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...

The purpose of the present study was to analyze the histological aspects of the saphenous veins after the use of the Symmetry aortic connector in off pump coronary artery bypass surgery (OPCAB). Nineteen consecutive patients who underwent OPCAB surgery and who received one proximal saphenous vein anastomosis using the St Jude aortic Symmetry connector system were evaluated. In each patient one ...

The objective of this paper is to explore the effects of longitudinal speed reduction markings (LSRMs) on vehicle maneuvering and drivers' operation performance on interchange connectors with different radii. Empirical data were collected in a driving simulator. Indicators-relative speed change, standard deviation of acceleration, and gas/brake pedal power-were proposed to characterize driving ...

Given an undirected graph G = (V; E) and a partition fS; Tg of V , an S{T connector is a set of edges F E such that every component of the subgraph (V; F) intersects both S and T. If either S or T is a singleton, then an S{T connector is a spanning tree of G. On the other hand, if G is bipartite with colour classes S and T, then an S{T connector is an edge cover of G (a set of edges covering al...

With the continued miniaturisation of portable embedded systems, wireless EEG recording techniques are becoming increasingly prevalent in animal behavioural research. However, in spite of their versatility and portability, they have seldom been used inside water-maze tasks designed for rats. As such, a novel 3D printed implant and waterproof connector is presented, which can facilitate wireless...

Software connectors are increasingly recognized as an important consideration in the design and implementation of object-oriented software systems. Connectors can be used to communicate across a distributed system, coordinate the activities of several objects, or adapt one object’s interface to the interface of another. Mainstream object-oriented languages, however, do not provide explicit supp...