Se aborda la influencia que tiene adicción a Internet sobre agresividad presentan los estudiantes de educación secundaria del Perú. utilizó el método descriptivo, con diseño causal comparativo se evaluó 2, 225 secundaria, 13 departamentos costa, sierra y selva, en su internet.
 Los resultados mostraron, entre otras cosas que, mayoría altos niveles internet tienden ser más agresivos ...

Amphibians stand at the forefront of a global biodiversity crisis. More than one-third of amphibian species are globally threatened, and over 120 species have likely suffered global extinction since 1980. Most alarmingly, many rapid declines and extinctions are occurring in pristine sites lacking obvious adverse effects of human activities. The causes of these "enigmatic" declines remain highly...

During the last years, the efficiency of pollution removal and sludge treatment processes are major concerns because of the more restrictive legislation related to nutrient discharge. A key point in the field of activated sludge wastewater treatment plants (WWTPs) is the secondary settler efficiency. This paper presents a benchmark study to control, using fuzzy algorithms, the sludge height in ...

1 Nerad JA, Kersten RC, Neuhaus RW, et al. Classification and management of eyelid disorders: ectropion. In: Nerad JA, Kersten RC, Neuhaus RW, et al, eds. Basic and clinical science course: orbit, eyelids, and lacrimal system. San Francisco: American Academy of Ophthalmology, 1997:142–8. 2 Bashour M, Harvey J. Causes of involutional ectropion and entropion—age-related tarsal changes are the key...

During 1984-2000, canopy tree growth in old-growth tropical rain forest at La Selva, Costa Rica, varied >2-fold among years. The trees' annual diameter increments in this 16-yr period were negatively correlated with annual means of daily minimum temperatures. The tree growth variations also negatively covaried with the net carbon exchange of the terrestrial tropics as a whole, as inferred from ...

El presente artículo busca hacer en primera instancia una aproximación teórica a los conceptos de clientelismo, paternalismo y simulación para luego observarlos analizarlos con base el estudio caso la Alianza Cacaoteros Selva Asociación Civil, cuyos agremiados se encuentran Maravilla Tenejapa, Chiapas. Desde particularidad este pretende identificar si las prácticas clientelares, paternalistas s...

Documentamos 18 localidades nuevas para Cryptonanus chacoensis en seis provincias de Argentina, a partir restos recuperados egagrópilas aves rapaces y material depositado colecciones. Los registros Santa Fe extienden hacia el oeste área distribución la especie entre 9,4 km 135 km. Teniendo cuenta un contexto ecorregional unidades vegetación, las ecorregiones Delta e Islas los ríos Paraná Urugua...

En este artículo proponemos una lectura de los feminicidios representados en la cuarta parte 2666 (2004) Roberto Bolaño (“La crímenes”) y Chicas muertas (2014) Selva Almada a partir lo que entendemos como “basurización” del cuerpo femenino. Esta basurización es provocada, según las narraciones, por diversos factores, entre juegan un papel central neoliberalización economía, discurso machista (v...

We used parentage analysis to estimate seedling recruitment distances and genetic composition of seedling patches centred around reproductive trees of the animal-dispersed Neotropical canopy palm Iriartea deltoidea in two 0.5 ha plots within second-growth forest and one 0.5 ha plot in adjacent old-growth forest at La Selva Biological Field Station in north-eastern Costa Rica. Seedlings were sig...

BINABITROP is a bibliographical database of more than 38000 records about the ecosystems and organisms of Costa Rica. In contrast with commercial databases, such as Web of Knowledge and Scopus, which exclude most of the scientific journals published in tropical countries, BINABITROP is a comprehensive record of knowledge on the tropical ecosystems and organisms of Costa Rica. We analyzed its co...