oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 365 )

2018 ( 539 )

2017 ( 572 )

2016 ( 830 )

Custom range...

Search Results: 1 - 10 of 361855 matches for " Beatriz Gómez-Ansón "
All listed articles are free for downloading (OA Articles)
Page 1 /361855
Display every page Item
Pattern of Regional Cortical Thinning Associated with Cognitive Deterioration in Parkinson’s Disease
Javier Pagonabarraga, Idoia Corcuera-Solano, Yolanda Vives-Gilabert, Gisela Llebaria, Carmen García-Sánchez, Berta Pascual-Sedano, Manuel Delfino, Jaime Kulisevsky, Beatriz Gómez-Ansón
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0054980
Abstract: Background Dementia is a frequent and devastating complication in Parkinson’s disease (PD). There is an intensive search for biomarkers that may predict the progression from normal cognition (PD-NC) to dementia (PDD) in PD. Mild cognitive impairment in PD (PD-MCI) seems to represent a transitional state between PD-NC and PDD. Few studies have explored the structural changes that differentiate PD-NC from PD-MCI and PDD patients. Objectives and Methods We aimed to analyze changes in cortical thickness on 3.0T Magnetic Resonance Imaging (MRI) across stages of cognitive decline in a prospective sample of PD-NC (n = 26), PD-MCI (n = 26) and PDD (n = 20) patients, compared to a group of healthy subjects (HC) (n = 18). Cortical thickness measurements were made using the automatic software Freesurfer. Results In a sample of 72 PD patients, a pattern of linear and progressive cortical thinning was observed between cognitive groups in cortical areas functionally specialized in declarative memory (entorhinal cortex, anterior temporal pole), semantic knowledge (parahippocampus, fusiform gyrus), and visuoperceptive integration (banks of the superior temporal sulcus, lingual gyrus, cuneus and precuneus). Positive correlation was observed between confrontation naming and thinning in the fusiform gyrus, parahippocampal gyrus and anterior temporal pole; clock copy with thinning of the precuneus, parahippocampal and lingual gyrus; and delayed memory with thinning of the bilateral anteromedial temporal cortex. Conclusions The pattern of regional decreased cortical thickness that relates to cognitive deterioration is present in PD-MCI patients, involving areas that play a central role in the storage of prior experiences, integration of external perceptions, and semantic processing.
Efecto de la privatización sobre el rendimiento de las empresas espa?olas privatizadas por medio de ofertas públicas de venta
Cabeza García,Laura; Gómez Ansón,Silvia;
Cuadernos de Administración , 2009,
Abstract: the effect of privatization on the performance of the spanish companies that were sold through public offers from 1985 to 2007 is analyzed in terms of mean and median difference assessment. once considered the sector effect, the analysis reveals a slightly better long term performance of the private companies. however, according to the study, explaining the success of privatization processes seems to require the consideration of some other factors such as exercised government control, presence of foreign investors, competence level or company size.
Efecto de la privatización sobre el rendimiento de las empresas espa olas privatizadas por medio de ofertas públicas de venta Efeito da privatiza o sobre o rendimento das empresas espanholas privatizadas por meio de ofertas públicas de venta Effect of privatization on the performance of Spanish companies sold through public offer
Laura Cabeza García,Silvia Gómez Ansón
Cuadernos de Administración , 2009,
Abstract: Este trabajo analiza el efecto de la privatización sobre el desempe o de las empresas espa olas que fueron privatizadas por medio de una oferta pública de venta entre 1985 y 2007. Con base en un análisis de diferencias de medias y medianas, los resultados parecen mostrar una leve mejora en el funcionamiento de las empresas privatizadas en un horizonte temporal de largo plazo, una vez considerado el efecto sectorial; pero también muestran la necesidad de considerar otros factores a la hora de explicar el éxito de los procesos privatizadores. Entre otros, el control ejercido por el Estado, la presencia de un inversor extranjero en el capital, el nivel de competencia o el tama o empresarial. Este trabalho analisa o efeito da privatiza o sobre o desempenho das empresas espanholas que foram privatizadas por meio de uma oferta pública de venda entre 1985 e 2007. Com base em um análise de diferen as de médias e medianas, os resultados parecem mostrar uma leve melhoria no funcionamento das empresas privatizadas em um horizonte temporário de longo prazo, uma vez considerado o efeito setorial; mas também mostram a necessidade de considerar outros fatores na hora de explicar o sucesso dos processos privatizadores. Entre outros, o control e exercido pelo Estado, a presen a de um investidor estrangeiro no capital, o nível de concorrência ou o tamanho empresarial. The effect of privatization on the performance of the Spanish companies that were sold through public offers from 1985 to 2007 is analyzed in terms of mean and median difference assessment. Once considered the sector effect, the analysis reveals a slightly better long term performance of the private companies. However, according to the study, explaining the success of privatization processes seems to require the consideration of some other factors such as exercised government control, presence of foreign investors, competence level or company size.
Stock splits: motivation and valuation effects in the Spanish market
Susana Menéndez,Silvia Gómez Ansón
Investigaciones Económicas , 2003,
Abstract: Resumen:Este trabajo analiza los determinantes que llevan a una empresa a realizar un desdoblamiento accionarial, así como los efectos riqueza asociados a su anuncio y realización. Los resultados sugieren que las empresas que realizan desdoblamientos tienen antes de la operación una cotización superior a la normal, consiguiéndose aumentos significativos tras el desdoblamiento en el número de transacciones y en el volumen por transacción. Además, se observan rentabilidades anormales positivas alrededor del día del anuncio y del día de realización del desdoblamiento, aunque en este último caso se anulan en las sesiones siguientes. Los resultados de este estudio sobre los determinantes de la decisión de realizar un desdoblamiento y la reacción del mercado de valores sugieren que, frente a otras explicaciones, resulta más determinante la hipótesis de liquidez en el mercado de capitales espa ol.
Combining Ability in Mixtures of Prairie Grass and Clovers  [PDF]
Miguel Jacinto Arturi, Mónica Beatriz Aulicino, Oscar Ansín, Gustavo Gallinger, Rodolfo Signorio
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.310163
Abstract: Our objective was to evaluate the combining ability among cultivars of forage species, commonly sown in temperate regions of Argentina using a short rotation system. Three genetically diverse cultivars of prairie brome grass (Bromus catharticus, cv Copetona, cv ?andú and cv Tango), a white clover cultivar (Trifolium repens, cv Lucero) and a red clover cultivar (T. pratense, cv Tropero) were evaluated. A randomized complete block design experiment was established in 2005. The treatments included five monocultures and ten binary mixtures. The experiment was harvested 6 times over an 18-month period. Cumulative dry matter yield (kg?ha–1) was calculated as the sum of the six individual harvests. Diallel analysis provided estimates of the general combining ability (GCA) and specific combining ability (SCA). Red clover in monoculture and mixtures produced the highest yields, with significant positive GCA effects (P < 0.01). Lucero white clover, and Copetona and Tango prairie grasses had significant negative GCA effects (P < 0.05). In mixtures, red clover with each of the three grass cultivars and white clover with Tango had significant and outstanding SCA effects (P < 0.01). Grass/grass mixtures and the legume/legume mixture showed non-significant SCA effects, while the grass/legume mixtures generally had higher yield than either component sown as a monoculture (P < 0.01). Given the short-term nature of this study, we must limit our inference to short-term pastures (<2 years). Under these conditions, red clover had the best combination with prairie brome grass.
Acido fítico: aspectos nutricionales e implicaciones analíticas
Martínez Domínguez,Beatriz; Ibá?ez Gómez,Ma Victoria; Rincón León,Francisco;
Archivos Latinoamericanos de Nutrición , 2002,
Abstract: nutritional and analytical implications of phytic acid. this review próvides a current summary of the literature concerning various aspects of phytic acid. these include data relative to its chemical structure and physicochemical properties, its occurrence in numerous cereals and legumes, and its role in plants. in addition, the nutritional significance of phytate with regard to its protein and mineral binding abilities, its health benefits and the methods commonly used for the analysis of phytate are discussed.
Los manuales de Ciencias Sociales y la ense anza de la Historia del Arte en 2o de ESO [Textbooks of Social Sciences and Art History teaching in 2o of Secondary School]
Cosme Jesús Gómez Carrasco,Sebastián Molina Puche,Beatriz Pagán Grau
Ensayos : Revista de la Facultad de Educacion de Albacete , 2012,
Abstract: Resumen: El objetivo de este trabajo es analizar los contenidos de historia del arte en el currículo escolar y en algunos de los principales manuales escolares de 2o curso de ESO. En nuestro sistema educativo el papel de los contenidos de historia del arte tradicionalmente se han ense ado de forma minoritaria y como subsidiarios de la historia. Además éstos suelen presentarse principalmente desde una perspectiva descriptiva. En este trabajo vamos a intentar comprobar hasta qué punto la historia del arte sigue teniendo ese carácter “subsidiario” de la historia en Educación Secundaria, es decir, intentar valorar cuál es el peso real de la historia del arte en el área de Ciencias Sociales, Geografía e Historia en esta etapa educativa y la forma en que los manuales de texto muestran los contenidos. Abstract: The main objective of this paper is to analyze the contents of Art History in the high school curriculum and in some of the major textbooks in the 2o of secondary school. In our educational system the role of content in art history traditionally taught as a minority and subsidiary of the History. Also these contents usually come mainly from a descriptive perspective. In this paper we will try to see how far Art History still has that character "subsidiary" of History in secondary school. We try to assess what the actual weight of the Art History in the area of Social Sciences, Geography and History in secondary school and the way the show textbook content.
Placenta íncreta en el primer trimestre de gestación: a propósito de un caso
Gómez Jiménez,Jorge Mario; Lopera Marín,Beatriz Elena;
Revista Colombiana de Obstetricia y Ginecología , 2003,
Abstract: this is the case of a 34 year old pregnant which history, physical evaluation and histopathology had related to placenta increta in the first trimester, 12th week gestation. the interest of the case, resides on the low frequency occurrence of the adverse event at this gestational age and its catastrophic consequences.
Dolor Abdominal persistente
Valero Serrano,Beatriz; Franquelo Morales,Pablo; Toledo Gómez,Juan Ramón; Fernández Iglesias,Pedro;
Revista Clínica de Medicina de Familia , 2011, DOI: 10.4321/S1699-695X2011000200015
Abstract: abdominal pain is a frequent complain in primary care and emergency departments, and is the most common symptom in gastrointestinal disorders. intussusception occurs when a segment of bowel invaginates into the distal bowel and it is not a common cause of abdominal pain in adults, however, it is the most common cause of intestinal obstruction in infants and children under 5 years. we report a case of a fourteen year old girl with persistent abdominal pain due to intussusception.
Anestesia para timectomía toracoscópica, vídeo asistida: Reporte de 4 casos
Argudín Cordero,Mercedes; Gómez Portier,Beatriz; Hernández Suárez,Blas;
Revista Cubana de Pediatr?-a , 2000,
Abstract: video-assisted thoracoscopic thymectomy in children is a real novelty in cuba to take care of the incidence of myasthenia gravis in the young population. although such method is not wholly complication-free, if we compare it with the classical technique to thymus approach, then the risks are minimal. the present paper provides information on 4 patients of both sexes, adolescents, asa ii and due to undergo major elective surgery (thymectomy). parameters such as heart rate, electrocardiogram, systolic and diastolic arterial pressures, respiratory rate, esophagic temperature, pulse oxymetry and capnometry were measured before, during and after surgery. the results achieved were in line with the reviewed literature so the conclusion was reached that this technique is a better choice for patients with myasthenia gravis because of the advantages it offers such as low invasiveness, minimum complications and shorter stay at hospitals.
Page 1 /361855
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.