Relativistic Effects of Mixed Vector-Scalar-Pseudoscalar Potentials for Fermions in 1+1 Dimensions

The problem of fermions in the presence of a pseudoscalar plus a mixing of vector and scalar potentials which have equal or opposite signs is investigated. We explore all the possible signs of the potentials and discuss their bound-state solutions for fermions and antifermions. The cases of mixed vector and scalar P\"{o}schl-Teller-like and pseudoscalar kink-like potentials, already analyzed in previous works, are obtained as particular cases

Remarks on Charged Vortices in the Maxwell-Chern-Simons Model

We study vortex-like configuration in Maxwell-Chern-Simons Electrodynamics. Attention is paid to the similarity it shares with the Nielsen-Olesen solutions at large distances. A magnetic symmetry between a point-like and an azimuthal-like current in this framework is also pointed out. Furthermore, we address the issue of a neutral and spinless particle interacting with a charged vortex, and obtain that the Aharonov-Casher-type phase depends upon mass and distance parameters.Comment: New refs. added. Version accepted for publication in Phys. Lett.

Remarks on supersymmetry of quantum systems with position-dependent effective masses

We apply the supersymmetry approach to one-dimensional quantum systems with spatially-dependent mass, by including their ordering ambiguities dependence. In this way we extend the results recently reported in the literature. Furthermore, we point out a connection between these systems and others with constant masses. This is done through convenient transformations in the coordinates and wavefunctions.Comment: 8 pages, 1 figur

Gis and Geomorfometry to Pedological Mapping.

This work applied a pedological mapping methodology, in an experimental center of ?APTA-Frutas? in Jundiaí, SP, using the geomorphometric parameters and GIS tools to elaborate pedologic maps. The aim of the work is show a methodology to obtain a preliminary legend of a soil map, it can guide the pedologists in the field works. The objective is compare the preliminary map with others maps made by tradicional pedological methodologies. The study area is located in a mountainous relief in the Atlantic Plateau. Is a small area with 59 hectares. The original soil map of the area was made in 1:10,000 scale in the detailed level. Was generated a digital elevation model (DEM) with 4 m of spatial resolution based in a topographical map in 1:10,000 scalle, the level curves are equidistant of 5m. Was used the TOPOGRID function with ArcInfo software. Based in the DEM are generated derivated maps like altitude, curvature and slope. Was generate a buffer around the hydrography to map hydromophic soils. Was generated frequency distribution graphics about altitude, curvature and slope maps. After interpretation of frequence distribution were defined classes to predict the soils types. The curvature map was divided in two classes intervals ( 0), the altitude map was divided in four classes intervals (690 ? 703, 704 ? 714, 715 ? 730, and 731 ? 757 m), the slope map was divided in four classes intervals (0 ? 9, 10 ? 19, 20 ? 44, and 45 ? 72 %). The maps were reclassified and converted to shapefiles. In the shape file format the function INTERSECT was applied in the maps. All shapefiles were intersected with the otherrs to generate the final preliminary soil map. This methodology presents in this work showed adequate to effect the preliminary mapping of some types of soils

Dinâmica da vegetação natural no nordeste do Estado de São Paulo, entre 1988 e 2003.

As imagens de sensoriamento remoto orbital juntamente com as ferramentas em Sistemas de Informações Geográficas têm possibilitado diversos estudos sobre as alterações na cobertura das terras. O objetivo deste trabalho foi detalhar os resultados do mapeamento de uso e cobertura das terras e alterações em uma região no Nordeste do Estado de São Paulo entre 1988 e 2003, especificamente em relação à vegetação natural. A avaliação da dinâmica das áreas de remanescentes de vegetação natural das terras revelou retração de 0,14% em relação à área total dos municípios (51.649,5 km2). Mas houve avanço da vegetação ripária de 0,22% em relação à área total. Dos 125 municípios da região em estudo e possuidores de remanescentes de vegetação natural, 60,8% mantiveram praticamente a mesma porcentagem de cobertura vegetal natural (florestas estacionais, secundárias, cerrado e vegetação ripária) em 2003 com relação a 1988. Considerando somente as áreas com floresta estacional, secundária e cerrado, o número de municípios cresce para 79,2% do total. Os municípios que mantiveram os maiores percentuais de cobertura vegetal natural de Floresta Estacional, Floresta Secundária e Cerrado no período foram: Águas da Prata, com 39,9% de sua área municipal total, Rifaina (31,7%), São Sebastião da Grama (24,9%) e Pedregulho (24,0%). A ocupação das terras de 1988 a 2003 caracterizou-se pela dinâmica de substituição entre atividades que competem por área no setor rural, comum nas regiões administrativas tecnicamente mais avançadas do Estado de São Paulo