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Search Results: 1 - 10 of 1520 matches for " Lissette Agüero Luztonó "
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Polymeric Nanohydrogels of Poly(N-Isopropylacrylamide) Combined with Others Functionalized Monomers: Synthesis and Characterization  [PDF]
Lissette Agüero Luztonó, Yuneivy Cepero Donates, Luis Guillermo Guerrero Ramirez, Addys González Palomo, Dionisio Zaldivar Silva, Issa Katime
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2014, DOI: 10.4236/jbnb.2014.51005
Abstract:

Nanohydrogels from inverse microemulsion (w/o) polymerization, at 25°C, of N-isopropylacrylamide (NIPA) and functionalized monomers are described. The functionalized monomers were: N-(pyridine-4-ylmethyl) acrylamide (NP4MAM) and tert-butyl 2-acrylamidoethyl carbamate (2AAECM). The polymeric nanohydrogel obtained was characterized by attenuated total reflectance Fourier-transformed infrared spectroscopy (ATR-FTIR) and proton nuclear magnetic resonance spectrometry (1HNMR), while their morphology and particle size was assessed by scanning electron microscopy (SEM) and dynamic light scattering. Their thermal properties were studied by Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA). As a preliminary measure of biocompatibility, in vitro evaluations of the nanohydrogels were carried out by cellular toxicity (colon carcinoma cells, CT

New Family of Functionalized Monomers Based on Amines: A Novel Synthesis that Exploits the Nucleophilic Substitution Reaction  [PDF]
Lissette Agüero, Luis G. Guerrero-Ramírez, Issa Katime
Materials Sciences and Applications (MSA) , 2010, DOI: 10.4236/msa.2010.13018
Abstract: Chemistry modifications are usually performed to introduce specific group that can increase properties and functionality of materials. In this study, we present the synthesis of six new functionalized monomers prepared by nucleophilic substitution reactions. Reaction of aliphatic and aromatic amines with acryloyl chloride at –20ºC, in presence of triethylamine allowed the synthesis of the corresponding amides. Proton nuclear magnetic resonance (1H NMR) spectroscopy, Fourier-transform infrared (FTIR) spectroscopy and ultraviolet- visible (UV-Vis) measurements confirmed the success of the synthesis with a yield over 90%. These compounds emerged as potentially attractive monomers since they can be used to obtain stimuli-sensitive polymeric materials, due to the presence of amide and pyridine groups.
Una propuesta educativa para atender la diversidad en el contexto de aula
Rosario Agüero Agüero
Revista Electrónica Educare , 2007,
Abstract: Resumen. En la actualidad, los centros educativos tienen el gran reto de brindar a sus estudiantes una educación de calidad y principalmente una educación para todos. El artículo tiene la finalidad de promover el respeto por las diferencias individuales y el de atender la diversidad en los contextos escolares. El proceso diagnóstico realizado en la “Escuela Mixta San Juan” determinó que las y los estudiantes muestran actitudes de rechazo e irrespeto hacia las diferencias individuales vistas desde cualquier aspecto. Se consultaron autores principalmente a Meléndez (2002), Parcerisa (2000), Olivé (1999) y Aguilar (2000), quienes brindan algunos lineamientos y consideraciones a utilizar en un centro educativo que busque atender la diversidad estudiantil. Los mismos autores coinciden en que es necesario un cambio de actitud y una serie de reformas en los diferentes ámbitos sociales, para que el proceso de atención a la diversidad se dé en forma idónea e integral. Como respuesta a dicha situación, se plantea una propuesta educativa para atender la diversidad en el contexto de aula, por medio de la aplicación de una serie de talleres, que utilizan actividades didácticas participativas, y favorecen el trabajo cooperativo y la construcción propia y colectiva del conocimiento. La propuesta responde a un enfoque socio-constructivista e inclusivo pues, intenta adaptarse a las demandas de las y los estudiantes y del contexto. Se abordarán los más relevantes ámbitos y aspectos que contempla la diversidad, tomando en cuenta aspectos endógenos y exógenos del individuo. Se espera con esta propuesta que las y los estudiantes manifiestan actitudes de respeto hacia la diversidad, respondan a sus necesidades educativas, las de sus compa eros y compa eras y finalmente, que posean una actitud abierta, flexible, crítica hacia sí mismo y su entorno. Por lo tanto, la formación de las futuras generaciones debe contemplar esta serie de habilidades y destrezas, para que visualicen este mundo como una ventana abierta a la superación individual y colectiva. . At the present time, schools face a big challenge: providing their students an education of quality and an education for everyone, in other words, an education thought for diversity within the classroom. The goal of this project is to improve the respect for the students` individual differences and make sure that diversity could be applied in to the school context. Based in a diagnostic process developed at the “Escuela Mixta San Juan”, it was found that most students show rejection and disrespect at the individual differences
Aproximación al asentamiento humano temprano en los oasis de San Pedro de Atacama
Agüero P.,Carolina;
Estudios atacame?os , 2005, DOI: 10.4067/S0718-10432005000200003
Abstract: we give the results of an archaeological survey of the oases of san pedro and the vilama basin. this initial approach to early human settlement in the locality aims to update and give contents to the chronological and cultural sequence of the local formative period. our final objective is to explain the nature, reasons and expressions of the said process within a thus enhanced historical and cultural framework. these results are discussed in connection to previous proposals, suggesting the existence of a particular settlement system for the oasis area
Sociedades indígenas, racismo y discriminación
Agüero, Oscar Alfredo;
Horizontes Antropológicos , 2002, DOI: 10.1590/S0104-71832002000200011
Abstract: this article examines the issue of racism and discrimination as impetrated by national latin-american states toward indigenous societies. the starting point is a theoretical discussion regarding the concepts of race and globalization. the conclusion contends that the indigenous project is opposed to the dominant national project, once the indigenous project proposes a new form of multi ethnical and multi national politics.
Gobierno Corporativo: una Aproximación al Estado del Debate
Agüero,Juan Omar;
Visi?3n de futuro , 2009,
Abstract: the intention of this paper is to present an approach to the state of debate on which, in literature and, enterprise practice is known as corporative government. four questions are approached: a) which are the antecedents of corporative government as a phenomenon? b) which are the applied models of corporative government in diverse countries?, c) which are the internal and external mechanisms by means of which the corporations are managed and controlled? and d) which are the principal axes, of the present debate on corporative government? in relation to these matters, in the first place a revision is made of the antecedents of the problem of the separation between property and administration, from adam smith to the formulation of which today is known as corporative government. secondly, the models of corporative government applied by the united states, great britain, germany and japan are analyzed. thirdly, the corporative mechanisms, the corporative market mechanisms of market and regulatory are used for the direction and control of the corporations and, finally, some important matters are examined that integrate the present debate on the corporative government.
Michel Foucault y la Gubernamentalidad Financiera: Reflexiones sobre la Crisis Financiera Internacional
Agüero,Juan Omar;
Visi?3n de futuro , 2010,
Abstract: in this paper i present a governability or power technology form what i call financial governability that differs from the german ordoliberalism and the north american anacor-liberalism, analyzed by michel foucault. in which context does this form emerge from financial rationality?, how does it emerge and develop itself?, what meanings has it got for biopolítics and governability? and what implications happen from this transformation process of the human work in financial capital?, these are some of the matters that are discussed in this paper. as from the concepts of biopolítics and governability, i treat the theories of the policy of society and human capital, as foundations of the german ordoliberalism and the north american anarco-liberalism, respectively, later discussing the governability form which i call financial governability, as power technology differentiated from those.
Pase de visita en la comunidad
Alcaraz Agüero,Maritza;
MEDISAN , 2011,
Abstract: the community visiting pass is the daily observation made by health workers to the persons hospitalized in polyclinics (or hospitals) in order to assess their health condition or clinical pattern progression so as to carry out the necessary instructions for their rehabilitation. it has become the basic-assisting-teaching-organizational method of medical specialties. in addition, it allows the gathering of all those persons who have to do with the treatment and the diagnosis around the patient (i.e. working basic group); thus, values such as humanism, ethics, moral, responsibility, and solidarity are confirmed through this mechanism. as a result, it constitutes a novel method to organize the teaching process in primary health care.
EL ACUERDO DE LIBRE COMERCIO CHILE - ESTADOS UNIDOS
Agüero,Felipe;
Colombia Internacional , 2005,
Abstract: this document reconstructs the process that culminated in the signing of the free trade agreement between chile and the united states. it provides a historical and political context within which constants and ruptures in the chilean political economy are identified. in particular, the effects of the democratic transition for the economic opening process initiated by chile several decades ago are highlighted. the author concludes that the fta is the result of an extended process of economic opening in chile, on the one hand, along with chile?s international reinsertion as a democratic nation.
Tradición jurídica y derecho local en época constitucional: El "Reglamento para la Administración de justicia y policía en la campa?a" de Córdoba, 1856
Agüero,Alejandro;
Revista de historia del derecho , 2011,
Abstract: después de la sanción de la constitución nacional en 1853 las provincias tuvieron que adecuar sus ordenamientos internos al nuevo marco jurídico establecido por la carta magna. en córdoba se sancionó una constitución provincial en 1855 que venía a reemplazar el reglamento provisorio de 1821. un a?o después, en 1856, la legislatura de córdoba aprobó un nuevo reglamento para la administración de justicia y policía en la campa?a, reformando así el antiguo reglamento que regía desde 1823. a través del análisis de este texto, procuramos mostrar los cambios que pueden vincularse al nuevo orden constitucional y los elementos de persistencia de la tradición jurídica local que subyacen a su contenido. a través del análisis de este producto jurídico local, procuramos comprender la lectura que del nuevo orden constitucional hacía la dirigencia provincial de la segunda mitad del siglo xix.
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