hydro-forming is a fabrication process that uses a fluid medium to form a piece by using high internal pressure. in tube hydro-forming, a tubular blank is placed between two dies, sealed and pressurized water injected, deforming the tube walls in the cavity form of the dies. exist several typical hydro-forming processes such as t- shapes, cross-shapes and y- shapes. successful hydro-forming dep...

In 1893, Maydl’ conceived of a plan for introducing an anesthetic through a tracheal tube; and Eisenmenger’ added an inflatable cuff around the distal end of the tube. However nothing was done with these ideas for over a quarter of a century. In 1924, Waters2 described the “carbon-dioxide absorption” method of anesthesia, and four years later Waters and Guedel3 published an article on the “Intr...

The structure of the Abelian-projected (AP) flux tube in SU(2) gauge theory in the maximally Abelian gauge is studied by applying the Hodge decomposition to the Abelian Wilson loop. It is shown that the profile of the AP flux tube has the same structure as the classical flux tube solution in the dual Abelian Higgs model, which is composed of a Coulombic and a solenoidal electric field linked by...

Stormwater ponds are intended to be used for mitigating floods, improving water quality, and recharging groundwater. The sediment-water interface (SWI) of stormwater exhibits properties that influence surface water–groundwater exchanges similar naturally occurring bodies. However, these rarely monitored over time account their functionality. As organic inorganic sediments accumulate on the pond...

Coliform group has been extensively used as an indicator of drinking water quality and historically led to the public health protection concept. Multiple tube fermentation technique has been currently used for assessment of the microbial quality of drinking water. This method, however, has limitations. Enzymatic assay constitute an alternative approach for detecting indicator bacteria, namely t...

High-intensity ultrasound can induce cavitation bubbles and acoustic streaming in liquid, which makes it possible for power ultrasonic to be applied to the improvement of heat transfer process. In the present work, the experimental study was made on the heat transfer enhancement of water-water heat exchanger in shell-and-tube type assisted by power ultrasonic. The design of the experimental sys...

BACKGROUND Maintaining the cuff pressure of endotracheal tubes (ETTs) within 20-30 cmH2O is a standard practice. The aim of the study was to evaluate the effectiveness of standard practice in maintaining cuff pressure within the target range. METHODS This was a prospective observational study conducted in a tertiary-care intensive care unit, in which respiratory therapists (RTs) measured the ...