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  1. Article: Assessing and Forecasting Fatigue Strength of Metals and Alloys under Cyclic Loads.

    Kurkin, Andrey / Khrobostov, Alexander / Andreev, Vyacheslav / Andreeva, Olga

    Materials (Basel, Switzerland)

    2024  Volume 17, Issue 7

    Abstract: Within the scope of this research, patterns of changes in the fatigue life and limit of metals under cyclic stress were identified and the most informative parameters were determined as the basis for developing a method for the universal transformation ... ...

    Abstract Within the scope of this research, patterns of changes in the fatigue life and limit of metals under cyclic stress were identified and the most informative parameters were determined as the basis for developing a method for the universal transformation of experimental data on the fatigue of metals and alloys for their subsequent generalization. Experimental data on metal fatigue, obtained by a large number of authors for a wide range of grades of steels and alloys, under the influence of various combinations of factors, were systematized. A generalized dependence of the recalculated parameters of fatigue life and limit was obtained, its characteristics were assessed, and a sensitivity analysis was performed, confirming the universal nature of the obtained dependence. A system of parameters has been proposed making it possible to consider and forecast high-cycle fatigue processes for a wide range of metals and alloys, under the conditions of various combinations of operating factors, from unified positions and a more general point of view.
    Language English
    Publishing date 2024-03-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma17071489
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Production, Mechanical and Functional Properties of Long-Length TiNiHf Rods with High-Temperature Shape Memory Effect.

    Karelin, Roman / Komarov, Victor / Cherkasov, Vladimir / Yusupov, Vladimir / Prokoshkin, Sergey / Andreev, Vladimir

    Materials (Basel, Switzerland)

    2023  Volume 16, Issue 2

    Abstract: In the present work, the possibility of manufacturing long-length TiNiHf rods with a lowered Hf content and a high-temperature shape memory effect in the range of 120-160 °C was studied. Initial ingots with 1.5, 3.0 and 5.0 at.% Hf were obtained by ... ...

    Abstract In the present work, the possibility of manufacturing long-length TiNiHf rods with a lowered Hf content and a high-temperature shape memory effect in the range of 120-160 °C was studied. Initial ingots with 1.5, 3.0 and 5.0 at.% Hf were obtained by electron beam melting in a copper water-cooled stream-type mold. The obtained ingots were rotary forged at the temperature of 950 °C, with the relative strain from 5 to 10% per one pass. The obtained results revealed that the ingots with 3.0 and 5.0 at.% Hf demonstrated insufficient technological plasticity, presumably because of the excess precipitation of (Ti,Hf)
    Language English
    Publishing date 2023-01-09
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma16020615
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Профессор Н.Г. Жучков и его ученик Валентин Будаговский: из научной хроники 1930-х годов

    Andreev, V. , . editor@nppir.ru

    Russian Journal of Horticulture

    2015. 06. 30  , Issue (2)

    Abstract: Abstract. ...

    Abstract Abstract.
    Document type Article
    ISSN 2410-2652
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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  4. Article: Ključevye faktory uspešnosti rossijskich innovacionnych proektov v realʹnom sektore ėkonomiki

    Andreev, V

    Voprosy ėkonomiki : ežemesjačnyj žurnal , No. 11 , p. 41-61

    2010  , Issue 11, Page(s) 41–61

    Author's details V. Andreev
    Keywords Innovation ; Innovationsmanagement ; Russland
    Language Russian
    Size graph. Darst.
    Publisher Izd. Pravda
    Publishing place Moskva
    Document type Article
    Note In kyrill. Schr., russ. ; Zsfassung in engl. Sprache
    ZDB-ID 209089-2
    ISSN 0042-8736
    ISSN 0042-8736
    Database ECONomics Information System

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    In stock of ZB MED Bonn / Germany

    Z 1565: Show issues

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  5. Article: [On the problem of so-called "cryptogenic forms" of cancer].

    ANDREEV, V

    Suvremenna meditsina

    2003  Volume 119, Page(s) 41–48

    MeSH term(s) Humans ; Neoplasms/pathology
    Language Bulgarian
    Publishing date 2003-09-12
    Publishing country Bulgaria
    Document type Journal Article
    ZDB-ID 603373-8
    ISSN 0562-7192
    ISSN 0562-7192
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.B 985: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  6. Article: Pigmentni tumori na ustnata ligavitsa s pisanie na edin sluchai.

    ANDREEV, V

    Suvremenna meditsina

    2003  Volume 4, Issue 9, Page(s) 116–122

    Title translation Pigmented tumor of the oral mucosa with report of a case.
    MeSH term(s) Humans ; Melanoma ; Mouth Mucosa ; Mouth Neoplasms ; Mucous Membrane ; Neoplasms
    Language Undetermined
    Publishing date 2003-09-12
    Publishing country Bulgaria
    Document type Journal Article
    ZDB-ID 603373-8
    ISSN 0562-7192
    ISSN 0562-7192
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.B 985: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  7. Article ; Online: Improvement of the Technique for Predicting the Temperature Modes of Low-Potential Geothermal Wells

    Iakovlev P.V. / Churkin I.S. / Andreev V.V.

    E3S Web of Conferences, Vol 220, p

    2020  Volume 01058

    Abstract: The experience of operating geothermal thermal power plants shows that during the first 5 years, their economic performance deteriorates, because there is a change in the temperature field of the soil. It is also important to consider: seasonal cyclical ... ...

    Abstract The experience of operating geothermal thermal power plants shows that during the first 5 years, their economic performance deteriorates, because there is a change in the temperature field of the soil. It is also important to consider: seasonal cyclical changes in the heat load and possible reversal of the heat flow when switching from heating to air conditioning and vice versa. An option is considered, which, when the coolant fills the well, directly contacting the surface of the casing. During well operation, seasonal or technological changes in well load are taken into account. The well is operating in reverse mode. The conditions for calculation are determined by the alternation of the periods of turning on the heat pump with the cyclical periods of stopping, determined by the season. Research have shown that as a result of longterm operation of a geothermal well in a cyclic mode of thermal loading, there are changes of a temperature field of the rock surrounding a well, with effect of interference of thermal waves, leading to accumulation of heat. Based on the processing of the results obtained criterion equations for calculating the dimensionless temperature of the well at the time of completion of the cycle of heat supply or removal, as the corresponding largest temperature difference heat pump. The received equations allow to specify calculation of technical and economic indicators taking into account duration of geothermal well operation and its mode.
    Keywords Environmental sciences ; GE1-350
    Subject code 620
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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  8. Article: Effect of Cooling and Annealing Conditions on the Microstructure, Mechanical and Superelastic Behavior of a Rotary Forged Ti-18Zr-15Nb (at. %) Bar Stock for Spinal Implants.

    Lukashevich, Konstantin / Sheremetyev, Vadim / Komissarov, Alexander / Cheverikin, Vladimir / Andreev, Vladimir / Prokoshkin, Sergey / Brailovski, Vladimir

    Journal of functional biomaterials

    2022  Volume 13, Issue 4

    Abstract: In this work, the microstructure, phase state, texture, superelastic and mechanical properties of a Ti-18Zr-15Nb (at. %) shape memory alloy subjected to a combined thermomechanical treatment, including hot rotary forging with either air cooling or water ... ...

    Abstract In this work, the microstructure, phase state, texture, superelastic and mechanical properties of a Ti-18Zr-15Nb (at. %) shape memory alloy subjected to a combined thermomechanical treatment, including hot rotary forging with either air cooling or water quenching and post-deformation annealing are studied. It was revealed that the main structural component of the deformed and annealed alloy is BCC
    Language English
    Publishing date 2022-11-21
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2648525-4
    ISSN 2079-4983
    ISSN 2079-4983
    DOI 10.3390/jfb13040259
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Effect of Cold Drawing and Annealing in Thermomechanical Treatment Route on the Microstructure and Functional Properties of Superelastic Ti-Zr-Nb Alloy.

    Kudryashova, Anastasia / Lukashevich, Konstantin / Derkach, Mikhail / Strakhov, Oleg / Dubinskiy, Sergey / Andreev, Vladimir / Prokoshkin, Sergey / Sheremetyev, Vadim

    Materials (Basel, Switzerland)

    2023  Volume 16, Issue 14

    Abstract: In this study, a superelastic Ti-18Zr-15Nb (at. %) alloy was subjected to thermomechanical treatment, including cold rotary forging, intermediate annealing, cold drawing, post-deformation annealing, and additional low-temperature aging. As a result of ... ...

    Abstract In this study, a superelastic Ti-18Zr-15Nb (at. %) alloy was subjected to thermomechanical treatment, including cold rotary forging, intermediate annealing, cold drawing, post-deformation annealing, and additional low-temperature aging. As a result of intermediate annealing, two structures of
    Language English
    Publishing date 2023-07-15
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma16145017
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Comparative Assessment of Various Methods for Predicting Protein Content in Wheat Grain

    Pasynkov, A. V. / Zavalin, A. A. / Pasynkova, E. N. / Andreev, V. L.

    Russian agricultural sciences. 2021 July, v. 47, no. 4

    2021  

    Abstract: Using multiple regression analysis, a second-order equation reflecting the dependence of protein content (Y = Nₜₒₜ × 5.7%) in wheat grain on wet gluten content (X₁, %) and thousand kernel weight (TKW) (X₂, g) was obtained: Y = 16.0570 + 0.6768[Formula: ... ...

    Abstract Using multiple regression analysis, a second-order equation reflecting the dependence of protein content (Y = Nₜₒₜ × 5.7%) in wheat grain on wet gluten content (X₁, %) and thousand kernel weight (TKW) (X₂, g) was obtained: Y = 16.0570 + 0.6768[Formula: see text] – 0.0032X₂ – 0.7891X₂ + 0.0083[Formula: see text]. In this equation, protein content is given in terms of absolutely dry matter (DM), and gluten content and TKW are given in terms of 12% moisture or air-dry matter (ADM). When using the developed equation for forecasting in cases where protein content was measured without taking into account grain moisture content (ADM) and TKW was measured in terms of DM, these indicators were recalculated using the coefficient of 1.136. Data on comparative assessment of predictive capabilities and accuracy of the equation developed here and the one proposed for Kazakhstan wheat, Y = 5.3270 + 0.3159X₁, are presented. The linear equation developed for Kazakhstan wheat reflects the dependence of protein content on wet gluten content in different cultivars only in a relatively narrow range of variation in grain protein content, 12.0–17.0%, while the equation developed here holds for almost the entire biological range, 7.9–21.1% DM.
    Keywords cultivars ; equations ; gluten ; grain protein ; protein content ; regression analysis ; water content ; wheat ; Kazakhstan
    Language English
    Dates of publication 2021-07
    Size p. 363-369.
    Publishing place Pleiades Publishing
    Document type Article
    ISSN 1068-3674
    DOI 10.3103/S1068367421040133
    Database NAL-Catalogue (AGRICOLA)

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