Passive acoustic monitoring for seabed bubble flows: Case of shallow methane seeps at Laspi Bay (Black Sea).

This research quantifies the gas release rate from a natural shallow methane seep site in the Laspi Bay (Black Sea), whose origin is thermocatalytic. An adaptive single bubble identification technique was applied to analyze gas volume and release rates from passive acoustic data. Gas from the seafloor was emitted by single bubbles that occurred in clusters.

Cross-Reactive Antibodies to the NS1 Protein of Omsk Hemorrhagic Fever Virus Are Absent in the Sera of Patients with Tick-Borne Encephalitis.

Omsk hemorrhagic fever virus (OHFV) is a member of the tick-borne encephalitis virus (TBEV) complex of the family. Currently, there are no data on the cross-reactivity of antibodies to the NS1 proteins of OHFV and TBEV. Such data are of major interest for monitoring viral encephalitis of unknown etiology due to the increasing geographical distribution of OHFV.

Patterns of HIV-1 drug resistance among HIV-infected patients receiving first-line antiretroviral therapy in Novosibirsk Region, Russia.

Objectives: Antiretroviral (ARV) drugs have played a vital role in controlling the HIV-1 epidemic; however, some challenges remain. ARV drugs vary in their ability to control HIV infection, displaying differences in treatment-limiting factors and genetic barriers to resistance. The current report assesses the prevalence of HIV-1 drug resistance mutations (DRMs) among patients who failed first-line antiretroviral therapy (ART) and evaluates the genetic barrier of different regimens.

Microbial communities of stratified aquatic ecosystems of Kandalaksha Bay (White Sea) shed light on the evolutionary history of green and brown morphotypes of Chlorobiota.

Anoxygenic photoautotrophic metabolism of green sulfur bacteria of the family Chlorobiaceae played a significant role in establishing the Earth's biosphere. Two known major ecological forms of these phototrophs differ in their pigment composition and, therefore, in color: the green and brown forms. The latter form often occurs in low-light environments and is specialized to harvest blue light, which can penetrate to the greatest depth in the water column.

Pollen in water of unstable salinity: Evolution and function of dynamic apertures in monocot aquatics.

Premise: The sporoderm of seed-plant pollen grains typically has apertures in which the outer sporopollenin-bearing layer is relatively sparse. The apertures allow regulation of the internal volume of the pollen grain during desiccation and rehydration (harmomegathy) and also serve as sites of pollen germination. A small fraction of angiosperms undergo pollination in water or at the water surface, where desiccation is unlikely.

Occurrence and clinical manifestations of tick-borne rickettsioses in Western Siberia: First Russian cases of Rickettsia aeschlimannii and Rickettsia slovaca infections.

Rickettsia sibirica subsp. sibirica is a main agent of tick-borne rickettsioses in Western Siberia, Russia. Recently, the first cases of Rickettsia raoultii infection in patients hospitalized in Novosibirsk Province were described.

Cases of Q fever detected in residents of the novosibirsk region hospitalized with suspection of infections transmitted by ticks.

Coxiella burnetii is the causative agent of Q fever (coxiellosis), which, in addition to acute manifestations, often occurs in a latent form, is prone to chronic course and, in the absence of antibiotic therapy, has a high risk of disability or death. As a result of the presence of a wide range of clinical manifestations specific to other infectious diseases, the use of laboratory test methods (LTM) is required to make a diagnosis. The presence of Q fever anthropurgic foci in the Novosibirsk region was described in the 90s of the last century, but due attention to its laboratory diagnostics is not paid in this region.

Characterization of the complete genome sequence of the recombinant norovirus GII.P16/GII.4_Sydney_2012 revealed in Russia.

Noroviruses (the Caliciviridae family) are a common cause of acute gastroenteritis in all age groups. These small non-envelope viruses with a single-stranded (+)RNA genome are characterized by high genetic variability. Continuous changes in the genetic diversity of co-circulating noroviruses and the emergence of new recombinant variants are observed worldwide.

Rice Breeding in Russia Using Genetic Markers.

The article concentrates on studying tolerance to soil salinization, water flooding, and blast in Russian and Asian rice varieties, as well as hybrids of the second and third generations from their crossing in order to obtain sustainable paddy crops based on domestic varieties using DNA markers. Samples IR 52713-2B-8-2B-1-2, IR 74099-3R-3-3, and NSIC Rc 106 were used as donors of the tolerance gene. Varieties with the locus were used as donors of the flood resistance gene: Br-11, CR-1009, Inbara-3, TDK-1, and Khan Dan.

Microbial Processes and Microbial Communities in the Water Column of the Polar Meromictic Lake Bol'shie Khruslomeny at the White Sea Coast.

Microbiological, molecular ecological, biogeochemical, and isotope geochemical research was carried out at the polar Lake Bol'shie Khruslomeny at the coast of the Kandalaksha Bay, White Sea in March and September 2017. The uppermost mixolimnion was oxic, with low salinity (3-5%). The lower chemocline layer was brown-green colored, with very high content of particulate organic matter (up to 11.

Sharp water column stratification with an extremely dense microbial population in a small meromictic lake, Trekhtzvetnoe.

Located on the shore of Kandalaksha Bay (the White Sea, Russia) and previously separated from it, Trekhtzvetnoe Lake (average depth 3.5 m) is one of the shallowest meromictic lakes known. Despite its shallowness, it features completely developed water column stratification with high-density microbial chemocline community (bacterial plate) and high rates of major biogeochemical processes.

Microbial processes in the Kanda Bay, a meromictic water body artifically separated from the White Sea.

Sings of meromixis are found by means of microbiological and biogeochemical investigations in the southernn part of the Kanda Bay, an artificial water body separated front the White Sea with a railway dam. The concentration of oxygen in the bottom layer attained 1.9 mmol/L, intensity of the process of microbial sulfate reduction, 3.

Detection of causative agents of tick-borne rickettsioses in Western Siberia, Russia: identification of Rickettsia raoultii and Rickettsia sibirica DNA in clinical samples.

Objectives: The main causative agent of tick-borne rickettsioses in Siberia is considered to be Rickettsia sibirica; however, only a few cases have been genetically confirmed. Other pathogenic species of Rickettsia have been detected in ixodid ticks in Western Siberia. The aim of this study was to detect the aetiological agents of tick-borne rickettsioses in Western Siberia and compare their clinical manifestations.

Succession Processes in the Anoxygenic Phototrophic Bacterial Community in Lake Kislo-Sladkoe (Kandalaksha Bay, White Sea).

The community of anoxygenic phototrophic bacteria (APB) in the water column of Lake Kislo- Sladkoe (Kandalaksha Bay, White Sea), which has recently become separated from the sea, was investigated in March-April 2012, March-April 2013, and in September 2013. The lake, which was previously considered meromictic, was in fact mixed and was strongly affected by the sea. In winter the lake is sometimes washed off with seawater, and this together with the seasonal cycles of succession processes determines the succession of the community.

CLINICAL AND LABORATORY FEATURES OF ACUTE VIRAL GASTROENTERITIS IN ADULTS, RESIDENTS OF NOVOSIBIRSK.

Unlabelled: The aim of this study was to determine the frequency and the clinical and laboratory features of acute viral gastroenteritis in adult patients the residents of Novosibirsk.

Materials And Methods: A total of 363 patients aged 16 to 82 years hospitalized with a diagnosis of"acure gastroenteriris" in the winter-spring season 2016 and with no evidence of immunosuppression were examined. In addition to generally accepted diagnostic techniques faeces were investigated using polymerase chain reaction for the detection and differentiation group A and C rotaviruses (HRVA and HRVC), I norovirus genogroup II (HNoV Gil) and astroviruses (HAstV) with applying the original set of specific primers.

[Cryptomonad alga Rhodomonas sp. (Cryptophyta, Pyrenomonadaceae) bloom in the redox zone of the basins separating from the White Sea].

Bloom of a cryptomonad alga Rhodomonas sp. (Cryptophyta, Pyrenomonadaceae) was observed in the chemocline of saline basins separating from the White Sea, resulting in red coloration of the relevant water layer. According to the sequence of the 18S nuclear rRNA gene, this species was identical to Rhodomonas sp.

[Features of connective tissue dysplasia and prognosis of chronic gastroduodenal diseases in children of school age].

Compatibility of such signs, as not differentiated connective tissue dysplasia and chronic gastroduodenitis is considered. 170 patients of school age with the confirmed diagnosis chronic gastroduodenitis are surveyed with the purpose of revealing signs of connective tissue dysplasia. It is shown, that symptoms of connective tissue dysplasia meet more often at children with chronic gastroduodenitis, than at children without inflammatory gastroduodenal disease.

[137Cs distribution and accumulation in organs and tissues of sheep in the event of chronic consumption of contaminated fodder in the area of the Chernobyl NPP accident].

The regularities of 137Cs distribution and accumulation in organs and tissues of sheep on a farm located in the Chernobyl accidental zone were experimentally estimated. The distribution pattern of 137Cs concentration in organs and tissues is found to depend on the duration of the radionuclide uptake with the ration. During the first 24 h the highest 137Cs concentration is reported in the parenchymal organs; starting from day 30 muscular tissue and kidneys rank first, whereas in the other organs and tissues 137Cs concentration is 1.

[Adhesion and migration functions of peripheral blood leukocytes in children with chronic gastroduodenitis].

The goal of the research was to study the peculiarities of adhesion and migration characteristics of leukocytes in children with chronic gastroduodenitis as compared to patients with functional dyspepsia and healthy children. An increase in the values of spontaneous adhesion and migration was noted in lymphocytes, monocytes and neutrophils during the exacerbation period of gastroduodenitis, which correlates with clinical manifestations, data of the morphological study and intragastric pH-metry. At the same time, a reduction in the functional reserve of leukocytes and their sensibility to adhesion stimulators.

The use of hexacyanoferrates in different forms to reduce radiocaesium contamination of animal products in Russia.

Hexacyanoferrates have been identified as highly effective radiocaesium binders which effectively reduce radiocaesium uptake and transfer to milk and meat. In Russia a hexacyanoferrate called ferrocyn has been produced for use as a countermeasure. In 1989-1992, experiments were undertaken in Russia to study the effectiveness of four different ferrocyn materials as 137Cs binders, their potential toxicity, effect on production rates of cow milk, effect on animal health and ease of implementation in routine agricultural practice.

[Chemiluminescent reaction of leukocytes stimulated with different agents in patients with erysipelas].

Forty-three patients with erysipelas and 10 donors were examined using chemiluminescent analysis in the presence of latex and staphylococcal reagent containing protein A. Staphylococcal protein A proved to be a more potent activator of oxygen metabolites than latex. Heterogeneity of chemiluminescent response of leukocytes stimulated by different agents makes it possible to assess the functional reserve of neutrophils and differentiate between the hyper-, normo-, and hyporeactive forms of erysipelas.