ESR observations of chitin

ESR of clays

Electron spin resonance (ESR) spectroscopy has contributed significantly to the identification and characterization pf paramagnetic impurities associated with clays, Following a brief discussion of the general principles of the technique, a review is given of the application of ESR to the study of those paramagnetic species (chiefly iron and radiation-induced lattice defects) located either wit...

Esr in Pulsed Fields

Very strong magnetic fields are needed to study magnetic resonances that are broadened by impurities, lattice deformation or other interactions such as the exchange energy in antiferromagnets. Certain phenomena that can be studied by means of magnetic resonances will occur only at very high magnetic fields, such as magnetic field induced phase transitions in the crystal lattice or in the arrang...

ESR teleradiology survey: results

With recent developments of teleradiology technology and services, it has become necessary to better evaluate its extent and use among different countries in Europe. With this goal in mind, the ESR launched two specific surveys intended to gather the current state of adoption and implementation of teleradiology in clinical practice. A special focus on differentiating between insourcing teleradi...

The ESR spectrum of PH4

Luminous Phenomena of Earthquakes: Observations and Theories

Over the past few years, different theories (piezoelectric, positive holes, friction-vaporization, exo-electron emission, tribo- or fracture electrification) have been presented for the interpretation of earthquake lights. Although these theories can interpret earthquake luminous, each suffer from particular problems. There are also ambiguities and questions about the location of the light, the...