• An international team of researchers has developed a numerical modeling technique to study specific types of particles called excitons, which consist of a positively and a negatively charged electron and hole, respectively. (nanowerk.com)
  • All the requisite attributes emerge simply (and relativistically invariant) as a result of particle conformation and occupation in and of spacetime itself, a spacetime endowed with the imprimature of general relativity. (mdpi.com)
  • To make their equations yield the familiar (and well-tested) results, they needed to include two different types of interactions: "retarded," which took into account the time required for an effect to propagate from one location to another, and "advanced," effects that arrived at their destination before they had been emitted. (encyclopedia.com)
  • At that time, the recent advent of quantum mechanics was radically altering the conception of particles, as a single particle could seemingly span a field as would a wave , a paradox still eluding satisfactory explanation. (wikipedia.org)
  • The time evolution of a system of coagulating particles under the product kernel and arbitrary initial conditions is studied. (bioportfolio.com)
  • A matrix representing the transitions from some initial to some final state in a given interaction. (angelfire.com)
  • The main purpose of this study is to update the pulmonary retention values of non-fibrous mineral particles in the general population. (bioportfolio.com)
  • The primary goal of the study is to see if the PET/CT will be able to determine the precise location of the Y-90 particles within the liver and within the tumors. (bioportfolio.com)
  • The purpose of this study is to test if PET scans using 89Zr-DFO-cRGDY-PEG-Cy5-C' dot particles, can be used to take pictures of brain tumors. (bioportfolio.com)
  • In line with his unique academic background, Professor McGrath's main area of interest is in the interaction of theology and the sciences. (gresham.ac.uk)
  • The perturbation expansion and the associated Feynman diagrams are useful to the extent that the strength of the interaction is small, so that the lowest-order terms, or diagrams with the fewest vertices, give the main contribution to the matrix element. (thefreedictionary.com)