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  • 1
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    Temperature-driven phase transformation in Y_{3}Co: Neutron scattering and first-principles studies (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-07-27
    Description: Author(s): A. Podlesnyak, G. Ehlers, H. Cao, M. Matsuda, M. Frontzek, O. Zaharko, V. A. Kazantsev, A. F. Gubkin, and N. V. Baranov Contrary to previous studies that identified the ground state crystal structure of the entire R 3 Co series ( R is a rare earth) as orthorhombic P n m a , we show that Y 3 Co undergoes a structural phase transition at T t ≃160 K. Single crystal neutron diffraction data reveal that at T t the trigonal prisms for... [Phys. Rev. B 88, 024117] Published Fri Jul 26, 2013
    Keywords: Structure, structural phase transitions, mechanical properties, defects
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    On the theory of plasticity, associated with a new integral characteristic of shearing stresses (2015)
    Institute of Physics (IOP)
    Details
    Publication Date: 2015-09-15
    Description: A new invariant of stress tensor is introduced - the mean shearing stress, resulted from the integration with respect to Mohr's circle. The invariant is used to lay down the terms of plasticity. Determining equations are written on the basis of associated flow law. Rigid variants of the model and elastoplastic ones are obtained. Characteristic surfaces with normals, coinciding with main stresses direction are demonstrated for the rigid-plastic variant.
    Print ISSN: 1757-8981
    Electronic ISSN: 1757-899X
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Institute of Physics (IOP)
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  • 3
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    Spectral analysis of granular material reaction to long-term weak dynamic effect (2015)
    Institute of Physics (IOP)
    Details
    Publication Date: 2015-09-15
    Description: The paper demonstrates the similarity of alternating reaction of rocks to explosions to the response of a granular material to repetitive (up to 330 thousands) light shocks (3.85 -10 3 J, frequency 1.33 Hz). The cause of both reactions is multiple forms of equilibrium of geomaterials. It has been stated that pressure of the sensor in a granular material subject to long-term weak effects doesn't relax to the hydrostatic one, but oscillates about it with the amplitude about its value. The spectral density of this process obeys the power dependence on the frequency; the exponent is typical for black noise.
    Print ISSN: 1757-8981
    Electronic ISSN: 1757-899X
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Institute of Physics (IOP)
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  • 4
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    Role of mouse cryptochrome blue-light photoreceptor in circadian photoresponses (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-20
    Description: Cryptochromes are photoactive pigments in the eye that have been proposed to function as circadian photopigments. Mice lacking the cryptochrome 2 blue-light photoreceptor gene (mCry2) were tested for circadian clock-related functions. The mutant mice had a lower sensitivity to acute light induction of mPer1 in the suprachiasmatic nucleus (SCN) but exhibited normal circadian oscillations of mPer1 and mCry1 messenger RNA in the SCN. Behaviorally, the mutants had an intrinsic circadian period about 1 hour longer than normal and exhibited high-amplitude phase shifts in response to light pulses administered at circadian time 17. These data are consistent with the hypothesis that CRY2 protein modulates circadian responses in mice and suggest that cryptochromes have a role in circadian photoreception in mammals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thresher, R J -- Vitaterna, M H -- Miyamoto, Y -- Kazantsev, A -- Hsu, D S -- Petit, C -- Selby, C P -- Dawut, L -- Smithies, O -- Takahashi, J S -- Sancar, A -- GM20069/GM/NIGMS NIH HHS/ -- GM31082/GM/NIGMS NIH HHS/ -- P0 AG11412/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1998 Nov 20;282(5393):1490-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Biophysics, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9822380" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle Proteins ; Circadian Rhythm/*physiology ; Cryptochromes ; *Drosophila Proteins ; *Eye Proteins ; Female ; Flavoproteins/genetics/*physiology ; Gene Expression Regulation ; Gene Targeting ; In Situ Hybridization ; *Light ; Male ; Mice ; Mice, Inbred C57BL ; Motor Activity ; Mutation ; Nuclear Proteins/genetics ; Period Circadian Proteins ; *Photoreceptor Cells, Invertebrate ; Photoreceptor Cells, Vertebrate/*physiology ; Receptors, G-Protein-Coupled ; Suprachiasmatic Nucleus/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Does the p53 up-regulated Gadd45 protein have a role in excision repair? (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-11-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kazantsev, A -- Sancar, A -- 32833/PHS HHS/ -- New York, N.Y. -- Science. 1995 Nov 10;270(5238):1003-4; author reply 1005-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7481776" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; Cell-Free System ; DNA Damage ; *DNA Repair ; HeLa Cells ; Humans ; Intracellular Signaling Peptides and Proteins ; Proliferating Cell Nuclear Antigen/metabolism ; Proteins/metabolism/*pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
    Electronic Resource
    Electronic Resource
    An anomalous correlator of resonantly scattered light (1982)
    Springer
    Applied physics 27 (1982), S. 83-91 
    Details
    ISSN: 1432-0649
    Keywords: 42.65 ; 06 ; 35 ; 07.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The space-time properties of the correlator of the light intensities scattered from resonant atoms are studied. It is shown that in measuring such a correlator by the method of optical shifts, an appreciable contribution appears from the anomalous correlator of the scattered field amplitudes. It is simple to observe this correlator in the field of a standing wave by measuring the correlation of oppositely scattered rays. The spectral and polarization properties of such a correlator are studied. Its investigation is of interest for high-resolution spectroscopy because it allows information to be obtained on the natural width of a line in conditions of strong Doppler broadening. It is important to stress that this is possible in a linear approximation with respect to the strength of the external field in contrast to the methods of laser spectroscopy based on nonlinear effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697554
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  • 7
    Electronic Resource
    Electronic Resource
    Interference of atom, and atomic spatial lattices in light fields (1985)
    Springer
    Applied physics 36 (1985), S. 167-169 
    Details
    ISSN: 1432-0649
    Keywords: 32 ; 42.50 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A scheme is proposed to observe interference of atoms by using a weakly coherent atomic beam scattered at two standing light waves. It is shown that atoms can transfer spatial coherence over rather large distances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00691783
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  • 8
    Electronic Resource
    Electronic Resource
    Perseid meteor stream 1991 – 1993 from TV observations in Kiev (1995)
    Springer
    Earth, moon and planets 68 (1995), S. 297-301 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Some results of the double station television meteor observations provided in Kiev during the Perseid shower period in years 1991 – 1993 are presented. The dependence of the beginning hights of meteors on their initial velocities based on 57 best reduced double station meteors is constructed. Exceptionaly great beginning heights of meteors are discussed, as well as the exceptional case of a Perseid bolide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00671520
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  • 9
    Electronic Resource
    Electronic Resource
    The scattering of slow atoms by light (1981)
    Springer
    Applied physics 25 (1981), S. 165-167 
    Details
    ISSN: 1432-0630
    Keywords: 32
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A kinetic equation has been obtained describing the motion of atoms in a resonant field of standing light wave. This equation is used to describe the scattering of atoms for conditions close to experimental ones [1]. It is shown that the dependence of atomic scattering has a dip at the resonance frequency of the field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00901291
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  • 10
    Electronic Resource
    Electronic Resource
    Study of light absorption in n-type and p-type GaInAs and the possibility of making 1.55-μm GaInAs/InP Bragg mirrors (1999)
    Springer
    Journal of materials science 10 (1999), S. 255-257 
    Details
    ISSN: 1573-482X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Effects of impurity doping on optical properties of epitaxially grown Ga0.47In0.53As semiconductors lattice-matched to InP have been studied. The absorption coefficient decreased and the photoluminescent peak energy increased at very high doping levels, due to a Burstein–Moss shift. Absorption in n-type Ga0.47In0.53As was negligible at a wavelength of 1.55 μm when the donor (Si) concentration was higher than 7.7 × 1018cm−3, but was higher than 4000 cm−1 at λ = 1.3 μm. Absorption in p-type Ga0.47In0.53As was 2600 cm−1 and 7000 cm−1 at 1.55 and 1.3 μm, respectively, when the acceptor (Be) concentration was 3.4 × 1019cm−3. Emission from n-type Ga0.47In0.53As experienced a maximum shift of 170 meV towards higher energies relative to emission from undoped Ga0.47In0.53As, while emission from p-type Ga0.47In0.53As shifted 45 meV. The Burstein–Moss effect was used in growth of 1.55-μm distributed Bragg mirrors having 20 pairs of quarter-wave n−Ga0.47In0.53As/InP layers. Reflectivity greater than 95% and a stop-band width of 60 nm were demonstrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008908415428
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