. En la degeneración macular asociada a la edad de tipo exudativo, la proliferación de neovasos en el área macular y la consiguiente exudación y sangr...

  2. Valor diagnóstico y pronóstico de la evaluación de la capa de fibras nerviosas de la retina en la esclerosis múltiple

    OpenAIRE

    Herrero Latorre, Raquel; Polo Llorens, Vicente; Frezzotti, Pablo; García Martín, Elena

    2013-01-01

    Introducción: El tema principal de las cuatro publicaciones internacionales que componen esta tesis doctoral se centra en el estudio de la capa de fibras nerviosas de la retina en pacientes con esclerosis múltiple como método para mejorar y acelerar el proceso diagnóstico así como el seguimiento y la monitorización de esta enfermedad. Material y Métodos: Se realizó un estudio observacional y prospectivo donde se incluyeron 150 sujetos con esclerosis múltiple y 150 sujetos sanos. El protoc...

  3. Valor del grosor de la capa de fibras nerviosas de la retina medido mediante tomografía de coherencia óptica como marcador de daño neuroaxonal en la esclerosis múltiple

    OpenAIRE

    López Lizcano, Ruth María

    2012-01-01

    Estudio del valor del grosor de la Capa de Fibras Nerviosas de la Retina (CFNR) a lo largo de un año como marcador de daño neuroaxonal en pacientes con distintos estadios de Esclerosis Múltiple (EM): pacientes con síndrome clínico aislado (CIS) que es el estadio más inicial de enfermedad desmielinizante, pacientes con esclerosis múltiple remitente-recurrente (EMRR) y pacientes con esclerosis múltiple primaria-progresiva (EMPP) frente a sujetos sanos. Estudio de las posibles correlaciones exis...

  4. The specificationof nano-structure superficial layers in some of the pathogen bacteria

    Directory of Open Access Journals (Sweden)

    Shilla Jalalpoor

    2010-11-01

    Full Text Available Background: The superficial layer is a part of the cellular envelop that is seen in bacteria and archaea. This superficial layer is a single layer structure composed of subordinate proteins or glycoproteins. The superficial layer is the outer most cellular structure that is in the exchange and reaction around environment with bacteria. This structure has very diversity in bacteria different types.Materials and Method: The related articles to superficial layer were extracted of these articles: Pubmed, Elsevier Science, and Yahoo, from 1995 to 2010 years. For this purpose keywords were searched including superficial layer, pathogenesis, pathogen bacteria,Results: There is consensus in the case of the superficial layer and about the existence of this superficial structure lead to increased pathogenesis in bacteria, in all of the research articles.Conclusion: S-layers in pathogen bacteria with bacteria protection against bacteriophages and phagocytosis, resistance against low pH, adhesion, stabilisation of the membrane and providing adhesion sites for exoproteins caused pathogenesis, infection resistant and antibiotic resistant in host.The result of this study shows the prevalence of considerable S-layer in pathogen bacteria and this matter identified the bacteria generator importance of this structure in the laboratory

  5. Efecto de las heterogeneidades superficiales de las aleaciones de aluminio sobre el crecimiento y propiedades de las capas anódicas

    Directory of Open Access Journals (Sweden)

    Bartolomé, M. J.

    2007-08-01

    Full Text Available In the present work, X-ray photoelectron spectroscopy (XPS is used to study sealed and unsealed anodic coatings obtained on pure-Al and on Al-Cu, Al-Mg-Si and Al-Mg alloys. In general, the sealing process is seen to produce a significant increase in the O/Al ratio in the anodic coatings. This increase is more considerable with the Al-Cu and Al-Mg alloys than with the pure Al and the Al-Mg-Si alloy, perhaps due to the greater porosity of the coatings obtained on the former. An attempt is made to establish possible relationships between anodic film characteristics and surface heterogeneities, which also act in the phase prior to anodising. According to the results of this work, these heterogeneities affect the degree of dissolution of the metallic substrate during the anodising operation.

    En el presente trabajo se estudian, mediante el análisis XPS (espectroscopia fotoelectrónica de rayos-X, los recubrimientos de anodizado, sellados y sin sellar, obtenidos sobre Al-puro y aleaciones de Al-Cu, Al-Mg-Si y Al-Mg. En general, se observa un aumento significativo en las relaciones O/Al en el recubrimiento como resultado del proceso de sellado. En el caso de las aleaciones de Al-Cu y Al-Mg, se ha observado también un significativo aumento de la relación O/Al respecto al Al-puro y la aleación Al-Mg-Si, que puede estar asociado a una mayor porosidad de los recubrimientos obtenidos sobre las primeras. Se ha intentado así mismo establecer posibles relaciones entre las características de las capas anódicas y las heterogeneidades superficiales que también han actuado en la fase previa al anodizado. Según los resultados de este trabajo, estas mismas heterogeneidades afectan el grado de disolución del substrato metálico durante la operación de anodizado.

  6. Efecto protector de las capas de productos de corrosión de exposición atmosférica

    Directory of Open Access Journals (Sweden)

    Hernández, L. S.

    2002-04-01

    Full Text Available The electrochemical techniques of evolution of the corrosion potential (Ecorr, polarisation resistance (Rp and potentiodynamic polarisation, were used to evaluate the protectiveness of the corrosion products layers developed on commercial grade low carbon steel, zinc (galvanized steel, copper and aluminium, after an outdoor exposure of 1, 2 and 5 year in an urban atmosphere. Results obtained using a 0.1 M Na2SO4 solution revealed a greater anticorrosive protection of the four metallic materials as a result of the corrosion products formation. In addition, it was observed that when the outdoor exposure time increased the Ecorr values were more noble, those of Rp increased and the potentiodynamic anodic polarisation curves showed a greater slope of the linear regions and a shifting to the area of smaller current density in the E vs. log i diagrams. These results were not in a total agreement with those obtained by weight loss.

    Las técnicas electroquímicas de seguimiento del potencial de corrosión (Ecorr, resistencia de polarización (Rp y polarización potenciodinámica, se utilizaron para evaluar la capacidad de protección de las capas de productos de corrosión formadas sobre acero de bajo carbono, cinc (acero galvanizado, cobre y aluminio, después de 1, 2 y 5 años de exposición en una atmósfera urbana. Los resultados obtenidos, utilizando una solución 0,1 M de Na2SO4, indican una mayor protección anticorrosiva de los cuatro materiales metálicos como resultado de la formación de los productos de corrosión. Además, se observó que al aumentar la exposición a la intemperie, los valores de Ecorr fueron más nobles, los de Rp aumentaron y las curvas anódicas de polarización potenciodinámica mostraron mayor polarización y se desplazaron a la zona de menor densidad de corriente en los diagramas E vs log i. Estos resultados no tuvieron un

  7. Generación de Mallas Estructuradas en Superficie Generation of Structured Grids on Surfaces

    OpenAIRE

    João M Baltazar; Luís R Eça

    2006-01-01

    En este artículo se describe una técnica de generación de mallas estructuradas en superficie, que proporciona dos propiedades importantes: la utilización de un dominio paramétrico independiente de la forma en como la superficie es definida y la posibilidad de seleccionar el dominio computacional arbitrariamente sin tener que respetar las fronteras de la definición geométrica de la superficie. Estas propiedades son obtenidas con la introducción de una transformación de coordenadas adicional qu...

  8. Software para el cálculo de parámetros en superficies planas vibratorias

    Directory of Open Access Journals (Sweden)

    Augusto Dongua

    2014-01-01

    Full Text Available Se presenta el programa “CRIBAS II” para el cálculo de los principales parámetros de diseño y operación de las superficies planas vibratorias empleadas para la limpieza, clasificación y transportación de productos agrícolas. El software posibilita calcular los parámetros del régimen vibratorio a aplicar a la superficie (frecuencia, amplitud y dirección de las vibraciones en función de obtener el desplazamiento deseado para las partículas procesadas, durante su movimiento sobre la superficie.

  9. HDR brachytherapy for superficial non-melanoma skin cancers

    International Nuclear Information System (INIS)

    Our initial experience using recommended high dose per fraction skin brachytherapy (BT) treatment schedules, resulted in poor cosmesis. This study aimed to assess in a prospective group of patients the use of Leipzig surface applicators for High Dose Rate (HDR) brachytherapy, for the treatment of small non-melanoma skin cancers (NMSC) using a protracted treatment schedule. Treatment was delivered by HDR brachytherapy with Leipzig applicators. 36Gy, prescribed to between 3 to 4mm, was given in daily 3Gy fractions. Acute skin toxicity was evaluated weekly during irradiation using the Radiation Therapy Oncology Group criteria. Local response, late skin effects and cosmetic results were monitored at periodic intervals after treatment completion. From March 2002, 200 patients with 236 lesions were treated. Median follow-up was 66 months (range 25–121 months). A total of 162 lesions were macroscopic, while in 74 cases, BT was given after resection because of positive microscopic margins. There were 121 lesions that were basal cell carcinomas, and 115 were squamous cell carcinomas. Lesions were located on the head and neck (198), the extremities (26) and trunk (12). Local control was 232/236 (98%). Four patients required further surgery to treat recurrence. Grade 1 acute skin toxicity was detected in 168 treated lesions (71%) and grade 2 in 81 (34%). Cosmesis was good or excellent in 208 cases (88%). Late skin hypopigmentation changes were observed in 13 cases (5.5%). Delivering 36Gy over 2 weeks to superficial NMSC using HDR brachytherapy is well tolerated and provides a high local control rate without significant toxicity.

  10. Analyses of superficial and depth doses in intraoral radiology

    Energy Technology Data Exchange (ETDEWEB)

    Silva Santos de Oliveira, C.; Morais, R.P. de; Nascimento Souza, D. do [Universidade Federal de Sergipe - CCET - Dept. de Fisica, Sao Cristovao, SE (Brazil)

    2006-07-01

    In this work dosimetric analysis using thermoluminescence technique to study the beams characteristics of x-rays employed in dental radiology has been carried out. The obtained results with CaSO{sub 4}:Dy thermoluminescent dosimeters (TLD) were compared to the doses obtained with parallel-plates ionization chamber. Dosimetric evaluations were also done using radiographic films of large dimensions. The x-rays equipments analyzed were installed in the radiological services of Odontology Department of Sergipe Federal University (U.F.S.). Depending on the anatomical region to be examined the proper exposure time was select, for a fix voltage of 70 kV. The results with TLD and ionization chamber have been determined to female and male individuals. The intraoral regions analysed were the peri apical of the incisors, molar and pre-molar teeth and the occlusive region. These regions were simulated using acrylic plates absorbers installed on the film packet holder. The evaluation of the depth doses in the intraoral tissue was obtained using different acrylic plate thickness. The air kerma values have been evaluated with the ionization chamber located in the dental cone exit of the x-rays equipments. The integrated areas of the thermoluminescent glow curves showed coherent values when compared to the ones obtained with the ionization chamber and both methods presented a linear dependence with the exposition time. The analyses with films have allowed the evaluation of the beam scattering in the simulator apparatus. The studies had proven that the analysis of superficial dose and in depth used in dental radiology can be carried with thermoluminescent dosimeters. (authors)

  11. Analyses of superficial and depth doses in intraoral radiology

    International Nuclear Information System (INIS)

    In this work dosimetric analysis using thermoluminescence technique to study the beams characteristics of x-rays employed in dental radiology has been carried out. The obtained results with CaSO4:Dy thermoluminescent dosimeters (TLD) were compared to the doses obtained with parallel-plates ionization chamber. Dosimetric evaluations were also done using radiographic films of large dimensions. The x-rays equipments analyzed were installed in the radiological services of Odontology Department of Sergipe Federal University (U.F.S.). Depending on the anatomical region to be examined the proper exposure time was select, for a fix voltage of 70 kV. The results with TLD and ionization chamber have been determined to female and male individuals. The intraoral regions analysed were the peri apical of the incisors, molar and pre-molar teeth and the occlusive region. These regions were simulated using acrylic plates absorbers installed on the film packet holder. The evaluation of the depth doses in the intraoral tissue was obtained using different acrylic plate thickness. The air kerma values have been evaluated with the ionization chamber located in the dental cone exit of the x-rays equipments. The integrated areas of the thermoluminescent glow curves showed coherent values when compared to the ones obtained with the ionization chamber and both methods presented a linear dependence with the exposition time. The analyses with films have allowed the evaluation of the beam scattering in the simulator apparatus. The studies had proven that the analysis of superficial dose and in depth used in dental radiology can be carried with thermoluminescent dosimeters. (authors)

  12. Histomorphometric and sympathetic innervation of the human superficial temporal artery

    Directory of Open Access Journals (Sweden)

    Sreenivasulu Reddy

    2011-01-01

    Full Text Available Context: Following microvascular surgeries, stenosis and spasm of the arterial graft or the recipient vessel are serious complications which are often caused by intimal hyperplasia and perivascular nerves, respectively. Aims: The purpose of this study was to understand the characteristics of arterial wall and sympathetic innervation of the human superficial temporal artery (STA and also, the effect of aging on STA. Methods and Materials: Fifty-two fresh human STA (frontal branch samples were obtained from 26 cadavers (19 males and 7 females between the ages of 19 and 83 years. Samples were divided into three age groups: G1, 19-40 years; G2, 41-60 years; G3, over 61 years. 5μm-thin sections of each sample were taken and stained with haematoxylin-eosin, Verhoff′s and tyrosine hydroxylase (TH immunostaining. Results: The well-defined internal elastic lamina (IEL was observed in all samples of STA, whereas external elastic lamina (EEL was not prominent in almost all cases or absent in few cases. This might be the important factor in the process of intimal and medial hyperplasia in the frontal branch of STA. Notably, intimal thickening appeared from second decade of life. Sympathetic fibres are located mainly in tunica adventitia and outer media. Mean adventitial and sympathetic areas were found to be 0.080 and 0.010mm 2 , respectively. Statistical analysis used: One-way ANOVA followed by Tukey HSD post hoc test by using the SPSS 11.5 software. Conclusions: STA is prone to age related pathological changes. Sympathetic index may be used for analysis of sympathetic fibre-related problems (vasospasm, migraine of the STA.

  13. ESTUDIO ANATÓMICO DE LA RAMA SUPERFICIAL DEL NERVIO RADIAL. IMPLICACIONES QUIRÚRGICAS Superficial branch of radial nerve: an anatomical study and its surgical implications

    OpenAIRE

    Enrique Vergara-Amador; José Luis Nieto

    2010-01-01

    Antecedentes. Conocer la anatomía de la rama superficial del nervio radial, es indispensable para la adecuada práctica de cirugías que involucran la mano y la muñeca. Objetivo. Determinar las relaciones del nervio radial y sus ramas con el tubérculo de Lister, la apófisis estiloides del radio y la distribución en el dorso de la mano. Material y métodos. Se disecaron 25 piezas de cadáveres frescos. Se identificó la rama superficial del nervio radial y se midió la distancia entre la salida del ...

  14. Micromorfología de la capa híbrida de dos sistemas adhesivos: Análisis al MET Hibrid layer micromorphology of two adhesive systems: TEM analysis

    Directory of Open Access Journals (Sweden)

    V. Valenzuela Aránguiz

    2012-06-01

    Full Text Available Numerosos estudios evidencian que existen diferencias micromorfológicas entre los sistemas adhesivos monocomponentes y autograbantes. Con el objetivo de comparar la micromorfología de la Capa Híbrida de ambos sistemas, mediante observación al microscopio electrónico de transmisión (MET, se prepararon cavidades en seis premolares en dentina de mediana profundidad. A tres se les aplicó un sistema convencional monocomponente, y en tres se utilizó un sistema adhesivo autograbante. La capa híbrida formada por el sistema autograbante presentó un patrón regular, más delgado y homogéneo que la formada por el sistema adhesivo convencional. Los grosores promedio de esta estructura fueron de 1 μm y 2 μm respectivamente.Numerous studies show differences in micromorfological aspects between self-etchings and conventional adhesive systems. Dentin cavities were performed on 6 premolars to compare Micromorphology of the hybrid layer between both systems. One three of them self-etching system was applied, on the other three, the monocomponent conventional system. The hybrid layer formed by the self-etching system showed a regular pattern, thinner and more homogenous than the one formed by the conventional system. The average thickness of the structure was 1 ìm and 2 ìm respectively.

  15. A clinico-mycological study of superficial mycoses in upper Assam

    Directory of Open Access Journals (Sweden)

    Huda M

    1995-01-01

    Full Text Available Clinico-mycological study of one hundred clinically diagnosed cases of superficial mycoses was conducted for one year. Overall male predominance was observed and T. rubum was the commonest isolate.

  16. DETERMINATION OF SUPERFICIAL ABSORBED DOSE FROM EXTERNAL EXPOSURE OF WEAKLY PENETRATING RADIATIONS

    Institute of Scientific and Technical Information of China (English)

    陈丽姝

    1994-01-01

    The methods of determining the superficial absorbed dose distributions in a water phantom by means of the experiments and available theories have been reported.The distributions of beta dose were measured by an extrapolation ionization chamber at definite depthes corresponding to some superficial organs and tissues such as the radiosensitive layer of the skin,cornea,sclera,anterior chamber and lens of eyeball.The ratios among superficial absorbed dose D(0.07) and average absorbed doses at the depthes 1,2,3,4,5 and 6mm are also obtained with Cross's methods.They can be used for confining the deterministic effects of some superficial tissues and organs such as the skin and the components of eyeball for weakly penetrating radiations.

  17. Combination of Interscalene Brachial and Superficial Cervical Plexus Block for Fracture Clavicle Surgery

    OpenAIRE

    Anirban Pal; Nidhi Dawar; Rajarsree Biswas; Chaitali Biswas

    2011-01-01

    We report a case of interscalene brachial plexus block supplemented with superficial cervical plexus block in a patient with dilated cardiomyopathy with ejection fraction of 24% scheduled for surgery of fracture mid-shaft of clavicle.

  18. Bilateral superficial peroneal nerve entrapment secondary to anorexia nervosa: a case report

    OpenAIRE

    Doğramacı Yunus; Kalacı Aydıner; Sevinç Teoman; Yanat Ahmet

    2008-01-01

    Abstract We report a case of severe weight loss secondary to anorexia nervosa causing bilateral superficial peroneal nerve entrapment in a young female patient who was treated successfully by bilateral surgical decompression.

  19. Effects of immobilization on thickness of superficial zone of articular cartilage of patella in rats

    Directory of Open Access Journals (Sweden)

    Khadija Iqbal

    2012-01-01

    Conclusion: Each segment of superficial zone behaves differentially on immobilization and remobilization. Perhaps a much longer duration of remobilization is required to reverse changes of immobilization in articular cartilage and plays a significant role in knee joint movements.

  20. Estudios de series temporales de energía solar UV-B de 305 nm y espesor de la capa de ozono estratosférico en Arica, norte de Chile Study of time series for 305 nm solar energy UV-B and stratospheric ozone layer thickness Arica in the north of Chile

    OpenAIRE

    Miguel Rivas; Carlos Leiva; Elisa Rojas

    2011-01-01

    En este trabajo se muestran los resultados del análisis de las series temporales de la energía solar medida a nivel del suelo, en la banda de 305 nm, y el espesor de la capa de ozono estratosférico. El rasgo más importante es la independencia de los valores de energía a nivel del suelo respecto de la variabilidad de corto periodo de la capa de ozono, siendo probablemente efectos meteorológicos locales los que llevan el mayor peso de la varianza.In this paper, the results obtained by analyzing...

  1. ANTISEPTIC AND HEALING EFFECTS OF TURMERIC OINTMENT ON LOCAL APPLICATION IN SUPERFICIAL BURN

    OpenAIRE

    2012-01-01

    An ethanol extract of turmeric in Vaseline base after proper sterilization was applied topically along with Vaseline gauze (Jelonet) in 228 patients of superficial burns over small area and compared against the control group with applications of Vaseline gauze (Jalonet) alone on another area/patch of the same patients. On 3rd day itself the superficial burn wound were found chemically clean and healthy without any apparent infection in significantly greater number of cases (52%) in test group...

  2. Comparison of microbiological results of deep tissue biopsy and superficial swab in diabetic foot infections

    OpenAIRE

    Bozkurt, Fatma; Gülsün, Serda; Tekin, Recep; Hoşoğlu, Salih; Acemoğlu, Hamit

    2011-01-01

    Objectives: In this study, we aimed to compare superficial swab cultures with deep tissue biopsy cultures and also to evaluate the reliability of superficial swap cultures in diabetic foot infected patients. Materials and methods: To compare two culture methods, the hospitalized patients with diabetic foot infections were retrospectively evaluated at Dicle University and Diyarbakir Education and Research Hospital, between October 2009 and November 2010. The patients were divided two group...

  3. Gross anatomy of superficial fascia and future localised fat deposit areas of the abdomen in foetus

    OpenAIRE

    Pramod Kumar; Arvind Kumar Pandey; Brijesh Kumar; K S Aithal; Antony Sylvan Dsouza

    2013-01-01

    Background: The development and popularity of body contouring procedures such as liposuction and abdominoplasty has renewed interest in the anatomy of the superficial fascia and subcutaneous fat deposits of the abdomen. The study of anatomy of fascia and fetal adipose tissue was proposed as it may be of value in understanding the possible programing of prevention of obesity. Objectives: The present study was undertaken to understand the gross anatomy of superficial fascia of abdomen and to st...

  4. A STUDY ON SUPERFICIAL PALMAR ARCH AND IT’S VARIATIONS

    Directory of Open Access Journals (Sweden)

    Venkateswara Rao

    2015-03-01

    Full Text Available INTRODUCTION: Knowledge of the frequency of anatomical variations of arterial pattern of hand is crucial for safe and successful hand surgical approach, diagnostic and therapeutic procedures. The superficial pal mar arch is a major blood supply to the hand. Various ano malous patterns in the superficial arch of hand are reported. The superficial pal mar arch is formed predominantly by ulnar artery with a contribution from superficial branch of radial artery. OBSERVATIONS: Superficial palmar arch is dissected within the p alm and observed from its origin to termination. Variations in its origin, branches were observed. A classic superficial palmar arch was found in 10% [5/50]. O ut of dissected specimens complete arch found in 67% and incomplete arch was 33%. Incomplete arch is formed by ulnar artery alone. It supply four and half fingers and give five branches. Majority of arches is supplied by three and half fingers and gives four branches. DISCUSSION: Many attempts have been made to classify these variations. A complex cla ssification of superficial pal mar arch by Coleman & Anson [1961]. S ince then, many other classification have been suggested by different authors [Karlsson & N iechajev, 1982; al - Turk & Metcalf, 1984; Doscher et al. 1985; Ruengsakulrachh et al. 2001;] provi des simplest understanding of distribution of the arches. Although the classical pattern of the arch occurs in frequently, anatomical presence of a complete superficial palmar arch varies from 84% to 66% [Coleman & Anson]. This incidence was lower in the c urrent study and might be a reflection of sample size [52 hands]. The median artery was found in 10% of the hands, similar frequency to that reported by McCormack et al. [1953].

  5. Comparison of microbiological results of deep tissue biopsy and superficial swab in diabetic foot infections

    OpenAIRE

    Fatma Bozkurt; Hamit Acemoğlu; Salih Hoşoğlu; Recep Tekin; Serda Gülsün

    2011-01-01

    Objectives: In this study, we aimed to compare superficial swab cultures with deep tissue biopsy cultures and also toevaluate the reliability of superficial swap cultures in diabetic foot infected patients.Materials and methods: To compare two culture methods, the hospitalized patients with diabetic foot infections wereretrospectively evaluated at Dicle University and Diyarbakir Education and Research Hospital, between October 2009and November 2010. The patients were divided two groups as wit...

  6. Tolerance and safety of superficial chemical peeling with salicylic acid in various facial dermatoses

    OpenAIRE

    Iqbal Zafar; Rahman Simeen; Bari Arfan

    2005-01-01

    BACKGROUND: Chemical peeling is a skin-wounding procedure that may have some potentially undesirable side-effects. AIMS: The present study is directed towards safety concerns associated with superficial chemical peeling with salicylic acid in various facial dermatoses. METHODS: The study was a non-comparative and a prospective one. Two hundred and sixty-eight patients of either sex, aged between 10 to 60 years, undergoing superficial chemical peeling for various facial dermatoses (melasma, ac...

  7. Evaluation of Shear Bond Strength of Newer Bonding Systems on Superficial and Deep Dentin

    OpenAIRE

    Kumari, R Veena; Siddaraju, Kishore; Nagaraj, Hema; Poluri, Ramya Krishna

    2015-01-01

    Background: The purpose of this study was to compare the shear bond strength of nanocomposite resin to superficial dentin and deep dentin using two different dentin bonding systems. Materials and Methods: All teeth were sectioned at various levels (superficial dentin: Dentin within 0.5-1 mm of dentinoenamel junction; deep dentin: Dentin within 0.5 mm of the highest pulp horn) using a Carborundum Disc and embedded in acrylic block of specific size. Selected specimens (60 premolar teeth) were g...

  8. Neuroma of medial dorsal cutaneous nerve of superficial peroneal nerve after ankle arthroscopy.

    Science.gov (United States)

    Shim, Jae Sun; Lee, Ji Hyun; Han, Soo Hong; Kim, MinYoung; Lee, Hang Jae; Min, Kyunghoon

    2014-09-01

    Superficial peroneal neuropathy is a known complication of foot and ankle arthroscopy. A 27-year-old man developed pain and paresthesia on the medial side of the dorsum of his left foot after ankle arthroscopy. An electrodiagnostic study revealed conduction abnormality in the medial branch of superficial peroneal nerve, in which neuroma-in-continuity was subsequently detected by ultrasonography. After neuroma excision and nerve graft, the subject's neuropathic pain was substantially improved. PMID:24486918

  9. Photodynamic Therapy for Superficial Esophageal Cancer Using an Excimer Dye Laser

    OpenAIRE

    Seishiro Mimura; Toru Otani; Shigeru Okuda

    1994-01-01

    In order to improve the therapeutic effectiveness of photodynamic therapy with Photofrin II and laser light for superficial esophageal cancer, we employed an excimer dye laser instead of an argon dye laser. Eight superficial esophageal cancer lesions (7 cases) were treated. Of these 8 lesions, 6 were cured by initial treatment, while one lesion required another treatment. The final rate of cure was 88% (7/8).

  10. Superficial siderosis of the central nervous system due to brachial plexus injury: a case report

    International Nuclear Information System (INIS)

    Superficial siderosis can be caused by hemosiderin deposition o the leptomeninges and subpial layers of the neuro-axis due to recurrent subarachnoid haemorrhage. Probable intrathecal bleeding sites must be investigated. In ut t 50% of the patients the bleeding source may be identified and the progression of the disease can be interrupted. In this study, the authors present a case of superficial siderosis of the central nervous system developed two decades after a traumatic lesion of the brachial plexus.(author)

  11. Thermographic Imaging of the Superficial Temperature in Racing Greyhounds before and after the Race

    OpenAIRE

    Mari Vainionpää; Esa-Pekka Tienhaara; Marja Raekallio; Jouni Junnila; Marjatta Snellman; Outi Vainio

    2012-01-01

    A total of 47 racing greyhounds were enrolled in this study on two race days (in July and September, resp.) at a racetrack. Twelve of the dogs participated in the study on both days. Thermographic images were taken before and after each race. From the images, superficial temperature points of selected sites (tendo calcaneus, musculus gastrocnemius, musculus gracilis, and musculus biceps femoris portio caudalis) were taken and used to investigate the differences in superficial temperatures bef...

  12. Repair of a canine forelimb skin deficit by microvascular transfer of a caudal superficial epigastric flap.

    Science.gov (United States)

    Lewin, G A; Smith, J H

    2010-02-01

    Extensive skin loss from the forelimb of a Border collie was repaired by a microvascular caudal superficial epigastric flap, with secondary meshing of the flap to increase coverage. The caudal superficial epigastric artery and vein were anastomosed to the brachial artery and vein. End-to-end anastomosis to the brachial artery and vein did not compromise peripheral blood flow, and no flap necrosis was observed after subsequent limited meshing of the flap. PMID:20070493

  13. Comparison of microbiological results of deep tissue biopsy and superficial swab in diabetic foot infections

    Directory of Open Access Journals (Sweden)

    Fatma Bozkurt

    2011-12-01

    Full Text Available Objectives: In this study, we aimed to compare superficial swab cultures with deep tissue biopsy cultures and also toevaluate the reliability of superficial swap cultures in diabetic foot infected patients.Materials and methods: To compare two culture methods, the hospitalized patients with diabetic foot infections wereretrospectively evaluated at Dicle University and Diyarbakir Education and Research Hospital, between October 2009and November 2010. The patients were divided two groups as with osteomyelitis (osteomyelitis group, Wagner ≥3 andwith soft tissue infections (soft tissue infection (STI group, Wagner <3. The cultures of deep tissue biopsy specimensand swab samples were collected from all patients.Results: In 75 patients with osteomyelitis, the compatibility rate in deep tissue biopsy culture with superficial swabculture was 58.7% whereas in STI group this rate was 89.1% (p<0.001. Of 41 superficial swap cultures, 33 of them (81%had the same microorganisms with the identified microorganisms in deep tissue cultures. Staphylococcus aureus was thepredominant pathogen isolated from deep tissue biopsy cultures and also from superficial swap cultures. The distributionsof microorganisms in deep tissue culture and swap cultures were similar.Conclusions: This study indicates that superficial swab culture could be valuable to identify the pathogens in infecteddiabetic wounds without osteomyelitis. The accuracy of swab specimens diminishes when osteomyelitis develops. Deeptissue culture seems more sensitive and reliable in osteomyelitis group. J Microbiol Infect Dis 2011;1(3:122-127

  14. Peroral cholangioscopy for non-invasive papillary cholangiocarcinoma with extensive superficial ductal spread

    Institute of Scientific and Technical Information of China (English)

    Toshifumi Wakai; Yoshio Shirai; Katsuyoshi Hatakeyama

    2005-01-01

    Papillary carcinoma arising from the extrahepatic bile duct often shows superficial ductal spread. We report herein the case of a patient with extensive superficial spread of non-invasive papillary cholangiocarcinoma,which was depicted with peroral cholangioscopy. A 65-year-old woman presented with the sudden-onset of severe epigastric pain. Ultrasonography revealed acute acalculous cholecystitis. Endoscopic retrograde cholangiography found small protruding lesions around the confluence of the cystic duct, suggestive of a cholangiocarcinoma. As the contour of the middle and upper bile ducts it was slightly irregular on the cholangiogram, the presence of superficial ductal spread was suspected. Peroral cholangioscopy revealed small papillary lesions around the confluence of the cystic duct and fine granular mucosal lesions in the middle and upper bile ducts and the right hepatic duct, suggesting a superficially spreading tumor. A right hepatectomy with bile duct resection was performed and no residual tumor was found. Histological examination revealed a non-invasive papillary carcinoma arising from the cystic duct with extensive superficial spread. Our experience of this case and a review of the literature suggest that a fine granular or fine papillary appearance of the ductal mucosae on cholangioscopy indicates superficial spread of papillary cholangiocarcinoma, for which peroral cholangioscopy is an efficient diagnostic option.

  15. Interaction of mobile phones with superficial passive metallic implants

    International Nuclear Information System (INIS)

    The dosimetry of exposure to radiofrequency (RF) electromagnetic (EM) fields of mobile phones is generally based on the specific absorption rate (SAR, W kg-1), which is the electromagnetic energy absorbed in the tissues per unit mass and time. In this study, numerical methods and modelling were used to estimate the effect of a passive, metallic (conducting) superficial implant on a mobile phone EM field and especially its absorption in tissues in the near field. Two basic implant models were studied: metallic pins and rings in the surface layers of the human body near the mobile phone. The aim was to find out 'the worst case scenario' with respect to energy absorption by varying different parameters such as implant location, orientation, size and adjacent tissues. Modelling and electromagnetic field calculations were carried out using commercial SEMCAD software based on the FDTD (finite difference time domain) method. The mobile phone was a 900 MHz or 1800 MHz generic phone with a quarter wave monopole antenna. A cylindrical tissue phantom models different curved sections of the human body such as limbs or a head. All the parameters studied (implant size, orientation, location, adjacent tissues and signal frequency) had a major effect on the SAR distribution and in certain cases high local EM fields arose near the implant. The SAR values increased most when the implant was on the skin and had a resonance length or diameter, i.e. about a third of the wavelength in tissues. The local peak SAR values increased even by a factor of 400-700 due to a pin or a ring. These highest values were reached in a limited volume close to the implant surface in almost all the studied cases. In contrast, without the implant the highest SAR values were generally reached on the skin surface. Mass averaged SAR1g and SAR10g values increased due to the implant even by a factor of 3 and 2, respectively. However, at typical power levels of mobile phones the enhancement is unlikely to be

  16. Radiotherapy for superficial esophageal cancer of poor risk patients

    International Nuclear Information System (INIS)

    Purpose/Objective: The reported incidence of superficial esophageal cancer (SEC) has steadily increased in Japan as result of endoscopic examination has been become common. In Japan, treatment of SEC is endoscopical mucosal resection (EMR) for mucosal cancer or esophagectomy with 3 fields lymph nodes resection for submucosal cancer. Radiotherapy is little place for the management of SEC. Because of some reasons, we treated patients with SEC by radiotherapy alternative to surgery. Purpose of this report is to evaluate efficacy of radiotherapy for SEC. Methods and Materials: Between 1989 to 1996, eighteen patients with SEC were treated with radiotherapy at our hospital. Reasons of radiotherapy that was chosen as the primary methods of treatment were refusal of surgery in one patient, poor medical condition in 4 patients and double primary cancer in 13 patients (head and neck: 11, simultaneously: 11). No patients had indication of EMR. Diagnosis was made by endoscopy and radiography. Some patients were examined with endoscopic ultrasound. Two patients (11.1%) had tumor limited to the mucosa and 16 patients (88.9%) had tumor invaded the submucosa. Seven of these tumors (38.9%) were multicentric. All patients had squamous cell carcinoma. There were 17 male patients and one female patient. The age range was 49 years to 87 years with a median of 62 years. Stage of all patients was T1N0M0 according to UICC staging system. Ten patients underwent external radiotherapy (Ex) (50 Gy - 66 Gy) alone and 8 patients did both Ex and intracavitary radiotherapy (IC) (30-60 Gy of Ex with 5-15 Gy of IC). No patients received chemotherapy. Duration of follow-up was 6 months to 96 months with a median of 30 months. Results: The overall survival rate was 55.9% in 3-year and 14% in 5-year, and the cause-specific 5-year survival rate was 100%. Causes of death were malignant tumor other than esophageal cancer in 4 patients, intercurrent disease other than malignant tumor in 3 patients and no

  17. Investigation of Endoscopic and Pathologic Features for Safe Endoscopic Treatment of Superficial Spreading Early Gastric Cancer.

    Science.gov (United States)

    Lee, Kyong Joo; Pak, Kyung Ho; Hyung, Woo Jin; Noh, Sung Hoon; Kim, Choong Bai; Lee, Yong Chan; Kim, Hee Man; Lee, Sang Kil

    2016-04-01

    Superficial spreading early gastric cancer (EGC) is a rare disease that is treated mainly by surgery. There are few studies on the safety of endoscopic treatment for patients with superficial spreading EGC. The aims of this study were to (1) investigate the risk of lymph node metastasis of superficial spreading EGC and (2) investigate the potential criteria for endoscopic treatment of superficial spreading EGC using surgical specimens.Between 2000 and 2010, patients who received curative surgery of R0 resection at Severance Hospital (Seoul, Korea) for early gastric cancer were enrolled. The superficial spreading EGC was defined as cancer in which the longest tumor length was ≥6 cm. The medical records of the patients were reviewed retrospectively.Of the 3813 patients with EGC, 140 (3.7%) had lesions ≥ 6 cm, whereas 3673 (96.3%) had lesions EGC had higher rates of submucosal cancer (59.3% vs 45.7%, P = 0.002), lymphovascular invasion (18.6% vs 9.8%, P EGC (EGC, as compared with a tumor EGC. In mucosal cancer without ulcers, tumors ≥ 6 cm had a higher rate of lymph node metastasis than tumors ≤ 2 cm; however, this trend was not significant (7.7% vs 5.3%, P = 0.455).Superficial spreading EGC was not associated with an increased risk of lymph node metastasis compared with common EGC. We suggest that differentiated intramucosal superficial spreading EGC without ulceration can be treated by endoscopic submucosal dissection. PMID:27057862

  18. Modification of porosity in the catalyst layer of membrane electrode assemblies using pore-forming agents; Modificacion de la porosidad en la capa catalitica de ensambles membrana-electrodo empleando agentes formadores de poros

    Energy Technology Data Exchange (ETDEWEB)

    Flores Hernandez, J. Roberto [Instituto de Investigaciones Electricas Cuernavaca, Morelos (Mexico)] e-mail: jrflores@iie.org.mx; Reyes, Brenda [UNAM. Facultad de Quimica, Mexico D.F. (Mexico); Barbosa P., Romeli [Centro de Investigacion en Energia, UNAM, Temixco, Morelos (Mexico); Cano Castillo, Ulises; Albarran, Lorena [Instituto de Investigaciones Electricas Cuernavaca, Morelos (Mexico)

    2009-09-15

    Membrane electrode assemblies (MEA) are the most important part of PEM fuel cells since their interface results in the electrochemical reactions that make the generation of electricity possible. The MEA is composed of a proton exchange membrane, both sides of which are impregnated with a catalyst layer, normally of carbon-supported platinum. Depending on the technique used for its fabrication (atomization, serigraphy, brush methods, chemical reduction, etc.), the properties of the MEA can be different in terms of porosity, distribution of the catalyst, thickness and structure of the catalyst layer, and the quality of the union between the catalyst layer and the membrane, etc. Currently, the porosity of the electrodes is generated by isopropanol evaporation (solvent used in the dye) during the fabrication process conducted in the Instituto de Investigaciones Electricas (IIE). This document presents the results obtained from adding a porous agent to the catalytic dye base composition used in the fabrication of MEA at the IIE. [Spanish] Los Ensambles Membrana-Electrodo (MEA's) son la parte mas importante en las celdas de combustibles tipo PEM, ya que en su interfaz se llevan a cabo las reacciones electroquimicas que hacen posible la generacion de electricidad. El MEA esta compuesto de una membrana de intercambio protonico a la cual se le impregna en ambos lados una capa catalitica normalmente de platino soportado en carbon. Dependiendo de la tecnica empleada en su fabricacion (atomizado, serigrafia, brocha, reduccion quimica, etc.), las propiedades del MEA pueden ser diferentes en cuanto a porosidad, distribucion del catalizador, grosor y estructura de la capa catalitica, asi como la calidad de la union entre la capa catalizadora y la membrana, etc. Actualmente, la porosidad de los electrodos es generada por la evaporacion del isopropanol (solvente utilizado en la tinta) durante el proceso de fabricacion que se realiza en el Instituto de Investigaciones

  19. ULNAR NERVE, ITS TERMINATION AND SUPERFICIAL BRANCHES IN HAND: A CADAVERIC STUDY

    Directory of Open Access Journals (Sweden)

    A Priyadarshini

    2015-12-01

    Full Text Available Introduction: Nerves supplying the hand are notoriously variable in their divisions and their course; do not follow any standard pattern. The palmar aspect of hand is supplied by median and ulnar nerve. The clinical importance of Guyon's canal is emphasized due to the various branching patterns of the ulnar nerve in this canal. The palmar aspect of hand is usually supplied by ulnar nerve and median nerve. Medial one and a half fingers are supplied by ulnar nerve and lateral three and a half fingers are supplied by the median nerve. The branches of ulnar nerve are notoriously variable morphologically and no standard pattern can be given regarding the course of these branches. Presence of trifurcation of ulnar nerve or communications of superficial branches to median nerve do not cause symptoms usually but becomes important during surgical and orthopaedic interventions. Material and Methods: The study was conducted on 40 hands (20 left and 20 right of preserved adult human cadavers.The roof of the Guyon's canal was opened with care not to disturb the stuctures. The ulnar nerve observed for its terminal branches, the course of its superficial branches was observed. The point of division of superficial branch into digital branches was measured from bistyloid line. The point of origin of superficial communicating branch from superficial branch or digital branch of ulnar nerve to median nerve was observed from bistyloid line. Observations: In 29 hands the ulnar nerve showed bifurcation, in 10 hands it trifurcated in the Guyon's canal and in 1 right hand of a male cadaver there was higher division of the ulnar nerve and trifurcation.The superficial branch was observed for its course and division from bistyloid line. The superficial branch gave rise to 2 digital branches in 27 hands and it gave 3 branches i.e. 2 digital branches and 1 communicating branch to medialmost digital branch of median nerve in 13 hands. The typical ramus communicans from

  20. A Novel Technique of Supra Superficial Musculoaponeurotic System Hyaluronic Acid Injection for Lower Face Lifting

    Science.gov (United States)

    Sahawatwong, Sinijchaya; Sirithanabadeekul, Punyaphat; Patanajareet, Vasiyapha; Wattanakrai, Penpun

    2016-01-01

    Background: Various methods attempting to correct sagging of the lower face focus mainly on manipulation of the superficial musculoaponeurotic System. Each technique has its own limitation. The authors propose a relatively simple, conservative method utilizing hyaluronic acid injection just above the superficial musculoaponeurotic System. Objective: To address a novel hyaluronic injection technique to lift the lower face. Methods: Details of the injection techniques are described. The Position of the hyaluronic acid injected and the effect of hyaluronic acid on the superficial musculoaponeurotic System were confirmed by ultrasonography in one of the cases. Results: Sonogram images demonstrated the location of the injected hyaluronic acid and pressure effect of hyaluronic acid on the superficial musculoaponeurotic System, confirming the ability to manipulate the superficial musculoaponeurotic System by this injection technique. The lifting result of this Single injection technique was immediately visible and maintained for at least 26 weeks. Conclusion: This is a less invasive, reproducible method that provides a sustained face lifting result. The authors propose the term “supraSMAS lift” for this novel injection technique. PMID:27047633

  1. Roles of the Fibrous Superficial Zone in the Mechanical Behavior of TMJ Condylar Cartilage.

    Science.gov (United States)

    Ruggiero, Leonardo; Zimmerman, Brandon K; Park, Miri; Han, Lin; Wang, Liyun; Burris, David L; Lu, X Lucas

    2015-11-01

    In temporomandibular joints (TMJs), the cartilage on the condylar head displays a unique ultrastructure with a dense layer of type I collagen in the superficial zone, different from hyaline cartilage in other joints. This study aims to elucidate the roles of this fibrous zone in the mechanical behaviors, particularly lubrication, of TMJ under physiological loading regimes. Mechanical tests on porcine condylar cartilage demonstrated that the superficial and middle-deep zones exhibit tension-compression nonlinearity. The tensile and compressive moduli of the superficial zone are 30.73 ± 12.97 and 0.028 ± 0.016 MPa, respectively, while those for the middle-deep zone are 2.43 ± 1.75 and 0.14 ± 0.09 MPa. A nonlinear finite element model of condylar cartilage was built to simulate sliding of a spherical probe over the articular surface. The presence of the superficial zone significantly promoted interstitial fluid pressurization (IFP) inside the loaded cartilage and reduced the friction force on the surface, compared to the case without the superficial zone. Finite element simulations showed that IFP depends on sliding speed but not normal load, which matches the experimental results. This study revealed the presence of the fibrous zone can significantly reduce the deformation of condylar cartilage under compression and the friction force on its surface during sliding. PMID:25893511

  2. A ganglion cyst at the elbow causing superficial radial nerve compression: a case report

    Directory of Open Access Journals (Sweden)

    McFarlane John

    2008-04-01

    Full Text Available Abstract Introduction We report a rare case of a ganglion cyst at the elbow causing neurological symptoms by stretching the superficial radial nerve alone. Ganglia associated with radial nerve palsy at the elbow have been reported previously involving the deep branch of the posterior interosseous nerve and the superficial radial nerve, but not the superficial radial nerve alone. Case presentation A 45-year-old woman presented with a 4-month history of a painful lump in the anterior aspect of her left elbow associated with altered sensation in the dorsoradial aspect of her left hand. There was no history of trauma or any exacerbating factors. On examination the altered sensation was in the superficial radial nerve distribution and she had a positive Tinel's sign over the site of the swelling which was located over the anterior aspect of the radiocapitellar joint. Conclusion The unique clinical symptoms and signs of our diagnosis of superficial radial nerve compression were confirmed by magnetic resonance imaging and then operative findings.

  3. Regeneración de la superficie ocular: stem cells/células madre y técnicas reconstructivas Regeneration of the ocular

    OpenAIRE

    Fernandez, A.; Moreno-Montañes, J. (Javier); Prosper, F.; Garcia, M.; Echeveste, J.I. (José I.)

    2008-01-01

    La córnea es un tejido transparente constituido microscópicamente por 5 capas bien diferenciadas. El epitelio corneal es esencial para la transparencia corneal y se encuentra en continua renovación a lo largo de la vida a partir de la población de células madre limbocorneales. La localización de estas células madre limbocorneales parece residir en las capas basales del epitelio limbocorneal, de vital importancia para mantener el microambiente de estas células madre lim...

  4. Absence of superficial palmar arch with associated anomaly of ulnar artery and nerve: a case report with clinical implications

    OpenAIRE

    Shipra Paul; Srijit Das

    2007-01-01

    Normally the ulnar artery and the ulnar nerve pass superficial to the flexor retinaculum of the wrist. In the present study, we describe an ulnar artery and ulnar nerve which passed deep to the flexor retinaculum and an absent superficial palmar arch. Abnormal course of ulnar nerve and ulnar artery passing deep to the flexor retinaculum with absence of a characteristic superficial palmar arch is a rare finding. The ulnar vessels and nerves when passing deep to the flexor retinaculum are vulne...

  5. Vulcanismo submarino del Santoniense en el Subbético: datación con nannofósiles e interpretación (formación Capas Rojas, Alamedilla, provincia de Granada

    Directory of Open Access Journals (Sweden)

    de Gea, G.

    1998-12-01

    Full Text Available Submarine volcanic rocks (pillow lavas appear into the marly limestones and marls of the Capas Rojas Formation in the Median Subbetic. The dating with nannoplankton of the immediately underlying and overlying materials to these volcanic rocks has allow us to precise the age of this volcanic activity as Late Santonian (nannofossil biozone of Rucinolithus hayi. This volcanic event arose 84 million years ago, according to the absolute age obtained with the calibration of this biozone. It is the last Mesozoic volcanic activity registered until now in the External Zones of the Betic Cordilleras. The age of this event corresponds to the ending part of the interval of the Sudiberian continental margin evolution as an extensive margin, relatively nearly to the time in which it evolved to a convergent marginRocas volcánicas submarinas (lavas almohadilladas aparecen intercaladas entre calizas margosas y margas de la Formación Capas Rojas del Subbético Medio. La datación con nannoplancton de los materiales inmediatamente infrayacentes y suprayacentes a estas rocas volcánicas ha permitido precisar la edad de este vulcanismo como Santoniense superior (biozona de nannofósiles de Rucinolithus hayi. Este evento volcánico ocurrió hace unos 84 millones de años de acuerdo con la calibración a tiempos absolutos de la biozona indicada. Se trata por tanto de la actividad volcánica mesozoica más moderna datada hasta el momento en el conjunto de las Zonas Externas de las Cordilleras Béticas. La edad de este evento corresponde a la parte terminal del intervalo de tiempo durante el cual el margen continental sudibérico constituyó un margen extensivo, relativamente cercano al momento en que ocurrió su transformación a un margen convergente.

  6. ESTUDIO ANATÓMICO DE LA RAMA SUPERFICIAL DEL NERVIO RADIAL. IMPLICACIONES QUIRÚRGICAS Superficial branch of radial nerve: an anatomical study and its surgical implications

    Directory of Open Access Journals (Sweden)

    Enrique Vergara-Amador

    2010-07-01

    Full Text Available Antecedentes. Conocer la anatomía de la rama superficial del nervio radial, es indispensable para la adecuada práctica de cirugías que involucran la mano y la muñeca. Objetivo. Determinar las relaciones del nervio radial y sus ramas con el tubérculo de Lister, la apófisis estiloides del radio y la distribución en el dorso de la mano. Material y métodos. Se disecaron 25 piezas de cadáveres frescos. Se identificó la rama superficial del nervio radial y se midió la distancia entre la salida del nervio y la apófisis estiloides del radio. Se identificaron las ramas del nervio en el antebrazo distal y en la muñeca y se midieron respecto a la apófisis estiloides y al tubérculo de Lister. Resultados. La rama superficial del nervio radial emergió en la región dorsal y radial del tercio distal del antebrazo entre el músculo braquiradialis y el extensor carpis radialis longus, a una distancia de 8,45 cm proximal a la apófisis estiloides. Su primera rama de división discurrió palmar a la apófisis estiloides radial a una distancia promedio de 0,74 cm respecto a la misma. El tronco principal se dividió en varias ramas terminales así: proximal a la apófisis estiloides del radio (28%, a nivel de la misma (12% y distal (60%. El patrón de distribución de las ramas nerviosas en la base de los dedos más frecuente fue el del primero, segundo y el lado radial del tercer dedo (56%. Discusión. Este estudio mostró la gran variabilidad de la rama superficial del nervio radial en el dorso de la mano y la alta probabilidad de daño del mismo durante los procedimientos abiertos, artroscópicos o procedimientos percutáneos en la muñeca.Background. The anatomy of the superficial branch of radial nerve is essential for the proper practice of surgery involving the hand and wrist. Objetive. Determine relationship between the superficial radial nerve and his branches with the radial styloid process level, Lister’s tubercle and the distribution of

  7. Total body superficial electron beam therapy using a dual field technique

    International Nuclear Information System (INIS)

    A technique using a dual field is presented. This technique has applications in mycosis fungoides using superficial electron-beam with 8 MeV therapy. For the multiple-field irradiation with dual field technique, a six distribution setup is used with 8 MeV electron-beam disperes around the whole body surface 1 cm in depth for treatment of mycosis fungoides. Some of the physical aspects, dosimetory, loss of build-up, depth-dose shift and increasing braking radiation (bremsstrahlung) using multiple overlapping because of high energy for superficial whole-body irradiation therapy were discussed. The 6-field technique is the methods of choice for superficial whole-body treatment. (author)

  8. Postoperative Massive Pulmonary Embolism Due to Superficial Vein Thrombosis of the Upper Limb

    Science.gov (United States)

    Cascella, Marco; Viscardi, Daniela; Bifulco, Francesca; Cuomo, Arturo

    2016-01-01

    It is well known that deep vein thrombosis of the upper extremities is linked to high morbidity/mortality, resulting in 12-20% of all documented pulmonary embolism; however, there are few data about thromboembolism originating from a vein and/or a branch of a superficial vein of the upper extremities. Pulmonary embolism secondary to upper limb superficial vein thrombosis (not combined with upper extremities deep vein thrombosis) is a very rare clinical manifestation with few cases reported in the literature. We report a rare case of thrombophlebitis in departure from a superficial branch of the cephalic vein of the right arm, complicated by cardiac arrest secondary to a massive pulmonary embolism in a patient who underwent major surgery for ovarian cancer. We discuss on the numerous thrombotic risk factors, triggering a cascade of reactions and resulting in a potential fatal clinical manifestation. PMID:26985256

  9. Superficial keratectomy and 360º conjunctival flap for bullous keratopathy in a dog: a case report

    Directory of Open Access Journals (Sweden)

    J.P.D. Ortiz

    2011-06-01

    Full Text Available A case of a two-year-old male Pinscher with a history of discomfort in the right eye was reported. The left eye had been enucleated by the referring veterinarian due to the same symptom with unsuccessful clinical treatment. The Schirmer tear test value was elevated and a decreased intraocular pressure was observed by applanation tonometry. Biomicroscopy revealed profuse corneal edema and keratoconus and fluorescein staining was negative. Gonioscopy and ophthalmoscopy did not provide any relevant data due to the corneal alterations. Bullous keratopathy was diagnosed. Surgery was performed in two steps: 1 superficial keratectomy and 360º conjunctival flap, and 2 superficial keratectomy to restore corneal transparency. Thirty days after the second superficial keratectomy, the third eyelid flap was removed. Conjunctivalization of the upper nasal quadrant of the cornea was observed. The axial portion of the cornea was transparent and vision was restored.

  10. Castelli di carta. La piega per la costruzione di superfici articolate

    Directory of Open Access Journals (Sweden)

    Andrea Casale

    2012-06-01

    Full Text Available L’antica arte del piegare la carta, l’Origami, sta vivendo un rinnovato interesse che coinvolge molti aspetti della ricerca.  Con il termine origami, si intende lo studio del modo di piegare il foglio di carta per imporgli una specifica forma.  La superficie tassellata per mezzo di specifiche pieghe, si propone come un nuovo soggetto di studio: la superficie piegata articolata. La forma congiunta al movimento, assume un particolare interesse nella contemporanea ricerca geometrica e architettonica. Il panorama contemporaneo, propone opere di architettura “responsiva”, capaci di modificare le proprie caratteristiche per adeguarsi a nuove condizioni. La superficie piegata articolata sembra particolarmente adatta a descrivere questo modo d’intendere l’architettura, reagendo a diverse volontà e di conseguenza modificando la propria conformazione attraverso un attento controllo progettuale della forma.

  11. Studio della superficie degli impianti dentali in titanio: La nanotecnologia nella valutazione delle nuove superfici implantari in rapporto all'osteointegrazione dei mascellari

    OpenAIRE

    Ricci, Emanuele

    2015-01-01

    Il presente lavoro parte dalla descrizione dei processi di rimodellamento osseo mascellare a seguito della perdita di elementi dentari e la successiva riabilitazione mediante impianto dentale osteointegrato. Approfondiremo proprio i complessi aspetti dell’osteointegrazione su superfici implantari in titanio sia a livello micro che macroscopico. Nel campo dell’implantologia, infatti, il titanio risulta essere il materiale maggiormente impiegato in virtù della sua eccellente biocompatibilità...

  12. Epidemiology of Superficial Fungal Infections in Guangdong, Southern China: A Retrospective Study from 2004 to 2014.

    Science.gov (United States)

    Cai, Wenying; Lu, Changming; Li, Xiqing; Zhang, Junmin; Zhan, Ping; Xi, Liyan; Sun, Jiufeng; Yu, Xinbing

    2016-06-01

    Superficial fungal infections are common worldwide; however, the distribution of pathogenic species varies among geographical areas and changes over time. This study aimed to determine the epidemiologic profile of superficial fungal infections during 2004-2014 in Guangzhou, Southern China. Data regarding the superficial mycoses from outpatients and inpatients in our hospital were recorded and analyzed. From the 3367 patients that were enrolled in the study, 3385 samples were collected from skin, hair and nail lesions. Of the 697 positive cultures, dermatophytes were the most prevalent isolates (84.36 %), followed by yeasts (14.92 %) and non-dermatophyte molds (0.72 %). Trichophyton rubrum (56.24 %) was the most common dermatophyte isolated from cases of tinea unguium (83.92 %), tinea pedis (71.19 %), tinea cruris (91.66 %), tinea corporis (91.81 %) and tinea manuum (65.00 %). Trichophyton mentagrophytes (13.35 %) and Microsporum canis (10.19 %) were the predominant species associated with cases of tinea faciei (54.55 %) and tinea capitis (54.13 %), respectively. Yeasts and molds were identified primarily from other cases of superficial fungal infections. In conclusion, when compared to previous studies in the same area, the epidemiology of superficial mycoses in Guangdong did not significantly change from 2004 to 2014. The prevalence of causative agents and the spectrum of superficial fungal infections, particularly tinea caused by dermatophyte infection, are similar to reports from several specific regions in China and Europe, whereas increasing incidences of Trichophyton mentagrophytes and Microsporum canis occurred in Guangdong, China. PMID:26883512

  13. Traumatic pseudoaneurysm of the superficial temporal artery: case report Pseudoaneurisma traumático da artéria temporal superficial: relato de caso

    Directory of Open Access Journals (Sweden)

    Francisco Sérgio Cavalcante Barros Leal

    2005-09-01

    Full Text Available A 26 year-old woman suffered a blunt head injury on the left temporal area and developed an arteriovenous fistula with a pseudoaneurysm on the superficial temporal artery. These fistulas are rare and usually associated with pseudoaneurysms, most commonly in the frontal arterial branch. The aneurysms generally appear late after trauma and present as a pulsatile painfully growing mass in the temporal region, associated with fremitus and bruit. The diagnosis is made by angiography and surgery is a very effective treatment.Uma mulher de 26 anos desenvolveu uma fístula arteriovenosa associada a pseudoaneurisma da artéria temporal superficial após traumatismo craniano fechado. Tais fístulas são raras e geralmente associadas a pseudoaneurismas da artéria temporal superficial, mais comumente do ramo frontal. As lesões habitualmente surgem tardiamente em relação ao traumatismo causador e se manifestam como uma massa dolorosa pulsátil na região temporal, crescente, associada à frêmito e sopro. O diagnóstico é confirmado através de arteriografia e o tratamento cirúrgico proporciona ótimos resultados.

  14. Estudio del comportamiento del ozono superficial en la base antártica de Belgrano

    OpenAIRE

    Navarro Comas, Mónica

    2015-01-01

    [ES]La presente investigación recoge un exhaustivo examen del comportamiento del ozono superficial y de los eventos significativos de disminución de ozono (ODEs) que tienen lugar en Belgrano (77º 52' S, 34º 37' O), una región poco explorada del mar de Weddell. El análisis ha sido realizado a partir de los datos de ozono en superficie y perfiles de ozono proporcionados por los ozonosondeos realizados en la base Antártica de Belgrano. En el estudio se han empleado otros datos complementarios, t...

  15. Estudio anatómico de la rama superficial del nervio radial, implicaciones quirúrgicas

    OpenAIRE

    Vergara Amador, Enrique; Nieto, José Luis

    2010-01-01

    Antecedentes. Conocer la anatomía de la rama superficial del nervio radial, es indispensable para la adecuada práctica de cirugías que involucran la mano y la muñeca. Objetivo. Determinar las relaciones del nervio radial y sus ramas con el tubérculo de Lister, la apófisis estiloides del radio y la distribución en el dorso de la mano. Material y métodos. Se disecaron 25 piezas de cadáveres frescos. Se identificó la rama superficial del nervio radial y se midió la distancia entre la sali...

  16. Superficial Ulnar Artery Associated with Anomalous Origin of the Common Interosseous and Ulnar Recurrent Arteries

    Science.gov (United States)

    Pamidi, Narendra; Nayak, Satheesha B; Jetti, Raghu; Thangarajan, Rajesh

    2016-01-01

    Occurrence of vascular variations in the upper limb is not uncommon and is well described in the medical literature. However, occurrence of superficial ulnar artery associated with unusual origin of the common interosseous and ulnar recurrent arteries is seldom reported in the literature. In the present case, we report the anomalous origin of common trunk of common interosseous, anterior and posterior ulnar recurrent arteries from the radial artery, in a male cadaver. Further, ulnar artery had presented superficial course. Knowledge of anomalous arterial pattern in the cubital fossa reported here is clinically important during the angiographic procedures and plastic surgeries. PMID:27437201

  17. Superficial composition in binary solid solutions A(B): Drastic effect of pure element surface tensions

    Science.gov (United States)

    Rolland, A.; Aufray, B.

    1985-10-01

    This paper deals with a comparative study of surface segragation of Pb and Ni respectively from Ag(Pb)(111) and Ag(Ni)(111) solid solutions. A high level of segregation of the solute is observed for both systems characterized by very low solute solubility. However, the superficial composition strongly depends on the relative surface tensions of the pure elements: the solute atoms are strictly on superficial sites when γ solute is smaller than γ solvent; in contrast uppermost layer consists purely of solvent when γ solute is greater than γ solvent. Two schematic distributions in close proximity to the surface are proposed in the last case.

  18. Influence on corrosion resistance of superficial strain hardening of parts made of austenitic stainless steels

    International Nuclear Information System (INIS)

    Reactivity of strain hardened stainless steel 18-10 and 18-10 Mo in oxidizing media is very different at the surface and in the metal core. Surface corrosion or protection is very sensitive to superficial strain hardening resulting of mechanical treatments. Three physical phenomena are directly strain hardening dependent and have important consequences on corrosion resistance: 1) increase of diffusion rate of the different alloy elements, especially chromium; 2) residual superficial strain influence on stress corrosion and 3) structural transformation of metastable austenite

  19. A Clinical Study of Photodynamic Therapy for Superficial Esophageal Carcinoma by YAG-OPO Laser

    OpenAIRE

    Kazunari Yoshida; Shigeru Suzuki; Seishiro Mimura; Hiroyuki Narahara; Hiroshi Tanimura; Yugo Nagai; Kaichi Isono; Teruo Kozu; Hisayuki Fukutomi; Akira Nakahara; Hiromasa Kashimura; Toshio Hirashima; Yoko Murata; Hiroko Ide; Harubumi Kato

    1998-01-01

    A cooperative clinical study of photodynamic therapy (PDT) for superficial esophageal carcinoma was conducted at 6 medical institution. PHE (2mg/kg) with high tumor affinity was used as the oncotropic compound. The light source was a pulse wave YAG-OPO laser with high penetration into the tissue. Irradiation was performed at an energy density of 60–180 J/cm2 48–72 h after PHE administration. Eight lesions in 6 patients were treated. All were type 0-II superficial carcinomas. The depth of inva...

  20. A prototype of a flexible grid electrode to treat widespread superficial tumors by means of Electrochemotherapy

    Directory of Open Access Journals (Sweden)

    Campana Luca G.

    2016-03-01

    Full Text Available In recent years, superficial chest wall recurrence from breast cancer can be effectively treated by means of electrochemotherapy, with the majority of patients achieving response to treatment. Nevertheless, tumor spread along superficial lymphatic vessels makes this peculiar type of tumor recurrence prone to involve large skin areas and difficult to treat. In these cases, electroporation with standard, small size needle electrodes can be time-consuming and produce an inhomogeneous coverage of the target area, ultimately resulting in patient under treatment.

  1. On the annual cycle of the sea surface temperature and the mixed layer depth in the Gulf of Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Mendoza, V.M.; Villanueva, E.E.; Adem, J. [Centro de Ciencias de la Atmosfera, Universidad Nacional Autonoma de Mexico, UNAM, Mexico, D.F. (Mexico)

    2005-04-01

    Mexico. El modelo se basa en las ecuaciones de conservacion de energia termica y mecanica, esta ultima derivada de la teoria de Graus Turner, ambas ecuaciones estan acopladas de integradas verticalmente en la capa de mezcla. Las ecuaciones del modelo se resuelven en una malla regular de 25 km en el Golfo de Mexico, la region noroeste del Mar Caribe y la costa este de Florida. La velocidad de la corriente oceanica superficial y las variables atmosfericas son prescritas en el modelo usando valores observados. Mostramos la importancia que tiene el bombeo de Ekman en la velocidad de penetracion turbulenta. Encontramos que la surgencia tiene un papel importante en incrementar la penetracion turbulenta produciendo un enfriamiento del agua superficial y una disminucion en la profanidad de la capa de mezcla en la Bahia de Campeche. En el resto del Golfo el hundimiento tiende a reducir la penetracion turbulenta y a incrementar la temperatura de la superficie y la profundidad de la capa de mezcla. Una comparacion del ciclo anual de la SST y de la MLD calculados con el modelo muestra concordancia con las correspondientes observaciones reportadas por Robinson (1973). En la region profunda del Golfo de Mexico, los datos de concentracion de pigmentos fotosinteticos, obtenidos de analisis ambientales, muestran en enero, abril, mayo, junio y septiembre correlacion significativa con el ciclo anual de la velocidad de penetracion vertical turbulenta calculada.

  2. Subintimal angioplasty for the treatment of long segment occlusion of superficial femoral artery: the midterm results

    International Nuclear Information System (INIS)

    Objective: To discuss the clinical value of subintimal angioplasty in treating long segment occlusion of superficial femoral artery and to observe its midterm results. Methods: Subintimal angioplasty was performed in 45 patients with long segment occlusion of superficial femoral artery, whose clinical presentation was intermittent claudication or critical limb ischemia. The primary patency, limb salvage and factors influencing long-term patency were observed, and the clinical data were analyzed. Results: Of the total 45 cases, the subintimal angioplasty was successfully accomplished in 43. The success rate of antegrade approach technique via the superficial femoral artery was 80% (n=36), the occlusion was recanalized by using retrograde approach technique via ipsilateral popliteal artery in 7 case. The total technical success rate was 95.6%. The primary patency in 43 successful cases at 6, 12, 24 and 36 months was 85.7%, 69.0% 57.3% and 50.9%, respectively. No statistically significant difference in primary patency existed between the group of intermittent claudication and the group of critical limb ischemia (P>0.05). Statistically significant prediction factors for primary patency included the number of the run off vessels below the knee and the length of the occlusion (P<0.05). Conclusion: Subintimal angioplasty is an effective procedure for the treatment of long segment occlusions of superficial femoral artery with satisfactory mid-term results. (authors)

  3. Thrombophlebitis of the penile superficial vein, penile mondor's disease: a case report

    Energy Technology Data Exchange (ETDEWEB)

    Park, Sang Hyun; Kim, Young Hwa; Kim, Doo Sang; Shin, Hyung Chul; Bae, Won Kyung; Kim, Il Young [Soonchunhyang University, Chunan (Korea, Republic of); Kim, Hyun Cheol [Kyung-Hee University, Seoul (Korea, Republic of)

    2007-07-15

    Mondor's disease is commonly known as thrombophlebitis of the superficial vein in the breast, and this disease occurs rarely in the penis. Despite extensive information about the clinical presentation and course of this disease, imaging findings for this disease are limited. We report gray scale and power Doppler sonographic findings of penile Mondor's disease.

  4. Química superficial de los materiales de carbón

    Directory of Open Access Journals (Sweden)

    F.J. Maldonado-Hódar

    2011-06-01

    Full Text Available La superficie del carbón no puede ser analizada de forma particularizada, sino como un promedio, dado por un lado la existencia simultánea de funciones distintas y por otro, que las características de dichas funciones dependen a su vez del entorno en que se encuentran.

  5. Healing process study in murine skin superficial wounds treated with the blue LED photocoagulator EMOLED

    Science.gov (United States)

    Rossi, Francesca; Cicchi, Riccardo; Tatini, Francesca; Bacci, Stefano; Alfieri, Domenico; De Siena, Gaetano; Pavone, Francesco S.; Pini, Roberto

    2015-07-01

    A faster healing process was observed in superficial skin wounds after irradiation with the EMOLED photocoagulator. The instrument consists of a compact handheld photocoagulation device, useful for inducing coagulation in superficial abrasions. In this work we present the results of an in vivo study, in a murine model. Two superficial wounds were produced on the back of 12 mice: one area was left untreated, the other one was treated with EMOLED. Healthy skin was used as a control. The animals were sacrificed 3 hours, 12 hours, 1 day, 6 day after treatment. The treatment effects on back skin was monitored by visual observations, histopathological analysis, immuno-histochemical analysis, and nonlinear microscopic imaging performed at each follow up time, finding no adverse reactions and no thermal damage in both treated areas and surrounding tissues. In addition, a faster healing process, a reduced inflammatory response, a higher collagen content, and a better-recovered skin morphology was evidenced in the treated tissue with respect to the untreated tissue. These morphological features were characterized by means of immuno-histochemical analysis, aimed at imaging fibroblasts and myofibroblasts, and by SHG microscopy, aimed at characterizing collagen organization, demonstrating a fully recovered aspect of dermis as well as a faster neocollagenesis in the treated regions. This study demonstrates that the selective photothermal effect we used for inducing immediate coagulation in superficial wounds is associated to a minimal inflammatory response, which provides reduced recovery times and improved healing process.

  6. Recent advances in high-throughput molecular marker identification for superficial and invasive bladder cancers

    DEFF Research Database (Denmark)

    Andersen, Lars Dyrskjøt; Zieger, Karsten; Ørntoft, Torben Falck

    2007-01-01

    individually contributed to the management of the disease. However, the development of high-throughput techniques for simultaneous assessment of a large number of markers has allowed classification of tumors into clinically relevant molecular subgroups beyond those possible by pathological classification. Here......, we review the recent advances in high-throughput molecular marker identification for superficial and invasive bladder cancers....

  7. Can Young Children Distinguish Abstract Expressionist Art from Superficially Similar Works by Preschoolers and Animals?

    Science.gov (United States)

    Nissel, Jenny; Hawley-Dolan, Angelina; Winner, Ellen

    2016-01-01

    While it is sometimes claimed that abstract art requires little skill and is indistinguishable from the scribbles of young children, recent research has shown that even adults with no training in art can distinguish works by abstract expressionists from superficially similar works by children and even elephants, monkeys, and apes (Hawley-Dolan…

  8. On steel superficial hardening by concentrated electron beam in the air

    International Nuclear Information System (INIS)

    Possibilities of steel superficial hardening by a concentrated electron beam are studied. Experiments have been conducted since 1985 using the EhLV-6 accelerator with concentrated emission of the beam into atmosphere. Regimes ensuring the hardening and certain characteristic properties of the hardened layer are described

  9. Effect of superficial oxides on corrosion of steel reinforcement embedded in concrete

    Energy Technology Data Exchange (ETDEWEB)

    Avila-Mendoza, J. (Univ. Autonoma de Campeche (Mexico). Programa de Corrosion del Golfo de Mexico); Flores, J.M. (Inst. Mexicano del Petroleo, Mexico City (Mexico)); Castillo, U.C.

    1994-11-01

    The effect of superficial coverage with different iron oxides on the general corrosion resistance of steel embedded in concrete was investigated. Electrochemical corrosion rate and potential measurements were made of rebars that had a bare surface (polished), an atmospherically rusted (hematite [Fe[sub 2]O[sub 3

  10. Effect of exposing pupae of flesh fly Parasarcophaga ruficornis F. to superficial X-rays

    International Nuclear Information System (INIS)

    Irradiation of pupae of Parasarcophaga ruficornis with different doses of superficial X-rays leads to lethality and interference with moulting and metamorphosis. Younger pupae are more radiosensitive in respect of lethality and metamorphosis to older ones. (author). 12 ref., 9 figs., 1 tab

  11. Estudio superficie : Palau de les Arts Reina Sofía

    OpenAIRE

    ORTIZ BOTO, YOLANDA

    2011-01-01

    La superficie escogida es la cubierta del PALAU DE LES ARTS. Se trata de una gran "pluma" metálica soportada mediante dos apoyos, uno extremo en su zona oeste, realizado con hormigón, y otro intermedio, que apoya diectamente sobre el edificio, quedando la zona este de la cubierta totalmente en voladizo

  12. Superficial violation of the Pauli principle due to the possible substructure of electrons

    International Nuclear Information System (INIS)

    Superficial violation of the Pauli principle due to the possible substructure of electrons is discussed in composite models of quarks and leptons. The ratio of the Pauli forbidden atomic transition to the allowed one is estimated to be of order 10-50--10-44 for heavy atoms if the size of the electron is of order 10-17 cm

  13. Gráficas de superficies cuádricas y trazas empleando GeoGebra

    OpenAIRE

    Solís, Ángel

    2016-01-01

    En este artículo se pretende mostrar de una manera gráfica y dinámica, las diferentes trazas que se pueden realizar sobre una superficie cuádrica, cuando ésta es intersecada por un plano paralelo a alguno de los planos coordenados y su implementación en el programa GeoGebra.

  14. Fondaparinux for the Treatment of Superficial-Vein Thrombosis in the Legs

    NARCIS (Netherlands)

    Decousus, Herve; Prandoni, Paolo; Mismetti, Patrick; Bauersachs, Rupert M.; Boda, Zoltan; Brenner, Benjamin; Laporte, Silvy; Matyas, Lajos; Middeldorp, Saskia; Sokurenko, German; Leizorovicz, Alain

    2010-01-01

    BACKGROUND The efficacy and safety of anticoagulant treatment for patients with acute, symptomatic superficial-vein thrombosis in the legs, but without concomitant deep-vein thrombosis or symptomatic pulmonary embolism at presentation, have not been established. METHODS In a randomized, double-blind

  15. Revealing Maximal Diameter of Upper Limb Superficial Vein with an Elevated Environmental Temperature.

    Science.gov (United States)

    Irfan, Hira; Ooi, Guo Shen; Kyin, May M; Ho, Pei

    2016-01-01

    Ultrasonography is the primary tool for preoperative analysis of vein morphology for fistula creation in patients with end-stage renal disease. This study examines the effect of environmental temperature on the superficial vein size. Superficial veins of thirteen healthy volunteers were marked at three sites: cephalic vein in left lateral arm near cubital fossa, cephalic vein in left forearm at wrist, and basilic vein in left medial arm near cubital fossa. Mean diameters were recorded using ultrasound probe at 26°C and 43°C. Body temperature was increased using a Bair Hugger blanket. Mean values from the two temperatures were analyzed using paired sample t-test. All three superficial vein sites displayed statistically significant increase in diameter when the temperature was increased from 26°C to 43°C. Paired t-test showed p values of 0.001 for cephalic vein at wrist, 0.01 for cephalic vein near cubital fossa, and 0.01 for basilic vein near cubital fossa. This study proved that environmental temperature exerts a statistically significant effect on vein size measured by ultrasound during preoperative assessment for vascular access. Not to the extent of 43°C, the authors would recommend setting the room temperature higher during ultrasound vascular assessment to avoid underestimating the superficial vein size. PMID:27597987

  16. Percutaneous transluminal angioplasty of the superficial femoral artery by retrograde catheterization via the popliteal artery

    DEFF Research Database (Denmark)

    Tønnesen, K H; Sager, P; Karle, A; Henriksen, L; Jørgensen, B

    1988-01-01

    We report the results of 50 angioplasty procedures via the popliteal artery. A 3-year follow-up including control of blood pressures at ankle and toe levels show results comparable to reports in the literature. This new approach for angioplasty of the superficial femoral artery and eventually of ...

  17. A prodrug approach to the use of coumarins as potential therapeutics for superficial mycoses.

    Directory of Open Access Journals (Sweden)

    Derry K Mercer

    Full Text Available Superficial mycoses are fungal infections of the outer layers of the skin, hair and nails that affect 20-25% of the world's population, with increasing incidence. Treatment of superficial mycoses, predominantly caused by dermatophytes, is by topical and/or oral regimens. New therapeutic options with improved efficacy and/or safety profiles are desirable. There is renewed interest in natural product-based antimicrobials as alternatives to conventional treatments, including the treatment of superficial mycoses. We investigated the potential of coumarins as dermatophyte-specific antifungal agents and describe for the first time their potential utility as topical antifungals for superficial mycoses using a prodrug approach. Here we demonstrate that an inactive coumarin glycone, esculin, is hydrolysed to the antifungal coumarin aglycone, esculetin by dermatophytes. Esculin is hydrolysed to esculetin β-glucosidases. We demonstrate that β-glucosidases are produced by dermatophytes as well as members of the dermal microbiota, and that this activity is sufficient to hydrolyse esculin to esculetin with concomitant antifungal activity. A β-glucosidase inhibitor (conduritol B epoxide, inhibited antifungal activity by preventing esculin hydrolysis. Esculin demonstrates good aqueous solubility (<6 g/l and could be readily formulated and delivered topically as an inactive prodrug in a water-based gel or cream. This work demonstrates proof-of-principle for a therapeutic application of glycosylated coumarins as inactive prodrugs that could be converted to an active antifungal in situ. It is anticipated that this approach will be applicable to other coumarin glycones.

  18. Mr Marty's muddle: a superficial and selective case for euthanasia in Europe

    Science.gov (United States)

    Keown, J

    2006-01-01

    In April 2004 the Parliamentary Assembly of the Council of Europe debated a report from its Social, Health and Family Affairs Committee (the Marty Report), which questioned the Council of Europe's opposition to legalising euthanasia. This article exposes the Report's flaws, not least its superficiality and selectivity. PMID:16373521

  19. Pentoxifylline and vitamin E combination for superficial radiation-induced fibrosis: A phase II clinical trial

    International Nuclear Information System (INIS)

    We treated 34 radiation-induced superficial fibrotic lesions with pentoxifylline and vitamin E for 3 months. Mean surface area of the lesions decreased from 112 to 65 cm2 after treatment (P2 (P<0.001). Pentoxifylline-vitamin E combination improved radiation-induced fibrosis

  20. Superficial Layer-Specific Histaminergic Modulation of Medial Entorhinal Cortex Required for Spatial Learning.

    Science.gov (United States)

    He, Chao; Luo, Fenlan; Chen, Xingshu; Chen, Fang; Li, Chao; Ren, Shuancheng; Qiao, Qicheng; Zhang, Jun; de Lecea, Luis; Gao, Dong; Hu, Zhian

    2016-04-01

    The medial entorhinal cortex (MEC) plays a crucial role in spatial learning and memory. Whereas the MEC receives a dense histaminergic innervation from the tuberomamillary nucleus of the hypothalamus, the functions of histamine in this brain region remain unclear. Here, we show that histamine acts via H1Rs to directly depolarize the principal neurons in the superficial, but not deep, layers of the MEC when recording at somata. Moreover, histamine decreases the spontaneous GABA, but not glutamate, release onto principal neurons in the superficial layers by acting at presynaptic H3Rs without effect on synaptic release in the deep layers. Histamine-induced depolarization is mediated via inhibition of Kir channels and requires the activation of protein kinase C, whereas the inhibition of spontaneous GABA release by histamine depends on voltage-gated Ca(2+) channels and extracellular Ca(2+). Furthermore, microinjection of the H1R or H3R, but not H2R, antagonist respectively into the superficial, but not deep, layers of MEC impairs rat spatial learning as assessed by water maze tasks but does not affect the motor function and exploratory activity in an open field. Together, our study indicates that histamine plays an essential role in spatial learning by selectively regulating neuronal excitability and synaptic transmission in the superficial layers of the MEC. PMID:25595181

  1. The defence architecture of the superficial cells of the oral mucosa

    NARCIS (Netherlands)

    P. Asikainen; T.J. Ruotsalainen; J.J.W. Mikkonen; A. Koistinen; C. ten Bruggenkate; A.M. Kullaa

    2012-01-01

    The oral epithelium together with the saliva and its components forms a complex structure which is the first line of defence in the oral cavity. The surface of superficial cells of the oral epithelium contains ridge-like folds, microplicae (MPL), which are typical of the surfaces of areas covered wi

  2. Anatomic Variations of the Superficial Middle Cerebral Vein: Embryologic Aspects of the Regressed Embryonic Tentorial Sinus

    OpenAIRE

    Chung, J.I.; Weon, Y.C.

    2005-01-01

    The embryonic tentorial sinus usually regressses during postnatal development, but its typical prenatal drainage patterns and intradural anastomoses can be depicted as various developmental phenotypic representations. Here, we tried to clarify the variant types of the superficial middle cerebral vein (SMCV) associated with the embryonic tentorial sinus.

  3. Use of superficial peroneal nerve graft for treating peripheral nerve injuries

    Directory of Open Access Journals (Sweden)

    Samuel Ribak

    2016-02-01

    Full Text Available ABSTRACT OBJECTIVE: To evaluate the clinical results from treating chronic peripheral nerve injuries using the superficial peroneal nerve as a graft donor source. METHODS: This was a study on eleven patients with peripheral nerve injuries in the upper limbs that were treated with grafts from the sensitive branch of the superficial peroneal nerve. The mean time interval between the dates of the injury and surgery was 93 days. The ulnar nerve was injured in eight cases and the median nerve in six. There were three cases of injury to both nerves. In the surgery, a longitudinal incision was made on the anterolateral face of the ankle, thus viewing the superficial peroneal nerve, which was located anteriorly to the extensor digitorum longus muscle. Proximally, the deep fascia between the extensor digitorum longus and the peroneal longus muscles was dissected. Next, the motor branch of the short peroneal muscle (one of the branches of the superficial peroneal nerve was identified. The proximal limit of the sensitive branch was found at this point. RESULTS: The average space between the nerve stumps was 3.8 cm. The average length of the grafts was 16.44 cm. The number of segments used was two to four cables. In evaluating the recovery of sensitivity, 27.2% evolved to S2+, 54.5% to S3 and 18.1% to S3+. Regarding motor recovery, 72.7% presented grade 4 and 27.2% grade 3. There was no motor deficit in the donor area. A sensitive deficit in the lateral dorsal region of the ankle and the dorsal region of the foot was observed. None of the patients presented complaints in relation to walking. CONCLUSIONS: Use of the superficial peroneal nerve as a graft source for treating peripheral nerve injuries is safe and provides good clinical results similar to those from other nerve graft sources.

  4. Use of superficial peroneal nerve graft for treating peripheral nerve injuries☆

    Science.gov (United States)

    Ribak, Samuel; da Silva Filho, Paulo Roberto Ferreira; Tietzmann, Alexandre; Hirata, Helton Hiroshi; de Mattos, Carlos Augusto; da Gama, Sérgio Augusto Machado

    2016-01-01

    Objective To evaluate the clinical results from treating chronic peripheral nerve injuries using the superficial peroneal nerve as a graft donor source. Methods This was a study on eleven patients with peripheral nerve injuries in the upper limbs that were treated with grafts from the sensitive branch of the superficial peroneal nerve. The mean time interval between the dates of the injury and surgery was 93 days. The ulnar nerve was injured in eight cases and the median nerve in six. There were three cases of injury to both nerves. In the surgery, a longitudinal incision was made on the anterolateral face of the ankle, thus viewing the superficial peroneal nerve, which was located anteriorly to the extensor digitorum longus muscle. Proximally, the deep fascia between the extensor digitorum longus and the peroneal longus muscles was dissected. Next, the motor branch of the short peroneal muscle (one of the branches of the superficial peroneal nerve) was identified. The proximal limit of the sensitive branch was found at this point. Results The average space between the nerve stumps was 3.8 cm. The average length of the grafts was 16.44 cm. The number of segments used was two to four cables. In evaluating the recovery of sensitivity, 27.2% evolved to S2+, 54.5% to S3 and 18.1% to S3+. Regarding motor recovery, 72.7% presented grade 4 and 27.2% grade 3. There was no motor deficit in the donor area. A sensitive deficit in the lateral dorsal region of the ankle and the dorsal region of the foot was observed. None of the patients presented complaints in relation to walking. Conclusions Use of the superficial peroneal nerve as a graft source for treating peripheral nerve injuries is safe and provides good clinical results similar to those from other nerve graft sources. PMID:26962502

  5. Piel artificial : metamorfosis arquitectónica del cuerpo a través de la superficie

    OpenAIRE

    Alcoceba López-Araquistain, Brezo

    2015-01-01

    El cuerpo, como conjunto organizado de partes que configuran el organismo, es una entidad metamórfica. El ser humano procura dar continuidad a esta condición mutante que le caracteriza, mediante diversas acciones de carácter arquitectónico. A partir de la observación de los procesos naturales, el individuo se autodefine artificialmente, transformando su realidad innata en una versión distorsionada de sí misma. Por adición, sustracción o modificación, la piel como última capa natural, se convi...

  6. Vulnerability of the Superficial Zone of Immature Articular Cartilage to Compressive Injury

    Energy Technology Data Exchange (ETDEWEB)

    Rolauffs, R.; Muehleman, C; Li, J; Kurz, B; Kuettner, K; Frank, E; Grodzinsky, A

    2010-01-01

    The zonal composition and functioning of adult articular cartilage causes depth-dependent responses to compressive injury. In immature cartilage, shear and compressive moduli as well as collagen and sulfated glycosaminoglycan (sGAG) content also vary with depth. However, there is little understanding of the depth-dependent damage caused by injury. Since injury to immature knee joints most often causes articular cartilage lesions, this study was undertaken to characterize the zonal dependence of biomechanical, biochemical, and matrix-associated changes caused by compressive injury. Disks from the superficial and deeper zones of bovine calves were biomechanically characterized. Injury to the disks was achieved by applying a final strain of 50% compression at 100%/second, followed by biomechanical recharacterization. Tissue compaction upon injury as well as sGAG density, sGAG loss, and biosynthesis were measured. Collagen fiber orientation and matrix damage were assessed using histology, diffraction-enhanced x-ray imaging, and texture analysis. Injured superficial zone disks showed surface disruption, tissue compaction by 20.3 {+-} 4.3% (mean {+-} SEM), and immediate biomechanical impairment that was revealed by a mean {+-} SEM decrease in dynamic stiffness to 7.1 {+-} 3.3% of the value before injury and equilibrium moduli that were below the level of detection. Tissue areas that appeared intact on histology showed clear textural alterations. Injured deeper zone disks showed collagen crimping but remained undamaged and biomechanically intact. Superficial zone disks did not lose sGAG immediately after injury, but lost 17.8 {+-} 1.4% of sGAG after 48 hours; deeper zone disks lost only 2.8 {+-} 0.3% of sGAG content. Biomechanical impairment was associated primarily with structural damage. The soft superficial zone of immature cartilage is vulnerable to compressive injury, causing superficial matrix disruption, extensive compaction, and textural alteration, which results

  7. Análisis perfilométrico de algunas cerámicas de uso dental bajo diversos tratamientos de su superficie

    OpenAIRE

    Salsench Cabré, Juan; Samsó Manzanedo, Jorge; Peraire Ardèvol, Maria; Anglada Cantarell, José María

    1993-01-01

    Se estudian las diferentes superficies de dos cerámicas dentales usadas en restauraciones ceramo-metálicas. Para ello se emplearon Vita VMK-68® e IPS classic. Se estudió la perfilometría de las superficies en bizcocho, glaseado intrínseco, extrínseco y pulido. Se observa que la superficie glaseada por método extrínseco es la que ofrece la superficie más suave.

  8. SUPERFICIAL AND CUTANEOUS MYCOSES AT NURSERIES AND SCHOOLS OF MAHALLAT CITY, CENTRAL PART OF IRAN

    Directory of Open Access Journals (Sweden)

    P. Kordbacheh

    1994-06-01

    Full Text Available This study was conducted for detection of common superficial and cutaneous mycoses in nurseries and schools of Mahallat during September 1989 to June 1990. A Total of 9884 individuals (under 18 years of age were both clinically observed and tested by laboratory. 5.6% were positive to mycotic infections and from those the rate of infection for pityrosporosis, tinea versicolor and dermatophytosis were 42.7%, 12.6% and 1.8% respectively. Trichomycosis axillaries and erythrasma (although their etiologic agents are bacteria were diagnosed with a rate of 42.4% and 0.5% respectively. Superficial mycoses were most common in 12-18 age groups and dermatophytosis was most common in 6-9 age groups.

  9. SUPERFICIAL ANGIOMYXOMA OF THE NECK WITHOUT ASSOCIATED CARNEY’S COMPLEX: A RARE CASE REPORT

    Directory of Open Access Journals (Sweden)

    Suiyibangbe

    2015-05-01

    Full Text Available Superficial angiomyxomas are rare benign soft tissue tumour usually solitary and predominantly involving the dermis and subcutis. We report a case of 21 year s old male who presented with a history of swelling on the left upper anterolateral aspect of neck, measuring 3x2cm with irregular surface, non - tender, mobile and firm in consistency, fixed to the skin but not to the underlying structured. No lymph node was palpable. There was no evidence of any of the components of Carney’s complex at the time of presentation. Provisional diagnosis was made as Pleomorphic adenoma by FNAC. Wide local surgical excision was done. Histopathology examination revealed to be super ficial angiomyxoma. Here, we present a case of superficial angiomyxoma with a review to its rarity and difficulty in diagnosing and distinguishing from other soft tissue tumour of the skin.

  10. Multiple schwannomas of the digital nerves and superficial radial nerve: two unusual cases of segmental schwannomatosis.

    Science.gov (United States)

    Gosk, Jerzy; Gutkowska, Olga; Kuliński, Sebastian; Urban, Maciej; Hałoń, Agnieszka

    2015-01-01

    Two cases of segmental sporadic schwannomatosis characterized by unusual location of multiple schwannomas in digital nerves (case 1) and the superficial radial nerve (case 2) are described in this paper. In the first of the described cases, 6 tumours located at the base of the middle finger and in its distal portion were excised from both digital nerves. In the second case, 3 tumours located in the proximal 1/3 and halfway down the forearm were removed from the superficial radial nerve. In both cases, symptoms such as palpable tumour mass, pain, paraesthesias, and positive Tinel-Hoffman sign resolved after operative treatment. Final diagnoses were made based on histopathological examination results. In the second of the described cases, the largest of the excised lesions had features enabling diagnosis of a rare tumour type - ancient schwannoma. PMID:26216119

  11. CrawNet: Crawler de Recursos Multimedia para la Web Superficial y Oculta

    OpenAIRE

    Alicia Martínez-Rebollar; Fernando Pech-May; Hugo Estrada-Esquivel; Eduardo Pedroza-Landa

    2014-01-01

    La web es la fuente de información de mayor uso en el ámbito académico, científico e industrial. Su crecimiento explosivo ha generado billones de páginas con información, las cuales se categorizan como web superficial, integrada por páginas estáticas que pueden ser indexadas; y web oculta, accesibles a través de formularios de búsqueda. En este artículo, se presenta el desarrollo de un crawler que permite realizar búsquedas, consultas y análisis de información en la web superficial y oculta e...

  12. Effect of superficial velocity on vaporization pressure drop with propane in horizontal circular tube

    Science.gov (United States)

    Novianto, S.; Pamitran, A. S.; Nasruddin, Alhamid, M. I.

    2016-06-01

    Due to its friendly effect on the environment, natural refrigerants could be the best alternative refrigerant to replace conventional refrigerants. The present study was devoted to the effect of superficial velocity on vaporization pressure drop with propane in a horizontal circular tube with an inner diameter of 7.6 mm. The experiments were conditioned with 4 to 10 °C for saturation temperature, 9 to 20 kW/m2 for heat flux, and 250 to 380 kg/m2s for mass flux. It is shown here that increased heat flux may result in increasing vapor superficial velocity, and then increasing pressure drop. The present experimental results were evaluated with some existing correlations of pressure drop. The best prediction was evaluated by Lockhart-Martinelli (1949) with MARD 25.7%. In order to observe the experimental flow pattern, the present results were also mapped on the Wang flow pattern map.

  13. Efficacy and safety of butenafine in superficial dermatophytoses (tinea pedis, tinea cruris, tinea corporis).

    Science.gov (United States)

    Saple, D G; Amar, A K; Ravichandran, G; Korde, K M; Desai, A

    2001-05-01

    Superficial dermatophytoses of skin are very common infections seen in clinical practice. Besides topical imidazoles, triazoles and allylamines, topical butenafine (a benzylamine derivative) is a novel agent with broad antifungal activity. One hundred and eleven patients with tinea infections were enrolled in this multicentric, randomised, single-blind non-comparative study, which involved application of butenafine (1%) cream in tinea pedis (4 weeks) and tinea cruris and tinea corporis (2 weeks) cases. The results showed that butenafine causes rapid resolution of signs and symptoms (erythema itching, burning, crusting, scaling, etc), with good patient and physician acceptability of treatment. The broader spectrum fungicidal activity and better drug retention in superficial skin layers may be responsible for this beneficial effect. PMID:11676116

  14. Laser vaporization in treatment of superficial endometriosis of the uterine cervix

    Science.gov (United States)

    Wozniak, Jakub; Wilczak, Maciej; Opala, Tomasz; Pisarska-Krawczyk, Magdalena; Cwojdzinski, Marek; Pisarski, Tadeusz

    1996-03-01

    The study shows the treatment of superficial endometriosis of the uterine cervix in 79 patients. After first vaporization 74 patients were cured successfully. In two cases the laser procedure should be repeated and in 3 women the operation should be performed for the third time. All patients are still under control in our department and there is no recurrence observed. Carbon- dioxide laser vaporization under colposcopic control is an efficient method of treatment of superficial endometriosis of the uterine cervix that requires no anaesthesia. The healing process after laser procedures is fast and without complications. The number of recurrences is low. Use of carbon-dioxide laser under colposcopic control because of precise destruction of lesions, fast healing and a low number of recurrences seems to be the method of choice.

  15. Superficial dosimetry imaging of Čerenkov emission in electron beam radiotherapy of phantoms

    Science.gov (United States)

    Zhang, Rongxiao; Fox, Colleen J.; Glaser, Adam K.; Gladstone, David J.; Pogue, Brian W.

    2013-08-01

    Čerenkov emission is generated from ionizing radiation in tissue above 264 keV energy. This study presents the first examination of this optical emission as a surrogate for the absorbed superficial dose. Čerenkov emission was imaged from the surface of flat tissue phantoms irradiated with electrons, using a range of field sizes from 6 cm × 6 cm to 20 cm × 20 cm, incident angles from 0° to 50°, and energies from 6 to 18 MeV. The Čerenkov images were compared with the estimated superficial dose in phantoms from direct diode measurements, as well as calculations by Monte Carlo and the treatment planning system. Intensity images showed outstanding linear agreement (R2 = 0.97) with reference data of the known dose for energies from 6 to 18 MeV. When orthogonal delivery was carried out, the in-plane and cross-plane dose distribution comparisons indicated very little difference (±2-4% differences) between the different methods of estimation as compared to Čerenkov light imaging. For an incident angle 50°, the Čerenkov images and Monte Carlo simulation show excellent agreement with the diode data, but the treatment planning system had a larger error (OPT = ±1˜2%, diode = ±2˜3%, TPS = ±6-8% differences) as would be expected. The sampling depth of superficial dosimetry based on Čerenkov radiation has been simulated in a layered skin model, showing the potential of sampling depth tuning by spectral filtering. Taken together, these measurements and simulations indicate that Čerenkov emission imaging might provide a valuable method of superficial dosimetry imaging from incident radiotherapy beams of electrons.

  16. Epidemiology, diagnosis and management of superficial mycoses: ours three years retrospective analysis

    OpenAIRE

    Barbara Pieretti; Marco Moretti; Maria Rita Sadori; Daniela Sbrozzi; Annamaria Masucci; Lucia Finaurini; Simonetta Gasperoni

    2013-01-01

    Mycotic infections of the skin, hair and nails are disorder with high prevalence. Dermatophytes are the most frequently etiologic agents followed by yeasts and non-dermatophyte moulds. The geographic distribution is variable because of migration, lifestyle and socio-economics conditions. In this study, based on ours three years retrospective data analysis, we evaluate the epidemiology of etiologic agents, diagnosis and management of superficial mycoses. Our data and our experience suggest the...

  17. Non- dermatophytes as emerging opportunistic causal agents of superficial mycoses at Balaghat (M.P)

    OpenAIRE

    Singh S; Barde A

    1990-01-01

    A clinico-mycological study of 75 suspected cases of superficial mycoses occurring at Balaghat (MP) was done. Out of these 51 cases were both KOH as well as culture positive. Among these 51 cases, 33 were of onychomycosis and in the rest of the cases either skin and/ or both nails were infected. Among the isolates recovered, 27 were of dermatophytes, 22 non- dermatophytes and 4 yeasts. Trichophyton rubrum was the only species recovered among dermatophytes. The most prevalent among non dermato...

  18. SUPERFICIAL AND CUTANEOUS MYCOSES AT NURSERIES AND SCHOOLS OF MAHALLAT CITY, CENTRAL PART OF IRAN

    OpenAIRE

    P Kordbacheh; Moghaddami, M.; M.A. Asadi

    1994-01-01

    This study was conducted for detection of common superficial and cutaneous mycoses in nurseries and schools of Mahallat during September 1989 to June 1990. A Total of 9884 individuals (under 18 years of age) were both clinically observed and tested by laboratory. 5.6% were positive to mycotic infections and from those the rate of infection for pityrosporosis, tinea versicolor and dermatophytosis were 42.7%, 12.6% and 1.8% respectively. Trichomycosis axillaries and erythrasma (although their e...

  19. Pseudoaneurysm of the superficial temporal artery diagnosed by Doppler ultrasound: case report

    International Nuclear Information System (INIS)

    We report a case of a 27 year-old male with a growing post-traumatic soft-tissue mass. The diagnosis of a superficial temporal artery pseudo aneurysm was made by Doppler Ultrasound, after tomography showed non-conclusive results. In this case, this technique proved to be a low-cost and accessible approach to the initial workup in the management protocol.

  20. [Mercury pollution of the superficial sediments of the Gulf of Lion].

    Science.gov (United States)

    Arnoux, A; Gilles, G; Ramonda, G

    1975-09-15

    Mercury pollution in the superficial sediments of the continental shelf of the golfe du Lion, is characterized by an important extension in its eastern part, which is under the direct influence of the Rhône river, and more limited and fragmented in itw western part. Between both these zones, territories with low contamination persist, of which the hydrodynamism prevents the advance of dense particles containing mercury. PMID:813846

  1. Open Surgical Bypass for Superficial Femoral Artery Occlusion Caused by Blunt Trauma

    OpenAIRE

    Ikeda, Akihiko; Kudo, Yohei; Maeda, Michihiro; Tochiki, Aito; Ichimura, Haruto; Uesugi, Masafumi; Jikuya, Tomoaki

    2015-01-01

    Blunt vascular trauma of the lower extremities brings about a high amputation rate, because other organ injuries disturb revascularization. We experienced a case of a superficial femoral artery occlusion caused by blunt trauma. The patient also had a femoral bone fracture and a large skin defect with deep muscular injuries of the thigh. We performed a femoropopliteal (FP) bypass using a saphenous vein which was routed through the contaminated wound. Postoperative vacuum-assisted closure thera...

  2. External beam radiation therapy followed by high-dose-rate brachytherapy for inoperable superficial esophageal carcinoma

    International Nuclear Information System (INIS)

    Purpose: The aim of this study was to retrospectively evaluate the feasibility, efficacy, and tolerance of external beam radiotherapy followed by high-dose-rate brachytherapy in inoperable patients with superficial esophageal cancer. Patients and Methods: From November 1992 to May 1999, 66 patients with superficial esophageal cancer were treated with exclusive radiotherapy. The median age was 60 years (range, 41-85). Fifty-three percent of them were ineligible for surgery owing to synchronous or previously treated head-and-neck cancer. Most of the patients (n = 49) were evaluated with endoscopic ultrasonography (EUS) or computed tomography (CT). The mean doses of external beam radiotherapy and high-dose rate brachytherapy were 57.1 Gy (±4.83) and 8.82 Gy (±3.98), respectively. The most frequently used regimen was 60 Gy followed by 7 Gy at 5 mm depth in two applications. Results: Among patients evaluated with EUS or CT, the complete response rate was 98%. The 3-, 5-, and 7-year survival rates were 57.9%, 35.6%, and 26.6%, respectively. Median overall survival was 3.8 years. The 5-year relapse-free survival and cause-specific survival were 54.6% and 76.9%. The 5-year overall, relapse-free, and cause-specific survival of the whole population of 66 patients was 33%, 53%, and 77%, respectively. Local failure occurred in 15 of 66 patients; 6 were treated with brachytherapy. Severe late toxicity (mostly esophageal stenosis) rated according to the Radiation Therapy Oncology Group/European Organization for Research and Treatment of Cancer scale occurred in 6 of 66 patients (9%). Conclusion: This well tolerated regimen may be a therapeutic alternative for inoperable patients with superficial esophageal cancer. Only a randomized study could be able to check the potential benefit of brachytherapy after external beam radiation in superficial esophageal cancer

  3. Three-dimensional Superficial Liposculpture of the Hips, Flank, and Thighs

    OpenAIRE

    Yi Xin Zhang, MD; Davide Lazzeri, MD; Luca Grassetti, MD; Alessandro Silvestri, MD; Aurelia Trisliana Perdanasari, MD; Sheng Han, MD; Matteo Torresetti, MD; Giovanni Di Benedetto, MD, PhD; Manuel Francisco Castello, MD

    2015-01-01

    Background: In the last 3 decades, liposuction has become a mainstay of the plastic surgeon’s armamentarium, and the technique has evolved considerably. We retrospectively review all of the liposuction procedures that we performed over the past 20 years. Methods: The principles of superficial 3-dimensional liposuction with respect to preoperative, intraoperative, and postoperative management of patients scheduled to undergo liposuction of the hips, flanks, and thighs were described. Res...

  4. Three-dimensional Superficial Liposculpture of the Hips, Flank, and Thighs

    Directory of Open Access Journals (Sweden)

    Yi Xin Zhang, MD

    2015-01-01

    Conclusions: If performed correctly, 3-dimensional superficial liposuction of the trunk, hips, and thighs can yield very satisfying outcomes because of the excellent contour and the enhanced skin retraction provided by the thin cutaneous adipose flap. Three-dimensional liposuction is a reliable method with proven results. A careful application of the technique combined with accurate surgical planning, a thorough preoperative explanation of real expectations, and postoperative care is crucial.

  5. Three-dimensional Superficial Liposculpture of the Hips, Flank, and Thighs

    OpenAIRE

    Zhang, Yi Xin; Lazzeri, Davide; Grassetti, Luca; Silvestri, Alessandro; Trisliana Perdanasari, Aurelia; Han, Sheng; Torresetti, Matteo; Di Benedetto, Giovanni; Castello, Manuel Francisco

    2015-01-01

    Background: In the last 3 decades, liposuction has become a mainstay of the plastic surgeon’s armamentarium, and the technique has evolved considerably. We retrospectively review all of the liposuction procedures that we performed over the past 20 years. Methods: The principles of superficial 3-dimensional liposuction with respect to preoperative, intraoperative, and postoperative management of patients scheduled to undergo liposuction of the hips, flanks, and thighs were described. Results: ...

  6. Visual Receptive Field Properties of Neurons in the Superficial Superior Colliculus of the Mouse

    OpenAIRE

    Wang, Lupeng; Sarnaik, Rashmi; Rangarajan, Krsna; Liu, Xiaorong; Cang, Jianhua

    2010-01-01

    The mouse is a promising model in the study of visual system function and development because of available genetic tools. However, a quantitative analysis of visual receptive field properties had not been performed in the mouse superior colliculus (SC) despite its importance in mouse vision and its usefulness in developmental studies. We have made single-unit extracellular recordings from superficial layers of the SC in urethane-anesthetized C57/Bl6 mice. We first map receptive fields with fl...

  7. Eradication of superficial fungal infections by conventional and novel approaches: a comprehensive review.

    Science.gov (United States)

    Kumar, Lalit; Verma, Shivani; Bhardwaj, Ankur; Vaidya, Shubha; Vaidya, Bhuvaneshwar

    2014-02-01

    During the last two decades, the occurrence of fungal infections either superficial or systemic has been increasing. Moreover, fungal infections become more difficult to treat when they show coupling with immunogenic diseases like AIDS. Superficial fungal infections are associated with skin, nail and eye and are less prominent to systemic infection. However, it may be dangerous if not treated properly. It is usually observed that conventional formulations including cream, powder, gels etc. are used to treat skin fungal infections even for the deep seated fungal infections. However, these formulations show various side-effects on the application site like burning, redness and swelling. Further, due to the immediate release of drug from these formulations they can stimulate the immune system of body generating high impact allergic reactions. Deep seated fungal infections like invasive aspergillosis and invasive candidiasis may be more difficult to treat because the drug released from conventional topical formulation can not reach at the target site due to the low penetration capacity. Similarly, in case of fungal infection of nail and eye, conventional formulations show problem of less bioavailability. Thus, to overcome the drawbacks of conventional therapy a lot of research works have been carried out to develop novel formulations of antifungal drugs to deliver them superficially. Novel formulations explored for the skin delivery of antifungal drugs include liposomes, niosomes, ethosomes, microemulsions, nanoparticles, microspheres and micelles. These formulations show extended or sustained release of drug, minimizing the side effect on application site, enhancing bioavailability and reducing the dosing frequency. Further, these formulations also show penetration into the deep skin to treat invasive fungal infections. Novel formulations explored in treatment of fungal infections of eye are liposomes and nanoparticles and whether for nail fungal infections

  8. Efficient construction of robust artificial neural networks for accurate determination of superficial sample optical properties

    OpenAIRE

    Chen, Yu-Wen; Tseng, Sheng-Hao

    2015-01-01

    In general, diffuse reflectance spectroscopy (DRS) systems work with photon diffusion models to determine the absorption coefficient μa and reduced scattering coefficient μs' of turbid samples. However, in some DRS measurement scenarios, such as using short source-detector separations to investigate superficial tissues with comparable μa and μs', photon diffusion models might be invalid or might not have analytical solutions. In this study, a systematic workflow of constructing a rapid, accur...

  9. Acquisition and elaboration of superficial three-dimensional images in plastic and reconstructive surgery: Applications

    OpenAIRE

    Alfano C; Mezzana Paolo; Scuderi N

    2005-01-01

    Since 1970, as computed axial tomography machines became easily available and became more sophisticated, image acquisition techniques and analysis improved, developed rapidly and became very useful in medical diagnosis. Today it is possible to examine either the anatomic and functional aspects of deep body organs and tissues including all the minute details as well as their morphological relations with superficial structures. Through precise graphic elaboration programs we can obtain informat...

  10. Superficial cortical landmarks for localization of the hippocampus: Application for temporal lobectomy and amygdalohippocampectomy

    OpenAIRE

    R. Shane Tubbs; Marios Loukas; Barbaro, Nicholas M.; Aaron A Cohen-Gadol

    2015-01-01

    Background: Accessing the hippocampus for amygdalohippocampectomy and procedures such as depth electrode placement requires accurate knowledge regarding the location of the hippocampus. Methods: The authors removed 10 human cadaveric brains (20 sides) from their crania, noted relationships between the lateral temporal neocortex and underlying hippocampus, and measured the distance between the hippocampus and superficial landmarks. Results: Mean distances were as follows: 3.8 cm from t...

  11. Tendon vibration attenuates superficial venous vessel response of the resting limb during static arm exercise

    OpenAIRE

    Ooue Anna; Sato Kohei; Hirasawa Ai; Sadamoto Tomoko

    2012-01-01

    Abstract Background The superficial vein of the resting limb constricts sympathetically during exercise. Central command is the one of the neural mechanisms that controls the cardiovascular response to exercise. However, it is not clear whether central command contributes to venous vessel response during exercise. Tendon vibration during static elbow flexion causes primary muscle spindle afferents, such that a lower central command is required to achieve a given force without altering muscle ...

  12. A Technique of Superficial Medial Collateral Ligament Reconstruction Using an Adjustable-Loop Suspensory Fixation Device

    OpenAIRE

    Deo, Shaneel; Getgood, Alan

    2015-01-01

    This report describes superficial medial collateral ligament reconstruction of the knee using a novel method of graft fixation with the ACL Tightrope RT (Arthrex, Naples, FL). After tibial fixation with either a standard interference screw or staple, femoral fixation of the semitendinosus tendon is performed with the adjustable-loop suspensory fixation device, which allows for both initial graft tensioning and re-tensioning after cyclical knee range of motion. This provides the ability for th...

  13. Intraoral Superficial Angiomyxoma of the Upper Alveolus: Report of a Unique Case

    Directory of Open Access Journals (Sweden)

    Ravindra S. V.

    2012-01-01

    Full Text Available Angiomyxomas are relatively a group of uncommon myxoid mesenchymal tumors characterized by frequent local recurrences and show lack of malignant potential. Basically three types of angiomyxomas are recognized superficial, aggressive, and angiomyofibroblastoma. Though the angiomyxomas are rarely reported in the head and neck region, the paper shows reported cases intraorally in the buccal mucosa and floor of the mouth. Here, the authors report a rare case of angiomyxoma presenting as a growth in the upper posterior alveolar mucosa.

  14. Superficial Palmar Arch Aneurysm after Carpal Tunnel Decompression, a Rare Complication: A Case Report

    Directory of Open Access Journals (Sweden)

    S. Gull

    2011-01-01

    Full Text Available False aneurysms of the palmar arteries are rare. They are usually associated with traumatic injuries to the hand vasculature. We present a case of superficial palmar arch aneurysm (SPAA, complicating carpal tunnel decompression which presented as a pulsatile mass at the site of previous surgery. Initial diagnosis was made on clinical examination and confirmed on doppler ultrasound (US and computed tomographic angiography (CTA. The feeding vessel of the aneurysm was subsequently occluded using coil embolization.

  15. Use of Superficial Temporal Fascia Flap for Treatment of Postradiation Trismus: An Innovation.

    Science.gov (United States)

    Sharma, Rohit; Roy, Indranil Deb; Deshmukh, Tushar S; Bhandari, Amit

    2015-10-01

    Post radiation trismus severely reduces the quality of life. Radiation causes fibrosis of muscles of mastication resulting in severe restriction of mouth opening. Treatment options are limited as most of the local flaps are in the radiation zone. The present case is the first case in existing literature where, following the release of fibrosis secondary to radiation, superficial temporal fascia (STF) was used to cover the defect with excellent results and no recurrence after a year of follow up. PMID:26468832

  16. A new puncture needle (Seldinger technique) for easy antegrade catheterization of the superficial femoral artery

    International Nuclear Information System (INIS)

    Mainly for anatomical reasons a guide-wire or a catheter has a tendency to turn into the deep femoral artery during antegrade catheterization of the lower limb. To overcome this problem a curved puncture needle has been designed which allows positioning of the guide-wire in an anterior direction. Antegrade catheterization of the superficial femoral artery was achieved in 25 patients without lengthy manipulations or complications. With this technique the rate of complications at antegrade catheterization will probably be reduced. (orig.)

  17. Endovascular treatment of superficial femoral artery occlusive disease with stents coated with diamond-like carbon

    Energy Technology Data Exchange (ETDEWEB)

    Schaefer, O. E-mail: schaefer@mrs1.ukl.uni-freiburg.de; Lohrmann, C.; Winterer, J.; Kotter, E.; Langer, M

    2004-12-01

    A major consideration in the reduction of early stent thrombosis and in-stent restenosis is the improvement of biocompatibility of the devices. Diamond-like carbon is a novel material for coating stent surfaces in order to increase biocompatibility. The authors report on the endovascular treatment of two individuals with superficial femoral artery occlusions, using stents coated with diamond-like carbon. Technical and clinical success was achieved in both cases, with primary patency rates of 100% 12 months after intervention.

  18. Endovascular treatment of superficial femoral artery occlusive disease with stents coated with diamond-like carbon

    International Nuclear Information System (INIS)

    A major consideration in the reduction of early stent thrombosis and in-stent restenosis is the improvement of biocompatibility of the devices. Diamond-like carbon is a novel material for coating stent surfaces in order to increase biocompatibility. The authors report on the endovascular treatment of two individuals with superficial femoral artery occlusions, using stents coated with diamond-like carbon. Technical and clinical success was achieved in both cases, with primary patency rates of 100% 12 months after intervention

  19. Application of medical physical culture at extensive superficial burns of the I–II degree

    OpenAIRE

    Vjacheslav Meleshkov

    2015-01-01

    Purpose: to study and prove purpose of medical physical culture at extensive superficial burns of the I–II degree for normalization of exchange processes, the prevention of the developments of stagnation connected with the compelled decrease in physical activity. Materials and Methods: analysis and generalization of scientific and methodical literature. Results: the main means of physical rehabilitation – medical physical culture is considered; its application at treatment of patients with ex...

  20. Angioplasty and stent placement in chronic occlusion of the superficial femoral artery: technique and results.

    OpenAIRE

    Conroy, RM; Gordon, IL; Tobis, JM; Hiro, T; Kasaoka, S; Stemmer, EA; Wilson, SE

    2000-01-01

    PURPOSE: To improve the patency rate for angioplasty in chronic occlusion of the superficial femoral artery by deploying stents after angioplasty. MATERIALS AND METHODS: Angioplasty and stent placement were performed in 61 arteries in 48 male patients. The mean occlusion length was 13.5 cm and the mean stent length was 30 cm. Patency rates were analyzed at 6 months and at 1, 2, 3, and 4 years. The predictors of restenosis were analyzed by univariate and multiple logistic regression. RESULTS: ...

  1. Fluorescein Punctate Staining Traced to Superficial Corneal Epithelial Cells by Impression Cytology and Confocal Microscopy

    OpenAIRE

    Mokhtarzadeh, Maryam; Casey, Richard; Glasgow, Ben J.

    2011-01-01

    Punctate fluorescein staining is an important sign in ocular surface disease but its basis is controversial. The common view is that the spots reflect small epithelial defects. In this study, clinicocytologic and histopathologic correlation of punctate stains in dry eye disease was performed. The hyperfluorescent spots were traced from slit lamp examination to confocal microscopy of tissue to reveal that fluorescent superficial epithelial cells are basis of punctate staining.

  2. Duplication of the superficial femoral artery: comprehensive review of imaging literature and insight into embryology

    Science.gov (United States)

    Hapugoda, Sachintha; Kwan, Gigi Nga Chi; Watkins, Trevor William; Rophael, John A

    2016-01-01

    An extremely rare case of duplicated superficial femoral artery (SFA) was incidentally observed on computed tomography angiogram (CTA) of the lower limbs for presurgical planning for an osteomyocutaneous fibula flap in a patient with T4a oropharyngeal squamous cell carcinoma (SCC). To our knowledge, this is the sixth reported case in the imaging literature. We performed a comprehensive review of the English literature and discuss the underlying embryological origin underpinning this rare anatomical variant. PMID:27504194

  3. Recanalization of superficial femoral artery by retrograde approach via popliteal artery

    International Nuclear Information System (INIS)

    To recanalize the occlusive lesion of superficial femoral artery at origin site by retrograde approach via popliteal artery. 15 patients, who were poor surgical candidates due to coronary artery disease and who had severe occlusive lesion of superficial femoral artery close to its origin with good distal runoffs to popliteal artery, were selected. Patients were all men and range of age were from 53 years to 66 years (mean age: 63 years). Range of lesion length were from 15 cm to 30 cm (mean length: 22.4 cm). Localization of popliteal artery was done with Doppler stethoscope or 'road-map' DSA. The method of recanalization were transluminal endarterectomy catheter (TEC), TEC and angioplasty, thrombolysoangioplasty (TLA). Retrograde puncture of popliteal artery was done in 15 patients successfully. TEC and PTA was performed in 9 patients, TEC only in 2 patients, and TLA and PTA in 2 patients. During the follow-up period of 5 months to 2 years reocclusion did not occur in 10 patients except for 1 patient with poor cardiac output in whom it occurred 1 day later. Remained 4 patients were lost in follow up. Any neurologic or vascular complication did not occur. Retrograde approach of superficial femoral artery via popliteal artery in patients with difficult vascular intervention by common method provides a useful, alternative recanalization method

  4. Recanalization of superficial femoral artery by retrograde approach via popliteal artery

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jae Kyu; Kim, Hyung Kil; Yun, Ung; Seo, Jeong Jin; Kang, Heoung Keun [Chonnam University Medical School, Kwangju (Korea, Republic of)

    1995-09-15

    To recanalize the occlusive lesion of superficial femoral artery at origin site by retrograde approach via popliteal artery. 15 patients, who were poor surgical candidates due to coronary artery disease and who had severe occlusive lesion of superficial femoral artery close to its origin with good distal runoffs to popliteal artery, were selected. Patients were all men and range of age were from 53 years to 66 years (mean age: 63 years). Range of lesion length were from 15 cm to 30 cm (mean length: 22.4 cm). Localization of popliteal artery was done with Doppler stethoscope or 'road-map' DSA. The method of recanalization were transluminal endarterectomy catheter (TEC), TEC and angioplasty, thrombolysoangioplasty (TLA). Retrograde puncture of popliteal artery was done in 15 patients successfully. TEC and PTA was performed in 9 patients, TEC only in 2 patients, and TLA and PTA in 2 patients. During the follow-up period of 5 months to 2 years reocclusion did not occur in 10 patients except for 1 patient with poor cardiac output in whom it occurred 1 day later. Remained 4 patients were lost in follow up. Any neurologic or vascular complication did not occur. Retrograde approach of superficial femoral artery via popliteal artery in patients with difficult vascular intervention by common method provides a useful, alternative recanalization method.

  5. El agrietamiento superficial de las pastas puras de cemento: una interpretación

    Directory of Open Access Journals (Sweden)

    Calleja, J.

    1964-12-01

    Full Text Available Not availableSe aborda por métodos analíticos y técnicas de difracción de rayos X el problema de determinar las posibles causas del agrietamiento superficial de galletas de pasta pura de cemento. Se encuentran diferencias de composición y constitución entre la zona superficial agrietada de las galletas y el resto de la masa, hallándose concordancia entre determinados constituyentes químicos calculados a base del análisis químico y los resultados de difracción de rayos X. Se interpretan estas diferencias como atribuibles a una exudación de lechada de la pasta, con extracción de álcalis solubles y yeso. Como consecuencia, la exudación provoca una carbonatación, una mayor retracción y posiblemente un fraguado acelerado en la zona superficial en relación con la masa interior de las galletas. Como causa directa de la ·exudación se acepta la hipótesis de una granulometría anormal del cemento, probablemente debida a un exceso de finos o gruesos por una molienda grosera, y producida por una deficiencia de tipo mecánico en el proceso de molturación del clínker.

  6. In vivo high-resolution 3D photoacoustic imaging of superficial vascular anatomy

    Science.gov (United States)

    Zhang, E. Z.; Laufer, J. G.; Pedley, R. B.; Beard, P. C.

    2009-02-01

    The application of a photoacoustic imaging instrument based upon a Fabry-Perot polymer film ultrasound sensor to imaging the superficial vasculature is described. This approach provides a backward mode-sensing configuration that has the potential to overcome the limitations of current piezoelectric based detection systems used in superficial photoacoustic imaging. The system has been evaluated by obtaining non-invasive images of the vasculature in human and mouse skin as well as mouse models of human colorectal tumours. These studies showed that the system can provide high-resolution 3D images of vascular structures to depths of up to 5 mm. It is considered that this type of instrument may find a role in the clinical assessment of conditions characterized by changes in the vasculature such as skin tumours and superficial soft tissue damage due to burns, wounds or ulceration. It may also find application in the characterization of small animal cancer models where it is important to follow the tumour vasculature over time in order to study its development and/or response to therapy.

  7. In vivo high-resolution 3D photoacoustic imaging of superficial vascular anatomy

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, E Z; Laufer, J G; Beard, P C [Department of Medical Physics and Bioengineering, University College London, Gower Street, London, WC1E 6BT (United Kingdom); Pedley, R B [UCL Cancer Institute, Paul O' Gorman Building, University College London, 72 Huntley St, London WC1E 6BT (United Kingdom)

    2009-02-21

    The application of a photoacoustic imaging instrument based upon a Fabry-Perot polymer film ultrasound sensor to imaging the superficial vasculature is described. This approach provides a backward mode-sensing configuration that has the potential to overcome the limitations of current piezoelectric based detection systems used in superficial photoacoustic imaging. The system has been evaluated by obtaining non-invasive images of the vasculature in human and mouse skin as well as mouse models of human colorectal tumours. These studies showed that the system can provide high-resolution 3D images of vascular structures to depths of up to 5 mm. It is considered that this type of instrument may find a role in the clinical assessment of conditions characterized by changes in the vasculature such as skin tumours and superficial soft tissue damage due to burns, wounds or ulceration. It may also find application in the characterization of small animal cancer models where it is important to follow the tumour vasculature over time in order to study its development and/or response to therapy.

  8. Improvement of the healing process in superficial skin wounds after treatment with EMOLED

    Science.gov (United States)

    Cicchi, Riccardo; Rossi, Francesca; Tatini, Francesca; Bacci, Stefano; De Siena, Gaetano; Alfieri, Domenico; Pini, Roberto; Pavone, Francesco S.

    2015-02-01

    A faster healing process was observed in superficial skin wounds after irradiation with the EMOLED photocoagulator. The instrument consists of a compact handheld photocoagulation device, useful for inducing coagulation in superficial abrasions. In this study, living animals were mechanically abraded in four regions of their back: two regions were left untreated, the other two were treated with EMOLED, healthy skin surrounding the wounds was used as a control. The treatment effect on skin was monitored by visual observations, histopathological analysis, immuno-histochemical analysis, and non-linear microscopic imaging performed 8 days after the treatment, finding no adverse reactions and no thermal damage in both treated areas and surrounding tissues. In addition, a faster healing process, a reduced inflammatory response, a higher collagen content, and a better-recovered skin morphology was evidenced in the treated tissue with respect to the untreated tissue. These morphological features were characterized by means of immuno-histochemical analysis, aimed at imaging fibroblasts and myofibroblasts, and by SHG microscopy, aimed at characterizing collagen organization, demonstrating a fully recovered aspect of dermis as well as a faster neocollagenesis in the treated regions. This study demonstrates that the selective photothermal effect we used for inducing immediate coagulation in superficial wounds is associated to a minimal inflammatory response, which provides reduced recovery times and improved healing process.

  9. Tolerance and safety of superficial chemical peeling with salicylic acid in various facial dermatoses

    Directory of Open Access Journals (Sweden)

    Iqbal Zafar

    2005-03-01

    Full Text Available BACKGROUND: Chemical peeling is a skin-wounding procedure that may have some potentially undesirable side-effects. AIMS: The present study is directed towards safety concerns associated with superficial chemical peeling with salicylic acid in various facial dermatoses. METHODS: The study was a non-comparative and a prospective one. Two hundred and sixty-eight patients of either sex, aged between 10 to 60 years, undergoing superficial chemical peeling for various facial dermatoses (melasma, acne vulgaris, freckles, post-inflammatory scars/pigmentation, actinic keratoses, plane facial warts, etc. were included in the study. Eight weekly peeling sessions were carried out in each patient. Tolerance to the procedure and any undesirable effects noted during these sessions were recorded. RESULTS: Almost all the patients tolerated the procedure well. Mild discomfort, burning, irritation and erythema were quite common but the incidence of major side-effects was very low and these too, were easily manageable. There was no significant difference in the incidence of side-effects between facial dermatoses (melasma, acne and other pigmentary disorders. CONCLUSION: Chemical peeling with salicylic acid is a well tolerated and safe treatment modality in many superficial facial dermatoses.

  10. Outcome of superficial squamous cell carcinoma of the esophagus: a clinicopathological study

    Directory of Open Access Journals (Sweden)

    Maria Aparecida Coelho de Arruda Henry

    2013-05-01

    Full Text Available PURPOSE: To analyze the clinicopathological features and outcome of patients with pathologically proven superficial squamous cell carcinoma of the esophagus. METHODS: A total of 234 consecutive cases of esophageal carcinoma in a 15-year period were reviewed. RESULTS: Superficial esophageal cancer was found in five patients (2.1%. They were four men and one woman and the mean age was 52.5 years. Smoking and alcohol were the main risk factors. Achalasia due to Chagas disease occurred in one patient and a second primary tumor developed in the larynx in another patient. Four patients underwent esophagectomy and one patient received chemoradiotherapy. The histopathologic diagnosis was of squamous cell carcinoma in all cases. Intramucosal tumor (Tis was identified in three cases and superficially invasive carcinoma in two cases. Four patients are free of disease with survival times of two, four, six and nine years. The patient who developed laryngeal cancer died six years after esophagectomy. CONCLUSION: Long-term survival in patients with esophageal cancer is related to early diagnosis. Therefore, a less aggressive surgical approach, such as endoscopic resection, may be a good option for these patients, if depth of tumor invasion can be accurately predicted by the new imaging tools.

  11. Interconnectivity between the Superficial Aquifer and the Deep Confined Aquifers of the Gnangara Mound, Western Australia

    International Nuclear Information System (INIS)

    Perth groundwater resources are obtained from three major aquifers that occur beneath the Perth metropolitan area: the Superficial aquifer, Leederville aquifer and Yarragadee aquifer. Each aquifer has a unique seasonal water level pattern controlled by soils, geomorphology and geology. Land use is mainly responsible for variations in recharge; however, the hydraulic properties control aquifer response and water level pattern to a greater degree. Groundwater in the three aquifers is generally of very good quality except in localised areas. Salinity increases with depth and in direction of groundwater flow in the three aquifers. The best water quality is in the Superficial aquifer in the Wanneroo well field area. The geochemistry and stable isotope signatures from the three major aquifers revealed distinct water types that suggest very little hydraulic connection or mixing of waters between these aquifers at the present abstraction and recharge regimes. The results also show that the Leederville and Yarragadee aquifers were recharged during earlier cooler times while the Superficial aquifer is being recharged at present

  12. Preserved xenogenic amniotic membrane as a patch on the repair of superficial corneal ulcers in rabbits

    Directory of Open Access Journals (Sweden)

    Kelly Cristine de Sousa Pontes

    2012-06-01

    Full Text Available The aim of this study was to evaluate the effects of canine amniotic membrane, previously preserved in glycerin, used as a patch on the repair of experimentally-made superficial corneal ulcers and to compare corneal epithelization between the treated and non-treated groups. Xenogeneic amniotic membranes were collected aseptically and preserved in 99% glycerin at room temperature. Each animal was anesthetized and submitted to superficial corneal keratectomy of the left eye. The treated group received a fragment of canine amniotic membrane as a patch, while the control group had no treatment. The treated group showed blepharospasm, ocular discharge and conjunctival congestion. The membrane accelerated corneal repair in the beginning of the process, however, it delayed its conclusion (p<0.05. Treated eyes showed greater vessel formation and decreased corneal transparency (p<0.05. The stroma of the control group was thicker than that of the treated group (p<0.05. We suggest that amniotic membrane used in this manner can be applied as a therapy for superficial corneal ulcers in the beginning phases of the repair process.

  13. In vivo high-resolution 3D photoacoustic imaging of superficial vascular anatomy

    International Nuclear Information System (INIS)

    The application of a photoacoustic imaging instrument based upon a Fabry-Perot polymer film ultrasound sensor to imaging the superficial vasculature is described. This approach provides a backward mode-sensing configuration that has the potential to overcome the limitations of current piezoelectric based detection systems used in superficial photoacoustic imaging. The system has been evaluated by obtaining non-invasive images of the vasculature in human and mouse skin as well as mouse models of human colorectal tumours. These studies showed that the system can provide high-resolution 3D images of vascular structures to depths of up to 5 mm. It is considered that this type of instrument may find a role in the clinical assessment of conditions characterized by changes in the vasculature such as skin tumours and superficial soft tissue damage due to burns, wounds or ulceration. It may also find application in the characterization of small animal cancer models where it is important to follow the tumour vasculature over time in order to study its development and/or response to therapy.

  14. Superficial circumflex iliac artery pure skin perforator-based superthin flap for hand and finger reconstruction.

    Science.gov (United States)

    Narushima, Mitsunaga; Iida, Takuya; Kaji, Nobuyuki; Yamamoto, Takumi; Yoshimatsu, Hidehiko; Hara, Hisako; Kikuchi, Kazuki; Araki, Jun; Yamashita, Shuji; Koshima, Isao

    2016-06-01

    For hand and finger reconstruction, thin and flexible skin coverage is ideally required. A free flap is one of the surgical options used for large defects. However, a flap containing the fat layer is bulky. Several debulking surgeries are often needed for aesthetic and functional purposes. To overcome this disadvantage, we herein report our experience of six cases of hand and finger reconstruction using a pure skin perforator (PSP) flap concept. A PSP flap is a thin skin flap that is vascularized by a perforator branch penetrating the dermis. The thickness of the PSP flap could be approximately ≤2 mm as needed. The superficial circumflex iliac artery and superficial inferior epigastric artery were used as a flap pedicle. Secondary defatting operations were not required. For the success of PSP flap elevation, we applied three techniques: the microdissection technique for vessel separation, thin flap elevation at the superficial fascial layer, and the temporary clamping method. Temporary clamping was applied for the main trunk of pedicle vessels during debulking to prevent unwanted bleeding, which allowed us to freely perform three-dimensional defatting. Using these three techniques, the PSP flap can be elevated and adjusted for complex contouring of the hand and finger. Although the use of the PSP flap requires further study, the PSP flap is an effective, superthin flap with the advantages of both skin graft and perforator flaps. PMID:27085610

  15. Diagnostic Accuracy of Mucosal Biopsy versus Endoscopic Mucosal Resection in Barrett's Esophagus and Related Superficial Lesions.

    Science.gov (United States)

    Elsadek, Hany M; Radwan, Mamdouh M

    2015-01-01

    Background. Endoscopic surveillance for early detection of dysplastic or neoplastic changes in patients with Barrett's esophagus (BE) depends usually on biopsy. The diagnostic and therapeutic role of endoscopic mucosal resection (EMR) in BE is rapidly growing. Objective. The aim of this study was to check the accuracy of biopsy for precise histopathologic diagnosis of dysplasia and neoplasia, compared to EMR in patients having BE and related superficial esophageal lesions. Methods. A total of 48 patients with previously diagnosed BE (36 men, 12 women, mean age 49.75 ± 13.3 years) underwent routine surveillance endoscopic examination. Biopsies were taken from superficial lesions, if present, and otherwise from BE segments. Then, EMR was performed within three weeks. Results. Biopsy based histopathologic diagnoses were nondysplastic BE (NDBE), 22 cases; low-grade dysplasia (LGD), 14 cases; high-grade dysplasia (HGD), 8 cases; intramucosal carcinoma (IMC), two cases; and invasive adenocarcinoma (IAC), two cases. EMR based diagnosis differed from biopsy based diagnosis (either upgrading or downgrading) in 20 cases (41.67%), (Kappa = 0.43, 95% CI: 0.170-0.69). Conclusions. Biopsy is not a satisfactory method for accurate diagnosis of dysplastic or neoplastic changes in BE patients with or without suspicious superficial lesions. EMR should therefore be the preferred diagnostic method in such patients. PMID:27347544

  16. Efficacy of Pattern Scan Laser photocoagulation for superficial conjunctival nevi ablation.

    Science.gov (United States)

    Park, Young Min; Lee, Ji-Eun; Lee, Jong Soo

    2016-07-01

    This study reports the efficacy and safety of Pattern Scan Laser (PASCAL) photocoagulation in the removal of superficial conjunctival nevi. Superficial conjunctival nevi were removed from 10 eyes of 10 patients using PASCAL. The laser spots were 200 μm in size, and the power delivered ranged from 250 to 300 mW. The duration of the laser pulse was kept at the minimum needed for adequate lesion removal. The duration of the laser pulse administered to the patients varied from 100 to 200 ms. Complete removal of the conjunctival nevus was observed in all the patients after PASCAL photocoagulation. Six months after treatment, complete re-epithelialization of the overlying conjunctiva was noted. No signs of recurrence or scarring were found in any of the patients during the follow-up period. Pure thermal denaturation is the main mechanism of PASCAL photocoagulation for removal of superficial conjunctival nevi. PASCAL can be considered as an alternative to conventional argon laser treatment or surgery. PMID:26914686

  17. Thermographic imaging of the superficial temperature in racing greyhounds before and after the race.

    Science.gov (United States)

    Vainionpää, Mari; Tienhaara, Esa-Pekka; Raekallio, Marja; Junnila, Jouni; Snellman, Marjatta; Vainio, Outi

    2012-01-01

    A total of 47 racing greyhounds were enrolled in this study on two race days (in July and September, resp.) at a racetrack. Twelve of the dogs participated in the study on both days. Thermographic images were taken before and after each race. From the images, superficial temperature points of selected sites (tendo calcaneus, musculus gastrocnemius, musculus gracilis, and musculus biceps femoris portio caudalis) were taken and used to investigate the differences in superficial temperatures before and after the race. The thermographic images were compared between the right and left legs of a dog, between the raced distances, and between the two race days. The theoretical heat capacity of a racing greyhound was calculated. With regard to all distances raced, the superficial temperatures measured from the musculus gastrocnemius were significantly higher after the race than at baseline. No significant differences were found between the left and right legs of a dog after completing any of the distances. Significant difference was found between the two race days. The heat loss mechanisms of racing greyhounds during the race through forced conduction, radiation, evaporation, and panting can be considered adequate when observing the calculated heat capacity of the dogs. PMID:23097633

  18. Thermographic Imaging of the Superficial Temperature in Racing Greyhounds before and after the Race

    Directory of Open Access Journals (Sweden)

    Mari Vainionpää

    2012-01-01

    Full Text Available A total of 47 racing greyhounds were enrolled in this study on two race days (in July and September, resp. at a racetrack. Twelve of the dogs participated in the study on both days. Thermographic images were taken before and after each race. From the images, superficial temperature points of selected sites (tendo calcaneus, musculus gastrocnemius, musculus gracilis, and musculus biceps femoris portio caudalis were taken and used to investigate the differences in superficial temperatures before and after the race. The thermographic images were compared between the right and left legs of a dog, between the raced distances, and between the two race days. The theoretical heat capacity of a racing greyhound was calculated. With regard to all distances raced, the superficial temperatures measured from the musculus gastrocnemius were significantly higher after the race than at baseline. No significant differences were found between the left and right legs of a dog after completing any of the distances. Significant difference was found between the two race days. The heat loss mechanisms of racing greyhounds during the race through forced conduction, radiation, evaporation, and panting can be considered adequate when observing the calculated heat capacity of the dogs.

  19. Effect of prophylactic treatments on the superficial roughness of dental tissues and of two esthetic restorative materials Efeito de tratamentos profiláticos na rugosidade superficial de tecidos dentais e de dois materiais restauradores estéticos

    OpenAIRE

    Daniele Salami; Maria Aparecida Alves de Cerqueira Luz

    2003-01-01

    Dental prophylaxis is a common way to remove dental plaque and stain, both undesirable factors in most dentistry procedures. However, besides cleaning the tooth surface, prophylactic techniques may increase the surface roughness of restorations and dental tissues, which, in turn, may result in plaque accumulation, superficial staining and superficial degradation. This study evaluated the effect of three prophylactic techniques - sodium bicarbonate jet, pumice paste and whiting paste - on the ...

  20. Superficial siderosis of the central nervous system due to brachial plexus injury: a case report; Siderose superficial do sistema nervoso central por lesao do plexo braquial: relato de caso

    Energy Technology Data Exchange (ETDEWEB)

    Setogutti, Enio Tadashi; Cassuriaga, Jefferson; Valduga, Simone Gianella [Fundacao Universitaria de Cardiologia, Porto Alegre, RS (Brazil). Instituto de Cardiologia. Setor de Ressonancia Magnetica]. E-mails: pesquisa@cardiologia.org.br; editoracao-pc@cardiologia.org.br; Lorenzzoni, Pablo Longhi; Severgnini, Giancarlo Muraro [Fundacao Universitaria de Cardiologia, Porto Alegre, RS (Brazil). Instituto de Cardiologia; Feldman, Carlos Jader [Fundacao Universitaria de Cardiologia, Porto Alegre, RS (Brazil). Instituto de Cardiologia. Setor de Radiologia

    2005-10-15

    Superficial siderosis can be caused by hemosiderin deposition o the leptomeninges and subpial layers of the neuro-axis due to recurrent subarachnoid haemorrhage. Probable intrathecal bleeding sites must be investigated. In ut t 50% of the patients the bleeding source may be identified and the progression of the disease can be interrupted. In this study, the authors present a case of superficial siderosis of the central nervous system developed two decades after a traumatic lesion of the brachial plexus.(author)

  1. Risk Factors and Clinical Evaluation of Superficial Femoral Artery Stent Fracture: Prote'ge'GPS Stent

    International Nuclear Information System (INIS)

    To evaluate the occurrence of superficial femoral artery stent fractures, the risk factors of stent fracture, and the relationship between fractures and clinical findings. Of the 38 patients who underwent treatment with Prote'ge'GPS stenting due to arterial occlusions on the superficial femoral artery, 17 also underwent a clinical analysis. Forty-three stents were inserted in the 17 superficial femoral arteries, ranging between 15 and 50 cm in length, with a mean treated length of 26.4 cm (15-50 cm). A fracture was evaluated by taking a PA and lateral simple radiography, as well as a follow-up evaluation accompanied with a CT angiography, DSA, and a color Doppler sonography. The examination involved the assessment of the difference between bone fractures due to length, placement, and frequency. Fractures occurred in 13 of 43 stents (30.2%). A total of 10 (71.4%) occurred in the upper third, compared to 4 (28.6%) in the lower third of the superficial femoral artery. In addition, 10 stents (71.4%) had a single strut fracture, whereas 4 (28.6%) had multiple strut fractures. A stent fracture occurred more frequently when the stents and lesions were longer (p=0.021, 0.012) and the stents were inserted near the joint. However, there was no significant relationship between stent numbers and the fractures (p=0.126). When the stents were inserted along the popliteal artery, a stent fracture occurred more frequently in the lower third of the artery. The stent fractures did not significantly influence the patency rate of the stented artery (p=0.44) Prote'ge'GPS stents in the superficial femoral artery revealed a considerable number of fractures and the fracture frequency showed a significant relationship with the length of stents and lesions. The closer stent insertion was to the joints, the more frequently fractures occurred. There were no evident significant relationships between the presence of stent fractures and the patency of the stented arteries

  2. Study of the mechanisms involved in the laser superficial hardening process of metallic alloys; Estudo dos mecanismos envolvidos no processo de endurecimento superficial a laser de ligas metalicas

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Edmara Marques Rodrigues da

    2001-07-01

    The laser superficial hardening process of a ferrous alloy (gray cast iron) and of an aluminum-silicon alloy was investigated in this work. These metallic alloys are used in the automobile industry for manufacturing cylinders and pistons, respectively. By application of individual pulses and single tracks, the involved mechanisms during the processing were studied. Variables such as energy density, power density, temporal width, beam diameter on the sample surface, atmosphere of the processing region, overlapping and scanning velocity. The hardened surface was characterized by optical and scanning electronic microscopy, dispersive energy microanalysis, X-ray mapping, X-ray diffraction, and measurements of roughness and Vickers microhardness. Depending on the processing parameters, it is possible to obtain different microstructures. The affected area of gray cast iron, can be hardened by remelting or transformation hardening (total or partial) if the reached temperature is higher or not that of melting temperature. Laser treatment originated new structures such as retained austenite, martensite and, occasionally, eutectic of cellular dendritic structure. Aluminum-silicon alloy does not have phase transformation in solid state, it can be hardened only by remelting. The increase of hardness is a function of the precipitation hardening process, which makes the silicon particles smaller and more disperse in the matrix. Maximal values of microhardness (700-1000 HV) were reached with the laser treatment in gray cast iron samples. The initial microhardness is of 242 HV. For aluminum-silicon alloy, the laser remelting increases the initial microhardness of 128 HV to the range of 160-320 HV. The found results give a new perspective for using the CLA/IPEN's laser in the heat treatment area. Besides providing a higher absorptivity to the materials, compared with the CO{sub 2} laser, and optical fiber access, the superficial hardening with Nd:YAG laser, depending on the

  3. Superficial cerebral and spinal haemosiderosis caused by secondary tethered cord syndrome after resection of a spinal lymphoma

    OpenAIRE

    Zingler, Vera C.; Grau, Stefan; Tonn, Jörg-Christian; Jahn, Klaus; Linn, Jennifer; Brandt, Thomas; Strupp, Michael

    2007-01-01

    Superficial haemosiderosis results from chronic subarachnoid haemorrhage during which haemosiderin is deposited in the leptomeninges around the brain, spinal cord and cranial nerves. We describe an exceptional case of superficial haemosiderosis characterised by two special aspects. (1) The cause was a secondary tethered cord syndrome due to dural adhesions which had developed 8 years after resection of a thoracic lymphoma and (2) an explorative neurosurgical procedure with complete untetherin...

  4. Quality and safety evaluation of a Ghanaian polyherbal product EAF-2011 for the management of superficial mycoses

    OpenAIRE

    Dickson R.A; Mensah M.L.K; Thomford K.P; Annan K; Mills-Robertson F.C; Appiah AA; Quarshie O; Antwi S; Kaminta S; Edoh D

    2013-01-01

    Background: The widespread use of herbal medicines in recent years means that issues concerning their quality, safety and efficacy need to be answered. In the current study, the polyherbal formulation EAF-2011 used in the Centre for Scientific Research into Plant Medicine, Mampong-Akwapemfor the management of superficial mycoses was evaluated for its quality and safety. Aim: The study sought to evaluate the quality and safety of the product in the management of superficial mycoses. Method: Th...

  5. Topography of the major superficial lymph nodes and their efferent lymph pathways in the koala (Phascolarctos cinereus).

    OpenAIRE

    Hanger, J J; Heath, T J

    1991-01-01

    The koala has an inguinoaxillary lymph trunk on either side of the ventral midline, and this carries efferent lymph from the superficial inguinal lymph node directly to the deep axillary lymph node. The superficial lymph nodes are large and soft compared with those of the domestic species, and each lymph centre usually contains only one or two large lymph nodes. Koalas have a rostral mandibular lymph node which has not been described in other species, but lack popliteal and subiliac lymph nod...

  6. Hyperthermia combined with radiation therapy for superficial breast cancer and chest wall recurrence: A review of the randomised data

    OpenAIRE

    Zagar, Timothy M.; OLESON, JAMES R.; Vujaskovic, Zeljko; Dewhirst, Mark W.; Craciunescu, Oana I; BLACKWELL, KIMBERLY L.; Prosnitz, Leonard R.; Jones, Ellen L.

    2010-01-01

    Hyperthermia has long been used in combination with radiation for the treatment of superficial malignancies, in part due to its radiosensitising capabilities. Patients who suffer superficial recurrences of breast cancer, be it in their chest wall following mastectomy, or in their breast after breast conservation, typically have poor clinical outcomes. They often develop distant metastatic disease, but one must not overlook the problems associated with an uncontrolled local failure. Morbidity ...

  7. An investigation of the topography of the lymphatic system of the grey kangaroo (Macropus giganteus). 1. The superficial lymphatic system.

    OpenAIRE

    Hopwood, P R

    1988-01-01

    The superficial lymphatic system of the grey kangaroo, Macropus giganteus is described. The description is based on dissections of 130 eastern grey kangaroos. The most significant difference found between the superficial lymphatic drainage pattern of kangaroos and that of the domestic species was the existence of large inguino-axillary lymphatic trunks in the kangaroo. Thus in the kangaroo, instead of lymph passing from the inguinal lymphocentre to the lumbar lymphatic trunks as is the situat...

  8. Retrograde catheterization via politeal artery for the treatment of ipsilateral superficial femoral artery occlusive disease: its clinical application

    International Nuclear Information System (INIS)

    Objective: To investigate the clinical effect and application of retrograde catheterization via politeal artery in treating ipsilateral superficial femoral artery occlusive diseases. Methods: During the period from Jan. 2008 to June 2011, 15 patients with superficial femoral artery occlusive diseases were collected. A total of 17 narrowed or obstructed superficial femoral arteries were detected, including right (n=10) and left (n=7) femoral arteries. The length of the diseased artery ranged from 9 to 18 cm, with a mean of (12.5±6.8) cm. Percutaneous angioplasty (PTA) through ipsilateral retrograde catheterization via politeal artery together with stent implantation was performed to reopen the narrowed or obstructed superficial femoral arteries. After the procedure all patients were followed up for 3-24 months. The clinical results were analyzed. Results: The therapeutic success rate was 100% (17/17). No serious complications occurred. After the treatment, the ischemic symptoms were markedly improved or even disappeared. In 89.47% of patients (17/19) the superficial femoral arteries remained patent during the follow-up period. The preoperative ankle brachial index (ABI) was 0.15-0.48 (mean 0.28), while the postoperative ABI was 0.69-1.05 (mean 0.88). The difference in ABI between pre-operation and post-operation was statistically significant (P<0.05). Conclusion: For the treatment of superficial femoral arterial occlusive diseases, PTA through ipsilateral retrograde catheterization via politeal artery together with stent implantation is a safe effective therapy. (authors)

  9. Valoración de los principales parámetros que definen la calidad de las superficies anodizadas en piezas de aluminio para la construcción. // Evaluation of anodized surfaces main parameters that define quality of aluminum parts.

    Directory of Open Access Journals (Sweden)

    J. A. Pérez García

    2004-01-01

    Full Text Available Actualmente en la construcción de edificaciones se utiliza profusamente el aluminio en puertas, ventanas, pasamanos, etc.Con el objetivo de mejorar los parámetros que caracterizan sus cualidades estéticas y de resistencia a la corrosión, estosartículos son sometidos al proceso de anodizado. De todos los factores que intervienen en este proceso, se ha llegado aconocer que hay tres que tienen mayor relevancia en la obtención de la calidad deseada en las piezas: tratamiento previo dela superficie a anodizar, color a aplicar y espesor de la capa de recubrimiento. Este trabajo ofrece, sobre la base deexperimentos llevados a cabo, las relaciones cualitativas entre estos factores y los parámetros que caracterizan la calidaddesde el punto de vista estético (brillo, aspecto, textura y de su resistencia a la corrosión.Palabras claves: Aluminio, anodizado, calidad.__________________________________________________________________________Abstract.Aluminum articles such as windows and doors, etc are widely applied in modern building construction. In order to upgradeaesthetic and corrosion resistant properties of these articles the anodizing process is frequently used. Among all factors thatare involved in this process, there are three having high relevance in order to obtain the desired quality of the final product:previous surface treatment (before anodizing, color of the final article and anodized layers thickness. This paper offers thequalitative relationships between these factors and parameters characterizing corrosion resistance properties and aesthetics.Key words: Aluminun, anodize, quality.

  10. Cyclic testing of porcelain laminiate veneers on superficial enamel and dentin: Pressed vs. conventional layered porcelain

    Science.gov (United States)

    Tawde, Shweta

    Statement of Problem: Clinicians are inclined towards more aggressive teeth preparations to accommodate the thickness of the veneering material. The principle of conservative tooth preparation is compromised. Purpose: By using a conservative approach to treatment with porcelain veneers, long-lasting, esthetic and functional results may be achieved. Sacrificing as little tooth structure as possible and conserving the supporting tissues will facilitate prospective patients. Materials and Methods: Forty extracted human maxillary and mandibular canines were selected. The teeth were divided into one of two groups (pressable and stackable) and further subdivided according to tooth substrate (all-enamel or mixed enamel-dentin exposure). Twenty canine teeth were allotted to the pressable veneer group and 20 were allotted to the stackable veneer group. Of the 20 teeth in the pressable group, all were pressed with a lithium disilicate ceramic system (IPS e.max Press), 10 with labial tooth reduction of 0.3-0.5 mm maintaining superficial enamel (PEN) and the remaining 10 teeth with labial veneer reduction of 0.8-1.0 mm exposing superficial dentin (PDN). Of the 20 teeth in the stackable group, all were stacked/ layered with conventional feldspathic porcelain (Fortune; Williams/ Ivoclar); with labial veneer reduction of 0.3-0.5 mm maintaining superficial enamel (SEN) and the remaining 10 teeth with labial veneer reduction of 0.8-1.0 mm exposing superficial dentin (SDN). Silicon putty matrix was fabricated prior to teeth preparation to estimate the teeth reduction. The prepared facial reduction was limited to the incisal edge. No incisal or palatal/lingual reduction was performed. Impressions of the prepared teeth were taken in medium/light-bodied PVS. Master casts were made in Resin Rock. The stackable group specimens were made with fabricating refractory dies and after following the recommended steps of laboratory procedure, stackable veneers were processed. The pressable group

  11. Comportamiento parabólico del crecimiento de capas boradas en los aceros Y8A y X12M // Parabolic behavior of boriding layers growth in Y8A and X12M steels

    Directory of Open Access Journals (Sweden)

    C. Figueroa Hernández

    1999-01-01

    Full Text Available Se determina la influencia que tienen los principales parámetros tecnológicos del borado en el crecimiento de las capas y secorrobora el cumplimiento de la ley parabólica para predecir este comportamiento en los aceros Y8A y X12M.El proceso de borado se aplica en una mezcla de carburo de silicio y bórax (70 y 30 % a la temperatura de 850, 900 y 950 oCdurante un tiempo de 2, 4 y 6 horas. Como variable dependiente se seleccionó la profundidad del recubrimiento, a partir de lacual se obtuvieron los coeficientes del crecimiento parabólico y la energía de activación en función de la temperatura, el tiempodel proceso y el tipo de acero.La caracterización metalográfica reveló la presencia de la fase Fe2BPalabras claves: Borado, recubrimiento superf icial , t ecnología de recubrimiento.__________________________________________________________________________AbstractIt was determined the influence of the main technological parameters of the boriding process, and a mathematical model thatallows to predict this conduct on the steels Y8A and X12M steels was obtained.The boriding process is applied in a mixture of silicon carbide and borax (70 and 30% at 850, 900 and 950 oC temperatureduring a period of time 2, 4 and 6 hours. As an independent variable the depth of the coat was selected.It was obtained the parabolic growth coefficients, and the activation energy according to temperature, time and the chemicalcomposition of steel.Metallografic analysis reveals the presence of Fe2B phase.Key words: Boriding process, superf icial coat , coat technology.

  12. Dissociation of μ- and δ-opioid inhibition of glutamatergic synaptic transmission in superficial dorsal horn

    Directory of Open Access Journals (Sweden)

    Vaughan Christopher W

    2010-10-01

    Full Text Available Abstract Background There is anatomical and behavioural evidence that μ- and δ-opioid receptors modulate distinct nociceptive modalities within the superficial dorsal horn. The aim of the present study was to examine whether μ- and δ-opioid receptor activation differentially modulates TRP sensitive inputs to neurons within the superficial dorsal horn. To do this, whole cell patch clamp recordings were made from lamina I - II neurons in rat spinal cord slices in vitro to examine the effect of opioids on TRP agonist-enhanced glutamatergic spontaneous miniature excitatory postsynaptic currents (EPSCs. Results Under basal conditions the μ-opioid agonist DAMGO (3 μM reduced the rate of miniature EPSCs in 68% of neurons, while the δ- and κ-opioid agonists deltorphin-II (300 nM and U69593 (300 nM did so in 13 - 17% of neurons tested. The TRP agonists menthol (400 μM and icilin (100 μM both produced a Ca2+-dependent increase in miniature EPSC rate which was unaffected by the voltage dependent calcium channel (VDCC blocker Cd2+. The proportion of neurons in which deltorphin-II reduced the miniature EPSC rate was enhanced in the presence of icilin (83%, but not menthol (0%. By contrast, the proportion of DAMGO and U69593 responders was unaltered in the presence of menthol (57%, 0%, or icilin (57%, 17%. Conclusions These findings demonstrate that δ-opioid receptor activation selectively inhibits inputs activated by icilin, whereas μ-opioid receptor activation has a more widespread effect on synaptic inputs to neurons in the superficial dorsal horn. These findings suggest that δ-opioids may provide a novel analgesic approach for specific, TRPA1-like mediated pain modalities.

  13. Anatomical study of superficial fascia and localized fat deposits of abdomen

    Directory of Open Access Journals (Sweden)

    Pramod Kumar

    2011-01-01

    Full Text Available Background: The development of liposuction and abdominoplasty has renewed interest in the anatomy of the localized fat deposits (LFD areas of the abdomen. This study aims at ascertaining the gross anatomy of superficial fascia and the localized fat deposits of abdomen. Materials and Methods: Eight adult cadavers (four males and four females were dissected. Attachments, number of layers of fascia and colour, shape and maximum size of the fat lobules in loin, and upper and lower abdomen were noted. Thickness of deep membranous layer of superficial fascia of upper abdomen and lower abdomen were measured by metal casing electronic digital calipers, with resolution being 10 μm. The independent sample t-test, ANOVA for comparison and Pearson coefficient for correlation were used. Results: Superficial fascia of the abdomen was multilayered in the midline and number of layers reduced laterally. The shape, size, color, and arrangement of fat lobules were different in different locations. The thickness of the fascia of the lower abdomen in males (mean 528.336 ± SE38.48 was significantly (P < 0.041 more than that in females. (Mean 390.822 ± SE36.24. Pearson correlation between thickness of the membranous layer of the upper and lower abdomen revealed moderately positive correlation (r=0.718; P<0.045. Conclusions: The LFD in the central region of the abdomen corresponds to the area of multilayered fascia with smaller fat lobules. The relatively thinner supporting fascia of the lower abdomen in females may be responsible for excessive bulges of the lower abdomen. The fat lobule anatomy at different sites under study was different.

  14. Tendon vibration attenuates superficial venous vessel response of the resting limb during static arm exercise

    Directory of Open Access Journals (Sweden)

    Ooue Anna

    2012-11-01

    Full Text Available Abstract Background The superficial vein of the resting limb constricts sympathetically during exercise. Central command is the one of the neural mechanisms that controls the cardiovascular response to exercise. However, it is not clear whether central command contributes to venous vessel response during exercise. Tendon vibration during static elbow flexion causes primary muscle spindle afferents, such that a lower central command is required to achieve a given force without altering muscle force. The purpose of this study was therefore to investigate whether a reduction in central command during static exercise with tendon vibration influences the superficial venous vessel response in the resting limb. Methods Eleven subjects performed static elbow flexion at 35% of maximal voluntary contraction with (EX + VIB and without (EX vibration of the biceps brachii tendon. The heart rate, mean arterial pressure, and rating of perceived exertion (RPE in overall and exercising muscle were measured. The cross-sectional area (CSAvein and blood velocity of the basilic vein in the resting upper arm were assessed by ultrasound, and blood flow (BFvein was calculated using both variables. Results Muscle tension during exercise was similar between EX and EX + VIB. However, RPEs at EX + VIB were lower than those at EX (P P vein in the resting limb at EX decreased during exercise from baseline (P vein at EX + VIB did not change during exercise. CSAvein during exercise at EX was smaller than that at EX + VIB (P vein did not change during the protocol under either condition. The decreases in circulatory response and RPEs during EX + VIB, despite identical muscle tension, showed that activation of central command was less during EX + VIB than during EX. Abolishment of the decrease in CSAvein during exercise at EX + VIB may thus have been caused by a lower level of central command at EX + VIB rather than EX. Conclusion Diminished central command induced by tendon

  15. The Effect of Superficial Damage on the Mechanical Properties of Flexible Composite Pipe for Transporting Hydrocarbons

    Directory of Open Access Journals (Sweden)

    Luz Amparo Quintero Ortiz

    2015-06-01

    Full Text Available This research examines the influence of outer sheath scratching on the mechanical properties of two systems of flexible composite pipe with nonmetal-reinforcement for transporting hydrocarbons. Tensile testing was carried out on notched rings, using Shore D hardness testing, and by physical characterization using cofocal microscopy on specimens with and without superficial damage. The tests were conducted following international technical standards and specifications. The results showed that variation in the depth and spacing of scratches affect the mechanical properties of the pipe, reducing ultimate tensile strength and leading to unit deformation. The effects are greater the deeper the scratches.

  16. Epidemiology, diagnosis and management of superficial mycoses: ours three years retrospective analysis

    Directory of Open Access Journals (Sweden)

    Barbara Pieretti

    2013-04-01

    Full Text Available Mycotic infections of the skin, hair and nails are disorder with high prevalence. Dermatophytes are the most frequently etiologic agents followed by yeasts and non-dermatophyte moulds. The geographic distribution is variable because of migration, lifestyle and socio-economics conditions. In this study, based on ours three years retrospective data analysis, we evaluate the epidemiology of etiologic agents, diagnosis and management of superficial mycoses. Our data and our experience suggest the importance of this microbiological diagnosis and the role of the Clinical Microbiologist to assess with Dermatologist and Primary Care Phyisician an appropriate diagnostic and therapeutic plan.

  17. Epidemiology of superficial and cutaneous mycosis in 5500 suspected patients in Tehran

    Directory of Open Access Journals (Sweden)

    Ayatollah Nasrollahi Omran

    2010-04-01

    Full Text Available "n Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:Arial; mso-bidi-theme-font:minor-bidi;} Background: Identification of the determatophytosis species and superficial mycosis agents may be useful in directing the survey for environmental and animal sources of infection to educate the danger of acquiring infections from infected persons and other animals. Based on this background the identification of cutaneous mycosis distribution was the main purpose."n"nMethods: From March 2005 to Feb 2009 we examined 5500 patients suspected to superficial and cutaneous mycosis referred to medical mycology labs in Tehran, Iran for Medical Mycology examination. Skin, hair and nail sampling were taken by scraping from patients and collected for diagnosis. Diagnosis was confirmed by direct microscopy and culture according to the mycology routine laboratory methods."n"nResults: A total of 2271 cases (41.3% suffered from superficial and cutaneous mycosis. The most common infections were dermatophytosis 1279 cases (56.31%, Tinea Versicolor 356 cases (15.47%, Erythersma 283 cases (12.46%, cutaneous candidiosis 243 cases (10.7% and sacrophytic cutaneous mycosis 110 cases (4.83%. Tichophyton mentagrophytes was the most common etiological agent with 198 cases (41.56%. The most common clinical type of cutaneous candidiasis was

  18. Medición de la dimensión fractal local en superficies

    OpenAIRE

    Silvetti, Andrea; Delrieux, Claudio

    2007-01-01

    La dimensión fractal local en superficies ha demostrado ser una técnica cuantitativa muy poderosa en el procesamiento de imágenes. Su utilización como descriptor local para diferentes propósitos de procesamiento es bastante extensa, y se destaca por ser un estimador notablemente robusto frente a los defectos y alteraciones presentes en la mayor parte de las tecnologías de adquisición de imágenes. Podemos mencionar aplicaciones de los estimadores fractales como descriptores locales para segmen...

  19. Carcinoma superficial multifocal do pênis: ênfase ao teste do azul de toluidina

    Directory of Open Access Journals (Sweden)

    Hélio Begliomini

    2001-06-01

    Full Text Available The author reports a case of penile multifocal superficial carcinoma in a white 66 years old male. The lesions on glans penis and prepuce were asymptomatic. Their appearence were plain reddish ulceration, irregular margins which became evident after circumcision. There was no palpable groin lymph node. The toluidine blue test was useful for guiding biopsies. A partial penectomy was undertaken with free surgical margins of tumor. In a follow-up of two years, penil erectile function is preserve with no tumor recurrence.

  20. Effect of Superficial Atmospheric Corrosion Upon the Internal Stresses in Structural Steel Elements

    OpenAIRE

    Monel Leiba; Budescu, M.; Elena Axinte; Elena-Carmen Teleman

    2006-01-01

    A research program is presented showing the stress status determined by the corrosion phenomenon inside a specimen of a structural steel element. Several stains are studied their diameters ranging from 1~mm to 6~mm and thickness of the corroded layer under 0.5~mm. The physical modeling is the result of testing in laboratory the phenomenon of superficial atmospheric corrosion and the numerical modeling was developed under a FEM program, ALGOR. A number of 3,200 finite elements of BRICK type we...

  1. Aortoiliac Artery Reconstruction Using Bilateral Reversed Superficial Femoral Veins for an Infected Abdominal Aortic Aneurysm

    Science.gov (United States)

    Hirai, Hanako; Yasuhara, Kiyomitsu; Hatori, Kyohei; Miki, Takao; Obayashi, Tamiyuki

    2016-01-01

    Surgical treatment of an infected abdominal aortic aneurysm (IAAA) is difficult and the ideal graft material is a subject of debate. A 60-year-old man with untreated diabetes mellitus was referred to our hospital presenting with fever and left lower abdominal pain. The patient was diagnosed with an IAAA by blood culture and computed tomography. We treated the patient surgically for the IAAA using bilateral reversed superficial femoral veins which were shaped into a bifurcated graft. No signs of recurrent infection or aneurysmal dilation were observed for 3 years after the procedure. PMID:27087879

  2. Qualidade da água superficial por meio de análise do componente principal

    OpenAIRE

    Nícolas Reinaldo Finkler; Denise Peresin; Jardel Cocconi1; Taison Anderson Bortolin; Adivandro Rech; Vania Elisabete Schneider

    2015-01-01

    Os fatores naturais e, em especial os antrópicos, que contribuem para a variação espacial e temporal da qualidade da água superficial nas bacias hidrográficas do município de Caxias do Sul foram determinados com uso de técnicas multivariadas de análise de dados. Foi utilizada a técnica de Análise do Componente Principal (ACP) como base para o estudo. O monitoramento foi realizado em 30 pontos de monitoramento no período compreendido entre setembro de 2012 a janeiro de 2014. A amostragem foi r...

  3. Adsorción de CH3OH sobre superficies modificadas de Ru (0001)

    OpenAIRE

    Palacio Rodríguez, Irene

    2012-01-01

    En este trabajo hemos realizado un estudio, mediante espectroscopías de infrarrojo y de electrones, de las especies adsorbidas en superficie y su evolución durante la descomposición de metanol sobre rutenio (0001). A continuación, se describen las principales contribuciones que hemos realizado a este amplio tema de estudio. Por una parte, la investigación aquí descrita se ha realizado bajo condiciones que hemos tratado que sean cercanas a las existentes en la catálisis real. El rango de presi...

  4. Superficial deposits in northeast flank of Sierras Australes (Provincia de Buenos Aires, Republica Argentina)

    International Nuclear Information System (INIS)

    Pleistocene and Holocene superficial deposits, which have been recognized in an area of 1500 km2 in the northeast flank of Sierras Australes, are characterized. In divide they are underlain by silts and siltstone which are called Sediments Pampeanas. There, a lower sequence, consisting mainly of aeolian sediments (loess) with scarce fluvial deposits and diamictons, was recognized. In some places an upper sequence that is product of aeolian and anthropogenic activity, was also recognized. In the valley sequences, the loess deposits can not only be underlain by fluvial sediments but can also overlain them. The more recent fluvial deposits which have eroded loess sequences are of the post conquest age

  5. A Technique of Superficial Medial Collateral Ligament Reconstruction Using an Adjustable-Loop Suspensory Fixation Device.

    Science.gov (United States)

    Deo, Shaneel; Getgood, Alan

    2015-06-01

    This report describes superficial medial collateral ligament reconstruction of the knee using a novel method of graft fixation with the ACL Tightrope RT (Arthrex, Naples, FL). After tibial fixation with either a standard interference screw or staple, femoral fixation of the semitendinosus tendon is performed with the adjustable-loop suspensory fixation device, which allows for both initial graft tensioning and re-tensioning after cyclical knee range of motion. This provides the ability for the graft to accommodate for resultant soft-tissue creep and stress relaxation, thereby allowing for optimal soft-tissue tension and reduction in laxity at the end of the procedure. PMID:26258041

  6. Expression of matrix metalloproteinases 2 and 9 in human gastric cancer and superficial gastritis

    Institute of Scientific and Technical Information of China (English)

    Clara; Luz; Sampieri; Sol; de; la; Pea; Mariana; Ochoa-Lara; Roberto; Zenteno-Cuevas; Kenneth; León-Córdoba

    2010-01-01

    AIM:To assess expression of matrix metalloproteinases 2(MMP2)and MMP9 in gastric cancer,superficial gastritis and normal mucosa,and to measure metalloproteinase activity.METHODS:MMP2 and MMP9 mRNA expression was determined by quantitative real-time polymerase chain reaction.Normalization was carried out using three different factors.Proteins were analyzed by quantitative gelatin zymography(qGZ).RESULTS:18S ribosomal RNA(18SRNA)was very highly expressed,while hypoxanthine ribosyltransferase-1(HPRT-1)was mode...

  7. VARIACIÓN DE LA DUREZA SUPERFICIAL DE LOS RODILLOS RADIALES DE TRANSPORTADORES YACOBI.

    Directory of Open Access Journals (Sweden)

    Benigno Leyva de la Cruz

    2014-06-01

    Full Text Available Uno de los problemas medulares que ha afectado la productividad de las empresas en general, es el deterioro de las piezas de sus equipamientos tecnológicos por desgastes. En tal sentido, el estudio del comportamiento de la dureza superficial de dichos componentes durante su vida útil es de vital importancia, para poder recomendar una estructura eficiente, en cuanto al material y tratamiento a seleccionar. En este trabajo se realizó un estudio sobre la variación de la dureza superficial que experimentan los rodillos radiales de transportadores yacobi durante su período de explotación. Se determinó la influencia que tienen sobre la dureza el efecto combinado de la temperatura, la fuerza, el número de revoluciones, y el régimen de enfriamiento en el acero AISI 1045, laminado y templado. Se efectuó la determinación de la dureza superficial de 12 rodillos antes y después de la puesta en explotación con un durómetro portátil modelo 316 con rango de medición de 20 – 65 HRC y apreciación 1,5 puntos, asegurando la condición de normalidad para un nivel de confianza del 95 %. Los resultados obtenidos indicarón que la dureza de los rodillos son 47,5 HRC y 41,67 HRC antes y después de la explotación respectivamente. Además, el análisis de variancia efectuado refiere que existe diferencia significativa entre los valores de la dureza superficial antes y después de la puesta en explotación, lo que indicó la necesidad de realizar un análisis minucioso de las causas que están provocando dicha variación para mejorar la calidad del proceso.

  8. Superficial peroneal nerve paresis in a dancer caused by a midfoot ganglion: case report.

    Science.gov (United States)

    Martin, Darrell; Dowling, Jamie; Rowan, Fiachra; Casey, Mary; O'Grady, Paul

    2015-06-01

    Ganglion cysts are common benign masses, usually occurring in the hands and feet. This report describes the case of a young female Irish dancer who presented with paresthesia of her foot due to a ganglion in near proximity to the superficial peroneal nerve. Midfoot ganglia in young girls engaged in Irish dance can limit their ability to participate. This pathology requires further epidemiological studies to investigate its prevalence. In the event of failed conservative management, surgical intervention to excise the cyst and decompress the nerve is an effective treatment to facilitate return to dancing. PMID:26045399

  9. Analysis of superficial fluorescence patterns in nonmelanoma skin cancer during photodynamic therapy by a dosimetric model

    Science.gov (United States)

    Salas-García, I.; Fanjul-Vélez, F.; Arce-Diego, J. L.

    2016-03-01

    In this work the superficial fluorescence patterns in different nonmelanoma skin cancers and their photodynamic treatment response are analysed by a fluorescence based dosimetric model. Results show differences of even more than 50% in the fluorescence patterns as photodynamic therapy progresses depending on the malignant tissue type. They demonstrate the great relevance of the biological media as an additional dosimetric factor and contribute to the development of a future customized therapy with the assistance of dosimetric tools to interpret the fluorescence images obtained during the treatment monitoring and the differential photodiagnosis.

  10. Anesthetic management of a patient with Kimura′s disease for superficial parotidectomy

    Directory of Open Access Journals (Sweden)

    Dalim Kumar Baidya

    2011-01-01

    Full Text Available Kimura′s disease is a rare form of chronic eosinophilic inflammatory disease with vascular proliferation involving salivary gland, skin, lymph node, and kidney. Important anesthetic concerns include increased surgical bleeding due to its vascular nature, airway involvement by the mass leading to a possible difficult airway, allergic symptoms associated with high eosinophil count and elevated IgE level and nephrotic syndrome due to involvement of kidney by the inflammatory process. There is paucity of information in the literature on the anesthetic management of Kimura′s disease. We describe the anesthesia technique and review the literature of such a case posted for superficial parotidectomy.

  11. Primary temporal region squamous cell carcinoma diagnosed by a superficial temporal artery biopsy

    DEFF Research Database (Denmark)

    Andersen, S A W; Kiss, K

    2015-01-01

    BACKGROUND: Superficial temporal artery biopsy is a frequent procedure performed in the diagnosis of giant cell arteritis. METHODS AND RESULTS: An otherwise healthy 69-year-old man presented with 2months complaint of right temporal region pain. Giant cell arteritis was suspected and a temporal...... biopsies and lymphoma is the most common malignancy reported. In this rare case, the patient had right temporal pain explained by perineural invasion of a primary SCC in the right temporal region, which was treated with surgical excision guided by perioperative fresh frozen histology....

  12. Colgajos de perforantes de las arterias epigástricas inferiores profunda y superficial Deep and superficial inferior epigastric artery perforator flaps

    Directory of Open Access Journals (Sweden)

    A. R. Gagnon

    2006-12-01

    Full Text Available Con el desarrollo de los colgajos miocutáneos de recto abdominal (TRAM, el abdomen inferior ha sido reconocido como la principal área dadora de tejidos autólogos de alta calidad, especialmente útiles en reconstrucción mamaria. Más recientemente la habilidad para obtener componentes adiposocutáneos similares sin sacrificar el músculo recto ha revolucionado el campo de la Cirugía Reconstructiva. El advenimiento de los colgajos de perforantes ha permitido a los cirujanos plásticos lograr los mismos buenos resultados estéticos que con los colgajos miocutáneos tradicionales, pero con un considerable descenso en la morbilidad del área donante. Con los colgajos de perforantes de la arteria epigástrica inferior profunda (DIEP y de la arteria epigástrica inferior superficial (SIEA, los pacientes han incrementado sus opciones de reconstrucción. Este artículo revisa la anatomía quirúrgica de la pared abdominal relativa a los colgajos SIEA y DIEP. Se explican detalladamente los pasos principales para la preparación preoperatoria, la técnica quirúrgica y los cuidados postoperatorios. Se discuten las ventajas y desventajas y se presen- tan los trucos técnicos que pueden ayudar a mejorar el resultado final. Además se ilustran con ayuda de casos clínicos las indicaciones típicas y atípicas.Following the development of the transverse rectus abdominis myocutaneous (TRAM flap, the lower abdomen has been recognized as a prime source of high quality autogenous tissue, especially useful in breast reconstruction. More recently, the ability to harvest a similar adipocutaneous component without sacrifice of the rectus muscle has revolutionized the field of reconstructive surgery. The advent of perforator flaps has allowed plastic surgeons to achieve the same highly esthetic results as with the former myocutaneous flaps while significantly decreasing the donor site morbidity. With the deep inferior epigastric artery perforator (DIEP flap and

  13. Aleación superficial de superaleaciones base níquel mediante láser

    Directory of Open Access Journals (Sweden)

    Rodríguez, G. P.

    1998-04-01

    Full Text Available Ni based superalloys present a high oxidation resistance at high temperature as well as good mechanical properties. But new tecnhology developments forcé to research in this materials to improve their properties at high temperature. In this work, two Ni based superalloys (Nimonic 80A and Inconel 600 were surface alloyed with aluminium using a high power laser. SEM and EDX were used to study the microstructure of the obtained coatings. Alloyed specimens were tested at 1.273 K between 24 and 250 h. Results showed the generation of a protective and continuous coating of alumina on the laser treated specimens surface that can improve oxidation resistance.

    Las superaleaciones base níquel presentan una elevada resistencia a la oxidación a alta temperatura, así como excelentes propiedades mecánicas. Los nuevos desarrollos tecnológicos (condiciones cada vez más agresivas obligan a una casi continua modificación de dichas aleaciones. En el presente trabajo, dos superaleaciones base níquel (Nimonic 80A e Inconel 600 se alean superficialmente con aluminio utilizando un láser de alta potencia. Se estudia la microestructura de la capas obtenidas mediante SEM y EDX. Se realizan ensayos de oxidación a 1.273 K sobre las probetas aleadas y sobre el material base durante tiempos variables entre 24 y 250 h. Los resultados indican la formación de una capa protectora de alúmina sobre las probetas aleadas que puede incrementar la resistencia a la oxidación.

  14. Status of the valves in the superficial and deep venous system in chronic venous disease.

    Science.gov (United States)

    van Bemmelen, P S; Bedford, G; Beach, K; Strandness, D E

    1991-06-01

    The relationship between the functional status of the venous valves in the superficial and deep veins and ulceration was evaluated in 42 patients. Twenty-five patients had ulcers, 12 of these patients had a history of previous deep venous thrombosis and 13 of these patients denied such an event. Seventeen patients had normal ankle skin, 10 of these patients had a documented history of deep vein thrombosis and seven of these patients had varicose veins only. An ultrasonic duplex scanner was used to document the presence of reflux in all segments of the superficial and deep system. In the entire group of 25 limbs with ulceration, valvular incompetence was noted in 22 limbs at levels involving segments that communicated with the ulcer-bearing area. Of the 17 limbs with normal ankle skin, in only two instances was a single segment of posterior tibial vein in midcalf found to be incompetent. For those patients with normal ankle skin and a history of varicose veins, the deep veins below the common femoral vein level were always competent. PMID:2042091

  15. Expression of AQP3 gene in chronic atrophic and chronic superficial gastritis patients

    Directory of Open Access Journals (Sweden)

    Shijun Zhang

    2007-12-01

    Full Text Available BACKGROUND: Most studies about aquaporin 3 (AQP3 in the gastrointestinal tract were carried out on both in vivo and in vitro. The role of AQP3-mediated water transport in human gastrointestinal tract is still unclear. Our aim in this study was to explore the expression of AQP3 gene in chronic atrophic gastritis (CAG and chronic superficial gastritis (CSG atients and to determine its possible function in the development of gastritis.
    METHODS: Twenty-two outpatients diagnosed as CSG and 12 outpatients diagnosed as CAG were selected randomly. Ten cases of healthy individuals were selected as normal control group. In all cases, AQP3 gene expression of gastric mucosa was detected by fluorescence quantitative polymerase chain reaction (FQ-PCR.
    RESULTS: The AQP3 gene expression was significantly higher in gastric mucosa of CSG and healthy individuals than that in CAG (P<0.01. However, there was no significant difference in the AQP3 gene expression between helicobacter pylori positive patients and helicobacter pylori negative patients (P>0.05.
    CONCLUSIONS: AQP3 expression might play certain role in the occurrence and development of gastritis.
    KEY WORDS: Aquaporin 3, chronic superficial gastritis, chronic atrophic gastritis.

  16. Application of medical physical culture at extensive superficial burns of the I–II degree

    Directory of Open Access Journals (Sweden)

    Vjacheslav Meleshkov

    2015-10-01

    Full Text Available Purpose: to study and prove purpose of medical physical culture at extensive superficial burns of the I–II degree for normalization of exchange processes, the prevention of the developments of stagnation connected with the compelled decrease in physical activity. Materials and Methods: analysis and generalization of scientific and methodical literature. Results: the main means of physical rehabilitation – medical physical culture is considered; its application at treatment of patients with extensive superficial burns of the I–II degree is proved; techniques of medical physical culture in the period of little burn shock and in the period of a sharp toksemy are described in detail. Conclusions: it is established that occupation duration remedial gymnastics depends on a condition of the patient and objectives. In each occupation the all-strengthening, breathing and special exercises, as a rule, have to be applied. The most important feature of a technique of occupations at a burn disease is need of repeated performance during the day of the special exercises directed on prevention or elimination of malfunction of the musculoskeletal device

  17. Superficial Spreading Melanoma „Slumbered“ Behind the Shadow of Onychomycosis

    Directory of Open Access Journals (Sweden)

    Trayanova E.

    2015-05-01

    Full Text Available Malignant melanoma is the most aggressive form of cutaneous cancer. Due to the continuously increasing rate of newly detected cases each year and because of its particular low survival rate, the scientific interest in this type of neoplasia is constantly growing. Sun exposure is identified as the major etiologic factor for malignant transformation of the melanocytes. According to the WHO, malignant melanoma is divided into four main groups, as the superficial spreading form is defined as the most “gentle” among them. The name of this subspecies does not have to “drowse” the attention of dermatologists considering the possible metastasic risk, even at a later stage. Due to lack of subjective complaints, patients do not seek active consultation on this occasion, as this type of lesions often remain missed within the clinical examination. Early diagnosis, however, as well as early surgical removal is the key to increasing the survival rate of the patients. We present a case of a 88 year-old female patient consulted with dermatologist on occasion of severe onychomycosis, as a pigment lesion on the anterior surface of the right leg. Clinically and dermatoscopically suspected superficial spreading melanoma was detected within the examination.

  18. Study of the superficial ozone concentrations in the atmosphere of Comunidad de Madrid using passive samplers

    Directory of Open Access Journals (Sweden)

    D. Galán Madruga

    2001-06-01

    Full Text Available The ozone is a secondary atmospheric pollutant which is generated for photochemical reactions of volatil organic compounds (VOC’s and nitrogen oxides (NOx. In Spain the ozone is a big problem as a consequence of the solar radiation to reach high levels. Exposure over a period of time to elevated ozone concentrations can cause damage in the public health and alterations in the vegetation.The aim of this study is to carry out the development and validation of a measurement method to let asses the superficial ozone levels in the Comunidad de Madrid, by identifing the zones more significants, where to measure with UV photometric monitors (automatics methods this pollutant and where the health and the vegetation can be affected. To such effect, passive samplers are used, which have glass fiber filters coated with a solution of sodium nitrite, potassium carbonate, glycerol and water. The nitrite ion in the presence of ozone is oxidized to nitrato ion, which it is extrated with ultrapure water and analyzed for ion chromatography, by seen proportional to the concentration existing in the sampling point.The results of validation from field tests indicate a excellent correlation between the passive and the automatic method.The higher superficial ozone concentrations are placed in rural zones, distanced of emission focus of primary pollutants (nitrogen oxides and volatil organic compounds... principally in direction soutwest and northwest of the Comunidad of Madrid.

  19. Acquisition and elaboration of superficial three-dimensional images in plastic and reconstructive surgery: Applications

    Directory of Open Access Journals (Sweden)

    Alfano C

    2005-01-01

    Full Text Available Since 1970, as computed axial tomography machines became easily available and became more sophisticated, image acquisition techniques and analysis improved, developed rapidly and became very useful in medical diagnosis. Today it is possible to examine either the anatomic and functional aspects of deep body organs and tissues including all the minute details as well as their morphological relations with superficial structures. Through precise graphic elaboration programs we can obtain information about spatial relations which was not possible using simply classical clinical examination. It is possible, for example, to "point out" an area of interest from its anatomic context, to carry out virtual cleavage of planes and to measure volumes and distances. New developments in image acquisition systems permit transfer of three-dimensional data directly from existing objects. The three -dimensional computerized axial tomography for deep structures, and the laser scanners for superficial structure, quickly furnish (1-3 seconds for the laser scanners useful information to plan the surgical operation. When analysing 3D-imaging techniques it is important to appreciate their utility for the planning and the follow up of surgery, particularly for the head and thorax, where the three dimensional evaluation is better than the classic double dimensional system that is incomplete and difficult to interpret. In the future, these systems will be important for the best aesthetic and functional results and above all for reducing the surgical time.

  20. Genome-Wide DNA Methylation Changes between the Superficial and Deep Backfat Tissues of the Pig

    Directory of Open Access Journals (Sweden)

    Xuewei Li

    2012-06-01

    Full Text Available Adipose tissue is not only a storage organ involved in fuel metabolism, but also an endocrine organ involved in the regulation of insulin sensitivity, thermogenesis, immunity, and inflammation. There are anatomical, cellular, molecular and physiological differences among adipose tissues deposited in different body sites. However, current understanding of the intrinsic differences between the sub-compartments of the subcutaneous adipose tissue remains rudimentary. Here, we analyzed the genome-wide DNA methylation differences between the porcine superficial and deep backfat tissues using methylated DNA immunoprecipitation combined with high-throughput sequencing. We show that the genes with differentially methylated regions in their promoter are mainly involved in the processes of “lipid metabolism” and “regulation of immune-related cytokines”. Compared with the deep backfat tissue, the promoters of genes related to the ‘positive regulation of cytokine production’ were significantly hypermethylated in the superficial backfat tissue, which reflects the intrinsic functional and metabolic differences between the sub-compartments of the subcutaneous adipose tissue. This study provides epigenetic evidence for functionally relevant methylation differences between different layers of porcine backfat tissues.

  1. Assessment of groundwater vulnerability by combining drastic and susceptibility index: Application to Annaba superficial aquifer (Algeria)

    Science.gov (United States)

    Sedrati, Nassima; Djabri, Larbi; Chaffai, Hicham; Bougherira, Nabil

    2016-07-01

    Groundwater pollution due to anthropogenic activities is one of the major environmental problems in urban and industrial areas. The aim of this work is to propose a new integrated methodology to assess actual and forecasted groundwater vulnerability by combining Drastic and susceptibility index. The contamination susceptibility index (SI) at a given location was calculated by taking the product of the vulnerability DRASTIC index (VI) and the quality index (QI): SI=VI x QI. The superficial aquifer of Annaba plain was the study case proposed for the application of this methodology. The study revealed that the area with Very High vulnerability would increase 73 % in this superficial layer. This result can be explained by the susceptibility index map shows both hydrogeological and hydrochemical data related to the contamination problem including areas that should be taken into consideration during water management planning. The index map indicates that the most susceptible groundwater is occupies the majority of the study area. The validity of the DRASTIC and the susceptibility index methods, verified by comparing the distribution of some pollutants (Daouad, 2013) in the groundwater and the different vulnerability classes, shows a high contamination that affect the water quality in study areas.

  2. Superficially, longer, intermittent ozone theraphy in the treatment of the chronic, infected wounds.

    Science.gov (United States)

    Białoszewski, Dariusz; Kowalewski, Michał

    2003-10-30

    Background. Ozone therapy - i.e. the treatment of patients by a mixture of oxygen and ozone - has been used for many years as a method ancillary to basic treatment, especially in those cases in which traditional treatment methods do not give satisfactory results, e.g. skin loss in non-healing wounds, ulcers, pressure sores, fistulae, etc. Material and methods. In the Department of Phisiotherapy of the Medical Faculty and the Department of the Orthopedics and Traumatology of the Locomotor System at the Medical University of Warsaw in the period from January 2001 until November 2002, 23 patients with heavy,chronic, antibiotic resistants septic complications after trauma, surgical procedures and secundary skin infetions were treated with ozone. The ozone therapy was administered using an authorial technique of superficially, longer, intermittent ozone application. Results. In the wounds of the all experienced patients the inhibition of septic processes and wound healing was much faster than normal. Conclusions. Our data confirm the advantages wich result from the technique of superficially, longer, intermittent ozone theraphy in combined treatment for septic complications in the soft tissue, especially in the locomotor system. These technique makes posttraumatic infections and promotes quicker healing of post-surgical and post-traumal complications - chronic septic infections. This method also lowers the cost of antibiotic therapy and is sometimes the only available auxiliary technique to support surgical procedures. PMID:17679848

  3. Superficial peroneal neurocutaneous flap based on an anterior tibial artery perforator for forefoot reconstruction.

    Science.gov (United States)

    Wang, Chun-Yang; Chai, Yi-Min; Wen, Gen; Han, Pei; Cheng, Liang

    2015-06-01

    The distally based superficial peroneal neurocutaneous (SPNC) island flap has been widely used for foot reconstruction. It is based on the descending branch of the peroneal artery perforator. However, damage to the perimalleolar vascularization or anatomic variations of the descending branch often causes flap necrosis. Because septocutaneous perforators from the anterior tibial artery participate in the vascular network of superficial peroneal nerve in the distal lower leg, a modified SPNC flap is designed based on the anterior tibial artery perforator. Seven patients with soft tissue defect over the forefoot were treated by this modified technique. Six patients had accompanied injuries at the lateral perimalleolar region, and 1 patient had an anatomic variation of the descending branch of the peroneal artery perforator. The size of defect ranged from 12 × 5 to 15 × 9 cm. All 7 flaps survived completely without complications. The size of the flaps ranged from 13 × 6 to 16 × 10 cm. No severe venous congestion occurred. The mean follow-up was 9.4 months (range, 6-14 months). All patients were satisfied with the texture and color of the flaps. Two patients complained about the thickness of the flaps, but did not want further operation. The donor sites healed uneventfully and no painful neuroma occurred. In conclusion, the modified SPNC flap based on an anterior tibial artery perforator is a feasible salvage procedure when the traditional design is unreliable. It can provide sufficient and superior coverage for large forefoot defect. PMID:25969973

  4. Evaluation of the litcit software for thermal simulation of superficial lasers such as hair removal lasers

    Directory of Open Access Journals (Sweden)

    Shirkavand A

    2007-01-01

    Full Text Available Background and Objectives : In this study, we evaluate LITCIT software for its application as a thermal simulation software for superficial hair removal laser systems. Materials and Methods: Two articles were used as our references. Complete information regarding the tissues, such as optical/thermal properties and geometrical modeling and also the laser systems such as wavelength, spot size, pulse duration and fluence were extracted from these texts. Then, this information regarding the tissues and systems was entered into the LITCIT simulation software. Further, we ran the program and saved the results. Finally, we compared our results with the results in references and evaluated the. Results : Output results of the LITCIT show that they are consistent with the results of references that were calculated with a different thermal modeling. Such a small average error shows the accuracy of the software for simulation and calculating the temperature. Conclusions : This simulating software has a good ability to be used as a treatment planning software for superficial lasers. Thus, it can be used for the optimization of treatment parameters and protocols.

  5. Hydric properties of some iberian ornamental granites with different superficial finishes: a petrophysical interpretation

    Directory of Open Access Journals (Sweden)

    Rojo, A.

    2003-03-01

    Full Text Available Some physical properties of three ornamental granites with different superficial finishes (polished, sawn and flamed were quantified by standard tests. These granites are commercially known as Rosa Porrino, Rosavel and Blanco Alcazar. The determined properties were: density, open porosity, water absorption, capillarity, evaporation, vapour absorption and water vapour permeability. The values of the hydric properties in the studied granites fundamentally depended on their textural characteristics, mainly grain size, micro cracking network and open porosity, and, to a lesser extent, on their superficial finish.

    El estudio analiza las diferencias en el comportamiento hídrico de tres granitos con diferentes acabados superficiales: pulido, corte de sierra y chorro de fuego. Estos granitos se comercializan con los nombres de Rosa Porrino, Rosavel y Blanco Alcázar. Las propiedades determinadas han sido: densidad, porosidad abierta, absorción libre de agua, absorción de vapor de agua, absorción de agua por capilaridad, evaporación y permeabilidad al vapor de agua. Los valores de las propiedades hídricas determinadas dependen fundamentalmente de las características texturales: tamaño de grano, microfisuras y porosidad abierta y, en menor medida, de los acabados superficiales.

  6. Extended field-of-view sonography: evaluation of the superficial lesions

    International Nuclear Information System (INIS)

    To evaluate the usefulness of extended-field-of-view 2-dimensional ultrasonography technique in superficial lesions. During a 6-month period, 44 patients with superficial lesions on various parts of their bodies were evaluated with extended-field-of-view ultrasonography in addition to routine traditional 2-dimensional ultrasonography. If the diagnosis could not be made without the extended-field-of-view images, it was considered diagnostic. The radiologist decided if the extended-field-of-view ultrasonography helped spatial orientation, communicate findings, or compare the contralateral side in a single image, or if it was useful for follow-up evaluation. By using extended-field-of-view imaging including the surrounding anatomy, 22 musculoskeletal, 8 scrotal, 8 thyroid, 2 breast, and 4 abdominal wall lesions were documented successfully as a single image. Nevertheless, no new cases were diagnosed solely based on the extended-field-of-view images. Extended-field-of-view ultrasonography was considered helpful for spatial orientation in 25 cases (56.8%), for comparing the contralateral side in 16 cases (36.3%), and for communicating findings in 20 cases (45.4%). It was useful for follow-up evaluation in 13 cases (29.5%). None of the extended-field-of-view images was diagnostic. However, they did provide valuable additional information and better documentation of the lesions. (author)

  7. Proton radiotherapy for superficial tumors and ocular malignancies by NIRS medical cyclotron

    International Nuclear Information System (INIS)

    Proton radiotherapy has been started in November 1979. The characteristics of proton beam is very sharply definited dose distribution which means no radiation exposure beyond the bragg peak and very few side scatter in collimated beam. The beam range of 70 MeV proton is only 38 mm in the tissue, so superficial tumors or ocular malignancies are indicated for the treatment. The confirmation of the correct positioning, re-producibility of the set up and immobilization during the irradiation time are the most important factors. Total 60 patients were treated between 1979 and 1988. Clinical results were as follows: 1) super-ficial tumors: 40 patients were treated, 67.5% of them were locally controlled by irradiation alone and 30% were controlled with salvage surgery. Skin reaction after proton irradiation was mild to moderate in general, in spite of a relatively big radiation dose. 2) ocular malignancies: 20 patients (17 of malignant melanoma, 3 of retino blastoma) were treated. In malignant melanoma, 2 of local control, 10 of tumor regression, 1 of recurrent and 4 of severe radiation retinopathy were observed. There was no radiation cataract, however, 3 of eyes were enucleated due to glaucoma or recurrence. In retinoblastoma, 5 tumors were treated, 3 of them were locally controlled, however, 2 of them were residual or recurrent and were retreated by HPD treatment method. Two of radiation retinopathy were observed in spite of relatively low radiation dose, however, these was no radiation cataract. (author)

  8. Bioavailability of Organic Matter in the Superficial Sediment of Guanabara Bay, Rio de Janeiro, Brazil

    Directory of Open Access Journals (Sweden)

    José Augusto Pires Bitencourt

    2011-01-01

    Full Text Available Thirty superficial sediment samples were collected in Guanabara Bay in order to identify new trophic state and environmental quality descriptors for coastal systems. A biochemical approach was used for analyzing the quality and quantity of sedimentary organic matter and metabolic bacterial activity. The samples were analyzed for particle size; organic matter, protein, carbohydrate, lipid, biopolymeric carbon, and bioavailable carbon levels; and bacterial metabolic activity. The results show a homogeneous spatial distribution for the anaerobic bacteria web and for biopolymers (carbohydrates>lipids>protein. The NE area of the bay displayed sediment lipid levels above 1 mg/g, indicative of organic sewage input. Spatial distribution of the superficial sediments in relation to other variables was not significant (p>0.05. Biopolymers and labile organic matter showed a significant correlation with the average particle size of 80% of the fine particles. Despite the availability of labile organic matter, under the form of biopolymeric carbon, only 50% of the carbon was available to the trophic web. The bacterial consortia formed by sulfate reducing and denitrifying bacteria sustain the benthic trophic food web in Guanabara Bay.

  9. Imaging Features of Superficial and Deep Fibromatoses in the Adult Population

    Directory of Open Access Journals (Sweden)

    Eric A. Walker

    2012-01-01

    Full Text Available The fibromatoses are a group of benign fibroblastic proliferations that vary from benign to intermediate in biological behavior. This article will discuss imaging characteristics and patient demographics of the adult type superficial (fascial and deep (musculoaponeurotic fibromatoses. The imaging appearance of these lesions can be characteristic (particularly when using magnetic resonance imaging. Palmar fibromatosis demonstrates multiple nodular or band-like soft tissue masses arising from the proximal palmar aponeurosis and extending along the subcutaneous tissues of the finger in parallel to the flexor tendons. T1 and T2-weighted signal intensity can vary from low (higher collagen to intermediate (higher cellularity, similar to the other fibromatoses. Plantar fibromatosis manifests as superficial lesions along the deep plantar aponeurosis, which typically blend with the adjacent plantar musculature. Linear tails of extension (“fascial tail sign” along the aponeurosis are frequent. Extraabdominal and abdominal wall fibromatosis often appear as a heterogeneous lesion with low signal intensity bands on all pulse sequences and linear fascial extensions (“fascial tail” sign with MR imaging. Mesenteric fibromatosis usually demonstrates a soft tissue density on CT with radiating strands projecting into the adjacent mesenteric fat. When imaging is combined with patient demographics, a diagnosis can frequently be obtained.

  10. Prognostic factors for primary superficial transitional cell carcinoma of the bladder: a retrospective cohort study

    Institute of Scientific and Technical Information of China (English)

    YANG Tu-bao; ZENG Fu-hua; SUN Zhen-qiu

    2006-01-01

    Background Previous studies showed that the prognostic factors for superficial transitional cell carcinoma of the bladder varied with the findings of different cohorts. Few multivariate analyses of prognostic factors for superficial bladder tumors have been reported in China and bladder preservation as a prognostic index of superficial bladder tumors is limited and scarce in Chinese patients. This study was conducted to analyze a group of risk factors for prognostic outcomes for patients with primary superficial transitional cell carcinoma of the bladder.Methods Between January 1980 to December 2000, 198 patients [172 men and 26 women; mean age (52.98±11.28) years] with primary superficial transitional cell carcinoma who were pathologically classified as Ta or T1 in Hunan Provincial Tumor Hospital (Changsha, China) were enrolled in this study. Surgical methods included local resection and electric coagulation of bladder tumors, transurethral resection of bladder tumors and partial cystectomy. After initial surgical treatment, patients were followed through a cystoscopy every three months during the first two years and every six months thereafter in the design of retrospective cohort. Survival analysis was performed to analyze risk factors of the prognostic outcomes for transitional cell carcinoma of the bladder.Canonical correlation analysis was conducted to present and interpret synthetically the multi-correlation between all kinds of prognostic outcomes and risk factor in multiply dimensions.Results The average follow-up period was (6.65±4.74) years. Assessments at three, five, and 10 years showed recurrence rates, respectively, of (28.32 ± 3.45)%, (35.31 ± 3.83)%, and (42.48 ± 4.40)%; progression rates of (8.89±2.14)%, (15.16±2.94)%, and (23.88±4.19)%; bladder-preservation rates of (94.68± 1.74)%, (93.87±1.91)%, and (91.51±2.49)%; metastasis rates of (8.25±2.05)%, (11.24±2.47)%, and (28.94±4.93)%; and cancer-related survival rates of (95.02 ±1

  11. Diagnostic utility of narrow-band imaging endoscopy for pharyngeal superficial carcinoma

    Institute of Scientific and Technical Information of China (English)

    Noboru Yoshimura; Kenichi Goda; Hisao Tajiri; Yukinaga Yoshida; Takakuni Kato; Yoichi Seino; Masahiro Ikegami; Mitsuyoshi Urashima

    2011-01-01

    AIM: To investigate the endoscopic features of pha-ryngeal superficial carcinoma and evaluate the utility of narrow-band imaging (NBI) for this disease.METHODS: In the present prospective study, 335 patients underwent conventional white light (CWL) en-doscopy and non-magnified/magnified NBI endoscopy, followed by an endoscopic biopsy, for 445 superficial lesions in the oropharynx and hypopharynx. The macroscopic appearance of superficial lesions was categorized as either elevated (< 5 mm in height), flat, or depressed (not ulcerous). Superficial carcinoma (SC) was defined as a superficial lesion showing high-grade dysplasia or squamous cell carcinoma on histology. The color, delineation, and macroscopic appearances of the lesions were evaluated by CWL endoscopy. The ratio of the brownish area/intervascular brownish epithelium (IBE), as well as microvascular proliferation, dilation, and irregularities, was determined by non-magnified/ magnified NBI endoscopy. An experienced pathologist who was unaware of the endoscopic findings made the histological diagnoses. By comparing endoscopic findings with histology, we determined the endoscopic features of SC and evaluated the diagnostic utility of NBI.RESULTS: The 445 lesions were divided histologically into two groups: a non-SC group, including non-neo-plasia and low-grade dysplasia cases, and an SC group. Of the 445 lesions examined, 333 were classified as non-SC and 112 were classified as SC. There were no significant differences in age, gender, or the location of the lesions between the patients in the two groups. The mean diameter of the SC lesions was significantly greater than that of non-SC lesions (11.0 7.6 mm vs 4.6 3.6 mm, respectively, P < 0.001). Comparisons of CWL endoscopy findings for SC and non-SC lesions by univariate analysis revealed that the incidence of redness (72% vs 41%, respectively, P< 0.001) and a flat or depressed type of lesion (58% vs 44%, respectively, P = 0.013) was significantly higher in

  12. Superficial Velocity Effects on HZ-PAN and AgZ-PAN for Kr/Xe Capture

    Energy Technology Data Exchange (ETDEWEB)

    Welty, Amy Keil [Idaho National Lab. (INL), Idaho Falls, ID (United States); Garn, Troy Gerry [Idaho National Lab. (INL), Idaho Falls, ID (United States); Greenhalgh, Mitchell Randy [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2016-04-01

    Nearly all previous testing of HZ-PAN and AgZ-PAN was conducted at the same flow rate in order to maintain consistency among tests. This testing was sufficient for sorbent capacity determinations, but did not ensure that sorbents were capable of functioning under a range of flow regimes. Tests were conducted on both HZ-PAN and AgZ-PAN at superficial velocities between 20 and 700 cm/min. For HZ-PAN, Kr capacity increased from 60 mmol/kg to 110 mmol/kg as superficial velocity increased from 21 to 679 cm/min. Results for AgZ-PAN were similar, with capacity ranging from 72 to 124 mmol/kg over the same range of superficial. These results are promising for scaling up to process flows, demonstrating flexibility to operate in a broad range of superficial velocities while maintaining sorbent capacity. While preparing for superficial velocity testing it was also discovered that AgZ-PAN Xe capacity, previously observed to diminish over time, could be recovered with increased desorption temperature. Further, a substantial Xe capacity increase was observed. Previous room temperature capacities in the range of 22-25 mmol Xe/kg AgZ-PAN were increased to over 60 mmol Xe/kg AgZ-PAN. While this finding has not yet been fully explored to optimize activation and desorption temperatures, it is encouraging.

  13. A biphasic finite element study on the role of the articular cartilage superficial zone in confined compression.

    Science.gov (United States)

    Guo, Hongqiang; Maher, Suzanne A; Torzilli, Peter A

    2015-01-01

    The aim of this study was to investigate the role of the superficial zone on the mechanical behavior of articular cartilage. Confined compression of articular cartilage was modeled using a biphasic finite element analysis to calculate the one-dimensional deformation of the extracellular matrix (ECM) and movement of the interstitial fluid through the ECM and articular surface. The articular cartilage was modeled as an inhomogeneous, nonlinear hyperelastic biphasic material with depth and strain-dependent material properties. Two loading conditions were simulated, one where the superficial zone was loaded with a porous platen (normal test) and the other where the deep zone was loaded with the porous platen (upside down test). Compressing the intact articular cartilage with 0.2 MPa stress reduced the surface permeability by 88%. Removing the superficial zone increased the rate of change for all mechanical parameters and decreased the fluid support ratio of the tissue, resulting in increased tissue deformation. Apparent permeability linearly increased after superficial removal in the normal test, yet it did not change in the upside down test. Orientation of the specimen affected the time-dependent biomechanical behavior of the articular cartilage, but not equilibrium behavior. The two tests with different specimen orientations resulted in very different apparent permeabilities, suggesting that in an experimental study which quantifies material properties of an inhomogeneous material, the specimen orientation should be stated along with the permeability result. The current study provides new insights into the role of the superficial zone on mechanical behavior of the articular cartilage. PMID:25465194

  14. Determinación experimental de tensión superficial del agua en cámara micro-reológica

    OpenAIRE

    Jiménez de Pablo, Estela

    2012-01-01

    Existen numerosos estudios en los que aparece el concepto de tensión superficial. En este trabajo se pone en evidencia la relación existente entre la tensión superficial, temperatura y humedad relativa. Se comprueba el comportamiento de la tensión superficial estableciendo variaciones de la humedad relativa con relación al tiempo, para ambientes controlados.

  15. Under digital fluoroscopic guidance multiple-point injection with absolute alcohol and pinyangmycin for the treatment of superficial venous malformations

    International Nuclear Information System (INIS)

    Objective: to investigate the therapeutic efficacy of multiple-point injection with absolute alcohol and pinyangmycin under digital fluoroscopic guidance for superficial venous malformations. Methods: By using a disposal venous transfusion needle the superficial venous malformation was punctured and then contrast media lohexol was injected in to visualize the tumor body, which was followed by the injection of ethanol and pinyangmycin when the needle was confirmed in the correct position. The procedure was successfully performed in 31 patients. The clinical results were observed and analyzed. Results: After one treatment complete cure was achieved in 21 cases and marked effect was obtained in 8 cases, with a total effectiveness of 93.5%. Conclusion: Multiple-point injection with ethanol and pinyangmycin under digital fluoroscopic guidance is an effective and safe technique for the treatment of superficial venous malformations, especially for the lesions that are deeply located and ill-defined. (authors)

  16. A silvicultura e os recursos hídricos superficiais Superficial hydric resources and the silviculture

    Directory of Open Access Journals (Sweden)

    Rafael Zoboli Guimarães

    2010-03-01

    Full Text Available Realizou-se um monitoramento da qualidade da água superficial em áreas de reflorestamento com
    espécies de Pinus taeda e Pinus ellioti no Município de Joinville, Santa Catarina, Brasil, no período de setembro
    de 2005 a julho de 2006. Fez-se a comparação entre os resultados obtidos no monitoramento em talhões de
    diferentes idades de reflorestamento e comparou-se com áreas de mata nativa. Utilizaram-se no monitoramento
    os parâmetros de temperatura, pH, oxigênio dissolvido (OD, demanda bioquímica de oxigênio (DBO, sólidos
    dissolvidos totais, turbidez, e coliformes termotolerantes (CT. Os resultados mais significativos foram: aumento
    médio de 0,4 unidades de pH, de 42 NMP/100mL de CT, comparando a qualidade da água na entrada e saída do
    reflorestamento. Houve maior estabilidade na variação espacial e temporal do parâmetro pH nos reflorestamentos
    mais velhos. Preliminarmente, esta pesquisa mostrou que a atividade de silvicultura não interfere de forma
    considerável na qualidade das águas superficiais.Superficial water quality was monitored in plantation areas with exotic species (Pinus taeda e Pinus ellioti in Joinville coutry, Santa Catarina, Brazil, between September 2005 and July 2006. The results, obtained in the monitoring area through the comparison of different forested catchments of different forestry ages, were compared with the ones of the native forest. The parameters used in monitoring were temperature, pH, dissolved oxygen (DO, oxygen biochemist demand (OBD, total solids dissolved (TSD, turbidity, and thermo tolerant coliforms (TC. The most significant result was: an average increase of 0,4 units of pH, 42 NMP/100 mL of TC, comparing the water quality in the entrance and exit of the forestry. It had greater stability at temporal and spatial variation in pH values in the oldest forestry. Preliminary, this research showed that the silviculture does not considerably intervene

  17. Generación de Mallas Estructuradas en Superficie Generation of Structured Grids on Surfaces

    Directory of Open Access Journals (Sweden)

    João M Baltazar

    2006-01-01

    Full Text Available En este artículo se describe una técnica de generación de mallas estructuradas en superficie, que proporciona dos propiedades importantes: la utilización de un dominio paramétrico independiente de la forma en como la superficie es definida y la posibilidad de seleccionar el dominio computacional arbitrariamente sin tener que respetar las fronteras de la definición geométrica de la superficie. Estas propiedades son obtenidas con la introducción de una transformación de coordenadas adicional que relaciona las variables dependientes del proceso de generación de malla con las variables independientes de la definición geométrica. Se presentan algunos ejemplos de aplicación para problemas de hidrodinámica naval con diferentes descripciones geométricas: un ala elíptica en planta, una hélice marítima convencional y un casco de un buque. El método propuesto puede también ser utilizado con técnicas de generación de mallas más sofisticadas sin ninguna alteración.This paper describes a technique for the generation of structured grids on surfaces. The proposed procedure has two main properties: the parametric domain is independent of the surface definition and the boundaries of the computational domain can be chosen arbitrarily, without considering any limits to the definition of the geometry of the surface. These properties are obtained with the introduction of an extra coordinate transformation that relates the dependent variables of the grid generation process with the independent variables of the geometry definition. Examples of naval hydrodynamic problems with different geometrical descriptions are presented: an elliptical wing, a conventional marine propeller and a ship hull. The proposed method can also be used in conjunction with techniques for the generation of more sophisticated grids without alteration.

  18. Repair and Strengthening by Use of Superficial Fixed Laminates of Cracked Masonry Walls Sheared Horizontally-Laboratory Tests

    International Nuclear Information System (INIS)

    There are many methods of crack repairing in masonry structures. One of them is repair and strengthening by using of superficial fixed laminates, especially in case of masonry walls with plastering on their both sides. The initial laboratory tests of three different types of strengthening of diagonal cracked masonry wallettes are presented. Tests concerned three clay brick masonry walls subjected to horizontal shearing with two levels of precompression and strengthened by flexible polymer injection, superficial glass fixed by polymer fibre laminate plates and using of CRFP strips stiff fixed to the wall surface by polymer and stiff resin epoxy fixing are presented and discussed

  19. ESTIMACIÓN DE LA SUPERFICIE FOLIAR DE LA Canavalia ensiformis A PARTIR DE LAS MEDIDAS LINEALES DE SUS HOJAS

    OpenAIRE

    Gloria M. Martín; De Soto, F.; R. Rivera; Rentería, M.

    2006-01-01

    La superficie foliar de cualquier planta es determinante en su productividad o rendimiento, siendo la hoja el principal órgano donde se realiza la fotosíntesis, proceso mediante el cual la planta toma el CO2 del aire y lo transforma en sustancias orgánicas carbonadas. La Canavalia ensiformis es una planta utilizada en la agricultura como abono verde. En los estudios realizados con esta planta en Cuba, nunca se ha estimado su superficie foliar; además, los métodos empleados para evaluar este í...

  20. Relación entre usos del suelo y calidad del agua superficial en pequeñas cuencas urbanas

    OpenAIRE

    Salvioli, Mónica L.; Cipponeri, Marcos; Colli, Gustavo A.; Calvo, Gabriela

    2012-01-01

    La calidad del agua superficial está condicionada por un variado conjunto de procesos naturales y actividades humanas que interaccionan entre sí; por lo tanto, se verá afectada por los usos efectivos del territorio en la cuenca y por el uso que se haga de dicho recurso. El diagnóstico de calidad del agua superficial es una herramienta significativa en la planificación del territorio y el establecimiento de medidas estructurales y no estructurales para minimizar la degradación ambiental de una...

  1. Low-level laser therapy for the treatment of superficial thrombophlebitis after chemotherapy in breast cancer patients: a case study

    OpenAIRE

    Hwang, Woon Taek; Chung, Sin Ho; Kim, Hyunhee

    2015-01-01

    [Purpose] We report the case of a breast cancer patient with superficial thrombophlebitis treated with low-level laser therapy. [Case] The patient was a 66-year-old women who developed superficial thrombophlebitis in the left upper limb after chemotherapy. She was administered 6 sessions of low-level laser therapy. [Result] Her pain score decreased by 8 points. Her scores on the Patient and Observer scar Assessment Scale decreased by 18 points for the observer portion and by 26 points for the...

  2. Inestabilidades por degradación superficial de taludes en suelos. Corrección mediante sistemas de refuerzo anclados

    OpenAIRE

    Costa García, Almudena da

    2005-01-01

    RESUMEN: Los fenómenos de inestabilidad superficial de taludes en suelos suelen ir asociados a degradación de las propiedades mecánicas a partir de su superficie, por diferentes procesos (humectación, meteorización, etc.). Su análisis se realiza generalmente mediante el empleo de métodos de equilibrio límite, principalmente el método de talud indefinido. Dentro de este marco, la presente Tesis Doctoral plantea un análisis numérico consistente en simular la degradación del terreno mediante una...

  3. La carga precoz de los implantes GMI con conexión interna y superficie arenada y grabada

    OpenAIRE

    E. Velasco Ortega; L. Monsalve Guil; N. Matos Garrido; A. Jiménez Guerra; A. García Méndez; R. Medel Soteras; I. Ortiz García; A. España López

    2014-01-01

    Introducción: La implantología oral representa en la actualidad, una modalidad terapéutica odontológica en los pacientes con pérdida dental total y parcial. El estudio muestra la evaluación de los pacientes tratados mediante carga precoz de implantes de titanio con conexión interna y superficie arenada y grabada. Métodos: 39 pacientes con pérdidas dentales fueron tratados con implantes con conexión interna y superficie arenada y grabada Frontier GMI®. Los implantes fueron cargados funcionalme...

  4. The effect of superficial trunk muscle exercise and deep trunk muscle exercise on the foot pressure of healthy adults

    OpenAIRE

    Kim, Suzy; Shim, JeMyung; Kim, SungJoong; Namkoong, Seung; Kim, Hwanhee

    2015-01-01

    [Purpose] The purpose of this study was to analyze the effect of superficial trunk muscle exercise and deep trunk muscle exercise on the foot pressure of healthy adults. [Subjects] The subjects were 30 healthy females and males who agreed to participate in this study. There were two groups, a superficial trunk muscle exercise group and a deep trunk muscle exercise group, with 15 participants in each. [Methods] The exercises were conducted 5 times a week for 4 weeks for both groups. A gait ana...

  5. Distributional Feature of Detrital Minerais in the Superficial Sediment of South Yellow Sea

    Institute of Scientific and Technical Information of China (English)

    王红霞; 林振宏; 郭玉贵

    2004-01-01

    The composition of detrital minerals with grades of 0.063 - 0.25 mm in the superficial sediment of South Yellow Sea is mainly studied in the paper. The research result shows that the minerals can be divided into more than fifty sorts. The light minerals are mainly feldspar, quartz, mica, etc. The heavy minerals are mainly composed of amphibole, epidote, mica, autogeny pyrite, magnetite, hematite, garnet,zircon and so on, which mainly distribute in the sediments of silty clay and lutaceous silt. According to the content and distribution of the main minerals, the research area isdivided into five miteral combination provinces. The assembled types of minerals in every province have close relationship with its hydrodynamic conditions and sedimentary environment. And the sorts of detrital minerals also show that the detrital substances in the sedimentary areas mainly originate from the drainage areas of rivers,bedrock weathering, and transformed sediment, etc.

  6. Bioleaching of pyrite by Thiobacillus ferrooxidans: fixed grains electrode to study superficial oxidized compounds

    Science.gov (United States)

    Toniazzo, Valérie; Lazaro, Isabelle; Humbert, Bernard; Mustin, Christian

    1999-04-01

    An electrode with fixed pyrite grains on a graphite and silicon paste has been used to study the electrochemical processes at the surface of powdered pyrite during bioleaching by Thiobacillus ferrooxidans. The study of an air-oxidized pyrite shows that the fixed grains electrode (FGE) is more sensitive than the classical Carbon Paste Electrode (CPE) already used by different authors to characterize various oxides and sulfurs. On the other hand, the concommitant Raman and electrochemical analysis of autoclaved pyrite shows that the cleaned mineral FeS 2 has no electrochemical reactivity, and points out that the electrochemical response of the oxidized mineral is exclusively due to the chemical compounds present at its surface. Therefore, the electrode acts as an efficient sensor for pyrite superficial oxidized phases, which are fundamental for the biooxidation process and is consequently very well adapted for the control of the oxidation state of pyrite powder during bioleaching by Thiobacillus ferrooxidans.

  7. Profunda Anchor Technique for Ipsilateral Antegrade Approach in Endovascular Treatment of Superficial Femoral Artery Ostial Occlusion

    International Nuclear Information System (INIS)

    Endovascular treatment of the superficial femoral artery (SFA) is challenging in the presence of flush ostial occlusion. One of the main challenges is the availability of access sites for intervention. Contralateral retrograde femoral access followed by cross-over and antegrade intervention while commonly used, may not be feasible in cases of altered iliac anatomy (e.g. kissing iliac stents). Ipsilateral antegrade intervention using common femoral artery (CFA) access in these instances while possible is typically challenging due to inadequate working length of the CFA for interrogation of the SFA ostium, compounded by the lack of sheath stability. The “profunda anchor” technique uses a buddy wire in the profunda femoris artery (PFA) to stabilize the sheath and allow catheter manipulation for antegrade intervention at the level of the SFA ostium. The PFA is further used as a conduit for deployment of closure device to avoid interference with the treated SFA

  8. ACE inhibitors can induce circulating antibodies directed to antigens of the superficial epidermal cells.

    Science.gov (United States)

    Cozzani, Emanuele; Rosa, Gian Marco; Drosera, Massimo; Intra, Chiara; Barsotti, Antonio; Parodi, Aurora

    2011-07-01

    Drug-induced pemphigus has been reported in patients receiving angiotensin-converting enzyme inhibitors. The aim of this work was to study a group of hypertensive patients without skin diseases treated with angiotensin-converting enzyme (ACE) Inhibitors (I), to verify the presence of serum circulating anti-antibodies. The indirect immunofluorescence showed that 33 sera (52.38%) presented autoantibodies directed to an antigen of the cytoplasm of the superficial epidermal keratinocytes. Two of the 33 positive sera had antibodies to Dsg1 and/or 3 in ELISA. Immunoblot analyses were negative. All the 48 control sera were found to have no circulating antibodies using the three assays. Our results would confirm that ACEI drugs may trigger the production of circulating autoantibodies also in patients without clinical manifestations of pemphigus. PMID:20563876

  9. Late Complication after Superficial Femoral Artery (SFA) Aneurysm: Stent-graft Expulsion Outside the Skin

    Energy Technology Data Exchange (ETDEWEB)

    Pecoraro, Felice, E-mail: felicepecoraro@libero.it; Sabatino, Ermanno R.; Dinoto, Ettore; Rosa, Giuliana La; Corte, Giuseppe; Bajardi, Guido [University of Palermo, Vascular Surgery Unit (Italy)

    2015-10-15

    A 78-year-old man presented with a 7-cm aneurysm in the left superficial femoral artery, which was considered unfit and anatomically unsuitable for conventional open surgery for multiple comorbidities. The patient was treated with stent-graft [Viabhan stent-graft (WL Gore and Associates, Flagstaff, AZ)]. Two years from stent-graft implantation, the patient presented a purulent secretion and a spontaneous external expulsion through a fistulous channel. No claudication symptoms or hemorrhagic signs were present. The pus and device cultures were positive for Staphylococcus aureus sensitive to piperacillin/tazobactam. Patient management consisted of fistula drainage, systemic antibiotic therapy, and daily wound dressing. At 1-month follow-up, the wound was closed. To our knowledge, this is the first case of this type of stent-graft complication presenting with external expulsion.

  10. Tyrothricin--An underrated agent for the treatment of bacterial skin infections and superficial wounds?

    Science.gov (United States)

    Lang, C; Staiger, C

    2016-06-01

    The antimicrobial agent tyrothricin is a representative of the group of antimicrobial peptides (AMP). It is produced by Bacillus brevis and consists of tyrocidines and gramicidins. The compound mixture shows activity against bacteria, fungi and some viruses. A very interesting feature of AMPs is the fact, that even in vitro it is almost impossible to induce resistances. Therefore, this class of molecules is discussed as one group that could serve as next generation antibiotics and overcome the increasing problem of bacterial resistances. In daily practice, the application of tyrothricin containing formulations is relatively limited: It is used in sore throat medications and in agents for the healing of infected superficial and small-area wounds. However, due to the broad spectrum antimicrobial activity and the low risk of resistance development it is worth to consider further fields of application. PMID:27455547

  11. Dermoscopy of Pigmented Bowen’s Disease Mimicking Early Superficial Spreading Melanoma

    Directory of Open Access Journals (Sweden)

    Yuka Hayashi

    2009-07-01

    Full Text Available A 89-year-old Japanese woman presented at our clinic because of a several months’ history of an asymptomatic gradually enlarging pigmented skin lesion on the dorsum of the left foot. Physical examination revealed a single hyperpigmented oval macule of 5 mm with a rough surface. The color of the lesion was dark brown to light brown. Dermoscopic examination demonstrated atypical pigment network with small dotted vessels. Irregular streaks were also partially noted at the periphery. We suspected superficial spreading melanoma and performed an excision. The histologic features were consistent with a diagnosis of pigmented Bowen’s disease. We could not completely account for dermoscopic aspects from the pathological findings of hematoxylin and eosin-stained specimens; therefore, specimens were stained with Fontana-Masson stain. It clearly demonstrated the distribution of melanin in the epidermis. We concluded that atypical network was due to an uneven melanin deposition in the variably thickened epidermal rete ridges.

  12. Profunda Anchor Technique for Ipsilateral Antegrade Approach in Endovascular Treatment of Superficial Femoral Artery Ostial Occlusion

    Energy Technology Data Exchange (ETDEWEB)

    Pua, Uei, E-mail: druei@yahoo.com [Tan Tock Seng Hospital, Department of Diagnostic Radiology (Singapore)

    2015-04-15

    Endovascular treatment of the superficial femoral artery (SFA) is challenging in the presence of flush ostial occlusion. One of the main challenges is the availability of access sites for intervention. Contralateral retrograde femoral access followed by cross-over and antegrade intervention while commonly used, may not be feasible in cases of altered iliac anatomy (e.g. kissing iliac stents). Ipsilateral antegrade intervention using common femoral artery (CFA) access in these instances while possible is typically challenging due to inadequate working length of the CFA for interrogation of the SFA ostium, compounded by the lack of sheath stability. The “profunda anchor” technique uses a buddy wire in the profunda femoris artery (PFA) to stabilize the sheath and allow catheter manipulation for antegrade intervention at the level of the SFA ostium. The PFA is further used as a conduit for deployment of closure device to avoid interference with the treated SFA.

  13. Late Complication after Superficial Femoral Artery (SFA) Aneurysm: Stent-graft Expulsion Outside the Skin

    International Nuclear Information System (INIS)

    A 78-year-old man presented with a 7-cm aneurysm in the left superficial femoral artery, which was considered unfit and anatomically unsuitable for conventional open surgery for multiple comorbidities. The patient was treated with stent-graft [Viabhan stent-graft (WL Gore and Associates, Flagstaff, AZ)]. Two years from stent-graft implantation, the patient presented a purulent secretion and a spontaneous external expulsion through a fistulous channel. No claudication symptoms or hemorrhagic signs were present. The pus and device cultures were positive for Staphylococcus aureus sensitive to piperacillin/tazobactam. Patient management consisted of fistula drainage, systemic antibiotic therapy, and daily wound dressing. At 1-month follow-up, the wound was closed. To our knowledge, this is the first case of this type of stent-graft complication presenting with external expulsion

  14. The distally based superficial sural flap for reconstruction of the lower leg and foot.

    Science.gov (United States)

    Rajacic, N; Darweesh, M; Jayakrishnan, K; Gang, R K; Jojic, S

    1996-09-01

    We describe our experience with the use of distally based superficial sural flaps for coverage of defects in the lower leg and foot in 21 patients. In 18 patients the flap was successfully transferred, in 2 cases partial necrosis of the flap occurred and 1 flap failed completely. In 18 cases the flap was used as a fasciocutaneous flap and in 3 cases as a fascial flap only. The advantages of this flap are: easy and quick dissection, hence saving operating time, minimal morbidity of donor site and preservation of major arteries of the leg. Although the flap was described as reliable for covering defects around the ankle joint, we have been able to cover defects of the dorsum of the foot distally and up to the mid-third of the tibia proximally. PMID:8881785

  15. Superficial Type of Multiple Basal Cell Carcinomas: Detailed Comparative Study of Its Dermoscopic and Histopathological Findings

    Directory of Open Access Journals (Sweden)

    Akiko Hirofuji

    2011-01-01

    Full Text Available We investigated in detail the dermoscopic and histopathological findings in a case of a superficial type of multiple basal cell carcinomas (BCCs. These multiple lesions (occurring in the chest, neck, and back showed three different findings, respectively. Dermoscopy of the erythematous and brown-colored patch on the anterior chest showed spoke wheel areas, and the histopathological cross-section revealed vertical spoke wheel structures. In the black- and brown-colored patch at the neck, the dermatoscopy showed a maple leaf-like structure, which was in accordance with the strengthening of the histological lateral connection of the lesion. The brown-colored patch of the lateral back histologically showed irregularly enlarged spoke wheel-like areas with peripheral increased melanin pigments, which correlated with the dark black color of dermoscopic maple leaf-like areas. The vertical spoke wheel areas by dermatoscopy revealed a horizontal spoke wheel structure by histopathology.

  16. Preoperative chemoradiotherapy using superselective intraarterial infusion via superficial temporal artery for stage III, IV oral cancer

    International Nuclear Information System (INIS)

    Thirty-eight patients with stage III, IV oral cancer were treated by preoperative chemoradiotherapy using superselective intraarterial infusion via the superficial temporal artery. Radiotherapy (total dose: 40 Gy) and chemotherapy using CBDCA (total dose: 460 mg/m2) were performed daily, followed by surgery. Catheter-insertion of 34 patients was done successfully. Four catheter insertions were not done successfully because of the anomaly of the artery such as common trunk of the lingual artery and the facial artery. The clinical effects were CR in 9 patients (26.5%) and PR in 25 (73.5%), and histopathological effects after surgery were grade III, IV in 10 (29.4%), grade IIb in 23 (67.6%), and grade IIa in 2 (5.8%). The 5-year cumulative survival rate was 67.8%. This superselective intra arterial infusion method could be the technique of choice for the treatment of oral cancer. (author)

  17. A new technique for radiation shielding in superficial X-ray therapy

    International Nuclear Information System (INIS)

    A new technique is described for making face shields for superficial X-ray therapy of small lesions located near sharp face contour changes. A ''Darvic'' shell is first vacuum-formed on a plaster cast. A low-melting-point alloy is then finely sprayed on to the shell. The area to be treated is cut out of the alloy mask and Darvic shell. Four alloys of varying melting point and varying lead and/or tin content were tested: MCP 69, MCP 70 and MCP 124 alloys afforded better shielding over the whole energy range than MCP 137. This technique of spraying masks produces a perfectly fitting shield, it is quick to make and is cheap because the mask can be recycled once treatment is finished. (U.K.)

  18. Effects of He-Ne laser beam on mechanical, heat, chemical and superficial wounds

    International Nuclear Information System (INIS)

    This study summarizes the effects of low-doses of He-Ne laser radiation (λ = 6328 A), on healing of four types of wounds, including mechanical, heat, chemical and superficial wounds. The results revealed that variations between complete wound-closure in irradiated samples and that of control groups were statistically significant. Moreover, the results suggest that the stimulative action of laser is an accumulative phenomenon, that affects factors involved in the course of wound healing. The results also indicate that the skin epithelium is a highly responsive tissue towards this sort of radiation, which suggests that the stimulative action of He-Ne laser could be assayed easily by using such tissues as a test target. (author). 11 refs, 2 tabs

  19. Surface Layer Properties after Successive EDM or EDA and Then Superficial Roto-Peen Machining

    Directory of Open Access Journals (Sweden)

    Agnieszka Dmowska

    2012-01-01

    Full Text Available The paper presents the results of the influence of basic electrical discharge machining EDM parameters and electrical discharge alloying EDA parameters on surface layer properties and on selected performance properties of machine parts after such machining but also the influence of superficial cold-work treatment applied after the EDM of EDA on modification of these properties. The investigations included texture of the surface, metallographic microstructure, microhardness distribution, fatigue strength, and resistance to abrasive wear. It was proved that the application of the roto-peen after the EDM and the EDA resulted in lowering roughness height up to 70%, the elevation of surface layer microhardness by 300–700 μHV, and wear resistance uplifting by 300%.

  20. Photoluminescence of acupoint 'Waiqiu' in human superficial fascia

    Energy Technology Data Exchange (ETDEWEB)

    Zhang Yuan [Synchrotron Radiation Research Center, Department of Physics, Surface Physics Laboratory (State Key Laboratory) of Fudan University, Shanghai 200433 (China); Yan Xiaohui [Synchrotron Radiation Research Center, Department of Physics, Surface Physics Laboratory (State Key Laboratory) of Fudan University, Shanghai 200433 (China); Liu Chenglin [Synchrotron Radiation Research Center, Department of Physics, Surface Physics Laboratory (State Key Laboratory) of Fudan University, Shanghai 200433 (China); Dang Ruishan [Second Military Medical University, Shanghai 200433 (China); Zhang Xinyi [Synchrotron Radiation Research Center, Department of Physics, Surface Physics Laboratory (State Key Laboratory) of Fudan University, Shanghai 200433 (China) and Shanghai Research Center of Acupuncture and Meridian, Pudong, Shanghai 201203 (China)]. E-mail: xy-zhang@fudan.edu.cn

    2006-07-15

    The spectral characters of an acupuncture point named 'Waiqiu' in superficial fascia tissue have been studied by photoluminescence (PL) spectroscopy under the excitation of 457.9 nm. The PL around 'Waiqiu' acupuncture point consists of two sub-bands resulting from the flavin adenine dinucleotide (FAD) and phospholipids, and the porphyrins (including purine, isoxanthopterin and tryptophan), respectively. More emission due to FAD and phospholipids is found inside the acupuncture effect area of 'Waiqiu' than its marginal or outside acupuncture regions. The ratio of emission intensity of FAD and phospholipids to one of porphyrins gradually decreases along the direction away from the center of the acupuncture point. It implies that the component proportion changes between FAD, phospholipids and porphyrins around the 'Waiqiu' acupuncture point. We suggest that there might be a certain relationship between redox function of FAD and 'Waiqiu' acupuncture effect.

  1. Multiple superficial basal cell carcinoma of the skin that appeared macroscopically healthy after radiotherapy. Case report

    Energy Technology Data Exchange (ETDEWEB)

    Handa, Yoshihiro; Takakuwa, Sachiko; Yamada, Motohito; Ono, Hiroki; Tomita, Yasushi [Nagoya Univ. (Japan). School of Medicine

    2000-01-01

    The patient was a 76-year-old woman with multiple superficial basal cell carcinomas. She had undergone radiotherapy for a 1-year period after hysterectomy for uterine carcinoma 38 years previously, and the basal cell carcinomas coincided with the irradiated parts. No clear symptoms of chronic radioepithelitis could be found macroscopically, but the lesions were thought to represent radiation-induced carcinoma based on the histopathological findings (atrophy of the epidermis, hyalinization and sclerosis of dermal connective tissue, inflammatory cell infiltration, and capillary dilatation). The lesion was removed to the depth of the adipose tissue with a 5 mm margin around the tumor, and primary closure was achieved. No recurrences or new carcinomas have been detected during the 16 months since the operation. (K.H.)

  2. Fractal dimension analysis of superficial soft tissue lesions on magnetic resonance imaging

    Energy Technology Data Exchange (ETDEWEB)

    Ogawa, Tomoko; Hosaka, Yoshiaki; Tosa, Yasuyoshi [Showa Univ., Tokyo (Japan). School of Medicine; Iida, Naoshige [Akita Red Cross Hospital (Japan)

    2002-07-01

    We isolated an area of superficial soft tissue lesion margin using Magnetic Resonance Imaging (MRI). In an attempt to distinguish benign tumors cyst and lipoma' from malignant ones'' basal cell carcinoma (BCC) and squamous cell carcinoma (SCC)', objectively and quantatively, we used fractal dimension analysis. The margin of lesion was extracted automatically from the binarized image, and the average fractal dimension was calculated and estimated. As a result, we concluded that the fractal dimension of malignant tumors was greater than that of benign tumors, in spite of no significant difference between BCC and SCC, and cyst and lipoma respectively. Fractal dimension analysis is therefore a useful method of distinguishing benign from malignant tumors when using MRI diagnosis. (author)

  3. Abnormal phenotype of human cultured fibroblasts from superficial radiation-induced fibrosis (RIF)

    International Nuclear Information System (INIS)

    Pathophysiological aspects of human RIF have not been well characterized and our present knowledge is mostly established on extrapolated data from experimental in vivo studies or in vitro cell irradiation. We developed human cell cultures from superficial RIF samples, in order to analyze directly the long term process following therapeutic irradiation. Our study showed that in human RIF, characterized by an heterogeneous extra-cellular matrix deposition, atrophic vascularization, myo-fibroblast like cells and inflammatory cells, the surviving cells in culture exhibited a dramatic reduced proliferation and a low metabolism, characteristic signs of a senescence process. These results might explain the delayed radiation-induced necrosis as an ultimate evolution of RIF. (authors)

  4. Argon plasma coagulation for superficial esophageal squamous-cell carcinoma in high-risk patients

    Institute of Scientific and Technical Information of China (English)

    Kumiko Tahara; Satoshi Tanabe; Kenji Ishido; Katsuhiko Higuchi; Tohru Sasaki; Chikatoshi Katada; Mizutomo Azuma

    2012-01-01

    AIM:To evaluate the usefulness and safety of argon plasma coagulation (APC) for superficial esophageal squamous-cell carcinoma (SESC) in high-risk patients.METHODS:We studied 17 patients (15 men and 2 women,21 lesions) with SESC in whom endoscopic mucosal resection (EMR),endoscopic submucosal dissection (ESD),and open surgery were contraindicated from March 1999 through February 2009.None of the patients could tolerate prolonged EMR/ESD or open surgery because of severe concomitant disease (e.g.,liver cirrhosis,cerebral infarction,or ischemic heart disease) or scar formation after EMR/ESD and chemoradiotherapy.After conventional endoscopy,an iodine stain was sprayed on the esophageal mucosa to determine the lesion margins.The lesion was then ablated by APC.We retrospectively studied the treatment time,number of APC sessions per site,complications,presence or absence of recurrence,and time to recurrence.RESULTS:The median duration of follow-up was 36 mo (range:6-120 mo).All of the tumors were macroscopically classified as superficial and slightly depressed type (0-Ⅱ c).The preoperative depth of invasion was clinical T1a (mucosal cancer) for 19 lesions and clinical T1b (submucosal cancer) for 2.The median treatment time was 15 min (range:10-36 min).The median number of treatment sessions per site was 2 (range:1-4).The median hospital stay was 14 d (range:5-68d).Among the 17 patients (21 lesions),2 (9.5%) had recurrence and underwent additional APC with no subsequent evidence of recurrence.There were no treatment-related complications,such as bleeding or perforation.CONCLUSION:APC is considered to be safe and effective for the management of SESC that cannot be resected endoscopically because of underlying disease,as well as for the control of recurrence after EMR and local recurrence after chemoradiotherapy.

  5. Study of the mechanisms involved in the laser superficial hardening process of metallic alloys

    International Nuclear Information System (INIS)

    The laser superficial hardening process of a ferrous alloy (gray cast iron) and of an aluminum-silicon alloy was investigated in this work. These metallic alloys are used in the automobile industry for manufacturing cylinders and pistons, respectively. By application of individual pulses and single tracks, the involved mechanisms during the processing were studied. Variables such as energy density, power density, temporal width, beam diameter on the sample surface, atmosphere of the processing region, overlapping and scanning velocity. The hardened surface was characterized by optical and scanning electronic microscopy, dispersive energy microanalysis, X-ray mapping, X-ray diffraction, and measurements of roughness and Vickers microhardness. Depending on the processing parameters, it is possible to obtain different microstructures. The affected area of gray cast iron, can be hardened by remelting or transformation hardening (total or partial) if the reached temperature is higher or not that of melting temperature. Laser treatment originated new structures such as retained austenite, martensite and, occasionally, eutectic of cellular dendritic structure. Aluminum-silicon alloy does not have phase transformation in solid state, it can be hardened only by remelting. The increase of hardness is a function of the precipitation hardening process, which makes the silicon particles smaller and more disperse in the matrix. Maximal values of microhardness (700-1000 HV) were reached with the laser treatment in gray cast iron samples. The initial microhardness is of 242 HV. For aluminum-silicon alloy, the laser remelting increases the initial microhardness of 128 HV to the range of 160-320 HV. The found results give a new perspective for using the CLA/IPEN's laser in the heat treatment area. Besides providing a higher absorptivity to the materials, compared with the CO2 laser, and optical fiber access, the superficial hardening with Nd:YAG laser, depending on the level of

  6. Electromagnetic optimization of dual-mode antennas for radiometry-controlled heating of superficial tissue

    Science.gov (United States)

    Maccarini, Paolo F.; Rolfsnes, Hans O.; Neuman, Daniel G., Jr.; Johnson, Jessi E.; Juang, Titania; Jacobsen, Svein; Stauffer, Paul R.

    2005-04-01

    The large variance of survival in the treatment of large superficial tumors indicates that the efficacy of current therapies can be dramatically improved. Hyperthermia has shown significant enhancement of response when used in combination with chemotherapy and/or radiation. Control of temperature is a critical factor for treatment quality (and thus effectiveness), since the response of tumor and normal cells is significantly different over a range of just a few degrees (41-45°). For diffuse spreading tumors, microwave conformal arrays have been shown to be a sound solution to deposit the power necessary to reach the goal temperature throughout the targeted tissue. Continuous temperature monitoring is required for feedback control of power to compensate for physiologic (e.g. blood perfusion and dielectric properties) changes. Microwave radiometric thermometry has been proposed to complement individual fluoroptic probes to non-invasively map superficial and sub-surface temperatures. The challenge is to integrate the broadband antenna used for radiometric sensing with the high power antenna used for power deposition. A modified version of the dual concentric conductor antenna presented previously is optimized for such use. Several design challenges are presented including preventing unwanted radiating modes and thermal and electromagnetic coupling between the two antennas, and accommodating dielectric changes of the target tissue. Advanced 3D and planar 2D simulation software are used to achieve an initial optimized design, focused on maintaining appropriate radiation efficiency and pattern for both heating and radiometry antennas. A cutting edge automated measurement system has been realized to characterize the antennas in a tissue equivalent material and to confirm the simulation results. Finally, the guidelines for further development and improvement of this initial design are presented together with a preliminary implementation of the feedback program to be used

  7. Groin recurrence in patients with early vulvar cancer following superficial inguinal node dissection

    International Nuclear Information System (INIS)

    Objective: To investigate the causes of groin recurrence in patients with vulval cancer Early vulvar cancer; who previously had negative nodes following superficial inguinal node dissection (SIND). Groin recurrence Material and methods: Forty-one patients with squamous cell carcinoma of the vulva (stage I or II) were operated upon. The primary treatment was wide local excision with 2 cm safety margin and superficial inguinal lymphadenectomy. Six patients had ipsilateral and one patient had bilateral groin recurrence. Those patients were subjected to deep inguinal node dissection (one patient required bilateral node dissection). Results: The mean age at time of diagnosis was 59 years (range 51-68). The median follow-up period for all patients was 63 months (range 24-71) and that of the recurrent cases was 20 months (range 12-38). The mean depth of invasion of the recurrent cases was 5.5 mm (range 5-5.9 mm) and the mean diameter of the primary tumor in recurrent cases was 3.8 cm (range 3-4.5 cm). All recurrent cases had a high grade of the primary tumor. The median interval to recurrence was 21 months (range 12-57). The groin recurrence rate after negative SIND was 17% (7/41 patient- s).The mean number of nodes resected per groin was eight (range 1 17). The nodes ranged in size from 0.2 to 4.0 cm. Conclusion: Carcinoma of the vulva with the following criteria (size of tumor is greater than 3 cm, depth of invasion greater than 5 mm, and high grade tumors) is at high risk of recurrence

  8. Evolucion geomorfologica de la superficie de erosion rlooo en los LLanos de Castro Caldelas (Ourense

    Directory of Open Access Journals (Sweden)

    Vidal Romaní, J. R.

    2002-12-01

    Full Text Available We present the morphological analysis of a sector of the Rloo, replane. The sector chosen is hanging above the current fluvial network. This fact allows us to attribute a semi-functional character to the courses which drain the replane. Eleven levels of erosive terraces have been identified, which correspond to the degradation of the initial replane. The geometry of the network allows us to suppose that the current organisation was reached by means of successive captures. On the other hand, two layouts of the network have been distinguished (centripetal and in bayonet. The centripetal network defines a hollow surface and the bayonet network a surface in stepped inclines. We propose that both morphologies correspond to different stages of a same process: the hollowing out of the R1,. Lastly we propose the hypothesis of a tectonic pattem of the R100, for the origin of the Llanos.Se presenta el análisis morfológico de un sector del replano Rlooo. El sector escogido está colgado por encima de la red fluvial actual. Este hecho permite atribuir a los cursos que drenan el replano un carácter semi funcional. Se han identificado once niveles de terrazas erosivas, que corresponden al desmantelamiento del replano inicial. La geometría de la red permite suponer que la organización actual se alcanzó mediante sucesivas capturas. Por otra parte, se han distinguido dos trazados de la red (centrípeta y en bayoneta; la red centrípeta define una superficie hueca y la red en bayoneta una superficie en rampas escalonadas. Se propone que ambas morfologías corresponderían a diferentes estadios de un mismo proceso: el vaciado del Rloqo. Por último, se propone la hipótesis de un descabalamiento tectónico del R100 para el origen de los Llanos.

  9. SU-E-I-87: Calibrating Cherenkov Emission to Match Superficial Dose in Tissue

    International Nuclear Information System (INIS)

    Purpose: Through Monte Carlo simulations and phantom studies, the dominant factors affecting the calibration of superficial Cherenkov intensity to absolute surface dose was investigated, including tissue optical properties, curvatures, beam properties and imaging angle. Methods: The phasespace files for the TrueBeam system from Varian were used in GAMOS (a GEANT4 based Monte Carlo simulation toolkit) to simulate surface emission Cherenkov signals and the correlated deposited dose. The parameters examined were: i) different tissue optical properties (skin color from light to dark), ii) beam types (X-ray and electron beam), iii) beam energies, iv) thickness of tissues (2.5 cm to 20 cm), v) SSD (80 cm to 120 cm), vi) field sizes (0.5×0.5 cm2 to 20×20 cm2), vii) entrance/exit sides, viii) curvatures (cylinders with diameters from 2.5 cm to 20cm) and ix) imaging angles (0 to 90 degrees). In a specific case, for any Cherenkov photon emitted from the surface, the original position and direction, final position and direction and energy were recorded. Similar experimental measurements were taken in a range of the most pertinent parameters using tissue phantoms. Results: Combining the dose distribution and sampling sensitivity of Cherenkov emission, quantitatively accurate calibration factors (the amount of radiation dose represented by a single Cherenkov photon) were calculated. The data showed relatively large dependence upon different optical properties, curvature, entrance/exit and beam types. For a diffusive surface, the calibration factor was insensitive to imaging angles smaller than 60 degrees. Normalization with the reflectance image was experimentally validated as a simple and accurate method for calibrations of different optical properties. Conclusion: This study sheds light on how and to what extent different conditions affect the calibration from Cherenkov intensity to absolute superficial dose and provides practical solutions to allow quantitative Cherenkov

  10. Endovascular stent placement for the treatment of superficial femoral artery stenoses and occlusions

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Seul Kee; Yang, Hee Sun; Han, Jae Hee; Yim, Nam Yeol; Yoon, Woong; Kim, Jae Kyu [Chonnam National University Hospital, Gwangju (Korea, Republic of); Chang, Nam Kyu [Chonnam National University Hwasun Hospital, Hwasun (Korea, Republic of)

    2008-04-15

    The aim of this study was to evaluate effectiveness of an endovascular stent placement in the treatment of superficial femoral artery stenoses and occlusions. An angioplasty and stent placement was performed in forty four patients (42 men and 2 women; mean age: 71.2 years; age range: 50-82 years). A total of 27 patients were diagnosed with intermittent claudication, in addition to 8 patients with resting pain, and 9 patients with gangrene. A follow-up evaluation accompanied with a physical examination, catheter angiography, and a color Doppler sonography was performed. The patency rates were analyzed after 3 months, 6 months, 1 year and 2 years. The predictors of restenosis, according to the clinical and anatomical classification, risk factors, as well as the correlation of stent fracture and restenosis were analyzed. Initial technical success was achieved in all patients. The stent placement resulted in an initial improvement of the clinical category in more than one level for 95.5% of cases. Over the course of the follow-up period (mean: 17 months; range, 1-106 months), restenosis occurred in 16 patients (36.4%). The highest patency rates were 87.9% after 3 months, 81.5% after 6 months, 78.0% after 1 year, 54.2% after 2 years, and 46.0% after 3 years. No significant difference was found for the patency rates as a function of the clinical and anatomical classifications, or the risk factors. A stent fracture was identified on only two occasions; however, no clinical symptoms or good intra-stent blood flow was observed in a follow-up angiography. A mid-term patency after the stent placements for superficial femoral artery stenoses and occlusions was found to be unfavorable despite an initial success rate. Consequently, greater clinical experience and analysis is necessary.

  11. In vivo analysis of the human superficial cerebral venous anatomy by using 3D-MRI

    International Nuclear Information System (INIS)

    The purpose of this study is to show the reliability of three dimensional magnetic resonance imaging (3D-MRI), and to classify the drainage patterns of the superficial cerebral veins. At first, toothpicks were stuck into fixed brain surface of a dog. To examine the best methods for making 3D-MRI, the 3D-MRI, including the diameter of the holes, of the dog's brain were analyzed in four threshold values. The holes on the 3D-MRI appeared smaller than their actual size due to the partial volume effect. The low threshold showed more errors than the higher. This result showed it was necessary to display the good 3D-MRI to refer the original MR images. Next, the 3D-MRI of clinical patients who had brain tumors were correlated with operative findings especially in relation to the lesions and brain surface, vessels, ventricles. The relation between the lesions and brain surface, vessels were displayed well, but there were some problems with inadequate ventricular display. Finally, anatomical study using 3D-MRI was performed, because 3D-MRI could display the relation between the brain surface and the superficial cerebral veins in the basic studies. The third study demonstrated that the transverse frontal vein was found in 15%, vein of Trolard ran in front of the central sulcus in 91.5% and several anastomosing veins were frequently observed. These studies showed the progress of technology in bringing about a lot of new information by using 3D-MRI. (author)

  12. Endovascular stent placement for the treatment of superficial femoral artery stenoses and occlusions

    International Nuclear Information System (INIS)

    The aim of this study was to evaluate effectiveness of an endovascular stent placement in the treatment of superficial femoral artery stenoses and occlusions. An angioplasty and stent placement was performed in forty four patients (42 men and 2 women; mean age: 71.2 years; age range: 50-82 years). A total of 27 patients were diagnosed with intermittent claudication, in addition to 8 patients with resting pain, and 9 patients with gangrene. A follow-up evaluation accompanied with a physical examination, catheter angiography, and a color Doppler sonography was performed. The patency rates were analyzed after 3 months, 6 months, 1 year and 2 years. The predictors of restenosis, according to the clinical and anatomical classification, risk factors, as well as the correlation of stent fracture and restenosis were analyzed. Initial technical success was achieved in all patients. The stent placement resulted in an initial improvement of the clinical category in more than one level for 95.5% of cases. Over the course of the follow-up period (mean: 17 months; range, 1-106 months), restenosis occurred in 16 patients (36.4%). The highest patency rates were 87.9% after 3 months, 81.5% after 6 months, 78.0% after 1 year, 54.2% after 2 years, and 46.0% after 3 years. No significant difference was found for the patency rates as a function of the clinical and anatomical classifications, or the risk factors. A stent fracture was identified on only two occasions; however, no clinical symptoms or good intra-stent blood flow was observed in a follow-up angiography. A mid-term patency after the stent placements for superficial femoral artery stenoses and occlusions was found to be unfavorable despite an initial success rate. Consequently, greater clinical experience and analysis is necessary

  13. Effects of neurotensin on visual neurons in the superficial laminae of the hamster's superior colliculus.

    Science.gov (United States)

    Zhang, Y; Mooney, R D; Bennett-Clarke, C A; Rhoades, R W

    1996-01-01

    Autoradiography with 125I-neurotensin in normal and enucleated hamsters was used to define the distribution of receptors for this peptide in the superficial layers of the superior colliculus (SC). Neurotensin binding sites were densely distributed in the stratum griseum superficiale (SGS), and results from the enucleated animals indicated that they were not located on retinal axons. The effects of neurotensin on individual superficial layer cells were tested in single-unit recording experiments. Neurotensin was delivered via micropressure ejection during visual stimulation (n = 75 cells), or during electrical stimulation of either the optic chiasm (OX; n = 47 cells) or visual cortex (CTX; n = 29 cells). In comparison with control values, application of neurotensin decreased visual responses of all SC cells tested to 54.1 +/- 34.9% (mean +/- standard deviation; range of decrement 7.5 to 100%; nine cells showed no effect or an increase in visual activity, which for four of these was > or = 30%). Neurotensin application also reduced responses to electrical stimulation of either OX or CTX, respectively, to 65.8 +/- 36.5% of control values (range of decrement 2.6 to 97.4%; 12 neurons showed a weak increment or = 30%). Of the 25 neurons tested with both OX and CTX stimulation, the correlation of evoked response suppression by neurotensin was highly significant (r = 0.70; P iontophoresis of glutamate and then tested with neurotensin. Neurotensin reduced the glutamate-evoked responses to an average 59.3 +/- 37.9% of control values (range 2.3 to 92.5%; one cell showed an increment > 30%). This result suggests that the site of action of neurotensin is most likely postsynaptic. PMID:8737274

  14. Superficial integrity analysis in a super duplex stainless steel after turning

    Directory of Open Access Journals (Sweden)

    E.C. Bordinassi

    2006-08-01

    Full Text Available Purpose: Purpose of this paper was to study the main effects of the turning in the superficial integrity of theduplex stainless steel ASTM A890-Gr6A.Design/methodology/approach: The focus of the work was the finishing operations and a complete factorialplanning was used, with 2 levels and 5 factors. The tests were conducted on a turning center with carbidetools and the main entrances variables were: tool material class, feed rate, cutting depth, cutting speed andcutting fluid utilization. The answers analyzed were: micro structural analysis by optical microscopy and x-raydiffraction, cutting forces measurements by a piezoelectric dynamometer, surface roughness, residual stress byx-ray diffraction technique and the micro-hardness measurements.Findings: The results do not showed any changes in the micro structural of the material, even when the greatercutting parameters were used. All the other answers were correlated with the cutting parameters and its bettercombination was founded for the best superficial integrity. The smaller feed rate (0.1 mm/v, smaller cuttingspeed (110 m/min and the greater cutting depth (0.5 mm provided the smaller values for the tensile residualstress, the smaller surface roughness and the greater micro-hardness.Research limitations/implications: The correlation between all the answers was very difficult to analyzebecause there was great interaction between the factors, but for some data group it was possible.Originality/value: The paper contribute for the study of the super duplex stainless steel, considering that no oneresearches was founded for the studied topics in this material in witch presents different behavior in machiningwhen compared with another stainless steels.

  15. Serial superficial digital flexor tendon biopsies for diagnosing and monitoring collagenase-induced tendonitis in horses

    Directory of Open Access Journals (Sweden)

    José C. de Lacerda Neto

    2013-06-01

    Full Text Available The purpose of this investigation was to demonstrate the feasibility of a biopsy technique by performing serial evaluations of tissue samples of the forelimb superficial digital flexor tendon (SDFT in healthy horses and in horses subjected to superficial digital flexor tendonitis induction. Eight adult horses were evaluated in two different phases (P, control (P1 and tendonitis-induced (P2. At P1, the horses were subjected to five SDFT biopsies of the left forelimb, with 24 hours (h of interval. Clinical and ultrasonographic (US examinations were performed immediately before the tendonitis induction, 24 and 48 h after the procedure. The biopsied tendon tissues were analyzed through histology. P2 evaluations were carried out three months later, when the same horses were subjected to tendonitis induction by injection of bacterial collagenase into the right forelimb SDFT. P2 clinical and US evaluations, and SDFT biopsies were performed before, and after injury induction at the following time intervals: after 24, 48, 72 and 96 h, and after 15, 30, 60, 90, 120 and 150 days. The biopsy technique has proven to be easy and quick to perform and yielded good tendon samples for histological evaluation. At P1 the horses did not show signs of localised inflammation, pain or lameness, neither SDFT US alterations after biopsies, showing that the biopsy procedure per se did not risk tendon integrity. Therefore, this procedure is feasible for routine tendon histological evaluations. The P2 findings demonstrate a relation between the US and histology evaluations concerning induced tendonitis evolution. However, the clinical signs of tendonitis poorly reflected the microscopic tissue condition, indicating that clinical presentation is not a reliable parameter for monitoring injury development. The presented method of biopsying SDFT tissue in horses enables the serial collection of material for histological analysis causing no clinical signs and tendon damage seen

  16. Estudios de series temporales de energía solar UV-B de 305 nm y espesor de la capa de ozono estratosférico en Arica, norte de Chile Study of time series for 305 nm solar energy UV-B and stratospheric ozone layer thickness Arica in the north of Chile

    Directory of Open Access Journals (Sweden)

    Miguel Rivas

    2011-08-01

    Full Text Available En este trabajo se muestran los resultados del análisis de las series temporales de la energía solar medida a nivel del suelo, en la banda de 305 nm, y el espesor de la capa de ozono estratosférico. El rasgo más importante es la independencia de los valores de energía a nivel del suelo respecto de la variabilidad de corto periodo de la capa de ozono, siendo probablemente efectos meteorológicos locales los que llevan el mayor peso de la varianza.In this paper, the results obtained by analyzing time series of ground level energy of the solar radiation in the 305 nm band and stratospheric ozone layer thickness are shown. The most relevant feature found is the independence of the variability of the ground level energy with respect to the short period variations of the ozone layer, being the meteorological local effects those which more heavily affect the variability.

  17. Development of the Platysma Muscle and the Superficial Musculoaponeurotic System (Human Specimens at 8–17 Weeks of Development

    Directory of Open Access Journals (Sweden)

    C. De la Cuadra-Blanco

    2013-01-01

    Full Text Available There is controversy regarding the description of the different regions of the face of the superficial musculoaponeurotic system (SMAS and its relationship with the superficial mimetic muscles. The purpose of this study is to analyze the development of the platysma muscle and the SMAS in human specimens at 8–17 weeks of development using an optical microscope. Furthermore, we propose to study the relationship of the anlage of the SMAS and the neighbouring superficial mimetic muscles. The facial musculature derives from the mesenchyme of the second arch and migrates towards the different regions of the face while forming premuscular laminae. During the 8th week of development, the cervical, infraorbital, mandibular, and temporal laminae are observed to be on the same plane. The platysma muscle derives from the cervical lamina and its mandibular extension enclosing the lower part of the parotid region and the cheek, while the SMAS derives from the upper region. During the period of development analyzed in this study, we have observed no continuity between the anlage of the SMAS and that of the superficial layer of the temporal fascia and the zygomaticus major muscle. Nor have we observed any structure similar to the SMAS in the labial region.

  18. [Protozoans in superficial waters and faecal samples of individuals of rural populations of the Montes municipality, Sucre state, Venezuela].

    Science.gov (United States)

    Mora, Leonor; Martínez, Indira; Figuera, Lourdes; Segura, Merlyn; Del Valle, Guilarte

    2010-12-01

    In Sucre state, the Manzanares river is threatened by domestic, agricultural and industrial activities, becoming an environmental risk factor for its inhabitants. In this sense, the presence of protozoans in superficial waters of tributaries of the Manzanares river (Orinoco river, Quebrada Seca, San Juan river), Montes municipality, Sucre state, as well as the analysis of faecal samples from inhabitants of towns bordering these tributaries were evaluated. We collected faecal and water samples from may 2006 through april 2007. The superficial water samples were processed after centrifugation by the direct examination and floculation, using lugol, modified Kinyoun and trichromic colorations. Fecal samples where analyzed by direct examination with physiological saline solution and the modified Ritchie concentration method and using the other colorations techniques above mentioned. The most frequently observed protozoans in superficial waters in the three tributaries were: Amoebas, Blastocystis sp, Endolimax sp., Chilomastix sp. and Giardia sp. Whereas in faecal samples, Blastocystis hominis, Endolimax nana and Entaomeba coli had the greatest frequencies in the three communities. The inhabitants of Orinoco La Peña turned out to be most susceptible to these parasitic infections (77.60%), followed by San Juan River (46.63%) and Quebrada Seca (39.49%). The presence of pathogenic and nonpathogenic protozoans in superficial waters demonstrates the faecal contamination of the tributaries, representing a constant focus of infection for their inhabitants, inferred by the observation of the same species in both types of samples. PMID:21365874

  19. Topical antifungal-corticosteroid combination therapy for the treatment of superficial mycoses: conclusions of an expert panel meeting.

    Science.gov (United States)

    Schaller, Martin; Friedrich, Markus; Papini, Manuela; Pujol, Ramon M; Veraldi, Stefano

    2016-06-01

    Superficial fungal infections affect 20-25% of people worldwide and can cause considerable morbidity, particularly if an inflammatory component is present. As superficial fungal infections can be diverse, the treatment should be tailored to the individual needs of the patient and several factors should be taken into account when deciding on the most appropriate treatment option. These include the type, location and surface area of the infection, patient age, degree of inflammation and underlying comorbidities. Although several meta-analyses have shown that there are no significant differences between the numerous available topical antifungal agents with regard to mycological cure, agents differ in their specific intrinsic properties, which can affect their clinical use. The addition of a corticosteroid to an antifungal agent at the initiation of treatment can attenuate the inflammatory symptoms of the infection and is thought to increase patient compliance, reduce the risk of bacterial superinfection and enhance the efficacy of the antifungal agent. However, incorrect use of antifungal-corticosteroid therapy may be associated with treatment failure and adverse effects. This review summarises available treatment options for superficial fungal infections and provides general treatment recommendations based on the consensus outcomes of an Expert Panel meeting on the topical treatment of superficial mycoses. PMID:26916648

  20. A 7-year survey of superficial and cutaneous mycoses in a public hospital in Natal, Northeast Brazil

    OpenAIRE

    Nicácia Barbosa Calado; Francisco Canindé de Sousa Júnior; Mariana Guimarães Diniz; Ana Cristina Santos Fernandes; Fernando José Ramos Cardoso; Luiz Conrado Zaror; Maria Ângela Fernandes Ferreira; Eveline Pipolo Milan

    2011-01-01

    In the present study, we determined the frequency of superficial and cutaneous mycoses and their etiologic agents during a 7-year period (2002-2008) in Natal, Brazil. A total of 1,717 specimens of skin, nail, and hair were collected from 1,382 patients with suspected mycoses lesions and were then subjected to direct microscopy and culture.

  1. INFLUENCE OF SODIUM GLUTAMATE, BUBBLING N2- GAS AND SUPERFICIAL AERATION ON TETANUS TOXIN PRODUCTION IN Clostridium tetani CULTURES

    Directory of Open Access Journals (Sweden)

    I. Gutiérrez

    2005-12-01

    Full Text Available The influence of sodium glutamate as a supplement to Latham Mueller medium, while using bubbling nitrogen flow as an anaerobic agent and superficial aeration as an inducer of cell lysis and as a mechanism for the haulage of gases in the fermentation processes was evaluated. Using the Clostridium tetani Massachusetts’s strain, several five (5 liter batch fermentations were carried out for tetanus toxin production under the following conditions: Latham Mueller medium, with or without sodium glutamate, nitrogen flow and superficial aeration. The results demonstrated that the addition of sodium glutamate (2.5 g/l, combined with a bubbling nitrogen flow (0.33 l/min and superficial aeration (0.33 l/min, produced a significant increase in cell concentrations, repressing the tetanus toxin formation; while the gas flow (nitrogen and superficial aeration without sodium glutamate improved the toxin production by approximately 49%, providing conditions for the following outcomes: a maximum toxin level of 73 Lf/ml; a toxin formation rate of 1844.0 Lf/l.h; and, an over-all productivity of 833.5 Lf/l.h.

  2. Development Of A Laser Intravascular Fiber Optic Probe For The Treatment Of Superficial Telangiectasia Of The Lower Extremity In Man

    Science.gov (United States)

    Goldman, Leon; Taylor, W. A.

    1984-10-01

    Because of the difficulty of laser treatment of superficial telangiectasia in man, a mini vascular fiberoptics probe has been developed for these vessels. Controls have included sclerotherapy, intravascular-galvanic current probes and direct impacts from 0.2 mm argon fiberoptics probes.

  3. NEW APPROACH FOR TECHNOLOGY OF VOLUMETRIC – SUPERFICIAL HARDENING OF GEAR DETAILS OF THE BACK AXLE OF MOBILE MACHINES

    Directory of Open Access Journals (Sweden)

    A. I. Mihluk

    2010-01-01

    Full Text Available The new approach for technology of volumetric – superficial hardening of gear details of the back axle made of steel lowered harden ability is offered. This approach consisting in formation of intense – hardened condition on all surface of a detail.

  4. Synthesis, characterization, and evaluation of a superficially porous particle with unique, elongated pore channels normal to the surface.

    Science.gov (United States)

    Wei, Ta-Chen; Mack, Anne; Chen, Wu; Liu, Jia; Dittmann, Monika; Wang, Xiaoli; Barber, William E

    2016-04-01

    In recent years, superficially porous particles (SPPs) have drawn great interest because of their special particle characteristics and improvement in separation efficiency. Superficially porous particles are currently manufactured by adding silica nanoparticles onto solid cores using either a multistep multilayer process or one-step coacervation process. The pore size is mainly controlled by the size of the silica nanoparticles and the tortuous pore channel geometry is determined by how those nanoparticles randomly aggregate. Such tortuous pore structure is also similar to that of all totally porous particles used in HPLC today. In this article, we report on the development of a next generation superficially porous particle with a unique pore structure that includes a thinner shell thickness and ordered pore channels oriented normal to the particle surface. The method of making the new superficially porous particles is a process called pseudomorphic transformation (PMT), which is a form of micelle templating. Porosity is no longer controlled by randomly aggregated nanoparticles but rather by micelles that have an ordered liquid crystal structure. The new particle possesses many advantages such as a narrower particle size distribution, thinner porous layer with high surface area and, most importantly, highly ordered, non-tortuous pore channels oriented normal to the particle surface. This PMT process has been applied to make 1.8-5.1μm SPPs with pore size controlled around 75Å and surface area around 100m(2)/g. All particles with different sizes show the same unique pore structure with tunable pore size and shell thickness. The impact of the novel pore structure on the performance of these particles is characterized by measuring van Deemter curves and constructing kinetic plots. Reduced plate heights as low as 1.0 have been achieved on conventional LC instruments. This indicates higher efficiency of such particles compared to conventional totally porous and

  5. Estudio de los trastornos postabdominoplastia de la sensibilidad cutánea superficial

    Directory of Open Access Journals (Sweden)

    S. Mercedes-Acosta

    2013-09-01

    Full Text Available La abdominoplastia es una de las intervenciones quirúrgicas de mayor solicitud por parte de los pacientes dentro de la Cirugía Plástica. Uno de los inconvenientes que pueden presentarse después de su realización es la disminución o pérdida de sensibilidad cutánea de la pared abdominal como consecuencia de la disección de los nervios tóraco-abdominales al elevar el colgajo cutáneo, que se presenta hasta en un 57-72 % de los pacientes. Nuestro objetivo es determinar los trastornos de la sensibilidad cutánea superficial que se producen en el abdomen tras una abdominoplastia y el tiempo necesario para recuperar esa sensibilidad. Realizamos un estudio observacional, prospectivo, de cohorte, en el cual se incluyen 50 pacientes de sexo femenino, en dos grupos: un grupo control, al cual no se le realizó abdominoplastia, constituido por 20 mujeres con edades entre 24-40 años (promedio de 29.6 años y sin cirugías abdominales previas, comorbilidades cutáneas ni sistémicas, y un grupo de estudio compuesto por 30 pacientes de edades comprendidas entre los 22-57 años (promedio de 36.2 años, con características similares a las del grupo control, a las cuales se les realizó abdominoplastia. La evaluación de la pared abdominal se realizó para los diferentes parámetros de la sensibilidad cutánea superficial usando un sistema de división del abdomen en 12 áreas; se examinó el tacto, el dolor, la temperatura (calor y frío y la discriminación de dos puntos antes de la cirugía, a los 3 y a los 6 meses después de la abdominoplastia. Todas nuestras pacientes sometidas a abdominoplastia presentaron alguna alteración de la sensibilidad en comparación con las pacientes del grupo control. Las modalidades de la sensibilidad evaluadas a los 3 y 6 meses en el área 8 presentaron ausencia de respuesta al estímulo excepto para el tacto superficial, que estuvo presente en un 33.3 % a los 6 meses; el área 5 presentó mejoría ante los est

  6. Identificación de aminoácidos libres por cromatografía de capa fina en jugo fresco de naranja (Citrus sinensis L. Osbeck variedad “Valencia”

    Directory of Open Access Journals (Sweden)

    Myrna Luisa Medina Bracamonte

    2013-12-01

    Full Text Available Con el interés de aportar al conocimiento de los aminoácidos libres en el jugo de naranja “Valencia” producido en Venezuela, se propuso aplicar cromatografía de capa fina, al jugo recién extraído de 2 lotes de naranjas “Valencia” adquiridas en mercados locales diferentes de la ciudad de Caracas. El jugo se centrifugó a 960 g (15 min-1. El sobrenadante se homogeneizó con igual volumen de etanol 95 % (v/v, por 3 s y se centrifugó a 900 g (15 min-1. Se ajustó el pH del sobrenadante a 1,7. Se pasó 30 mL del sobrenadante acondicionado a una columna de intercambio iónico de poliestireno activada en forma de H+ (6 x 1,7 cm. El volumen del eluato recogido se evaporó a 40 ºC a vacío hasta sequedad. El residuo seco se suspendió en 2,5 mL de una solución metanol:agua 50:50 (v/v a pH 1,7 y de allí se tomó una muestra de 5 μL con una micropipeta digital Calibra® 822, capacidad 2-20 μL y se aplicó sobre cromatofolios de sílica gel 60 para la cromatografía bidireccional: solvente I, cloroformo:metanol:amoníaco 25 % (v/v 40:40:20; solvente II, fenol:agua 80:20 (m/v. Hubo diferencias en el número de aminoácidos revelados e identificados entre los jugos de ambos lotes. Ambos cromatogramas coincidieron en 8 de los aminoácidos revelados: ácido aspártico, serina, alanina, valina, metionina, prolina, probablemente triptófano y/o fenilalanina y uno no identificado. En ambos predominó prolina y en ambos se identificó el ácido aspártico predominando en el lote 2 en proporción muy similar a la de prolina. El jugo del lote 2 se caracterizó por mayor índice de madurez y de nitrógeno aminoacídico que el jugo del lote 1, en donde el ácido aspártico estuvo en muy baja proporción. También se identificó metionina. Solo en el lote 1 se identificó lisina, ácido glutámico, asparagina y tirosina.

  7. Suscetibilidade antimicrobiana de Staphylococcus spp. isolados de cães com pioderma superficial

    Directory of Open Access Journals (Sweden)

    Ana Paula da Silva

    2014-04-01

    Full Text Available Foram obtidas 154 amostras de lesões cutâneas de cães com pioderma superficial atendidos no Serviço de Dermatologia Veterinária do Hospital Veterinário Universitário (HVU da Universidade Federal de Santa Maria (UFSM, com o objetivo de determinar a suscetibilidade antimicrobiana de isolados de Staphylococcus spp. e avaliar a presença de multirresistência. Após isolamento e identificação, as cepas foram submetidas ao teste de sensibilidade aos antimicrobianos, cujos resultados evidenciaram menores percentuais de resistência à associação amoxicilina e ácido clavulânico (1,9%, cefadroxil (1,9%, cefalexina (1,9% e vancomicina (0,6%. Os maiores percentuais de resistência foram frente à amoxicilina (60,4% e penicilina G (60,4%. A multirresistência foi detectada em 23,4% e a resistência à meticilina em 5,8% das amostras. Pode-se concluir que os isolados de Staphylococcus spp. apresentam elevada suscetibilidade aos antimicrobianos comumente utilizados no tratamento dos piodermas superficiais em cães atendidos no HVU-UFSM, como a cefalexina e a amoxicilina associada ao ácido clavulânico, confirmando a eleição desses fármacos para o tratamento de cães com esta afecção. A suscetibilidade diminuída das cepas frente às fluoroquinolonas, também recomendadas pela literatura para o tratamento de pioderma, permite sugerir que estes fármacos não devem mais ser considerados na seleção empírica. A identificação de Staphylococcus spp. multirresistentes na população canina estudada justifica análises bacteriológicas periódicas e regionais de lesões cutâneas de cães com pioderma superficial, a fim de minimizar a seleção de bactérias resistentes, possíveis falhas terapêuticas e também motiva a antimicrobianoterapia prudente.

  8. Estudio Microestratigráfico de las superficies y su aplicación

    Directory of Open Access Journals (Sweden)

    Pardo San Gil, Diana

    2003-12-01

    Full Text Available As a result of research carried out during the restoration of heritage property, a new way of seeing heritage was developed from the mid 20th century on, a new study methodology which stemmed from the realization that many works of art had undergone gradual transformations over the years. These can now be seen in a stratigraphic sequence that can be studied and read by applying an archaeological and scientific methodology. We know today that buildings were not finished until their walls had been covered, their surfaces painted and their decorative elements polychromed. Before making any decision as to beginning the restoration of any property of cultural importance we need to know how and why the property has been transformed. The polychrome technique allows us to understand how and why surfaces were protected or decorated. All of these preliminary studies should not be external to the restoration but rather form an indispensable part of the whole process.Como consecuencia de las investigaciones llevadas a cabo durante la restauración de Patrimonio, se ha desarrollado a partir de mediados del S. XX una nueva forma de observarlo; una nueva metodología de estudio tras comprobar que muchas obras de arte habían ido sufriendo transformaciones a lo largo del tiempo. Estas acaban apreciándose en una secuencia estratigráfica que ahora podemos estudiar y leer si aplicamos una metodología arqueológica y científica. Hoy sabemos que los edificios no estaban acabados hasta que se recubrían sus muros, se pincelaban sus superficies, se policromaban sus elementos decorativos. Antes de tomar cualquier decisión sobre la intervención de restauración de un bien cultural necesitamos saber cómo y porqué se ha ido transformando. La técnica de correspondencia de policromías nos permite comprender cómo y porqué se protegieron o decoraron las superficies. Todos estos estudios previos no son algo externo a la restauración sino que forman parte

  9. Mapping of superficial extremity veins: normal diameters and trends in a vascular patient-population.

    Science.gov (United States)

    Spivack, Dan E; Kelly, Patrick; Gaughan, John P; van Bemmelen, Paul S

    2012-02-01

    Ultrasonic measurement of superficial extremity veins is a common procedure. To establish normal values for vein-size in a population of vascular patients and to assess if measurements remain unchanged over time, we analyzed a database with results of 28,130 measurements in 2420 separate saphenous and 3206 cephalic veins. Mean size of the great saphenous vein ranges from 2.3 mm to 4.4 mm but did not follow a tapering pattern as is often assumed. The distal calf segment is smaller than the ankle segment. The mean cephalic vein size in the upper arm (2.4 mm) was smaller than at the antecubital level (2.7 mm). A decrease in vein diameter over time was noted in many locations and this reached statistical significance (p < 0.005 for the thigh segment). The clinical significance of this is a need to repeat ultrasonic vein-mapping if more than a year elapses between ultrasound and surgical vein harvest. PMID:22230131

  10. Procedure for creating a three-dimensional (3D) model for superficial hyperthermia treatment planning

    International Nuclear Information System (INIS)

    To make a patient- and treatment-specific computed tomography (CT) scan and to create a three-dimensional (3D) patient model for superficial hyperthermia treatment planning (SHTP). Patients with recurrent breast adenocarcinoma in previously irradiated areas referred for radiotherapy (RT) and hyperthermia (HT) treatment and giving informed consent were included. After insertion of the thermometry catheters in the treatment area, a CT scan in the treatment position was made. A total of 26 patients have been, thus far, included in the study. During the study period, five types of adjustments were made to the procedure: (1) marking the RT field with radioopaque markers, (2) making the CT scan after the first HT treatment instead of before, (3) using an air- and foam-filled (dummy) water bolus, (4) a change to radiolucent catheters for which radioopaque markers were needed, and (5) marking the visible/palpable extent of the tumor with radioopaque markers, if necessary. With these adjustments, all necessary information is visible on the CT scan. Each CT slice was automatically segmented into muscle, fat, bone, and air. RT field, catheters, applicators, and tumor lesions, if indicated, were outlined manually using the segmentation program iSeg. Next the model was imported into SEMCAD X, a 3D electromagnetic field simulator. Using the final procedure to obtain a patient- and treatment-specific CT scan, it is possible to create a 3D model for SHTP.

  11. Estudio del comportamiento tribologico y de las interacciones de superficie de nuevos nanofluidos ionicos

    Science.gov (United States)

    Espinosa Rodriguez, Tulia

    tribocorrosion processes. The formation of a coating layer on magnesium alloys from phosphonate imidazolium ionic liquids by immersion and by chronoamperometry has been described. The new coatings reduce the abrasive wear in the magnesium-aluminium alloy but they are not effective in the magnesium-zinc alloy, which prevent the formation of continuous coatings. Los liquidos ionicos son sales liquidas a temperatura ambiente o bajas temperaturas que presentan excelentes propiedades fisico-quimicas. En el presente trabajo se estudian como lubricantes en problemas tribologicos complejos como la lubricacion de metales contra si mismos, el desarrollo de lubricantes base agua y de nuevas superficies autolubricadas. Cuando no es posible reducir la friccion y desgaste mediante lubricacion, como en las aleaciones de magnesio, los liquidos ionicos se han estudiado como precursores de recubrimientos protectores. Se han determinado las interacciones superficiales y los procesos de corrosion sobre cobre y sobre acero con diferentes liquidos ionicos proticos y aproticos para desarrollar nuevos lubricantes y aditivos. En el contacto cobre/cobre, excepto el liquido ionico protico derivado del oleato, todos los liquidos ionicos estudiados presentan mejor comportamiento tribologico que el lubricante comercial Polialfaolefina 6. En el contacto acero/zafiro, los nuevos liquidos ionicos proticos son buenos lubricantes cuando se utilizan en estado puro, y, como aditivos en agua, generan peliculas adsorbidas sobre la superficie del metal reduciendo la friccion y el desgaste tras la evaporacion del agua. Para evitar el periodo de alta friccion inicial en presencia de agua, se han generado peliculas superficiales de liquido ionico sobre el acero en condiciones estaticas. El mejor comportamiento lubricante tanto en el contacto cobre/cobre como en el contacto acero/zafiro se obtiene para el liquido ionico protico derivado del anion adipato, con dos grupos carboxilicos. Las interacciones de los grupos

  12. Laser scoop desobliteration: a method for minimally invasive remote recanalization of chronically occluded superficial femoral arteries

    Science.gov (United States)

    Heneweer, Carola; Siggelkow, Markus; Helle, Michael; Petzina, Rainer; Wulff, Asmus; Schaefer, Joost P.; Berndt, Rouven; Rusch, Rene; Wedel, Thilo; Klaws, Guenther; Müller-Gerbl, Magdalena; Röcken, Christoph; Jansen, Olav; Lutter, Georg; Cremer, Joachim; Groß, Justus

    2015-02-01

    Stenosis and occlusion of the superficial femoral artery (SFA) are most common in arterial occlusive disease. There are numerous interventional, surgical, and combined approaches to reconstitute maximum blood supply to the lower limb; however, despite intense clinical research, the long-term success rates are still poor. We present the first results with a catheter prototype for laser-based minimal invasive endarterectomy, called laser scoop desobliteration (LSD). The tip of a glass fiber containing a catheter was modified with a spatula head design and connected to an ultraviolet laser. It was tested in cadavers fixed with the Thiel embalming technique preserving tissue consistency, flexibility, and plasticity. After longitudinal arteriotomy of the SFA, a circular dissection between media and adventitia was performed. Then the LSD catheter was inserted and propagated with a progress of 1 mm/s. Afterward, the atheroma core, which showed a plain surface without substantial attaching tissue debris, was removed. Histological examination of the vessel wall showed that the dissection was performed at the media/adventitia interface. In summary, the constructed LSD catheter allowed a rapid and easy way to perform an endarterectomy, thereby offering an innovative approach in the treatment of chronic occluded SFA.

  13. Effect of Superficial Atmospheric Corrosion Upon the Internal Stresses in Structural Steel Elements

    Directory of Open Access Journals (Sweden)

    Monel Leiba

    2006-01-01

    Full Text Available A research program is presented showing the stress status determined by the corrosion phenomenon inside a specimen of a structural steel element. Several stains are studied their diameters ranging from 1~mm to 6~mm and thickness of the corroded layer under 0.5~mm. The physical modeling is the result of testing in laboratory the phenomenon of superficial atmospheric corrosion and the numerical modeling was developed under a FEM program, ALGOR. A number of 3,200 finite elements of BRICK type were created and the evolution of normal and tangential stresses was scrutinized under the process of loosing elementary material transformed into scrap. Stresses in the damaged sphere were graphically put into evidence and determined with accuracy due to the performances of the program, showing the local perturbations and the pattern of stress concentrators. The studies showed the importance of reproducing with both physical and mathematical methods the intricate mechanism and sometimes unpredictable effects of corrosion phenomenon upon the structural steel elements.

  14. Role of fibronectin in intravesical BCG therapy for superficial bladder cancer.

    Science.gov (United States)

    Ratliff, T L; Kavoussi, L R; Catalona, W J

    1988-02-01

    Intravesical bacillus Calmette-Guerin (BCG) has been demonstrated to be effective both for prophylaxis and treatment of superficial bladder cancer. In order to identify the progression of events that result in BCG-mediated antitumor activity, studies were performed to evaluate the mechanism of binding of BCG within the bladder. Histological and quantitative studies in a mouse model revealed that BCG attached to the bladder wall only in areas of urothelial damage. Preliminary in vitro data showed that BCG attached to surfaces coated with extracellular matrix proteins. Further studies were then performed using purified extracellular matrix proteins to identify the proteins responsible for attachment. BCG were observed to attach to surfaces coated only with purified fibronectin (FN) but not to other purified proteins including laminin, collagen or fibrinogen. The attachment of BCG to purified FN in vitro was dose dependent and was inhibited by anti-FN antibodies. Moreover, BCG attachment in vivo to bladders with damaged urothelial surfaces was inhibited more than 95% by anti-FN antibodies, but binding was not affected by anti-laminin antibodies or preimmune serum. A survey of commercially available BCG vaccines (Pasteur, Tice, Glaxo, Connaught) showed that only Glaxo BCG did not attach to FN-coated surfaces. Glaxo BCG also was shown to express inferior antitumor activity suggesting that the absence of FN binding by Glaxo may have been associated with the absence of antitumor activity of the vaccine. PMID:3276931

  15. Iliac Artery Stent Placement Relieves Claudication in Patients with Iliac and Superficial Femoral Artery Lesions

    Energy Technology Data Exchange (ETDEWEB)

    Ichihashi, Shigeo, E-mail: shigeoichihashi@yahoo.co.jp; Higashiura, Wataru; Itoh, Hirofumi; Sakaguchi, Shoji; Kichikawa, Kimihiko [Nara Medical University, Department of Radiology (Japan)

    2013-06-15

    Purpose. To evaluate the efficacy of iliac artery stent placement for relief of claudication in patients with both iliac and superficial femoral artery (SFA) lesions. Methods. Stent placement for only iliac artery occlusive disease was performed in 94 limbs (74 patients) with both iliac and SFA occlusive disease on the same limb. All procedures were performed because intermittent claudication did not improve after continuation of antiplatelet medication therapy and home-based exercise for 3 months. Rutherford classification was 2 in 20 limbs and 3 in 74 limbs. Patients with critical limb ischemia were excluded. Median duration of follow-up was 40 months. Primary patency rates of the iliac stent, clinical improvement rates, and risk factors for requiring additional SFA procedures were evaluated. Results. Primary patency rates of the iliac stent at 1, 3, 5, and 7 years were 97, 93, 79, and 79 %, respectively. The initial clinical improvement rate was 87 %. Continued clinical improvement rates at 1, 3, 5, and 7 years were 87, 81, 69, and 66 %, respectively. SFA Trans-Atlantic Inter-Society Consensus (TASC) II C/D lesion was a significant risk factor for requiring additional SFA procedures. Conclusion. Intermittent claudication was relieved by iliac stent placement in most patients with both iliac and SFA lesions. Thus, the indications for treatment of the SFA intended for claudicants should be evaluated after treatment of the iliac lesion.

  16. Procedure for creating a three-dimensional (3D) model for superficial hyperthermia treatment planning

    Energy Technology Data Exchange (ETDEWEB)

    Linthorst, Marianne; Drizdal, Tomas; Joosten, Hans; Rhoon, Gerard C. van; Zee, Jacoba van der [Hyperthermia Unit, Rotterdam (Netherlands). Erasmus MC Rotterdam

    2011-12-15

    To make a patient- and treatment-specific computed tomography (CT) scan and to create a three-dimensional (3D) patient model for superficial hyperthermia treatment planning (SHTP). Patients with recurrent breast adenocarcinoma in previously irradiated areas referred for radiotherapy (RT) and hyperthermia (HT) treatment and giving informed consent were included. After insertion of the thermometry catheters in the treatment area, a CT scan in the treatment position was made. A total of 26 patients have been, thus far, included in the study. During the study period, five types of adjustments were made to the procedure: (1) marking the RT field with radioopaque markers, (2) making the CT scan after the first HT treatment instead of before, (3) using an air- and foam-filled (dummy) water bolus, (4) a change to radiolucent catheters for which radioopaque markers were needed, and (5) marking the visible/palpable extent of the tumor with radioopaque markers, if necessary. With these adjustments, all necessary information is visible on the CT scan. Each CT slice was automatically segmented into muscle, fat, bone, and air. RT field, catheters, applicators, and tumor lesions, if indicated, were outlined manually using the segmentation program iSeg. Next the model was imported into SEMCAD X, a 3D electromagnetic field simulator. Using the final procedure to obtain a patient- and treatment-specific CT scan, it is possible to create a 3D model for SHTP.

  17. Technology of fabrication of silicon-lithium detector with superficial junction

    International Nuclear Information System (INIS)

    The Silicon nuclear radiation detectors transform the charge produced within the semiconductor crystal, product of the impinges of particles and X rays, in pulses of voltage at the output of the preamplifier. The planar Silicon-Lithium (Si(Li)) detector with superficial junction is basically a Pin structure diode. By mean of the diffusion and drift of Lithium in the Silicon a compensated or depletion region was created. There the incident radiation interacts with the Silicon, producing an electric signal proportional to the detector's energy deposited in the semiconductor. The technological process of fabrication this kind of detectors comprises several stages, some of them complex and of long duration. They also demand a systematic control. The technological process of Si(Li) detector's fabrication was carried out. The detector's fabrication electric characteristics were measured in some steps. An obtained device was mounted in the holder within a cryostat, in order to work to temperature of the liquid nitrogen. The energy resolution of the detector was measured and the value was 180 eV for the line of 5.9 KeV of an Fe-55 source. This value has allowed to work with the detector in energy disperse X-rays fluorescence. (author)

  18. Endoscopic submucosal tunnel dissection for large superficial esophageal squamous cell neoplasms.

    Science.gov (United States)

    Zhai, Ya-Qi; Li, Hui-Kai; Linghu, En-Qiang

    2016-01-01

    Endoscopic submucosal dissection (ESD) is a well-established treatment for superficial esophageal squamous cell neoplasms (SESCNs) with no risk of lymphatic metastasis. However, for large SESCNs, especially when exceeding two-thirds of the esophageal circumference, conventional ESD is time-consuming and has an increased risk of adverse events. Based on the submucosal tunnel conception, endoscopic submucosal tunnel dissection (ESTD) was first introduced by us to remove large SESCNs, with excellent results. Studies from different centers also reported favorable results. Compared with conventional ESD, ESTD has a more rapid dissection speed and R0 resection rate. Currently in China, ESTD for large SESCNs is an important part of the digestive endoscopic tunnel technique, as is peroral endoscopic myotomy for achalasia and submucosal tunnel endoscopic resection for submucosal tumors of the muscularis propria. However, not all patients with SESCNs are candidates for ESTD, and postoperative esophageal strictures should also be taken into consideration, especially for lesions with a circumference greater than three-quarters. In this article, we describe our experience, review the literature of ESTD, and provide detailed information on indications, standard procedures, outcomes, and complications of ESTD. PMID:26755889

  19. Optimizing topical antifungal therapy for superficial cutaneous fungal infections: focus on topical naftifine for cutaneous dermatophytosis.

    Science.gov (United States)

    Del Rosso, James Q; Kircik, Leon H

    2013-11-01

    Superficial cutaneous fungal infections (SCFIs) are commonly encountered in clinical practice in the United States, and comprise infections of the skin by dermatophytes and yeasts. The most common organisms causing SCFI are dermatophytes, especially Trichophyton spp. With the exception of onchomycosis and tinea capitis, most cases of SCFIs are amenable to properly selected topical antifungal therapy used over an adequate period of time. A variety of topical antifungal agents are available for the treatment of SCFIs, and they encompass a few major chemical classes: the polyenes (ie, nystatin), imidazoles (ie, ketoconazole, econazole, oxiconazole, etc), allylamines (ie, naftifine, terbinafine), benzylamines (ie, butenafine), and hydroxypyridones (ie, ciclopirox). The 2 major classes that represent the majority of available topical antifungal agents are the azoles and the allylamines. Overall, the allylamines are superior to the azoles in activity against dermatophytes, although both are clinically effective. The reverse is true against yeasts such as Candida spp and Malassezia spp, although topical allylamines have proven to be efficacious in some cases of tinea versicolor and cutaneous candidiasis. Naftifine, a topical allylamine, is fungicidal in vitro against a wide spectrum of dermatophyte fungi and has been shown to be highly effective against a variety of cutaneous dermatophyte infections. Rapid onset of clinical activity and favorable data on sustained clearance of infection have been documented with naftifine. The more recent addition of naftifine 2% cream has expanded the armamentarium, with data supporting a clinically relevant therapeutic reservoir effect after completion of therapy. PMID:24196340

  20. Efficient construction of robust artificial neural networks for accurate determination of superficial sample optical properties.

    Science.gov (United States)

    Chen, Yu-Wen; Tseng, Sheng-Hao

    2015-03-01

    In general, diffuse reflectance spectroscopy (DRS) systems work with photon diffusion models to determine the absorption coefficient μa and reduced scattering coefficient μs' of turbid samples. However, in some DRS measurement scenarios, such as using short source-detector separations to investigate superficial tissues with comparable μa and μs', photon diffusion models might be invalid or might not have analytical solutions. In this study, a systematic workflow of constructing a rapid, accurate photon transport model that is valid at short source-detector separations (SDSs) and at a wide range of sample albedo is revealed. To create such a model, we first employed a GPU (Graphic Processing Unit) based Monte Carlo model to calculate the reflectance at various sample optical property combinations and established a database at high speed. The database was then utilized to train an artificial neural network (ANN) for determining the sample absorption and reduced scattering coefficients from the reflectance measured at several SDSs without applying spectral constraints. The robustness of the produced ANN model was rigorously validated. We evaluated the performance of a successfully trained ANN using tissue simulating phantoms. We also determined the 500-1000 nm absorption and reduced scattering spectra of in-vivo skin using our ANN model and found that the values agree well with those reported in several independent studies. PMID:25798300

  1. Identification of gene expression patterns in superficial and invasive human bladder cancer

    DEFF Research Database (Denmark)

    Andersen, Thomas Thykjær; Workman, Christopher; Kruhøffer, Mogens;

    2001-01-01

    Multiple transcriptional events take place when normal urothelium is transformed into tumor tissue. These can now be monitored simultaneously by the use of oligonucleotide arrays, and expression patterns of superficial and invasive tumors can be established. Single-cell suspensions were prepared ...... patterns may be identified in bladder cancer by combining oligonucleotide arrays and cluster analysis. These patterns give new biological insight and may form a basis for the construction of molecular classifiers and for developing new therapy for bladder cancer....... genes. The obtained expression data were sorted according to a weighting scheme and were subjected to hierarchical cluster analysis of tissues and genes. Northern blotting was used to verify the array data, and immunohistology was used to correlate between RNA and protein levels. Hierarchical clustering...... of samples correctly identified the stage using both 4076 genes and a subset of 400 genes covarying with the stages and grades of tumors. Hierarchical clustering of gene expression levels identified several stage-characteristic, functionally related clusters, encoding proteins that were related to...

  2. [In vitro susceptibility of isolates of Scytalidium spp. from superficial lesions against posaconazole].

    Science.gov (United States)

    Dunand, J; Paugam, A

    2008-07-01

    Scytalidium spp. is a dematiaceous fungi that has been frequently reported from tropical to semi subtropical regions. We distinguish two pathogenic species: S. dimidiatum and S. hyalinum which is an homologous non-pigmented mutant of S. dimidiatum. This keratinophilic mold may produce superficial disease (skin, nails) indistinguishable from dermatophytes. In Martinique, this pseudodermatophyte could represent more than 50 % of onychomycosis. Contrary to dermatophytes, the clinical response of Scytalidium spp. are typically very poor and topical treatment or systemic agents ineffective. To evaluate the potential efficacy of the new antifungal agent posaconazole, we tested in vitro 12 clinical isolates of Scytalidium spp. (seven S. dimidiatum and five S. hyalinum) against posaconazole by Etest method. For the totality of the isolates, the minimum inhibitory concentrations (MICs) were low: MICs less or equal to 0.25 microg/ml (maximum MICs of 0.25 microg/ml for S. dimidiatum and 0.032 microg/ml for S. hyalinum). These in vitro efficacy suggest that the new agent posaconazole may be a future alternative treatment. PMID:18325689

  3. Expression of matrix metalloproteinases 2 and 9 in human gastric cancer and superficial gastritis

    Directory of Open Access Journals (Sweden)

    Clara Luz Sampieri, Sol de la Peña, Mariana Ochoa-Lara, Roberto Zenteno-Cuevas, Kenneth León-Córdoba

    2010-03-01

    Full Text Available AIM: To assess expression of matrix metalloproteinases 2 (MMP2 and MMP9 in gastric cancer, superficial gastritis and normal mucosa, and to measure metalloproteinase activity.METHODS: MMP2 and MMP9 mRNA expression was determined by quantitative real-time polymerase chain reaction. Normalization was carried out using three different factors. Proteins were analyzed by quantitative gelatin zymography (qGZ.RESULTS: 18S ribosomal RNA (18SRNA was very highly expressed, while hypoxanthine ribosyltransferase-1 (HPRT-1 was moderately expressed. MMP2 was highly expressed, while MMP9 was not detected or lowly expressed in normal tissues, moderately or highly expressed in gastritis and highly expressed in cancer. Relative expression of 18SRNA and HPRT-1 showed no significant differences. Significant differences in MMP2 and MMP9 were found between cancer and normal tissue, but not between gastritis and normal tissue. Absolute quantification of MMP9 echoed this pattern, but differential expression of MMP2 proved conflictive. Analysis by qGZ indicated significant differences between cancer and normal tissue in MMP-2, total MMP-9, 250 and 110 kDa bands.CONCLUSION: MMP9 expression is enhanced in gastric cancer compared to normal mucosa; interpretation of differential expression of MMP2 is difficult to establish.

  4. Superficial social inclusion? Reflections from first-time distance learners. A Practice Report

    Directory of Open Access Journals (Sweden)

    Mark Brown

    2012-08-01

    Full Text Available This paper reports on a research project that sought to investigate the experiences of first-time distance learners from their own perspectives, in their own words, through weekly video diaries. The research took place against a background of growing concern about low retention and completion rates among distance students, which raises questions about what actually happens to learners once they begin their study. While the project will ultimately generate evidence-based deliverables targeted at both distance education providers and distance learners, this paper reports on a selection of learner stories that highlight the nature of superficial social inclusion in the absence of support and engagement strategies that reach out at the point of need throughout the study lifecycle. The research challenges educators to reflect on the difficulties of supporting distance students to engage effectively with study amid other life and work commitments, at the same time as being mindful that to survive the distance they need to be independent, self-motivated learners.

  5. Plasma amino acid concentrations in 36 dogs with histologically confirmed superficial necrolytic dermatitis.

    Science.gov (United States)

    Outerbridge, Catherine A; Marks, Stanley L; Rogers, Quinton R

    2002-08-01

    Plasma amino acid concentrations were measured in 36 dogs diagnosed with superficial necrolytic dermatitis (SND) via skin biopsy. The median age of the dogs was 10 years, and 27 out of 36 (75%) were male. Twenty-two out of 36 (61%) of the dogs were accounted for by six breeds; West Highland white terriers (six), Shetland sheepdogs (five), cocker spaniels (four), Scottish terriers (three), Lhasa apsos (two) and Border collies (two). The mean concentration (+/- standard deviation) was calculated for each measured plasma amino acid and compared to previously documented concentrations of plasma amino acids measured in dogs with acute and chronic hepatitis. The ratio of branched chain amino acids to aromatic amino acids in the dogs with SND was 2.6, slightly lower than that in normal dogs. The mean plasma amino acid concentrations for dogs with SND were significantly lower than for dogs with acute and chronic hepatitis. A metabolic hepatopathy in which there is increased hepatic catabolism of amino acids is hypothesized to explain the hypoaminoacidaemia seen in SND. PMID:12174180

  6. In vivo imaging of superficial femoral artery (SFA) stents for deformation analysis

    Science.gov (United States)

    Ganguly, A.; Schneider, A.; Keck, B.; Bennett, N. R.; Fahrig, R.

    2008-03-01

    A high-resolution (198 μm) C-arm CT imaging system (Axiom Artis dTA, Siemens Medical Solutions, Forchheim, Germany) was optimized for imaging superficial femoral artery (SFA) stents in humans. The SFA is susceptible to the development of atherosclerotic lesions. These are typically treated with angioplasty and stent deployment. However, these stents can have a fracture rate as high as 35%. Fracture is usually accompanied by restenosis and reocclusion. The exact cause of breakage is unknown and is hypothesized to result from deforming forces due to hip and knee flexion. Imaging was performed with the leg placed in both straight and bent positions. Projection images obtained during 20 s scans with ~200° of rotation of the C-arm were back-projected to obtain 3D volumes. Using a semi-automatic software algorithm developed in-house, the stent centerlines were found and ellipses were fitted to the slice normals. Image quality was adequate for calculations in 11/13 subjects. Bending the leg was found to shorten the stents in 10/11 cases with the maximum change being 9% (12 mm in a 133 mm stent), and extend the stent in one case by 1.6%. The maximum eccentricity change was 36% with a bend angle of 72° in a case where the stent extended behind the knee.

  7. Photodynamic therapy: development of a treatment and dosimetry system adapted to superficial tumors of the bladder

    Science.gov (United States)

    Lignon, Dominique; Jaboin, Y.; Wolf, D.; Meunier-Reynes, Anne; Guillemin, Francois H.

    1993-06-01

    Superficial tumors of the bladder or in situ carcinoma could be interesting indications of Photodynamic Therapy (PDT), since a total mutilating cystectomy could be avoided. The plurifocality of the lesions requires a treatment of the whole mucose; the quantity of light energy must be homogenous and sufficient to induce a therapeutic effect, still non toxic for normal tissues. We therefore developed a system of treatment and intravesical dosimetry control so that the operator can have precise information on the light repartition in the bladder in real time to enable him to optimize the positioning of the irradiation source. This intravesical device consists of twelve light sensors with optical fiber distributed symmetrically against the walls of the bladder; the emitting source is constituted of a scattering isotropic sphere. The signals emitted by the sensors are converted into tension. The acquisition part of the system values consists of two parts : an analogic part, the values are multiplexed on a same oscilloscope track to see in real time their evolution according to the position of the emitting source. The other part is constituted by the numeric acquisition of values for further analysis. We developed, from a mathematical modelisation of the bladder, a centering program of the diffusor that indicates its position in the bladder, as well as a cartography program where the bladder is re-built by interpolation with the different lighting levels.

  8. Two cases of superficial esophageal cancer after chemoradiation treatment for lung cancer

    International Nuclear Information System (INIS)

    We report two cases of superficial esophageal cancer after chemoradiation treatment (CRT) for lung cancer. A 74-year-old man had a type 0-IIc cancer of the upper thoracic esophagus 12 years after CRT, including 45-Gy irradiation, for left lung small cell cancer. Transthoracic esophagectomy was performed, and pathological examination revealed that the tumor was squamous cell carcinoma invading the submucosal layer (SM3) without nodal metastasis. He has had no recurrence of esophageal cancer for more than 3.5 years since the operation. A 61-year-old man had a type 0-IIc cancer of the upper thoracic esophagus 20 years after CRT, including 60-Gy irradiation, for left lung small cell cancer. Transthoracic esophagectomy was performed, and pathological examination revealed that the tumor was squamous cell carcinoma invading the submucosal layer (SM2) without nodal metastasis. He has had no recurrence of esophageal cancer for more than 2 years. A possible causal relationship between the previous CRT and the two esophageal cancers was suspected. The treatment strategy for patients after CRT should be carefully decided based on the patient's general status. In surgery, scarring and blood circulation disorders of the organs in the irradiated field should be taken into consideration. (author)

  9. Techniques of effective external hyperthermia treatment of superficial tumors of the tracheastoma

    International Nuclear Information System (INIS)

    In the treatment of superficial tumors of the tracheastoma with external microwaves, it is clearly of critical importance that the method of coupling of microwave power to the treatment area permits sufficient flow of air to the stoma. However, standard techniques of coupling employed in this application invariably distort the SAR patterns of conventional microwave applicators, resulting in cold spots near the stoma. To improve the delivery of thermotherapy in the treatment of peritracheastomal tumors, the authors designed and tested an improved applicator and coupling pad. The applicator is a foreshortened microwave device employing a loop antenna, that is capable of producing maximum SAR around the stoma and of permitting adequate air flow to that region. The coupling pad employs deionized water, incorporates a channel for air flow and guarantees a minimum of at least 1 cm of water between the applicator and the patient. Details of performance characteristics of the applicator are presented. Design and clinical utilization of the coupling pad is also discussed

  10. Superficial temporal artery to proximal posterior cerebral artery bypass through the anterior temporal approach

    Directory of Open Access Journals (Sweden)

    Satoru Takeuchi

    2015-01-01

    Full Text Available Background: The superficial temporal artery (STA to proximal posterior cerebral artery (PCA (P2 segment bypass is one of the most difficult procedures to perform because the proximal PCA is located deep and high within the ambient cistern. STA to proximal PCA bypass is usually performed through a subtemporal approach or posterior transpetrosal approach, and rarely through a transsylvian approach. The aim of this study was to describe the operative technique of STA to proximal PCA bypass through a modified transsylvian approach (anterior temporal approach. Methods: STA to proximal PCA bypass was performed through an anterior temporal approach in three patients with intracranial aneurysm. We describe the details of the surgical technique. Results: The STA was successfully anastomosed to the proximal PCA in all cases. One patient suffered hemiparesis and aphasia due to infarction in the anterior thalamoperforating artery territory. Conclusions: STA to proximal PCA bypass can be performed through an anterior temporal approach in selected patients. We recommend that every precaution, including complete hemostasis, placement of cellulose sponges beneath the recipient artery to elevate the site of the anastomosis, and placement of a continuous drainage tube at the bottom of the operative field to avoid blood contamination during the anastomosis, should be taken to shorten the temporary occlusion time.

  11. Comparison of 30% salicylic acid with jessner's solution for superficial chemical peeling in epidermal melasma

    International Nuclear Information System (INIS)

    To compare the efficacy and safety of Jessner's solution with 30% salicylic acid as superficial chemical peeling agents in treating epidermal melasma in Asian skin. Sixty consenting patients with epidermal melasma were randomly divided into two groups. Group A was treated with Jessner's solution and Group B with 30% salicylic acid. Baseline Melasma Area Severity Index (MASI) score was noted and peeling started at 2-weekly intervals. Sunscreen in morning and moisturizer at night were prescribed in all patients. MASI score and adverse effects were recorded biweekly. Treatment was stopped at 12 weeks and patients were followed-up at 4 weekly intervals for further 12 weeks. Final MASI score and adverse effects were noted at the end of follow-up period. Mean MASI scores were compared using paired sample t-test and one-way ANOVA. Difference in baseline, treatment end and follow-up end MASI scores was not statistically significant between the two groups (p=0.54, 0.26, and 0.55 respectively). On the other hand, within group analysis of difference between pre and posttreatment MASI score was highly significant in both groups (p < 0.0001). Adverse effects were mild and comparable in both groups. Jessner's solution and 30% salicylic acid are equally effective and safe peeling agents for use in epidermal melasma in Asian skin. (author)

  12. Superficial siderosis due to dural defect with thoracic spinal cord herniation.

    Science.gov (United States)

    Boncoraglio, Giorgio B; Ballabio, Elena; Erbetta, Alessandra; Prada, Francesco; Savoiardo, Mario; Parati, Eugenio A

    2012-01-15

    Superficial siderosis (SS) of the central nervous system is a rare disorder caused by chronic or recurrent hemorrhages into the subarachnoid space with hemosiderin and ferritin deposition, which leads to neuronal damage. The source of bleeding remains unknown in 50% of cases. Recently, attention has been focused on fluid-filled collection in the spinal canal, suggesting the presence of a dural defect which may be the bleeding point. We present a patient with SS and spinal extradural fluid collection due to midthoracic dural defect with spinal cord herniation. The reduction of the spinal cord herniation and the repair of the dural defect resulted in the disappearance of the fluid collection and cerebrospinal fluid abnormalities. The case here reported is, to our knowledge, the first case of spinal cord herniation presenting with SS and confirms the key role played by dural lacerations in the pathogenesis of both SS and spinal cord herniation. The search for dural lacerations should be one of the primary aims in patients with SS. PMID:21868040

  13. Superficial temporal artery pseudoaneurysm presenting as a growing, pulsatile, and tender mass

    Science.gov (United States)

    Seferi, Arsen; Alimehmeti, Ridvan; Pajaj, Ermira; Vyshka, Gentian

    2016-01-01

    Background: Superficial temporal artery (STA) pseudoaneurysms have been reported in the literature since the mid of seventeenth century from Bartholin, however, there is an increasing number of cases, suggesting a diversity of etiological factors. Among these, traumatic events, even of an iatrogenic nature, have been identified as causative factors for nonspontaneous STA pseudoaneurysms. Regional pain and tenderness, troublesome pulsations of the mass, cosmetic concerns as well as the risk of bleeding warrant a thorough evaluation and a definite interventional approach to the condition. Case Description: A 21-year-old Caucasian male searched medical advice for a growing, tender, and pulsatile mass on his right temple, with isolated and short episodes of lancinating sensations, after sustaining a blunt trauma following a hit with a stick half a year before the admission. Enhanced cranial computed tomography and angiography confirmed the diagnosis of an STA pseudoaneurysm. A direct percutaneous aspiration, as well as ultrasonography, was performed prior to the neurosurgical intervention, with the complete removal of the mass. Conclusions: STA pseudoaneurysms require a careful evaluation and a conclusive approach in order to avoid the risk of a growing mass and other nonremote complications such as bone erosions and bleeding. Different treatment options are available, including endovascular obliteration and embolization, however, surgical removal after ligation of the afferent and efferent segments of the vessel seem to be highly effective.

  14. Formación de capa híbrida al cementar postes metálicos y de fibra de vidrio en dientes tratados endodónticamente Hybrid layer formation using metal post and fiber post into endodontically trated canal roots

    Directory of Open Access Journals (Sweden)

    V. Valenzuela Aránguiz

    2010-04-01

    Full Text Available Se evaluó al microscopio electrónico de barrido (MEB la efectividad de la adhesión lograda dentro de conductos tratados utilizando dos sistemas adhesivos, uno de fotocurado (Single Bond y otro dual (Prime & Bond NT + Self-Cure Activator y dos sistemas de postes (fibra de vidrio y metálicos. El objetivo fue evaluar la formación de capa híbrida y tags de resina al interior de los conductos radiculares. Método: Doce piezas dentarias fueron preparadas para recibir un poste. Se dividieron en dos grupos de 6 piezas, a cada uno de los cuales se les colocó un tipo de poste. Ambos grupos fueron subdivididos en dos, aplicándoles distintos adhesivos, la resina de cementación RelyX ARC y el poste correspondiente. Las muestras fueron cortadas longitudinalmente y preparadas para la observación al MEB. Resultados: No se evidenciaron diferencias en cuanto al espesor de la capa híbrida entre los grupos. Se concluye que la capa híbrida y tags de resina formados dentro de los conductos utilizando ambos sistemas de postes y diferentes sistemas adhesivos, no son satisfactorios.The goal of this study was to evaluate the adhesive effectiveness attained in root canals endodontically treated with a scanning electronic microscope (SEM. We used two adhesive systems (Single Bond and Prime&Bond NT + Self Cure Activator and two post systems (fiberglass and metallic. The main objective was to evaluate the hybrid layer and resin tag formation inside each root canal. Twelve teeth were used, which were prepared for receiving the post. The teeth were divided into two groups of 6 pieces each. Each group received one type of post. In turn, each group was subdivided in two (a total of 4, receiving different adhesives, the cementation resin RelyX ARC and the corresponding post. The samples were cut longitudinally and prepared to be scrutinized with the microscope. The results showed that the adhesion inside the canal roots was not reliable. No difference regarding the

  15. Evaluación del efecto de la intensidad de labranza en la formación de costra superficial de un oxisol de sabana en los Llanos Orientales de Colombia: III. Caracterizacion micromorfológica en superficie.

    Directory of Open Access Journals (Sweden)

    Jesús H Galvis

    2008-01-01

    Full Text Available Para entender los cambios que ocurrieron en la superficie del suelo en diferentes sistemas de maíz y pastos se hizo necesario observar su microestructura utilizando metodologías de diversa índole como secciones delgadas y microscopia electrónica de barrido. Se constataron cambios importantes en la fábrica del suelo con los sistemas introducidos comparados con sabana y bosque..

  16. Observation of an improved healing process in superficial skin wounds after irradiation with a blue-LED haemostatic device.

    Science.gov (United States)

    Cicchi, Riccardo; Rossi, Francesca; Alfieri, Domenico; Bacci, Stefano; Tatini, Francesca; De Siena, Gaetano; Paroli, Gaia; Pini, Roberto; Pavone, Francesco S

    2016-06-01

    The healing process of superficial skin wounds treated with a blue-LED haemostatic device is studied. Four mechanical abrasions are produced on the back of 10 Sprague Dawley rats: two are treated with the blue-LED device, while the other two are left to naturally recover. Visual observations, non-linear microscopic imaging, as well as histology and immunofluorescence analyses are performed 8 days after the treatment, demonstrating no adverse reactions neither thermal damages in both abraded areas and surrounding tissue. A faster healing process and a better-recovered skin morphology are observed: the treated wounds show a reduced inflammatory response and a higher collagen content. Blue LED induced photothermal effect on superficial abrasions. PMID:26756549

  17. Nanoparticles superficial density of charge in electric double-layered magnetic fluid: A conductimetric and potentiometric approach

    Science.gov (United States)

    Campos, A. F. C.; Tourinho, F. A.; da Silva, G. J.; Lara, M. C. F. L.; Depeyrot, J.

    2001-09-01

    We analyze potentiometric and conductimetric measurements simultaneously performed on Electric Double-Layer Magnetic Fluid based on cobalt ferrite nanoparticles, in order to obtain the pH-dependence of the particle surface charge density. We propose a mechanism for the charging of the particle surface. This model considers the ferrofluid solution as a mixture of strong and weak diprotic acids. We show how an exact analytical treatment involving proton transfer between the particle surface and the bulk solution allows the construction of a speciation diagram of the charged superficial sites. The saturation value of the superficial density of charge is found to be equal to 0.326 ± 0.065 C m^{-2}.

  18. La tensión superficial y su relación con la compresibilidad isotérmica local

    OpenAIRE

    Vila, Mario Alberto

    1989-01-01

    Mas allá de las leyes termodinámicas y microscópicas que involucran propiedades superficiales, se han desarrollado relaciones empíricas y semiempíricas que vinculan cantidades superficiales con propiedades de las fases homogéneas. También la tensión superficial ha sido correlacionada con propiedades tales como: índice de refracción, entalpía de vaporización y viscosidad. Pero la más importante y más extensamente estudiada es la relación que vincula la tensión superficial isotérmica del líquid...

  19. Adsorción superficial en las mezclas de dodecilsulfato sódico y nonilfenol oxietilenado con diferentes grados de oxietilenación.

    OpenAIRE

    Carrión Fité, Francisco Javier

    1991-01-01

    La efectividad de la adsorción superficial en las disoluciones acuosas de las mezclas de tensioactivos compuestas por el tensioactivo aniónico dodecilsulfato sódico mezclado con el tensioactivo no-iónico nonilfenol oxietilenado, fue estudiada en comparación con el comportamiento de estos tensioactivos por separado. Esta adsorción superficial fue caracterizada a partir de los valores de la tensión superficial, a 25°C de las concentraciones totales inferiores a la c.m.c. de dichas mezclas, en f...

  20. La superficie específica foliar en genotipos del género Triticum y su relación con el intercambio gaseoso

    OpenAIRE

    Roberto R. Filgueira; Sarli, Guillermo O.; Jatimliansky, Jaime; Fournier, Lidia L.; Golik, Silvina Inés

    1998-01-01

    Se determinaron experimentalmente la superficie específica (área superficial por unidad de masa), la tasa fotosintética aparente máxima y la conductancia al vapor de agua de la hoja bandera de cuatro cultivares de Triticum aestivum, uno de Triticum spelta y otro de Triticum dicoccum, cultivados en invernáculo, con la finalidad de establecer la interacción entre estos parámetros, en condiciones de riego normal y de estrés hídrico. Los valores de superficie específica, medidos por adsorción de ...

  1. MRI of superficial soft tissue masses: analysis of features useful in distinguishing between benign and malignant lesions

    Energy Technology Data Exchange (ETDEWEB)

    Calleja, Michele; Dimigen, Marion; Saifuddin, Asif [Royal National Orthopaedic Hospital, Stanmore (United Kingdom)

    2012-12-15

    To identify the MRI features of superficial soft tissue masses, that may allow differentiation between malignant and non-malignant lesions. A total of 136 consecutive patients referred to a supra-regional musculoskeletal oncology center over a 10-year period with the diagnosis of a superficial soft tissue mass were included in this retrospective study. Features analyzed included patient demographics, lesion size, MRI signal characteristics, margins, lobulation, hemorrhage, necrosis, fascial edema, relationship to the fascia, as well as involvement of the skin. Comparison was then made with the final histological diagnosis. Of the patients reviewed, 58 were male and 78 were female, and the mean age was 49.9 years. The mean age for malignant lesions was 57.9 years, and that for non-neoplastic and benign conditions 41.9 years (p < 0.001). A significant relationship was identified between malignancy and lobulation (p < 0.01), hemorrhage (p < 0.001), fascial edema (p < 0.001), hemorrhage (p < 0.0001) and necrosis (p < 0.001). The relationship between skin thickening and skin contact and malignancy was also found to be significant. However, size was not found to be an important determining factor for malignancy, with a significant proportion of malignant superficial sarcomas measuring less than 5 cm in maximal diameter. This study has shown that a significant proportion of malignant superficial sarcomas measured less than 5 cm in maximal diameter. Fascial edema, skin thickening, skin contact, hemorrhage, and necrosis were found to be highly significant factors indicative of malignancy. Lobulation and peritumoral edema were also significant MRI features. (orig.)

  2. Differentiation between Superficial and Deep Lobe Parotid Tumors by Magnetic Resonance Imaging: Usefulness of the Parotid Duct Criterion

    International Nuclear Information System (INIS)

    Background: The location of a parotid tumor affects the choice of surgery, and there is a risk of damaging the facial nerve during surgery. Thus, differentiation between superficial and deep lobe parotid tumors is important for appropriate surgical planning. Purpose: To evaluate the usefulness of using the parotid duct, in addition to the retromandibular vein, for differentiating between superficial and deep lobe parotid tumors on MR images. Material and Methods: Magnetic resonance images of 42 parotid tumors in 40 patients were reviewed to determine whether the tumor was located in the superficial or deep lobe. In each case, the retromandibular vein and the parotid duct were used to locate the tumor. The parotid duct was only used in cases where the tumor and the duct were visualized on the same image. Results: Using the retromandibular vein criterion, 71% of deep lobe and 86% of superficial lobe tumors were correctly diagnosed, providing an accuracy of 81%. However, the accuracy achieved when using the parotid duct criterion was 100%, although it could be applied to only 28 of the 42 cases. Based on these results, we defined the following diagnostic method: the parotid duct criterion is first applied, and for cases in which it cannot be applied, the retromandibular vein criterion is used. The accuracy of this method was 88%, which was better than that achieved using the retromandibular vein criterion alone. Conclusion: The parotid duct criterion is useful for determining the location of parotid tumors. Combining the parotid duct criterion with the retromandibular vein criterion might improve the diagnostic accuracy of parotid tumor location compared to using the latter criterion alone

  3. Differentiation between Superficial and Deep Lobe Parotid Tumors by Magnetic Resonance Imaging: Usefulness of the Parotid Duct Criterion

    Energy Technology Data Exchange (ETDEWEB)

    Imaizumi, A.; Kuribayashi, A.; Okochi, K.; Yoshino, N.; Kurabayashi, T. (Oral and Maxillofacial Radiology, Graduate School, Tokyo Medical and Dental Univ., Tokyo (Japan)); Ishii, J. (Maxillofacial Surgery, Graduate School, Tokyo Medical and Dental Univ., Tokyo (Japan)); Sumi, Y. (Division of Oral and Dental Surgery, Dept. of Advanced Medicine, National Center for Geriatrics and Gerontology, Aichi (Japan))

    2009-08-15

    Background: The location of a parotid tumor affects the choice of surgery, and there is a risk of damaging the facial nerve during surgery. Thus, differentiation between superficial and deep lobe parotid tumors is important for appropriate surgical planning. Purpose: To evaluate the usefulness of using the parotid duct, in addition to the retromandibular vein, for differentiating between superficial and deep lobe parotid tumors on MR images. Material and Methods: Magnetic resonance images of 42 parotid tumors in 40 patients were reviewed to determine whether the tumor was located in the superficial or deep lobe. In each case, the retromandibular vein and the parotid duct were used to locate the tumor. The parotid duct was only used in cases where the tumor and the duct were visualized on the same image. Results: Using the retromandibular vein criterion, 71% of deep lobe and 86% of superficial lobe tumors were correctly diagnosed, providing an accuracy of 81%. However, the accuracy achieved when using the parotid duct criterion was 100%, although it could be applied to only 28 of the 42 cases. Based on these results, we defined the following diagnostic method: the parotid duct criterion is first applied, and for cases in which it cannot be applied, the retromandibular vein criterion is used. The accuracy of this method was 88%, which was better than that achieved using the retromandibular vein criterion alone. Conclusion: The parotid duct criterion is useful for determining the location of parotid tumors. Combining the parotid duct criterion with the retromandibular vein criterion might improve the diagnostic accuracy of parotid tumor location compared to using the latter criterion alone

  4. Superficial mycoses at the Hospital do Servidor Público Municipal de São Paulo between 2005 and 2011*

    OpenAIRE

    Chiacchio, Nilton Di; Madeira, Celso Luiz; Humaire, Caio Rosa; Silva, Camila Simon; Fernandes, Lucia Helena Gomes; Reis, Ana Lucia Dos

    2014-01-01

    BACKGROUND Superficial mycoses are fungal infections limited to the outermost layers of the skin. Dermatophytic filamentous fungi and yeasts are the major causative agents of these mycoses. Dermatophytosis is one of the clinical conditions caused by fungal infections most commonly found in dermatological practice. Thus, knowledge of the ecology of dermatophytes provides a better understanding of the natural history of dermatophytosis. OBJECTIVE This study aimed to investigate epidemiological ...

  5. Systemic BCG-Osis as a Rare Side Effect of Intravesical BCG Treatment for Superficial Bladder Cancer

    OpenAIRE

    Lukacs, S.; B. Tschobotko; Szabo, N. A.; Andrew Symes

    2013-01-01

    Intravesical Bacilli Calmette-Guérin (BCG) immunotherapy is a commonly used treatment for superficial bladder cancer. Although the treatment is well tolerated in 95% of cases, life-threatening side effects including BCG sepsis can occur. This report describes the case of an 82-year-old man with a background of lung disease. He developed septic shock and type two respiratory failure after receiving the sixth installation of intravesical BCG (TICE strain) immunotherapy for recurrent bladder Tra...

  6. DNA Microarray Based on Arrayed-Primer Extension Technique for Identification of Pathogenic Fungi Responsible for Invasive and Superficial Mycoses▿

    OpenAIRE

    Campa, Daniele; Tavanti, Arianna; Gemignani, Federica; Mogavero, Crocifissa S.; Bellini, Ilaria; Bottari, Fabio; Barale, Roberto; Landi, Stefano; Senesi, Sonia

    2007-01-01

    An oligonucleotide microarray based on the arrayed-primer extension (APEX) technique has been developed to simultaneously identify pathogenic fungi frequently isolated from invasive and superficial infections. Species-specific oligonucleotide probes complementary to the internal transcribed spacer 1 and 2 (ITS1 and ITS2) region were designed for 24 species belonging to 10 genera, including Candida species (Candida albicans, Candida dubliniensis, Candida famata, Candida glabrata, Candida tropi...

  7. Aorto-Bilateral-Femoral-Bilateral-Popliteal Bypass for Leriche Syndrome With Occlusion of Both Superficial Femoral Arteries

    OpenAIRE

    Mitrev, Zan; Veljanovska, Lidija; HRISTOV, Nikola

    2009-01-01

    A 68-year-old man, who is a smoker with hypertension and hyperlipidemia, presented in our hospital with rest pain in both calves. His symptoms started 1 year prior with short distance walking pain in both legs. Preoperative work up discovered Leriche's syndrome with occlusion of both superficial femoral arteries, as shown on the 64-slice computerized tomographic scan (Fig 1). Operative treatment included aorto-bilateral femoral bypass, using 16/8 mm Dacron (Edwards Lifesciences, Irvine, CA) Y...

  8. INFLUENCE OF SODIUM GLUTAMATE, BUBBLING N2- GAS AND SUPERFICIAL AERATION ON TETANUS TOXIN PRODUCTION IN Clostridium tetani CULTURES

    OpenAIRE

    Gutiérrez, I.; Garzón, E.; Vargas, P.; Moreno, N.; R. Poutou

    2005-01-01

    The influence of sodium glutamate as a supplement to Latham Mueller medium, while using bubbling nitrogen flow as an anaerobic agent and superficial aeration as an inducer of cell lysis and as a mechanism for the haulage of gases in the fermentation processes was evaluated. Using the Clostridium tetani Massachusetts’s strain, several five (5) liter batch fermentations were carried out for tetanus toxin production under the following conditions: Latham Mueller medium, with or without sodium gl...

  9. Automated analysis of damages for radiation in plastics surfaces; Analisis automatizado de danos por radiacion en superficies plasticas

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, C.; Camacho M, E.; Tavera, L.; Balcazar, M. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    1990-02-15

    Analysis of damages done by the radiation in a polymer characterized by optic properties of polished surfaces, of uniformity and chemical resistance that the acrylic; resistant until the 150 centigrade grades of temperature, and with an approximate weight of half of the glass. An objective of this work is the development of a method that analyze in automated form the superficial damages induced by radiation in plastic materials means an images analyst. (Author)

  10. A biphasic finite element study on the role of the articular cartilage superficial zone in confined compression

    OpenAIRE

    Guo, Hongqiang; Maher, Suzanne A; Torzilli, Peter A.

    2014-01-01

    The aim of this study was to investigate the role of the superficial zone on the mechanical behavior of articular cartilage. Confined compression of articular cartilage was modeled using a biphasic finite element analysis to calculate the one-dimensional deformation of the extracellular matrix (ECM) and movement of the interstitial fluid through the ECM and articular surface. The articular cartilage was modeled as an inhomogeneous, nonlinear hyperelastic biphasic material with depth and strai...

  11. MRI of superficial soft tissue masses: analysis of features useful in distinguishing between benign and malignant lesions

    International Nuclear Information System (INIS)

    To identify the MRI features of superficial soft tissue masses, that may allow differentiation between malignant and non-malignant lesions. A total of 136 consecutive patients referred to a supra-regional musculoskeletal oncology center over a 10-year period with the diagnosis of a superficial soft tissue mass were included in this retrospective study. Features analyzed included patient demographics, lesion size, MRI signal characteristics, margins, lobulation, hemorrhage, necrosis, fascial edema, relationship to the fascia, as well as involvement of the skin. Comparison was then made with the final histological diagnosis. Of the patients reviewed, 58 were male and 78 were female, and the mean age was 49.9 years. The mean age for malignant lesions was 57.9 years, and that for non-neoplastic and benign conditions 41.9 years (p < 0.001). A significant relationship was identified between malignancy and lobulation (p < 0.01), hemorrhage (p < 0.001), fascial edema (p < 0.001), hemorrhage (p < 0.0001) and necrosis (p < 0.001). The relationship between skin thickening and skin contact and malignancy was also found to be significant. However, size was not found to be an important determining factor for malignancy, with a significant proportion of malignant superficial sarcomas measuring less than 5 cm in maximal diameter. This study has shown that a significant proportion of malignant superficial sarcomas measured less than 5 cm in maximal diameter. Fascial edema, skin thickening, skin contact, hemorrhage, and necrosis were found to be highly significant factors indicative of malignancy. Lobulation and peritumoral edema were also significant MRI features. (orig.)

  12. Dynamic phantom with two stage-driven absorbers for mimicking hemoglobin changes in superficial and deep tissues.

    Science.gov (United States)

    Funane, Tsukasa; Atsumori, Hirokazu; Kiguchi, Masashi; Tanikawa, Yukari; Okada, Eiji

    2012-04-01

    In near-infrared spectroscopy (NIRS) for monitoring brain activity and cerebral functional connectivity, the effect of superficial tissue on NIRS signals needs to be considered. Although some methods for determining the effect of scalp and brain have been proposed, direct validation of the methods has been difficult because the actual absorption changes cannot be known. In response to this problem, we developed a dynamic phantom that mimics hemoglobin changes in superficial and deep tissues, thus allowing us to experimentally validate the methods. Two absorber layers are independently driven with two one-axis automatic stages. We can use the phantom to design any type of waveform (e.g., brain activity or systemic fluctuation) of absorption change, which can then be reproducibly measured. To determine the effectiveness of the phantom, we used it for a multiple source-detector distance measurement. We also investigated the performance of a subtraction method with a short-distance regressor. The most accurate lower-layer change was obtained when a shortest-distance channel was used. Furthermore, when an independent component analysis was applied to the same data, the extracted components were in good agreement with the actual signals. These results demonstrate that the proposed phantom can be used for evaluating methods of discriminating the effects of superficial tissue. PMID:22559692

  13. Superficial mycotic infections of the foot in a native pediatric population: a pathogenic role for Trichosporon cutaneum?

    Science.gov (United States)

    Archer-Dubon, Carla; Orozco-Topete, Rocío; Leyva-Santiago, Jaime; Arenas, Roberto; Carbajosa, Josefina; Ysunza, Alberto

    2003-01-01

    Superficial mycotic infections of the feet are usually caused by Tricophyton rubrum, predominantly affecting adults and resulting from the use of occlusive footwear. We carried out a mycologic study of superficial foot infections in a rural school in Mexico where most people wear a leather, nonocclusive sandal. Forty students had clinical signs of 50 fungal infections of the foot: 39 athlete's foot and 11 onychomycosis. Thirty-one boys and 9 girls were studied. Hyphae were seen in 11 cases of athlete's foot and 5 of onychomycosis. Twenty-one cultures were positive (42%). The most frequently isolated fungi were the opportunistic Trichosporon cutaneum in 42.8%, Candida sp. (23.8%), Trichophyton mentagrophytes (23.8%), and Candida glabrata (9.5%). Superficial mycotic infections of the feet and nails were most frequent in children and adolescents who usually wear nonocclusive shoes. The most frequent pathogens were Candida sp. and T. mentagrophytes. It is interesting to note the prevalence of T. cutaneum that has recently been implicated in mycoses of the feet and nails. We did not isolate T. rubrum in any patient. PMID:12869147

  14. Modifications in concrete superficial properties due to the use of different formworkrelease agents and plastic additives

    Directory of Open Access Journals (Sweden)

    Beltramone, A.

    2003-06-01

    Full Text Available The actual research study, carried out in the Laboratory of Construction Materials of the ETSAM., analyses the modifications in superficial properties (regarding colour and texture of grey Portland cement mortars due to the use of different formworks release agents (car oil, mineral oil and paraffin and to the addition of plastic superplasticiser to the mixture (Bettor and Sika trademarks. Once the test samples were obtained, a digital registration was made by giving them values in terms of colour and texture observed changes using computer programmes, referring those values to the test specimen (only cement, no additives. A migration of the polymeric particles of the additives towards the surface was observed, presenting the following modifications: Colour: darker hues than those of the test specimen sample were registered in the specimens with additives. Texture: the texture of the test specimen containing additives such as modified polycarboxilic ethers, polycarboxilic ethers; modified organic polymers and modified synthetic melamine were much smoother than the one in test specimen. Test specimens containing melamine, condensed naftalensulphate and polycarboxilic derivatives were a bit rougher but still smoother than the test specimen. The same variation of results as for the colour properties was obtained for the texture as regards to the use of formworks release agents, varying from smoothest to roughest with the car oil.

    El presente estudio experimental, realizado en las instalaciones del Laboratorio de Materiales de Construcción de la ETSAM, analiza las modificaciones de las propiedades superficiales observadas (en cuanto a color y textura en morteros de cemento portland gris, por la utilización de desencofrantes diversos (aceite de automóvil, aceite mineral y desencofrante parafínico, y la incorporación de aditivos superfluidificantes plásticos en la mezcla (de las marcas Bettor y Sika. Una vez obtenidas las diferentes

  15. Concentration levels of gamma radioactivity on superficial soils of municipalities of Guadalupe and Zacatecas

    International Nuclear Information System (INIS)

    A study on inside of municipalities of Guadalupe and Zacatecas in Zacatecas, Mexico was realized, with the purpose of determine the concentration levels of radionuclides 232Th, 238U, 40K and 137Cs, distributed on superficial soils. For this work was obtained a total of 44 samples of superficial soils nearby to 10 communities more populated of each one of municipalities; those that were prepared and placed on containers Marinelli type of 500 m L. The samples were measured in a gamma rays spectrometry system based on a germanium detector hyper pure, and was utilized the photo pick of 609 KeV of the 214Bi for to measure the activity of 226Ra, of 666 KeV for to measure the activity of 137Cs, of 911 KeV of the 228Ac for to measure the activity of 232Th, and of 1461 KeV for to measure the activity of 40K. The calculations to optimize the detector operation as much in efficiency as in energy were realized, and it was determined a time specifies for to obtain a relative error on the activity measurement smaller to 5%. Was found a minimum perceptible activity of 1.7 Bq·kg-1 for 226Ra, 0.96 Bq·kg-1 for 137Cs, 3.7 Bq·kg-1 for 232Th and of 6.8 Bq·kg-1 for 40K; these values were below those measured in the samples with the exception of 12 cases of the total for 137Cs. The average and concentration range in activity of soils of Guadalupe were of 22.3±1.5% (11-31.3) Bq·kg-1 for 226Ra, of 2.7±6% (0.95-5.5) Bq·kg-1 for 137Cs, of 28.2±2.5% (11-41.8) Bq·kg-1 for 232Th and of 540.5±0.6% (339.8-782.6) Bq·kg-1 for 40K. The average and concentration range in activity of soils of Zacatecas were of 24.8±1.4% (8.3-34.4) Bq·kg-1 for 226Ra, of 3.5±1.2% (1.1-7.7) Bq·kg-1 for 137Cs, of 35.1±2% (10.4-56.8) Bq·kg-1 for 232Th and of 625.2±0.5% (279.5-1278.3) Bq·kg-1 for 40K. These values are inside the world ranges reported by UNSCEAR and they do not represent a risk to population of municipalities in study; although the results can be used as reference from the exposure to

  16. Ácido linoléico conjugado e perfil de ácidos graxos no músculo e na capa de gordura de novilhos bubalinos alimentados com diferentes fontes de lipídios Linoleic conjugated acid and fatty acids profile in the muscle and fat layer of water buffalo steers fed different fat sources

    OpenAIRE

    M.M. Ladeira; M.A.A.F. Barbosa; D.M.P. Assunção; Matsushita, M.; G.T. Santos; Oliveira, R. L.

    2008-01-01

    Avaliaram-se o teor de ácido linoléico conjugado (CLA) e o perfil de ácidos graxos no músculo e na capa de gordura de novilhos bubalinos alimentados com diferentes fontes de lipídios. Utilizaram-se 12 animais castrados, da raça Murrah, com peso vivo de 306±8kg, submetidos aos tratamentos sem lipídeo adicional, grão de soja e óleo de soja, confinados durante 84 dias. Após o abate a carcaça foi resfriada a 5ºC, durante 24 horas. Foi feita secção entre a nona e a 11ª costelas da meia carc...

  17. Ácido linoléico conjugado e perfil de ácidos graxos no músculo e na capa de gordura de novilhos bubalinos alimentados com diferentes fontes de lipídios Linoleic conjugated acid and fatty acids profile in the muscle and fat layer of water buffalo steers fed different fat sources

    Directory of Open Access Journals (Sweden)

    R.L. Oliveira

    2008-02-01

    Full Text Available Avaliaram-se o teor de ácido linoléico conjugado (CLA e o perfil de ácidos graxos no músculo e na capa de gordura de novilhos bubalinos alimentados com diferentes fontes de lipídios. Utilizaram-se 12 animais castrados, da raça Murrah, com peso vivo de 306±8kg, submetidos aos tratamentos sem lipídeo adicional, grão de soja e óleo de soja, confinados durante 84 dias. Após o abate a carcaça foi resfriada a 5ºC, durante 24 horas. Foi feita secção entre a nona e a 11ª costelas da meia carcaça direita, de onde se separou músculo e capa de gordura, analisadas as concentrações de CLA e de ácidos graxos, por cromatografia gasosa. O fornecimento de óleo de soja resultou em maior concentração de CLA no músculo e na capa de gordura, e a adição de óleo de soja menores concentrações de ácidos graxos saturados, principalmente os ácidos mirístico e palmítico. Os animais que receberam a dieta com grão de soja integral também apresentaram menor teor de CLA e redução nas concentrações de mirístico e palmítico. Esses efeitos foram observados somente na capa de gordura e em menor intensidade.The effect of different fat sources on fatty acid concentrations in the muscle and in the fat layer of water buffalo steers was studied. Twelve water buffalo steers weighting 306±8kg, fed without additional fat, soybean grain or soybean oil and confined during 84 days were used. The animals were slaughtered after 16-hours-fasting and the carcass was cooled at 5ºC, for 24 hours. A section was extracted between 9th and 11th ribs from the right half carcass and this section was separated in bone, muscle and fat layer. In the last two fractions, the fatty acids, including conjugated linoleic acid (CLA, were quantified by gaseous chromatography. The soybean oil provided higher CLA concentrations in the steers muscle and fat layer. Moreover, the soybean oil inclusion promoted lower saturated fatty acids contents, mainly miristic and palmitic

  18. Estudio de "las capas del cabo ladrillero superior" en el cabo homónimo, mioceno inferior de la cuenca austral, tierra del fuego Study of "The Upper Cabo Ladrillero Beds" in the homonym locality, Lower Miocene of the Austral Basin, Tierra del Fuego

    Directory of Open Access Journals (Sweden)

    Estefanía P Tudisca

    2012-03-01

    Full Text Available En los acantilados del cabo Ladrillero, situado sobre la costa atlántica de la Isla Grande de Tierra del Fuego, afloran parte de los depósitos cuspidales que rellenan la cuenca de antepaís Austral o de Magallanes. Estos depósitos del Mioceno inferior son conocidos como "capas del Cabo Ladrillero" y "capas del Cabo San Pablo", siendo las "capas del Cabo Ladrillero superior" las analizadas en este trabajo. La zona de estudio, situada a una decena de kilómetros al norte del frente orogénico emergente (Punta Gruesa, permitió reconocer cuatro asociaciones de facies que registran depósitos gravitacionales resedimentados en un ambiente marino supra batial y una cuña deltaica progradante y somerizante hacia el noreste. Entre los rasgos más conspicuos observados en esta sucesión se destacan bancos deformados, intervalos macizos y abundantes diques clásticos, cuyo análisis estadístico indica un patrón transtensivo. Los microfósiles documentados en el área y utilizados previamente como herramienta para sostener un ambiente marino profundo provienen de niveles estratigráficos infrayacentes y corresponden a niveles de la Formación Desdémona y las capas del Cabo Ladrillero inferior, aflorantes hacia el sur de la zona de estudio. Las evidencias sedimentológicas no son concluyentes respecto de la batimetría, pero la ausencia de turbiditas clásicas, flujos hiperpícnicos, la abundancia de bancos deformados y resedimentados, restos vegetales y fragmentos de carbón son compatibles con un ambiente somero y deltaico con altas tasas de aporte y pendientes inestables antes que un ambiente marino profundo, y sugieren una historia compleja de la evolución del relleno sedimentario que no se explica meramente con los esquemas basados exclusivamente en el contenido de foraminíferos que domina en la literatura.In the cliffs of the Ladrillero cape, situated on the Atlantic coast of the Isla Grande de Tierra del Fuego, the uppermost records of the

  19. Distribution of organochlorine compounds in superficial sediments from the Gulf of Lion, northwestern Mediterranean Sea

    Science.gov (United States)

    Salvadó, Joan A.; Grimalt, Joan O.; López, Jordi F.; Durrieu de Madron, Xavier; Pasqual, Catalina; Canals, Miquel

    2013-11-01

    Superficial sediments from Cap de Creus to the Rhone Delta, in the Gulf of Lion, Northwestern Mediterranean Sea, including the mid-shelf mud belt and the continental slope were collected between 2005 and 2008 to assess the levels, main sources and distribution patterns of organochlorine pollutants. Discharges from the Rhone River are the main source for all these compounds around the area. The spatial distribution of organochlorine pollutants was also related to their physicochemical properties and to sediment grain size and composition. The concentrations of polychlorobiphenyls (PCBs), dichlorodiphenyltrichloroethane (DDT) and its metabolites (DDD and DDE), and the chlorobenzenes (CBzs) - pentachlorobenzene (PeCB) and hexachlorobenzene (HCB) - decreased westwards along the mid-shelf mud belt. In contrast, hexachlorocyclohexane isomers (HCHs), namely lindane (γ-HCH), followed another concentration pattern suggesting a different transport mode. The major concentrations of organochlorine compounds were observed off the Rhone River mouth, in the prodelta, where PCB, DDT and CBz concentrations reached 38, 29 and 8.3 ng g-1, respectively. These average concentrations in the mid continental shelf were two to ten times lower than those found in a study performed about 20 years ago, albeit in almost all the sites the values of PCBs and DDTs still exceed the NOAA’s Sediment Quality Guidelines. In contrast, the concentrations in the continental slope were nearly the same as 20 years ago, which may evidence that even most of these compounds were banned decades ago, their background concentrations associated to diffuse pollution have not decreased in the deep continental margin.

  20. Superficial layer MHD effect and full-cover free surface flow characterization

    International Nuclear Information System (INIS)

    Up to now, no realistic liquid metal (LM) free surface flow has been successfully used in magnetic confinement fusion devices because of MHD instability and unavoidable rivulet flow of the free surface. Recently, after performing a guidable free curve-surface flow investigation theoretically and experimentally, seeking for other way to get a full-cover free surface flow is in implementing. The superficial layer MHD effect, rivulet flow enhancement effect by magnetic field and thin film flow rivulet effect are experimentally observed. Compared with the experimental results and the characteristic parameters of the free surface flow, new variables of surface cover ratio and rivulet flow index are introduced to characterize the flowing characteristic of the full-cover free surface flow under magnetic field. According to the analysis rule, there are different unique conditions to meet full-cover free surface flow for different liquid metal under a magnetic field. Meanwhile, one inherent full-cover free surface flow is addressed for alternative application to liquid metal plasma facing component system. The experiments were carried out at Liquid Metal Experimental Loop Upgrade (LMEL-U) facility in Southwestern Institute of Physics, China. The free surface flow was measured 58 mm in width and 900 mm in length. The flowing angle is 60 degree to gravity direction in order to differentiate the effect of MHD from gravity for the flow under a gradient magnetic field. The average velocity of the free surface flow is from 0.4 to 4.34 m/s. The magnetic field is from 0 to 1.851 Tesla. To seek for the best free surface flow, the thickness of free surface flow was designed from 1 mm to several millimeter. Due to a limitation by the current liquid metal fluid diagnosis technology, the free surface flow is recorded by normal and super high speed camera. (author)

  1. Capillary microscopic observations on the superficial minute vessels of atomic bomb survivors, Hiroshima 1972-73

    International Nuclear Information System (INIS)

    Microscopic and photographic studies were conducted in 1972-73 at ABCC in Hiroshima on the morphology of superficial blood vessels of A-bomb survivors to determine whether the somatic effects of radiation still existed 30 years after the A-bomb. Control curves representing the relationship between age and score values assigned to morphological changes of the minute blood vessels of the fingernail fold, labial mucosa, and lingual mucosa, which could be regarded as an index of aging, were obtained. These were compared with similar curves obtained from A-bomb survivors with the aim of evaluating the effect of radiation on the aging process of these vessels. The late somatic effects of irradiation which were demonstrated 10 years after the A-bomb in a previous study (1956-57) were found to persist in the current study (1972-73) conducted 30 years after the A-bomb though not as pronounced as in the earlier study. A significant effect was observed only in the fingernail fold of those exposed to 100 rad or more under the age of 10 at the time of the bomb. A statistically significant difference was not observed for labial mucosa and lingual mucosa because the number of cases available for scoring was small, but a trend was observed for abnormalities of these two sites to be higher in frequency in the 100+ rad group under the age of 10 ATB than that of the control group. No significant difference was observed between the control and exposed with regard to radiation effect on the aging process using the relationship of score values to age as an index of aging. This is in accord with results of studies of A-bomb survivors which suggested that radiation induces life shortening attributable primarily to cancers, but not a general acceleration of the aging phenomenon. (author)

  2. Impacto do desmatamento de uma área de mangue no albedo superficial

    Directory of Open Access Journals (Sweden)

    Carlos Alexandre Santos Querino

    2013-12-01

    Full Text Available Manguezais são ecossistemas peculiares encontrados nas regiões tropicais. A degradação dos manguezais altera o balanço superficial de radiação, e por consequência o albedo. Para avaliar e comparar o albedo, nesse ambiente foram instaladas duas plataformas de coletas de dados micrometeorológicos no município de Marechal Deodoro, Alagoas, Brasil, no período de outubro de 2004 a outubro de 2005. No mangue nativo (9º42' 18"S; 35º 48' 32" W foram instalados dois piranômetros acima da copa das árvores, e em outubro de 2005, um terceiro dentro do mangue. Na área degradada (9º 36' 38" S; 35º 46' 03" W, os sensores foram posicionados a uma altura de dois metros em relação ao solo. Observou-se que o albedo sobre a floresta de mangue, em geral, é maior em média, 5 pontos percentuais superior em relação à outras florestas tropicais, como por exemplo, a Amazônia. Internamente notou-se que o mesmo não ultrapassou os 13% e seu valor máximo ocorre no horário de menor albedo da copa ≈ 20%, evidenciando a influência da maré. Já na área degradada, o albedo médio foi de 35%, o que implica em uma elevação aproximada de 49% quando substituída a cobertura de floresta natural.

  3. Qualidade da água superficial por meio de análise do componente principal

    Directory of Open Access Journals (Sweden)

    Nícolas Reinaldo Finkler

    2015-11-01

    Full Text Available Os fatores naturais e, em especial os antrópicos, que contribuem para a variação espacial e temporal da qualidade da água superficial nas bacias hidrográficas do município de Caxias do Sul foram determinados com uso de técnicas multivariadas de análise de dados. Foi utilizada a técnica de Análise do Componente Principal (ACP como base para o estudo. O monitoramento foi realizado em 30 pontos de monitoramento no período compreendido entre setembro de 2012 a janeiro de 2014. A amostragem foi realizada bimestralmente, abrangendo seis bacias hidrográficas, onde foram analisados 21 parâmetros físicos, químicos e biológicos. Os resultados obtidos demonstraram que com o emprego da ACP, foi possível explicar uma variância total de 71,3% para os dados de qualidade de água. Ainda, constatou-se que os principais fatores que contribuem para a variação da qualidade da água nas bacias hidrográficas da região são a poluição doméstica e industrial, sobretudo do setor galvonotécnico. Foi verificada por fim, uma tendência à atenuação dos poluentes nos corpos hídricos à jusante das áreas urbanas e de grande influência antrópica, especialmente na medida em que há menor pressão das áreas urbanizadas sobre as bacias que drenam a região.

  4. Cellular heterogeneity in superficial and deep subcutaneous adipose tissues in overweight patients.

    Science.gov (United States)

    Boulet, Nathalie; Estève, David; Bouloumié, Anne; Galitzky, Jean

    2013-09-01

    Human abdominal adipose tissue (AAT) can be divided into two compartments according to anatomical location to dermis layer, i.e. superficial and deep compartments (sAAT and dAAT). In morbidly obese patients, dAAT mass has been linked to obesity-associated pathologies. In the present study, we characterized in overweight healthy individuals human sAAT and dAAT cellular composition and adipogenic potential. Twelve paired sAAT and dAAT samples were collected. sAAT compared to dAAT adipocytes are larger. In agreement with increased size, real-time PCR analyses performed on isolated adipocytes showed that sAAT adipocytes exhibited higher leptin transcript levels but also higher expression of genes involved in metabolism including hormone-sensitive lipase compared to dAAT adipocytes. Flow cytometry analyses performed on stroma-vascular fraction (SVF) showed no difference in the numbers of progenitor cells, endothelial cells and macrophages between sAAT and dAAT. Macrophage phenotypes were not distinct between both AAT compartments. However, CD3+ T lymphocyte number was higher in dAAT than in sAAT. Adipogenic potential of dAAT SVF was lower than sAAT SVF whereas the one of isolated progenitor cells was not distinct whatever the AAT compartments. Therefore, in overweight patients, both sAAT and dAAT compartments exhibit differences in terms of adipocytes and T lymphocyte accumulation. dAAT is characterized by higher T lymphocyte accumulation together with smaller less metabolically active adipocytes. The lower adipogenic potential of dAAT SVF is not due to intrinsic progenitor cell properties but more likely to the increased T lymphocyte accumulation. PMID:23184733

  5. A new noninvasive device for continuous arterial blood pressure monitoring in the superficial temporal artery

    International Nuclear Information System (INIS)

    Continuous recording of arterial blood pressure (ABP) has many applications in cardiovascular physiology, but existing alternatives rely on measurements performed in the fingers or radial artery. Peripheral recordings have significant differences from central ABP regarding the pattern of the waveform and corresponding systolic and diastolic values. To address the need for noninvasive measurements closer to the ascending aorta, a new device was constructed to measure ABP in the superficial temporal artery (STA) using photoplethysmography and the arterial volume clamping technique. The optoelectronic circuitry to generate the photoplethysmogram is contained in a specially designed probe placed over the STA and kept in place with a head frame. The prototype (STAbp) also includes original designs for the pneumatic, electronic, signal processing, control and display sub-systems. A self-calibration feature regularly updates the photoplethysmogram operating point to improve accuracy. The performance of the STAbp was compared against the Finapres in 19 healthy subjects. At rest, the bias (SDd) was −23.1 (15.05), −10.8 (13.83) and −12.4 (12.93) mmHg for systolic, mean and diastolic pressures respectively, without significant differences in drift between the two devices. The 99% bandwidth (SD) for the spectral distribution of ABP waveforms was 5.3 (1.46) Hz for STAbp and 6.8 (0.73) Hz for the Finapres (p < 0.01). Handgrip manoeuvre showed a very similar response to the Finapres, including the rapid return to baseline on release. The new STAbp device has considerable potential as a new tool for clinical and research applications where continuous recording of more central ABP is advantageous compared to peripheral alternatives. (paper)

  6. Deep subcutaneous adipose tissue is more saturated than superficial subcutaneous adipose tissue.

    Science.gov (United States)

    Lundbom, J; Hakkarainen, A; Lundbom, N; Taskinen, M-R

    2013-04-01

    Upper body abdominal subcutaneous adipose tissue (SAT) can be divided into deep SAT (DSAT) and superficial SAT (SSAT) depots. Studies on adipose tissue fatty acid (FA) composition have made no distinction between these two depots. The aim of this study is to determine whether DSAT and SSAT differ in FA composition. We studied the FA composition of DSAT and SSAT in 17 male and 13 female volunteers using non-invasive proton magnetic resonance spectroscopy in vivo. Magnetic resonance imaging was used to differentiate between DSAT and SSAT. Adipose tissue spectra were analysed for lipid unsaturation, or double bond (DB) content, and polyunsaturation (PU), according to previously validated methods. The DSAT depot was more saturated than the SSAT depot, in both men (0.833 ± 0.012 vs 0.846 ± 0.009 DB, P<0.002) and women (0.826 ± 0.018 vs 0.850 ± 0.018 DB, P<0.002). In contrast, PU did not differ between DSAT and SSAT in either men (0.449 ± 0.043 vs 0.461 ± 0.044 PU, P=0.125) or women (0.411 ± 0.070 vs 0.442 ± 0.062 PU, P=0.234) and displayed a close correlation between the depots (R=0.908, P<0.001, n=30). The higher saturation in DSAT compared with SSAT can be attributed to a higher ratio of saturated to monounsaturated FAs. These results should be taken into account when determining the FA composition of SAT. PMID:22641063

  7. Effects of angiotensin II on visual neurons in the superficial laminae of the hamster's superior colliculus.

    Science.gov (United States)

    Mooney, R D; Zhang, Y; Rhoades, R W

    1994-01-01

    Superficial layer superior colliculus (SC) neurons were recorded extracellularly with multibarreled recording/ejecting micropipettes. Angiotensin II was delivered via micropressure ejection during visual stimulation (n = 215 cells), or during electrical stimulation of either the optic chiasm (OX; n = 150 cells) or visual cortex (CTX; n = 42 cells). Application of angiotensin II decreased visual responses of SC cells to 43.8% +/- 30.7% (mean +/- S.D.) and reduced responses to electrical stimulation of the OX and CTX to 58.6% +/- 34.1% and 43.8% +/- 30.7% of control values, respectively. Angiotensin II enhanced responses by at least 30% in only 6 cells (1.5%). Of the 35 neurons tested with both OX and CTX stimulation, the correlation of evoked response suppression by angiotensin II was highly significant (r = 0.69; P iontophoresis of glutamate and then tested with angiotensin II. Angiotensin II reduced the glutamate-evoked responses to an average 29.1% +/- 21.1% of control values (n = 9 cells). This suggest that the site of action of angiotensin II is most likely postsynaptic. To identify which receptors were involved in these effects, angiotensin II was ejected concurrently with the AT1 antagonist Losartan (DUP753) or with either of two AT2 antagonists, CGP42112A or PD123177. Losartan antagonized the action of angiotensin II in 65.6% of the cells tested (n = 99) and CGP42112A and PD123177 had antagonistic effects in 58% (n = 65) and 60% (n = 5), respectively. Both classes of antagonists were tested in 29 cells; and there was no significant correlation between their effectiveness. These results suggest that both AT1 and AT2 receptors may independently mediate the suppressive effects of angiotensin II, and that collicular neurons may have either or both receptor subtypes. PMID:7841124

  8. Molecular features distinguish ten neuronal types in the mouse superficial superior colliculus.

    Science.gov (United States)

    Byun, Haewon; Kwon, Soohyun; Ahn, Hee-Jeong; Liu, Hong; Forrest, Douglas; Demb, Jonathan B; Kim, In-Jung

    2016-08-01

    The superior colliculus (SC) is a midbrain center involved in controlling head and eye movements in response to inputs from multiple sensory modalities. Visual inputs arise from both the retina and visual cortex and converge onto the superficial layer of the SC (sSC). Neurons in the sSC send information to deeper layers of the SC and to thalamic nuclei that modulate visually guided behaviors. Presently, our understanding of sSC neurons is impeded by a lack of molecular markers that define specific cell types. To better understand the identity and organization of sSC neurons, we took a systematic approach to investigate gene expression within four molecular families: transcription factors, cell adhesion molecules, neuropeptides, and calcium binding proteins. Our analysis revealed 12 molecules with distinct expression patterns in mouse sSC: cadherin 7, contactin 3, netrin G2, cadherin 6, protocadherin 20, retinoid-related orphan receptor β, brain-specific homeobox/POU domain protein 3b, Ets variant gene 1, substance P, somatostatin, vasoactive intestinal polypeptide, and parvalbumin. Double labeling experiments, by either in situ hybridization or immunostaining, demonstrated that the 12 molecular markers collectively define 10 different sSC neuronal types. The characteristic positions of these cell types divide the sSC into four distinct layers. The 12 markers identified here will serve as valuable tools to examine molecular mechanisms that regulate development of sSC neuronal types. These markers could also be used to examine the connections between specific cell types that form retinocollicular, corticocollicular, or colliculothalamic pathways. J. Comp. Neurol. 524:2300-2321, 2016. © 2016 Wiley Periodicals, Inc. PMID:26713509

  9. Capillary microscopic observation on the superficial minute vessels of atomic bomb survivors, Hiroshima, 1972--1973

    International Nuclear Information System (INIS)

    Microscopic and photographic studies were conducted in 1972 to 1973 at the Atomic Bomb Casualty Commission (ABCC) in Hiroshima on the morphology of superficial blood vessels of A-bomb survivors to determine whether the somatic effects of radiation still existed 30 yr after the A-bomb. Control curves representing the relationship between age and score values assigned to morphological changes of the minute blood vessels of the fingernail fold, labial mucosa, and lingual mucosa, which could be regarded as an index of aging, were obtained. These were compared with similar curves obtained from A-bomb survivors with the aim of evaluating the effect of radiation on the aging process of these vessels. The late somatic effects of irradiation which were demonstrated 10 yr after the A-bomb in a previous study (1956 to 1957) were found to persist in the current study (1972 to 1973) conducted 30 yr after the A-bomb, though not as pronounced as in the earlier study. A significant effect was observed only in the nail fold of those exposed to 100 rad or more under the age of 10 at the time of bomb (ATB). A statistically significant difference was not observed with labial and lingual mucosae because the number of cases available for score evaluation was small, but a trend was observed for abnormalities of these two sites to be higher in frequency in the group exposed to 100 rad or more under the age of 10 ATB than that of the control group. No significant difference was observed between the control and exposed with regard to radiation effect on the aging process using the relationship of score values to age as an index of aging

  10. Capillary microscopic observation on the superficial minute vessels of atomic bomb survivors, Hiroshima, 1972--1973

    Energy Technology Data Exchange (ETDEWEB)

    Tsuya, A.; Wakano, Y.; Otake, M.; Dock, D.S.

    1977-11-01

    Microscopic and photographic studies were conducted in 1972 to 1973 at the Atomic Bomb Casualty Commission (ABCC) in Hiroshima on the morphology of superficial blood vessels of A-bomb survivors to determine whether the somatic effects of radiation still existed 30 yr after the A-bomb. Control curves representing the relationship between age and score values assigned to morphological changes of the minute blood vessels of the fingernail fold, labial mucosa, and lingual mucosa, which could be regarded as an index of aging, were obtained. These were compared with similar curves obtained from A-bomb survivors with the aim of evaluating the effect of radiation on the aging process of these vessels. The late somatic effects of irradiation which were demonstrated 10 yr after the A-bomb in a previous study (1956 to 1957) were found to persist in the current study (1972 to 1973) conducted 30 yr after the A-bomb, though not as pronounced as in the earlier study. A significant effect was observed only in the nail fold of those exposed to 100 rad or more under the age of 10 at the time of bomb (ATB). A statistically significant difference was not observed with labial and lingual mucosae because the number of cases available for score evaluation was small, but a trend was observed for abnormalities of these two sites to be higher in frequency in the group exposed to 100 rad or more under the age of 10 ATB than that of the control group. No significant difference was observed between the control and exposed with regard to radiation effect on the aging process using the relationship of score values to age as an index of aging.

  11. Risk Factors and Clinical Evaluation of Superficial Femoral Artery Stent Fracture: Prote'ge'GPS Stent

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Da Un; Kim, Jae Kyu; Jung, Hye Doo; Huh, Tae Wook; Yim, Nam Yeol; Oh, Hyun jun; Choi, Soo Jin Na [Chonnam National University Hospital, Chonnam National University, Medical School, Gwangju (Korea, Republic of); Chang, Nam Kyu [Chonnam National University Hwasun Hospital, Chonnam National University, Medical School, Hwasun (Korea, Republic of)

    2010-12-15

    To evaluate the occurrence of superficial femoral artery stent fractures, the risk factors of stent fracture, and the relationship between fractures and clinical findings. Of the 38 patients who underwent treatment with Prote'ge'GPS stenting due to arterial occlusions on the superficial femoral artery, 17 also underwent a clinical analysis. Forty-three stents were inserted in the 17 superficial femoral arteries, ranging between 15 and 50 cm in length, with a mean treated length of 26.4 cm (15-50 cm). A fracture was evaluated by taking a PA and lateral simple radiography, as well as a follow-up evaluation accompanied with a CT angiography, DSA, and a color Doppler sonography. The examination involved the assessment of the difference between bone fractures due to length, placement, and frequency. Fractures occurred in 13 of 43 stents (30.2%). A total of 10 (71.4%) occurred in the upper third, compared to 4 (28.6%) in the lower third of the superficial femoral artery. In addition, 10 stents (71.4%) had a single strut fracture, whereas 4 (28.6%) had multiple strut fractures. A stent fracture occurred more frequently when the stents and lesions were longer (p=0.021, 0.012) and the stents were inserted near the joint. However, there was no significant relationship between stent numbers and the fractures (p=0.126). When the stents were inserted along the popliteal artery, a stent fracture occurred more frequently in the lower third of the artery. The stent fractures did not significantly influence the patency rate of the stented artery (p=0.44) Prote'ge'GPS stents in the superficial femoral artery revealed a considerable number of fractures and the fracture frequency showed a significant relationship with the length of stents and lesions. The closer stent insertion was to the joints, the more frequently fractures occurred. There were no evident significant relationships between the presence of stent fractures and the patency of the stented arteries

  12. Dejeto líquido bovino em plantio direto: perda de carbono e nitrogênio por escoamento superficial

    Directory of Open Access Journals (Sweden)

    Fabiana de Medeiros Silveira

    2011-10-01

    Full Text Available A utilização de dejetos de animais na produção agrícola é uma alternativa de disposição do resíduo gerado na atividade pecuária, porém se aplicado inadequadamente pode causar problemas ambientais. Nesse sentido, o objetivo geral deste trabalho foi avaliar as concentrações e perdas de C e N por escoamento superficial em quatro doses de dejeto líquido bovino (0, 60, 120, 180 m³ ha-1 ano-1 aplicado em Latossolo franco-argiloarenoso com 13 % de declividade, manejado em plantio direto com soja, aveia-preta, milho e trigo, em sistema de rotação. O escoamento superficial foi coletado durante dois anos e sete meses em galões de 60 L após cada chuva, com geração de escoamento em pelo menos uma parcela. Os nutrientes solúveis foram determinados em amostra filtrada por uma membrana de éster de 0,45 µm e os nutrientes totais, em amostras não filtradas. A aplicação de dejeto líquido bovino reduziu as perdas de C orgânico e N por escoamento superficial, com consequências positivas para a qualidade da água em corpos hídricos a jusante. Porém, doses crescentes de dejeto tendem a aumentar a concentração dos referidos elementos e, por conseguinte, diminuir a qualidade da água. As concentrações médias ponderadas de nitrato estiveram abaixo do limite permitido pela legislação brasileira, porém as de amônio ficaram acima do máximo permitido, indicando a necessidade de práticas de controle e retenção do escoamento superficial, a fim de evitar a entrada do nitrato nos corpos d'água, mesmo em áreas sob plantio direto. Cabe ressaltar que esses dados foram obtidos em condição de baixo potencial poluidor, ou seja, relevo com 13 % de declividade, baixa precipitação e intervalo mínimo de dez dias entre a aplicação do dejeto e a ocorrência de chuva, com formação de escoamento superficial. Além disso, há a necessidade de estudos futuros para avaliar a lixiviação de nitrato.

  13. Associacao entre o indice de respiracao rapida e superficial e o sucesso da extubacao em pacientes com traumatismo cranioencefalico

    Directory of Open Access Journals (Sweden)

    Helena Franca Correia dos Reis

    2013-09-01

    Full Text Available OBJETIVO: Verificar a associação entre o índice de respiração rápida e superficial e o sucesso da extubação em pacientes com traumatismo cranioencefálico. MÉTODOS: Estudo prospectivo, formado por pacientes com traumatismo cranioencefálico, de ambos os gêneros, ventilados mecanicamente por pelo menos 2 dias, que obtiveram sucesso no teste de respiração espontânea. Foram mensurados, por meio da ventilometria, o volume-minuto e a frequência respiratória, sendo calculado o índice de respiração rápida e superficial (frequência respiratória/volume corrente. A variável dependente foi o resultado da extubação: reintubação em 48 horas (falha da extubação ou não (sucesso da extubação. A variável independente foi o índice de respiração rápida e superficial mensurado após o sucesso no teste de respiração espontânea. RESULTADOS: A amostra foi constituída por 119 pacientes, sendo 111 (93,3% do gênero masculino. A média da idade foi de 35,0±12,9 anos. O tempo médio de ventilação mecânica foi de 8,1±3,6 dias. Cento e quatro (87,4% pacientes obtiveram sucesso na extubação. Não foi observada associação entre o índice de respiração rápida e superficial e o sucesso da extubação. CONCLUSÃO: O índice de respiração rápida e superficial não esteve associado ao sucesso da extubação em pacientes com traumatismo cranioencefálico.

  14. Fracciones de carbono orgánico en la capa arable: efecto de los sistemas de cultivo y fertilización nitrogenada Organic carbon fractions in the arable layer: cropping systems and nitrogen fertilization effects

    Directory of Open Access Journals (Sweden)

    Maximiliano J Eiza

    2005-07-01

    Full Text Available Nuestro objetivo fue evaluar el efecto de siete sistemas de cultivo (SC en un experimento de larga duración: pastura permanente (PP, agricultura permanente bajo siembra directa (SD (SD100 y labranza convencional (LC (LC100, rotación agricultura pastura (50%-50% del tiempo bajo SD (SD50 y LC (LC50, rotación agricultura pastura (75%-25% del tiempo bajo SD (SD75 y LC (LC75 y dos dosis de fertilización nitrogenada: 0 y 120 kg N ha-1, sobre el carbono orgánico total (COT y particulado (COP, para 0-20 cm en 1994 y para 0-5, 5-20 y 0-20 cm de profundidad en 2003. En 1994, los mayores COP y COT se asociaron a manejos con períodos agrícolas previos cortos. En 2003, se encontraron diferencias entre SC en COT en la capa de 0-5 cm de profundidad, siendo PP, LC50 y SD50 los tratamientos con mayor COT. El COP fue más alto bajo PP, LC50 y SD50 a 0-5 y 0-20 cm de profundidad. A 0-5 cm COP bajo SD fue significativamente mayor que bajo LC. A 5-20 cm de profundidad, las diferencias en COP no fueron claras entre SC aunque, tendió a disminuir con los años bajo agricultura. La fertilización determinó mayor COP a 5-20 y 0-20 cm de profundidad. Las diferencias en la variación entre 1994 y 2003 entre SC fueron significativas para COP y COT. Por otro lado, la variación relativa de COP fue más alta que la de las otras variables. Se concluye que las rotaciones cortas de agricultura-pastura, la SD y la fertilización nitrogenada mejoran el COP y el COT. Para las condiciones de este experimento, COP ha sido un indicador más sensible que COT y sería capaz de detectar los efectos de las prácticas de manejo.In the southeastern Buenos Aires Province (Argentina unsuitable combination of crop rotation and tillage systems (cropping systems, SC has reduced soil organic matter content. Our aim was to evaluate the effect of seven SC in a long term experiment (since 1976 started in 1994: permanent pasture (PP, permanent cropping under no tillage (SD (SD100 and

  15. Helicobacter pylori infection, glandular atrophy and intestinal metaplasia in superficial gastritis, gastric erosion, erosive gastritis, gastric ulcer and early gastric cancer

    OpenAIRE

    Zhang, Chuan; Yamada, Nobutaka; Wu, Yun-Lin; Wen, Min; Matsuhisa, Takeshi; Matsukura, Norio

    2005-01-01

    AIM: To evaluate the histological features of gastric mucosa, including Helicobacter pylori infection in patients with early gastric cancer and endoscopically found superficial gastritis, gastric erosion, erosive gastritis, gastric ulcer.

  16. FORECASTING OF DURABILITY OF THE LAYER OF SUPERFICIAL PROCESSING OF ROAD COVERINGS ON THE BASIS OF THE MODIFIED BITUMENS WITH APPLICATION OF NEURAL NETWORKS

    Directory of Open Access Journals (Sweden)

    E. B. Tyukov

    2009-01-01

    Full Text Available The opportunity of application of system of neural networks for forecasting durability of a layer of superficial processing of road coverings is considered. The offered technique of definition of efficiency of application of any additive in-tended for improvement of properties of bitumens at the device of layers of su-perficial processing of road coverings allows to receive the most authentic fore-cast of safety of a layer.

  17. Medida de densidades con el picnómetro y de tensión superficial con el estalagmómetro

    OpenAIRE

    Espinosa Tomás, Julián; Pérez Rodríguez, Jorge; Miret Marí, Juan José; Caballero Caballero, María Teresa

    2010-01-01

    Guión de la práctica de Física de primero de grado de Óptica y Optometría "MEDIDA DE DENSIDADES CON EL PICNÓMETRO Y DE TENSIÓN SUPERFICIAL CON EL ESTALAGMÓMETRO" Objetivos: Medir densidades de sólidos y líquidos. Medir la tensión superficial de un líquido problema con el estalagmómetro.

  18. Creation of a neo-aortoiliac system from lower extremity deep and superficial veins.

    Science.gov (United States)

    Clagett, G P; Bowers, B L; Lopez-Viego, M A; Rossi, M B; Valentine, R J; Myers, S I; Chervu, A

    1993-01-01

    OBJECTIVE: This study evaluated the morbidity, mortality, and intermediate term follow-up of patients undergoing replacement of their aortoiliac-femoral systems with lower extremity deep and superficial veins. SUMMARY BACKGROUND DATA: The most commonly used treatment for aortic prosthetic infection is ectopic bypass and removal of the prosthesis. The overall mortality rate with this approach is approximately 20%, with an amputation rate of 10% to 14%. Other limitations include thrombosis of the ectopic bypass leading to limb loss, reinfection of the ectopic bypass, and aortic stump blowout. Dissatisfaction with this approach has led the authors to develop the following. METHODS: A neo-aortoiliac system (NAIS) was fashioned from lower extremity deep veins (DV), greater saphenous veins (GSV), or both in patients with infected aortobifemoral prosthesis (n = 17) and other complex aortic problems (n = 3). Removal of infected prosthetic material, harvest of vein, and creation of NAIS was performed as a single-staged procedure. RESULTS: The in-hospital mortality and amputation rates were 10% each. The mean (+/- standard deviation [SD]) operative time was 6.5 +/- 1.8 hours and the blood transfusion requirement was 4 +/- 3 units. Four patients experienced postoperative gastrointestinal complications with peritonitis and sepsis; NAIS vein graft resisted infection and remained intact. The mean follow-up time was 22.5 +/- 16 months. NAISs constructed from GSVs were prone to the development of focal stenoses requiring intervention or diffuse neointimal hyperplasia leading to occlusion. In contrast, all NAISs from larger caliber DVs have remained widely patent. The failure rate of GSV NAISs was 64%, compared to 0% for DV NAISs (p = 0.006). Despite the high failure rate in patients with GSV NAISs, none has required amputation. In patients who had DVs harvested for NAIS reconstruction, limb edema and other signs of venous hypertension have been minimal. CONCLUSION: NAIS

  19. Micoses superficiais e os elementos da resposta imune Superficial mycosis and the immune response elements

    Directory of Open Access Journals (Sweden)

    Paulo Ricardo Criado

    2011-08-01

    Full Text Available As micoses superficiais são prevalentes em todo o mundo, geralmente ocasionadas por dermatófitos e restritas à camada córnea. A resposta imunológica do hospedeiro às infecções dos fungos dermatófitos depende basicamente das defesas do hospedeiro a metabólitos do fungo, da virulência da cepa ou da espécie infectante e da localização anatômica da infecção. Serão revistos alguns dos fatores da defesa imunológica do hospedeiro que influenciam na eficácia da resposta imune. Em especial, a participação dos receptores de padrão de reconhecimento (PRRs, tais como os receptores toll-like ou os da família lectina (DC-SIGN e dectin-2, que participam da resposta imune inata, conferindo-lhe especificidade e definindo o padrão da resposta imune como um todo. O predomínio celular ou humoral da resposta imune definirá o quadro clínico e o prognóstico da infecção, levando à cura ou cronicidadeSuperficial mycoses are prevalent worldwide. They are often caused by dermatophytes and restricted to the stratum corneum. The host's immune response against infections caused by dermatophytes basically depends on the host's defense against metabolites of the fungi, virulence of the infecting strain or species and anatomical site of the infection. We will review some of the factors of the host's immune defense that influence the efficacy of the immune response. We will particularly review the role of pattern recognition receptors (PRRs, such as toll-like receptors or lectin receptors (DCSIGN and Dectin 2, which participate in the innate immune response, bringing specificity to the immune response and setting its pattern. The predominance of a cellular or humoral immune response determines the clinical manifestations and the prognosis of the infection, leading to healing or chronicity

  20. Ultra high efficiency/low pressure supercritical fluid chromatography with superficially porous particles for triglyceride separation.

    Science.gov (United States)

    Lesellier, E; Latos, A; de Oliveira, A Lopes

    2014-01-31

    This paper reports the development of the separation of vegetable oil triglycerides (TG) in supercritical chromatography (SFC), using superficially porous particles (SPPs). The SPP, having a small diameter (2-3μm), provide a higher theoretical plate number (N), which allows to improve separation of critical pairs of compounds. However, compared to fully porous particles of larger diameter (5μm), the pressure drop is also increased. Fortunately, supercritical fluids have a low viscosity, which allows coupling several columns to achieve high N values, while maintaining flow rate above 1ml/min, ensuring a ultra high efficiency (UHE) at low pressure (LP) (below 40MPa), with regards to the one reached with liquid and sub-two micron particles (around 100MPa). The use of two detector systems (UV and ELSD) connected in series to the UHE-LP-SFC system provides complementary responses, due to their specific detection principles. Working in a first part with three coupled Kinetex C18 columns (45cm total length), the effect of modifier nature and percentage were studied with two reference oils, argan and rapeseed, chosen for their different and well-known TG composition. The analytical method was developed from previous studies performed with fully porous particles (FPP). Optimized conditions with three Kinetex were as follows: 17°C, 12% of ACN/MeOH (90/10; v/v). With these conditions, and by using an increased length of Kinetex C18 column (60cm), another additional column was selected from ten different commercial SPP C18 bonded phases, by applying a Derringer function on varied parameters: theoretical plate number (TPN), separation index (SI) for critical pairs of peaks (the peaks of compounds difficult to separate due to subtle structural differences), the analysis duration, and the total peak number. This function normalizes the values of any parameters, between 0 and 1, from the worst value to the better, allowing to take account of various parameters in the final