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Fiber-enriched diet helps to control symptoms and improves esophageal motility in patients with non-erosive gastroesophageal reflux disease

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World Journal of Gastroenterology 2018年第21期24卷 2291-2299页

作者： sergey Morozov Vasily Isakov Mariya Konovalova department of Gastroenterology and Hepatology Federal Research Center of NutritionBiotechnologyand Food SafetyMoscow 115446Russia

AIM To investigate the effect of dietary fiber on symptoms and esophageal function testing parameters in nonerosive gastroesophageal reflux disease(GERD)(NERD) *** Thirty-six NERD patients with low(< 20 g/d) dietary fiber intake were enrolled in the study. They were examined with the use of symptom questionnaire(GERD-Q), highresolution esophageal manometry, 24-h esophageal p Himpedance examinations, and food frequency questionnaire before and after 10 d of usual diet supplemented by psyllium 5.0 g TID. Complete data of 30 patients were available to the final analysis. The obtained results were analyzed with the use of non-parametric statistics(Wilcoxon matched pairs test). RESULTS The number of patients experiencing heartburn was less(93.3% at baseline vs 40% at the end of the study, P < 0.001) and the GERD-Q score decreased(mean ± SD: 10.9 ± 1.7 vs 6.0 ± 2.3, P < 0.001) after the treatment period. Minimal resting lower esophageal sphincter(LES) pressure increased from 5.41 ± 10.1 to 11.3 ± 9.4 mm Hg(P = 0.023), but no change in residual LES pressure and mean resting pressure was found. Total number of gastroesophageal refluxes(GER) decreased from 67.9 ± 17.7 to 42.4 ± 13.5(P < 0.001) predominantly by acid and weak acid types of GERs. No significant change in mean esophageal p H and % of time p H < 4 was registered. Maximal reflux time decreased from 10.6 ± 12.0 min to 5.3 ± 3.7 min(P < 0.05). CONCLUSION Fiber-enriched diet led to a significant increase of minimal lower esophageal sphincter resting pressure, a decrease of number of gastroesophageal refluxes, and a decrease of heartburn frequency per week in NERD.

关键词： gastroesophageal reflux disease psyllium gastroesophageal reflux lower esophageal sphincter relaxation esophageal motility Dietary fiber heartburn non-erosive gastroesophageal reflux disease

A Semantic Approach to Workflow Management and Reuse for Research Problem Solving

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Data Intelligence 2022年第2期4卷 439-454页

作者： Nikolay A.Skvortsov sergey A.Stupnikov Federal Research Center"Computer Science and Control"of the Russian Academy of Sciences Moscow 119333Russia

The investigation proposes the application of an ontological semantic approach to describing workflow control patterns,research workflow step patterns,and the meaning of the workflows in terms of domain *** approach can provide wide opportunities for semantic refinement,reuse,and composition of *** reasoning allows verifying those compositions and implementations and provides machine-actionable workflow manipulation and problem-solving using *** described approach can take into account the implementation of workflows in different workflow management systems,the organization of workflows collections in data infrastructures and the search for them,the semantic approach to the selection of workflows and resources in the research domain,the creation of research step patterns and their implementation reusing fragments of existing workflows,the possibility of automation of problemsolving based on the reuse of *** application of the approach to CWFR conceptions is proposed.

关键词： Workflow reuse Workflow patterns,Domain ontology Canonical workflow framework for research,CWFR Principles of FAIR data

On Modifications of Continuous and Discrete Maximum Principles for Reaction-Diffusion Problems

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Advances in Applied Mathematics and Mechanics 2011年第1期3卷 109-120页

作者： Istvan Farago sergey Korotov Tamas Szabo Department of Applied Analysis and Computational Mathematics Eotvos Lorand UniversityH–1117BudapestPazmany P.s.1/c.Hungary BCAM-Basque Center for Applied Mathematics Bizkaia Technology ParkBuilding 500E–48160 DerioBasque CountrySpain

In this work,we present and discuss some modifications,in the form of two-sided estimation(and also for arbitrary source functions instead of usual sign-conditions),of continuous and discrete maximum principles for th... 详细信息

关键词： Reaction-diffusion problem maximum principle discrete maximum principle monotone matrix two-sided a priori estimation code validification

Dynamics of magnetic flux tubes and IR-variability of young stellar objects

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Research in Astronomy and Astrophysics 2018年第8期18卷 13-20页

作者： sergey Khaibrakhmanov Alexander Dudorov Andrey Sobolev Kourovka Astronomical Observatory Ural Federal University Theoretical Physics Department Chelyabinsk State University

We simulate the dynamics of slender magnetic flux tubes （MFTs） in the accretion disks of T Tauri stars. The dynamical equations of our model take into account aerodynamic and turbulent drag forces, and the radiative heat exchange between the MFT and ambient gas. The structure of the disk is calculated with the help of our MHD model of the accretion disks. We consider the MFTs formed at distances of 0.027 - 0.8 au from the star with various initial radii and plasma betas β0. The simulations show that MFTs with a weak magnetic field （β0 = 10） rise slowly with speeds less than the speed of sound. MFTs withβ0 = 1 form an outflowing magnetized corona above the disk. Strongly magnetized MFTs （β0 = 0.1） can cause outflows with velocities 20 - 50 km s-1. The tubes rise periodically over times from several days to several months according to our simulations. We propose that periodically rising MFTs can absorb stellar radiation and contribute to the IR-variability of young stellar objects.

关键词： accretion disks- instabilities- magnetohydrodynamics (MHD) - protoplanetary disks

Distribution and Status of the Pallas’s Gull Ichthyaetus ichthyaetus(Pallas,1773)in the Reservoirs of the Palearctic:Review

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Research in Ecology 2023年第1期5卷 23-34页

作者： sergey Vladimirovich Golubev Fish Ecology Laboratory Papanin Institute for Biology of Inland WatersRussian Academy of SciencesBorok152742Russia

The Pallas’s Gull Ichthyaetus ichthyaetus is a piscivorous gull,some local populations of which are rare and *** review presents data on the status and distribution of the Pallas’s Gull in the reservoirs of the Palearctic-water bodies in which the water level is controlled by *** aim of the study was to assess the current state of the species in the reservoirs of the *** review was based on 1080 publications found in the search engines Yandex,Google,Google Scholar,*** the last 35 years,the Pallas’s Gull has been found in 63 reservoirs of the *** has been established in 11 reservoirs,breeding has not been established in 43 reservoirs,and birds were present in 9 reservoirs,but the status was not ***-thirds of the reservoirs where the gull was recorded or bred were located in the European part and only 1/3 in *** is assumed that up to 5000 adults(0.45%-4.0%of the global population of the species)breed annually in the reservoirs of the Palearctic,and the reservoirs are not the main habitats for maintaining and reproducing the population of the *** majority of the breeding population reproduces in natural water bodies,and the reservoirs of the Palearctic are important for the maintenance of non-breeding *** of presumed breeding and new breeding colonies in reservoirs north of the historical range of the species has been established on the Russian Plain,in the Urals and *** reservoirs of Russia play a leading role in providing breeding sites for the species in water bodies of this *** analysis of the data allows us to state the important and increased role of reservoirs in the modern distribution and expansion of the range of the Pallas’s Gull in the Palearctic.

关键词： Great Black-headed Gull Damming

Shadowing Homoclinic Chains to a Symplectic Critical Manifold

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Analysis in Theory and Applications 2021年第1期37卷 1-23页

作者： sergey Bolotin Moscow Steklov Mathematical Institute Russian Academy of SciencesMoscow119991Russia

We prove the existence of trajectories shadowing chains of heteroclinic or-bits to a sy mplectic normally hyperbolic critical manifold of a Hamiltonian *** results are quite different for real and complex *** results are applied to Hamitonian systems depending on a parameter which slowly changes with rateε.If the frozen autonomous system has a hyperbolic equilibrium possessing trans-verse homoclinic orbits,we construct trajectories shadowing homoclinic chains with energy having quasirandom jumps of orderεand changing with average rate of orderε|lnε|.This provides a partial multidimensional extension of the results of ***-tadt on the destruction of adiabatic invariants for systems with one degree of freedom and a figure 8 separatrix.

关键词： Hamiltonian system homoclinic orbit shadowing

Clustering and presorting for parallel burrows wheeler-based compression

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International Journal of Modeling, Simulation, and Scientific Computing 2021年第6期12卷 75-88页

作者： sergey Voronin Eugene Borovikov Raqibul Hasan Intelligent Automation Inc.RockvilleMDUSA

We describe practical improvements for parallel BWT-based lossless compressors frequently utilized in modern day big data *** propose a clustering-based data permutation approach for improving compression ratio for data with significant alphabet variation along with a faster string sorting approach based on the application of the O(n)complexity counting sort with permutation reindexing.

关键词： Lossless data compression Burrows–Wheeler transform data permutation fast string sorting

GIS-based cost distribution analysis of new consumer connections to an urban power grid

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Geo-Spatial Information Science 2015年第4期18卷 183-192页

作者： sergey V.KOSYAKOV Artur M.SADYKOV Department of Software Engineering Ivanovo State Power Engineering UniversityIvanovoRussia Department of Geographical Information Systems Ivanovo State Power Engineering UniversityIvanovoRussia

In this paper,we propose a method of cost distribution analysis of new consumer connections to a city power grid by accounting for spatial restrictions and characteristics of existing *** practice,the calculation of connection costs for each new consumer includes the network design and financial *** suggest that connection costs should be calculated for the whole city based on the normative parameters at the stage when the object location is selected by investors and when power grid development is planned by power *** proposed method enables the modeling of new power line connection routes from every parcel of city land to possible points of connection to the operating networks based on the raster design of the *** optimal path is chosen by one criterion consisting of two components:the costs of both laying new power lines and providing sufficient power reserve in the chosen network connection *** as a computer program,the method has been used to calculate the costs of connections to low-voltage power lines.

关键词： GIS least-cost path analysis grid-connections urban power grid

Determination of Vertices and Edges in a Parametric Polytope to Analyze Root Indices of Robust Control Quality

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International Journal of Automation and computing 2019年第6期16卷 828-837页

作者： sergey Gayvoronskiy Tatiana Ezangina Ivan Khozhaev Viktor Kazmin School of Computer Science and Robotics National Research Tomsk Polytechnic University

The research deals with the methodology intended to root robust quality indices in the interval control system, the parameters of which are affinely included in the coefficients of a characteristic polynomial. To determine the root quality indices we propose to depict on the root plane not all edges of the interval parametric polytope(as the edge theorem says), but its particular vertex-edge route. In order to define this route we need to know the angle sequence at which the edge branches depart from any integrated pole on the allocation area. It is revealed that the edge branches can integrate into the route both fully or partially due to intersection with other branches. The conditions which determine the intersection of one-face edge images have been proven. It is shown that the root quality indices can be determined by its ends or by any other internal point depending on a type of edge branch. The conditions which allow determining the edge branch type have been identified. On the basis of these studies we developed the algorithm intended to construct a boundary vertex-edge route on the polytope with the interval parameters of the system. As an illustration of how the algorithm can be implemented, we determined and introduced the root indices reflecting the robust quality of the system used to stabilize the position of an underwater charging station for autonomous unmanned vehicles.

关键词： Robust control parametric uncertainty parametric polytope interval parameters system analysis