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Search Results: 1 - 10 of 12253 matches for " Mary Eugenia Cartaya Lopez "
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Assessment of a telemetry monitoring system (Movicorde) developed in Cuba
Martha Mireya Rivero Varona,Eduardo Rivas Estany,Mary Eugenia Cartaya Lopez,Juliette Valles Cruz
Revista Cubana de Cardiología y Cirugía Cardiovascular , 2012,
Abstract: Introduction The Movicorde system was designed in order to help cardiologists and physiotherapists atexercise training sessions,where constant supervision of relevant parameters is required.Objectives To evaluate the use of Movicorde in high-risk cardiac patients, including the presence of arrhythmias, ST segmentabnormalities and target heart rate.Methods A descriptive, cross-sectional study of 80 high-risk patients who attended the gymnasium of the Institute of Cardiology,from July 2009 through April 2011, in a Cardiac Rehabilitation (CR) program.The measurements taken by Movicordewere compared to those taken by the cardiologists and a data base was created for statistical analyses.Results Sixty two (62) patients had premature ventricular complexes (PVC). The high specificity (99.87 %), sensibility (80,33%)and the 83,42% positive predictive value (VPP) of the system to detect PVC, was described. There was total concordancebetween the equipment and the physicians in 57 patients (71,25%) with respect to ST segment depression.This had a very superior observed value to that expected and showed that the results were representative (p<0,005).Patients who had acute or recent Myocardial Infarction or chronic ischemic heart disease had intermediate total exercise-session duration and their target heart rate had a similar value which was lesser with respect to the rest of thepatients.Conclusions The Movicorde system showed high efficiency for the telemetric analyses of exercise training sessions and its use isrecommended in clinical practice.
The Web 2.0 in the systems of recovery of information La web 2.0 en los sistemas de recuperación de información
Mary Eugenia Luna González
Biblios , 2011, DOI: 10.5195/biblios.2011.12
Abstract: A documentary analysis is realized to obtain knowledge on the advance of the new technologies of the information and communication, and the informative explosion and overcrowding in the network consequence of such a advance, which alone is possible to offset by means of the system utilization of recovery of information combined with the advantages offered in the Web 2.0. Se realiza un análisis documental para obtener conocimiento sobre el avance de las nuevas tecnologías de la información y comunicación, y la explosión informativa y sobresaturación en la red consecuencia de tal avance, que solo es posible contrarrestar por medio de la utilización de sistemas de recuperación de información combinados con las ventajas ofrecidas en la web 2.0.
Acta Biológica Colombiana , 2010,
Abstract: the arbuscular mycorrhizal fungi (amf) facilitate the absorption of nutrients to the host plants. these microorganisms therefore, fulfill a fundamental roll in the operation of agroecosytems. the aim of this work was to evaluate the effect between native and commercial arbuscular mycorrhizal fungi and elaeis guineensis seedlings in greenhouse conditions with high p level. plants of three months of the age were put under four treatments: native inoculate (ni), foreign inoculate (fi), mixture (m) and control (ta). it was evaluated total dry weight of the plant, root and aerial part dry weight, height of the plant, relative growth rate (rgr), mycorrhizal colonization and spores number. at 45 and 90 days after the transplant these variable were evaluated. an initial sampling dry mass was taking by to determine rgr. the data were analyzed through the anova or kruskall-wallis according to the behavior of the data, followed of a test of averages of duncan or a modified test of tuckey for nonparametric data. significant differences in the spores number between the treatments ni, fi, m and ta and between ni and m to the 45 days appeared. in the colonization mycorrhizal differences between the treatments fa and ta were observed the 45 days. to the 90 days between all the treatments with respect to the ta. although the p level in the soil was high, also it was it the mycorrhizal colonization at the two evaluated times. through time the treatment ni worked better in the soil edaphic conditions used in this experiment.
Potential to attract drivers out of their cars in dense urban areas
Andres Monzon,Luis Alfredo Vega,Maria Eugenia Lopez-Lambas
European Transport Research Review , 2011, DOI: 10.1007/s12544-011-0054-5
Abstract: The proposed method has demonstrated its validity to determine the potential of transferring trips out of cars to more sustainable modes. Al the same time it is clear that, even in areas with favourable conditions for walking, cycling and PT trips, the potential of transfer is limited because cars fulfil more properly special requirements of some trips and tours.
First-order equivalent to Einstein-Hilbert Lagrangian
Marco Castrillon Lopez,Jaime Munoz Masque,Eugenia Rosado Maria
Mathematics , 2013,
Abstract: A first-order Lagrangian $L^\nabla $ variationally equivalent to the second-order Einstein-Hilbert Lagrangian is introduced. Such a Lagrangian depends on a symmetric linear connection, but the dependence is covariant under diffeomorphisms. The variational problem defined by $L^\nabla $ is proved to be regular and its Hamiltonian formulation is studied, including its covariant Hamiltonian attached to $\nabla $.
Four-dimensional naturally reductive pseudo-Riemannian spaces
Wafaa Batat,Marco Castrillon Lopez,Eugenia Rosado Maria
Mathematics , 2014,
Abstract: The classification of 4-dimensional naturally reductive pseudo-Riemannian spaces is given. This classification comprises symmetric spaces, the product of 3-dimensional naturally reductive spaces with the real line and new families of indecomposable manifolds which are studied at the end of the article. The oscillator group is also analyzed from the point of view of this classification.
Anti-Plasmodium falciparum invasion ligand antibodies in a low malaria transmission region, Loreto, Peru
Villasis Elizabeth,Lopez-Perez Mary,Torres Katherine,Gamboa Dionicia
Malaria Journal , 2012, DOI: 10.1186/1475-2875-11-361
Abstract: Background Erythrocyte invasion by Plasmodium falciparum is a complex process that involves two families; Erythrocyte Binding-Like (EBL) and the Reticulocyte Binding-Like (PfRh) proteins. Antibodies that inhibit merozoite attachment and invasion are believed to be important in mediating naturally acquired immunity and immunity generated by parasite blood stage vaccine candidates. The hypotheses tested in this study were 1) that antibody responses against specific P. falciparum invasion ligands (EBL and PfRh) differ between symptomatic and asymptomatic individuals living in the low-transmission region of the Peruvian Amazon and 2), such antibody responses might have an association, either direct or indirect, with clinical immunity observed in asymptomatically parasitaemic individuals. Methods ELISA was used to assess antibody responses (IgG, IgG1 and IgG3) against recombinant P. falciparum invasion ligands of the EBL (EBA-175, EBA-181, EBA-140) and PfRh families (PfRh1, PfRh2a, PfRh2b, PfRh4 and PfRh5) in 45 individuals infected with P. falciparum from Peruvian Amazon. Individuals were classified as having symptomatic malaria (N=37) or asymptomatic infection (N=8). Results Antibody responses against both EBL and PfRh family proteins were significantly higher in asymptomatic compared to symptomatic individuals, demonstrating an association with clinical immunity. Significant differences in the total IgG responses were observed with EBA-175, EBA-181, PfRh2b, and MSP119 (as a control). IgG1 responses against EBA-181, PfRh2a and PfRh2b were significantly higher in the asymptomatic individuals. Total IgG antibody responses against PfRh1, PfRh2a, PfRh2b, PfRh5, EBA-175, EBA-181 and MSP119 proteins were negatively correlated with level of parasitaemia. IgG1 responses against EBA-181, PfRh2a and PfRh2b and IgG3 response for PfRh2a were also negatively correlated with parasitaemia. Conclusions These data suggest that falciparum malaria patients who develop clinical immunity (asymptomatic parasitaemia) in a low transmission setting such as the Peruvian Amazon have antibody responses to defined P. falciparum invasion ligand proteins higher than those found in symptomatic (non-immune) patients. While these findings will have to be confirmed by larger studies, these results are consistent with a potential role for one or more of these invasion ligands as a component of an anti-P. falciparum vaccine in low-transmission malaria-endemic regions.
Caracterización geomecánica de macizos rocosos en obras subterráneas de la región oriental del país (resumen de tesis)
Maday Cartaya-Pire
Minería y Geología , 2006,
Abstract: En este trabajo se establecen las principales características geomecánicas de los macizos rocosos estudiados y se proponen los modelos geomecánicos más representativos para cada caso. La metodología de investigación desarrollada constituye un aporte científico y brinda elementos novedosos, además es aplicable a cualquier tipo de macizo tanto en obras subterráneas como de superficie. Los resultados del estudio del agrietamiento de los macizos rocosos muestran que un gran porcentaje de ellos se presentan agrietados, lo que se relaciona a las formas preponderantes en que se manifiesta la pérdida de su estabilidad y el mecanismo de actuación de la presión. Como resultado de la evaluación de la estabilidad de los macizos rocosos según su calidad y estabilidad se obtiene que predominan los macizos de calidad regular, aunque en diferentes sectores y obras se presentan macizos en mal estado, lo que es condicionado además de los problemas estructurales, por el deterioro que ellos han sufrido por efectos del agua, la erosión y la atmósfera subterránea. Se obtienen un grupo de criterios geomecánicos – estructurales que pueden ser aplicados para el dise o de excavaciones y obras subterráneas, fundamentando su empleo.
Organocatalytic Enantioselective Henry Reactions
Yolanda Alvarez-Casao,Eugenia Marques-Lopez,Raquel P. Herrera
Symmetry , 2011, DOI: 10.3390/sym3020220
Abstract: A large number of interesting organocatalytic enantioselective protocols have been explored and successfully applied in the last decade. Among them, the Henry (nitroaldol) reaction represents a powerful carbon-carbon bond-forming procedure for the preparation of valuable synthetic intermediates, such as enantioenriched nitro alcohols, which can be further transformed in a number of important nitrogen and oxygen-containing compounds. This area of research is still in expansion and a more complex version of this useful process has recently emerged, the domino Michael/Henry protocol, affording highly functionalized cycles with multiple stereogenic centers.
Effect of user fee on patient’s welfare and efficiency in a two tier health care market  [PDF]
Eugenia Amporfu
Health (Health) , 2010, DOI: 10.4236/health.2010.29164
Abstract: This is a theoretical paper examining the effect of user fee on patients’ welfare and social welfare under three forms of provider reimbursements: full cost, prospective payment and cost sharing. The paper extends Rickman and McGuire (1999) by introducing user fee to the public sector and maintaining the assumption that providers can work in both the private and public health sectors. Contrary to previous studies, this study shows that efficiency is possible under the full cost reimbursement. The paper also shows the conditions under which efficiency is possible under each reimbursement scheme. Patient’s welfare can improve with the introduction of user fee when services in the public and private sector are complementary.
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