166,759 research outputs found
Gu\uedas Alimentarias en Am\ue9rica Latina: Informe de la consulta t\ue9cnica regional de las Gu\uedas Alimentarias
No full textEn seguimiento a los acuerdos de la Conferencia Internacional de Nutrici\uf3n, realizada en Roma en 1992 (1), el Instituto de Nutrici\uf3n de Centroam\ue9rica y Panam\ue1 - INCAP- y la Organizaci\uf3n Panamericana de la Salud -OPShan apoyado el desarrollo, implementaci\uf3n y evaluaci\uf3n de gu\uedas alimentarias en los pa\uedses de Am\ue9rica Latina, a trav\ue9s de talleres de capacitaci\uf3n, asistencia t\ue9cnica directa y transferencia de metodolog\uedas. Este cap\uedtulo presenta un resumen del proceso propuesto para la elaboraci\uf3n implementaci\uf3n y evaluaci\uf3n de las gu\uedas alimentarias y hace un an\ue1lisis de las gu\uedas alimentarias de Am\ue9rica.
I. Modelo propuesto para la elaboraci\uf3n de Gu\uedas Alimentarias
Las gu\uedas alimentarias, por definici\uf3n, son un instrumento educativo que adapta los conocimientos cient\uedficos sobre requerimientos nutricionales y composici\uf3n de alimentos en una herramienta pr\ue1ctica que facilita a la poblaci\uf3n la selecci\uf3n de una dieta saludable. Las gu\uedas alimentarias est\ue1n presentadas en forma sencilla y comprensible para que ayuden a personas sin conocimientos cient\uedficos de alimentaci\uf3n y nutrici\uf3n a seleccionar dietas sanas.
El modelo propuesto por el INCAP/OPS (2), toma en cuenta la informaci\uf3n sobre salud, alimentaci\uf3n y nutrici\uf3n, tal como el estado nutricional de la poblaci\uf3n, el perfil epidemiol\uf3gico, la informaci\uf3n acerca de la disponibilidad, costo, acceso y consumo de alimentos y la composici\uf3n qu\uedmica de los mismos, as\ued como los h\ue1bitos alimentarios de la poblaci\uf3n. A estos criterios se incorporan elementos de la antropolog\ueda social, que permiten adaptar las gu\uedas alimentar\uedas a la realidad social, cultural y econ\uf3mica del grupo objetivo..
YU-FENG GU, MORIGENGAOWA, RI-HONG JIANG, BAO-DONG LIU & YUE-HONG YAN (2021) Sphaeropteris guangxiensis Y. F. Gu & Y. H. Yan (Cyatheaceae), a new species of tree fern from Southern China. Phytotaxa 518 (1): 69-74.
No full textYu-Feng Gu, Morigengaowa, Ri-Hong Jiang, Bao-Dong Liu (2021): YU-FENG GU, MORIGENGAOWA, RI-HONG JIANG, BAO-DONG LIU & YUE-HONG YAN (2021) Sphaeropteris guangxiensis Y. F. Gu & Y. H. Yan (Cyatheaceae), a new species of tree fern from Southern China. Phytotaxa 518 (1): 69-74. Phytotaxa 520 (1): 116-116, DOI: https://doi.org/10.11646/phytotaxa.520.1.10, URL: http://dx.doi.org/10.11646/phytotaxa.520.1.1
Osteoinductive bone substitutes
No full textWismeyer, D. [Promotor]Gu, Z. [Promotor]Liu, Y. [Copromotor
Fluctuations and scaling of inverse participation ratios in random binary resonant composites
No full textWe study the statistics of local-field distribution solved by the Green's-function formalism [Y. Gu , Phys. Rev. B 59, 12847 (1999)] in disordered binary resonant composites. For a percolating network, inverse participation ratios (IPR's) with q=2 are illustrated, as well as typical local-field distributions of localized and extended states. Numerical calculations indicate that for a definite fraction p the distribution function of the IPR P-q has a scale invariant form. We also show the scaling behavior of the ensemble-averaged <P-q> described by the fractal dimension D-q. To relate the eigenvector correlations to resonance level statistics, the axial symmetry between D-2 and the spectral compressibility chi is obtained.Physics, Condensed MatterSCI(E)0ARTICLE1null6
Matem\ue1tica Financiera Gu\ueda de Estudio
No full textEsta gu\ueda tiene por finalidad servir de orientaci\uf3n para el programa de los estudios inspeccionados unipersonal (P.E.I.U.), de la oficina de apoyo t\ue9cnico docente (O.A.T.D.), del Decanato de Administraci\uf3n y Contadur\ueda (D.A.C.), de la Universidad Centroccidental \u93Lisandro Alvarado\u94 (UCLA), en la ciudad de Barquisimeto, Estado Lara, Venezuela. La presente gu\ueda de estudio para la asignatura Matem\ue1tica financiera se ha realizado para suplir una necesidad ya que la educaci\uf3n a distancia emplea como medio b\ue1sico de comunicaci\uf3n los textos escritos. Esta gu\ueda contiene el material de la asignatura en la que se consigue el contenido especifico y todas las orientaciones precisas par su estudio. La metodolog\ueda utilizada se basa en la revisi\uf3n bibliogr\ue1fica de los textos existentes, casi todos de otros pa\uedses. En la parte te\uf3rica, se a adaptado la terminolog\ueda y s\uedmbolos al lenguaje del pa\ueds y se presentan ejemplos usuales a las actividades comerciales y financieras, adem\ue1s se plantean ejercicios a resolver en cada componente de las unidades que conforman el programa vigente de la asignatura. En su parte inicial se presenta las instrucciones a seguir por los estudiantes, el diagrama estructural y la secuencia de las unidades curriculares. En cada unidad se presentan sus objetivos, la secuencia del contenido curricular, un glosario y la bibliograf\ueda pertinente
FIGURE 3 in Sphaeropteris guangxiensis Y. F. Gu & Y. H. Yan (Cyatheaceae), a new species of tree fern from Southern China
No full textFIGURE 3. Fiddleheads and sori on pinnule segments.—A & D. Sphaeropteris brunoniana.—B & E. S. guangxiensis.—C & F. S. hainanensis.Published as part of Gu, Yu-Feng, Jiang, Ri-Hong, Liu, Bao-Dong & Yan, Yue-Hong, 2021, Sphaeropteris guangxiensis Y. F. Gu & Y. H. Yan (Cyatheaceae), a new species of tree fern from Southern China, pp. 69-74 in Phytotaxa 518 (1) on page 72, DOI: 10.11646/phytotaxa.518.1.8, http://zenodo.org/record/544801
Liderazgo y "Cultura Gu\ueda"
No full textDesde finales de agosto, Alemania ha estado perturbada por olas de excita-ci\uf3n pol\uedtica en torno a la integraci\uf3n, el multiculturalismo y el papel de la cultura \uabnacional\ubb como \uabcultura gu\ueda\ubb (Leitkultur). Estos debates, a su vez, refuerzan las tendencias hacia el crecimiento de la xenofobia entre la poblaci\uf3n en genera
Using a Bayesian belief network to aid differential diagnosis of tropical bovine diseases
No full textIn Chile, Mycobacterium avium subsp. paratuberculosis (Map) has been isolated on several occasions and clinical cases have been reported. Nevertheless, diagnostic tests have not yet been validated for this agent in the Chilean setting. The objective of the study was to validate a commercial ELISA to detect Map shedding dairy cows in management conditions, prevalence and stages of infection existing in Southern Chile, utilising different statistical approaches. Blood and faeces were collected from 1333 lactating cows in 27 dairy herds (both large commercial and smallholder dairy farms) between September 2003 and August 2004. Within the herds up to a maximum of 100 dairy cows were selected based on age (≥3 years old) and, if present, clinical signs of a Map infection. In herds with less than 100 cows, all cows ≥3 years old were sampled. Blood samples were tested using a commercial ELISA kit (IDEXX Laboratories, Inc.). Faecal samples were cultured on Herrold's Egg Yolk Medium (HEYM). Latent class models (i.e. maximum likelihood (ML) methods and Bayesian inference) were used to determine the validity of the ELISA. Map was cultured from 54 (4.1%) cows and 10 (37.0%) herds, which were all large, commercial dairy herds. As a result of empty cells in the cross-tabulations, the ML model provided the same results as the validation with faecal culture as the gold-standard. In the Bayesian model, the Se and Sp of the ELISA were estimated to be 26% (95% CI: 18-35%) and 98.5% (95% CI: 97.4-99.4%), respectively. For faecal culture, the Se was 54% (95% CI: 46-62%) and the Sp was 100% (95% CI: 99.9-100%). Interestingly, the prevalence in the smallholder dairy farms was estimated to be 8% even though there were no faecal culture positive cows detected in those herds. There was no significant correlation between the two tests. The advantage of Bayesian inference is that the Se and Sp of both tests are obtained in one model relative to the (latent) true disease status, the model can handle small datasets and empty cells and the estimates can be corrected for the correlation between tests when the tests are not conditionally independent. Therefore, Bayesian analysis was the preferred method for Map that lacks a gold-standard and usually has low cow-level prevalence
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