Buscar
Mostrando ítems 21-30 de 9609
Hopf solitons and area-preserving diffeomorphisms of the sphere
(Kluwer Academic Publ, 2001-01-01)
We consider a (3+1)-dimensional local field theory defined on the sphere S-2. The model possesses exact soliton solutions with nontrivial Hopf topological charges and an infinite number of local conserved currents. We show ...
Simulação de perdas de solo em função de cenários de adequação ambiental em microbacias agrícolas
(2013-06-01)
In São Paulo state, deforestation and agriculture activities are increasing soil losses processes, especially in areas of susceptible soils where soil conservation practices are not adopted. Environmental adequacy at ...
Simulação de perdas de solo em função de cenários de adequação ambiental em microbacias agrícolas
(2013-06-01)
In São Paulo state, deforestation and agriculture activities are increasing soil losses processes, especially in areas of susceptible soils where soil conservation practices are not adopted. Environmental adequacy at ...
Conservation gaps and priorities in the Tropical Andes biodiversity hotspot: Implications for the expansion of protected areas
(Academic Press, 2019-02)
The Tropical Andes (TA) contain some of the most important and threatened areas for biodiversity conservation on earth. Despite the proportion of protected areas (PAs) that currently cover the TA, it is unknown if these ...
Adopting and integrated and holistic perspective for improving conservation of built heritage
(CRC Press, 2019)
Architectural heritage corresponds to one of the most studied cultural products. Recent contributions in this field compel us to understand its conservation far beyond physical interventions. Thus, the aim of this paper ...
Harmonic, reactive and unbalance compensation by means of CPT framework
(2009-12-01)
This paper presents possible selective current compensation strategies based on the Conservative Power Theory (CPT). This recently proposed theory, introduces the concept of complex power conservation under non-sinusoidal ...
Efficiency of protected areas in Amazon and Atlantic Forest conservation: A spatio-temporal view
(2018-02-01)
The Amazon and Atlantic Forest are considered the world's most biodiverse biomes. Human and climate change impacts are the principal drivers of species loss in both biomes, more severely in the Atlantic Forest. In response ...