The objective of this work was to evaluate the utilization of different values of maximum crop evapotranspiration as irrigation trigger on growth, yield and yield components of potato, pear and apple plants. Experiments ...

This Thesis presents a distributed generation system, which works as a Microgrid, suitable to integrate alternative energy sources, using a high frequency AC link (HFAC) as a means of connecting sources and loads. The ...

In the last decade, disturbances in the electrical system have been increased, mainly due to proliferation of nonlinear loads. As a result harmonic distortion, voltage unbalance and frequency variations are becoming a ...

The present doctoral thesis concentrate efforts in the consolidation of the benefits introduced by the plug-in repetitive action in the performance of pulse-width modulated voltage source inverters. The work is focused in ...

The changes in the species composition, phytosociological structure and the growth dynamics (recruitment, mortality and dbh increment) have been studied in five permanent plots in a Mixed Araucaria Forest with different ...

The present work was developed with the objective of investigating the characteristics of bending of the wood of Sycamore (Platanus x acerifolia), açoita-cavalo (Luehea divaricata), and pecan (Carya illinoinensis) coming ...

It was carried an experiment, in the Fitotecnia Department of the Federal University of Santa Maria (UFSM) - RS, with objective to evaluate the nutritional quality of two species of grassy (Hordeum vulgare L. and Secale ...

Many biotechnological techniques have been formed by new tools to the study of medicinal plants and for the production of homogenous and productive biomass. This work aimed to examine aspects of morphogenesis and callogenesis ...

Several causes are pointed as responsible for the numbness in seeds of rice. The fenolic compounds have influence in the swinging between promoters and inhibitors of the germination of seeds, could represent an obstacle ...

The quality of red wine was evaluated relating the variation of meteorological conditions such as color quantification and phenolic compound. Red wines of the cultivars Vitis vinifera, Cabernet Sauvignon, Merlot and Tannat, ...