Recent Spectroscopic Determinations

Helioseismological Implications of Recent Solar Abundance Determinations

We show that standard solar models are in good agreement with the helioseismologically determined sound speed and density as a function of solar radius, the depth of the convective zone, and the surface helium abundance, as long as those models do not incorporate the most recent heavy element abundance determinations. However, sophisticated new analyses of the solar atmosphere infer lower abund...

MR spectroscopic imaging: principles and recent advances.

MR spectroscopic imaging (MRSI) has become a valuable tool for quantifying metabolic abnormalities in human brain, prostate, breast and other organs. It is used in routine clinical imaging, particularly for cancer assessment, and in clinical research applications. This article describes basic principles of commonly used MRSI data acquisition and analysis methods and their impact on clinical app...

A quick peek into the spectroscopic determinations behind its bioinorganic structure and mechanism

Neutron Star Mass Determinations

I review attempts made to determine the properties of neutron stars. The focus is on the maximum mass that a neutron star can have, or, conversely, the minimum mass required for the formation of a black hole. There appears to be only one neutron star for which there is strong evidence that its mass is above the canonical 1.4M⊙, viz., Vela X-1, for which a mass close to 1.9M⊙ is found. Prospects...

Non Alcoholic Fatty Liver Disease (NAFLD) and Visceral Fat: Accurate spectroscopic and Volumetric determinations derived from MR

Introduction: Non-alcoholic fatty liver disease (NAFLD) has become an increasingly prevalent liver condition in children and adults, which can become a precursor to more serious abnormalities, such as hepatitis and fibrosis. Since biopsy is often associated with sample measurement error and patient discomfort, non-invasive methods to predict and evaluate hepatic lipid are attractive alternative...