We summarize our recent progress in investigating the role of magnetic reconnection in solar eruptive events consisting of flares, Coronal Mass Ejections (CMEs), and/or Magnetic Clouds (MCs). The rate and total flux of magnetic reconnection in low-corona are inferred from flare observations and compared with kinematic properties and magnetic flux budget of erupting flux ropes. The results and t...

Despite the relatively simple stoichiometry and structure of VO(2), many questions regarding the nature of its famous metal-insulator transition (MIT) remain unresolved. This is in part due to the prevailing use of polycrystalline film samples and the limited spatial resolution in most studies, hindering access to and control of the complex phase behavior and its inevitable spatial inhomogeneit...

OBJECTIVES To evaluate by magnetic resonance spectroscopy the age-related cerebral alterations present in myotonic dystrophy (MD) and to compare these results with those obtained by magnetic resonance imaging. DESIGN Twenty-one patients (aged 16-63 years) with MD were compared with 16 age-matched healthy control subjects. RESULTS In magnetic resonance spectroscopy, the mean (+/- SD) ratio o...

In this study, the rotational dynamics of hydration water confined in calcium-silicate-hydrate (C-S-H) gel with a water content of 22 wt.% was studied by broadband dielectric spectroscopy in broad temperature (110-300 K) and frequency (10(-1)-10(8) Hz) ranges. The C-S-H gel was used as a 3D confining system for investigating the possible existence of a fragile-to-strong transition for water aro...

Batisite was reported to be a nonlinear optical material showing second harmonic generation. Using dielectric spectroscopy and polarization measurements, we provide a thorough investigation of the dielectric and charge-transport properties of this material. Batisite shows the typical characteristics of a linear lossy dielectric. No evidence for ferro- or antiferroelectric polarization is found....

Low temperature magnetotransport measurements and far infrared transmission spectroscopy are reported in molecular beam epitaxial grown twodimensional hole systems confined in strained InAs quantum wells with magnetic impurities in the channel. The interactions of the free holes spin with the magnetic moment of 5/2 provided by manganese features intriguing localization phenomena and anomalies i...

Magnetic resonance spectroscopy of the living brain is described. It is based on the same physics as magnetic resonance imaging, but instead of images based on the signal from tissue water, it measures specific compounds in the brain, currently numbering some two dozen. Being almost entirely non-invasive, it is well-suited for longitudinal and human studies of both normal function and disease p...