INTRODUCTION Pulpectomy of primary teeth is commonly carried out with hand files and broaches; a tricky and time consuming procedure. The purpose of this in vitro study was to compare the cleaning efficacy and time taken for instrumentation of deciduous molars using hand K-files and Flex Master rotary system. MATERIALS AND METHODS In this study, 68 canals of 23 extracted primary molars with a...

When a fluticasone propionate (FP) diskhaler is used to administer inhaled corticosteroid, it has been reported that there is considerable drug residue remaining in the diskhaler after use. The internal structure of the diskhaler is complex, and it is possible that sufficient cleaning of the device is not achieved using the attached brush. In this study, the diskhaler cleaning method was examin...

This paper describes the experience gained in Sweden in connection with early phase-out of CFC-113 in the production engineering industry. It concentrates particularly on the phase-out of CFC-113 in the production of PCB assemblies, although parallel applications for cleaning of precision components, metal cleaning and : to some extent the phase-out of l,l,l-trichloroethane are also considered....

The aim is a cleaning robot which automatically cleans the outside of windows on a facade with vertical jambs and horizontal bars. The facade has to possess certain constructive properties. This "interface" enables the cleaning robot which is detachable from the building and portable to operate on any respectively designed facade on several buildings. A special cleaning-head keeps the water use...

We assessed the adenosine triphosphate luminometer as a tool for point-of-cleaning education. Following a terminal cleaning, infection preventionists met with cleaning staff and used the luminometer to evaluate multiple surfaces; 820 surfaces in 210 rooms were sampled. The mean proportion of clean surfaces improved significantly over the study period, P = .012. These findings suggest that direc...

ne01 themostcommoncausesof coating failure is inadequate surface preparation. Hence it is important to accuratelyassesstheefficiency of a cleaning technique prior to introducing it in a commercial operation. aecent developments in the cleaning of metallic surfaces ~ idethe use of aqueoussolutions that can beoperated at l i . Lemperatures to save energy. Some expensive organic Soivents that have...

OBJECTIVE To evaluate the use of ear endoscopy in the postoperative management of open mastoidectomy cavities, and to test whether ear endoscopy improves inspection and cleaning compared with ear microscopy. METHODS Prospective study. Thirty-two ears were divided into two groups: group 1, examination and cleaning of mastoid cavities under endoscopic visualization after microscopic standard ea...

Ultrafiltration (UF) of whey is a major membrane based process in the dairy industry. However, commercialization of this application has been limited by membrane fouling, which has a detrimental influence on the permeation rate. There are a number of different chemical and physical cleaning methods currently used for cleaning a fouled membrane. It has been suggested that the cleaning frequency ...

The problem of data cleaning, which consists of removing inconsistencies and errors from original data sets, is well known in the area of decision support systems and data warehouses. However, for some applications, existing ETL (Extraction Transformation Loading) and data cleaning tools for writing data cleaning programs are insufficient. One important challenge with them is the design of a da...