2014 We have carried out the first observation of spiral spin or chirality domains, in a single crystal of terbium in its helimagnetic phase, by polarized neutron diffraction topography. The different domain structures observed are a function of the thermal history of the sample. When the sample is warmed from the ferromagnetic phase one observes stripe domains with long axis perpendicular to t...

We give a short proof of Urabe’s criteria for the isochronicity of periodical solutions of the equation ẍ+ g(x) = 0. We show that apart from the harmonic oscillator there exists a large family of isochronous potentials which must be all non-polynomial and not symmetric (even function of the coordinate x). PACS numbers: 46.10.+z, 95.10.Ce AMS classification scheme numbers: 34C05 Published in Jou...

Stewart LT. Cell adhesion proteins and the pathogenesis of autism spectrum disorders. J Neurophysiol 113: 1283–1286, 2015. First published July 2, 2014; doi:10.1152/jn.00780.2013.—Current theories on the pathogenesis of autism spectrum disorders (ASD) maintain that the associated cognitive and behavioral symptoms are caused by aberrant synaptic transmission affecting specific brain circuits. Tr...

We discuss a property of our recently introduced generalized canonical ensemble [M. Costeniuc, R.S. Ellis, H. Touchette, B. Turkington, The generalized canonical ensemble and its universal equivalence with the microcanonical ensemble, J. Stat. Phys. 119 (2005) 1283]. We show that this ensemble can be used to transform metastable or unstable (nonequilibrium) states of the standard canonical ense...

A retrospective review of the multicenter IPSYS CeAD (Italian project on stroke in young adults cervical artery dissection) study was performed from January 2000 to June 2019. Of 1283 patients with spontaneous dissection, mean age 48 years, 545 were women (43%), and 103 (8%) had a diagnosis coexistent cerebrovascular fibromuscular dysplasia (FMD). More FMD women. history migraine intracranial a...