Medial Sural Artery Perforator Flap for Head and Neck Reconstruction.

Aim: The aim is to study the assessment of feasibility of medial sural artery perforator (MSAP) free flap for head and neck reconstruction at our center.

Materials And Methods: Oral cancer patients with squamous cell carcinoma of the tongue, buccal mucosa, and floor of mouth cancer attending our center were reconstructed using MSAP flap after oncologic resection. Handheld 8 MHz Doppler was used to identify the perforator preoperatively.

Numerical simulation of a fully baffled biological reactor: the differential circumferential averaging mixing plane approach.

A modified mixing plane approach for steady state simulation of flow field in fully baffled biological reactor is presented and discussed. Without requiring any experimental input, this approach of dividing the vessel into suitable number of connected and disconnected zones; solving steady state equation separately in each zone and then transferring information between them, provides a computationally less intensive alternative for simulating the flow in the whole vessel. Impeller used is the standard Rushton Turbine positioned at mid-height of the reactor and simulations are carried out using standard k-epsilon turbulence model implemented in CFD code FLUENT.