High-energy threshold reaction rates on 0.8 GeV proton-irradiated thick Pb-target

This works presents results of activation-aided determination of threshold reaction rates in 92 209Bi, natPb, 197Au, 181Ta, 169Tm, natIn, 93Nb, 64Zn, 65Cu, 63Cu, 59Co, 19F, and 12C samples and in 121 27Al samples. All the samples were aligned with the proton beam axis inside and outside the demountable 92-cm thick Pb target of 15-cm diameter assembled of 23 4-cm thick discs. The samples were placed on 12 target disks to reproduce the long axis distribution of protons and neutrons. In June 2006, the target was exposed for 18 hours to a 800-MeV proton beam extracted from the ITEP U-10 accelerator. The proton fluence and the proton beam shape were determined using the 27Al(p,x)7Be monitor reaction. The reaction rates were determined by the direct gamma-spectrometry techniques. In total, 1196 gamma-spectra have been measured, and about 1500 reaction rates determined. The measured reaction rates were simulated by the MCNPX code using the following databases: ENDF/B6 for neutrons below 20 MeV, MENDL2 for 20-100 MeV neutrons, and MENDL2P for proton cross sections up to 200 MeV. An acceptable agreement of simulations with experimental data has been found.Comment: 4 pages, 5 figures, 3 tables, only pdf file, to be published in Proc. Int. Conf. on Nucl. Data for Sci. and Technology (ND2007), Nice, France, April 22-27, 200

Residual nuclide formation in 206,207,208,nat-Pb and 209-Bi induced by 0.04-2.6 GeV Protons as well as in 56-Fe induced by 0.3-2.6 GeV Protons

5972 independent and cumulative yields of radioactive residuals nuclei have been measured in 55 thin 206,207,208,nat-Pb and 209-Bi targets irradiated by 0.04, 0.07, 0.10, 0.15, 0.25, 0.6, 0.8, 1.2, 1.4, 1.6, and 2.6 GeV protons. Besides, 219 yields have been measured in 0.3, 0.5, 0.75, 1.0, 1.5, and 2.6 GeV proton-irradiated 56-Fe target. The protons were extracted from the ITEP U-10 synchrotron. The measured data are compared with experimental results obtained elsewhere and with theoretical calculations by LAHET, MCNPX, CEM03, LAQGSM03, CASCADE, CASCADO, and LAHETO codes. The predictive power was found to be different for each of the codes tested, but was satisfactory on the whole in the case of spallation products. At the same time, none of the codes can de-scribe well the product yields throughout the whole product mass range, and all codes must be further improved.Comment: 4 pages, 4 figures, 2 tables, only pdf file, to be published in Proc. Int. Conf. on Nucl. Data for Sci. and Technology (ND2007), Nice, France, April 22-27, 20

Russian representation of the Chinese national character (second half of XIX - early XX cen)

В статье рассматриваются особенности становления и развития представлений русского общества XIX – начала XX вв. о Китае и его жителях. Целью исследования стал анализ специфики представлений русских о китайском национальном характере. Исследование выполнено в рамках научного направления – имагологии.The article describes the formation and development specifics of the views about China and its inhabitants in Russian society of the 19th – early 20th century. The aim of the study was to analyze the specifics of Russian representations of the Chinese national character. The research is performed within the framework of the imagology research prospect

Features of atomic and molecular beams passage through capillary systems in the presence of evanescent light waves

A model of the transverse cooling of atoms in the field of a surface light wave inside a glass capillary is considered. The attenuation coefficient for transverse oscillations of atom in a microcapillary is estimated, and the length of effective atom cooling is calculated. A 3D model is constructed. The possibility for the practical application of this phenomenon both to develop the technology of atomic lithography and to fabricate the nanostructures is considered

Аналіз структури анестезіологічного забезпечення операції “кесарів розтин” у Вінницькій області за 2014–2015 рр.

Нами була зібрана та проаналізована інформація про всі випадки оперативного розродження шляхом кесаревого розтину в 2014 р. (всього 2740 випадків) та в 2015 р. (всього 2526 випадків) у Вінницькій області. Спінальна анестезія з одноразовим введенням розчину місцевого анестетику залишилася провідною серед інших реґіонарних методів анестезіологічного забезпечення операції кесаревого розтину. Порівняно з 2014 р., частота застосування різних варіантів нейроаксіальної анестезії при планових оперативних пологах у 2015 р. збільшилася в 1,8 разів (р < 0,05), в ургентних випадках – на 8,8 % (р < 0,05). Використання нейроаксіальної анестезії є частішим у великих акушерських стаціонарах м. Вінниці та Вінницької області, ніж у малих та середніх, котрі забезпечують менше 1000 пологів на рік