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Search Results: 1 - 10 of 425046 matches for " M Santos-Sainz "
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The imaginaries of the future journalists in France
M Santos-Sainz
Revista Latina de Comunicación Social , 2013,
Abstract: This article analyses how differently future journalists perceive the professional and social realities of journalism according to their gender and socio-economic background. The study is based on two methods. The first method is the empirical analysis of the social features of the students of the schools of journalism of the public universities of Strasbourg, Bordeaux, Tours and Marseille, at the start of their studies. The second method is a series of in-depth interviews that investigate the family history, values and perceptions about journalism of the students of the Institute of Journalism of Bordeaux. The results show that journalism students are not a homogeneous group. Their social backgrounds are remarkably different and greatly influence their perception of the profession of journalism.
Los imaginarios de los futuros periodistas en Francia
M Santos-Sainz
Revista Latina de Comunicación Social , 2013,
Abstract: El artículo se centra en investigar las diferencias de percepción de las realidades profesionales y sociales según la pertenencia socio-profesional del ámbito familiar de los futuros periodistas y según la pertenencia de género. La metodología se basa en dos niveles de estudio. El primero responde al análisis de los datos empíricos sobre las características sociales de los estudiantes de periodismo antes de integrar los estudios dispensados por los centros de formación profesionalizada en periodismo de las universidades públicas de Estrasburgo, Burdeos, Tours y Marsella. El segundo nivel de análisis se construye a partir de toda una serie de entrevistas en profundidad que trazan el pasado familiar y permiten conocer los valores y representaciones de la profesión de los estudiantes del Instituto de Periodismo de Burdeos. Los resultados demuestran que los estudiantes de periodismo no son una categoría homogénea. Las diferencias respecto a su origen social resultan notables e influyen sobremanera en el imaginario de la profesión.
Problemas de utilización de medicamentos en pacientes enterostomizados
Sainz,M. L.; Redín,M. D.; San Miguel,R.; Baleztena,J.; Santos,M. A.; Petri,M.; Notivol,M. P.;
Anales del Sistema Sanitario de Navarra , 2003, DOI: 10.4321/S1137-66272003000500006
Abstract: the practice of intestinal stoma, transitory or permanent, has a series of implications of a physiological, pharmacological, psychological and communitarian character that must be attended to in an integral and individualised way for each patient. frequently, the ostomised patient is subjected to pharmacological therapy. however, the foreseeable effect of the medicines administered can be affected by factors related to the stoma. thus, descriptions have been made of extensive resections of ileum that affect the process of the oral absorption of medicines, especially in pharmaceutical forms of enteric covering, delayed release and pills. this would mean access of the unabsorbed portion of the active principle to the collecting device through the faeces and a possible alteration of the duration and intensity of the pharmacological effect. on the other hand, pharmaco surveillance studies have revealed that numerous active principles produce changes in intestinal motility, either on the basis of its fundamental mechanism of action (laxatives, anti-diarrhoea, prokinetics), or as a collateral or secondary effect (antiacids , antidepressants, antihistamines, opioid analgesics). the appearance of constipation and, especially, of diarrhoea can be disturbing and worrying for ostomised patients, and particularly grave in ileostomised patients, due to the dehydration to which it can give rise. similarly, changes in the colour and odour of faeces, secondary to the administration of medicines (ferrous salts, aluminium hydroxide, bismuth compounds) can needlessly alarm the patients who detect them in the ostomy collecting device (pouch). all these factors can create difficulties for the adhesion of the patient to the proscribed treatment and, as a result, affect its success. however, they can be avoided, corrected or justified with good counselling by the health professionals involved in caring for enterostomized patient.
Imágenes transitorias. Globalización y modificaciones urbanas en ciudades del norte de México
Eloy Méndez Sainz
Región y sociedad , 1996,
Abstract: Las expectativas mexicanas de inserción en los mercados globales, han sido puestas en las ciudades. Aunque frente a limitaciones de fondo, emerge el mercado de la imagen, uno de los renglones de mayor agresividad competitiva. En el escenario urbano, las interrogantes en torno al qué y cómo vender se anteponen por regla a políticas orientadas al bienestar social. En el ámbito particular de la Frontera Norte, formada por ciudades de crecimiento acelerado con ritmo sostenido a lo largo del siglo, tales preguntas parecen plantearse con mayor intensidad, a la par que el incremento de migrantes de paso. Así, los ambientes fronterizos se configuran mediante la proliferación obsesiva de toda oferta posible, para captar todo consumidor existente. Ante un consumidor en tránsito, de actitud compulsiva, el atractivo visual ha de ser único y contundente. Este empleo del espacio físico es una experiencia que tiende a ser trasladada territorio adentro, mediante un instrumento de intervención convincente: los megaproyectos urbanísticos. Las realizaciones en Tijuana, y luego las tentativas en Hermosillo y Culiacán, muestran operativos eficientes en el trastocamiento de formas urbanas.
Estudio microbiológico comparativo de yogur fresco y termizado en un modelo animal in vivo Comparative microbiological study of fresh and heat-treated yoghurt in an in vivo animal model
J. E. García de los Ríos,J. Santos Jiménez Gómez,P. A. Jiménez Gómez,M.a P. Reche Sainz
Nutrición Hospitalaria , 2003,
Abstract: En un ensayo agudo, ratas en ayunas de 24 h fueron sondadas con 2 ml de yogur fresco, yogur termizado o agua destilada, y se sacrificaron a las 2, 4, 8 y 24 h después, siendo comparadas con ratas sin sondar. Se determinó la supervivencia de las bacterias lácticas del yogur administrado en estómago e intestinos de los animales, y si las bacterias aisladas tenían el perfil de las cepas de Lactobacillus delbrueckii subsp. bulgaricus y Streptococcus thermophilus aisladas originalmente del yogur. Tambien se hizo el recuento del número de microorganismos totales que crecían en el medios para lactobacilos y estreptococos lácticos. Se hicieron análisis de los diferentes tipos de colonias resultantes en los medios para lactobacilos y estreptococos lácticos. Ninguna de las colonias caracterizadas en este ensayo agudo resultó ser L. delbrueckii subsp. bulgaricus o S. thermophilus. El análisis estadístico de los resultados no mostró diferencias significativas en el log UFC · g-1, de la microbiota intestinal de los cuatro grupos de animales en ninguno de los tiempos. En un ensayo crónico, se sacrificaron tres grupos de animales, alojados en células individuales de metabolismo, tras 30 días de alimentación ad libitum con dieta semisintética con 10% de yogur fresco, con 10% de yogur termizado o solo con dieta semisintética. Los resultados no mostraron diferencias significativas en el log UFC · g-1 de los microorganismos de la microbiota intestinal entre los tres grupos de animales en ninguno de los tiempos. A su vez, se caracterizaron los diferentes tipos de colonias resultantes en los medios para lactobacilos y estreptococos lácticos, y ninguna de las colonias caracterizadas en este ensayo crónico resultó ser L. delbrueckii subsp. bulgaricus o S. thermophilus. In an acute assay, rats fasted for 24 h were sounded with 2 ml of fresh yogurt, sterilised yogurt or distilled water, and sacrificed at 2, 4, 8 and 24 h. They were compared with non-sounded rats. The survival of the lactic bacteria of the yogurt administered in the animals’ stomach and intestines was determined, and the bacteria isolated were to the Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus profiles belonging to the strains isolated originally from the yogurt. Counts of the total number of microorganims that were grown in lactobacilli and lactic streptococci media were also made. Analyses of the different types of resulting colonies in the lactobacilli and lactic streptococci media was performed. No L. delbrueckii subsp. bulgaricus or S. thermophilus were characterized in this ac
Estudio microbiológico comparativo de yogur fresco y termizado en un modelo animal in vivo
García de los Ríos,J. E.; Santos Jiménez Gómez,J.; Jiménez Gómez,P. A.; Reche Sainz,M.a P.; álvarez Dávila,F.; Rojas Mendoza,A. M.a;
Nutrición Hospitalaria , 2003,
Abstract: in an acute assay, rats fasted for 24 h were sounded with 2 ml of fresh yogurt, sterilised yogurt or distilled water, and sacrificed at 2, 4, 8 and 24 h. they were compared with non-sounded rats. the survival of the lactic bacteria of the yogurt administered in the animals? stomach and intestines was determined, and the bacteria isolated were to the lactobacillus delbrueckii subsp. bulgaricus and streptococcus thermophilus profiles belonging to the strains isolated originally from the yogurt. counts of the total number of microorganims that were grown in lactobacilli and lactic streptococci media were also made. analyses of the different types of resulting colonies in the lactobacilli and lactic streptococci media was performed. no l. delbrueckii subsp. bulgaricus or s. thermophilus were characterized in this acute assay. the statistical analysis of the results did not show significant differences in the log ufc · g-1, of the intestinal microbiota microorganisms of the three groups of animals in any of the times. in a chronic assay, three groups of animals, after 30 days of nourishment ad libitum with either a semisynthetic diet with 10% of fresh yogurt, or with 10% of sterilised yogurt or controls, housed in individual metabolism cells, were sacrificed. the results did not show meaningful differences in the log ufc · g-1of the intestinal microbiota microorganisms from the three groups of animals in any of the times. in turn, in the study of the different types of colonies resulting in the lactobacilli and lactic streptococci media, no l. delbrueckii subsp. bulgaricus or s. thermophilus were characterised in this chronic assay. the results did not show meaningful differences in the log cfu · g-1 of the intestinal flora microorganisms from the three groups of animals in any of the times. in turn, no l. delbrueckii subsp. bulgaricus or s. thermophilus were characterised in this chronic assay.
Magnetic and dynamical photospheric disturbances observed during an M3.2 solar flare
C. Kuckein,M. Collados,R. Manso Sainz
Physics , 2015, DOI: 10.1088/2041-8205/799/2/L25
Abstract: This letter reports on a set of full-Stokes spectropolarimetric observations in the near infrared He I 10830 A spectral region covering the pre-, flare, and post-flare phases of an M3.2 class solar flare. The flare originated on 2013 May 17 and belonged to active region NOAA 11748. We detected strong He I 10830 A emission in the flare. The red component of the He I triplet peaks at an intensity ratio to the continuum of about 1.86. During the flare, He I Stokes V is substantially larger and appears reversed compared to the usually larger Si I Stokes V profile. The photospheric Si I inversions of the four Stokes profiles reveal the following: (1) the magnetic field strength in the photosphere decreases or is even absent during the flare phase, as compared to the pre-flare phase. However, this decrease is not permanent. After the flare the magnetic field recovers its pre-flare configuration in a short time (i.e., in 30 minutes after the flare). (2) In the photosphere, the line-of-sight velocities show a regular granular up- and down-flow pattern before the flare erupts. During the flare, upflows (blueshifts) dominate the area where the flare is produced. Evaporation rates of ~ $10^{-3}$ and ~ $10^{-4}$ g cm$^{-2}$ s$^{-1}$ have been derived in the deep and high photosphere, respectively, capable of increasing the chromospheric density by a factor of two in about 400 seconds.
Radical Decisions in Cancer: Redox Control of Cell Growth and Death
Rosa M. Sainz,Felipe Lombo,Juan C. Mayo
Cancers , 2012, DOI: 10.3390/cancers4020442
Abstract: Free radicals play a key role in many physiological decisions in cells. Since free radicals are toxic to cellular components, it is known that they cause DNA damage, contribute to DNA instability and mutation and thus favor carcinogenesis. However, nowadays it is assumed that free radicals play a further complex role in cancer. Low levels of free radicals and steady state levels of antioxidant enzymes are responsible for the fine tuning of redox status inside cells. A change in redox state is a way to modify the physiological status of the cell, in fact, a more reduced status is found in resting cells while a more oxidative status is associated with proliferative cells. The mechanisms by which redox status can change the proliferative activity of cancer cells are related to transcriptional and posttranscriptional modifications of proteins that play a critical role in cell cycle control. Since cancer cells show higher levels of free radicals compared with their normal counterparts, it is believed that the anti-oxidative stress mechanism is also increased in cancer cells. In fact, the levels of some of the most important antioxidant enzymes are elevated in advanced status of some types of tumors. Anti-cancer treatment is compromised by survival mechanisms in cancer cells and collateral damage in normal non-pathological tissues. Though some resistance mechanisms have been described, they do not yet explain why treatment of cancer fails in several tumors. Given that some antitumoral treatments are based on the generation of free radicals, we will discuss in this review the possible role of antioxidant enzymes in the survival mechanism in cancer cells and then, its participation in the failure of cancer treatments.
Aplicación del análisis de paleoesfuerzos a regiones plegadas: la compresión terciaria en el sector de Cari ena-Belchite (borde norte de la Cordillera Ibérica)
Cortés Gracia, A. L.,Casas Sainz, A. M.
Estudios Geologicos , 1996, DOI: 10.3989/egeol.96525-6269
Abstract: Palaeostress analysis from brittle mesostructures (mainly faults and stylolytes) in the norther border of the Iberian Chain (Cari ena-Belchite area) shows the existence of several compressional stress states, with 1, axes oriented NNE-SSW, NW-SE, ESE-WSW. NNE compression direction is consistent with the main shortening direction, responsible for the formation of most macro-structures. Some NE and NW compression directions are due to deflection of the principal compression by larger reverse faults and folds. The deflected compression axes are then perpendicular to macro-structures. ESE compression is early with respect to the main compressional stage, and corresponds either to a intra-mesozoic compression or an Early Tertiary shortening stage. The results obtained in this study indicate that palaeostress analysis in fold-and-thrust areas, even when deformation is not very strong (in this area the total shortening is less than 15 %) must be carefully interpreted, taking into account deflections of the stress fields due to larger macro-structures. La aplicación del análisis de paleoesfuerzos a las mesoestructuras frágiles (fundamentalmente fallas y picos estilolíticos) del borde norte de la Cordillera Ibérica en el sector de Cari ena-Belchite ha dado como resultado la determinación de cuatro direcciones de compresión: NNE-SSW, NE-SW, NW-SE y ESE-WSW. La dirección de compresión NNE es compatible con la dirección de acortamiento principal responsable de la formación de la mayor parte de las macroestructuras. Las direcciones NE-SW y NW-SE responden a la desviación de la compresión principal por la existencia de fallas inversas o pliegues mayores, colocándose entonces perpendicular o paralela a estos últimos. La compresión ESE es anterior al resto de las compresiones y podría corresponder al Mesozoico o bien a las primeras etapas del Terciario. Los resultados obtenidos en el presente estudio muestran que la interpretación de los resultados del análisis de paleoesfuerzos en áreas con pliegues y cabalgamientos (aun en el caso estudiado en que el acortamiento total es inferior al 15 %) debe hacerse con suma precaución y teniendo en cuenta todas las posibles desviaciones del campo de esfuerzos por estructuras mayores.
Mineralogia y sedimentologia del yacimiento de saponita de Yuncos (Toledo)
Pozo Rodríguez, M.,Casas Sainz de Aja, J.
Estudios Geologicos , 1992, DOI: 10.3989/egeol.92481-2370
Abstract: Mineralogy and textures of saponite-bearing bentonites and related facies have been studied in quarries located southwest of Yuncos village (Toledo) in the Madrid Neogene Basin. Results allow us to establish three stages related with the evolution of sedimentary environments, where bentonite deposits (middle stage) are at the boundary between lacustrine (lower stage) and distal alluvial facies (upper stage). Lower stage: Regressive mud flat deposits with paleopedogenic features, made up of green clays facies with variable detrital content and hydromorphic mottling at topo Clay mineralogy association: Smectite (tri-dioctahedral)-illite-(kaolinite). Middle stage: Transitional stage of shallow flooding with variable development of paleopedogenic features. The facies association is made up of saponitic brown clays with several textures (massive, fissile-Iaminated, brecciated) and occasional carbonates as calcite ooids or dolomite nodules. Clay mineralogy association: Smectite (trioctahedral)-illite-sepiolite-( kaolinite) . Upper stage: Progradation of distal alluvial fan deposits. The facies association is made up by reddish to brownish mudstones often with bioturbation features and hydromorphic mottling, with sporadic sandy inserts. Clay mineralogy association: Smectite (tri-dioctahedral)- illite-sepiolite-(kaolinite-chlorite). Illite, dioctahedral smectite, kaolinite and chlorite are interpreted as inherited clay minerals, whilst saponite and sepiolite are of authigenic origino Saponite origin is early diagenetic both by dioctahedral smectite transformation and neoformation, being an inhomogeneous genetic process so that the purest bentonite is located far away from distal alluvial progradation where the flooding is longer in time. From a genetic point of view, sepiolite is later than trioctahedral smectite sometimes being in short fibers on saponite sheets, at others in longer fibers as a cement, both cases related to salinity-alkalinity changes in the environment. Se estudia la mineralogía y textura de materiales bentoníticos de composición saponítica y sus facies asociadas, en canteras ubicadas al sur de Yuncos (Toledo), en la cuenca neógena de Madrid. Los resultados obtenidos permiten diferenciar tres episodios relacionados con la evolución de los medios sedimentarios, localizándose los depósitos bentoníticos (episodio medio) en el contacto entre facies lacustres (episodio inferior) y aluviales de orla distal (episodio superior). Episodio inferior: Depósitos de mud flat con evidencias de somerización (rasgos paleoedáficos), constituidos por facies
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