Combination of two physical phenomena, capillary pressure gradient and wettability gradient, allows a simple two-step fabrication process that yields a reliable hydrophobic self-cleaning condenser surface. The surface is fabricated with specific microscopic topography and further treatment with a chemically inert low-surface-energy material. This process does not require growth of nanofeatures ...

BACKGROUND It has recently been reported that reusable dispensers for surface disinfection tissues may be contaminated, especially with adapted Achromobacter species 3, when products based on surface-active ingredients are used. Fresh solution may quickly become recontaminated if dispensers are not processed adequately. METHODS We evaluated the abilities of six manual and three automatic proc...

C leanliness of parts and assemblies has always been an important factor for product yield in the disk drive industry. The challenge is that most disk drive parts are manufactured by conventional material processing methods, such as machining. stamping. and molding. Ultimately, the manufacturing process normally requiring the use of oils, coolants, and abrasive tools becomes the primary source ...

Pipe cleaning is currently the most effective method to improve cleanliness and corrosion resistance of pipes. In this paper, a new pipe proposed, combining mechanical chemical cleaning, offline tank online cycle cleaning. Through experiments characterization morphology changes, mechanism pickling passivation Q235 steel was explored, entire process microstructure changes on wall’s surface analy...

OBJECTIVE The aim of this study was to investigate Candida albicans biofilm formation on denture liners and to analyse the efficacy of cleaning protocols. MATERIAL AND METHODS Specimens were prepared from four silicone-based soft denture liners. After artificial ageing and surface free energy determination, specimens were incubated with saliva (2 h) and Candida albicans ATCC 10231 for either ...

objective: the aim of this study was to evaluate and compare the cleaning ability and instrumentation time of manual and rotary methods used for preparation of primary anterior teeth. materials and methods: forty-four primary anterior teeth were used in this experimental study. access cavities were prepared and india ink was injected into the canals. the samples were divided into three groups a...

This paper discusses opportunities to promote pollution prevention technologies through public policy, describing the case of dry cleaning. The crisis in dry cleaning is associated with the industry's reliance on perchloroethylene (PCE), the chemical cleaning solvent used by the vast majority of cleaners. The limits to the current pollution control or end-of-pipe system of laws and regulations ...

Irrigation has an important role during endodontic treatment. We are proposing a sequence for the different irrigating agents in order to achieve the best chemical preparation possible. During the last several years endodontics has progressed to the point for treatment to be less traumatic for the patient and less stressful for the dentist. However, if the use of nickel titanium rotary instrume...