forced eruption of impacted teeth.1-8 Elastics, elastomeric chain, and elastic thread usually require frequent reactivation. Cantilever springs are highly elastic and exert relatively long-lasting forces, but tend to break easily and can be uncomfortable for patients. To address these problems, my practice developed the Easy-Way-Coil (EWC) system, which is more robust and comfortable than canti...

AIM Conventionally, noncompliance distal movement of molars relies exclusively on intraoral anchorage. The distal screw, a distal jet appliance supplemented by two paramedian mini-implants, is an innovative alternative. The aim of this study was to evaluate the suitability of this device to move molars bodily and distally. METHODS The effects of the distal screw were evaluated in a sample of ...

Springs and spring runs represent a unique class of aquatic ecosystems typified by high water clarity and relatively constant water temperature and chemical conditions. Structurally, springs are best characterized by their basin morphometry (shape and volume), their position in the landscape, and their flora and fauna. A classic aquatic food web and biomass pyramid in spring ecosystems includes...

Compression springs were prepared from Cr-Si high strength spring steel and coated with pure Zn and ZnNi by electroplating process. The effect of baking after electroplating as well as applying an electroless nickel interlayer on the fatigue and fatigue corrosion of the springs was investigated. The results were analyzed using weibull statistical model. A considerable improvement (8%) in fati...

Summertime ozone in the Western United States presents a unique public health challenge. Changes population, background ozone, wildland fire, and local precursor emissions combined with terrain-induced meteorology can affect surface levels compliance National Ambient Air Quality Standards (NAAQS). While there is considerable research on Northern Front Range Metropolitan Area of Colorado, States...

This paper presents an approach to motion understanding, through identification of physical parameters from image sequences. It is based on a family of particle-based physical models where deformable objects are represented as sets of weighted particles and their interactions. The interaction model presented derives from an energy potential, using dual bonds (extension springs) and ternary bond...

The relative isolation and unique physical properties of the Savusavu Hot Springs in Fiji may yield unique thermophiles. This study was conducted to determine the presence of aerobic thermophilic bacteria in these hot springs. A total of 104 thermophilic bacterial isolates were characterized and using Thermus and Bacillus strains as controls, 58% of the isolates were identified as Anoxybacillus...

We study the elastic properties of phantom networks of Gaussian and nearly Gaussian springs. We show that the stress tensor of a Gaussian network coincides with the conductivity tensor of an equivalent resistor network, while its elastic constants vanish. We use a perturbation theory to analyze the elastic behavior of networks of slightly non-Gaussian springs. We show that the elastic constants...