National Autonomous University of Nicaragua

About: National Autonomous University of Nicaragua is a education organization based out in Managua, Nicaragua. It is known for research contribution in the topics: Population & Public health. The organization has 775 authors who have published 715 publications receiving 9791 citations.

Distribución y abundancia de peces de la familia Loricariidae (Pleco) y su relación con los peces de interés comercial en los alrededores de la Isla de Ometepe

Abstract: El objetivo del presente estudio fue determinar la distribucion y abundancia de peces de la familia Loricariidae (pleco) y su relacion con los peces de interes comercial en los alrededores de la Isla de Ometepe, en el periodo de febrero-agosto 2012. La isla se delimito en dos areas, noreste y suroeste y se pesco en dos zonas (A y B). En la zona de pesca A se obtuvo un total de 116 plecos, de los cuales 115 se encontraron en las localidades del area noreste, y el contenido estomacal estaba compuesto por algas filamentosas bentonicas, detritus y materia organica acompanada de lodo. En la zona de pesca B se capturaron 1,438 peces pertenecientes a 7 familias y 15 especies. El area noreste presento mayor volumen de captura que el area suroeste con 1001 y 437 peces, respectivamente. La especie mas abundante fue Amphilophus citrinellus, seguida de Brycon guatemalensis y Amphilophus labiatus. Se capturaron 16 plecos, correspondiendo al 1.1% del total de peces capturados. El genero Amphilophus obtuvo valores promedios de factor de condicion (K) en las areas noreste y suroeste de K= 4.4±0.30 EEM y K= 2.2±0.35 EEM, respectivamente. La localidad mas diversa fue San Jose del Sur (H=1.545) y la menos diversa fue San Marcos (H=0.640). El resultado del monitoreo diario en la zona B muestra la captura de 532 plecos, correspondiendo 498 peces para el area noreste y 34 para el area suroeste. Palabras clave: algas / detritos / factor de condicion

Relación del El Tipo de Cambio Real y las Exportaciones en Nicaragua: una Aplicación de Vectores Autorregresivos (VAR)

Abstract: The present study aims to evaluate the relationship between Nicaraguan exports and the evolution of the Real Exchange Rate (TCR). Quantitative techniques and monthly time series were applied for the period 2006-2016. The results indicate that through the VAR model, it is possible to verify that the variable real exchange rate has a significant impact on Nicaraguan exports. However, the magnitude of the impact will depend to a large extent on the trade policy adopted by Nicaragua to promote a level of market diversification and export products.

Factores que inciden en la calidad de vida del jubilado

Abstract: Retirement represents a major restructuring of the functions that define the space of the life of a person and, therefore, requires flexibility and capacity of adaptation to the new conditions. Chieza (2008). Retirement can be viewed as a transition that involves the enlargement, the redefinition and change of roles, the extension of the time of retirement, is an event that will allow a temporal process and that it is required to take decisions, implement and take the consequences”. The centrality of work in relation to other elements, such as the family, in the definition of self-awareness is very different from one person to another, which implies that the transition to retirement can require different levels of restructuring itself. The stage of preparation prior to the retirement coincides with a progressive clarification of the attitudes about retirement planning and the time and manner of their withdrawal from working life. At the time of retirement, the plans are more detailed, but the attitude tends to degenerate into anxiety and despair for the loss of their labour activity. Of course, the phase of preparation for retirement has a personal meaning different depending on the individual's history, and the centrality of the work activity performed. Retirement involves the loss of social contacts, but it is not yet clear the extent of loss, both in terms of extension of the social network, such as quality of support received. You should consider social support to distinguish the different sources (family, friends, etc.) and different types (emotional, instrumental, etc) of social support that affect the quality of life of the retired considering the aspect of the physical activity, health, education, power, intellectual activity, the activity physical, social, among other factors or important aspects of the retiree

Star Formation in CALIFA survey perturbed galaxies. II. Star Formation Histories and Oxygen Abundances

Abstract: Galaxy evolution is generally affected by tidal interactions. Firstly, in this series, we reported several effects which suggest that tidal interactions contribute to regulating star formation (SF). To confirm that so, we now compare stellar mass assembly histories and SF look-back time annular profiles between CALIFA survey tidally and non-tidally perturbed galaxies. We pair their respective star-forming regions at the closest stellar mass surface densities to reduce the influence of stellar mass. The assembly histories and annular profiles show statistically significant differences so that higher star formation rates characterize regions in tidally perturbed galaxies. These regions underwent a more intense (re)activation of SF in the last 1 Gyr. Varying shapes of the annular profiles also reflect fluctuations between suppression and (re)activation of SF. Since gas-phase abundances use to be lower in more actively than in less actively star-forming galaxies, we further explore the plausible presence of metal-poor gas inflows able to dilute such abundances. The resolved relations of oxygen (O) abundance, with stellar mass density and with total gas fraction, show slightly lower O abundances for regions in tidally perturbed galaxies. The single distributions of O abundances statistically validate that so. Moreover, from a metallicity model based on stellar feedback, the mass rate differentials (inflows$-$outflows) show statistically valid higher values for regions in tidally perturbed galaxies. These differentials, and the metal fractions from the population synthesis, suggest dominant gas inflows in these galaxies. This dominance, and the differences in SF through time, confirm the previously reported effects of tidal interactions on SF.