1,720,956 research outputs found
Biosensores para el monitoreo no invasivo de glucosa
Get PDFLos biosensores de glucosa de tercera generación, se basan en la transferencia directa de electrones desde la glucosa al electrodo mediante al sitio activo de la enzima, sin etapas intermedias ni uso de mediadores. El monitoreo no invasivo de glucosa implica la no invasión del cuerpo para recolectar fluidos corporales tales como saliva, lágrimas y/o sudor para la detección de glucosa.Fil: Alarcon Segovia, Lilian Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina. Universidad Maria Auxiliadora; ParaguayFil: Rintoul, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Recalde Sckell, Dalila Azucena. Universidad Maria Auxiliadora; ParaguayFil: Wannis Fulchini, Leila Marian. Universidad Maria Auxiliadora; Paragua
UTILIZACIÓN DE PLASMA RICO EN PLAQUETAS EN MEDICINA REGENERATIVA
Get PDFEn el área de la medicina regenerativa, últimamente, la terapia de plasma rico en plaquetas (PRP) ha generado mucha atención siendo aplicada a diferentes patologías sistémicas y localizadas (1). El PRP es un centrifugado de la propia sangre del paciente que proporciona diversos factores de crecimiento y proteínas que pueden estimular al proceso de regeneración celular, lo cual significa un factor importante para su uso clínico generalizado, en diferentes tejidos en donde el suministro de sangre es limitado y ayuda la recuperación y cicatrizació
EFECTOS DE LA DIABETES GESTACIONAL, EN LA MADRE Y EN EL FETO.
Get PDFGestational diabetes, affects the newborn and the mother, is related to low glucose levels in the blood plasma, which can be harmful to the mother and the fetus. Among the effects in the newborn appear: preterm delivery, macrosomia, neuronal alterations due to lack of glucose and oxygen, and in the early childhood period it could appear: learning defects such as dyslexia, dyscalculia, dysgraphia and various other effects. Treatments include diet, exercise, and proper medication. Insulin as a treatment to maintain glucose levels could be effective.La diabetes gestacional, afecta al neonato y a la madre, está relacionada a los niveles altos de glucosa en el plasma sanguíneo, pudiendo ser perjudicial para la madre y el feto. Entre los efectos en el neonato aparecen: parto de pretérmino, macrosomía, alteraciones neuronales por falta de glucosa y oxígeno, y en el periodo de la primera infancia podría aparecer: defectos del aprendizaje como dislexia, discalculia, disgrafia y varios efectos más. Los tratamientos incluyen dieta, ejercicios y medicación adecuada. La insulina como tratamiento para mantener los niveles de glucosa podría ser efectiva
BIOSENSORES PARA EL MONITOREO NO INVASIVO DE GLUCOSA
Get PDFLa Unión Internacional de Química Pura y Aplicada (IUPAC) define a un biosensor como un dispositivo que utiliza reacciones bioquímicas específicas mediadas por enzimas aisladas, inmunosistemas, tejidos, orgánulo o células enteras para la detección de componentes químicos, mediante señales eléctricas, térmicas u ópticas (1). Los biosensores se clasifican según el tipo de elemento de reconocimiento como por ejemplo: enzimas, anticuerpos, ácido nucleico y células o según el método de transducción de señales como por ejemplo: óptica, electroquímica piezoeléctric
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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