Double-stranded DNA viruses package their genomes into procapsids via an ATP-driven nanomotor. This ingenious motor configuration has inspired the development of biomimetics in nanotechnology. Bacteriophage varphi29 DNA-packaging motor has been a popular tool in nanomedicine. To provide information for further motor modification, conjugation, labeling, and manufacturing, the connector protein g...

OBJECTIVE The aim of the study is to evaluate the stress distribution in tooth supported 5-unit fixed partial denture (FPD) having tooth as pier abutment using rigid and nonrigid connectors respectively, under simultaneous and progressive loading. MATERIAL AND METHODS The three-dimensional (3D) finite element program (ANSYS software) was used to construct the mathematical model. Two 5-unit FP...

OBJECTIVE To determine the clinical presentations, complications and mortality in patients with Dandy-Walker Malformation (DWM) after surgery i.e., shunt with y-connector. STUDY DESIGN Case series. PLACE AND DURATION OF STUDY Neurosurgery Ward, JPMC, Karachi, from January 2009 to December 2013. METHODOLOGY Cases of DWM, with associated hydrocephalus, further confirmed on CT scan of brain,...

STUDY DESIGN Retrospective case series of one institute database. OBJECTIVE To investigate the differences in the metallic strength of rods used for implant failure in the dual growing rod technique and evaluate clinical outcomes. SUMMARY OF BACKGROUND DATA The dual growing rod technique in which implanted rods extend with the growth of the spine is a useful treatment for early onset scolio...

BACKGROUND The Symmetry Bypass System Aortic Connector (St Jude Medical, Inc) is a novel device for the construction of sutureless proximal anastomoses. The connector allows attachment of saphenous vein grafts to the aorta without requiring aortic clamping. We report our initial clinical experience with this device. METHODS In a 2-month period from May to July 2001, a total of 139 consecutive...

BACKGROUND Needleless intravascular catheter connector valves have been introduced into clinical practice to minimize the risk of needlestick injury. However, infection-control risks associated with these valves may be underappreciated. In March 2005, a dramatic increase in bloodstream infections was noted in multiple patient care units of a hospital in temporal association with the introductio...

Abstract RF (Radio Frequency) connector has been extensively applied in the field of communication for it is a key device transmitting microwave signals. If he end designed improperly dimension, clearance will be observed after inserting, resulting an abnormal phenomenon voltage standing wave ratio (VSWR) connector. This paper studied influence inserting on through theoretical analysis and perf...

Colonoscopy is the preferred diagnostic and therapeutic modality in the lower intestinal tract. Most Dutch hospitals use Lefax (Bayer Vital GmbH, Leverkusen, Germany) to optimize endoscopic imaging. The main component of Lefax is simethicone (●" Fig.1), a silicondioxide crystalloid of the silicone polymer dimethicone, which decreases the surface tension of bubbles. Lefax is added towater and in...

We have assessed the feasibility of retrograde nasotracheal intubation using a flexometallic tracheal tube with a detachable pilot balloon and connector in a study of 20 consecutive adult patients undergoing oropharyngeal surgery. The technique consisted of: (1) laryngoscope-guided orotracheal intubation; (2) insertion of an 18-gauge Foley catheter through the nose and retraction into the mouth...

OBJECTIVE The aim of this study was to determine the effect of trenched zirconia bar on the von Mises stress distribution of IPS -Empress II core ceramics. MATERIALS AND METHODS The three-dimensional model including a three-unit bridge from the second premolar to the second molar was designed. The model was reinforced with zirconia bar (ZB), zirconia bar with vertical trench (VZB) and zirconi...