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Pesca. Publicaciones

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Equinodermos

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Pesca. Planes de manejo

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Imagen de apoyo de  Queensland Rail National program management

Queensland Rail National program management

Por: Mario Jheinner Vargas Cubides | Fecha: 2010

The creation of the PMO as a centralized unit formalizes project practices increasing the level of maturity. The expected level in the maturity model is to develop a continuously improvement in project management among the portfolio in all the stages of the project life cycle. This expectation could be achievable due to from the creation of the PMO the objective is to standardize, measure, control and communicate the PM practices. The other factor that enhances this level of maturity expected is that the head and the board of the organization have pointed out the benefits of use project management.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Artículos
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Queensland Rail National program management

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Imagen de apoyo de  Clinical characteristics of patients with concomitant oral lichen planus and thyroid disease

Clinical characteristics of patients with concomitant oral lichen planus and thyroid disease

Por: Jairo; Wilhelmsen Robledo Sierra | Fecha: 2015

Abstract: OBJECTIVE: To study the prevalence and profile of thyroid disease in a cohort of referred patients with oral lichen planus (OLP) in comparison with a random population sample and to examine the clinical characteristics of OLP patients with and without thyroid disease. STUDY DESIGN: Data from 1611 patients with OLP and 1615 patients from the general population were collected by using a standardized registration method. Patients with OLP using levothyroxine (OLP/levothyroxine+) were re-examined to collect information about existing OLP lesions and to confirm the thyroid disease diagnosis. The clinical characteristics of OLP lesions in this group were compared with those in an age- and gender-matched population of patients with OLP without a history of thyroid disease or levothyroxine medication (OLP/levothyroxine-). RESULTS: Nearly 11% (n = 170) of the patients with OLP were taking levothyroxine compared with 2.5% (n = 40) of the controls (multivariate odds ratio 2.99, 95% confidence interval 2.03-4.44; P < .0001). No difference was found in the thyroid disease profile between the groups. At the time of re-examination, patients with OLP/levothyroxine- displayed more erythematous OLP lesions and complained of more severe symptoms compared with the OLP/levothyroxine+ group (P < .001). CONCLUSION: The prevalence of thyroid disease in patients with OLP was significantly higher than in the general population. The OLP lesions of patients with concomitant thyroid disease have a different presentation over time, which indicates a specific subgroup of OLP." Resumen: OBJETIVO: Estudiar la prevalencia y el perfil de la enfermedad de la tiroides en una cohorte de pacientes remitidos con liquen plano oral (LPO) en comparación con una muestra aleatoria de una, y examinar las características clínicas de pacientes con LPO con y sin enfermedad de la tiroides. DISEÑO DEL ESTUDIO: Datos de 1.611 pacientes con LPO y 1.615 pacientes de la población general fueron recolectados usando un método estandarizado de registro. Los pacientes con LPO que estaban usando levotiroxina (LPO/levotiroxina+) fueron reexaminados para recolectar información sobre la existencia de lesiones de LPO y confirmar el diagnóstico de la enfermedad de la tiroides. Las características clínicas del LPO en este grupo fueron comparadas con un grupo, emparejado para edad y sexo, de pacientes con LPO sin historia de enfermedad de la tiroides o uso de levotiroxina (LPO/levotiroxina-). RESULTADOS: Aproximadamente el 11% (n = 170) de los pacientes con LPO estaban medicados con levotiroxina comparado con el 2.5% (n = 40) de los controles (OR multivariado 2.99, 95% CI 2.03-4.44; P < .0001). No se encontraron diferencias entre el perfil de la enfermedad de la tiroides entre los grupos. En el momento de la reexaminación, los pacientes con LPO/levotiroxina- mostraron más lesiones eritematosas de LPO y se quejaron de síntomas más severos en comparación con el grupo LPO/levotiroxina+ (P < .001). CONCLUSIÓN: La prevalencia de la enfermedad de la tiroides en pacientes con LPO es significativamente mayor que en la población general. Las lesiones de LPO en pacientes con enfermedad de la tiroides concomitante tiene una presentación diferente a través del tiempo, lo cual indica un subgrupo específico de LPO."
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Artículos
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Clinical characteristics of patients with concomitant oral lichen planus and thyroid disease

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Imagen de apoyo de  Functionalization of CoCr surfaces with cell adhesive peptides to promote HUVECs adhesion and proliferation

Functionalization of CoCr surfaces with cell adhesive peptides to promote HUVECs adhesion and proliferation

Por: María Isabel; Mas-Moruno Castellanos Arboleda | Fecha: 2017

Biomimetic surface modification with peptides that have specific cell-binding moieties is a promising approach to improve endothelialization of metal-based stents. In this study, we functionalized CoCr surfaces with RGDS, REDV, YIGSR peptides and their combinations to promote endothelial cells (ECs) adhesion and proliferation. An extensive characterization of the functionalized surfaces was performed by XPS analysis, surface charge and quartz crystal microbalance with dissipation monitoring (QCM-D), which demonstrated the successful immobilization of the peptides to the surface. Cell studies demonstrated that the covalent functionalization of CoCr surfaces with an equimolar combination of RGDS and YIGSR represents the most powerful strategy to enhance the early stages of ECs adhesion and proliferation, indicating a positive synergistic effect between the two peptide motifs. Although these peptide sequences slightly increased smooth muscle cells (SMCs) adhesion, these values were ten times lower than those observed for ECs. The combination of RGDS with the REDV sequence did not show synergistic effects in promoting the adhesion or proliferation of ECs. The strategy presented in this study holds great potential to overcome clinical limitations of current metal stents by enhancing their capacity to support surface endothelialization.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Artículos
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Functionalization of CoCr surfaces with cell adhesive peptides to promote HUVECs adhesion and proliferation

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Imagen de apoyo de  Research Perspectives on Functional Micro and Nano Scale Coatings

Research Perspectives on Functional Micro and Nano Scale Coatings

Por: Jaime Andrés; López Pérez Taborda | Fecha: 2016

Research topics related to the production of nanocomposites are the most important directions of development of new semiconductor engineering, ensuring high nanocomposites obtaining useful properties in the scope of biophysical characteristics, biomedical and piezoelectric applications. We present two case studies as Hydroxyapatite are in medical applications and aluminum nitride as acoustic wave sensor. Hydroxyapatite, is the main inorganic structure of the tooth enamel and bone and is a biomaterial that.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Artículos
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Research Perspectives on Functional Micro and Nano Scale Coatings

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Imagen de apoyo de  Latent gender inequalities in the well-being of physicians according to payment method for practicing medicine: a cross-sectional study

Latent gender inequalities in the well-being of physicians according to payment method for practicing medicine: a cross-sectional study

Por: Juan Nicolás; Bermedo Carrasco Peña Sánchez | Fecha: 2013

Background: Female physicians face extra challenges in their career development and tend to choose salary or other forms of alternative payment plans (APP). Fee-for-service (FFS) and APP may affect the well-being of female and male physicians differently. Three measures of well-being are: levels of career satisfaction, professional equity, and daily distress. The objectives are to identify differences in the levels of career satisfaction, fulfillment-recognition equity, and daily distress of physicians by gender and payment method, and to assess interactions between these two factors. Methods: A cross-sectional study was conducted in 2011 with physicians practicing in the Saskatoon Health Region, Saskatchewan, Canada. Resident physicians were excluded from the study. Eligible physicians completed a survey, assessing levels of daily distress, fulfillment-recognition equity, and career satisfaction as dependent variables. A multivariate analysis of variance (MANOVA), using the Wilks’ Lambda criterion, was conducted to study differences among the dependent variables by remuneration method and gender. Multiple comparisons were performed as post-hoc tests. Results: Nearly half (382) of the 794 eligible physicians completed the questionnaire; 37.2% were female. Half were remunerated by FFS, a quarter by APP, and the remainder by blended forms. Career satisfaction and fulfillment-recognition equity were positively correlated to each other and daily distress was negatively correlated with both. According to the MANOVA results, the dependent variables were affected by gender but not by payment method, and there was no evidence of an interaction effect between payment method and gender. Women reported lower levels of career satisfaction (p=0.01) and fulfillment-recognition equity (p=0.01), and higher levels of daily distress (p=0.03).
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Artículos
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Latent gender inequalities in the well-being of physicians according to payment method for practicing medicine: a cross-sectional study

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