The origin and the profile of the iron Kα line from active galactic nuclei is being studied. The model with a quasi-spherical distribution of clouds around a compact galactic nucleus is explored in which the intrinsic spectral feature around 6–7 keV is substantially affected by Comptonization of primary X-rays. The predicted spectral profiles are influenced mainly by motion of the clouds in str...

With a standard compact disc (CD) audio player, the only possibility for the user is to listen to the recorded track, passively: the interaction is limited to changing the global volume or the track. Imagine now that the listener can turn into a musician, playing with the sound sources present in the stereo mix, changing their respective volumes and locations in space. For example, a given inst...

We have used the Australia Telescope Compact Array (ATCA) to search for continuum emission toward three strong 6.7-GHz methanol maser sources. For two of the sources, G339.88-1.26 and NGC 6334F (G351.42+0.64), we detect continuum emission closely associated with the methanol masers. A further three clusters of masers showed no radio continuum emission above our sensitivity limit of 1-5 mJy. We ...

We prove that every finite set of homothetic copies of a given 1 compact and convex body in the plane can be colored with four colors 2 so that any point covered by at least two copies is covered by two copies 3 with distinct colors. This generalizes a previous result from Smorodinsky 4 (SIAM J. Disc. Math. 2007). Then we show that for any k ≥ 2, every 5 three-dimensional hypergraph can be colo...

Context. The orbital distribution of exoplanets indicates an accumulation super-Earth sized planets close to their host stars in compact systems. When inward disc-driven migration scenario is assumed for formation, these could have been stopped and might parked at inner edge the disc, or be pushed through disc cavity by a resonant chain. This topic has not properly extensively studied. Using nu...

Previous studies dedicated to source localization are based on the spectral matrix algebraic properties. In particular, two noneigenvector methods, namely, propagator and Ermolaev and Gershman (EG) algorithms, exhibit a low computational load. Both methods are based on spectral matrix structure. The first method is based on the spectral matrix partitioning. The second one obtains directly an ap...

Primary hydatid cyst of the pancreas is extremely rare, and occurs at a rate of 0.2-2% [1]. The causative agent is often Echinococcusgranulosus (EG), which accounts for 99% of the cases. The hydatid disease caused by Echinococcusmultilocularis (EM) is less frequent when compared with EG; however, the differentiation from neoplastic lesions poses a challenge [2-5]. We present a patient who under...

The creation of a multimedia presentation is a non-trivial task. It involves skills that are not readily available to users and it requires support not generally available from authoring software. In order to understand the basic problems of multimedia authoring, this article considers the requirements for deening interactive, dynamic presentations. When contrasted against the facilities availa...

Within the t-J model, we study the electronic properties of the doped antiferromagnet on the kagomé lattice based on the framework of the self-consistent mean-field theory. At the half-filling, the spin-liquid ground-state energy per site of the kagomé antiferromagnet is Eg/NsJ = −0.859, which is in very good agreement with the numerical estimates. Away from the half-filling, the electron photo...

Impacts that leave the Earth-Moon system with a large excess in angular momentum have recently been advocated as a means of generating a protolunar disc with a composition that is nearly identical to that of the Earth's mantle. We here investigate the accretion of the Moon from discs generated by such 'non-canonical' impacts, which are typically more compact than discs produced by canonical imp...