purpose: to evaluate the etiologies of excessive blinking in children and teenagers less than 18 years of age in hamedan, iran. methods: this study was performed during 2009-2010 as a cross-sectional study on 50 children and teenagers less than 18 years old who were referred to sheikh-al-reis and farshchian clinics in hamedan for abnormal and excessive blinking. ophthalmic and neurologic examin...

Titanium carbide (TiC) nanocrystals were recently proposed as the carrier of the mysterious 21 mm emission feature observed in post–asymptotic giant branch stars, based on their close spectral match and the presolar nature of meteoritic TiC nanograins (which reveals their stellar ejecta origin). But we show in this Letter that the KramersKronig dispersion relations, which relate the wavelength-...

Both epilepsy and tic disorders may share common mechanisms with the involvement of abnormal cortical-basal ganglion circuit connection and dopaminergic dysfunction. However, the association between epilepsy and tic disorders has never been studied. This study investigated the risks of developing tic disorders among children with epilepsy using databases of a universal health insurance system i...

Tics in Gilles de la Tourette syndrome (GTS) resemble fragments of normal motor behaviour but appear in an intrusive, repetitive and context-inappropriate manner. Although tics can be voluntarily inhibited on demand, the neural correlates of this process remain unclear. 14 GTS adults without relevant comorbidities participated in this study. First, tic severity and voluntary tic inhibitory capa...

The present work studies the synthesis and performance of TiC/H13 tool steel composite coatings obtained by the laser deposition technique. he effect of laser beam-scanning speeds and the concentrations of TiC in injected powder on the morphologies and microstructures of deposited eads are investigated. The results show that the beam-scanning speeds affect the size and morphology of the beads. ...

BACKGROUND Dilated cardiomyopathy (DCM) involves significant remodeling of the left ventricular-mitral valve (MV) complex, but little is known regarding the remodeling of the mitral leaflets. The aim of this study was to assess changes in matrix composition and turnover in MV leaflets with DCM. METHODS AND RESULTS Radiopaque markers were implanted in 24 sheep to delineate the MV; 10 sheep und...

Glioblastoma (GBM) is maintained by a small subpopulation of tumor-initiating cells (TICs). The arduous assessment of TIC frequencies challenges the prognostic role of TICs in predicting the clinical outcome in GBM patients. We estimated the TIC frequency in human GBM injecting intracerebrally in mice dissociated cells without any passage in culture.All GBMs contained rare TICsand were tumorige...