Allergology in Ukraine

Department of Phthisiology, Pulmonology and Allergology, N. I. Pirogov National Medical University of Vinnitsa, Ukraine, Department of Otorhinolaryngology, National Medical University of Odessa, Ukraine, Department of Otorhinolaryngology, National Medical University of Kharkiv, UkraineThe article describes the present state of allergology service in the Ukraine: detection, investigation and treatment of allergic diseases as well as negative and positive aspects of the management of the service. The authors particularly point out the shortage of allergists and the fact that a large number of patients are examined and treated by general practitioners, otorhinolaryngologists and dermatologists what does not comply with the standards of diagnostics and treatment. The authors pay great attention to newly developed diagnostic methods of treatment of allergic diseases that currently do not have direct analogues in the world. These methods are the following: arranging screening for allergic diseases using plastic compact-lancet kits for prick tests preliminary filled with allergen mix and specific peroral immunotherapy of allergic diseases by means of allergen mix incorporated in sugar dragees. The new methods have proved to be efficient by experimental and clinical trials. Due to the active work of the allergists and “Ukrainian association of allergists” the number of patients using skin allergic tests has substantially increased and nearly 20 thousand patients are treated by allergen-specific immunotherapy

PMT measurements in Antares

International audienc

Peculiarities of destabilization of Alfvén modes by energetic ions in stellarators

A theory of Alfvén instabilities caused by the energetic ions in helical devices is developed, and specific examples relevant to Wendelstein-line stellarators (W7-AS, W7-X, a Helias reactor) are considered. In particular, it is shown that in stellarators there exist specific "non-axisymmetric" resonances, which may strongly affect the instabilities, especially, in W7-X and the Helias reactor, which are characterized by the rotational transform about unity. These resonances are associated with non-axisymmetric components of the magnetic field strength. Destabilization of Alfvén eigenmodes located in specific gaps of helical devices is studied. The effect of plasma rotation on these instabilities is analysed. The Doppler shift of the eigenmodes characterized by several coupled wave numbers is calculated. Instabilities of Energetic Particle Modes (EPM) are discussed. It is shown that the presence of "non-axisymmetric" resonances and additional gaps in the Alfvén continuum of stellarators result in a number of new characteristic frequencies of the EPM modes. An explanation of the temporal evolution of MHD (Alfvénic) activity observed in neutral beam experiments on W7-AS is suggested