Simultaneous Equations
Mostrando 13-24 de 66 artigos, teses e dissertações.
-
13. Dynamic optimization of a FCC converter unit: numerical analysis
Fluidized-bed Catalytic Cracking (FCC) is a process subject to frequent variations in the operating conditions (including feed quality and feed rate). The production objectives usually are the maximization of LPG and gasoline production. This fact makes the FCC converter unit an excellent opportunity for real-time optimization. The present work aims to apply
Brazilian Journal of Chemical Engineering. Publicado em: 2011-03
-
14. Development and validation of spectroscopic methods for simultaneous estimation and dissolution of ofloxacin and ornidazole in tablet dosage forms
The aim of this work was to develop and validate simple, accurate and precise spectroscopic methods (multicomponent, dual wavelength and simultaneous equations) for the simultaneous estimation and dissolution testing of ofloxacin and ornidazole tablet dosage forms. The medium of dissolution used was 900 ml of 0.01N HCl, using a paddle apparatus at a stirring
Eclética Química. Publicado em: 2010-09
-
15. A simple model for circadian timing by mammals
Circadian timing is structured in such a way as to receive information from the external and internal environments, and its function is the timing organization of the physiological and behavioral processes in a circadian pattern. In mammals, the circadian timing system consists of a group of structures, which includes the suprachiasmatic nucleus (SCN), the i
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-01
-
16. Determinantes da Composição do Endividamento das Empresas Brasileiras: a consideração da maturidade e da fonte de financiamento
In corporate finance field, there is a vast literature about the capital structure determinants. However, studies have focused on the differences between equity and debt, while the literature about debt structure (maturity and source) is relatively scarce. As such, this study aims to promote empirical research about characteristics that influence debt maturi
Publicado em: 2009
-
17. Simultaneous heat and mass transfer in packed bed brying of seeds having a mucilage coating
The simultaneous heat and mass transfer between fluid phase and seeds having a mucilaginous coating was studied during packed bed drying. To describe the process, a two-phase model approach was employed, in which the effects of bed shrinkage and nonconstant physical properties were considered. The model took into account bed contraction by employing moving c
Brazilian Journal of Chemical Engineering. Publicado em: 2008-03
-
18. Eficiência e precisão no cálculo de iluminação por radiosidade com GPUs
This work consists of a study about the global illumination model known as radiosity, in an effort to achieve an efficient implementation on modern hardware. Radiosity is a classic and very important method in computer graphics. It is the first proposed method to achieve photo-realism as it considers interactions among the objects of the scene. As the method
Publicado em: 2008
-
19. Simulation software development for multibody systems / Desenvolvimento de uma ferramenta computacional para simulação de sistemas mecânicos multicorpos
The mathematical simulation is a very important tool to reduce production costs in new projects of agricultural machines. This work consists of a simulation software development for multibody systems (MBS), called FSSM (tool for simulation of mechanical systems), with appropriate functionalities for manufacturers of agricultural machines, using the AutoCAD g
Publicado em: 2008
-
20. O mercado de câmbio e a taxa de câmbio na economia brasileira: 1999 a 2007 / The market exchange and the exchange rate in Brazilian economy: 1999 the 2007
The process of commercial opening and flexible of capital account, started in the 1990s, ally to the adoption of a regimen of floating change, since of January of 1999 and transformed the tax of change in one of the main Brazilian economic variables. Faced with that, this work analyzed the impacts of variations in the tax of change on the other economic vari
Publicado em: 2008
-
21. Simulation of NaCl and KCl mass transfer during salting of Prato cheese in brine with agitation: a numerical solution
The association of dietary NaCl with arterial hypertension has led to a reduction in the levels of this salt in cheeses. For salting, KCl has been used as a partial substitute for NaCl, which cannot be completely substituted without affecting product acceptability. In this study a sensorially adequate saline solution (NaCl/KCl) was simultaneously diffused du
Brazilian Journal of Chemical Engineering. Publicado em: 2007-09
-
22. Agricultural production function and total factor productivity Brazil, 1995-96 / Função de produção para a agricultura e produtividade total dos fatores Brasil, 1995-96
Using data from the Agricultural Census of 1995-96 and the Demographic Censuses of 1991 and 2000, this dissertation first estimate a Cobb-Douglas production function. The value of production is calculated in order to control the effect of regional prices. Traditional factors (labor, land, fertilizers and capital) and human capital (years of schooling and mar
Publicado em: 2007
-
23. BenefÃcios Sociais da PolÃtica de Incentivo à Cultura do MamÃo no Estado do Cearà / Social benefits of Incentive Policy related to Papaya crop in the State of CearÃ
The objective of this study is to analyze it benefit social generated by the Government s incentives of Cearà to the producing of papaya of the State, in the period from 2001 to 2006, considering as theoretical base the models of simultaneous equations and of approach of Marshall s economical surplus. For so much, a series of annual data was used, considere
Publicado em: 2007
-
24. Sistema multi-usuário de gestão de recursos hídricos / Multi-user system for water resources management
It is necessary more accurate and reliable information on the water resources, in real time, in order to allow the anticipation of necessary actions to the management process. Therefore, structuring integrated databases is essential for evaluation of water resources, simulation of the effects of receptions on water availability in sections to downstream and
Publicado em: 2006