Model scale fire tests using wood cribs of different porosity in a ventilated tunnel are presented. The study focuses on the effect of air velocity on maximum Heat Release Rate (HRR) and fire growth rate. To study the influence of different parameters, free burn tests and fire tests inside a model-scale tunnel were performed. The tunnel was 10 m long, the widths used were 0.3 m, 0.45 m, and 0.6...

The current study compared tunnel diameter as an independent risk factor for fixation failure from the coracoid after transcoracoid coracoclavicular reconstruction. The effect of variation in coracoid size and scapular bone density on fixation failure was also studied. Sixty-two cadaveric scapulae were randomized into 1 of 4 groups: a control group with no coracoid hole, a group with a 4-mm tra...

The purpose of this study was to investigate whether the bone tunnel impaction technique performed by dilators could dwindle the tibial tunnel enlargement after anterior cruciate ligament (ACL) reconstruction with hamstring tendon using both extracortical suspensory fixation devices at femoral and tibial site. Thirty-one consecutive patients undergoing primary ACL reconstruction with the hamstr...

Aorta—right atrial tunnel is a rare congenital anomaly characterized by an extracardiac tunnel-like vascular communication arising from an aortic sinus and emptying into the right atrium (RA) (Fig. 1). We report the case of a 33-year-old man diagnosed following Streptococcus viridans endocarditis. The patient underwent successful surgical repair (Fig. 2). The proximal ostiumwas closed using a p...

The article presents current views about upper limb neuropathies, their treatment and clinical manifestations. The following conditions are described: carpal tunnel syndrome(CTS), cubital tunnel syndrome(CUTS), radial tunnel syndrome, and posterior nervus interosseus syndrome.

BACKGROUND Bone tunnel enlargement is a phenomenon present in all anterior cruciate ligament (ACL)- reconstruction techniques. It was hypothesized that press-fit fixation using a free autograft bone plug reduces the overall tunnel size in the tibial tunnel. METHODS In a prospective cohort study twelve patients who underwent primary ACL reconstruction using an autologous quadriceps tendon graf...

Purpose: To examine the effect of diverse incision techniques in carpal tunnel decompression on patients’ postoperative pain and degree of satisfaction. Materials and Methods: This study concerned 134 cases of 97 patients who were diagnosed with carpal tunnel syndrome from January 2010 to May 2012 and underwent carpal tunnel decompression surgery at our hospital. The average follow-up period wa...

Legend: O-CTR= open carpal tunnel release, E-CTR= endoscopic carpal tunnel release, CSA= cross sectional area, MN-UA: distance between the median nerve and ulnar neurovascular bundle, US= ultrasound, SD=standard deviation, p values < 0.05 were considered as statistically significant and are highlighted with bold. Table 1. Overview of the data from the preoperative ultrasound evaluation of the p...

An open-jet wind tunnel operating within an anechoic chamber was developed for the purpose of the study of V/STOL noise mechanisms. An existing low-speed conventional hardwalled wind tunnel was modified to operate as an open-jet tunnel; an anechoic chamber was then constructed around the test section. The resulting aerodynamic and acoustic characteristics of the tunnel are discussed. This work ...

Tunneling is commonly used in several transition mechanisms. Some of the mechanisms discover the tunnel endpoint automatically by their own means. This paper describes several tunnel discovery mechanisms for IPv6 traversal beyond IPv4 legacy networks and suggests a new mechanism by which the DHCPv4 server can automatically provide configuration information about IPv6-in-IPv4 tunnel. Dual stack ...