About migration situation in Ural federal origion at the end of 2014 year

The author analyzes current migration situation in the Urals region of Russia including proportion of migrants from selected countries in the inflow, involvement of migrants in various types of economic and social activity. The paper contains some valuable observances on the impact of immigrants on receiving society, among them health and criminal situation.В статье автор анализирует современную миграционную ситуацию на Урале, включая пропорции мигрантов из разных стран в общем миграционном потоке, включенность мигрантов в различные виды социальной и экономической деятельности. В статье отражается ряд важных наблюдений о влиянии мигрантов на принимающее общество, в т.ч. на ситуацию с охраной здоровья и криминальную обстановку

New species and records of saxicolous lichens from the Kodar Range (Trans-Baikal Territory, Russia)

Fifty-six species of saxicolous lichens are reported for the first time from the Kodar Range. Circinaria scyphulifera is described as new to science. Aspicilia nikrapensis and Fuscidea submollis are new for Russia; Aspicilia sublapponica, Lepra monogona and Thelignya lignyota are new for southern Siberia; and 35 species of saxicolous lichens are reported for the first time for the Stanovoye Nagor'e highlands. Fuscopannaria ahlneri alredy appears in the Red Data Book of the Trans-Baikal Territory. © 2018 Sergey Chesnokov et al., published by Sciendo.We thank Evgeny Davydov (Barnaul, Russia), Dmitry Himel-brant (St. Petersburg, Russia) and Alexandr Ezhkin (Yuzh-no-Sakhalinsk, Russia) for identifying some specimens, and the reviewers for valuable help. The study was financially supported by the Russian Foundation for Basic Research (grants 14-04-01411, 15-04-05971, 16-04-01346) and by an institutional research project (“The lichen flora of the Russian Federation”, no. АААА-А18-118031590042-0) of the Komarov Botanical Institute of the Russian Academy of Sciences

Toward a Universal Model of Breaking Waves on Shallow Water

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchive

Photoproduction of electron-positron pairs in bent single crystals

The process of photoproduction of electron-positron pairs in bent single crystals is considered in this paper. In particular, it is shown that the probability of the process for gamma-quanta with energies from 100 GeV on is significantly higher than the one in an amorphous medium. A possible scenario for the experimental validation of the process is discussed and the positive features of the photoproduction in bent crystals compared to straight ones are underlined from the point of view of possible applications.Comment: 13 pages, 6 figure

Channeling of high energy beams in nanotubes

We present simulations of particle beam channeling in carbon nanotubes and evaluate the possibilities for experimental observation of channeling effect in straight and bent nanotubes at IHEP and LNF. Different particle species are considered: protons of 1.3 and 70 GeV, and positrons of 0.5 GeV. Predictions are made for the experiments, with analysis of requirements on the quality of nanosamples and resolution of the experimental set-up. Based on Monte Carlo simulations, the capabilities of nanotube channeling technique for particle beam steering are discussed

Spectral distribution in the reflection of parametric X-rays

The parametric X-ray radiation (PXR) spectra are measured on condition when the angular size of PXR cone is smaller than the angular resolution of the experiment. The PXR is generated under interaction of 50GeV proton beam with silicon crystal in Bragg geometry. The comparison of experimental data with results of developed theoretical model is presented and discusse

The measurement results of carbon ion beam structure extracted by bent crystal from U-70 accelerator

The carbon ion +6C beam with energy 25 GeV/nucleon was extracted by bent crystal from the U-70 ring. The bent angle of silicon crystal was 85 mrad. About 2*105 particles for 109 circulated ions in the ring were observed in beam line 4a after bent crystal. Geometrical parameters, time structure and ion beam structure were measure