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Numerical and experimental analysis of the resin transfer molding process
Mohamed Hattabi,Jamal Echaabi,Mohamed Ouadi Bensalah 한국유변학회 2008 Korea-Australia rheology journal Vol.20 No.1
The objective of this work is to propose a procedure to simulate the flow in the LCM (Liquid Composites Molding) processes by finite difference discretization in a curvilinear coordinate system adapted to the shape of the saturated zone. The numerical results obtained are compared with experimental results obtained by an experimental device elaborated at our laboratory. It allows to realize linear and radial injections for different porosities and to observe the flow front kinetics. Numerical and experimental results are then compared with those of the literatures and excellent agreements are noticed. Finally, we suggest a concept of the capillary number to explain the variations of the permeability obtained for pressure values lower than 0.25 Bar.
Numerical and experimental analysis of the resin transfer molding process
Hattabi, Mohamed,Echaabi, Jamal,Bensalah, Mohamed Ouadi The Korean Society of Rheology 2008 Korea-Australia rheology journal Vol.20 No.1
The objective of this work is to propose a procedure to simulate the flow in the LCM (Liquid Composites Molding) processes by finite difference discretization in a curvilinear coordinate system adapted to the shape of the saturated zone. The numerical results obtained are compared with experimental results obtained by an experimental device elaborated at our laboratory. It allows to realize linear and radial injections for different porosities and to observe the flow front kinetics. Numerical and experimental results are then compared with those of the literatures and excellent agreements are noticed. Finally, we suggest a concept of the capillary number to explain the variations of the permeability obtained for pressure values lower than 0.25 Bar.
Disseminated Cryptococcosis Incorrectly Managed: a Case Report
Adil Maleb,Aziza Hami,Yassine Ben Lahlou,Somiya Lamrabat,Safaa Rifai,Nawal Rahmani,Mohammed Bensalah,Mohammed Frikh,Abdelhay Lemnouer,Mostafa Elouennass 대한의진균학회 2019 대한의진균학회지 Vol.24 No.1
Disseminated cryptococcosis is a rare fungal infection, which mainly occurs in immunocompromised patients, and the diagnosis is difficult. Therefore, it is less likely to be considered in immunocompetent patients. Here, we present a case of fatal cryptococcal infection of the pleural fluid and ascites in a patient seronegative for HIV. The patient was a 45-year old man who was followed for Crohn's disease and treated with steroids and an immunosuppressant (azathioprine). The culture of pleural and ascites fluids showed the presence of yeasts colonies identified as Cryptococcus neoformans. Bacteriological examination of the blood culture or cerebrospinal fluid (CSF) was not prescribed. The HIV serology was negative. At the fourth day of treatment, the patient died because of the deterioration of neurological and hepatocellular functions. The main diagnostic problems that led to this fatal outcome were non-suspicion of an at-risk patient, lack of microbiological analysis of the blood or CSF, and inadequate antifungal therapy.