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Search Results: 1 - 10 of 59621 matches for " Jaramillo Arango Carlos Julio "
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Mannheimiosis bovina: etiología, prevención y control
Jaramillo-Arango, Carlos Julio;Trigo Tavera, Francisco J.;Suárez-Güemes, Francisco;
Veterinaria México , 2009,
Abstract: mannheimia haemolytica (mh) is the most pathogenic bacteria associated with bovine pneumonic pasteurellosis (mannheimiosis); furthermore, it is the most important economic loss disease in beef cattle, and the second one after gastrointestinal diseases mainly in less than a year old dairy heifers. it is a common and important opportunistic agent in bovine nasopharynx. stress immunosuppression or the infection caused by respiratory viruses or mycoplasma spp, lead to its establishment and multiplication in lung tissue. a1 and a6 are the most frequent serotypes in pneumonic injuries, and a1 and a2 in the nasopharynx of healthy bovine. among the mh virulence factors, leukotoxin is the most important one; its primarily toxic effect is primarily against leukocytes in ruminants. a better understanding of the epidemiology and the importance of mh species requires new identification criteria that include molecular techniques, as well as more sensitive procedures regarding biochemical and immunological isolation and identification. antimicrobial efficacy, as prophylactic or therapeutical agents, has been very variable due to diagnosis inaccuracies and to the increase of multi-resistant strains. there is a varied range of bacterins that have been used over the last decades; the efficacy of many of them has been questioned as they only protect partially and some of them might even increase the morbility. vaccines with a supernatant culture containing leukotoxin and other soluble antigens, or isolated bacterial extracts or combined with bacterins, have been recently developed showing satisfactory results. efficient prevention and control of bovine mannheimiosis should be supported by a reliable diagnosis, use of vaccines and efficient therapeutic measurements, together with good management practices.
Mannheimiosis bovina: etiología, prevención y control
Carlos Julio Jaramillo-Arango,Francisco J. Trigo Tavera,Francisco Suárez-Güemes
Veterinaria México , 2009,
Abstract: Mannheimia haemolytica (Mh) es la bacteria más patógena y más comúnmente asociada con la pasteurelosis neumónica (mann-heimiosis) bovina, la enfermedad económicamente más importante en bovinos productores de carne, y la segunda, después de las enfermedades grastrointestinales, en becerras lecheras, principalmente menores de un a o. Es un habitante normal y un importante agente oportunista de la nasofaringe de bovinos; la inmunosupresión por estrés o la infección por virus respiratorios o por Mycoplasma spp, propician su establecimiento y multiplicación en el tejido pulmonar. El A1 y el A6 son los serotipos más frecuentes en lesiones neumónicas, y el A1 y A2 en nasofaringe de bovinos sanos. Entre los factores de virulencia de Mh, la leucotoxina es el más importante, cuyo efecto tóxico primario es en contra de los leucocitos, particularmente de rumiantes. Para comprender mejor la epidemiología y la importancia de las especies de Mh, se requieren nuevos criterios para su identificación, que incluyan técnicas moleculares y procedimientos más sensibles de aislamiento e identificación bioquímica e inmunológica. La eficacia de los antimicrobianos, como profilácticos o terapéuticos, ha sido muy variable debido a inconsistencias en el diagnóstico y al incremento en la frecuencia de cepas multirresitentes. Existe una amplia gama de bacterinas empleadas durante décadas; sin embargo, la eficacia de muchas de ellas ha sido cuestionada, pues sólo protegen parcialmente, incluso algunas pueden incrementar la morbilidad. Recientemente se han desarrollado vacunas con sobrenadante de cultivo que contienen leucotoxina y otros antígenos solubles, o extractos bacterianos solos o combinados con bacterinas, con resultados muy satisfactorios. La prevención y el control eficaz de la mannheimiosis bovina deben sustentarse en un diagnóstico confiable, vacunas y medidas terapéuticas eficaces, y buenas prácticas de manejo.
Identificación y tipificación de biotipos y serotipos de Yersinia enterocolitica
Elizalde Casta?eda,Paulino; Díaz? Aparicio,Efrén; Hernández? Andrade,Laura; Jaramillo Arango,Carlos Julio;
Revista de Saúde Pública , 2001, DOI: 10.1590/S0034-89102001000400008
Abstract: objective: to assess the presence of yersinia enterocolitica in otherwise healthy pigs slaughtered for human consumption. methods: one hundred pharyngeal tonsils were sampled in a slaughterhouse in the state of mexico. the minimum sample size (n=100) was calculated based on a preliminary sample of 20 cases, which had 20% positive cases. the collected tonsil samples were inoculated in rappaport broth, and salmonella-shigella and mcconkey media. the biotyping identification process was based on biochemical and serological tests using o:3, o:8 and o:9 antisera. results: twenty-two isolates were obtained. most were biotype 1 (8 cases of o:3 and 8 cases of o:9), but 6 cases could not be serotyped. none of the isolates were of o:8 group. conclusions: this was the first time that y. enterocolitica serotypes were isolated from pig tonsils in mexico. its importance rely on the fact that the isolated serotypes are the most commonly found in public health problems.
Identificación y tipificación de biotipos y serotipos de Yersinia enterocolitica
Elizalde Casta?eda Paulino,Díaz? Aparicio Efrén,Hernández? Andrade Laura,Jaramillo Arango Carlos Julio
Revista de Saúde Pública , 2001,
Abstract: OBJETIVO: Conocer la existencia de Yersinia enterocolitica en suínos visiblemente sanos y sacrificados para el consumo humano. MéTODOS: Fueron estudiadas 100 muestras de tejido linfático obtenidas en el momento del sacrifício, en un matadero del Estado de México. Fueron realizados muestreos pilotos de 20 casos, de los cuales 20% fueron positivos, permitiendo obtener una muestra estudiada (n=100). Las muestras colectadas de tejido linfático fueron acondicionadas para el aislamiento de Yersinia enterocolitica en caldo de Rappaport y en medio de cultivo de Salmonella-Shigella y MacConkey. Las identificaciones fueron efectuadas por medio de pruebas bioquímicas y serológicas, utilizándose en el caso los antisueros O:3, O:8 y O:9 para la biotipificación correspondiente. RESULTADOS: Fueron obtenidos 22 aislamientos tipificándose 8 serotipos pertenecientes al O:3 y 8 al O:9 correspondientes al biotipo 1; y, en 6 muestras no fue posible la serotipificación. No se encontró en el total de los aislados el serotipo O:8. CONCLUSIONES: En base en la metodología, se registró la presencia de Y. enterocolitica y sus serogrupos en tejido linfático de porcinos por la primera vez en México; esto es importante porque el patógeno y sus serotipos aislados están comprometidos con mayor frecuencia con problemas de salud pública.
Caracterización fenotípica y molecular de cepas de Pasteurella multocida aisladas de exudado nasal de bovinos, en dos cuencas lecheras de México
Campuzano Ocampo, Víctor Manuel;González Rodríguez, Alma Delia;Hernández Castro, Rigoberto;Suárez Güemes, Francisco;Trigo Tavera, Francisco José;Jaramillo Arango, Carlos Julio;
Veterinaria México , 2011,
Abstract: two hundred and fifty strains of p. multocida isolated from nasal exudate were obtained, 182 clinically healthy bovine strains and 68 clinically ill with pneumonia bovine strains, from two dairy complexes, one in the tizayuca region of hidalgo state (n = 81), and another in the region lagunera of the states of coahuila and durango (n = 169), mexico. strains were identifed by conventional biochemical tests and api 20ne commercial system. capsular typing was performed by testing hyauloronidase and acrifavine, as well as by a multiplex pcr for amplification of genes hyac-hyad and dcbf. the overall results of hyaluronidase by the test showed that 90.4% (226/250) of the strains were capsular type a and through the acrifavine test 9.6% (24/250) was capsular type d. using the multiplex pcr, 92% (230/250) was capsular type a and 8% (20/250) was capsular type d. the comparison of results between biochemical tests and pcr are consistent in identifying strains of capsular type a but not with the capsular type d. it was possible to confrm that capsular type a of p. multocida is predominat in mexico.
Frecuencia de aislamientos de Mannheimia haemolytica y Pasteurella multocida en becerras con signos clínicos de enfermedad respiratoria, en un complejo lechero del estado de Hidalgo, México
José Luis de la Rosa Romero,Carlos Julio Jaramillo-Arango,José Juan Martínez-Maya,Francisco Aguilar-Romero
Veterinaria México , 2012,
Abstract: Se determinó la frecuencia de Mannheimia haemolytica (Mh) y Pasteurella multocida (Pm) obtenidas de exudado nasal de becerras afectadas por enfermedad respiratoria, en un complejo lechero del estado de Hidalgo, México, evaluadas durante 5 meses en un estudio descriptivo transversal. El aislamiento e identificación se hizo mediante procedimientos selectivos y pruebas bioquímicas. Se evaluó la asociación de algunas variables con el aislamiento de Mh y Pm, mediante Ji cuadrada o Fisher, el cálculo de la razón de momios y el análisis de regresión logística. De 239 becerras menores de un a o, estudiadas, en 84 (35.14%) se aisló Mh o Pm, de ellas, 67 (28.03%) con Mh y 17 (7.11%) con Pm; en 8 becerras (3.10%) se aislaron ambos microorganismos. Se evaluaron posibles factores de riesgo: alojamiento, tratamiento y vacunación. La frecuencia de aislamientos de Mh fue mayor que la de Pm en becerras alojadas en becerreras o en corrales (P 0.05), o que estaban en becerreras a la intemperie (P 0.05), similarmente, la frecuencia de Mh y Pm juntas, fue mayor en becerras no vacunadas contra rinotraqueitis infecciosa bovina (RM = 2.93, P 0.05), diarrea viral bovina (RM = 4.26, P 0.05), parainfluenza 3PI3 (RM = 2.68, P 0.05), virus respiratorio sincitial bovino (RM = 2.36, P 0.05) y mannheimiosis (RM = 1.97, P 0.05). Las variables que permanecieron en el modelo de regresión fueron alojar las becerras en los establos y la no vacunación contra diarrea viral bovina. Mh presentó la mayor tasa de aislamientos en becerras alojadas tanto en becerreras individuales como en corrales o a la intemperie.
Teniosis y detección de anticuerpos anticisticerco en personas de una comunidad rural del estado de Guerrero
Martínez-Maya,José Juan; Aluja,Aline S de; Avila-Ramírez,Guillermina; Aguilar-Vega,Laura; Plancarte-Crespo,Agustín; Jaramillo-Arango,Carlos Julio;
Salud Pública de México , 2003, DOI: 10.1590/S0036-36342003000200003
Abstract: objective: to assess the frequency of taenia solium carriers and its relationship with human cysticercosis in a mexican locality. material and methods: a cross-sectional study was conducted in 1998, in a locality of guerrero state, mexico. four hundred and three fecal samples were analyzed by enzyme-linked immunosorbent assay (elisa) to detect taenia sp coproantigen. ninety two serum samples were also analyzed for antibodies against cisticerci using the immunoelectrotransfer blot assay (iet). data were analyzed using descriptive statistics and odds ratios. results: five of the 403 fecal samples were positive (1.2%). the adult cestode was recovered in only two people. three (3.26%) out of the 92 serum samples that were analyzed for anticysticercus antibodies were positive. seventeen serum samples corresponded to people living with a person positive to the coproantigen test (first group), the remaining 75 were obtained from people without a history of releasing taenia proglottids (second group). in the first group, 2 positive sera were detected (11.8%), while in the second only 1 was positive (1.3%) (odds ratio= 9.87, 95% confidence interval 0.64 to 295.56, p= 0.08). conclusions: the difficulty to obtain the adult parasite in persons positive to coproantigens, may be due to difficult expulsion, a shorter permanence of the parasite in the host, insufficient dosage of treatment, or to lack of specificity of the diagnostic test. further studies are needed to evaluate these possibilities; a better knowledge of parasite transmission dynamics will allow the implementation of prevention and control measures and a better assessment of diagnostic tests under field conditions.
The UNC-method: a problem-based software development method
Zapata Jaramillo,Carlos Mario; Arango Isaza,Fernando;
Ingeniería e Investigación , 2009,
Abstract: software engineers use development methods to guarantee on-time delivery, keeping to budget and quality in their software applications. there are two kinds of development methods: plan-driven and agile methods. both of them still have problems; these refer to resolving problems instead of thinking about them, they use informal or semi-formal artefacts and they leave consistency management to the analysts. the unc-method (a problem-based software development method) is defined in this paper. the unc-method is currently being developed in the universidad nacional de colombia; it has been used by students from the school of systems as part of their training in methodological software development during the last five years. the unc-method is a mixture of well-known artefacts (i.e. uml diagrams and graphical user interfaces) and non-traditional approaches (e.g. cause-and-effect diagram, kaos goal diagrams and pre-conceptual schemas) used in trying to overcome the aforementioned problems. a case study is also used for exemplification purposes.
UNC-Method: un método de desarrollo de software basado en problemas The UNC-method: a problem-based software development method
Zapata Jaramillo Carlos Mario,Arango Isaza Fernando
Ingeniería e Investigación , 2009,
Abstract: Los ingenieros de software emplean los métodos de desarrollo para garantizar la entrega puntual, el cumplimiento de los presu-puestos y la calidad de las aplicaciones de software. Existen dos tipos de métodos de desarrollo: los dirigidos por planes, y los á-giles. Ambos, aún presentan problemas: se refieren a la solución en lugar de pensar en el problema, usan artefactos formales o semiformales y dejan el manejo de la consistencia en manos de los analistas. En este artículo se define UNC-Method, un méto-do de desarrollo de software basado en problemas, que se viene desarrollando en la Universidad Nacional de Colombia y que se usa en la Escuela de Sistemas como parte del entrenamiento en desarrollo metodológico de software a los estudiantes de di-cha universidad durante los últimos cinco a os. UNC-Method combina artefactos tradicionales del desarrollo de software (como los diagramas de UML y las interfaces gráficas de usuario) con enfoques no tradicionales en dicha disciplina (como los diagra-mas causa-efecto, los diagramas de objetivos de KAOS y los esquemas preconceptuales) en un esfuerzo por resolver los proble-mas antes mencionados. Además, se ejemplifica el método con un caso de estudio. Software engineers use development methods to guarantee on-time delivery, keeping to budget and quality in their software applications. There are two kinds of development methods: plan-driven and agile methods. Both of them still have problems; these refer to resolving problems instead of thinking about them, they use informal or semi-formal artefacts and they leave consis-tency management to the analysts. The UNC-method (a problem-based software development method) is defined in this paper. The UNC-method is currently being developed in the Universidad Nacional de Colombia; it has been used by students from the School of Systems as part of their training in methodological software development during the last five years. The UNC-method is a mixture of well-known artefacts (i.e. UML diagrams and graphical user interfaces) and non-traditional approaches (e.g. cause-and-effect diagram, KAOS goal diagrams and pre-conceptual schemas) used in trying to overcome the aforementioned pro-blems. A case study is also used for exemplification purposes.
Análisis de un Caso de Estudio en KCPM para la Generación de Diagramas de Clases.
Carlos Mario Zapata,Fernando Arango,Aldrin Fredy Jaramillo
Avances en Sistemas e Informática , 2005,
Abstract: There are few and incipient proposals about semi-automatic generation of conceptual schemas (specially class diagram) from Spanish verbal models. However, for other languages like English, French and German,among others, there are more experience. In this paper, we discuss class diagram generation based on KCPM (Klagenfurt Conceptual Predesign Model), from Spanish, and we apply it to a case study; furthermore, we propose the use of classic syntactic trees, for syntactic analysis legibility purposes, and we add an additional column to KCPM schema for assumed thematic role inclusion, for facilitating conversion rules applying. Obtained results show the goodness of proposed modifications, and promote new research about this topic.
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