2011

The objective of this paper is to analyze consumers' perceptions about risk and quality attributes of food consumption; and to evaluate the incidence of these factors when buying organic products in the Argentinean domestic market. Data derives from a food…

Com o objetivo de avaliar a acumulação de matéria seca pelo guaranazeiro (Paullinia cupana var. Sorbilis (Mart.) (Ducke), foi conduzido um experimento em Presidente Figueiredo/AM, em Latossolo Amarelo Distrófico, com delineamento blocos casualizados, 12 tratamentos (época de amostragem) e 3…

Conhecer a taxa de acumulação dos nutrientes pelo cafeeiro conilon é fundamental ao manejo da adubação, visando à máxima eficiência de utilização dos fertilizantes, reduzir os custos de produção e tornar o sistema sustentável; principalmente em lavouras fertirrigadas. Assim, com…

To successfully substitute sucrose for sweeteners, further studiesmust be carried out based on previous knowledge of sweetener concentration to determine the equivalent sweetness of such compounds. In this work, sweetness equivalence of strawberry-flavored yogurt with different sweeteners and/or their combinations…

Hydroelectric reservoirs can release significant quantities of CO2, but very few results are available from the tropics. The objective of the present study was to estimate the emission of CO2 from the Balbina hydroelectric reservoir in the central Brazilian Amazon.…

Four-Wave Mixing (FWM) in semiconductor optical amplifiers is an attrative mechanism for wavelenght coversion in wavelenght-division multiplexed (WDM) systems since it provides modulation format and bit rate transparency over wide tuning ranges. A series of systems experiments evaluating several aspects…

In the past the reliability of the telecommunication systems was evaluated on the simple assumption of the independence of elements. Comuputation of steady - state series - system availability depends on specific assumptions made about the non failed items during…

The contribution deals with the use of computers in the technical subject teaching. It shows more common view on the possibilities of the computer use. It also shows that there is a lin to concrete conditions of the use of…

Energy saving effects connected with use of energy accumulator on board of tram vehicle instead of substation are presented. Differences in results regarding weak and strong power supply system when taking into account energy losses and energy recuperation are pointed…