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Search Results: 1 - 10 of 403030 matches for " Isaac-Márquez "
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Detection of pathogenic bacteria in skin lesions of patients with chiclero's ulcer: reluctant response to antimonial treatment
Isaac-Márquez, Angélica Patricia;Lezama-Dávila, Claudio Manuel;
Memórias do Instituto Oswaldo Cruz , 2003, DOI: 10.1590/S0074-02762003000800021
Abstract: we investigated the bacterial flora present in skin lesions of patients with chiclero's ulcer from the yucatan peninsula of mexico using conventional culture methods (11 patients), and an immunocolorimetric detection of pathogenic streptococcus pyogenes (15 patients). prevalence of bacteria isolated by culture methods was 90.9% (10/11). we cultured, from chiclero's ulcers (60%), pathogenic bacterial such as staphylococcus aureus (20%), s. pyogenes (1.6%), pseudomonas aeruginosa (1.6%), morganella morganii (1.6%), and opportunist pathogenic bacteria such as klebsiella spp. (20.0%), enterobacter spp. (20%), and enterococcus spp. (20%). we also cultured coagulase-negative staphylococci in 40% (4/10) of the remaining patients. micrococcus spp. and coagulase-negative staphylococci constituted the bacterial genuses more frequently isolated in the normal skin of patients with chiclero's ulcer and healthy individuals used as controls. we also undertook another study to find out the presence of s. pyogenes by an immunocolorimetric assay. this study indicated that 60% (9/15) of the ulcerated lesions, but not normal controls, were contaminated with s. pyogenes. importantly, individuals with purulent secretion and holding concomitant infections with s. pyogenes, s. aureus, p. aeruginosa, m. morganii, and e. durans took longer to heal leishmania (l.) mexicana infections treated with antimonial drugs. our results suggest the need to eliminate bacterial purulent infections, by antibiotic treatment, before starting antimonial administration to patients with chiclero's ulcer.
Educación superior y cultura ambiental en el sureste de México
Sosa, SB;Isaac-Márquez, R;Eastmond, A;Ayala, ME;Arteaga, MA;
Universidad y ciencia , 2010,
Abstract: this study examined the state of environmental teaching at the higher education level through a case study in the autonomous university of campeche. an exploratory study was carried out, combining quantitative and qualitative methods, in order to diagnose the degree of environmental literacy in the students of the autonomous university of campeche and the type of environmental education they receive. results indicate that the students have a low level of environmental literacy and that they lack the knowledge and necessary skills to carry out favourable environmental changes in their life styles. it is notable that the institutional context operates as the factor that inhibits environmental education, as this is not considered essential and therefore there are no spaces, infrastructure and support, that are necessary for its study, teaching and promotion. a radical change in the formation of the teachers is required to improve the type of teaching that is practiced, as it is at present centered in providing information without a deep comprehension of the complexity and interdependence that exist between the natural and socioeconomic systems.
Detection of pathogenic bacteria in skin lesions of patients with chiclero's ulcer: reluctant response to antimonial treatment
Isaac-Márquez Angélica Patricia,Lezama-Dávila Claudio Manuel
Memórias do Instituto Oswaldo Cruz , 2003,
Abstract: We investigated the bacterial flora present in skin lesions of patients with chiclero's ulcer from the Yucatan peninsula of Mexico using conventional culture methods (11 patients), and an immunocolorimetric detection of pathogenic Streptococcus pyogenes (15 patients). Prevalence of bacteria isolated by culture methods was 90.9% (10/11). We cultured, from chiclero's ulcers (60%), pathogenic bacterial such as Staphylococcus aureus (20%), S. pyogenes (1.6%), Pseudomonas aeruginosa (1.6%), Morganella morganii (1.6%), and opportunist pathogenic bacteria such as Klebsiella spp. (20.0%), Enterobacter spp. (20%), and Enterococcus spp. (20%). We also cultured coagulase-negative staphylococci in 40% (4/10) of the remaining patients. Micrococcus spp. and coagulase-negative staphylococci constituted the bacterial genuses more frequently isolated in the normal skin of patients with chiclero's ulcer and healthy individuals used as controls. We also undertook another study to find out the presence of S. pyogenes by an immunocolorimetric assay. This study indicated that 60% (9/15) of the ulcerated lesions, but not normal controls, were contaminated with S. pyogenes. Importantly, individuals with purulent secretion and holding concomitant infections with S. pyogenes, S. aureus, P. aeruginosa, M. morganii, and E. durans took longer to heal Leishmania (L.) mexicana infections treated with antimonial drugs. Our results suggest the need to eliminate bacterial purulent infections, by antibiotic treatment, before starting antimonial administration to patients with chiclero's ulcer.
Programas gubernamentales y respuestas campesinas en el uso del suelo: el caso de la zona oriente de Tabasco, México
Ricardo Isaac-Márquez,Bernardus de Jong,Amarella Eastmond,Susana Ochoa-Gaona
Región y sociedad , 2008,
Abstract: En el presente artículo se examinan las estrategias productivas instrumentadas por los campesinos del oriente de Tabasco, para responder a las reformas estructurales. Al analizar los patrones de cambio de uso del suelo en sus parcelas, de 1988 a 2004, se identificaron dos tipos de sistemas productivos: a) agricultura de autoconsumo y b) ganadería de cría alternada con cultivos básicos. Más que tratar de ser competitivos, las estrategias campesinas buscan minimizar los riesgos para mantener su condición de productores y asegurar la subsistencia de la unidad familiar en el corto plazo. La disyuntiva campesina es continuar con la ganadería, que conlleva costos elevados para el medio ambiente y de la cual parecen condenados a ser excluidos, o incursionar en opciones forestales que pueden ser rentables a futuro. Se concluye que las políticas públicas deben fortalecer los medios de vida de las comunidades, según un enfoque amplio de desarrollo rural
Cultura ambiental en estudiantes de bachillerato: Estudio de caso de la educación ambiental en el nivel medio superior de Campeche
Isaac-Márquez, Ricardo;Salavarría García, Oswaldo Orlando;Eastmond Spencer, Amarella;Ayala Arcipreste, María Esther;Arteaga Aguilar, Marco Antonio;Isaac-Márquez, Angélica Patricia;Sandoval Valladares, Jorge Luis;Manzanero Acevedo, Luis Ariel;
Revista electrónica de investigación educativa , 2011,
Abstract: this paper offers an analysis of the situation presented by environmental education at the high-school level, by means of a case study done in the municipality of campeche. there was performed exploratory research which combined quantitative and qualitative methods to diagnose high-school students' level of environmental culture, as well as the type of environmental education they receive. the results indicate that students have a low level of environmental awareness, and lack the necessary knowledge and skills with which to make environmentally-friendly changes in their lifestyles. although they show an interest in environmental issues, both their institutional context and their teachers' low level of qualification operate as factors that discourage the students. the results allowed us to identify windows of opportunity for environmental education in the light of the students' positive attitudes, their interest in learning sustainable practices, and the importance of the school as a source of information on the environment.
Programas gubernamentales y respuestas campesinas en el uso del suelo: el caso de la zona oriente de Tabasco, México
Isaac-Márquez, Ricardo;de Jong, Bernardus;Eastmond, Amarella;Ochoa-Gaona, Susana;Hernández, Salvador;Sandoval, Jorge L;
Región y sociedad , 2008,
Abstract: peasants from the eastern part of tabasco state, in mexico, instrumented productive strategies in reaction to structural reforms, which are examined in this paper. by analyzing the land-use change patterns recorded from 1988 to 2004, two types of strategies were identified: a) subsistence agriculture and b) livestock husbandry with basic crops. rather than competitiveness, both strategies aim at minimizing risk while maintaining their status as farmers, assuring the minimum supply of goods for short term subsistence of their families. the farm laborers' dilemma is whether to continue with livestock husbandry, which has high environmental costs and from which they seem condemned to be excluded, or to change to forestry options, which may be profitable in the future. we conclude that public policies should be directed towards strengthening rural communities, based on a comprehensive perception of rural development.
Serotypes of Vibrio cholerae Non-O1 Isolated from Water Supplies for Human Consumption in Campeche, México and their Antibiotic Susceptibility Pattern
Isaac-Márquez, Angélica P;Lezama-Dávila, Claudio M;Eslava- Campos, Carlos;Navarro-Oca?a, Armando;Cravioto-Quintana, Alejandro;
Memórias do Instituto Oswaldo Cruz , 1998, DOI: 10.1590/S0074-02761998000100004
Abstract: the presence of vibrio cholerae non-o1 in water supplies for human consumption in the city of campeche and rural locality of bécal was investigated. v. cholerae non-o1 was detected in 5.9% of the samples obtained in deep pools of campeche. studies conducted in bécal and neighbourhood of morelos in campeche indicated that collected samples harbored v. cholerae non-o1 in 31.5% and 8.7% respectively. there was a particular pattern of distribution of v. cholerae non-o1 serotypes among different studied regions. accordingly, v. cholerae non-o1 serotype o14 predominated in the deep pools of campeche and together with v. cholerae non-o1, o155 were preferentially founds in samples taken from intradomiciliary faucets in the neighbourhood of morelos. samples from bécal predominantly presented the serotype o112. 60% and 53.8% of all studied strains of v. cholerae non-o1 proved to be resistant to ampicillin and carbenicillin. 3.1%, 7.7% and 6.2% presented resistant to doxycycline, trimethoprim-sulfamethoxazole and erythromycin respectively. the study showed the necessity of performing a strong epidemiologic surveillance for emergence and distribution of v. cholerae non-o1
Serotypes of Vibrio cholerae Non-O1 Isolated from Water Supplies for Human Consumption in Campeche, México and their Antibiotic Susceptibility Pattern
Isaac-Márquez Angélica P,Lezama-Dávila Claudio M,Eslava- Campos Carlos,Navarro-Oca?a Armando
Memórias do Instituto Oswaldo Cruz , 1998,
Abstract: The presence of Vibrio cholerae non-O1 in water supplies for human consumption in the city of Campeche and rural locality of Bécal was investigated. V. cholerae non-O1 was detected in 5.9% of the samples obtained in deep pools of Campeche. Studies conducted in Bécal and neighbourhood of Morelos in Campeche indicated that collected samples harbored V. cholerae non-O1 in 31.5% and 8.7% respectively. There was a particular pattern of distribution of V. cholerae non-O1 serotypes among different studied regions. Accordingly, V. cholerae non-O1 serotype O14 predominated in the deep pools of Campeche and together with V. cholerae non-O1, O155 were preferentially founds in samples taken from intradomiciliary faucets in the neighbourhood of Morelos. Samples from Bécal predominantly presented the serotype O112. 60% and 53.8% of all studied strains of V. cholerae non-O1 proved to be resistant to ampicillin and carbenicillin. 3.1%, 7.7% and 6.2% presented resistant to doxycycline, trimethoprim-sulfamethoxazole and erythromycin respectively. The study showed the necessity of performing a strong epidemiologic surveillance for emergence and distribution of V. cholerae non-O1
Satisfacción académica con el ABP en estudiantes de licenciatura de la Universidad de Colima, México
Claudia Verónica Márquez González,J. Isaac Uribe Alvarado,Roberto Montes Delgado,Carlos Eduardo Monroy Galindo
Revista Intercontinental de Psicología y Educación , 2011,
Abstract: El propósito de este estudio fue describir la satisfacción académica con el Aprendizaje Basado en Problemas (abp) en 124 estudiantes de las licenciaturas en Medicina y Psicología de la Universidad de Colima, México. Para medir la satisfacción, se desarrolló una escala con ocho ítems: contenidos revisados en tutoría, rol del tutor, rol del estudiante, proceso tutorial, proceso de evaluación, recursos educacionales disponibles, dise o de casos y tiempo para revisión de casos. Los resultados muestran que los alumnos están satisfechos con su rol en la tutoría abp y con los contenidos revisados; mientras que el tiempo asignado a la revisión de los casos y el proceso de evaluación es lo que menos les satisface. En este último, se detectaron diferencias significativas entre los educandos de Medicina y Psicología.
PERCEPCIóN DE LA INVESTIGACIóN CIENTíFICA E INTENCIóN DE ELABORAR TESIS EN ESTUDIANTES DE PSICOLOGíA Y ENFERMERíA
J. Isaac Uribe Alvarado,Claudia Verónica Márquez González,Genoveva Amador Fierros,Ana María Chávez Acevedo
Ense?anza e Investigación en Psicología , 2011,
Abstract: Se presentan resultados de un estudio correlacional que tuvo como propósito conocer la relación entre la percepción de la investigación científica y la intención por titularse con un trabajo de este tipo. Se trabajó con una muestra de 160 estudiantes, hombres y mujeres, de las carreras de Psicología y Enfermería que cursaban el último a o escolar. Los resultados muestran una correlación significativa entre la intención por titularse y el interés por la investigación científica, y asimismo se muestran diferencias entre los estudiantes de cada una de las carreras. Por otra parte, se observa que el principal predictor de la intención por desarrollar un trabajo de investigación y obtener el titulo es el interés por la investigación científica. Se discute respecto a la importancia de establecer en los programas educativos contenidos temáticos relacionados con la investigación y el gusto por la ciencia desde los primeros semestres en cada una de las disciplinas científicas.
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