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|Title:||Robust interval-based regulation for anaerobic digestion processes|
|Abstract:||Background: Risk factors for the hepatitis C virus (HCV) infection influence both the frequency and the progression of the liver disease. Routes of transmission and severity of the liver damage may differ by gender. We aimed to describe the risk factors for HCV infection and for the severity of the liver disease among women seroreactive to anti-HCV antibodies. Also, we tested the hypothesis that length of infection influences the levels of anti-HCV, in transfusion-associated hepatitis C. Methods: Eighty-six interferon-naive women, repeatedly seroreactive to anti-HCV antibodies, aged > 20 years, were studied. Results: Surgeries (80%) and transfusion before 1993 (58%) were the main risk factors (52% cases had both). The main reason for practicing surgery was obstetric/gynecologic (74%). The main indication for transfusion was also obstetric/gynecologic (68%). Fifty-five (64%) women were positive to HCV RNA in serum, of them, coinfection with the hepatitis B virus (HBV) occurred in three (5%) cases, being occult hepatitis B (i.e., positive to HBV DNA, but negative to hepatitis B surface antigen) in two (4%). In multivariate analysis, determining factors of cirrhosis at histologic examination were age and the antecedent of transfusion before 1993. Anti-HCV levels correlated with the elapsed time from transfusion to diagnosis, but not with age. Conclusion: An obstetric/gynecologic indication was the most frequent reason for both surgery and transfusion. Hepatitis B coinfection had a low prevalence and did not influence the severity of the liver disease, as age and the antecedent of transfusion certainly did. Infection length influenced the levels of anti-HCV antibodies in transfusion-associated hepatitis C. " 2006 Elsevier Ireland Ltd. All rights reserved.",,,,,,"10.1016/j.hepres.2006.06.012",,,"http://hdl.handle.net/20.500.12104/44344","http://www.scopus.com/inward/record.url?eid=2-s2.0-33749368713&partnerID=40&md5=961b436399eb1b5828ee88debcb1199b|
WOS",,,,,,"Cirrhosis; Hepatitis B; Hepatitis C; Liver; Serology; Test; Transfusion",,,,,,"Routes of infection and clinical outcome of Mexican women reactive to anti-hepatitis C virus antibodies",,"Article" "46085","123456789/35008",,"Alcaraz-González, V., INRA-LBE, Avenue des Etangs, 11100 Narbonne, France; Harmand, J., INRA-LBE, Avenue des Etangs, 11100 Narbonne, France; Rapaport, A., INRA-Biometrie, 2 Place Viala, 34060 Montpellier, France; Steyer, J.P., INRA-LBE, Avenue des Etangs, 11100 Narbonne, France; González-Álvarez, V., Department of Chemical Engineering, University of Guadalajara, M. García Barragan 1451, 44430 Guadalajara Jalisco, Mexico; Pelayo-Ortiz, C., Department of Chemical Engineering, University of Guadalajara, M. García Barragan 1451, 44430 Guadalajara Jalisco, Mexico",,"Alcaraz-Gonzalez, V.
Pelayo-Ortiz, C.",,"2005",,"A robust regulation law is applied to the stabilization of a class of biochemical reactors exhibiting partially known highly nonlinear dynamic behavior. An uncertain environment with the presence of unknown inputs is considered. Based on some structural and operational conditions, this regulation law is shown to exponentially stabilize the aforementioned bioreactors around a desired set-point. This approach is experimentally applied and validated on a pilot-scale (1 m3) anaerobic digestion process for the treatment of raw industrial wine distillery wastewater where the objective is the regulation of the chemical oxygen demand (COD) by using the dilution rate as the manipulated variable. Despite large disturbances on the input COD and state and parametric uncertainties, this regulation law gave excellent performances leading the output COD towards its set-point and keeping it inside a pre-specified interval. " IWA Publishing 2005.
|Appears in Collections:||Producción científica UdeG|
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