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Changes in filtration and capacitance properties of highly porous reservoir in underground gas storage:CT-based and geomechanical modeling

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第8期16卷 2982-2995页

作者： Valerii Khimulia Vladimir Karev Yury kovalenko Svyatoslav Barkov Ishlinsky Institute for Problems in Mechanics RAS Moscow119526Russia

The paper presents the results of comprehensive studies of filtration and capacitance properties of highly porous reservoir rocks of the aquifer of an underground gas storage *** geomechanical part of the research included studying the dependence of rock permeability on the stress-strain state in the vicinity of the wells,and physical modeling of the implementation of the method of increasing the permeability of the wellbore zone-the method of directional unloading of the *** digital part of the research included computed tomography(CT)-based computer analysis of the internal structure,pore space characteristics,and filtration properties before and after the *** to the results of physical modeling of deformation and filtration processes,it is found that the permeability of rocks before fracture depends on the stress-strain state insignificantly,and this influence is ***,when downhole pressure reaches 7-8 MPa,macrocracks in the rock begin to grow,accompanied by irreversible permeability ***,geodesic tortuosity and permeability values were obtained based on digital studies and numerical modeling.A weak degree of transversal anisotropy of the filtration properties of rocks was *** on the analysis of pore size distribution,pressure field and flow velocities,high homogeneity and connectivity of the rock pore space is *** absence of pronounced changes in pore space characteristics and pore permeability after non-uniform triaxial loading rocks was *** the basis of geometrical analysis of pore space,the reasons for weak permeability anisotropy were *** filtration-capacitance properties obtained from the digital analysis showed very good agreement with the results of field and laboratory *** physical modeling has confirmed the efficiency of application of the directional unloading method for the reservoir under *** necessary parameters of its application were calcu

关键词： Permeability anisotropy Reservoir porosity Rocks computed tomography(CT) Digital core analysis Filtration flow numerical modeling

Preliminary results of lithological and palynological study of Svobodny,ancient man’s parking relic in Amur region,Russia

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Global Geology 2024年第3期27卷 121-131页

作者： kovalenko S.V. Kezina T.V. Kryuchko E.I. Mironov M.A. Center for the Preservation of Historical and Cultural Heritage of the Amur Region Blagoveshchensk 675000Russia Amur State University Blagoveshchensk 675027Russia

A single-layer monument Svobodny,ancient man's parking lot-1,discovered in 2021 as part of archaeological work to study the zone of economic development of the Amur region was investigated lithologically and *** on the results of geomorphological analysis of the territory,the study of artifacts,palynological data,as well as analogy with previously identified and sufficiently studied relics in the region,the existence of the Osinoozersk late Neolithic culture in this territory is *** time of its expansion in the Amur region is determined within the framework of the second half of theⅣmillennium BC to the first half of theⅡmillennium *** preliminary results of palynological analysis suggest the existence of a temperate climate here,was close to the modern one,which does not contradict the reconstructed paleoclimate and environments of the region during the Holocene period.

关键词： Osinoozersk culture palynological spectra Zeya River paleoclimate

Genetic factors of reproductive disorders in female

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Reproductive and Developmental Medicine 2024年第3期8卷 186-195页

作者： Inna I.Mordovina Alina K.Chebanu Maksim Y.Donnikov Tatiana A.Sinyukova Lyudmila V.kovalenko Larisa D.Belotserkovtseva Department of Obstetrics Gynecologyand PerinatologyMedical Institute of Surgut State UniversitySurgutRussian Federation Scientific and Educational Center Medical Institute of Surgut State UniversitySurgutRussian Federation Department of Pathophysiology and General Pathology Director of the Medical InstituteSurgut State UniversitySurgutRussian Federation Surgut Regional Clinical Center for Maternity and Childhood Protection SurgutRussian Federation

Successful reproduction in mammals requires gamete development,fertilization,and early embryonic *** in any of these processes can lead to infertility,recurrent miscarriages,and congenital *** clinical recognition of the genetic causes of female reproductive insufficiency using increasingly advanced genetic technologies poses a serious challenge for reproductive medicine in the 21st ***,the current literature on genetic factors involved in reproductive losses was summarized.A literature search was conducted using Web of Science,MEDLINE,and PubMed databases for articles written in English on the genetic causes of women’s reproductive health *** implementation of whole-exome and wholegenome sequencing is expected to identify numerous genetic factors responsible for oocyte *** will aid in increasing the likelihood of successful female reproductive function,improve the outcomes of assisted reproductive technologies,optimize treatment,and facilitate genetic diagnosis of patients.

关键词： Genetics Infertility Reproductive disorders Premature ovarian insufficiency

Belgica antarctica(Diptera: Chironomidae): A natural modelorganism for extreme environments

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Insect Science 2022年第1期29卷 2-20页

作者： Iryna Kozeretska Svitlana Serga Pavlo kovalenko Volodymyr Gorobchyshynand Peter Convey National Antarctic Scientific Center of Ukraine 01601Taras Shevchenko blv.16KyivUkraine Taras Shevchenko National Universityof Kyiv Department General and Medical Genetics01601Volodymyrska str.64/13KyivUkraine State Institution«Institute for Evolu-tionary Ecology of the National Academy of Sciences of Ukraine» Department of Population Dynamics03143Lebedeva str.37KyivUkraine and4British Antarctic SurveyNERCHigh CrossMadingley RoadCambridge CB30ETUnited Kingdom

Belgica antarctica(Diptera:Chironomidae),a brachypterous midge endemicto the maritime Antarctic,was first described in *** more than a century of study,a vast amount of information has been compiled on the species(3750000 Google searchresults as of January 10,2021),encompassing its ecology and biology,life cycle and re-production,polytene chromosomes,physiology,biochemistry and,increasingly,***2014,***’s genome was sequenced,further boosting *** develop-mental stages can be cultured successfully in the *** together,this wealthof information allows the species to be viewed as a natural model organism for studies ofadaptation and function in extreme environments.

关键词： Belgica antarctica Chironomidae stress adaptation Antarctica

Acetabular cup version modelling and its clinical applying on plain radiograms

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World Journal of Orthopedics 2017年第12期8卷 929-934页

作者： Anton Denisov Stanislav Bilyk Anton kovalenko Orthopedic Department Vreden Russian Research Institute of Traumatology and Orthopedics

AIM To measure the sensitivity and specificity of the cup version assessment by using only anteroposterior hip and pelvis views, evaluate the incidence of inadequate cup version in patients with repeated dislocations after total hip arthroplasty(THA). METHODS Radiographic retrospective analysis of 2 groups of patients, with follow up of 6-60 mo, after undergoing primary THA. First group of 32 patients(20 female, 12 male) with unilateral THA(32 hips) required early revision arthroplasty for reasons of dislocation. The mean age and mode were 59(from 38 to 83) and 66 ages respectively. The average body mass index(BMI) was 24.2(from 17.7 to 36.3), mode 23.9. Second group was consisted of 164 patients(101 female, 63 male) without dislocations during the follow-up period(170 hips). Among them 6 patients required bilateral THA. The mean age was 60(from 38 to 84) and mode 59. BMI was 24.8(17.2-36.8), mode 25.2. Clinical significance of the cup anteversion sign was estimated with cross tabulation 2 × 2. RESULTS The value of the χ~2 yates was 10.668(P < 0.01).Sensitivity of SAI(sign of anteversion insufficiency) was 29%(95%CI: 9%-46%), and specificity was 92%(95%CI: 88%-96%). Relative risk of dislocation in patients with SAI was 3.4(95%CI: 1.8-6.3). CONCLUSION This method provides the surgeons with the ability to perform a reliable and simple qualitative assessment of the acetabular component version. It can be useful during patient examination with early loosening of the implant, dislocations, and impingement. Additionally, it can provide necessary information during planning of revision surgery, especially when considering question about cup replacement, although final assessment of the cup position should be done with a computed tomography scan.

关键词： Hip arthroplasty Acetabular component Retroversion Dislocation

Ferrofluid nucleus phase transitions in an external uniform magnetic field

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Chinese Physics B 2015年第10期24卷 322-330页

作者： B.M.Tanygin S.I.Shulyma V.F.kovalenko M.V.Petrychuk Faculty of Radiophysics Taras Shevchenko National University of Kyiv

The phase transition between a massive dense phase and a diluted superparamagnetic phase has been studied by means of a direct molecular dynamics simulation. The equilibrium structures of the ferrofluid aggregate nucleus are obtained for different values of a temperature and an external magnetic field magnitude. An approximate match of experiment and simulation has been shown for the ferrofluid phase diagram coordinates ＂field-temperature＂. The provided phase coexistence curve has an opposite trend comparing to some of known theoretical results. This contradiction has been discussed. For given experimental parameters, it has been concluded that the present results describe more precisely the transition from linear chains to a dense globes phase. The theoretical concepts which provide the opposite binodal curve dependency trend match other experimental conditions： a diluted ferrofluid, a high particle coating rate, a high temperature,and/or a less particles coupling constant value.

关键词： ferrofluid aggregate phase diagram molecular dynamics

A Mechanism of Solar Variability Effect on Radiative Balance of the Earth Atmosphere

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空间科学学报 2005年第5期25卷 450-459页

作者： G.A.Zherebtsov V.A.kovalenko S.I.Molodykh Institute of Solar-Terrestrial Physics Siberian Branch Russian Academy of Sciences Irkutsk 664033 RussiaInstitute of Solar-Terrestrial Physics Siberian Branch Russian Academy of Sciences Irkutsk 664033 RussiaInstitute of Solar-Terrestrial Physics Siberian Branch Russian Academy of Sciences Irkutsk 664033 Russia

Possible mechanisms of solar-climatic connections, which may be of importance as over short and long time intervals, are discussed. The variations of energetic balance of Earth's climatic system for the last fifty years are estimated. It is ascertained that the disbalance between the flux of solar energy that comes to the Earth and radiates to space is of 0.1% for the last ten years. The suggested mechanism makes it possible to explain not only the observed variation of the enthalpy of the Earth's climatic system for the period 1910-1980, but also the climate anomalies during last thousand years: the climate optimum in 12 century, and"small glacial period" in 16-17 centuries.

关键词：太阳活动地球气候系统宇宙

Synthesis of RE-Ag,Al-RE-doped sol-gel glass and films for solar cells

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Journal of Rare Earths 2009年第4期27卷 671-674页

作者： A.V.Semchenko V.V.Sidsky V.Е.Gaishun D.L.kovalenko W.Strek Francisk Skorina Gomel State University 246019 Sovetskaya st.104 Gomel Belarus Institute of Low Temperature and Structures Research PAN Okolna st.2 Wroclaw Poland

The paper dealt with the study of fluorescence properties of sol-gel systems doped with rate-earth ions and co-doped with silver. The general problem for these types of inorganic phosphors was a very low absorbance in the visible range. Therefore, a sensitizer of luminescence of the rare-earth ions should be selected and used. The sensitizer should possess a good absorbance in the visible range and strong interaction with the rare-earth ions. In this study silver ions were selected as the sensitizer.

关键词： sol-gel method sol-gel glass and film luminescence and its amplification rare-earth ions silver ions energy transfer

Callus Cultures Of Beans Infected With Virus As A Model For Testing Antiviral Compaunds

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Journal of Botanical Research 2019年第2期1卷 19-24页

作者： kovalenko Oleksiy Kyrychenko Angelina kovalenko Olena Zobolotny Institute of Microbiology and Virology NAS of Ukraine Kyiv03143Ukraine

In the work,bean callus raised from a leaves of Bean common mosaic virus infected bean plant was obtained and adapted for the testing of antiviral activity of liposomal glycan-glycolipid *** adspersum glucans and Pseudomonas *** were constituents of liposomal *** has been shown that under the long-term cultivation(up to 3 months)in the presence of a liposomal preparation containing(10-100 mg/l),the virus is eliminated from the *** is evidenced by the absence of 391 bp sequence amplification product established by RT-PCR in the callus tissue,cultured on a medium containing the liposomal *** proposed model system is analogous to plant tumors and has obvious advantages over similar systems in vivo,since the callus growth is controlled and independent of environmental factors.

关键词： Bean common mosaic virus(BCMV) Bean yellow mosaic virus(BYMV) Reverse transcriptase polymerase chain reaction(RT-PCR) Plant tumors Glycans Glycolipids Therapy of virus diseases