Metallic Ratios : The Mathematical Relationships between different Metallic Means

Evaluation of Tensile Bond Strength between Dentin and Metallic Copings Using Different Resin Cements

Statement of the Problem: For a successful clinical outcome, luting agents should have a high bond strength. Bond failure is still one of the main reasons of restoration failures. Purpose: The present study was designed to comparatively evaluate the retention of metallic copings using different resin luting cements. Materials and Method: In the present experimental study, 40 intact premolar tee...

Optical forces between metallic particles.

We calculate the optical attractive forces that occur between 30-nm Au or Ag nanocrystals when irradiated at visible wavelengths. These forces show resonances at dipolar plasmon wavelengths, similar to resonances in the near-field electromagnetic intensities. At MW/cm2 intensities, optical forces can be stronger than van der Waals forces and could be used to organize metallic particles. We also...

New Smarandache Sequences: the Family of Metallic Means

The family of Metallic Means comprises every quadratic irrational number that is the positive solution of algebraic equations of the types r--nx-l =0 and r--x-n =0 , where n is a natural number. The most prominent member of this family is the Golden Mean, then it comes the Silver Mean, the Bronze Mean, the NIckel Mean, the Copper Mean, etc. All of them are closely related to quasi-periodic dyna...

The Casimir force between rough metallic plates

– The Casimir force between two metallic plates is affected by their roughness state. This effect is usually calculated through the so-called 'proximity force approximation' which is only valid for small enough wavevectors in the spectrum of the roughness profile. We introduce here a more general description with a wavevector-dependent roughness sensitivity of the Casimir effect. Since the prox...

A Broken Metallic Tracheostomy Tube