Irreversibility
Mostrando 13-24 de 75 artigos, teses e dissertações.
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13. Hydrogen from biomass gas steam reforming for low temperature fuel cell: energy and exergy analysis
This work presents a method to analyze hydrogen production by biomass gasification, as well as electric power generation in small scale fuel cells. The proposed methodology is the thermodynamic modeling of a reaction system for the conversion of methane and carbon monoxide (steam reforming), as well as the energy balance of gaseous flow purification in PSA (
Brazilian Journal of Chemical Engineering. Publicado em: 2009-03
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14. O conceito de Morte e a síndrome de Asperger / The Concept of Death and Aspergers Disorder
Aspergers Disorder, a Pervasive Development Disorder, is part of the autism spectrum and is characterized by difficulties in communication, abstraction, and social interaction. The concept of death is acquired in parallel with cognitive and affective development of children, and three stages in its development are described in parallel with piagetian stages.
Publicado em: 2008
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15. Polarographic study and electrode kinetics of [Zn(II) - antibiotics - cephaloglycin] system vis a vis kinetics of electrode reactions
Electrode kinetics and complex formation of Zn(II) using doxycycline, chlortetracycline, oxytetracycline, tetracycline, minocycline, amoxicillin, chloramphenicol and cephaloglycin were reported at pH = 7.30 ± 0.01 in = 1.0 molL-1 NaClO4 used as supporting electrolyte at 25.0°C. Kinetic parameters viz. transfer coefficient (α), degree of irreversibility (�
Eclética Química. Publicado em: 2008
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16. Transição ordem-desordem da matéria de vórtices em supercondutores detectada através do terceiro harmônico da suscetibilidade AC
Although a vortex state, in type II superconductors, has been anticipated more than 50 years ago, a great deal of theoretical and experimental efforts has still been done in an attempt to investigate how the dynamics of these structures depends on external excitations and on the inherent properties of the underlying superconducting material, such as inhomoge
Publicado em: 2008
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17. Astucias de uma professora alfabetizadora : um estudo de caso sobre a alfabetização e os usos dos tempos em uma sala de aula / Cunning of teacher to literacy : studing about read and write and the usage of time in classrom
This study is about a PhD research (FE/UNICAMP) done in order to understand how na experienced teacher, who works with alphabetization, 62 years old and 47 years of practice, deals with the teaching relations and organizes the uses from the school times for doing it. The research is characterizes by a qualitative approach based on a ethnographic investigatio
Publicado em: 2008
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18. Exergetic and economic analysis of an industrial distillation column
In this work, applications of exergy and economic concepts to compression, heat exchange, and separation processes were used for calculation of the irreversibility rate, thermodynamic efficiency, and internal rate of return (IRR) of the profitability. A case study based on a real process, the purification of 1,2-dichloroethane (DCE) in a high-purity distilla
Brazilian Journal of Chemical Engineering. Publicado em: 2007-09
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19. Irreversibilidad y pluralismo ontológico
The problem of irreversibility finds its roots at the end of 19th century and the beginning of 20th century with the works of Maxwell, Boltzmann and Gibbs. The controversy arises when trying to make compatible the irreversible macroscopic evolution of thermodynamics systems with t-invariant dynamics of its microscopic components. In the traditional approach
Scientiae Studia. Publicado em: 2007-06
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20. Efeitos imediatos da sentença e as conseqüências práticas irreversíveis
The work aims to deffend the need and importance of using the process technique that excludes the suspending effect of the appeal, as a rule, so that the effects of the sentence are produced immediately. The already mentioned process technique intends to make the process more effective, so it can reach its purpose. The mechanism will make the process faster
Publicado em: 2007
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21. Exergy analysis of thermal systems in a pulp and paper production process. / Análise exergética dos sistemas térmicos em um processo de produção de celulose e papel.
This work presents a comparative evaluation from thermodynamic performance view of thermal systems in a Kraft pulp and paper mill. The design information and the data of the industrial operation were collected for the current utility system and for the new system that has been buit. The exergy analysis is applied as the quantitative and qualitative evaluatio
Publicado em: 2007
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22. Electrochemical study and dependence of 'transition state' in Co(II) and Ni(II) complexes with some antibiotics and cephalothin
Electrode kinetics and study of 'transition state' with applied potential in case of [M - antibiotics - cephalothin] system were reported at pH = 7.30 ± 0.01 at suitable supporting electrolyte at 25.0ºC. The M = Co or Ni and antibiotics were doxycycline, chlortetracycline, oxytetracycline, tetracycline, minocycline, amoxicillin and chloramphenicol used as
Eclética Química. Publicado em: 2007
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23. EmoÃÃes e estratÃgias de coping frente à morte de crianÃas em situaÃÃo de rua e de nÃvel socioeconÃmico mÃdio / Emotions and coping estrategies concerning death in street children and from the middle socioeconomic class
The objective of this research is to investigate the emotions and coping strategies concerning death in street children and children from the middle socioeconomic class (MSEC), aged 7 to 12, considering the influence of age, gender, and schooling. The concept of biological death is seen as complex, multidimensional, covering ideas such as universality, non-f
Publicado em: 2007
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24. Schistosomal granuloma as a system adaptive complex. Application of fractal dimension in characterization of their geometric properties. / Granuloma esquistossomótico como um sistema adaptativo complexo. Aplicação da dimensão fractal na caracterização de suas propriedades geométricas.
Schistosomal granuloma AS A COMPLEX ADAPTIVE SYSTEM: APPLICATION OF FRACTAL DIMENSION IN THE CHARACTERIZATION OF PROPERTIES GEOMETRIC. Waldemiro de Souza Romagna. [Introduction]. The schistosomal granuloma is a compact, organized collection of migrating cells, which along with cells of the affected organ, arrange themselves in the midst of extracellular matr
Publicado em: 2007