BACKGROUND AND PURPOSE: Progressive changes in the substantia nigra pars compacta and locus ceruleus of patients with Parkinson disease and Alzheimer disease visualized by neuromelanin MRI and cardiac postganglionic sympathetic nerve function on I-metaiodobenzylguanidine scintigraphy have not been fully evaluated. We compared the diagnostic value of these modalities among patients with early Pa...

Advancement in the semiconductor industry has transformed modern society. A miniaturization of a silicon transistor is continuing following Moore?s empirical law. The planar metal-oxide field effect (MOSFET) structure reached its limit terms technological node reduction. To ensure continuation CMOS scaling and to overcome Short Channel Effect (SCE) issues, new MOS known as Fin field-effect (Fin...

Melanins are widely used in medicine, pharmacology and cosmetics. Different technologies have been used to obtain melanin including: chemical synthesis based on oxidation of tyrosine and its derivatives; extraction from animal materials; alkaline extraction from plant material; and microbiological synthesis. A few number of works have been published that were focused on purification of water in...

Of all the current detection techniques with nanometre resolution, only X-ray microscopy allows imaging of nanoparticles in suspension. Can it also be used to investigate structural dynamics? When studying the response to mechanical stimuli, the challenge lies in its application with a precision comparable with the spatial resolution. In the first shear experiments performed in an X-ray microsc...