Investigation of two-photon 2s -> 1s decay in one-electron and one-muon ions

We have studied the radiative decay of the 2s state of one-electron and one-muon ions, where the two-photon mechanism plays an important role. Due to the nuclear size corrections the radiative decay of the 2s state in the electron and muon ions is qualitatively different. Based on the accurate relativistic calculation, we introduced a two-parameter approximation, which makes it possible to describe the two-photon angular-differential transition probability for the polarized emitted photons with high accuracy. The emission of photons with linear and circular polarizations was studied separately. We also investigated the transition probabilities for the polarized initial and final states. The investigation was performed for ions with atomic numbers 1 < Z < 120.Comment: 18 pages, 8 figure

Nutritional status in patients with cystic fi brosis before and after lung transplantation

This review focuses on the nutritional status of patients with cystic fibrosis, systematic approach to monitoring and nutritional intervention in undernourished patients, and the maintenance of nutritional status before/after lung transplantation

ПАРЕНТЕРАЛЬНОЕ ПИТАНИЕ У ПАЦИЕНТОВ В КРИТИЧЕСКИХ СОСТОЯНИЯХ: ИСТОРИЯ СТАНОВЛЕНИЯ И РАЗВИТИЯ ПРОБЛЕМЫ

Parenteral nutrition in patients in critical conditions: the history of formation and development problem.Парентеральное питание у пациентов в критических состояниях: история становления и развития проблемы

Progress in Development of Kharkov X-Ray Generator Nestor

The sources of the X-rays based on Compton scattering of intense Nd:YAG laser beam on electron beam circulating in a storage ring with beam energy 43-225 MeV is under construction in NSC KIPT. In the paper the progress in development and construction of Kharkov X-ray generator NESTOR is presented. The current status of the main facility system design and development are described. New scheme and main parameters of injection system are presented. The status of power supply system and control system is described. The facility is going to be in operation in the middle of 2007 and generated X-rays flux is expected to be of about 10{sup 13} phot/s

PARENTERAL NUTRITION IN PATIENTS IN CRITICAL CONDITIONS: THE HISTORY OF FORMATION AND DEVELOPMENT PROBLEM

Parenteral nutrition in patients in critical conditions: the history of formation and development problem