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Search Results: 1 - 10 of 25695 matches for " Rodríguez-Rey "
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Free flaps in Surgical Dermatology: comparison between fasciocutaneous and myocutaneous free flaps in facial reconstructions
Camacho-Martínez, Francisco Miguel;Rollón, Angel;Salazar, Clara;Rodríguez-Rey, Elena M;Moreno, David;
Anais Brasileiros de Dermatologia , 2011, DOI: 10.1590/S0365-05962011000600013
Abstract: background: dermatologic surgeons routinely harvest pedicled flaps at distance with an axial or random pattern to repair facial defects. these types of skin flaps are time-consuming and have high economic, social and personal costs. these drawbacks could be avoided with the introduction of a single-step transfer of free flaps to the recipient site, with microvascular anastomosis. objective: to demonstrate that better results are obtained with myocutaneous or fasciocutaneous free flaps and which one is more suitable in surgical dermatology. material and methods: we selected two patients of opposite sexes and similar ages who had undergone mohs surgery to remove recurrent malignant tumors that were located in the upper cheek bordering the zygomatic zone. the woman was treated with a fasciocutaneous radial free flap and the man with a rectus abdominis free flap. results: both patients had excellent immediate postoperative outcomes. complications observed in the male patient were related to a previous pulmonary alteration. the fasciocutaneous radial free flap reconstruction was easier to perform than the rectus abdominis free flap; nevertheless, the radial free flap is very thin and, although the palmaris longus tendon is used, it does not yield enough volume, requiring later use of implants. in contrast, the rectus abdominis free flap transfers a wide flap with enough fat tissue to expand in the future. as for the cosmetic results regarding the donor site, the rectus abdominis free flap produces better-looking scars, since secondary defects of the palmar surface cannot be directly closed and usually require grafting - a situation that some patients do not accept. conclusions: in surgical dermatology, each case, once the tumor has been extirpated, requires its own reconstructive technique. the radial free flap is suitable for thin patients who are willing to cover their arm with a shirt. the rectus abdominis free flap is best suited for obese patients with deep and volu
El corte de rocas ornamentales con discos diamantados: influencia de los factores propios del sistema de corte
Suárez del Río, L. M.,Rodríguez-Rey, A.,Calleja, L.,Ruiz de Argando?a, V. G.
Materiales de Construccion , 1998,
Abstract: A review of some relevant papers about the cutting of ornamental stones with diamond tools is presented here with the aim of being useful to the Natural Stone industries. Due to the length of this paper, it has been divided in two parts: in the first one, the influence of the factors of the cutting equipments (machinery, disks, cutting characteristics, etc) is reviewed, and in the second one, in the next number of this journal, attention will be paid to the intrinsic rock characteristics that influences its cuttability and, thus, the efficiency of the diamond tools. En este trabajo se hace una revisión de algunas publicaciones relevantes relacionadas con el corte de rocas ornamentales con discos diamantados, con el propósito de que pueda ser de utilidad a los industriales del Sector de la Piedra Natural Debido a la extensión del trabajo, se ha dividido en dos partes: en esta primera se analiza la influencia de los factores propios del sistema de corte (maquinaria, discos, características del corte, etc.), y en la segunda parte, en un próximo número de esta revista, se hará hincapié en las características propias de la roca que influyen en su cortabilidad y, por tanto, en el rendimiento de los útiles diamantados.
El corte de rocas ornamentales con discos diamantados: influencia de las características petrográficas de la roca
Rodríguez-Rey, A.,Suárez del Río, L. M.,Calleja, L.,Ruiz de Argando?a, V. G
Materiales de Construccion , 1998,
Abstract: This paper follows another one published in the preceding number of this same journal, that reviewed some scientific papers on the influence of the factors of the cutting equipments (machinery, cutting characteristics, disks, etc) on the efficiency of the cutting process of ornamental rocks with diamond disks. In this second part, the inner rock characteristics (mineralogy, texture and voids) affecting the cutting performance are considered. Some rock classifications based on their cuttability proposed by some authors and Institutions are also reviewed. Este trabajo es continuación de otro ya publicado en un número anterior de esta revista, en el que se revisaban algunos trabajos científicos sobre la influencia de los factores propios del sistema de corte (sierra, parámetros de corte, características del disco, etc.) en el rendimiento del proceso de corte de rocas ornamentales con discos diamantados. En esta segunda parte, se consideran las características propias de la roca (mineralogía, textura y espacios vacíos) que afectan a dicho rendimiento. También se hace una revisión de algunas clasificaciones de rocas (en función de su cortabilidad) propuestas por diversos autores e Instituciones.
Capillarity test monitored by X-ray computer tomography in sandstones. A comparative study with standard methods
Ruiz de Argando?a, V. G.,Rodríguez-Rey, A.,Calleja, L.,Suárez del Río, L. M.
Materiales de Construccion , 2008,
Abstract: Computerized axial tomography studies were conducted to analyze water movements inside rocks (specifically in La Marina sandstone, used to build some of the historic monuments in Asturias, northern Spain). The X-ray images of water uptake by the stone interior recorded during capillarity tests provided supplementary information not furnished by conventional methods. The three-dimensional images obtained showed the position of the water front over time and its relationship to rock petrography. The volume of water-soaked rock proved to be a more realistic measure of stone capillarity. The results obtained were compared to mean capillarity measured as recommended in Spanish and European standard UNE-EN 1925:1999. La Tomografía Axial Computerizada de rayos X (TAC) ha sido aplicada al estudio del movimiento del agua en el interior de las rocas, usando como modelo la arenisca de La Marina, roca utilizada en la construcción de algunos monumentos históricos en Asturias (norte de Espa a). Durante los ensayos de capilaridad se han registrado las imágenes de rayos X de la penetración del agua en el interior de la roca que suministran información no aportada por los métodos habituales. La reconstrucción tridimensional muestra la posición del frente de agua a lo largo del tiempo y su relación con las características petrográficas de la roca. La cuantificación del porcentaje en volumen de roca embebida en agua es una medida más real de la capilaridad de la misma. Los resultados así obtenidos han sido comparados con los de la capilaridad medida por el método descrito en la norma UNE-EN 1925:1999.
Reibergrama para la evaluación de la síntesis intratecal de C3c
Dorta-Contreras Alberto Juan,Noris-García Elena,Padilla-Docal Bárbara,Rodríguez-Rey Alexis
Arquivos de Neuro-Psiquiatria , 2006,
Abstract: INTRODUCCIóN: El diagrama de las razones de Reiber o reibergrama cobra cada día mayores usos para la caracterización de la síntesis intratecal de proteínas. El reibergrama fue definido para las clases mayores de inmunoglobulinas pero luego ha sido utilizado para evaluar otras proteínas basado en la teoría de la difusión molecular/velocidad de flujo del líquido cefalorraquídeo (LCR). MéTODO: El C3c, producto de la degradación del factor del complemento C3 y con una masa molecular de 145 KDa, se acerca a las características moleculares de la IgG para las leyes de la difusión de Fick. Se asume las constantes de la IgG en la fórmula de Reiber para evaluar la síntesis intratecal de C3c así como su correspondiente reibergrama. Se estudiaron 27 pacientes y 27 controles a los que se les dosificó albúmina y C3c en suero y LCR por inmunodifusión radial. RESULTADOS: Con el reibergrama propuesto para el C3c se evaluaron estos pacientes. Se comprueba la validez de este reibergrama para distintas condiciones de barrera con o sin síntesis intratecal de C3c. CONCLUSION: El reibergrama y su fórmula correspondiente propuesto para la C3c puede ser usado para la evaluación de la síntesis intratecal de C3c.
Impacto de un curso interdisciplinar de formación en Counselling y apoyo en la toma de decisiones a profesionales de un servicio de nefrología
García-Llana,H.; Barbero,J.; Remor,E.; Díaz-Sayas,L.; Rodríguez-Rey,R.; Peso,G. del; Selgas,R.;
Nefrología (Madrid) , 2011,
Abstract: a 12-hour training program was delivered to the professionals of a nephrology department. contents of the course were about difficult communication skills in health care interactions. counselling was the relational methodology instructed. the objective was to assess changes in attitudes in relation with bioethics principles and knowledge. variables were measured before and after the training program. sample was composed by 76 professionals (57% nurses, 26% auxiliary nurses y 17% nephrologists) for knowledge and 27 professionals for variable attitudes. considering the total sample, results show changes in implication with bioethics principles (p <0.05) and knowledge (p <0.001). there are differences related to the kind of profession. nurses benefit more from the training program attending in the variable knowledge (p <0.001).
Métodos microscópicos para la cuantificación del contenido en fase vítrea de escorias siderúrgicas
Rodríguez-Rey, A.,Suárez del Río, L. M.,Calleja Escudero, I.,Ruiz de Argando?a, V. G.
Materiales de Construccion , 1997,
Abstract: Some microscopy methods that can be applied to the quantification of the percentage of vitreous particles of blast furnace slags are reviewed. Details of sample preparation are included and the experimental procedure is briefly described. The main advantages and inconveniences of each method are also considered. All of these methods are appropriate for the routine control of slags that can be used as a cement addition, since they are simple, fast and inexpensive methods. En este trabajo se revisan algunos métodos de microscopía que pueden ser utilizados para la determinación del porcentaje de partículas vítreas de escorias de alto horno. Se tratan aspectos relacionados con la preparación de muestras y se describe brevemente el procedimiento operatorio. También se comentan las principales ventajas e inconvenientes de cada método. Todos ellos son adecuados para el control de las escorias que vayan a ser utilizadas como adiciones activas en la fabricación de cementos, dado que son métodos sencillos, rápidos y económicos.
Reibergrama para la evaluación de la síntesis intratecal de C3c
Dorta-Contreras, Alberto Juan;Noris-García, Elena;Padilla-Docal, Bárbara;Rodríguez-Rey, Alexis;Bu-Coifiu-Fanego, Raisa;Magraner-Tarrau, María Esther;Martí-Brenes, Mauricio;
Arquivos de Neuro-Psiquiatria , 2006, DOI: 10.1590/S0004-282X2006000400010
Abstract: introduction: reiber's quotient diagram or reibergram has a growing apply for characterize the intratecal synthesis of proteins. firstly reibergrama was used for the major classes of immunoglobulins but later it was used to evaluate other proteins based on the theory about molecular flux/cerebrospinal fluid (csf) flow rate. method: c3c is a degradation product of complement factor c3 with 145 kda and approaches to igg molecular characteristics according with fick's diffussion laws. it was assumed igg constants and graphic for igg constants and graphic to evaluate the intrathecal synthesis of c3c. twenty-seven patients and 27 controls were studied. serum and csf c3c and albumin were quantified by immunodiffusion. results: the patients with the c3c proposed reibergram were evaluated. it has been proved its validity under several csf blood barrier conditions. conclusion: reibergram for c3c can be used for the evaluation of the intrathecal synthesis of this protein.
C3c intrathecal synthesis evaluation in patients with multiple sclerosis
Padilla-Docal, Bárbara;Dorta-Contreras, Alberto J;Fundora-Hernández, Hermes;Noris-García, Elena;Bu-Coifiu-Fanego, Raisa;González-Hernández, Marlen;Rodríguez-Rey, Alexis;
Arquivos de Neuro-Psiquiatria , 2007, DOI: 10.1590/S0004-282X2007000500013
Abstract: introduction: multiple sclerosis (ms) is a chronic, inflammatory and progressive disease of the central nervous system in which local inflammatory injuries of the brain white matter appears, being the most outstanding feature the myeline loss (demyelination). objective: to determine if the complement system might be involved in the ms immunopathogeny favouring the mechanism intervening in the myelin destruction. method: samples of sera and csf from twelve patients with a diagnosis of ms obtained at the moment of the admission to the hospital at the beginning of the break out, were collected. levels of c3c and albumin in sera and in csf were quantified using radial immunodiffusion plates. results: high values over 80% of intrathecal synthesis were obtained except in one of the patients. conclusion: intrathecal synthesis of c3c and its liberation to the csf means that the activation of the complement system in any of the two ways has taken place, and that once performed its biological functions, has suffered a degradation process.
sICAM-1 intrathecal synthesis and release during the acute phase in children suffering from Coxsackie A9 and S. pneumoniae meningoencephalitis
Dorta-Contreras, Alberto J.;Lewczuk, Piotr;Padilla-Docal, Bárbara;Noris-García, Elena;Coifiu-Fanego, Raisa Bu;Sánchez-Martínez, Consuelo;Rodríguez-Rey, Alexis;González-Hernández, Marlén;
Arquivos de Neuro-Psiquiatria , 2008, DOI: 10.1590/S0004-282X2008000400013
Abstract: the intercellular adhesion molecule is a transmembrane glycoprotein belonging to the immunoglobulin superfamily. serum and cerebrospinal fluid (csf) soluble intercellular adhesion molecule 1 (sicam-1) from normal control children as well as from children with guillain-barré syndrome (gbs), with coxsackie a9 virus meningoencephalitis and with streptococcus pneumoniae meningoencephalitis were studied. sicam-1 was quantified using an immunoenzimatic assay and albumin using the immunodiffusion technique in both biological fluids. increased sicam-1 values in csf in patients with gbs correspond to an increase of the albumin csf/serum quotient. in contrast, in inflammatory diseases like s. pneumoniae and coxsackie a9 virus meningoencephalitis an increased brain-derived fraction was observed. in particular cases these values are 60-65% and 70-75% respectively. the results indicate an additional synthesis of sicam-1 in subarachnoidal space during central nervous system (cns) inflammatory process. an important role of sicam-1 in the transmigration of different cell types into csf during cns inflammation in children with s. pneumoniae and coxsackie a9 meningoencephalitis may be suggested.
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