The present work proposed a new method for the modeling by the finite element method of the acoustic propagation problems in infinite axisymmetric cylindrical guides lined with locally reacting absorbent materials wit...The present work proposed a new method for the modeling by the finite element method of the acoustic propagation problems in infinite axisymmetric cylindrical guides lined with locally reacting absorbent materials without flow. The method deals with the development of an efficient transparent boundary condition based on DtN operators. The method developed in this study is successfully applied to a straight axisymmetric lined guide by imposing a mode on one of the artificial boundaries of the truncated guide. The results are in good agreement with analytical solutions. Applying the method for a non-uniform axisymmetric lined guide which is a complex case, proved its effectiveness and the results compared to those of PML layers are in very good agreement.展开更多
Objective: To study the diagnostic, etiological, therapeutic and evolutionary aspects of patients received at the Sylvanus Olympio Hospital in Lomé for venous priapism. Patients and Methods: A cross sectional stu...Objective: To study the diagnostic, etiological, therapeutic and evolutionary aspects of patients received at the Sylvanus Olympio Hospital in Lomé for venous priapism. Patients and Methods: A cross sectional study, over 5 years (2012-2016), of 27 cases of low flow priapism treated at the Chu Sylvanus Olympio in Lomé. Results: The mean age of the patients was 28.14 years ± 8.6. The average time of consultation was 106 hours (04 days 10 hours) ± 208.02. In our study, 4 (14.81%) patients consulted before the 6th hour and 20 (74%) patients consulted after the 24th hour. The blood count required in all patients revealed a case of chronic myeloid leukemia. Hemoglobin electrophoresis resulted in 23 (85.1%) cases of sickle cell disease. The management was medico-surgical. After an average follow-up of 11 months, erectile function was evaluated in 18 patients, and erectile dysfunction was noted in 10 (55.5%) patients.展开更多
文摘The present work proposed a new method for the modeling by the finite element method of the acoustic propagation problems in infinite axisymmetric cylindrical guides lined with locally reacting absorbent materials without flow. The method deals with the development of an efficient transparent boundary condition based on DtN operators. The method developed in this study is successfully applied to a straight axisymmetric lined guide by imposing a mode on one of the artificial boundaries of the truncated guide. The results are in good agreement with analytical solutions. Applying the method for a non-uniform axisymmetric lined guide which is a complex case, proved its effectiveness and the results compared to those of PML layers are in very good agreement.
文摘Objective: To study the diagnostic, etiological, therapeutic and evolutionary aspects of patients received at the Sylvanus Olympio Hospital in Lomé for venous priapism. Patients and Methods: A cross sectional study, over 5 years (2012-2016), of 27 cases of low flow priapism treated at the Chu Sylvanus Olympio in Lomé. Results: The mean age of the patients was 28.14 years ± 8.6. The average time of consultation was 106 hours (04 days 10 hours) ± 208.02. In our study, 4 (14.81%) patients consulted before the 6th hour and 20 (74%) patients consulted after the 24th hour. The blood count required in all patients revealed a case of chronic myeloid leukemia. Hemoglobin electrophoresis resulted in 23 (85.1%) cases of sickle cell disease. The management was medico-surgical. After an average follow-up of 11 months, erectile function was evaluated in 18 patients, and erectile dysfunction was noted in 10 (55.5%) patients.
