Comparison of X-ray sources on the basis of bremsstrahlung and parametric radiations

The comparative analysis of the X-ray tube and source on the basis of parametric X-ray radiation has been carried out. The parametric X-ray radiation intensity of source on the basis of compact linear accelerator with beam energy of 6 MeV and current of 100 ?A is compared with intensity of ordinary X-ray tube. The performance of slow change of parametric X-ray line energy in a wide range from 6 to 130 keV with line width of about 300 eV may provide the good contrast of received image and decreases the radiation dos

Comparison of X-ray sources on the basis of bremsstrahlung and parametric radiations

The comparative analysis of the X-ray tube and source on the basis of parametric X-ray radiation has been carried out. The parametric X-ray radiation intensity of source on the basis of compact linear accelerator with beam energy of 6 MeV and current of 100 ?A is compared with intensity of ordinary X-ray tube. The performance of slow change of parametric X-ray line energy in a wide range from 6 to 130 keV with line width of about 300 eV may provide the good contrast of received image and decreases the radiation dos

DECORATIVE AND APPLIED ART IN MODERN DESIGN EDUCATION

В статье рассматриваются проблемы преподавания декоративно-прикладного искусства в современном дизайн-образованииThe article deals with the problems of teaching arts and crafts in modern design educatio

Parametric X-Ray detection in UA9 experiment

Parametric X-Ray radiation (PXR) is a phenomenon due to the interaction of charged particles inside a crystal well ordered lattice. The passage of the particles inside the potential field into the crystal causes small deflections which result in radiation emissions. By this way the emission is diffracted by the crystal planes. In this work the results of the last five years of activity on PXR detection during UA9 experiment are reported. The beam provided in H8 area, protons or Pb ions, is channeled inside different crystals and PXR emission is detected

Spectral structure of a polycapillary lens shaped X-ray beam

Polycapillary X-ray optics is widely used in X-ray analysis techniques to create a small secondary source, for instance, or to deliver X-rays to the point of interest with minimum intensity losses [1]. The main characteristics of the analytical devices on its base are the size and divergence of the focused or translated beam. In this work, we used the photon-counting pixel detector ModuPIX to study the parameters for polycapillary focused X-ray tube radiation as well as the energy and spatial dependences of radiation at the focus. We have characterized the high-speed spectral camera ModuPIX, which is a single Timepix device with a fast parallel readout allowing up to 850 frames per second with 256•256 pixels and a 55 [mu]m pitch defined by the frame frequency. By means of the silicon monochromator the energy response function is measured in clustering mode by the energy scan over total X-ray tube spectrum

Global gene expression analysis of cross-protected phenotype of pectobacterium atrosepticum

© 2017 Gorshkov et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.The ability to adapt to adverse conditions permits many bacterial species to be virtually ubiquitous and survive in a variety of ecological niches. This ability is of particular importance for many plant pathogenic bacteria that should be able to exist, except for their host plants, in different environments e.g. soil, water, insect-vectors etc. Under some of these conditions, bacteria encounter absence of nutrients and persist, acquiring new properties related to resistance to a variety of stress factors (cross-protection). Although many studies describe the phenomenon of cross-protection and several regulatory components that induce the formation of resistant cells were elucidated, the global comparison of the physiology of cross-protected phenotype and growing cells has not been performed. In our study, we took advantage of RNA-Seq technology to gain better insights into the physiology of cross-protected cells on the example of a harmful phytopathogen, Pectobacterium atrosepticum (Pba) that causes crop losses all over the world. The success of this bacterium in plant colonization is related to both its virulence potential and ability to persist effectively under various stress conditions (including nutrient deprivation) retaining the ability to infect plants afterwards. In our previous studies, we showed Pba to be advanced in applying different adaptive strategies that led to manifestation of cell resistance to multiple stress factors. In the present study, we determined the period necessary for the formation of cross-protected Pba phenotype under starvation conditions, and compare the transcriptome profiles of non-adapted growing cells and of adapted cells after the cross-protective effect has reached the maximal level. The obtained data were verified using qRT-PCR. Genes that were expressed differentially (DEGs) in two cell types were classified into functional groups and categories using different approaches. As a result, we portrayed physiological features that distinguish cross-protected phenotype from the growing cells

ANTIBACTERIAL THERAPY OF INFECTED PANCREATIC NECROSIS IN A MULTIFIELD SURGICAL HOSPITAL

The work is based, on the analysis of the results of complex conservative and surgical treatment of 50 patients with infected, forms of pancreatic necrosis, who were treated in surgical wards of Republican, hospital № 2 — Center of Emergency Medical Care of Sakha Republic (Yakutia) during the period of 2008—2011 years. During the research it became possible to adapt and improve the scheme of antibacterial therapy applied in treatment of pancreatogenic infections in a multifield surgical hospital. Carrying out of monitoring of antibacterial resistance and efficiency of antibacterial therapy substantially raised probability of a favorable outcome in treatment of patients with, pancreatogenic infection

Influence of temperature gradient on diffracted X-ray spectrum in quartz crystal

In this work characteristics of hard X-ray (with energy higher than 30 keV) were investigated. In the experiment we measured spectra of X-ray reflected by a quartz monocrystal in Laue geometry under influence of the temperature gradient. The measurements were made by the spectrometer BDER-KI-11K with 300 eV resolution on the 17.74 keV spectral line of Am241 and the spectrometer XR-100CR with 270 eV resolution on the same spectral line. An existence of temperature gradient leads to increasing of the diffracted beam intensity. The intensity was measured dependently on the temperature of one of the edge of the crystal

Chronic Triple Infection with Hepatitis B, C, and D Viruses in the Republic of Sakha (Yakutia)

The purpose of this work was to study the features of the clinical course of mixed infections with hepatitis B+C+D viruses in the Republic of Sakha (Yakutia) (RS(Y)). Materials and Methods: The incidences of these infections were studied in the infectious disease department of the Yakutsk City Clinical Hospital. A total of 74 patients with chronic infection with hepatitis B, C, and D viruses were analyzed. The following markers of HBV (HBsAg, HBeAg, anti-HBcIgG, HBV DNA), HCV (anti-HCV) and HDV (anti-HDV, HDV RNA) were detected. According to PCR (n=35), HCV-RNA was detected in 29(82.8%) patients. In 65.8% of cases, HCV-RNA replication was observed in the absence of HDV-DNA. Mono-replication of HBV (HBV-DNA+, HCV-RNA-) was detected in 17.1% patients, mono-replication of HCV (HBV-DNA-, HCV-RNA+) in 65.7% patients and mixed replication of viruses C, D and/or G (HBV-DNA-, HCV-RNA+, HDV-RNA+/HGV-RNA+) in 17.1% patients. Results: The comparison of biochemical parameters of patients with chronic mixed hepatitis showed that more expressed changes are observed with the mixed replication than with the mono-replicative form of hepatitis