Large field of view gamma cameras are widely used to perform lymphoscintigraphy in the sentinel lymph nodes (SLN) procedure in case of breast cancer. However, they are not specified for this application and their sizes do not enable their use in the operative room to control the excision of the all SLN. We present the results obtained with a prototype of a new mini gamma camera developed especi...

Polarization measurements of thermal radiation from magnetic white dwarf (MWD) stars have been proposed as a probe axion-photon mixing. The leaving the surface MWD is unpolarized, but if low-mass axions exist then photons polarized parallel to direction MWD's field may convert into axions, which induces linear polarization dependent on strength coupling $g_{a\gamma\gamma}$. We model this proces...

We calculate all planar contributions to the two-loop massless helicity amplitudes for process $q\bar q\to \gamma\gamma\gamma$. The results are presented in fully analytic form terms of functional basis proposed recently by Chicherin and Sotnikov. With this publication we provide already used us NNLO QCD calculation LHC $pp\to \gamma\gamma\gamma$ [Chawdhry et al. (2019)]. Our agree with a recen...

Behavioral studies demonstrate that a face presented in the upright orientation attracts attention more rapidly than an inverted face. Saccades toward an upright face take place in 100-140 ms following presentation. The present study using electrocorticography determined whether upright face-preferential neural activation, as reflected by augmentation of high-gamma activity at 80-150 Hz, involv...

We consider magnetic Schr\"odinger operator $H=(i \nabla +A)^2-\alpha \delta_\Gamma$ with an attractive singular interaction supported by a piecewise smooth curve $\Gamma$ being local deformation of straight line. The field $B$ is supposed to be nonzero and local. show that the essential spectrum $[-\frac14\alpha^2,\infty)$, as for non-magnetic $\Gamma$, demonstrate sufficient condition discret...

High-energy gamma rays are a valuable tool for studying particle acceleration and radiation in the magnetospheres of energetic pulsars. The seven or more pulsars seen by instruments on the Compton Gamma Ray Observatory (CGRO) show that: the light curves usually have double-peak structures (suggesting a broad cone of emission); gamma rays are frequently the dominant component of the radiated pow...

In extended Kitaev models on the honeycomb lattice, off-diagonal interactions (e.g., $\mathrm{\ensuremath{\Gamma}},\phantom{\rule{0.16em}{0ex}}{\mathrm{\ensuremath{\Gamma}}}^{\ensuremath{'}}$ terms) can give rise to non-Kitaev quantum spin liquids and several magnetically ordered phases. present paper, we dope holes system study resultant $t\text{\ensuremath{-}}K\text{\ensuremath{-}}\mathrm{\en...

Theta oscillations synchronize the basolateral amygdala (BLA) with the hippocampus (HPC) and medial prefrontal cortex (mPFC) during fear expression. The role of gamma-frequency oscillations in the BLA is less well characterized. We examined gamma- and theta-frequency activity in recordings of neural activity from the BLA-HPC-mPFC circuit during fear conditioning, extinction, and exposure to an ...

Very high energy gamma-rays (Eγ > 20 GeV) from blazars traversing cosmological distances through the metagalactic radiation field can convert to electron-positron pairs in photonphoton collisions. The converted gamma rays initiate electromagnetic cascades driven by inverseCompton scattering off the microwave background photons. The cascades shift the injected gamma ray spectrum to MeV-GeV energ...

The Kitaev model is an exactly solvable quantum spin within the language of constrained real fermions. In spite numerous studies for magnetic fields along special orientations, there a limited amount knowledge on complete field-angle characterization, which can provide valuable information existence fractionalized excitations. For this purpose, we first study pure ferromagnetic and antiferromag...