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Wyszukujesz frazę "Lebedev, A." wg kryterium: Autor

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    Wyświetlanie 1-14 z 14
    Tytuł:
    Labyrinth screw pump theory
    Teorija labirintno-vintovykh nasosov
    Autorzy:
    Andrenko, P.
    Lebedev, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/76818.pdf
    Data publikacji:
    2014
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    screw pump
    working process
    flow characteristics
    design method
    physical model
    geometrical dimension
    Źródło:
    Motrol. Motoryzacja i Energetyka Rolnictwa; 2014, 16, 6
    1730-8658
    Pojawia się w:
    Motrol. Motoryzacja i Energetyka Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Matematicheskaja model stenda dlja ispytanijj nasosov
    Mathematical model of stand for tests of pumps
    Autorzy:
    Andrenko, P.
    Lebedev, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/76554.pdf
    Data publikacji:
    2011
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Źródło:
    Motrol. Motoryzacja i Energetyka Rolnictwa; 2011, 13 C
    1730-8658
    Pojawia się w:
    Motrol. Motoryzacja i Energetyka Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    K opredeleniju kinematicheskikh svjazejj, uglov i skorostejj koljos prostranstvennojj matematicheskojj modeli dvizhenija mnogoehlementnogo mashinno-traktornogo agregata
    To determine the kinematic links, angles and speed wheel spatial mathematical model of multielement tractor units
    Autorzy:
    Antoshhenkov, R.
    Lebedev, A.
    Tolstolutskijj, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/77496.pdf
    Data publikacji:
    2015
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    agricultural machine
    tractor unit
    seeder
    mobile machinery
    dynamic system
    mathematical model
    Źródło:
    Motrol. Motoryzacja i Energetyka Rolnictwa; 2015, 17, 7
    1730-8658
    Pojawia się w:
    Motrol. Motoryzacja i Energetyka Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Justification for the body construction selection of the unmanned uninhabited underwater apparatus
    Autorzy:
    Lebedeva, M. P.
    Lebedev, A. O.
    Butsanets, A. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/116035.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Autonomous Underwater Vessel (AUV)
    unmanned uninhabited underwater apparatus
    underwater object
    body construction
    Unmanned Underwater Vehicle (UUV)
    underwater apparatus
    hydrodynamics
    motion parameters
    Opis:
    The paper explores the possibility of creating an underwater apparatus in the form of a body of rotation. The form of the device will allow to effectively examine the found underwater objects, the bottom topography, measurement of other parameters of the underwater environment or objects. The devices of a different streamlined body form are considered. The apparatus in the form of a rotation body is proposed. The geometric shape of the proposed apparatus, the system of motion and control are investigated. Methods for calculating the motion parameters, methods for the vehicle positioning in the flow and the underwater vehicle movement in the vertical plane are proposed. The study confirms the ability of the underwater vehicle to move under water in a horizontal and vertical directions. The study confirms that the device possess stability at rectilinear motion, good turning ability and at the same time it is able to position itself during the flow.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 4; 693-697
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optically Pumped Low Threshold ZnSe Based Lasers with 2.8 ML CdSe Active Region
    Autorzy:
    Sorokin, S.
    Toropov, A.
    Shubina, T.
    Lebedev, A.
    Sedova, I.
    Ivanov, S.
    Waag, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1992195.pdf
    Data publikacji:
    1998-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.66.Hf
    78.45.+h
    Opis:
    Room-temperature optically pumped (Zn,Mg)(S,Se)/(Zn,Cd)Se laser structures have been grown by molecular beam epitaxy. Using of alternatively-strained short-period superlattice waveguide results in low threshold power density values over the whole blue-green (470-520 nm) wavelength range. Incorporation of CdSe fractional monolayer active region provides more than fourfold further decrease in threshold with respect to quantum well laser structure. Optical and structural properties of laser structure with 2.8 monolayer CdSe are discussed in detail.
    Źródło:
    Acta Physica Polonica A; 1998, 94, 3; 539-544
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    First beam from the DECRIS 14-2m ion source for Slovak Republic
    Autorzy:
    Loginov, V.
    Bekhterev, V.
    Bogomolov, S.
    Efremov, A.
    Lebedev, A.
    Leporis, M.
    Yazvitsky, N.
    Zelenak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/148668.pdf
    Data publikacji:
    2003
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    ECR ion source
    injector
    Opis:
    The ECR laboratory of the Cyclotron Centrum of Slovak Republic (CC SR) in Bratislava, Slovakia, consists of the DECRIS 14-2m ion source and two low energy channels. It is a complete injector, consisting of an ECR ion source, focusing and steering elements, an analyzing magnet, a vacuum system, and an ion beam diagnostic system. The DECRIS 14-2m ion source is a multiply charged heavy ion source based on the electron cyclotron resonance principle. The ECR ion source DECRIS 14-2m and other system have been designed and manufactured at the FLNR JINR. The preliminary testing (magnetic field measurements, vacuum testing and testing of ECR ion source) has been performed at FLNR JINR. The final assembly of the DECRIS 14-2m will be done at the CC SR in Bratislava.
    Źródło:
    Nukleonika; 2003, 48,suppl.2; 85-88
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chondrichthyan spines from the Famennian (Upper Devonian) of Russia
    Autorzy:
    Lebedev, Oleg A.
    Ivanov, Alexander O.
    Linkevich, Valeriy V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1835588.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    chondrichthyes
    Ctenacanthiformes
    Euselachii
    Fin spines
    Famennian
    Devonian
    Russia
    ryby chrzęstnoszkieletowe
    famen
    dewon
    Rosja
    Opis:
    Very rare chondrichthyan spines from the Famennian (Upper Devonian) of European Russia are referred here to ctenacanthiforms, euselachians and a chondrichthyan group of uncertain systematic position. Ctenacanthus Agassiz, 1837 is recorded from the lower and middle Famennian of the central and north-western parts of the area. Sculptospina makhlaevi Lebedev gen. et sp. nov. originates from the lower Famennian of the Lipetsk Region. The holotype of ‘Ctenacanthus’ jaekeli Gross, 1933 and a new specimen from the upper Famennian of the South Urals are shown to belong to the same taxon, which is transferred to Acondylacanthus St. John and Worthen, 1875. New specimens of Tuberospina nataliae Lebedev, 1995 from the upper Famennian of Central Russia are described in detail. The newly presented material increases our knowledge of the composition of Famennian marine assemblages from the East European Platform. It is suggested that these assemblages may be classified as chondrichthyan-dominated and dipnoan-dominated. Hypothetically, after the end- Devonian Hangenberg extinction event, which affected numerous secondary consumers in vertebrate communities, some chondrichthyan groups could have encroached to take advantage of previously occupied ecological niches. Ctenacanthus, as well as Acondylacanthus and Amelacanthus survived the end-Devonian mass extinction to continue into the Carboniferous.
    Źródło:
    Acta Geologica Polonica; 2020, 70, 3; 339-362
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chondrichthyan spines from the Famennian (Upper Devonian) of Russia
    Autorzy:
    Lebedev, Oleg A.
    Ivanov, Alexander O.
    Linkevich, Valeriy V.
    Powiązania:
    https://bibliotekanauki.pl/articles/139186.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    chondrichthyes
    Ctenacanthiformes
    Euselachii
    Fin spines
    Famennian
    Devonian
    Russia
    ryby chrzęstnoszkieletowe
    famen
    dewon
    Rosja
    Opis:
    Very rare chondrichthyan spines from the Famennian (Upper Devonian) of European Russia are referred here to ctenacanthiforms, euselachians and a chondrichthyan group of uncertain systematic position. Ctenacanthus Agassiz, 1837 is recorded from the lower and middle Famennian of the central and north-western parts of the area. Sculptospina makhlaevi Lebedev gen. et sp. nov. originates from the lower Famennian of the Lipetsk Region. The holotype of ‘Ctenacanthus’ jaekeli Gross, 1933 and a new specimen from the upper Famennian of the South Urals are shown to belong to the same taxon, which is transferred to Acondylacanthus St. John and Worthen, 1875. New specimens of Tuberospina nataliae Lebedev, 1995 from the upper Famennian of Central Russia are described in detail. The newly presented material increases our knowledge of the composition of Famennian marine assemblages from the East European Platform. It is suggested that these assemblages may be classified as chondrichthyan-dominated and dipnoan-dominated. Hypothetically, after the end- Devonian Hangenberg extinction event, which affected numerous secondary consumers in vertebrate communities, some chondrichthyan groups could have encroached to take advantage of previously occupied ecological niches. Ctenacanthus, as well as Acondylacanthus and Amelacanthus survived the end-Devonian mass extinction to continue into the Carboniferous.
    Źródło:
    Acta Geologica Polonica; 2020, 70, 3; 339-362
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Studies of Thermally Activated Vertical Hole Transport in ZnCdSe/ZnSSe Superlattice
    Autorzy:
    Lebedev, A.
    Sorokin, S.
    Toropov, A.
    Shubina, T.
    Il'inskaya, N.
    Nekrutkina, O.
    Ivanov, S.
    Pozina, G.
    Bergman, P.
    Monemar, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1991641.pdf
    Data publikacji:
    1998-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.66.Hf
    78.45.+h
    71.35.-y
    78.47.+p
    72.80.Ey
    Opis:
    Miniband transport in alternatively-strained ZnCdSe/ZnSSe short period superlattices is investigated using a structure with an enlarged quantum well. Temperature dependences of time-resolved and continuous wave photoluminescence have been measured, demonstrating an efficient temperature-induced vertical hole transport. A quantitative description is given for the carrier kinetics in these structures.
    Źródło:
    Acta Physica Polonica A; 1998, 94, 3; 421-426
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    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:
    Biorational control of arthropod pests with emphasis on the use of the chitin synthesis inhibitor novaluron
    Autorzy:
    Ishaaya, I.
    Lebedev, G.
    Ghanim, M.
    Horowitz, A.R.
    Powiązania:
    https://bibliotekanauki.pl/articles/55215.pdf
    Data publikacji:
    2011
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    biorational control
    arthropod
    pest
    chitin synthesis
    novaluron
    insecticide
    insect
    growth regulator
    buprofezin
    diflubenzuron
    chlorfluazuron
    pyriproxyfen
    tebufenozide
    methoxyphenozide
    neonicotinoid
    imidacloprid
    acetamiprid
    thiamethoxam
    glutamate receptor
    gamma-aminobutyric acid
    abamectin
    Spinosad preparation
    novel insecticide
    Opis:
    Efforts have been made during the past three decades to develop insecticides with selective properties that act specifically on biochemical sites present in a particular insect group, but whose properties differ from those present in mammals. This approach has led to the discovery of compounds that affect the hormonal regulation of molting and developmental processes in insects such as ecdysone agonists, juvenile hormone (JH) mimics and chitin synthesis inhibitors. The search for potent acylureas has led to the development of novaluron (Rimon) developed by Makhteshim Chemical Works. The LC-50 value of novaluron on 3rd-instar Spodoptera littoralis fed on treated leaves is approximately 0.1 mg a.i./liter. This value resembles that of chlorfluazuron and is tenfold lower than that of teflubenzuron. Novaluron affects nymphs of Bemisia tabaci more than chlorfluazuron and teflubenzuron. Artificial rain, at a rate of 40 mm/h applied 5 and 24 h after treatment in a cotton field had no appreciable effect on the potency of novaluron on both S. littoralis larvae and B. tabaci nymphs. Hence, novaluron can be used in tropical areas and during rainy seasons. In general, benzoylphenyl ureas had no direct effect on parasitoids and phytoseiids and are considered mildly affect other natural enemies. Novaluron has no cross-resistance with conventional insecticides, the JH mimics pyriproxyfen and neonicotinoids. As such, it is considered an important compound in pest management programs.
    Źródło:
    Pestycydy; 2011, 1-4
    0208-8703
    Pojawia się w:
    Pestycydy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal Penetration of Gold Nanoparticles into Silicon Dioxide
    Autorzy:
    Ilkiv, I.
    Kotlyar, K.
    Amel'chuk, D.
    Lebedev, S.
    Cirlin, G.
    Bouravleuv, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1033145.pdf
    Data publikacji:
    2017-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    62.23.Pq
    61.46.Df
    68.08.Bc
    Opis:
    We report on an experimental study of the thermal annealing processes under air and nitrogen atmospheres of colloidal Au nanoparticles deposited onto SiO₂/Si(100) samples. It was shown that Au nanoparticles during annealing under ambient conditions could penetrate inside silicon dioxide layers forming pores at that their lengths were found to be dependent on the annealing time. The influence of oxygen on the penetration process is discussed. At the same time, the annealing of Au nanoparticles under nitrogen conditions did not result in the formation of pores.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 2; 366-369
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electron Microscopy and X-ray Structural Investigations of Incommensurate Spin-Ladder Sr$\text{}_{4.1}$Ca$\text{}_{4.7}$Bi$\text{}_{0.3}$Cu$\text{}_{17}$O$\text{}_{29}$ Single Crystals
    Autorzy:
    Dłużewski, P.
    Pietraszko, A.
    Kozłowski, M.
    Szczepańska, A.
    Górecka, J.
    Baran, M.
    Leonyuk, L.
    Babonas, G.-J.
    Lebedev, O.
    Szymczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2014560.pdf
    Data publikacji:
    2000-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.72.Nn
    61.72.Mm
    74.72.-h
    61.16.Bg
    61.10.-i
    Opis:
    Transmission electron microscopy and X-ray diffraction proved chain ladder incommensurate single crystal structure of investigated samples. The incommensurate ratio was determined from the X-ray and electron diffraction being equal to 0.704. Diffuse scattering intensities localised on the planes perpendicular to the c*-axis and passing through the spots originating from the periodicity of chain sublattice were detected. High-angle grain boundary or twinning formed by rotation of 33.3° around [100] direction was observed. High-resolution electron microscopy images revealed the stacking faults in ac planes.
    Źródło:
    Acta Physica Polonica A; 2000, 98, 6; 729-737
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

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