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Search Results: 1 - 10 of 553364 matches for " María T.; González "
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The experience of suffering in main care takers of patients with cancer-pain and non-cancer pain La experiencia de sufrimiento en cuidadores principales de pacientes con dolor oncológico y no oncológico A experiência de sofrimento em cuidadores principais de pacientes com dor oncológica e n o oncológica
KRIKORIAN D ALICIA,LEZ A MARíA CLARA,GONZáLEZ T OLGA,PALACIO G CAROLINA
Avances en Enfermería , 2010,
Abstract: The purpose of the study is to describe the experience of suffering among informal care takers of patients with cancer-pain and non-cancer pain at three health institutions of Medellín-Colombia. It is a qualitative study of phenomenological type. The sample consisted of 16 care takers of patients who suffered cancer-pain and non-cancer pain. The information was gathered through a semi-structured interview, the level of suffering was quantified through the emotional thermometer as a complementing element to the qualitative approach. The data obtained were analyzed through categories and profiles previously defined which showed the most common meaning, level and factors of suffering among the interviewed care takers. The results showed that the majority of care takers experienced high levels of suffering. They reported feelings of sadness and satisfaction in a contradictory manner. In the cognitive realm, they associated suffering with pain and the good execution of their activity; in the behavioral field, they expressed that suffering was related to the difficulty in controling the patient’s physical symptoms, and with the deferral of their own life activities. In conclusion, the psychological support received by the care takers was perceived as a protecting factor to reduce suffering; the type of pain was related to the experience of suffering and the care taker’s role, who were mostly female care takers of patients with cancer pain. The interviewed care takers were at risk of presenting Burnout due to the multiple demands inherent to their role. El objetivo de la investigación es describir la experiencia de sufrimiento de los cuidadores informales de pacientes con dolor oncológico y no oncológico de tres instituciones de salud de Medellín. Es una investigación cualitativa de tipo fenomenológico. La muestra estuvo conformada por 16 cuidadores de pacientes con dolor oncológico y no oncológico. La información se recolectó a través de una entrevista semiestructurada y se cuantificó el nivel de sufrimiento por medio del termómetro emocional como complemento al enfoque cualitativo. Los datos obtenidos se analizaron por medio de categorías y perfiles previamente definidos, lo cual dio cuenta del significado, el nivel y los factores de sufrimiento más comunes en los cuidadores entrevistados. Los resultados evidenciaron que la mayoría de los cuidadores experimentaron altos niveles de sufrimiento. Reportaron sentimientos de tristeza y satisfacción contradictoriamente. En la esfera cognitiva, asociaron el sufrimiento con dolor y con el hacer bien su actividad; y e
Un acercamiento teórico a la modelación del transporte de solutos en el suelo. Primera Parte
Alonso González,María T; López Seijas,Teresa; Ruiz,María Elena;
Revista Ciencias T??cnicas Agropecuarias , 2010,
Abstract: at the present time exist great variety of models able to help in the interpretation of the processes of water and solute transport in the agriculture. presently work theoretical focuses are exposed that base the transport of pollutants in soils, which are indispensable for the understanding and implementation of tools that allow an efficient approach to the complex reality of the system water-plant-soil. in this first part leaves the interactions of the solutes within the profile of soil, specifically the transport with and without molecular diffusion. as well as, the mathematical pattern of the displacement in r epresentative elementary volume , making use of studies summarized by pfannkuch in 1962. in which it related the value of d a to the peclet number of molecular diffusion. this way gived the bases to open the angular stone of the solute transport in porous media, the commonly well-known equation of convection-dispersion.
CONSTRUCCIóN Y CALIBRACIóN DE UN EQUIPO ISOPIéSTICO PARA LA DETERMINACIóN DE COEFICIENTES OSMóTICOS Y COEFICIENTES DE ACTIVIDAD
Romero,Carmen M; Luis H,Blanco; González,María E; Dávila,María T;
Revista Colombiana de Química , 2006,
Abstract: an isopiestic apparatus for determination of osmotic coefficients of aqueous solutions using nacl reference solutions is described. measurements were made at 288,15 k, 293,15 k and 298,15 k. equilibrium times between 12 and 20 days were required for molalities between 0,1 and 0,6 m. osmotic coefficients of aqueous kcl solutions obtained by the isopiestic method and calculated activity coefficients are compared with literature data.
Effect of Polishing Procedure on the Roughness and Bacterial Adhesion of Provisional Restorative Materials  [PDF]
Néstor Usiel Lara-Jara, Gabriel Fernando Romo-Ramírez, María del Pilar Goldaracena-Azuara, Antonio Aragón-Pi?a, Claudia Butrón-Téllez Girón, María Verónica Méndez-González, Ana María González-Amaro
Microscopy Research (MR) , 2018, DOI: 10.4236/mr.2018.62002
Abstract: Provisional prosthetic restoration materials are exposed to oral cavity producing on the surface biofilm where different factors such as surface roughness and porosity can condition their formation and organization and can create stagnation areas that promote the bonding of organic particles, thus facilitating the formation and maturation of the biofilm. The purpose of this study was to compare surface roughness of two provisional prosthetic restorations materials and their bacterial susceptibility. In this study, two provisional restoration materials were used in two groups, A polymethyl methacrylate acrylic (NicTone MDC DENTAL) and B bis-acryl resin (Protemp 4 ESPE 3M). A total of 80 samples (40 samples of each material) were in thick plates of 10 × 10 mm and 2 mm high. 20 samples of each material were polished, while 20 were left unpolished. Subsequently, the samples were observed by Atomic Force Microscopy for their evaluation of surface roughness. The values were analyzed with t-test, Mann-Whitney U test and Kruskal Wallis test. The samples were microbiologically inoculated with the strains obtained and identified from a provisional polymethyl methacrylate acrylic restoration in a patient, in order to observe bacterial adhesion using a Scanning Electron Microscope. Two strains, Enterococcus faecalis and Pseudomona luteola, were identified. The presence of the microorganisms was observed on the surface of both materials, either polished or unpolished, with a lower level of microorganism adhesion found on the bis-acrylic resin. There was a significant difference about surface roughness in the groups A and B with p < 0.05; meanwhile there was also a significant difference between polished polymethyl methacrylate and polished bis-acrylic resin (p = 6.7 × 10-8). We found that the polished bis-acrylic resin showed lower surface roughness and bacterial adhesion in comparison with the polymethyl methacrylate.
El ABC para el diagnóstico y prevención de las enfermedades genéticas en la atención primaria de salud: bases bioquímicas y su aplicación en la enfermedad cerebrovascular isquémica
Surí González,Julia; Oca?a Gil,María; Liriano Ricabal,María; Días Requeiro,Luisa; Masót Rangel,Antonio; González Sosa,Sonia;
MediSur , 2009,
Abstract: programs aimed at preventing genetic diseases reduce their fatal consequences among the population. therefore, it is important to correctly prepare the medical staff working in the maternal-infant program. subjects related with these issues are thought since the pre-graduate education, in the second year of medicine studies and in the postgraduate courses as part of the general comprehensive medicine residency within the subject medical genetics. the importance of this topic supported the creation of this pamphlet, based on a bibliographical review of the subject related with the implementation of the diagnosis and prevention program for genetic disease within the practice of genetic advising. the objective of this pamphlet is to provide the basic theoretical elements to facilitate the implementation of health actions in the community, which can be further review using the conventional bibliography.
Comportamiento de la TSH y la T4 en una cohorte de pacientes con arritmia cardiaca tratados con amiodarona u otros antiarrítmicos Behavior of TSH and T4 in a cohort of patients with cardiac arrhythmia treated with amiodarone or other antiarrhythmics
Erwing A Vargas,Javier D González,María T Pérez,Carlos E Granados
Revista Colombiana de Cardiología , 2008,
Abstract: La amiodarona es uno de los antiarrítmicos de uso más extendido, pero de la misma forma es un medicamento con efectos adversos bien conocidos y a múltiples niveles; uno de los más importantes es el que se describe para el tejido tiroideo. Cerca de 80% de los pacientes que la toman de forma indefinida, presentarán algún efecto adverso; sin embargo, menos de 15% la suspenderán. En la glándula tiroides, los mecanismos de lesión se relacionan, por su semejanza estructural, con la levotiroxina, la liberación de altas concentraciones de yodo y la inducción de reactividad inmune, entre otras. No obstante, la mayoría de los pacientes permanece eutiroideos. Este estudio describe la variación de la función tiroidea a corto plazo, en 77 pacientes que recibieron diferentes tipos de antiarrítmicos, que no tenían factores de riesgo asociados a disfunción tiroidea, y que se reclutaron en el servicio de hospitalización. Se tomaron muestras de TSH al inicio y al cabo de tres meses de seguimiento. Se observaron niveles de TSH normales en 26% (43 pacientes) y tendencia a valores más altos en el control al tercer mes en el grupo medicado con amiodarona. De manera adicional, se describió una proporción mayor de trastornos de la función de la glándula tiroides en la población masculina. Aminodarone is one of the most widespread used antiarrhythmics, but in the same way it is a medicine with well known side-effects at multiple levels; one of the most important ones is described for the thyroid tissue. Almost 80% of patients that receive it for an indefinite time will present an adverse effect; nevertheless, only less than 15% will discontinue it. Injury mechanisms are related, because of its structural similitude, to those of levothyroxine, with liberation of high iodine concentrations and induction of immune reactivity, among others. However, most patients remain in euthyrod state. This study describes thyroid function variation at short term in 77 patients that received different type of antiarrhythmics, that had no risk factors associated to thyroid dysfunction and that were recruited in the hospital ward. TSH samples were taken at the beginning of the study and at three months of follow-up. 26% (43 patients) had normal TSH plasma levels with a tendency to higher value levels after 3 months in the group receiving amiodarone. Additionally, a higher proportion of thyroid gland disorders were described in the male population.
Morfea en ni os: Revisión bibliográfica y puesta al día Morphea in children
Bernardita Romero D,María Soledad Zegpi T,Celso Castillo A,Sergio González B
Revista chilena de pediatría , 2004,
Abstract: Introducción: La Morfea o Esclerodermia localizada es una enfermedad del tejido conectivo de etiología desconocida. Es asintomática y de curso variable, generalmente autolimitada, puede dejar secuelas funcionales y estéticas importantes. Objetivos: Describir las características clínicas de la enfermedad y el manejo terapèutico actual. Material y Método: Revisión bibliográfica y de Medline. Resultados: La patología se debería a un depósito excesivo de colágeno, lo que se manifiesta como una atrofia epidérmica y un engrosamiento e induración de la dermis. Diversos mecanismos estarían involucrados, destacando la radiación, vacunas, infecciones, inmunológicos y traumas. En ni os la presentación clínica es diversa, y se clasifica en Lineal, en Placa y Generalizada. No existe un examen diagnóstico, debiendo correlacionarse la clínica con los diversos métodos de estudio. Los tratamientos màs usados son los corticoides, análogos de vitamina D, antirreumáticos y fototerapia. Conclusiones: Dado lo infrecuente y autolimitado de la enfermedad, no existe acuerdo en cuanto a quienes deben ser tratados, ni en la forma, ni en la duración del tratamiento. Su pronóstico depende del tipo de lesión y de las características de cada paciente Morphea or localized scleroderma is a connective tissue disease of unknown aetiology. There is excessive collagen deposition, with thickening and induration of the skin and subcutaneous tissue. Associations with radiation, vaccination, infections, autoimmune disease and trauma have been documented. Usually it is asymptomatic and self limiting, but with a variable course, sometimes causing important functional and aesthetic secuelae. In childhood, morphea shows a greater variety of clinical presentations. They can be classified as linear, deep, plaque like and generalised. No diagnostic laboratory tests are available, so there needs to be an accurate relation between clinical findings and tests solicited. Therapy is not standardised, with lack of clear criteria about whom to treat and for how long. Therapeutic agents include steroids, vitamin D analogs and anti-rheumatic agents. The prognosis depends on the type of lesion and the characteristics of the patient
Biosorption and Biomineralization of U(VI) by the Marine Bacterium Idiomarina loihiensis MAH1: Effect of Background Electrolyte and pH
Fernando Morcillo, María T. González-Mu?oz, Thomas Reitz, María E. Romero-González, José M. Arias, Mohamed L. Merroun
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0091305
Abstract: The main goal of this study is to compare the effects of pH, uranium concentration, and background electrolyte (seawater and NaClO4 solution) on the speciation of uranium(VI) associated with the marine bacterium Idiomarina loihiensis MAH1. This was done at the molecular level using a multidisciplinary approach combining X-ray Absorption Spectroscopy (XAS), Time-Resolved Laser-Induced Fluorescence Spectroscopy (TRLFS), and High Resolution Transmission Electron Microscopy (HRTEM). We showed that the U(VI)/bacterium interaction mechanism is highly dependent upon pH but also the nature of the used background electrolyte played a role. At neutral conditions and a U concentration ranging from 5·10?4 to 10?5 M (environmentally relevant concentrations), XAS analysis revealed that uranyl phosphate mineral phases, structurally resembling meta-autunite [Ca(UO2)2(PO4)2 2–6H2O] are precipitated at the cell surfaces of the strain MAH1. The formation of this mineral phase is independent of the background solution but U(VI) luminescence lifetime analyses demonstrated that the U(VI) speciation in seawater samples is more intricate, i.e., different complexes were formed under natural conditions. At acidic conditions, pH 2, 3 and 4.3 ([U] = 5·10?4 M, background electrolyte = 0.1 M NaClO4), the removal of U from solution was due to biosorption to Extracellular Polysaccharides (EPS) and cell wall components as evident from TEM analysis. The LIII-edge XAS and TRLFS studies showed that the biosorption process observed is dependent of pH. The bacterial cell forms a complex with U through organic phosphate groups at pH 2 and via phosphate and carboxyl groups at pH 3 and 4.3, respectively. The differences in the complexes formed between uranium and bacteria on seawater compared to NaClO4 solution demonstrates that the actinide/microbe interactions are influenced by the three studied factors, i.e., the pH, the uranium concentration and the chemical composition of the solution.
Inhibidores de germinación y crecimiento de maleza y hortalizas, en residuos de amaranto (Amaranthus hypochondriacus L.)
Tejeda-Sartorius, Olga;Rodríguez-González, María T.;
Agrociencia , 2008,
Abstract: plant residues can have an allelopathic effect on certain weed species, a phenomenon that can be used for their control, but they can also affect crop germination, growth and yield. the objectives of this study were: 1) to evaluate the effect of amaranth (amaranthus hypochondriacus l.) residue aqueous extract on germination and growth of echinochloa crus-galli (l.) beauv., radish (raphanus sativus l. var. champion) onion (allium cepa l.) and carrot (daucus carota l. var. nantes); 2) analyze the inhibitory potential of organic extracts from a. hypochondriacus amaranth residues on germination and growth of a. hybridus l. and e. crus-galli. two biological tests were conducted. for the first, aqueous extracts were prepared in a ratio of 1:2.5 (v/v) amaranth residue:water. the treatments were different concentrations of total phenols phenolic of the extracts. for the second bioassay, organic extracts were prepared in soxhlet equipment using solvents of increasing polarity (hexane, dichloromethane, and methanol). the extract derived from each solvent was one test treatment. the highest concentrations of total phenolics (108 and 54 ppm) inhibited germination of e. crus-galli and radish (57 and 56%), and radicle (51 to 76%) and shoot (47 to 86%) growth of the species tested. the organic extracts delayed germination. the dichloromethane fraction inhibited a. hybridus radicle (34%) and shoot (66%) growth. the three organic fractions inhibited e. crus-galli radicle growth (25% on average), while the methanol fraction decreased shoot growth (31%). it is concluded that dry amaranth residues possess substances that inhibit germination or growth of echinochloa crus-galli, radish, onion and carrot. the aqueous and organic extracts affect the analyzed species differentially.
Estado actual y perspectiva de las pruebas relacionadas con el estudio de la función tiroidea
Alavez Martín,Ernesto; Rodríguez González,Julio C.; Marrero Rodríguez,María T.;
Revista Cubana de Endocrinolog?-a , 2003,
Abstract: the thyroid diseases may be diagnosed in most of cases by the clinics. however, there are circumstances that required thyroid function tests to correctly assess the patient in initial stages of thyroid dysfunction and give an adequate treatment on an individual basis and the follow-up of the disease. this review makes reference to the tests used to assess the condition of the thyroid function and mentions their advantages, limitations and present trends. the determination of tsh by second and third generation procedures allow setting up diagnoses of primary hyperthyroidism and hypothyroidism, even in the subclinical forms of both entities since or hypersecretion or inhibition are respectively exposed, and they also allow prescribing the right dose of 1-levothyroxine and orienting towards a hypophyseal cause of thyroid dysfunction. t4 determination is of great value for finding out the intensity of thyroid dysfunction and furthermore assessing the effectiveness of the treatment in the first weeks. t3 determination is mainly indicated when the so-called t3-caused hyperthyroidism is suspected. the determination of total t4 and t3 gives rise to a wrong interpretation regarding the conditions that change the thyroxine-transporting globulin (tbg). the present trend is the use of tsh as an initial test for diagnosing the thyroid dysfunction, which should be indicated taking the clinic into account, and if necessary, it should be associated with the determination of free t4 or free t3.
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