Flores-Estrella R.,Autonomous University of San Luis Potosi |
Quiroz G.,Autonomous University of Nuevo León |
Mendez-Acosta H.O.,Centro Universitario Of Ciencias Exactas genierias Cucei |
Femat R.,Autonomous University of San Luis Potosi
Industrial and Engineering Chemistry Research | Year: 2013
A robust H∞ controller has been developed to regulate the chemical oxygen demand in an anaerobic digester from the winery industry. A sensitivity analysis was performed, and the parameter set having the most significant effect on the process behavior was identified. The parameters inducing the most sensitivity in the solutions were selected as uncertain; in addition, they were related to kinetic terms and he hydrodynamic regime. Then, a control problem was formulated as robust regulation, and a controller was designed using H∞ theory to ensure robust stability. The actions of the H∞ controller are illustrated through numerical simulations. The controller was found to execute robust regulation facing parametric uncertainties and load disturbances. © 2013 American Chemical Society.
Noe R.E.A.,Centro Universitario Of Ciencias Exactas genierias Cucei |
Guadalupe H.M.P.,Centro Universitario Of Ciencias Exactas genierias Cucei |
Israel N.G.,Centro Universitario Of Ciencias Exactas genierias Cucei |
Ricardo G.P.C.,Centro Universitario Of Ciencias Exactas genierias Cucei |
Denise C.A.F.,Centro Universitario Of Ciencias Exactas genierias Cucei
Enfermedades Infecciosas y Microbiologia | Year: 2013
The origin of human immunodeficiency virus type 1 (HIV-1) has been controversial and interesting since the disease was identified in the early 80s. It dates back to human transmission of retroviruses that infect populations of chimpanzees in central Africa about 100 years ago. The intensive research conducted allows us to have an antiretroviral regimen, while it cannot eradicate HIV infection, remains suppressed viral replication, increases the number of CD4 +. decrease morbidity and mortality, improve quality of life and prevent sexual transmission of HIV. However, not is possible to understand these phenomena without detailed knowledge of the biology of HIV-1 and the mechanisms that have been selected in this amazing agent to infect a cell key and CD4 + T lymphocyte and evade the immune response. So in this study we reviewed the literature on structural-morphological characteristics, life cycle, antiretroviral treatment and some laboratory methods for the detection and interpretation of resistance of HIV-1 resistance.