Universal symmetry-protected persistent spin textures in noncentrosymmetric crystals.

The significance of Mendeleev's periodic table extends beyond the classification of elements; it lies in its remarkable predictive power for discovering new elements and properties, revealing the underlying symmetrical patterns of nature that were only fully understood with the advent of quantum mechanics. Fundamental material properties, such as electron transport and magnetism, are also governed by crystal symmetry. In particular, spin transport depends on the spin polarization of electronic states, and recently discovered materials where the electron spin polarization is independent of momentum-a property known as persistent spin texture (PST)-promise extended spin lifetime and efficient spin accumulation.

Head and Neck Cancer in Suriname: An Epidemiologic Review of Clinical and Pathologic Features of Patients Treated Between 2009 and 2021.

Purpose: This study investigates the incidence and clinicopathologic characteristics of head and neck cancer (HNC) in the Surinamese population, with an emphasis on the burden of human papillomavirus (HPV) and Epstein-Barr virus (EBV).

Methods: Histologically confirmed HNC diagnosed between 2009 and 2021 were retrospectively collected from the Academic Hospital Paramaribo, the country's diagnostic pathology center. Additional clinical data were acquired from three other hospitals.

Effects of game design characteristics of a virtual reality serious game for upper-limb prosthesis control training on motor learning.

Introduction: Rehabilitation outcomes of hand prosthesis control training generally benefit from an early start in the rehabilitation regimen as well as the use of modern technologies, like serious games, in lieu of more conventional methods. In this study, we tested a virtual reality based myoelectric prosthesis training serious game, specifically how the game design elements affected different aspects of motor control and training.

Methods: Ten able-bodied participants were asked to execute a series of tasks by controlling an LDA-controlled 1-DoF virtual hand prosthesis within a virtual reality environment (VRE) serious game.

A validation study on the accuracy and precision of gaze and vergence using stereoscopic eye-tracking technology.

Binocular video-based eye-tracking allows for gaze and vergence measurements, but the accuracy and precision of vergence are barely addressed. Here, we investigate the accuracy and precision of both gaze and vergence measurements using a stereoscopic eye-tracking system. Previous studies have evaluated stereoscopic eye-trackers for gaze eccentricities up to 16°.