To minimize unwanted noise, the exhaust gas of high pressure and high temperature coming out of internal combustion engine passes through silencer. Various types of silencers like absorptive, reactive and resonating, perforated type are widely implemented in actual practice .perforated reactive mufflers have an effective damping capability. This paper deals with comparative structural analysis ...

Revision anterior cruciate ligament reconstruction has inherent technical challenges not encountered during primary reconstruction. Prior tunnel placement and tunnel lysis can significantly alter graft fixation, compromising patient outcome. Preoperative recognition of patients with existing tunnel overlap and severe tunnel lysis will allow appropriate surgical planning and patient counseling, ...

  Anatomical vascular variations are rare causes of carpal tunnel syndrome. An aberrant medial artery is the most common vascular variation, while an aberrant radial artery causing carpal tunnel syndrome is even more rare, with an incidence ranging less than 3%. This article reports a patient with compression of the median nerve at the carpal tunnel by an aberrant superficial branch of the radi...

This paper investigates the effects of a porous wall on development Tollmien–Schlichting (TS) waves propagating inside boundary layer. An experimental study performed in low-speed wind tunnel showed that microperforated panels over hollow chambers could promote laminar–turbulent transition. First, measurements streamwise evolution TS instabilities reveal greater amplification occurs perforated ...

In the process of the highway tunnel construction, the stability and the reliability of tunnel rock is an important guarantee to ensure safety construction. Tunnel surrounding rock deformation monitoring is an important method for obtaining information on surrounding rock and controlling tunnel stability in the period of construction. Forecasting deformation of surrounding rock is the key to es...

BACKGROUND Previous studies have shown that the carpal tunnel syndrome seems to occur more frequently in patients with diabetes mellitus and might be associated with the duration of diabetes mellitus, microvascular complications and degree of glycaemic control. Primary aim was to determine if type 2 diabetes can be identified as a risk factor for carpal tunnel syndrome after adjusting for possi...

PURPOSE To evaluate the extent of femoral tunnel widening after quadrupled hamstring anterior cruciate ligament reconstruction using femoral cross pin fixation in contrast to bioabsorbable screw fixation augmented with Endopearl. METHODS 16 patients underwent cross pin femoral fixation and the next 15 underwent bioabsorbable screw fixation augmented with Endopearl. The patients were evaluated...

Les périssodactyles hippomorphes (Mammalia) de l'Éocène inférieur du bassin Paris. (comprenant aujourd'hui les chevaux, rhinocéros et tapirs) apparaissent au début se dispersent rapidement dans tout l'hémisphère Nord. Leur origine géographique, probablement asiatique, ainsi que leur phylogénétique, est actuellement débattue. fossiles provenant d'Europe ont été peu étudiés depuis années 1960, no...

IMPORTANCE At the turn of the 21st century, studies evaluating the change in incidence of appendicitis over time have reported inconsistent findings. OBJECTIVES We compared the differences in the incidence of appendicitis derived from a pathology registry versus an administrative database in order to validate coding in administrative databases and establish temporal trends in the incidence of...