Compact flat-lens system can generate nondiffracting bottle beams

Most laser sources produce Gaussian beams that diverge as they propagate. This natural spreading limits their effectiveness in applications that require light to remain concentrated over long ...
Nature

Stress signalling pathways that impair prefrontal cortex structure and function

The prefrontal cortex (PFC) provides 'top-down', higher-order guidance of thought, attention, behaviour and emotion, with dorsolateral regions regulating cognition, and ventromedial regions regulating ...
IEEE

Fractional-order Modeling Approach and Compensation Strategy of a Solid-Core Active Magnetic Bearing Including Eddy Currents

Abstract: This paper proposes a fractional-order model based on the Bessel function, along with a fractional-order sliding mode control (FSMC) strategy, to address the discrepancies between the actual ...
IEEE

Rolling Bearing Fault Diagnosis Methods Based on Adaptive Fourier-Bessel Networks

Abstract: Deep learning has been widely applied in the field of fault diagnosis, but most research still focuses on time-domain feature analysis. Frequency-domain-based methods are relatively rare and ...
verywellhealth

The Anatomy of the Midbrain

The midbrain regulates crucial functions like hearing, vision, movement, pain, sleep, and consciousness. Conditions such as stroke or Parkinson's disease can affect the midbrain, leading to symptoms ...