Desarrollo de una red de monitoreo por sensores remotos de la calidad de agua

A partir de la integración de tecnologías, se diseña una red de sensores cuyos datos son transferidos de manera remota a una estación central a partir de un sistema inalámbrico de transmisión, para el monitoreo de la calidad del agua

Induced aerocystitis and hemato-immunological parameters in Nile tilapia fed supplemented diet with essential oil of Lippia alba

O presente estudo avaliou a suplementação dietária com óleo essencial de Lippia alba sobre os parâmetros hemato-imunológicos em tilápias do Nilo (Oreochromis niloticus) submetidas à inflamação aguda induzida por carragenina na bexiga natatória. Pelo período de 45 dias, 96 peixes foram divididos em quarto tratamentos em triplicata: a) peixes suplementados com óleo esencial de L. alba (4 mL kg-1 de ração) injetados com carragenina; b) peixes suplementados com álcool de cereais injetados com carragenina; peixes não suplementados com óleo essencial injetados com carragenina; c) peixes não suplementados não injetados. Os níveis de cortisol, eritrograma, leucograma e o infiltrado inflamatório foram analisados seis horas após o estímulo inflamatório. Peixes injetados com carragenina apresentaram reação inflamatória aguda na bexiga natatória caracterizada por maior infiltrado de neutrófilos e monócitos. O número de neutrófilos circulantes foi significativamente maior nos peixes suplementados com L. alba quando comparado aos outros tratamentos. Não houve diferença nos níveis de cortisol. Para a dose, o tempo e a forma de administração testada, a suplementação com óleo essencil de L. alba não apresentou atividade anti-inflamatória. Por outro lado, foi constatada influência da suplementação dietária no número de neutrófilos após a aerocistite enfatizando a sua característica imunomoduladora.The present study evaluated the dietary supplementation with essential oil of Lippia alba on the hemato-immunological parameters of Nile tilapia (Oreochromis niloticus) submitted to acute inflammation induced by carrageenin injection in the swim bladder. For a period of 45 days, 96 fish were divided in four treatments in triplicate, as follows: fish fed supplemented diet with essential oil of L. alba (4 mL kg-1 dry ration) injected with carrageenin; fish fed supplemented diet with cereal alcohol injected with carrageenin; fish fed unsupplemented diet with essential oil injected with carrageenin; fish fed unsupplemented diet and noninjected. Cortisol levels, erythrogram, leukogram and the inflammatory infiltrate were analyzed 6 h after inflammatory stimulus. Carrageenin-injected fish showed acute inflammatory reaction in the swim bladder characterized by higher infiltrate of neutrophils and monocytes. The circulating neutrophils number was significantly higher in fish fed L. alba when compared to other treatments. No difference in cortisol levels was found. For dose, time and administration form tested, supplementation with essential oil of L. alba did not present anti-inflammatory activity. On the other hand, influence of dietary supplementation was observed on the neutrophils number after induced aerocystitis highlighting its immunomodulatory characteristic

El mundo es un parto constante: Poemas ganadores del concurso "Nuevos talentos en homenaje a Osvaldo Sauma"

El libro recoge los poemas ganadores de un concurso de poesía hecho como homenaje al poeta Osvaldo Sauma.Universidad de Costa Rica/[]/UCR/Costa RicaUCR::Vicerrectoría de Acción Social::Extensión CulturalUCR::Sedes Regionales::Sede del Atlántic

Health-related quality of life in patients with type 1 diabetes mellitus in the different geographical regions of Brazil : data from the Brazilian Type 1 Diabetes Study Group

Background: In type 1 diabetes mellitus (T1DM) management, enhancing health-related quality of life (HRQoL) is as important as good metabolic control and prevention of secondary complications. This study aims to evaluate possible regional differences in HRQoL, demographic features and clinical characteristics of patients with T1DM in Brazil, a country of continental proportions, as well as investigate which variables could influence the HRQoL of these individuals and contribute to these regional disparities. Methods: This was a retrospective, cross-sectional, multicenter study performed by the Brazilian Type 1 Diabetes Study Group (BrazDiab1SG), by analyzing EuroQol scores from 3005 participants with T1DM, in 28 public clinics, among all geographical regions of Brazil. Data on demography, economic status, chronic complications, glycemic control and lipid profile were also collected. Results: We have found that the North-Northeast region presents a higher index in the assessment of the overall health status (EQ-VAS) compared to the Southeast (74.6 ± 30 and 70.4 ± 19, respectively; p < 0.05). In addition, North- Northeast presented a lower frequency of self-reported anxiety-depression compared to all regions of the country (North-Northeast: 1.53 ± 0.6; Southeast: 1.65 ± 0.7; South: 1.72 ± 0.7; Midwest: 1.67 ± 0.7; p < 0.05). These findings could not be entirely explained by the HbA1c levels or the other variables examined. Conclusions: Our study points to the existence of additional factors not yet evaluated that could be determinant in the HRQoL of people with T1DM and contribute to these regional disparities

Resultados Semilleros de Investigación 2009-2010

La publicación recoge los doce informes finales de investigación presentados por los estudiantes de ocho Semilleros 1 y cuatro Semilleros 2, correspondientes a la convocatoria 2009–2010 y se constituye en el Número 25 de la Serie de Investigaciones en Construcción, si bien este es el primer Número publicado en formato digital que UNIJUS se permite poner a disposición no sólo de la comunidad universitaria, sino también de la sociedad colombiana e internacional, interesada en los temas estudiados por los jóvenes investigadores de la Facultad de Derecho, Ciencias Políticas y Sociales de la Universidad Nacional de Colombia

Predictibilidad del puntaje de admisión al ITCR para egresados de colegios agropecuarios

Chaves Campos, A. (1991). Predictibilidad del puntaje de admisión al ITCR para egresados de colegios agropecuarios. [Tesis de Licenciatura]. Universidad Nacional, Costa Rica.El puntaje de admisión es el criterio más utilizado por el Instituto Tecnológico de Costa Rica para la selección de estudiantes de primer ingreso. El mismo está compuesto por una prueba de aptitud académica, la cual consta de dos partes: prueba verbal y prueba matemática; además del promedio de calificaciones del IV Ciclo. Estudios realizados muestran que el puntaje de admisión utilizado como criterio de selección, es un buen predictor de éxito académico. En el ITCR existen carreras de baja demanda de matrícula, entre las que se incluyen las del área agropecuaria, lo anterior tiene como consecuencia, que un buen número de estudiantes ingresan con bajos puntajes de admisión a éstas carreras. En el presente estudio se evalúa, en forma ex-post-facto, un nuevo criterio: la modalidad de colegio de procedencia del estudiante; sea ésta académica o agropecuaria, en dos carreras del área agrícola y tres carreras que no pertenecen a ésta área, en el ITCR. La muestra está compuesta por los estudiantes que en 1985 y 1986 ingresan por primera vez, a las carreras en estudio, y que provienen de colegios de zona rural. Lo anterior por cuanto, la mayor parte de los colegios agropecuarios se encuentran ubicados en zonas rurales. Se analiza si existe diferencia en cuanto a la predictibilidad del puntaje de admisión, para estudiantes que provienen de la modalidad agropecuaria, e ingresan a carreras de ésta área, con respecto a los que ingresan a carreras no agropecuarias. El mismo procedimiento se realiza con los estudiantes que provienen de colegios académicos de zona rural.The admission score is the criterion most used by the Technological Institute of Costa Rica for the selection of first-time students. It is composed of an academic aptitude test, which consists of two parts: verbal test and mathematical test; in addition to the average of grades of the IV Cycle. Studies carried out show that the admission score used as a selection criterion is a good predictor of academic success. At the ITCR there are careers with a low enrollment demand, including those in the agricultural area, the foregoing has as a consequence that a good number of students enter with low admission scores to these careers. In this study, a new criterion is evaluated ex-post-facto: the type of college the student comes from; be it academic or agricultural, in two careers in the agricultural area and three careers that do not belong to this area, at the ITCR. The sample is made up of students who entered the careers under study for the first time in 1985 and 1986, and who come from schools in rural areas. This is because most of the agricultural schools are located in rural areas. It is analyzed whether there is a difference in the predictability of the admission score, for students who come from the agricultural modality, and enter careers in this area, with respect to those who enter non-agricultural careers. The same procedure is carried out with students who come from academic schools in rural areas.Universidad Nacional, Costa RicaDepartamento de Químic

Desarrollo de una red de monitoreo por sensores remotos de la calidad de agua

A partir de la integración de tecnologías, se diseña una red de sensores cuyos datos son transferidos de manera remota a una estación central a partir de un sistema inalámbrico de transmisión, para el monitoreo de la calidad del agua

Desarrollo de una red de monitoreo por sensores remotos de la calidad de agua

A partir de la integración de tecnologías, se diseña una red de sensores cuyos datos son transferidos de manera remota a una estación central a partir de un sistema inalámbrico de transmisión, para el monitoreo de la calidad del agua