Knowledge of the distribution total phosphorus (P) content in native soils provides information on management ecosystem, land capability for agriculture, environmental quality, and biodiversity conservation. We mapped spatial P concentrations topsoils (0-30 cm) uncultivated (native) areas Brazil. obtained data southern, south-eastern, north-eastern regions from reports exploratory projects deve...

Tomato, the edible berry of plant tomatoes (Solanum lycopersicum L.) is currently one most widely used crops worldwide. Tomatoes are considered to be popular vegetables, although, from a botanical point view, it fruit. It rich source numerous important bioactive substances that have positive effect on human health. Antioxidant compounds tomatoes, with their protective properties, significant ox...

This paper presents the overall evaluation of the Quantitative Evaluation Framework (QEF) approach which has been applied in an operational teaching environment for the last six years. During this period we have evaluated the difference between educational software systems that were developed using the Techno-Didactical Extension for Instruction/Learning Based on Computer (X-TEC) model and educ...

[1] The short-term relationship between equatorial ionosphere and geomagnetic activity is examined. Hourly averages of the total electron content (TEC) and critical frequency of the F2 layer (foF2) are compared with the Dst index, a proxy for equatorial geomagnetic activity, at three local times (0700–0800, 1200–1300, and 1600–1700 LT) from March 1998 to August 1999. Owing to the geomagnetic la...

In epidemiological studies there exists the evidence of relationship between socio-economic status (SES) and health. The suspicious cause of these differences is life-style. The aim of the presented study was to identify the relationship between SES, demographic characteristics and the life-style in an industrial region. A structured questionnaire was distributed to a random sample of some 3,00...