31 Result(s)

Article

Theoretical Analysis of Mechanical Vibrations

A method is proposed for transforming a mechanical system described by arbitrary generalized coordinates into a system described by primary coordinates. To this end, an elastic element with negative rigidity i...

A. A. Rykov, G. S. Yur’ev in Russian Engineering Research (2019)

Article

Passive automatic control of a vibrationally protected object

Passive automatic control of a vibrationally protected object by means of a low-frequency elastic suspension is considered. The carrying capacity of the suspension is regulated by a hydraulic lever or else ele...

G. S. Yur’ev, A. A. Rykov in Russian Engineering Research (2015)

Article

System for the creation of complex impact loads

Existing systems for the creation of impact loads are modified by adding vibrations in tests of electronic equipment, without changing the basic operating conditions.

A. A. Rykov, G. S. Yur’ev in Russian Engineering Research (2014)

Article

Synthesis of an active vibrational-protection system

The synthesis of active vibrational-protection systems is considered for the example of a spring in longitudinal-transverse flexure whose static force-displacement characteristic corresponds approximately to a...

G. A. Kurilenko, G. S. Yur’ev, A. A. Rykov in Russian Engineering Research (2014)

Article

Why detonation nanodiamonds are small

Based on X-ray diffraction patterns and an original atom distribution calculation by the proposed computer models, we infer that there exist high-quality and poor-quality detonation nanodiamonds. It has been d...

V. Yu. Dolmatov, G. S. Yur’ev, V. Myllymäki… in Journal of Superhard Materials (2013)

Article

Synchrotron X-ray diffraction analysis of a cast nickel alloy after barothermal action

Synchrotron X-ray diffraction analysis of a nickel superalloy subjected to barothermal treatment (BTT) at 1235, 1260, and 1320°C is performed using a high-power synchrotron radiation source. The alloy is found...

A. G. Padalko, G. S. Yur’ev, G. I. Zubarev, V. I. Tsarev… in Russian Metallurgy (Metally) (2011)

Article

X-ray diffraction study of detonation nanodiamonds

The paper addresses a structural analysis of detonation nanodiamonds. An analysis procedure is described which has been elaborated on the basis of a comparison between experimental and theoretical diffraction ...

G. S. Yur’ev, V. Yu. Dolmatov in Journal of Superhard Materials (2010)

Article

Dilute magnetic semiconductor: Magnesium-doped Zn_0.9Cd_0.1GeAs₂

Dilute magnetic semiconductors based on manganese-doped Zn_0.9Cd_0.1GeAs₂ solid solution with various do** levels were synthesized. Their Curie point in 5-T magnetic field was 349 K. Ferromagnetic ordering in the...

V. M. Novotortsev, I. S. Zakharov, A. V. Kochura… in Russian Journal of Inorganic Chemistry (2008)

Article

Ferromagnetism of manganese-doped InSb alloys

InSb samples containing 0.22–1.42 wt % manganese were synthesized and identified. The unit cell parameter decreased as the manganese concentration increased. The samples contained microinclusions of manganese ...

V. M. Novotortsev, I. S. Zakharov, A. V. Kochura… in Russian Journal of Inorganic Chemistry (2006)

Article

Structure of nanodiamonds

The structure of nanodiamonds is considered within the model of icosahedral nanoparticles with a local diamond-like order and a shell structure. The diffraction from nanoparticles with noncrystallographic (in ...

V. Ya. Shevchenko, A. E. Madison, G. S. Yur’ev in Glass Physics and Chemistry (2006)

Article

Structure of Detonation Diamond Nanoparticles

Diamond nanoparticles produced via trinitrotoluene/cyclomethylenetrinitramine detonation are shown to have a tetragonal structure with lattice parameters a = 3.585 Å and c= 3.45 Å. The synchrotron x-ray diffracti...

A. L. Vereshchagin, G. S. Yur'ev in Inorganic Materials (2003)

Article

Preparation, Structure, and Optical Properties of Thin ZnAs₂ Films

X-ray amorphous ZnAs₂ films were produced on various transparent substrates by thermal evaporation. The composition of the films was found to depend on the source temperature. Stoichiometric films were deposited ...

S. F. Marenkin, V. A. Morozova, G. S. Yur'ev, A. Yu. Vol'fkovich… in Inorganic Materials (2002)

Article

Morphology and Structure of BN and B4C Nanocrystals

The morphology and structure of BN and B₄C nanocrystals in thin layers produced on Si substrates by plasma-enhanced chemical vapor deposition from triethylamineborane were studied before and after exposure to syn...

V. Ya. Shevchenko, G. S. Yur'ev in Inorganic Materials (2001)

Article

Coexistence of Cubic and Tetragonal Structures in Yttria-Stabilized Zirconia Nanoparticles

Experimental evidence is presented for the coexistence of cubic and tetragonal phases in yttria partially stabilized zirconia nanoparticles (“centaurs”).

V. Ya. Shevchenko, O. L. Khasanov, G. S. Yur'ev, Yu. F. Ivanov in Inorganic Materials (2001)

Article

Structural Features of Ultrafine Zirconia as Probed by Synchrotron X-ray Diffraction

V. Ya. Shevchenko, O. L. Khasanov, G. S. Yur'ev… in Doklady Physical Chemistry (2001)

Article

Thermal transformations of tetramethylammonium(III) bis-(π-(3)-1,2-dicarbollyl)cobaltate

The thermal transformations of (CH₃)₄N⁺[Co^III(π-(3)-1,2-B₉C₂H₁₁)₂ ]⁻ in the 25–1050°C range were investigated by DTA, IR spectroscopy, x-ray diffraction, and chemical analysis. The temperatures of the phase trans...

V. V. Volkov, G. S. Yur'ev, S. G. Vasil'eva… in Bulletin of the Academy of Sciences of the… (1990)

Article

Thermal changes in decahydro-closo-decaborate(2-)copper(I) Cu₂B₁₀H₁₀ and the nature of copper borides

Thermal changes in Cu₂B₁₀H₁₀ have been studied over the temperature range 25–800‡C using DTA, gas-volume, IR-spectroscopic, and x-ray phase analytical methods. Decomposition of the salt starts at 290‡C and is acc...

V. V. Volkov, G. S. Yur'ev… in Bulletin of the Academy of Sciences of the… (1990)

Article

X-ray investigation of the structure of liquid bromine trifluoride

V. N. Mit'kin, G. S. Yur'ev, S. V. Zemskov… in Journal of Structural Chemistry (1987)

Article

New integral equation for the calculation of the structure and properties of dense liquids

The modification of the relationship between the direct correlation function c(r) and the potential Φ(r) and the complete correlation function h(r), which has been carried out in the present work and in earlie...

Yu. N. Vorob'ev, G. S. Yur'ev, Yu. I. Naberukhin in Journal of Structural Chemistry (1977)

Article

Interion interaction in melts of iron, cobalt, and nickel

Yu. N. Vorob'ev, G. S. Yur'ev, E. A. Klimenkov, B. A. Baum… in Soviet Physics Journal (1977)