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Durante su vida científica Humboldt buscó siempre distinguir claramente la dife- rencia entre la pura descripción de la naturaleza y su verdadera historia. Su idea universal era la idea del Cosmos. Propiciaba una desc...

Materias / palabras clave: alexander von humboldt, 19th century, humboldtian science, history of science, travel literature, science studies; History (General) and history of Europe: History (General): Modern history, 1453-: 1789; Science: Science...

A highly sensitive dispersive micro-solid phase extraction (D-μ-SPE) method combining an ionic liquid (IL) and multi-walled carbon nanotubes (MWCNTs) for inorganic As species (As(III) and As(V)) species separation and d...

Rapid climatic changes and increasing human influence at high elevations around the world will have profound impacts on mountain biodiversity. However, forecasts from statistical models (e.g. species distribution models)...

The increasing complexity of composite materials structured on the nanometer scale requires highly sensitive analytical tools for nanoscale chemical identification, ideally in three dimensions. While infrared near-field ...

In this work we studied the temporal evolution of the resonant emission lines of neutral silver (Ag I) at wavelengths328.9 nm and 338.2 nm, in different surrounding media (He, Ar, Xe and air) and at different laser pulse...

Cold storage is extensively used to slow the rapid deterioration of peach (Prunus persica L. Batsch) fruit after harvest. However, peach fruit subjected to long periods of cold storage develop chilling injury (CI) sympto...

Resumo: Neste texto, proponho utilizar a noção de estilo como uma chave de interpretação ética para a estética fisiológica de Nietzsche no âmbito de sua crítica tardia a Wagner. Procuro analisar o papel performa...

Recent studies have been conducted in Brazil using molecular techniques for the detection of hemotrophic mycoplasmas in several mammals. In domestic cats, Mycoplasma haemofelis, 'Candidatus M. haemominutum', and 'Candida...

Considering the diffuse character Foucault attributes to power relations, it is possible to assert that the subjection of bodies is never absolute, so they are not inexorably determined by the exercise of power. This art...

Materias / palabras clave: psicoanálisis; estudios culturales; literatura; escritura; ensayo, contingencia, Borges, Psicoanálisis, escritura, literatura

En este estudio realizado en el Colegio Nacional Nicolás Esguerra, ubicado en la ciudad de Bogotá, Colombia, se evaluó el impacto de un Ambiente Virtual de Aprendizaje en los procesos metacognitivos y la solución col...

Este artículo de reflexión presenta y analiza la relación entre arte, luchas por la memoria y las disputas que se inscriben en el espacio urbano, cuando diferentes actores sociales buscan posicionar una narrativa del ...

Dos especies nuevas de Diplazium con frondas pinnado-lobuladas son descritas aquí: D. pseudocarnosum y D. salazarianum. La primera especie de ellas puede distinguirse de Diplazium carnosum por presentar escamas del rizo...

In studies of herbarium specimens and living material, we observed that several species in the genus Azolla Lam. are present in different wetlands of Costa Rica, which instigated the search for applicable names of each t...

Four new species of Grammitis Sw. (G. angustissima A. Rojas, G. roraimensis A. Rojas, G. spathulata A. Rojas and G. undulata A. Rojas) and one new species of StenoGrammitis Labiak (S. grammitoides A. Rojas) are described...

Resumo Tendo em vista os escritos nietzschianos póstumos, redigidos entre os anos de 1872 e 73, o escopo deste artigo consiste em investigar o lugar e o papel do filosofo na cultura. Analisaremos em que medida Nietzsche...

Topological interface states are formed when two photonic crystals with overlapping band gaps are brought into contact. In this work, we show a planar binary structure with such an interface state in the visible spectral...

We show that the stacks of two-dimensional semiconductor crystals with the chiral packing exhibit optical activity and circular dichroism. We develop a microscopic theory of these phenomena in the spectral range of excit...

Metallic nanoparticles supporting a localized surface plasmon resonance have emerged as promising platforms for nanoscopic labels, sensors, and (photo-) catalysts. To use nanoparticles in these capacities, and to gain me...

"Education, in and of itself, is neither irrelevant nor outmoded. However, the current need to educate a planetary citizenry under conditions relevant to the living context of our planet is palpable. A new education para...

Three new species of Danaea are described here: D. epilithica A. Rojas, D. macrophylla A. Rojas and D. moralesiana A. Rojas. The first species differs from Danaea nodosa (L.) Sm. by compact and ascending rhizome, fronds ...

The paper is a theoretical account of the Romanian Revolution viewed from the eyes of an American international security strategist who recounts his childhood in Romania. The author believes that the unresolved nature of...