BACKGROUND In recent times, it has been proposed to classify endodontic files as single-use items due to a perceived inability to adequately clean the instruments. The purpose of the present study was to quantify the surface debris on files removed from the manufacturer's packaging, and after cleaning using an ultrasonic bath or a thermal disinfector. METHODS Stainless steel and rotary nickel...

OBJECTIVE To determine the effectiveness of three different methods of ultrasound probe cleaning for the prevention of nosocomial infections. STUDY DESIGN Experimental study. PLACE AND DURATION OF STUDY Radiology Department, the Aga Khan University Hospital, Karachi and Microbiology Department, JPMC, Karachi, from December 2006 to April 2007. PATIENTS AND METHODS A total of 75 culture swa...

OBJECTIVE Studies have demonstrated frequent contamination of stethoscope and usefulness of different disinfectants. Albeit, studies on the precise mode of cleaning and frequency of cleaning are lacking. This study was carried out to determine efficacy of 66% ethyl alcohol as disinfectant, rate of recontamination without cleaning and benefits of daily versus immediate cleaning. METHODOLOGY Pr...

Usable life of cleaning solutions in a model heat processing unit was studied by evaluation of the nature and quantity of residue remaining on the surface of the equipment after cleaning. Lipoidal residue was recovered from equipment surfaces by ether rinsing. A surface displacement technique was used to quantify the lipoidal material, which was characterized by gas-liquid chromatographic analy...

Central to successful e-business is the construction of web sites that attract users, capture user preferences, and entice them into making a purchase. Web mining is diverse data mining applied to categorize both the content and structure of web sites with the goal of aiding e-business. Web mining requires knowledge of the web site structure (hyperlink graph), the web content (vector model) and...

Data Pre-processing • Better normalization tools provide better BLEU scores • Specific pre-processing for German as source language • Cleaning noisy data sets (GigaWord) – Discard sentences in other languages – Remove repeated sentences, or the ones included in the development sets – Normalize the character set – Select best half of the data set according to perplexity SOUL n-gram Model Overvie...

This study aimed to evaluate the influence of irrigation needle gauge and design, and the final root canal diameter on the apical cleaning efficacy. Twelve human mandibular incisors were used. At different stages of root canal widening (sizes 20, 30 and 40 K-files), root canals were filled with radiopaque contrast medium. Four different needles were evaluated: 23G with side opening, 22G with ap...

<span>Sentiment analysis (SA) is an enduring area for research especially in the field of text analysis. Text pre-processing important aspect to perform SA accurately. This paper presents a processing model SA, using natural language techniques twitter data. The basic phases machine learning are collection, cleaning, pre-processing, feature extractions and then categorize data according t...

Two kinds of air duct cleaning methods, mechanical brushing with different brushes and compressed air cleaning, were compared in the laboratory and in newly built buildings. The ducts were contaminated either with test dust or with dust originated from a construction site. The amount of dust on the duct surface was measured with the vacuum test method and estimated visually before and after the...