Using a model of the vertical structure of accretion discs, we calculate disc spectra across a range of system parameters for the helium-rich AM CVn cataclysmic variables, and investigate thermal instabilities in their discs. Applying a χ2-minimisation technique, predicted HeI and HI continuum and line profiles are compared with those observed for two such systems, AM CVn and CR Boo, to estimat...

The model of a simple perceptron using phase-encoded inputs and complex-valued weights is presented. Multilayer two-input and three-input complex-valued neurons (CVNs) are implemented as mixed-signal CMOS integrated circuits. High frequency AC signals are used to carry information. Analog differential amplifier and comparator circuits implement the aggregation function and activation function. ...

BACKGROUND Current research suggests that nurses can influence the outcome for patients with acute coronary syndrome (ACS). The aim of this study has been to evaluate whether a course in cardiovascular nursing (CVN) can improve ambulance nurses' (ANs') prehospital care of patients experiencing suspected ACS, related to pain intensity. METHODS This is a cluster randomised controlled trial that...

The present study was designed to examine whether trigeminal nociceptive inputs are involved in the modulation of parasympathetic reflex vasodilation in the jaw muscles. This was accomplished by investigating the effects of noxious stimulation to the orofacial area with capsaicin, and by microinjecting GABA(A) and GABA(B) receptor agonists or antagonists into the nucleus of the solitary tract (...

We prove analogues of Royden’s Theorem for the Lipschitz metrics of Outer Space, namely that Isom(CVn) = Out(Fn).

Alpha$^2$ Canum Venaticorum (AM CVn) is a strongly magnetic star with peculiar chemical signatures and periodic variability that have been long attributed to the diffusion of elements through photosphere, leading spots across stellar surface. However, recent studies other hot stars are consistent magnetospheric clouds above Here we take renewed approach modeling AM CVn simplified dynamical magn...

Understanding the pathophysiologic mechanisms underlying Alzheimer disease relies on knowledge of disease onset and the sequence of development of brain pathologies. We present a comprehensive analysis of early and progressive changes in a mouse model that demonstrates a full spectrum of characteristic Alzheimer disease-like pathologies. This model demonstrates an altered immune redox state rem...

We present results of a systematic investigation of the evolution of low-mass (0.35 M⊙, 0.40 M⊙ and 0.65 M⊙) helium donors in semidetached binaries with accretors – white dwarfs. In the initial models of evolutionary sequences abundance of helium in the center 0.1 < ∼ Yc ≤ 0.98. Results of computations may be applied to the study of the origin and evolutionary state of AM CVn stars. It is shown...

The Sloan Digital Sky Survey has been instrumental in obtaining a homogeneous sample of the rare AM CVn stars: mass-transferring binary white dwarfs. As part of a campaign of spectroscopic follow-up on candidate AM CVn stars from the Sloan Digital Sky Survey, we have obtained time-resolved spectra of the g = 20.2 candidate SDSS J155252.48+320150.9 on the Very Large Telescope of the European Sou...