Results of the Triennial Monitoring over the Ship’s Ballast Water at the Ports of the Rostov-Region

Demonstrated are the results of microbiological monitoring over the ship’s ballast water at the sea ports of the Rostov region. Analyzed for the presence of Vibrio cholerae are the samples of the ship’s ballast water collected within the period of May-September 2010-2012, a total of 179 samples collected from 127 ships. Among 30 V. cholerae non O1/ non O139 strains isolated in 2010-2011 only 13 have been identified serologically. Application of MALDI-TOF mass spectrometry in 2012 has enhanced informational capacity of the investigations. It has expanded the range and increased the frequency of bacteriological findings. The detection of vibrios implies possibility of V. cholerae importation into the aquatic area of Azov Sea

Модель беспроводной сети передачи данных динамической информационно-управляющей системы

The approach to imitation modeling the telecommunication network of multipurpose informationoperating system of special purpose is presented. Modeling the digital communication network with a packet transmission of messages is based on the aggregate approach of the description of complex dynamic systems. The approach considers the possibility to use adaptive properties of system elements and the basic functions of mobile network knots, and also effective methods of inter-elements interaction. An adequacy of the model of telecommunication system was checked in real field conditions.Представлен подход к имитационному моделированию телекоммуникационной сети многофункциональной информационно-управляющей системы специального назначения. Моделирование цифровой сети связи с пакетной передачей сообщений основывается на агрегативном подходе к описанию сложных динамических систем, который в отличие от классического подхода учитывает возможность использования адаптивных свойств элементов системы и основных функций, выполняемых подвижными сетевыми узлами, а также принятые эффективные методы межэлементного взаимодействия. Адекватность полученной модели телекоммуникационной системы специального назначения проверялась в условиях перемещения по местности на реальной сети широкополосного радиодоступа

Results of Application of the New Nutrient Media Set for Cholera Diagnostics within the Frames of the Special Tactical Training Exercises for Specialized Anti-Epidemic Team

Carried out is approbation of the new nutrient media set for cholera diagnostics on the basis of bakers' yeast pancreatic digest within the frames of the special tactical training exercises for specialized anti-epidemic team (SAET). It is demonstrated that the developed nutrient media set compare favourably with its analogues, commonly used for practical procedures; and its constituent media have a potential to be included into the SAET mobilization reserve

Annama H chondrite-Mineralogy, physical properties, cosmic ray exposure, and parent body history

The fall of the Annama meteorite occurred early morning (local time) on April 19, 2014 on the Kola Peninsula (Russia). Based on mineralogy and physical properties, Annama is a typical H chondrite. It has a high Ar-Ar age of 4.4 Ga. Its cosmic ray exposure history is atypical as it is not part of the large group of H chondrites with a prominent 7-8 Ma peak in the exposure age histograms. Instead, its exposure age is within uncertainty of a smaller peak at 30 +/- 4 Ma. The results from short-lived radionuclides are compatible with an atmospheric pre-entry radius of 30-40 cm. However, based on noble gas and cosmogenic radionuclide data, Annama must have been part of a larger body (radius >65 cm) for a large part of its cosmic ray exposure history. The Be-10 concentration indicates a recent (3-5 Ma) breakup which may be responsible for the Annama parent body size reduction to 30-35 cm pre-entry radius.Peer reviewe

Proof of projective Lichnerowicz conjecture for pseudo-Riemannian metrics with degree of mobility greater than two

We prove an important partial case of the pseudo-Riemannian version of the projective Lichnerowicz conjecture stating that a complete manifold admitting an essential group of projective transformations is the round sphere (up to a finite cover).Comment: 32 pages, one .eps figure. The version v1 has a misprint in Theorem 1: I forgot to write the assumption that the degree of mobility is greater than two. The versions v3, v4 have only cosmetic changes wrt v

Cholera: Trends in the Development of the Epidemic Process in 2021, Forecast for 2022

The aim of the work was to summarize the results of cholera monitoring in 2021, to assess current trends in the development of the epidemic process, and to predict the epidemiological situation in the Russian Federation for 2022. It was established that within the period of 2012–2021, 4117264 cases of cholera with the spread of infection across 83 countries on all continents were registered in the world and there was a downward trend in the incidence in Asia and Africa. The dynamics of monthly morbidity in 2021 was associated with emergencies as factors of epidemiological risk. Epidemics and outbreaks of cholera were documented against the background of COVID-19 pandemic and laid a double burden on healthcare systems. At the same time, based on the overview of the results of cholera monitoring in the constituent entities of the Russian Federation, it was shown that the forecast of epidemic well-being given for 2021 was fully justified. It has been determined that the increase in the number of non-toxigenic strains of Vibrio cholerae O1 (67) isolated from water bodies compared to 2020 (25) is mainly due to the appurtenance of a number of isolates to clonal complexes. The study of phylogenetic relation has demonstrated that the detection of strains with genotypes which were previously identified in the isolates evidences the persistence potential. The identification of strains with new genotypes, which were earlier established in the strains circulating in other territories, pointed at the possibility of the occasional importations. The forecast of the epidemiological situation on cholera in Russia for 2022 is associated with the continuous existence of risks of introduction. If these epidemiological risks are not realized, a favorable epidemiological situation is predicted regarding this infection in the country. It is expected that the detection of epidemiologically insignificant strains of V. cholerae O1 in environmental water bodies, along with their clones and/or clonal complexes, will remain, including strains that may be an etiological factor in sporadic cases or outbreaks of disease

P2Y receptors and pain transmission

It is widely accepted that the most important ATP receptors involved in pain transmission belong to the P2X3 and P2X2/3 subtypes, selectively expressed in small diameter dorsal root ganglion (DRG) neurons. However, several types of the metabotropic ATP (P2Y) receptors have also been found in primary afferent neurons; P2Y1 and P2Y2 receptors are typically expressed in small, nociceptive cells. Here we review the results available on the involvement of P2Y receptors in the modulation of pain transmission

A model of a wireless data network of dynamic information-controlling system

The approach to imitation modeling the telecommunication network of multipurpose informationoperating system of special purpose is presented. Modeling the digital communication network with a packet transmission of messages is based on the aggregate approach of the description of complex dynamic systems. The approach considers the possibility to use adaptive properties of system elements and the basic functions of mobile network knots, and also effective methods of inter-elements interaction. An adequacy of the model of telecommunication system was checked in real field conditions