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Search Results: 1 - 10 of 216471 matches for " Rubén; Martínez-Graciá "
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EMPLEO DE FóRMULAS INFANTILES ANTIRREGURGITACIóN EN LACTANTES: EFECTO SOBRE LA DISPONIBILIDAD MINERAL
González-Bermúdez,Carlos A; Frontela-Saseta,Carmen; Peso-Echarri,Patricia; López-Nicolás,Rubén; Martínez-Graciá,Carmen;
Revista chilena de nutrición , 2011, DOI: 10.4067/S0717-75182011000400012
Abstract: gastroesophageal reflux (ger) is common in infants during the early months of life, as a result of a weak development of the regulatory mechanisms. nevertheless, ger tends to disappear as infants grow. nowadays, ger has become a common cause ofpediatric consultation in the clinical practice, especially if it is followed by vomits. sometimes, changing baby position while feeding seems to be a solution to reduce symptoms, while other times it is necessary manage the problem according to clinical practice guidelines. in these guidelines, the use of anti-regurgitation infant formulas are included, which has been formulated with thickening agents and/or whey/casein ratio modification. antiregurgitation milk products are available without pediatric prescription in chemists and other authorized establishments. published studies on antiregurgitant infant formulas show some contradictory conclusions about their use. a negative effect on mineral and micronutrient bioavailability has been proposed by some authors, in relation to the presence of thickening agents used as ingredients. different aspects which require more research, related to the use of antiregurgitation infant formulas, have been included in this review with the aim ofproducing more effective and safety products for an especially vulnerable population, where an optimum feeding will lead to an adequate development and good health status in the future.
Omeka : exposicions virtuals i distribució de col.leccions digitals
Alcaraz Martínez, Rubén
BiD : Textos Universitaris de Biblioteconomia i Documentació , 2012, DOI: 10.1344/105.000001828
Abstract: Es presenten les principals característiques del programa Omeka, la finalitat del qual és la de crear exposicions virtuals a partir de col.leccions de documents de qualsevol tipologia. Es descriu el procés d'instal.lació, creació, publicació, consulta i visualització de documents, col.leccions i exposicions i es mostren diferents exemples d'implementacions. La versió analitzada és la 1.4.1, l'última disponible al web del projecte. L'objectiu és mostrar una primera aproximació al programa i destacar-ne les principals funcionalitats.This paper presents the main features of the Omeka program, the aim of which is to create virtual exhibitions from collections of documents of any kind. It describes the installation, creation, publication, consultation and visualization of documents, collections and exhibitions and provides examples of various implementations. The version analysed - 1.4.1 is the latest and is available at the project web site. The aim is to provide an introduction to the programme and to highlight its main functions.
Omeka : exposiciones virtuales y distribución de colecciones digitales
Alcaraz Martínez, Rubén
BiD : Textos Universitaris de Biblioteconomia i Documentació , 2012, DOI: 10.1344/105.000001829
Abstract: Se presentan las principales características del programa Omeka, cuya finalidad es la de crear exposiciones virtuales a partir de colecciones de documentos de cualquier tipología. Se describe el proceso de instalación, creación, publicación, consulta y visualización de documentos, colecciones y exposiciones y se muestran diferentes ejemplos de implementaciones. La versión analizada es la 1.4.1, última disponible en el web del proyecto. El objetivo es mostrar una primera aproximación al programa y destacar sus principales funcionalidades.This paper presents the main features of the Omeka program, the aim of which is to create virtual exhibitions from collections of documents of any kind. It describes the installation, creation, publication, consultation and visualization of documents, collections and exhibitions and provides examples of various implementations. The version analysed - 1.4.1 is the latest and is available at the project web site. The aim is to provide an introduction to the programme and to highlight its main functions.
Book review: VV.AA. La CT o La Cultura de la Transición. Crítica a 35 a os de cultura espa ola, Barcelona, Debolsillo, 2012. Cultura de la Transición, Qué hay de nuevo, viejo?
Rubén Martínez Moreno
Teknokultura : Revista de Cultura Digital y Movimientos Sociales , 2012,
Abstract: Book review: VV.AA. La CT o La Cultura de la Transición. Crítica a 35 a os de cultura espa ola, Barcelona, Debolsillo, 2012. Rese a del libro: VV.AA. La CT o La Cultura de la Transición. Crítica a 35 a os de cultura espa ola, Barcelona, Debolsillo, 2012.
Rethinking Latin America. A Call for a Debate on a Critical, Demonstrative and Cognitive Latin American Concept
Rubén Torres MARTíNEZ
Studii de Stiinta si Cultura , 2011,
Abstract: The author tries to re-conceptualize the terms of Latin America in three views: critical, demonstrative, and cognitive. The author goes through examples of cultural, geographical and historical conceptualizations, to show how and why the concept of Latin America is constantly under construction. From this idea, the author tries to demonstrate that the concept of Latin America is an unfinished analytical tool, which has much still to explore and exploit. The author concludes with an appeal to set aside pre-conceived judgments and assessments that are currently dominated by a concept such as Latin America.
Putting into perspective of the cleavage State-Church in Mexico
Rubén TORRES-MARTíNEZ
Studii de Stiinta si Cultura , 2012,
Abstract: Since the independence of Mexico (1821), two political groups have been competing for getting the control of the country. Throughout the twentieth century, the hegemonic party by using the entire state apparatus managed the system to make impossible to observe the cleavages in the country. We have studied and exploited the concept of cleavage as a tool. This concept allows us to observe where the lines are which divide the society. It has been studied the case of two political parties: the National Action Party (PAN) and the Party of Democratic Revolution (PRD). The constitutional amendments that occurred during Salinas’s administration have faced again the State and the Catholic Church. Indeed, this conflict has become the center of national debate. We can see that the conflict has been institutionalized and has continued until today. Also the conflict reveals a history cleavage back to the time of independence.
Comparación de cinco técnicas de campo para detectar pre ez en ovejas Pelibuey
Rubén Darío Martínez Rojero
Veterinaria México , 1999,
Abstract: El objetivo de este estudio fue comparar la precisión de cinco técnicas de campo para detectar pre ez en ovejas Pelibuey. El estudio se realizó en el Colegio Superior Agropecuario del Estado de Guerrero. Diecinueve ovejas de uno a cuatro partos fueron sincronizadas en estro con implantes reciclados de norgestomet y servidas por monta controlada. Se registró la fecha de servicio y 14 a 21 días después se realizó la verificación del "no retorno al estro" con un carnero vasectomizado. Se hizo ultrasonografía Modo-A a los 30 (oveja sentada) y 60 días después del servicio (oveja en pie). A los 90 días posteriores a la fecha de monta se realizó detección de pre ez por palpación abdominal y por evaluación del desarrollo de la ubre. Se registró la ocurrencia del parto para comparar la precisión de las técnicas evaluadas y los datos se analizaron por pruebas de X2. La exactitud en la detección de pre ez fue mayor (P<0.05) para el "no retorno al estro" (89.4%) y el ultrasonido a los 60 días (73.7%), comparado el ultrasonido a los 30 días (47.3%) y la palpación abdominal (47.3%). La evaluación del tama o de la ubre tuvo una exactitud del 63.1% que no fue diferente (P>0.05) de la precisión para detectar pre ez encontrada en las demás técnicas evaluadas en este estudio. Se concluye que el "no retorno al estro" y la ultrasonografía a los 60 días, fueron las técnicas de campo más exactas para detectar pre ez en ovejas Pelibuey.
Evolutionary game theory and the tower of Babel of cooperation: Altruism, free-riding, parasitism and the structure of the interactions in a world with finite resources
Rubén J. Requejo-Martínez
Quantitative Biology , 2013,
Abstract: The study of the evolution of cooperative behaviours --which provide benefits to others-- and altruism --which provides benefits to others at a cost to oneself-- has been on the core of the evolutionary game theoretical framework since its foundation. The fast development of the theory during the last years has improved our knowledge of the issue, but carried attached a diversification of concepts which affected communication between scientists. Furthermore, the main root of conflict in the struggle for life identified by Darwin, the limited amount of resources present in any ecosystem, which is assumed to keep a constant population size in most game theoretical studies, has only recently been taken into account as explicitly influencing the evolutionary process. This review concerns about both issues, the conceptual diversification during the last years and the new results of the resource dependent models. In extenso: After a historical introduction, a review of the most important concepts is carried out. Then it is shown that pairwise interactions and additive fitness determine prisoner's dilemmas (PDs) or harmony games, that two altruists interacting together may determine a PD, and that the interaction environment of the most cooperative and less selfish individual in any population is always a PD. After that, it is shown that in addition to altruists versus free-riders, the combination of free-riders and parasites determines a fundamentally different PD. Computer simulations are then carried out to show that random exploration of parasitism, free-riding and altruism enables coexistence of the three strategies without the need of reciprocating, punishing or rewarding strategies. To finish, the problem of the limitation of resources is reviewed, showing that...
Estimación de la ingesta y necesidades de enriquecimiento de folatos y ácido fólico en alimentos
Olivares Martínez,Ana Belén; Ros Berruezo,Gaspar; Bernal Cava,Ma José; Martínez Graciá,Carmen; Periago Castón,Ma Jesús;
Archivos Latinoamericanos de Nutrición , 2005,
Abstract: the term "folate" is a generic way to name the different forms derived from folic acid, one of the b vitamins (specifically b9 vitamin). they are essential in the metabolism when they act as cofactors in the transfer reactions of one carbon. however, only plants and microorganisms are able to synthesize them de novo, in such a way that both animals and human beings have to intake them through their diet. folic acid is widely spread in nature, mainly in vegetables, liver ans cereals. however, nowadays, the lack of folates in the diet is one of the most common nutritional deficiencies in the world, and it has serious consequences on human health. there is evidence that even in developed countries folate intake is usually low; and even, is some cases, below optima levels. the authorities in several countries have adapted different norms related to folic acid, fortifying staple food such as dairy products or cereals, mandatory (usa, canadá or chile) or voluntary (most of the european countries).
Las asimetrías de los mercados y la evaluación de proyectos en las multinacionales
Mosqueda Almanza, Rubén M.;Martínez Turrubiates, Armando;
Argumentos (México, D.F.) , 2010,
Abstract: the classic financial evaluation tools cannot be applied to the venture capital projects because the international environment conditions create an economic gap which could be improved by the international corporate. because of that, in this paper we analyze the asymmetry into international market conditions and its relations to the multinational economic returns in order to elaborate an adequate financial evaluation model. in this way we had found the sovereign risk, the international fisher effect and the withholding income tax as the main issues that influence over the global economic results.
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