The intensification of wet textile processes, such as cleaning and dyeing, by application of ultrasound is well known. In these processes, mass transfer in the interyarn and intrayarn pores of the textile is the basic physical phenomenon. The results of experiments on textile cleaning, based on basic principles of acoustics and cavitation, coupled with analysis of the surface and cross section ...

Background: Manufacturers’ recommendations on cleaning of tracheostomy tubes focus on general warning information and nonMatthias Leonhard Ojan Assadian specific manual cleaning procedures. The aim of this experimental study Michaela Zumtobel was to evaluate different reprocessing methods and to determine the Berit Schneider-Stickler mechanical integrity and functionality of tracheostomy tubes ...

Megasonic energy assisted wet cleaning is traditionally used for removal of particulate contaminants from wafer and mask surfaces in semiconductor industry. One of the major issues associated with megasonic cleaning is the damage caused to fragile features due to transient cavitation. Development of a method to monitor transient cavitation events in solutions irradiated with sound energy will a...

Many manufacturing companies are looking for ways to substitute environmentally problematic cleaning methods for surface treatments with more environmentally friendly ones. In this paper, one potential solution is described. The Qlean method, based on cleaning with highly pure water (in this paper defined as Qlean Water), is a novel cleaning method. This method, now utilized at one plant at a l...

Laser cleaning experiments exhibited a higher cleaning efficiency of the laser cleaning upon application of electrochemical potential on an oxidised iron surface. The objective of this study is to clarify the role of such an electrochemical control on cleaning efficiency. Therefore a study by optical spectrometry at normal incidence in the relevant conditions was performed. From these measureme...

Perchloroethylene (PCE) is a highly utilized solvent in the dry cleaning industry because of its cleaning effectiveness and relatively low cost to consumers. According to the 2006 U.S. Census, approximately 28,000 dry cleaning operations used PCE as their principal cleaning agent. Widespread use of PCE is problematic because of its adverse impacts on human health and environmental quality. As P...

Sludge removal is performed on two steam generators (SG’s) at the Krško Nuclear Power Plant (NEK) during every outage. SG’s are a meeting point of five major plant systems: Reactor Coolant System (RC) primary side and four systems secondary – Auxiliary Feedwater (AF), Blowdown (BD), Main (FW), Steam (MS). activities take place top tube sheet. It always consists classical Lancing (SL) which done...

Black crusts on stone surfaces, mainly composed of gypsum crystals, not only aesthetically affect the stonework but also cause further decay. Appropriate conservation methods should nondestructively detect the pollutant type and extent. In this paper, we propose a computer aided diagnostic method for automatically detecting deterioration patterns on black crusts. The proposed non-destructive me...