The present work is dedicated to the determination of Gurney velocity unconventional aluminum-water explosive. paper presents experimental arrangement, diagnostic equipment used, and main results that have been obtained. experiments report accurate measurement projectiles accelerated by aluminum copper underwater exploding wires. Based on obtained, a 1.88 km/s has obtained for result discussed ...

BACKGROUND Despite the most heroic efforts, sometimes free flaps fail. Perforator free flaps are not invincible and can suffer the same fate. The real challenge is how to decide what is the next best choice for achieving the desired outcome. METHODS Over the past decade, 298 free perforator flaps were used in our institution. Total failure occurred in 16 patients, and partial failure requirin...

1 BACKGROUND Although flap anatomy is well studied on cadavers and microsurgical techniques are well practiced on rats, still there are few training models for learning the techniques of perforator flap harvesting. The cadaver has no bloodstream, so accuracy of dissection cannot be evaluated and flap viability cannot be verified. Training on humans carries a high risk of flap damage. A living m...

UNLABELLED Breast reconstruction after mastectomy is primarily carried out to improve the patients' quality of life. The most commonly used autologous tissue for reconstruction is the transverse rectus abdominis musculocutaneous flap (TRAM). The TRAM flap could be transferred either as pedicled or a free flap with microvascular anastomosis. The following work was carried out to evaluate the two...

OBJECTIVE To evaluate the impact of the creation of corneal flaps at different thicknesses on the biomechanical properties of swine corneas. METHOD Twelve swine eyes were obtained to form two groups: 100 μm flap thickness and 300 μm flap thickness. Each eye was submitted to the following examinations: raster topography to investigate corneal curvature alterations, ocular response analyzer to ...

The flap domain of multisubunit RNA polymerases (RNAPs), also called the wall, forms one side of the RNA exit channel. In bacterial RNAP, the mobile part of the flap is called the flap tip and makes essential contacts with initiation and elongation factors. Cocrystal structures suggest that the orthologous part of eukaryotic RNAPII, called the flap loop, contacts transcription factor IIB (TFIIB...

Introduction  The temporalis myofascial (TM) is an important reconstructive flap in palate reconstruction. Past studies have shown the temporalis myofascial flap to be safe as well as effective. Free flap reconstruction of palate defects is also a popular method used by contemporary surgeons. We aim to reaffirm the temporalis myofascial flap as a viable alternative to free flaps for palate reco...

the distally based sural fasciocutaneous flap has become a main part of the reconstruction of the lower leg, heel and foot. however, perfusion problems and venous congestion have been reported. over the past decade, several flap modifications have been reported to improve flap viability and to solve a myriad of reconstructive needs. the purpose of this paper is to describe our experience in har...

Abstract Besides the investigation of aeroacoustics responses an asymmetric aerofoil subjected to serrated trailing edge flap angles from negative (flap-down) positive (flap-up), this paper also provides a new perspective on physical mechanisms broadband noise reduction by edge. The blade-loading effect, which is function length and angle for straight/non-serrated flat plate, plays considerable...

Background: The perforator-based propeller flap is a versatile technique that has proven utility in complex lower extremity and lumbar reconstructions. Yet, this flap is prone to venous congestion due to its single-perforator design. In the setting of a congested propeller flap, it is often abandoned and a secondary flap option is utilized. The vascular delay technique has been successfully use...