The water is basic resource to the life, indispensable resource in the agriculture of familiar base, of average and wide it scales, and in almost all the productive processes. Suppliments of water demand are a continuous concern of the humanity, which had to the increasing population increase, the uncertainties of the climatic factors and the increasing hdrica pollution. In a devoid water region, the knowledge of the hidrolgicos processes is basic for the permanence and survival of the man in the field. With the increase of the population throughout the years, the gamma of uses of the water grew together with the relative restrictions to its quality. The uses of the water had evolved throughout the time, having involved the feeding and personal hygiene, agriculture, navigation, industrial production, cooling of thermoelectrial and nuclear plants and recreativas activities. The antrpicas actions have modified the climate in the most diverse regions of the world and many times the necessary conditions to maintenance of the life human being has been harmed. The awareness of the importance of the hdricos resources in the quality of life of the population comes originating increasing demands of information for the elaboration of projects, mainly in small hidrogrficas basins. The projects in these basins have attracted to the attention of researchers and borrowers of decision, since the data collected in these regions are valuable sources of information that could be used in bigger basins. The great variability of the hdrica availability, secular as in such a way space, standes out the necessity of permanent quantification of liquid discharges aiming at to the forecast of future outflows and the amounts of sediments produced for a rain event. The water availability in amount and quality for the diverse uses, in special the water for human supplying, is a concern of the humanity and the subject has been debated in diverse regions, mainly the half-barren ones.
The cycle of life of the products comes being studied in amplagama of organizacionais contexts, influencing, thus, the relations comerciaisentre exporting countries and import, having as concerns – of carterambiental – aspects that go since the productive process and its products, until I dare and its posterior discarding. This Technique also is> known as analise' ' of the cradle to tumulo' '. Today the organizations already had started to perceive the ACV as umaforte competitiveness tool and a differential for the detomadas processes of decisions, in the election of ambient pointers in projects and aid to aidentificar chances of improvements of the ambient aspects. In such a way, through the valuation and evaluation proposal pelametodologia of Evaluation of the Cycle of Life, it is possible to identify if one better produtotem ambient performance that another one, if an alteration in the product to still podegerar a great ambient impact or, which process of manufacture trazmaiores advantages to the end item. EVALUATION OF the LIFE CYCLE All the process of manufacture of some product produces algumimpacto ambient, due to the consumption of energy and necessary resources atmesmo of gases residue and, the emission generation effluent in general.
Esseimpacto can occur during the extration of used raw materials noprocesso of manufacture of the product, in ACV. The analysis of life cycle is one technique for evaluation dosaspectos ambient and of the potential impacts associates to a product, understanding stages that go since the withdrawal of the nature of the substances elementary cousins who enter in the productive system, disposio of the end item. The ACV if presents as an important tool to parasubsidiar the stages of the development of the product, the management of the production, ops-use, the logistic conventional and reversa, among others, from compilaode information and of the evaluations Techniques So that if it gives beginning to an Evaluation of Cycle of Life, elaborates umfluxograma of the process, specifying all the flows of materiale energy and enters and leaves the system.
Although entertainer, this number still is unacceptably high and is very far from the Objectives of Development of the Millenium to diminish the hunger for the half up to 2015. Women and children represent the biggest ratio of people suffering from chronic hunger. The high prices of foods the low income places poor families with bigger risk not to obtain to receive feeding adjusted for gestantes, babies and children. In fact, more than one tero of infantile mortality in the world is related to the inadequate nutrition. Something between 25% and 50% of harvest of the countries poor ruins or is contaminated by fungos plagues or, before arriving at the tables. In the year of 1976 then the 4 billion inhabitants consumed resources that the nature obtained to restitute, which is, the planet was in its break-even point.
This situation moved and currently 50% are consumed more than the telluric spare capacity and for 2030 a consumption 100% is projected superior. This reliable accomodation loan made by the nature the human beings will cost expensive if it will not be corrected, with reflected right-handers in the deterioration of the quality of life of the species. To turn itself to the break-even point it must be reduced the natural consumption of resources and services in 33%, but as to explain to the Africans and Asians who not they can have the standard of living of the first world? Sustainable agriculture is appearing as a solution to mitigate climatic changes, to reduce problems of public health and costs, to become the cities most inhabitable and to generate empregosem estagnadas economies. More promising and possible future Emum, poor countries that currently have food scarcity could pass if to feed and to generate excesses to help other countries. The food production is inserted in the nature and is agent of its resetting. The agricultural activity almost always blossoms for the deforestation of forests.