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Wyświetlanie 1-15 z 110
Tytuł:
Протестные настроения в России на фоне Европейских государств: анализ кейсов 2017-2019 годов
Autorzy:
R, Ignatovskiy, Yaroslav
G, Mikhailichenko, Dmitriy
G, Ivanov, Vladimir
A, Evdokimov, Nikolai
A, Pushkina,, Maria
Powiązania:
https://bibliotekanauki.pl/articles/894767.pdf
Data publikacji:
2020-03-31
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
political process in Russia
Europe
elections
protests
protest mood
political stability
civil society
Opis:
The last two years of development of the Russian political system were characterised by the protest mood increasing. Social discontent and various forms of political protest have become a noticeable element of social and political life. It is symptomatic that the protest mood develops during electoral campaigns (that predetermined the victory of the opposition in the elections in a number of regions), and also as a result of development and implementation of the current governmental processes. Considering that elections have been held in the majority of Russian regions during 2017-2019, the attention to the protest movement from various political actors will increase. The authors analyze the forms, main actors and technologies of protests, worked out their typology based on case studies. The current protest mood in Russia is compared with the situation in several EU countries (primarily in France, as well as in Portugal, Poland, Serbia and Greece). In conclusion of the article will be presented the forecasts of the socio-political situation development in the Russian Federation.
Źródło:
Przegląd Europejski; 2020, 1; 199-217
1641-2478
Pojawia się w:
Przegląd Europejski
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wielkie pozary w lasach wschodniej Syberii i ich wplyw na proces tworzenia sie lokalnych chmur burzowych
Autorzy:
Ponomarev, E.
Ivanov, V.A.
Byckov, V.A.
Powiązania:
https://bibliotekanauki.pl/articles/45655.pdf
Data publikacji:
2005
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
chmury burzowe
oddzialywanie na srodowisko
lasy
Syberia
monitoring
pozary wielkoobszarowe
pozary lasow
lesnictwo
wyladowania atmosferyczne
Źródło:
Leśne Prace Badawcze; 2005, 4; 19-28
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vaterite CaCO3-coated polymeric fibrous scaffolds for biomedical applications
Autorzy:
Saveleva, M.
Ivanov, A.
Douglas, T. E. L.
Goring, D.
Skirtach, A.
Parakhonskiy, B.
Powiązania:
https://bibliotekanauki.pl/articles/285236.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
scaffolds
polymers
biomedical applications
Źródło:
Engineering of Biomaterials; 2017, 20, no. 143 spec. iss.; 76
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Usovershenstvovanie konstrukcii nacoca-dozatora sistemy gidroobemnogo rulevogo upravlenija samokhodnykh mashin
Improvement construction of metering pump-device system of hydrovolumetric steering management in self-propelled machines
Autorzy:
Ivanov, N.
Sereda, L.
Motornaja, O.
Perejaslavskijj, A.
Powiązania:
https://bibliotekanauki.pl/articles/76325.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
steering system
metering device
mathematical model
improved line
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2014, 16, 5
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Upwelling dynamics in the Baltic Sea studied by a combined SAR-infrared satellite data and circulation model analysis
Autorzy:
Gurova, E.
Lehmann, A.
Ivanov, A.
Powiązania:
https://bibliotekanauki.pl/articles/48338.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic Sea
coastal upwelling
MODIS satellite image
circulation model
synthetic aperture radar
sea surface temperature
wind stress
Źródło:
Oceanologia; 2013, 55, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two bone fragments of ornithocheiroid pterosaurs from the Cenomanian of Volgograd region, Southern Russia
Autorzy:
Averianov, A O
Kurochkin, E.N.
Pervushov, E.M.
Ivanov, A.V.
Powiązania:
https://bibliotekanauki.pl/articles/21981.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Volgograd Region
Cenomanian
Cretaceous
Pterosauria
Russia
Ornithocheiroidea
bone fragment
ornithocheiroid pterosaur
pterosaur
paleontology
Opis:
Two pterosaur bone fragments, a distal humerus and a distal femur, from the upper Cenomanian of the Volgograd Region in the Don River basin of southern Russia are reported. Although fragmentary, these bones come from mature individuals and are exceptionally well and three−dimensionally preserved, allowing a detailed description of their anatomy. Both specimens can be referred to a middle−sized ornithocheiroid pterosaur with a reconstructed wingspan of about 4 m. The humerus shows affinities with Istiodactylus from the Barremian of England, whereas the femur fragment is not identifiable beyond Ornithocheiroidea indet.
Źródło:
Acta Palaeontologica Polonica; 2005, 50, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Time-Resolved Microwave Spectroscopy of High Electron Mobility GaAs/AlGaAs Structures
Autorzy:
Khachepuridze, A.
Ivanov, V. Yu.
Godlewski, M.
Regiński, K.
Bugajski, M.
Powiązania:
https://bibliotekanauki.pl/articles/1991552.pdf
Data publikacji:
1998-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.20.Dx
76.40.+b
76.70.Hb
Opis:
Mechanism of the optical detection of cyclotron resonance via emission from 2D electron gas in modulation doped quantum wells and in high electron mobility structures of GaAs/AlGaAs is discussed based on the results of time-resolved optical detection of cyclotron resonance. An important role of impact ionization processes is demonstrated. We also show that microwave radiation destroys emission enhancement at the Fermi level and the relevant mechanism is proposed.
Źródło:
Acta Physica Polonica A; 1998, 94, 3; 387-391
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal effects of laser irradiation on maize seeds
Autorzy:
Hernandez Aguilar, C.
Dominguez Pacheco, F.A.
Cruz Orea, A.
Ivanov Tsonchev, R.
Powiązania:
https://bibliotekanauki.pl/articles/26520.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:
It is important to know the temperature changes in seeds that have been irradiated with laser light because this could have substantial practical and theoretical importance. Thus, the thermal effects of low intensity laser irradiation on seeds was studied, showing variation of temperature produced by laser light applied during 60 s on two maize seed genotypes, ‘Toluqueño’ and ‘Cacahuazintle’: crystalline and floury, respectively, under two different conditions: natural colour and dyed black, evaluating the temperature changes by a thermal camera. The optical absorption spectra and the non-radiative relaxation time of the seeds were obtained using photoacoustic spectroscopy. The results indicate that it is possible to produce temperature changes, detected by an infrared camera, in crystalline and floury seeds when theyare irradiated with a laser beam at a 650 nm wavelength and27.4 mW power. The highest variation of temperature in the seeds was obtained for the black-dyed condition, these variations being 5.56 and 9.28°C for crystalline and floury seeds, respectively. Among the seeds, in the dyed condition, the floury seed had the lower non-radiative relaxation time, the higher optical absorption coefficient and a lower optical penetration length at the laser wavelength (650 nm).
Źródło:
International Agrophysics; 2015, 29, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structure of superilat graphs
Autorzy:
Ivanov, A.
Powiązania:
https://bibliotekanauki.pl/articles/1208583.pdf
Data publikacji:
1993
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
We prove a structure theorem asserting that each superflat graph is tree-decomposable in a very nice way. As a consequence we fully determine the spectrum functions of theories of superflat graphs.
Źródło:
Fundamenta Mathematicae; 1993, 143, 2; 107-117
0016-2736
Pojawia się w:
Fundamenta Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The revision of 'Cladodus' occidentalis, a Late Paleozoic ctenacanthiform shark
Autorzy:
Ginter, M
Ivanov, A.
Lebedev, O.
Powiązania:
https://bibliotekanauki.pl/articles/20599.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Carboniferous
Cladodus mirabilis
Paleozoic
Late Paleozoic
Permian
tooth
Ctenacanthiformes
Glikmanius occidentalis
paleontology
Chondrichthyes
Opis:
The teeth of a well known late Palaeozoic cladodont chondrichthyan, “Cladodus” occidentalis from Russia, USA, and England are restudied and a new generic name, Glikmanius gen. nov., is proposed for this species. Yet another tooth−based species, formerly described as ?Symmorium myachkovensis, occurring on the Russian Platform and in Nebraska, is considered to belong to the newly erected genus. Although there is no direct evidence that Glikmanius possessed fin spines, the broad similarity between its teeth and those of Ctenacanthus compressus suggests it had a ctenacanthiform affinity. The possible relationships between Glikmanius, Cladodus sensu stricto, “Ctenacanthus” costellatus, and Heslerodus, are suggested. However, the proposition put forward by an earlier author that the teeth of Heslerodus might represent the lower jaw dentition of G. myachkovensis, is rejected. The overall resemblance of Glikmanius teeth and those of Cladoselache and Squatinactis is recognised as convergent.
Źródło:
Acta Palaeontologica Polonica; 2005, 50, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The possibilities of improving the operational characteristics of vehicle gear by the use of cylindrical arched tooth gear drive
Возможности повышения эксплуатационных характеристик приводов транспортных средств за счет применения арочных цилиндрических зубчатых передач
Autorzy:
Ivanov, I.
Rubin, P.
Tarapanov, A.
Kanatnikov, N.
Powiązania:
https://bibliotekanauki.pl/articles/375448.pdf
Data publikacji:
2016
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
driving gear
reliability
tooth gearing durability
cutting process
arched tooth
układ napędowy
niezawodność
trwałość zęba przekładni zębatej
proces cięcia
Opis:
In this article, one of the most promising methods of increasing the operational characteristics of a vehicle gear by the use of cylindrical gear drives with arched teeth is presented. Despite a number of advantages, these gearings are not widely used due to design and manufacture complexity. Possible options of edge cutting machining of cylindrical gearwheel arched teeth are considered. The progressive process technology proposed by the authors combines the roughing by multi-purpose cutter head for bevel gear with circular tooth and finishing by cutter head with zero angle of cutting edge.
В статье представлен один из перспективных способов повышения эксплуатационных характеристик приводов транспортных средств за счет применения цилиндрических передач с арочными зубьями. Несмотря на целый ряд преимуществ, такие передачи не имеют широкого распространения это связано сосложностью их проектирования и изготовления. Рассмотрены возможные варианты лезвийной обработки арочных зубьев цилиндрических колес. Авторами предложен прогрессивный технологический процесс. Сочетающий черновую обработку универсальными резцовыми головками для обработки конических колес скруговым зубом и чистовую - резцовыми головками с нулевым углом профиля.
Źródło:
Transport Problems; 2016, 11, 2; 61-66
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The improvement of the rheological model for controlling the stress-strain state and humidity in the materials of museum pieces: zener thermodiffusion model for capillary-porous bodies
Autorzy:
Dovhaliuk, V. B.
Chovnyuk, Y. V.
Ivanov, E. A.
Shyshyna, M. O.
Powiązania:
https://bibliotekanauki.pl/articles/114762.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
aftereffect
colloid capillary-porous bodies
deformations
heat and mass transfer
Ishlinskiy - Rzhanitsin generalized rheological model of the elastic-viscous body
Zener thermodiffusion rheological model
model reologiczny
model termodyfuzji Zenera
ciało kapilarno-porowate
transfer ciepła
transfer masy
Opis:
The drying and humidifying processes of capillary-porous (colloid) bodies occur during the production of various materials for the consumer goods industry, building materials, storage of museum pieces, etc. It is known that the main linkage forms of the moisture and colloid capillary-porous bodies (CCPBs), namely adsorption, capillary condensation and capillary linkage of the free moisture in the cavities of the above bodies, depend on the temperature and relative humidity of drying/humidifying agent. It means that the CCPBs behave in a peculiar way depending on the temperature and humidity fields. The problems of CCPBs drying (or humidifying) process include the issue of the heat and humidity transfer both in the middle of the body and in the boundary layer on the interface of phases “body (object of drying/humidifying process) – environment”. The drying/humidifying intensity is at its maximum when the possibilities of the heat and mass transfer in the boundary layer correspond to the possibilities of moisture and heat moving inside the object of drying/humidifying process. The properties of the CCPB as material possessing specific elastic-viscous properties are described within the framework of O.Y. Ishlinskiy - O.R. Rzhanitsin generalized elastic-viscous body theory. A comparative analysis of the above mentioned CCPB’s properties from the point of view of Zener thermodiffusion theory is conducted. The mechanism of moisture transferring from the CCPBs’ central layers (as object of drying/humidifying process) up to their surfaces is developed. The theoretical researches examined the drying/humidifying phenomena for both the entire volume of the CCPB and three structural directions. It is noted that drying/humidifying of CCPBs is a complicated heat and mass transfer process accompanied by mechanisms of molecular nature determining the kinetics of their running. It is shown that the appropriate equations’ solution of molecular-molar heat and moisture transfer under the appropriate boundary (limit) conditions allows to describe the fields, i.e. the distribution of transfer potentials (the temperature and moisture content in the CCPB as object of drying/humidifying) at any time of the appropriate process. The drying/humidifying curves (“drying/humidifying rate versus CCPB humidity”) and the temperature curves (“CCPB temperatures versus CCPB humidity”) reflect the nature of the drying/humidifying processes. In the framework of the proposed generalized rheological model of CCPB, the residual deformations of bodies for various load types (the time-varying stress applied to the CCPB) is estimated.
Źródło:
Zeszyty Naukowe. Quality. Production. Improvement; 2019, 2 (11); 51-71
2544-2813
Pojawia się w:
Zeszyty Naukowe. Quality. Production. Improvement
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The evaluation of the current state of EHF-sensors quality in the technical systems and its improvement
Autorzy:
Chovnyuk, Y. V.
Ivanov, E. A.
Dovhaljuk, V. B.
Shyshyna, M. A.
Gumenjuk, Y. O.
Sivak, I. N.
Powiązania:
https://bibliotekanauki.pl/articles/114875.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
aperture
coaxial line
dynamic range of the evaluation
extremely high frequency sensors
function of the entropy evaluation
scale of the entropy evaluation
oceny entropii
czujnik
funkcja oceny entropii
Opis:
In the article the function and the scale for the entropy evaluation of the current state of extremely high frequency (EHF-) sensors quality in the various technical systems which fits the requirements of universality and maximal independency from the human factor are offered. One may see such EHF-sensors for the analysis of the quick transformations of the biological liquids properties. It’s high lighted that the available methods of the determination of technical systems’ quality have essential flaws which consist in both subjectivism because the dominant role in the evaluation belongs to experts and legitimacy of providing them properties of universality which was proved by nobody. The scheme of EHF-sensor is analyzed for which one may create an analytical model. The problem of the fields’ determination at the working region of such sensor is discussed. The presented scheme is possible to use for the mathematical model and just for that part of the problem which is devoted to the transformation of the properties of the object. The results of calculation of components of electromagnetic field at the working space of EHF-sensor are discussed. One may estimate the sizes of this space. The offered function of the quality evaluation, the parameter of which is the quantity of own information of the explored sensor, provides the declared universality approach according to the principles of the information theory. The conformity to all requirements for the functions of the evaluation of the quality: continuity, monotonic and smoothness over the whole range of definition regardless of the probability distribution function, which is measured by the random value EHF-sensor was proved. The proposed scale of the entropy evaluation of the quality fits to standard settings of the diagnostic of the technical systems and has three sub ranges which determine the state of the EHF-sensors: good state, up state, and down state. Unlike the existing psychophysical scales the offered scale has dynamic range of the evaluation so the limits of the sub ranges will automatically change depending on the regulatory and technical requirements for the state of the explored EHF-sensor. Such approach provides adaptation of the scale to specific requirements which gives a chance to evaluate the qualitative state of the object more reliably. The results of modeling of the qualitative state of the sensor are given. The possible practical application of the offered function and scale is usage in the systems of monitoring and diagnostic for determination of the current qualitative state of the explored technical system, as well.
Źródło:
Zeszyty Naukowe. Quality. Production. Improvement; 2019, 2 (11); 26-40
2544-2813
Pojawia się w:
Zeszyty Naukowe. Quality. Production. Improvement
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tamponaznye materialy i tehnologiceskie priemy provedenia izolacionnyh rabot pri burenii skvazin na neft i gaz
Plugging-back technology of lost drilling flush fluid in circulation zone in the course of drilling for oil and gas
Autorzy:
Ivanov, A. I.
Powiązania:
https://bibliotekanauki.pl/articles/300235.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
uszczelnianie
technologia
wiercenie
ropa naftowa
gaz
plugging-back
technology
drilling
oil
gas
Opis:
W trakcie prowadzenia wierceń poszukiwawczych w górotworze o skomplikowanych warunkach geologicznych może dochodzić do katastrofalnych ucieczek płynów i konieczne staje się podjęcie środków zmierzających do ich likwidacji. W tej sytuacji palącym problemem jest opracowanie nowych technologii uszczelniania i receptur zaczynów. Do wykonywania prac uszczelniających mających na celu wyizolowanie stref zaproponowano nowy rosyjski polimer spęczający "Petrosorb". "Petrosorb" tworzy w szczelinach i pęknięciach skał związki chemiczne o określonych właściwościach izolujących, zależnych od ich zdolności do pozostania w pęknięciach. Do najważniejszych parametrów należą: -- wysoka zdolność obsorpcyjna polimerów; - duża zdolność cząstek początkowych do ekspansji w połączeniu z wodą lub wodną emulsją (pęczenie); - właściwości lepko-plastyczne układu uszczelniającego; -- tworzenie się związków chemicznych między grupami funkcjonalnymi polimerów i skały, umożliwiające wytworzenie przez żel oporu hydraulicznego dla przepływających płynów.
There are catastrophic absorption flushing-out liquids while drilling oil and gas prospecting wells in complex geological conditions. It is necessary to make operative decisions on their liquidation. In this connection the development of new plugging structures and technological receptions for carrying out isolating works is an actual problem. It is offered to use new Russian swelling polymer "Petrosorb" for isolation works carrying out. "Petrosorb" creates compositions in rocks cracks. These compositions have their isolating properties which depend on their ability to stay in cracks and interstices at the expense of: - high polymer absorbing ability; - the great volumetric expansion initial particles at the connection with water or water containing emulsion (swelling); - viscoelastic properties of plugging-back system; - chemical connections formations between functional groups of polymer and rock, so significant hydraulic resistance to current of a liquid through volume of the formed gel is created.
Źródło:
Wiertnictwo, Nafta, Gaz; 2008, 25, 2; 311-316
1507-0042
Pojawia się w:
Wiertnictwo, Nafta, Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 110

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