This article deals with the influence of porous media on Helical flows of Generalized Oldroyd-B b... more This article deals with the influence of porous media on Helical flows of Generalized Oldroyd-B between two infinite coaxial circular cylinders .The fractional derivative are modeled for this problem and studied by using finite Hankel and Laplace transforms .The velocity fields founded by using the fundamentals of the series form in terms of Mittag-leffler equation . The research focused on the parameters like (permeability parameter z ,fractional parameters(𛼠, ð›½) , relaxation ðœ†1 , retardation ðœ†2 , kinematic viscosity v , magnetic parameter M and time t) which effected on the velocity field u and w. MATHEMATICA package used to study and analyze the above variables by drawing many graphs .
Introduction: Coronavirus has caused more than a million deaths as of October 2020. Hospitals con... more Introduction: Coronavirus has caused more than a million deaths as of October 2020. Hospitals consider tracheostomy after the patient is virus negative, usually after 3 weeks. Prevalence and timing of tracheostomy and its impact on survival among COVID patients are unknown. Methods: A retrospective, single-center study of all patients with COVID-19 ARDS who underwent tracheostomy was conducted. Patients with age <18 and patients treated with ECMO were excluded. Duration of ventilation before tracheostomy was recorded. Clinical variables, outcome variables, and confounding variables were recorded and compared between patients with tracheostomy and without tracheostomy. The aim was to determine prevalence and timing of tracheostomy and its impact on clinical outcomes. Results: We found that tracheostomies were performed only in 21 out of 196 patients (10.8%). Tracheostomies were performed after 3 weeks on average (22.1 ± 7.5 days). Survival was significantly higher in patients who ...
This article deals with the influence of porous media on Helical flows of Generalized Oldroyd-B b... more This article deals with the influence of porous media on Helical flows of Generalized Oldroyd-B between two infinite coaxial circular cylinders .The fractional derivative are modeled for this problem and studied by using finite Hankel and Laplace transforms .The velocity fields founded by using the fundamentals of the series form in terms of Mittag-leffler equation . The research focused on the parameters like (permeability parameter z ,fractional parameters(𛼠, ð›½) , relaxation ðœ†1 , retardation ðœ†2 , kinematic viscosity v , magnetic parameter M and time t) which effected on the velocity field u and w. MATHEMATICA package used to study and analyze the above variables by drawing many graphs .
Introduction: Coronavirus has caused more than a million deaths as of October 2020. Hospitals con... more Introduction: Coronavirus has caused more than a million deaths as of October 2020. Hospitals consider tracheostomy after the patient is virus negative, usually after 3 weeks. Prevalence and timing of tracheostomy and its impact on survival among COVID patients are unknown. Methods: A retrospective, single-center study of all patients with COVID-19 ARDS who underwent tracheostomy was conducted. Patients with age <18 and patients treated with ECMO were excluded. Duration of ventilation before tracheostomy was recorded. Clinical variables, outcome variables, and confounding variables were recorded and compared between patients with tracheostomy and without tracheostomy. The aim was to determine prevalence and timing of tracheostomy and its impact on clinical outcomes. Results: We found that tracheostomies were performed only in 21 out of 196 patients (10.8%). Tracheostomies were performed after 3 weeks on average (22.1 ± 7.5 days). Survival was significantly higher in patients who ...
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