a computational optimization was performed for a direct-injection diesel engine using three-dimensional modeling. fully transient cfd analyses of different valve profile strategies for the intake and compression strokes were performed to evaluate the effects on both engine performance and in-cylinder flow-field evolution. the turbulence model was used along with the second order linear upwind s...

Introduction: Maxillary sinus lift combined with implant placement without grafting allows bone formation in the sinus. However, bone volume in severely atrophic maxilla is often insufficient to ensure initial stability of implants. The purpose of this study was to evaluate the outcome of maxillary sinus augmentation by graft-free two-stage sinus lift using titanium bone fixation device and imp...

OBJECTIVE To identify whether the deep-plane face-lift or the extended transtemporal subperiosteal midface-lift is more effective in correcting midfacial ptosis. METHODS Five cadaveric dissections were performed with a unilateral transtemporal subperiosteal midface-lift followed by a deep-plane face-lift on the same hemihead. Three suspension sutures were evaluated-transtemporal midface-lift,...

Hydrodynamic lift forces offer a convenient way to manipulate particles in microfluidic applications, but there is little quantitative information on how non-inertial lift mechanisms act and compete with each other in the confined space of microfluidic channels. This paper reports measurements of lift forces on nearly spherical drops and bubbles, with diameters from one quarter to one half of t...

BACKGROUND Although early secondary face lift is a highly scrutinized procedure, it is beneficial for a select group of patients. Justification for performing the early secondary face lift or staged face lift is more apparent when considering the biomechanical limitations of the primary face lift. METHODS All patients undergoing primary face-lift procedures performed by the senior author (T.A...

AIM: to estimate the outcomes after fistula laser coagulation for transsphincteric anal fistulas. PATIENTS AND METHODS: a prospective randomized single-center study included 42 patients with fistulas, 36 (85.7%) of them had follow-up > 3 months. Nineteen were group thermocoagulation track (diode 1560 nm) combined ligation intersphincteric (LC + LIFT). Seventeen closure internal opening by ad...