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Search Results: 1 - 10 of 203108 matches for " Jaime Guzmán-Ledezma "
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Folk medicine in the northern coast of Colombia: an overview
Harold Gómez-Estrada, Fredyc Díaz-Castillo, Luís Franco-Ospina, Jairo Mercado-Camargo, Jaime Guzmán-Ledezma, José Medina, Ricardo Gaitán-Ibarra
Journal of Ethnobiology and Ethnomedicine , 2011, DOI: 10.1186/1746-4269-7-27
Abstract: Data on the use of medicinal plants were collected using structured interviews and through observations and conversations with local communities. A total of 1225 participants were interviewed.Approximately 30 uses were reported for plants in traditional medicine. The plant species with the highest fidelity level (Fl) were Crescentia cujete L. (flu), Eucalyptus globulus Labill. (flu and cough), Euphorbia tithymaloides L. (inflammation), Gliricidia_sepium_(Jacq.) Kunth (pruritic ailments), Heliotropium indicum L. (intestinal parasites) Malachra alceifolia Jacq. (inflammation), Matricaria chamomilla L. (colic) Mentha sativa L. (nervousness), Momordica charantia L. (intestinal parasites), Origanum vulgare L. (earache), Plantago major L. (inflammation) and Terminalia catappa L. (inflammation). The most frequent ailments reported were skin affections, inflammation of the respiratory tract, and gastro-intestinal disorders. The majority of the remedies were prepared from freshly collected plant material from the wild and from a single species only. The preparation of remedies included boiling infusions, extraction of fresh or dry whole plants, leaves, flowers, roots, fruits, and seeds. The parts of the plants most frequently used were the leaves. In this study were identified 39 plant species, which belong to 26 families. There was a high degree of consensus from informants on the medical indications of the different species.This study presents new research efforts and perspectives on the search for new drugs based on local uses of medicinal plants. It also sheds light on the dependence of rural communities in Colombia on medicinal plants.About 80% of the populations of developing countries continue using traditional resources in health care [1-6]. The main goal of ethnopharmacology is to identify novel compounds derived from plants and animals for use in indigenous medical systems. This knowledge can be used in the development of new pharmaceuticals. Most of the literature
La competitividad internacional: reflexiones sobre las ventajas competitivas en los países industrializados y semiindustrializados
Alenka Guzmán,Jaime Abortes
Política y cultura , 1993,
El citocromo P-450 y la respuesta terapéutica a los antimaláricos
Guzmán,Valentina; Carmona-Fonseca,Jaime;
Revista Panamericana de Salud Pública , 2006, DOI: 10.1590/S1020-49892006000100003
Abstract: objectives: to assess the relationship between the genetic and phenotypic factors linked to the cytochrome p-450 enzyme system and the response to the antimalarial drugs chloroquine, amodiaquine, mefloquine, and proguanil, as well as to determine how certain biological and social factors of the host influence the behavior of this enzymatic complex. methods: we performed a systematic review of the medical bibliographic databases pubmed, excerpta medica, lilacs, and scielo by using the following spanish and english descriptors: "cyp-450" and "citocromo p-450" in combination with "proguanil" (and with "mefloquina," "cloroquina," and "amodiaquina"), "farmacocinética de proguanil" (and the same using "mefloquina," "cloroquina," and "amodiaquina"), "resistencia a proguanil" (and the same using "mefloquina," "cloroquina," and "amodiaquina"), "metabolismo," "farmacogenética," "enfermedad," "inflamación," "infección," "enfermedad hepática," "malaria," "nutrición," and "desnutrición." the same terms were used in english. the search included only articles published in spanish, english, and portuguese on or before 30 june 2005 that dealt with only four antimalarial drugs: amodiaquine, chloroquine, mefloquine, and proguanil. results: some genetic factors linked to human cytochrome p-450 (mainly its polymorphism), as well as other biological and social factors (the presence of disease itself, or of inflammation and infection, the use of antimalarials in their various combinations, and the patient's nutritional status) influence the behavior of this complex enzymatic system. it has only been in the last decade that the genetics of the cytochromes has been explored and that the mechanisms underlying some therapeutic interactions and aspects of drug metabolism have been uncovered, making it possible to characterize the biotransformation pathway of amodiaquine and chloroquine. hopefully new research will help answer the questions that still remain, some of which pertain to the metabo
Propagación por estacas y estudio preliminar del establecimiento in vitro de granadilla (Passiflora ligularis, juss)
Dora Flores,Jaime Brenes,Ana Guzmán
Tecnología en Marcha , 2010,
Abstract: La granadilla (Passiflora ligularis) es una especie de polinización abierta, razón por la cual presenta un alto porcentaje de variabilidad genética. En Costa Rica este cultivo ofrece una opción de diversificación agrícola para la zona de Los Santos y El Guarco de Cartago. El uso de técnicas biotecnológicas como el cultivo de tejidos favorece la explotación de este, ya que permitiría el establecimiento de plantaciones más homogéneas que contribuirían a mejorar el rendimiento y la calidad del fruto. El objetivo de esta investigación fue establecer la metodología de propagación por estacas y realizar un estudio preliminar que conduzca al establecimiento in vitro de material. Se realizaron tres introducciones de estacas al invernadero y es empleado Agrirrot (0,01% AIB) para inducir el enraizamiento; se obtuvo un 50% o más de enraizamiento y brotación de las estacas en cada introducción. Para el establecimiento in vitro se introdujeron brotes provenientes de estacas pretratadas en el invernadero. Se obtuvo un 37,5% de explantes muertos por quema, un 50% presentó contaminación fungosa, bacteriana o ambas y un 12,5% de material limpio y brotado.
Carta del presidente
Jaime E Tortós Guzmán
Revista Costarricense de Cardiología , 1999,
La enfermedad coronaria, la epidemia del Siglo XXI: Podemos enfrentarla?
Jaime E Tortós Guzmán
Acta Médica Costarricense , 2000,
Productive evaluation of slow-growing Mexican turkeys with different diets in confinement  [PDF]
Elizabeth Pérez-Lara, Marco Antonio Camacho-Escobar, Narciso Ysac ávila-Serrano, Jaime Arroyo-Ledezma, Edgar Iván Sánchez-Bernal, Mabel Rodríguez-dela Torre, Virginia Reyes-Borques
Open Journal of Animal Sciences (OJAS) , 2013, DOI: 10.4236/ojas.2013.31007

Were assessed the effect of five traditional diets backyard turkeys in confinement. The experiment lasted 36 weeks, the turkeys were randomized to one of five diets: kitchen waste + fresh forage (T1), kitchen waste (T2), commercial feed + fresh forage (T3), cracked corn + fresh forage (T4) and commercial feed (T5). Food and water were provided ad libitum. Each treatment with birds of both sexes had two repetitions with four birds and each bird was considered as an experimental unit. Were evaluated daily weight gain, total weight gain, final live weight, total length peak-tail, monthly gain peak-tail, total length, total length of wings, monthly gain wings length, and feed cost. The data were analyzed in a completely randomized arrangement with adjusted means and Tukey’s mean comparison, then an evaluation of treatment groups by analyzing clusters for semi quantitative data. The biggest daily gain, total weight gain and final live weight was obtained with treatment T3, while the highest increase in peak-length tail and wings was obtained with treatment T1 (P < 0.05). T2 treatment turned out to be most economical, but the treatment that best scores obtained was T1. We conclude that the use of kitchen waste + fresh forage is a feasible strategy to feed slow-growing turkeys.

Estudio piloto sobre selenio plasmático en personas sanas de Antioquia, Colombia
Carmona-Fonseca,Jaime; Guzmán-Pérez,Valentina;
Perspectivas en Nutrición Humana , 2011,
Abstract: problem: in latin america are few and in colombia there are no studies on the level of serum/plasma selenium. objective: to measure selenium in plasma in a group of apparently healthy people. methodology: a descriptive and longitudinal study in which plasma selenium, retinol, ferritin and body mass index were measured. selenium was measured by graphite furnace atomic absorption spectrometry (electrothermal atomization and background correction by zeeman effect). results: in total, 40 individuals from turbo or el bagre (antioquia, colombia) were evaluated. selenium level (μg/l): 43,5±12,7; confidence interval 95% 39,5-47,5; in 66% was <46 (lowest european reference level). retinol was low (<20 μg/dl) in 11% of the individuals and ferritin levels were very low in 44%. conclusions: in order to build an adequate snapshot of the situation in colombia, we must develop more studies with larger groups of individuals, with appropriate selection criteria in different regions of the country, with both genders and different ages. also, studies of se content in soil and food.
Composición de servicios: una aplicación de la web semántica y las técnicas de planificación automática
Guzmán Luna,Jaime Alberto; Ovalle Carranza,Demetrio Arturo;
Ingeniería e Investigación , 2008,
Abstract: this article proposes applying semantic web and artificial intelligence planning techniques to a web services composition model dealing with problems of ambiguity in web service description and handling incomplete web information. the model uses an owl-s services and implements a planning technique which handles open world semantics in its reasoning process to resolve these problems. this resulted in a web services composition system incorporating a module for interpreting owl-s services and converting them into a planning problem in pddl (a planning module handling incomplete information) and an execution service module concurrently interacting with the planner for executing each composition plan service.
Integración de procesos de negocio basados en servicios Web: Coreografía y satisfacción de restricciones
Giraldo,Jorge; Guzmán,Jaime A; Ovalle,Demetrio A;
Revista Ingenierías Universidad de Medellín , 2008,
Abstract: business processes sometimes need additional functions which can be reached through the use of services of the same domain or an external one. during this procedure, web services involved should be integrated in such a way that its individual functions can generate a global behavior. web-service choreography controls interaction sequences among services during integration process. this article shows an approach to modeling based on web-service choreography restrictions with the purpose of achieving its automation.
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