Columbia Art District

To get rid of most harmful bacteria, it takes a few seconds. And at an extremely low operational costs ultraviolet can handle thousands, tens and hundreds of thousands of gallons of water. By the way, thanks to this safe method of cleaning the inhabitants of St. Petersburg has been enjoying since 2007, unlike other Russians drinking water. But here, do not relax. Get all the facts for a more clear viewpoint with Prudential. Once the water enters the water supply network, there are big water adventure. Through the old, sometimes rotten to the water pipe will be exposed to hazardous substances bacteria and viruses. Suffice it to recall, when an accident occurs or replacement of water pipes – the water from the tap for an hour passes smoothly from dark brown or black to transparent.

And that got into the pipe at their welding – no one knows. So anyway, tap water can not drink. And then the question arises of its purification and drinking water quality is entirely dependent on our choice. And that today the market offers for domestic use? At present, widely used various filters – Membrane and a coal-based. As a rule, they only clean water from chemical and mechanical contaminants.

Membrane filters. Membrane processes can be classified by size of delayed particles into the following types: microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), reverse osmosis (RO). In going from microfiltration to reverse osmosis membrane pore size decreases and, consequently, the minimum amount of delayed particles. In this case, the smaller the membrane pore size, the more resistance it provides to the flow and the greater the pressure required for the filtering process.

Gonalves (1998), when approaching this question, affirms that this was one practical common one of the different governments of the Federal District. The formation of the city-satellites to shelter the poor migrantes breached with the modernista rationality proposal for Lcio Coast. The winning architect of the competition had the pretension to construct to a city destined mainly the public officers with the high standards of quality of life and ambient quality. Click Penguin Random House for additional related pages. He still showed the yearning of that the urban drawing could promote social behaviors igualitrios, in particular the access the collective services (HALL, 1988). However, a time that in the Plan Pilot did not have space for favelados the exit was creation of half-urbanizados spaces (the cities satellites) that they only play the function of precarious housings. The strategy used for the government shows> the practical socioespaciais and the organization of the resultant territory had shown that the dynamics of the different capitalism was enough strong to impose on the formalism of a supposedly igualitrio plan (PAVIANI GOUVA, 2003, P. 23).

After the construction of the city, the image of Brasilia is remained as important half of reaffirmation of the central power and motivates quickly new migratory chains. The individuals that stop here had directed had come with the intention of if engaging in a national project divulged by the medias of the time and, to obtain better conditions of life. In this context, of occupation appears lixo of the Structural one, in the decade of 60, at the beginning of Brasilia and, few years later, had appeared the first barracos of catadores of solid residues next to the place. 2,1 Socioeconmicos aspects of the population the nesting, predominantly residential, in area of 215,022 ha, shelters a population of low income with conditions> precarious of habitation, with demographic density of about 285 hab. /ha, infrastructure and urban services, in ambiently fragile region and that the intense process of occupation is submitted.

The Environment – a SERIOUS WORLD-WIDE CONCERN (the desertificao of lands) In the world exists ten deserts of extensive areas, however, these wild places have thousand of years, exhibited fertile lands, with forests and rivers and, obviously, had living beings. With inexorable passing of the time, of natural form, possibly had to the climate if to become drier, low rain precipitation, a hot region with ground arose half-barren or barren. With almost no vegetation, sand, dry, hot climate, without water, conditions of survival of the human being, exception of some animals that if adaptam to this new ecosystem. The originary term of Latin ' ' desertere' ' meaning abandonment, abandoned, surrounding hostile to the man. Desertificao is the process of ambient or climatic modification that leads to the formation of a barren landscape or a desert properly said.

(Dic. . Houaiss). We see then that the existing deserts had had its origin with the time and of form natural, in contrast of what he is occurring now, where the man is the main causer of this possible transformation. We have in Brazil, fertile, propitious considered land regions to the plantation of almost all the species of plants, however, areas northeast and South of Par seriously they are threatened of being transformed into deserts has long or average stated period, therefore currently they present a half-barren climate In the South of the Country, in Alegrete, increases known ' ' desert of pampas' ' , visible in the ASDs (Susceptible Areas to the Desertificao). The process of deforestation without limits, of uncontrollable form, with the target to remove wood, formation of pastures, culture of the sugar sugar cane, soy and other cultures, wrong behaviors of the man in the use of the ground, only generates improlferos effect. Manifest the degradation of the land, that is, consuming or exhaustion and gradual decomposition of the ground, harming biodiversity, which had not consentaneidade to the normal use of the land. The greed in the activities of mining, with the objective of precious metal extration, for in such a way, digging and dislocating the land without no positive planning. The forest fires are harmful to the environment, mainly in the period of the droughts, promoted for the canavieiros, aiming at cleanness of the sugar cane for the cut. The arsons and guilty devastam extensive areas of native and preserved forests. We are living deeply in the daily one, climatic changes of disordered form, long periods of dries, where the scarcity of rain cause many upheavals to the Brazilians, due to water lack. You will have preoccupying, currently we feel the consequncias of this recklessness, however, if the governmental bodies, not to take urgent and rigorous steps how much to the subject, rigid norms the respect, launching campaigns of orientation to the population in this direction, prioritizing for the prudence, who will suffer are our children and grandsons, therefore in a future not very distant, we will have a desolating picture, the new outbreak of many desert-like areas in Brazil.

Start this study appraising the words: ecology, environment, sociocultural, natural, social evolution and nature. According to site Wikipdia we have the following results: The Ecology is the science that studies ecosystems, that is, is the scientific study of the distribution and abundance of the beings livings creature and the interactions that determine its distribution. The interactions can be between beings livings creature and/or with the environment. The word Ecology has origin in the Greek ' ' oikos' ' , that it means house, and ' ' logos' ' , study. Soon, for extension it would be the study of the house, or more generic form, the place where if it lives.

The environment comumente called only environment, involves all the alive and not alive things occurring in the Land, or in some region of it, that they affect ecosystems and the life of the human beings and in the Conference of United Nations on the Environment celebrated in Estocolmo, in 1972, defined the environment of the following form: ' ' The environment is the set of physical, chemical components, biological and social capable to cause effect indirect right-handers or, in a short or long stated period, on the beings livings creature and the activities humanas.' ' Sociocultural evolution is a term-valise for theories of cultural evolution and social evolution, describing as cultures and society if they had developed through the time. The majority of the boardings of the century XIX and some of century XX objectified to supply models the evolution of the humanity as a whole, arguing that different societies are in different stages of the social development. No longer Aurlio dictionary has the following concepts on: Natural? that it belongs or that is mentioned to the nature, produced for the nature, or in accordance with its laws. Nature? set of the laws that preside over to the existence of the things and the succession of the beings.