Introduction: Patients undergoing orthodontic treatment with fixed appliances have a challenging oral hygiene situation because brackets tenaciously trap food and other oral debris. Good plaque control is an important factor in the maintenance of dental health during fixed appliance therapy. Many different types of specially designed toothbrushes have been developed in recent years in order to ...

Background & objectives: Nitrate contamination of drinking water is a common problem in many parts of the world that poses a serious threat to public health and environment. In this research, the performance of a new rotary electrocoagulation reactor model for removal of nitrate in presence or absence of turbidity has been investigated. Methods: In this study, aluminum and iron electrodes were...

Background: Entry of untreated wastewater of wool scouring factories has been associated with many environmental hazards because of high rate of pollution. Presently effective treatment methods and reducing the costs of operation and maintenance from treatment units have always been under the attention of this industry owners. The aim of this survey is to present a suitable method for the treat...

We propose an ILP system FOIL-I, which induces logic programs by a top-down method from incomplete samples. An incomplete sample is constituted by some of positive examples and negative examples on a nite domain. FOIL-I has an evaluation function to estimate candidate de nitions, the function which is composition of an information-based function and an encoding complexity measure. FOILI uses a ...

Product & Technology Reviews (PTR) are developed for Northwest electric utilities. EnergyIdeas Clearinghouse engineers review published literature for objective, independent test results. No primary testing was conducted by the reviewer for the preparation of this document. PTR factsheets describe the technology, discuss available data, and suggest additional testing needed to verify energy sav...