Quintic B-Spline Method for Solving Sharma Tasso Oliver Equation

When analysing the thermal conductivity of magnetic fluids, the traditional Sharma-Tasso-Olver (STO) equation is crucial. The Sharma-Tasso-Olive equation’s approximate solution is the primary goal of this work. The quintic B-spline collocation method is used for solving such nonlinear partial differential equations. The developed plan uses the collocation approach and finite difference method to solve the problem under consideration. The given problem is discretized in both time and space directions. Forward difference formula is used for temporal discretization. Collocation method is used for spatial discretization. Additionally, by using Von Neumann stability analysis, it is demonstrated that the devised scheme is stable and convergent with regard to time. Examining two analytical approaches to show the effectiveness and performance of our approximate solution.

Bronchotomy as a Safe and Feasible Alternative to Failed Bronchoscopic Removal of Foreign Body Inhalation in Pediatrics. A Seven-Year Review

Background: Aspiration of foreign body is popular in pediatric age group and is considered as an important cause of respiratory distress and chocking in these children. Management strategies are different according to the mode of presentation. This study aims to assess the efficacy of rigid bronchoscopy and the role of bronchotomy as a safe alternative for failed removal of inhaled foreign body. Methods: We enrolled 254 patients with foreign body aspiration (FBA) up to 14 years old in a retrospective observational study. Our patients were reviewed from the Cardiothoracic Surgery Department and cases referred from Otorhinolaryngology Department, Menoufia University Hospital between June 2010 and July 2017. Using jet ventilation technique, foreign body was removed by the rigid bronchoscopy with either extracting forceps or postural drainage. Surgical interference such as bronchotomy needed in distally impacted foreign bodies (FBs). Results: Our study included 254 patients prepared for bronchoscopic FBs extraction. Most of cases (68.8%) presented early within first week (174 cases). No FBs detected in 44 cases by rigid bronchoscopy, although it was successful in 176 (69.5%) cases with non- impacted inhaled FBs. 14 cases only needed postural drainage due to inaccessible FBs, another 12 cases failed to extract FB with rigid bronchoscopy but they were managed with flexible bronchoscopy. Bronchotomy was needed for impacted FBs in eight cases (3%). Conclusion: This study’s findings support that rigid bronchoscopy is the gold standard in the diagnosis and removal of foreign body aspirations in pediatrics, but rigid bronchoscopy demonstrated less capability in the diagnosis and removal of small distally located foreign bodies. Bronchotomy is safe and effective alternative.

Influence of light pattern thickness on the manipulation of dielectric microparticles by optoelectronic tweezers

Optoelectronic tweezer(OET) is a useful optical micromanipulation technology that has been demonstrated for various applications in electrical engineering and most notably cell selection for biomedical engineering. In this work, we studied the use of light patterns with different shapes and thicknesses to manipulate dielectric microparticles with OET. It was demonstrated that the maximum velocities of the microparticles increase to a peak and then gradually decrease as the light pattern’s thickness increases. Numerical simulations were run to clarify the underlying physical mechanisms, and it was found that the observed phenomenon is due to the co-influence of horizontal and vertical dielectrophoresis forces related to the light pattern’s thickness. Further experiments were run on light patterns with different shapes and objects with different sizes and structures. The experimental results indicate that the physical mechanism elucidated in this research is an important one that applies to different light pattern shapes and different objects, which is useful for enabling users to optimize OET settings for future micromanipulation applications.