Posts Tagged ‘art and science’

Vapor Generators

Monday, November 27th, 2017

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Study of Queima of the Mineral Coal in Furnaces of Vapor Generators Tdni de Abreu Goulart) Summary the furnace is the component of generating unit of destined vapor to convert the chemical energy of the fuel into thermal energy. In accordance with the type of the fuel, the projects of current furnaces have if alternated between furnaces for burning in suspension, it burns in grate or it burns in fluidizado stream bed. The furnaces of burning in suspension have more including application, mainly for allowing to burning of oil, coal sprayed, or same natural gas. The sprayed coal always if has presented as an advantageous alternative for use in the field of the termoeletricidade. The use of sprayed coal demands some cares special with the stability of flame and its preparation, involving the job of transporting mats, silos, mills and complementary systems of operation. The furnaces adapted with grates or fluidizado stream bed have restricted application the unit of small or average transport and are projected for the solid fuel consumption. The raised leached ashes text of great part of the reserves of fossil coal, together with other less noble fuels, has justified the application of furnaces of fluidizado stream bed, or the adoption of other alternative processes of direct combustion.

This work has the objective to revise these processes of burning and, of this form, to analyze possible adjustments for improvement of the efficiency of the one of the furnace in the direction of if adjusting to the necessities of each particular project in and making possible the burning of the abundant fuel in the south region of Brazil that is the mineral coal. Word-key: Coal, Combustion, Burn, Furnaces. Abstract The furnace is the component of the steam generator that converts chemical energy into thermal energy. According you the type of fuel, to boiler design must be chosen among burning in suspension, grid burning and fluidized bed burning.

HIV And Genetics

Saturday, May 6th, 2017

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Introduction If the HIV is an alive being must obey the Theory of the evolution or this is needing a revision the modern synthetic Theory of the evolution Here part of the principle that is adjusted and looks for to explain the existence of the HIV in base of the evolution. 2.0) Theoretical Referencial 2,1) the environment and the HIV Between individuals HIV inside of a population, that is, inside of a delimited space as the plasma of human one to be contaminated with HIV. 2.2) The HIV and the Theory of Darwin Apresenta a variation in morphology, physiology and behavior. Its children resemble its genitors more than if he resembles the not related individuals, thus one vrion of HIV if he resembles more between itself of what he compares with the adenovirus of the mosquito of the affection, thus is perceived for deduction that presents some similarity. Some forms, what it must be reflected, that has more possibility of survival and reproduction that other forms in determined surrounding. In the case of the HIV for the increasing mortality that is observed, and a great one variability that is observed, the election process is occurring with great force for adaptation of the HIV in the man. Thus to understand the adaptation of the HIV of the chimpanzee it must perceive that the individual level occurs but reaching many because it has that to reach a collective of the entire population of the HIV. A related site: James A. Levine, M.D. mentions similar findings. Therefore to affirm that the HIV is mutant these changes you inherited occur the individual level of inheritance and development and reaches a population that lives pressured in a way, that is the proper man, place where the conditions favorable to the well complex development coexist, dispendioso and ample but to understand the reason of the ample variability of the HIV it must study the filogenia and of history.. might disagree with that approach.