Electrochemical impedance spectroscopy (EIS) was used to detect stress corrosion cracking (SCC) in stainless steel 304 alloy exposed to an aqueous environment at 120 °C. Stainless steel 304 alloy as u-bend was tested in the solution that contains 40 weight percent of magnesium chloride. U-bended samples were prepared according to ASTM G30. EIS measurements were always performed simultaneously o...

JCO/FEBRUARY 2010 © 2010 JCO, Inc. T venerable Hawley retainer has been basically unaltered in form and application since its introduction to the specialty nearly 100 years ago.1 To add to its utility, we suggest a modification of the retentive clasping mechanism. Although we prefer to use ball clasps rather than Adams clasps because of their sturdiness and simplicity, they are shorter and thus...

This paper proposes and describes a design of an integrated refractive index sensor for (bio-) chemical sensing applications based on a U-shape bend waveguide structure. The proposed structure is formed by connecting four-bend waveguides and optimized using beam propagation method so that the output power has a function of refractive index of measurand liquid. The results show that the designed...

JCO/APRIL 2010 © 2010 JCO, Inc. C techniques for activating a closing loop are problematic. Cinching the distal end of the archwire can be time-consuming and inaccurate. Tying back an omega loop between the premolars or between the second premolar and first molar is difficult when the interbracket space is narrow. Lacing back the archwire to a hook is possible, but a crimpable hook can come loo...

The tem po of W ednesday night’s Student Senate m ee t­ ing ran smoothly and quickly, as senators approved a letter to th e s t u d e n t body a b o u t c o m m u n i ty r e l a t i o n s an d passed resolutions regarding S tu d e n t Union fiscal policy and o u t r e a c h to h u r r i c a n e victims with little discussion. The approved letter, which will be s e n t v ia e -m a i l , ad d res...

BACKGROUND Washbasin U-bends are reservoirs of microbial contamination in healthcare environments. U-Bends are constantly full of water and harbour microbial biofilm. AIM To develop an effective automated cleaning and disinfection system for U-bends using two solutions generated by electrochemical activation of brine including the disinfectant anolyte (predominantly hypochlorous acid) and cat...