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Search Results: 1 - 10 of 112420 matches for " Araceli Loredo-Trevi?o "
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Polyurethane as substrate for fungal strains  [PDF]
Araceli Loredo-Trevio, Gilberto García, Abraham Velasco-Téllez, Raúl Rodríguez-Herrera, Cristóbal N. Aguilar
Advances in Bioscience and Biotechnology (ABB) , 2011, DOI: 10.4236/abb.2011.22009
Abstract: Polyurethane is a versatile plastic with several industrial applications in the modern life, but it is considered as a very recalcitrant material. Biodegradation of this plastic has been poorly explored, and most of the studies that have been published focus on bacterial enzymes. In this work, some fungi with the capacity of growing with polyurethane foam as nutrient source were isolated from sands contaminated with this plastic and from DIA/UAdeC collection, testing their ability to grow on polyurethane as sole carbon and nitrogen sources and their enzymatic activities were determined in specific media as well as their invasion capacity on polyurethane agar plates. 22 fungal strains demonstrated their capacity of growing on polyurethane. Among the enzymatic activities evaluate, the most common was the urease activity (95% of the strains).Protease, esterase and laccase activities were present in 86%, 50% and 36% respectively. The great ability of the isolated fungal strains to use polyurethane foam as nutrient opens an important opportunity to study at detail the biodegradation of this plastic, with clear implications in cell biology and environmental technology.
Teen Pregnancy in Durango Mexico: A Cultural Perspective  [PDF]
Rebeca Trevio-Montemayor
Psychology (PSYCH) , 2018, DOI: 10.4236/psych.2018.910136
Abstract: The present research attempts to draw an in-depth understanding of adolescents’ conceptualizations of romantic and gender relationships, which attempted to understand how stereotyped behavior impacts on young girls’ pregnancy decisions. It is a qualitative study that considers own adolescents’ view of marriage and motherhood as an important part of their future life. Qualitative methodology and ethnographic and hermeneutic tools were used to enlighten hidden elements from which statistics and quantitative studies do not show concerning teenage pregnancy, a very important problem in the North West Region of Mexico, particularly in Durango. A comprehensive analysis listening to adolescents themselves can help to reduce adolescent’s fertility and pregnancy rates. Sexual education is officially included in Mexican basic schools; however, it has focused in biological and hygiene issues; the study highlighted the important needs girls and boys have to know about sexual and romantic interaction as a very basic part of sexual education. It was not only about instructing in the use of contraceptive methods but in a real and effective education understanding the cultural context where early pregnancy happens.
PERCEPCIóN DE JóVENES UNIVERSITARIOS RESPECTO A SU SALUD: CONDUCTAS Y CONTEXTO DE RIESGO
Norma Yolanda Rodríguez Soriano,María del Refugio Ríos Salda?a,Laura Ruth Lozano Trevio,María Araceli álvarez Gasca
Ense?anza e Investigación en Psicología , 2009,
Abstract: El presente artículo ofrece datos del Examen Médico Automatizado aplicado a 1,593 alumnos de nuevo ingreso, con una edad promedio de 18 a os, de las carreras de Biología, Cirujano Dentista, Enfermería, Medicina, Optometría y Psicología. Los resultados se analizan en términos de la incidencia de enfermedades crónicas y percepción de mal estado de salud; en cuanto a las conductas y contextos de riesgo, dichos resultados consideran el consumo de alcohol y tabaco, sedentarismo, estrés, depresión y relaciones interpersonales insatisfactorias con familiares y vecinos. Se necesita evaluar detallada y periódicamente tales conductas para elaborar programas multidisciplinarios institucionales que prevengan problemas de salud entre los futuros profesionales del área.
Actualidad de la fenomenología en psicología
Trevio Montemayor,Rebeca;
Diversitas: Perspectivas en Psicología , 2007,
Abstract: phenomenology, as a philosophical project in husserl's view, opened a discussion which led it to be considered an unsuccessful project. nevertheless, in methodological terms phenomenology is still a basic tool for comprehensive phenomenon in psychology. in this sense, the idea about phenomenological perception is an important contribution of mearlau-ponty's work, who takes it from gestaltpsycologie experiments, introducing an essential device to the understanding of the psychological phenomenon complexity, which is understood beyond the mere dual scientific relation known as subject-object. lacan has made an important criticism to this thought, however mearlau-ponty's position has still certain comprehensive possibilities in which we recognize the constitutive relation settle down between conscience and body, subject and world, between the self and the other; relations that make the phenomenology of perception an effort for an analysis of the subject. body-world dialectics makes of the perceptive conscience a media in which the world is frequently recreated and reconstituted. this paper revitalizes the importance of phenomenology for psychology as a decisive topic to avoid the determinism of positive science and for understanding human-being in a wide spread world of possibilities.
Las acciones colectivas en torno al agua potable en dos ciudades medias de México
Ana Helena Trevio
Papeles de población , 1998,
Abstract: El artículo presenta una reflexión derivada de una investigación desarrollada en dos ciudades medias de México (Querétaro y Celaya), en torno al análisis de las relaciones sociales y de las formas de organización que se generan a partir de la demanda de la población por el servicio de agua potable y alcantarillado, en ciudades que, como en este caso, comparten una misma cuenca hidrográfica. Las formas organizadas y el tipo de relaciones sociales construidas forman parte de un campo novedoso sobre el cual se discute el cómo este recurso es pensado y apropiado desde lo institucional y lo social. Todo esto se encuentra enmarcado en el debate teórico sobre movimientos sociales y acciones colectivas, así como en las nuevas categorías sociales que se construyen para explicar los actuales fenómenos urbanos.
Eduardo Liceaga y la participación mexicana en la fundación de la Organización Panamericana de la Salud
Carlos Viesca Trevio
Revista Cubana de Salud Pública , 1998,
Abstract: Se expone la participación mexicana en todas las actividades que dieron como resultado, en la Primera Convención Sanitaria Internacional Panamericana, la creación de la Oficina Sanitaria Internacional que al transcurrir de los a os, se convertiría en la Organización Panamericana de la Salud. Se destaca la labor del doctor Eduardo Liceaga, salubrista eminente, presidente del Consejo Superior de Salubridad de México y vicepresidente del primer consejo directivo de la Oficina Sanitaria Internacional. Se cita entre los antecedentes la integración a la Asociación Americana de Salubridad Pública, corporación de carácter científico que operaba en EE.UU. desde 1872, primero del Dominio del Canadá, después de México y por último de Cuba. Los doctores Liceaga y Carlos J. Finlay presidieron la Asociación Americana de Salubridad Pública. The participation of mexicans in all the ativities that -in the First Pan-American International Sanitary Convention, led to the creation of the International Sanitary Office- which with the lapse of time, would become the Pan-American Organization of Health, is reported. The work of Dr. Eduardo Liceaga, mexican eminent improver of health, president of the Superior Council of Salubrity in Mexico, and vice president of the first management Council of the International Sanitary Office, was emphasized. among the antecedents, the integration to the American Association of Public Salubrity, Scientifical Corporation which was operated en the United States, from 1872, first of the Cadanian Domain, then, of Mexico, and finally of Cuba, is mentioned Doctors Liceaga and Carlos J. Finlay, presided over the American Association of Public Salubrity.
On the Non-Uniform Hyperbolicity of the Kontsevich-Zorich Cocycle for Quadratic Differentials
Rodrigo Trevio
Mathematics , 2010,
Abstract: We prove the non-uniform hyperbolicity of the Kontsevich-Zorich cocycle for a measure supported on abelian differentials which come from non-orientable quadratic differentials through a standard orientating, double cover construction. The proof uses Forni's criterion for non-uniform hyperbolicity of the cocycle for SL(2,R)-invariant measures. We apply these results to the study of deviations in homology of typical leaves of the vertical and horizontal (non-orientable) foliations and deviations of ergodic averages.
On the Ergodicity of Flat Surfaces of Finite Area
Rodrigo Trevio
Mathematics , 2012,
Abstract: We prove some ergodic theorems for flat surfaces of finite area. The first result concerns such surfaces whose Teichmuller orbits are recurrent to a compact subset of $SL(2;R)/SL(S)$, where $SL(S)$ is the Veech group of the surface. In this setting, this means that the translation flow on a flat surface can be renormalized through its Veech group to reveal ergodic properties of the translation flow. This result applies in particular to flat surfaces of infinite genus and finite area. Our second result is an criterion for ergodicity based on the control of deforming metric of a flat surface. Applied to translation flows on compact surfaces, it improves and generalizes a theorem of Cheung and Eskin.
The Burgess inequality and the least k-th power non-residue
Enrique Trevio
Mathematics , 2014,
Abstract: The Burgess inequality is the best upper bound we have for the character sum $S_{\chi}(M,N) = \sum_{M
Obtención de Financiamiento para Pymes Exportadoras de Nuevo León
Trevio, M.,Villalpando, P.,Lozano, D.,Trevio, R.
Innovaciones de Negocios , 2012,
Abstract: El presente documento tiene como finalidad identificar cómo la obtención de financiamiento en la peque a y mediana empresa exportadora (Pyme exportadora) por parte de alguna institución bancaria o por algún apoyo de fondo gubernamental ayuda a incrementar porcentualmente las ventas de los negocios en el estado de Nuevo León. Así mismo, es importante mencionar que el gobierno como institución no solamente cuenta con programas de apoyo en fondos gubernamentales sino también cuenta con asesoría a través de una serie de programas de capacitación e instrucción en varios temas como son exportaciones, franquicias, oportunidades de negocios, entre otros; sin analizar cada tema en particular, la investigación se inclina a conocer si la asesoría que se ha recibido por parte de alguna institución gubernamental ha sido de utilidad con respecto al aumento en las ventas y si la asesoría bancaria le ha ayudado a manejar sus recursos financieros con miras a un crecimiento.
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