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Search Results: 1 - 10 of 222095 matches for " Bazán-Ramírez "
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Desarrollo funcional de competencias de producción de textos en alumnos con bajo desempe?o en el último a?o de primaria
Bazán-Ramírez, Aldo;Urbina-Pérez, Diana;Domínguez-Márquez, Lorena;Mansillas-Cervantes, María I.;Gómez-Manjarrez, Itzel;
Revista mexicana de análisis de la conducta , 2011, DOI: 10.5514/rmac.v37.i1.24741
Abstract: preliminary results of a study with pre - post evaluation with three comparison groups are shown. this study has the purpose of testing three types of strategies for training in text production, which are morphologically, hierarchically and functionally different. this in order to promote three different types of functional relations: intrasituational, extrasituational and transituational. the intervention program was implemented as a summer workshop directed to 14 children of sixth grade in a semi urban area in the state of morelos, mexico, having low levels of performance in text production activities. the text production skills were assessed with four sets of two activities each one: writing regulations, writing stories, develop descriptive paragraphs and writing messages with use of synonymous. to compare the performance assessments before and after, and between groups, were descriptive analysis of group averages, using a valuation range between 0 and 4 for each activity. also tested a structural regression model including as predictor variable to the experimental situation (group) and as variables to predict, the four skills evaluated. the results showed that the children of the transituacional group remarkably improved their competitions in text production from pre and post evaluations, furthermore, the structural regression model showed that in the post test, the experimental condition had a significant effect on the differential performance in three of the four skills assessed.
Shigelosis (disentería bacilar)
Sergio León-Ramírez
Salud en Tabasco , 2002,
Abstract: La shigelosis, también conocida como disentería bacilar, es endémica en países en desarrollo con pobres medidas sanitarias. Es causada por bacterias del género Shigella y los síntomas incluyen diarrea, dolor abdominal, vómito y fiebre. Ha sido demostrado que sólo de 10 a 100 organismos causan la enfermedad. La prevalencia de estas infecciones disminuye significativamente después de los 5 a os de vida.
Infecciones del Sitio Quirúrgico
Salvador Chacón-Ramírez
Medicina Hospitalaria , 2013,
Abstract: Entre las complicaciones más frecuentes después de una cirugía figuran las infecciones del sitio quirúrgico. Las consecuencias directas de estas infecciones son de una gran relevancia, ya que se asocian a un aumento en los gastos hospitalarios y la morbi-mortalidad. La prevención y el tratamiento de las infecciones del sitio quirúrgico es un tema de enorme interés desde el punto vista clínico, epidemiológico y económico en todos los centros hospitalarios. El propósito de esta revisión es dar recomendaciones de prevención de las infecciones del sitio quirúrgico.
Ustilago maydis, a Delicacy of the Aztec Cuisine and a Model for Research  [PDF]
Claudia G. León-Ramírez, José Alejandro Sánchez-Arreguín, José Ruiz-Herrera
Natural Resources (NR) , 2014, DOI: 10.4236/nr.2014.56024
Abstract:

Ustilago maydis is the causal agent of the disease known as corn smut or Huitlacohe; their natural hosts are maize (Zea mays L.) and its putative ancestor teocintle (Zea mays ssp. parviglumis and ssp. mexicana). In México there is an evidence of its use as human food since pre-hispanic times. Huitlacoche is a typical Mexican food with interesting nutritional properties and distinctive flavor. Its use in cuisine is considered as a culinary delicacy in Mexico and several parts of the world and the current consumption is increasing markedly, mainly due to its exclusive flavor different from any other known food. Huitlacoche contains proteins, carbohydrates, fats, minerals and vitamins that contribute to its nutritional value, also it has been reported that it contains proteins with balanced levels of essential amino acids, something which does not occur in corn having a deficiency mostly in lysine. The fungus also contains compounds with antioxidant properties, consequently it can be included in what are now known as nutraceutical foods. Besides its use in the food, this fungus has been used in different kinds of basic investigation, such as DNA recombination, signaling, cell biology, biotrophic plant-pathogen interactions and others. Its characteristics of dimorphism, and the detailed knowledge we have on its pathogenic development, that we describe in detail, make it an ideal subject for the analysis of fungal differentiation, and for the knowledge of the behavior of the highly aggressive plant pathogens that are members of its taxonomic group, the Ustilaginales. In the present communication we make a thorough review of the nutritional characteristics of U. maydis, its life cycle, and the molecular bases of its differentiation, morpohogenesis

THE ROLE OF HORMONES ON Toxoplasma gondii INFECTION: A SYSTEMATIC REVIEW
María D. Galván-Ramírez
Frontiers in Microbiology , 2014, DOI: 10.3389/fmicb.2014.00503
Abstract: Background: Toxoplasma gondii is the causal agent of toxoplasmosis in which one third of the world’s population has been infected. In pregnant women, it may cause abortion and severe damage to the fetal central nervous system. During pregnancy, the prevalence of toxoplasmosis increases throughout the second and third quarter of gestation, simultaneously progesterone and 17β-estradiol also increase. Thus, it has been suggested that these hormones can aggravate or reduce parasite reproduction. The aim of this study was reviewing the relationship between hormones and infection caused by T. gondii in several experimental animal models and humans, focused mainly on: a) congenital transmission, b) parasite reproduction, c) strain virulence, d) levels of hormone in host induced by T. gondii infection and e) participation of hormone receptors in Toxoplasma gondii infection. Are the hormones specific modulators of T. gondii infection? A systematic review methodology was used to consult several databases (Pub Med, Lilacs, Medline, Science direct, Scielo, Ebsco, Sprinker, Wiley and Google Scholar) dated from September, 2013 to March, 2014. Results: 30 studies were included; eight studies in humans and 22 in animals and cell cultures. In the human studies, the most studied hormones were testosterone, progesterone, prolactin and 17-? estradiol. Type I (RH and BK) and Type II (Prugniaud, SC, ME49,T45, P78 and T38) were the most frequent experimental strains. Conclusions: Thirty-five years have passed since the first studies regarding Toxoplasma gondii infection and its relationship with hormones. This systematic review suggests that hormones modulate Toxoplasma gondii infection in different animal models. However, given that data were not comparable, further studies are required to determine the mechanism of hormone action in the Toxoplasma gondii infectious process.
Gestión de la comunicación estratégica en los sectores empresarial, de desarrollo y público: Estudio comparativo
Preciado-Hoyos,ángela; Guzmán-Ramírez,Haydée;
Palabra Clave , 2012,
Abstract: the results of a study comparing the use of strategic communication in 53 colombian organizations in business, developmental and public sectors are presented in this article. the first part looks at the theoretical proposals of several authors on the contributions of this model in three environments. the second section examines the methodology and results of the study, which was intended to confirm the hypothesis that it is possible to take advantage of this model in different organizations, among other reasons because they all depend on their environment to gain legitimacy and to endure over time. the article ends with a series of conclusions and reflections concerning future research on this topic.
Gestión de la comunicación estratégica en los sectores empresarial, de desarrollo y público. Estudio comparativo
ángela Preciado-Hoyos,Haydée Guzmán-Ramírez
Palabra Clave , 2012,
Abstract: En este artículo se presentan los resultados de una investigación en la que se compara el uso que se hace de la comunicación estratégica en 53 organizaciones colombianas de los sectores empresarial, de desarrollo y público. En la primera parte se examinan propuestas teóricas de varios autores sobre los aportes que hace este modelo en los tres ámbitos. En la segunda se exponen la metodología y los resultados de la investigación aplicada, donde se busca confirmar la hipótesis según la cual es posible aprovechar este modelo en diferentes organizaciones, entre otras razones, porque todas ellas dependen de su entorno para ganar legitimidad y perdurar en el tiempo. El artículo finaliza con una serie de conclusiones y reflexiones de cara a la investigación futura sobre esta temática.
La escritura de un cuento y el cumplimiento de las cla usulas de un pacto comunicativo (Writing a Story and Complying with the Legal Terms of a Communicative Pact) (L'e criture d'un compte et l'accomplissement des clauses d'un pacte communicatif) (A escrita de um conto e o cumprimento das cla usulas de um pacto comunicativo)
Graciela Uribe-álvarez,Carlos Alberto Castrillón-Ramírez,Zahyra Camargo-Martínez
Magis International Journal of Research in Education , 2010,
Abstract: ResumenEste arti culo resume uno de los resultados de la inves- tigacio n Ana lisis de una muestra representativa de los relatos presentados al Concurso Nacional de Cuento Gabriel Garci a Ma rquez (grupo de investigacio n DiLe- Ma, Universidad del Quindi o, 2008). Esta reflexio n gira en torno a las implicaciones teo ricas y metodolo gicas del pacto comunicativo que supone la escritura de un cuento en el marco de un concurso dirigido a los es- tudiantes colombianos. En ese contexto, se describen las fortalezas de los estudiantes en te rminos del cum- plimiento de las condiciones iniciales de la consigna, para luego analizar las debilidades ma s recurrentes en la comprensio n de la escritura como pra ctica socio- discursiva.AbstractThis article summarizes the results of the research project Analysis of a representa- tive sample of the stories submitted to the National Short Story Competition Gabriel Garci a Ma rquez (DiLeMa re- search group, Quindi o University, 2008). This discussion focuses on the theoreti- cal and methodological implications of the communicative pact involving writ- ing a story in the context of a compe- tition aimed at Colombian students. In this context, it describes the strengths of students in terms of compliance with the initial conditions of the slogan to later analyze the recurring weaknesses in the understanding of writing as a social dis- course practice.Re sume Cet article pre sente un re sume des re sul- tats de la recherche Analyse d'un e chan- tillon repre sentatif des re cits pre sente s au Concours National de Compte enfantin Gabriel Garci a Ma rquez (groupe de re- cherche DiLeMa, Universite de Quindi o, 2008). Cette re flexion s'organise autour des implications the oriques et me thodo- logies du pacte communicatif que l'e cri- ture d'un comte pre suppose dans le ca- dre d'un concours adresse auz e tudiants colombiens. Dans ce contexte, on de crit les points forts des e tudiants en ce qui concerne l'accomplissement des condi- tions initiales de la consigne, afin d'analy- ser ensuite les faiblesses les plus commu- nes dans la compre hension de l'e criture comme une pratique socio-discursive.ResumoEste artigo resume um dos resultados da pesquisa Ana lise de uma mostra re- presentativa dos relatos apresentados ao Concurso Nacional de Contos Gabriel Garci a Ma rquez (grupo de investiga- c a o DiLeMa, Universidade do Quindi o, 2008). Esta reflexa o gira em torno das implicac o es teo ricas e metodolo gi- cas do pacto comunicativo que supo e a escrita de um conto no contexto de um concurso dirigido aos estudantes colombian
PRIMER REGISTRO DE UN CASO DE MALFORMACIONES EN LITHOBATES NEOVOLCANICUS (HILLIS & FROST 1985) (ANURA: RANIDAE)
J. L. Barragán-Ramírez,J. L. Navarrete-Heredia
Acta zoológica mexicana , 2011,
Abstract: On September 9th, 2010, we found an individual of Lithobates neovolcanicus in a pond near to a disturbed pine forest from Mezcala de la Asunción, Poncitlán, Jalisco. The specimen presented two different deformities in its left forelimb and right hindlimb, polymelia and ectromelia, respectively. This is the first record of limb malformations in this endemic Mexican species.
Estudio florístico de Ficus (Moraceae) en el estado de Guerrero, México
Durán-Ramírez, Carlos Alberto;Fonseca-Juárez, Rosa María;Ibarra-Manríquez, Guillermo;
Revista mexicana de biodiversidad , 2010,
Abstract: based on herbarium specimens and on field explorations, 14 native species of ficus (moraceae) were recognized for guerrero, mexico. four species are included in subgenus pharmacosycea (ficus insipida, f. lapathifolia, f. maxima and f. yoponensis) and 9 in subgenus urostigma (f. citrifolia, f. cotinifolia, f. crocata, f. membranacea, f. obtusifolia, f. pertusa, f. petiolaris, f. pringlei and f. velutina), including a possible record of f. aurea. a key, descriptions, distribution maps, and phenology data of species are provided, and 6 of them are ilustrated. riparian forest and tropical deciduous forest were the vegetation communities with the highest number of species (8). ficus lapathifolia was restricted to cloud forest whereas f. pringlei shows the same condition in the tropical deciduous forest. the municipalities of chilpancingo de los bravo and atoyac de alvarez were the most diverse with 11 and 9 species, respectively. ficus crocata, f. lapathifolia, f. membranacea, f. pringlei and f. yoponensis are recorded for the first time for the study area.
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