Search Results - (Author, Cooperation:D. Nesheva)

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  1. 1
    I. Lazaridis ; N. Patterson ; A. Mittnik ; G. Renaud ; S. Mallick ; K. Kirsanow ; P. H. Sudmant ; J. G. Schraiber ; S. Castellano ; M. Lipson ; B. Berger ; C. Economou ; R. Bollongino ; Q. Fu ; K. I. Bos ; S. Nordenfelt ; H. Li ; C. de Filippo ; K. Prufer ; S. Sawyer ; C. Posth ; W. Haak ; F. Hallgren ; E. Fornander ; N. Rohland ; D. Delsate ; M. Francken ; J. M. Guinet ; J. Wahl ; G. Ayodo ; H. A. Babiker ; G. Bailliet ; E. Balanovska ; O. Balanovsky ; R. Barrantes ; G. Bedoya ; H. Ben-Ami ; J. Bene ; F. Berrada ; C. M. Bravi ; F. Brisighelli ; G. B. Busby ; F. Cali ; M. Churnosov ; D. E. Cole ; D. Corach ; L. Damba ; G. van Driem ; S. Dryomov ; J. M. Dugoujon ; S. A. Fedorova ; I. Gallego Romero ; M. Gubina ; M. Hammer ; B. M. Henn ; T. Hervig ; U. Hodoglugil ; A. R. Jha ; S. Karachanak-Yankova ; R. Khusainova ; E. Khusnutdinova ; R. Kittles ; T. Kivisild ; W. Klitz ; V. Kucinskas ; A. Kushniarevich ; L. Laredj ; S. Litvinov ; T. Loukidis ; R. W. Mahley ; B. Melegh ; E. Metspalu ; J. Molina ; J. Mountain ; K. Nakkalajarvi ; D. Nesheva ; T. Nyambo ; L. Osipova ; J. Parik ; F. Platonov ; O. Posukh ; V. Romano ; F. Rothhammer ; I. Rudan ; R. Ruizbakiev ; H. Sahakyan ; A. Sajantila ; A. Salas ; E. B. Starikovskaya ; A. Tarekegn ; D. Toncheva ; S. Turdikulova ; I. Uktveryte ; O. Utevska ; R. Vasquez ; M. Villena ; M. Voevoda ; C. A. Winkler ; L. Yepiskoposyan ; P. Zalloua ; T. Zemunik ; A. Cooper ; C. Capelli ; M. G. Thomas ; A. Ruiz-Linares ; S. A. Tishkoff ; L. Singh ; K. Thangaraj ; R. Villems ; D. Comas ; R. Sukernik ; M. Metspalu ; M. Meyer ; E. E. Eichler ; J. Burger ; M. Slatkin ; S. Paabo ; J. Kelso ; D. Reich ; J. Krause
    Nature Publishing Group (NPG)
    Published 2014
    Staff View
    Publication Date:
    2014-09-19
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Agriculture/history/manpower ; Asia/ethnology ; Europe ; European Continental Ancestry Group/*classification/*genetics ; Genome, Human/*genetics ; History, Ancient ; Humans ; Population Dynamics ; Principal Component Analysis
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Nesheva, D. ; Kotsalas, I. P. ; Raptis, C.

    [S.l.] : American Institute of Physics (AIP)
    Published 1999
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The Raman spectra of amorphous Se/Se100−xTex multilayers (AMLs) of various compositions and sublayer thicknesses have been measured at room and low temperature (38 K) with the aim to assess the thermal and absorption effects of laser illumination on the structural stability of the AMLs. Under thermal treatment at room temperature (mediated by increasing gradually the power of the probing laser line), the AML stability (manifested by the rate of Se crystallization) increases with decreasing Se100−xTex sublayer thickness and with decreasing Te content. However, in single layers (2 μm thickness) of Se100−xTex, we have observed the opposite effect, that is, the stability of single layers increases with increasing Te content. This apparent contradiction is explained in terms of thermodynamic energy considerations stated previously [K. Tanaka et al., Mater. Res. Soc. Symp. Proc. 118, 343 (1988)] and of a higher crystallization temperature of Se sublayers in the AMLs than that of bulk Se of the single layer. In order to eliminate (or, at least, reduce considerably) the thermal effects of laser illumination and study the photoinduced structural changes (due to absorption) in Se/Se100−xTex AMLs, low temperature (38 K) measurements were carried out using the 530.9 nm Kr+ laser line which is strongly absorbed by these AMLs. The rate of photoinduced crystallization increases with increasing Te content, which means that their stability to photoinduced changes is (again) higher, the lower the Te content. This is in agreement with previous results concerning three-dimensional Se100−xTex alloys, implying that the dimensionality change (from 3 in the alloys to 2 in the AMLs) does not affect significantly the Se–Se and Se–Te bond energies. © 1999 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.371467

    Articles: DFG German National Licenses
  3. 3
    Nesheva, D. ; Aneva, Z. ; Gospodinov, M.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0022-3697
    Keywords:
    BSO ; dark current ; doping ; photocurrent ; recombination centers ; trap
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0022-3697(93)90256-Q

    Articles: DFG German National Licenses
  4. 4
    Nesheva, D. ; Vateva, E. ; Georgieva, I.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0022-3697
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0022-3697(84)90119-7

    Articles: DFG German National Licenses
  5. 5
    Nesheva, D. ; Aneva, Z. ; Levi, Z.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0022-3697
    Keywords:
    A. inorganic compounds ; D. defects ; D. electrical properties ; D. optical properties
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0022-3697(94)90013-2

    Articles: DFG German National Licenses
  6. 6
    Nesheva, D.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0038-1101
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Electrical Engineering, Measurement and Control Technology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0038-1101(87)90144-4

    Articles: DFG German National Licenses
  7. 7
    Ionov, R. ; Nesheva, D.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0038-1098
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0038-1098(92)90728-R

    Articles: DFG German National Licenses
  8. 8
    Ionov, R. ; Nesheva, D.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0040-6090
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0040-6090(92)90287-L

    Articles: DFG German National Licenses
  9. 9
    Nesheva, D. ; Rashev, S.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0040-6090
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0040-6090(90)90020-E

    Articles: DFG German National Licenses
  10. 10
    Pashmakov, B. ; Nesheva, D. ; Vateva, E. ; Dimitrov, D. ; Metev, S.
    Springer
    Published 1985
    Staff View
    ISSN:
    1573-4811
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00719740

    Articles: DFG German National Licenses
  11. 11
    Nesheva, D. ; Arsova, D. ; Ionov, R.
    Springer
    Published 1993
    Staff View
    ISSN:
    1573-4803
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes:
    Abstract Low conductive and photosensitive CdSe films were deposited on substrates at room temperature. X-ray diffraction spectra showed a microcrystalline cubic structure for film thicknesses greater than 20 nm and an amorphous structure for film thicknesses below 10 nm. An optical band gap, E g 0 , of 1.6 eV was determined using the Tauc-dependence usually employed for amorphous semiconductors. The dark conductivity, σ, of 10−9 Ω−1 cm−1 was measured in the as-deposited state, but an increase of five orders of magnitude was observed after heating the layer above 450 K. High photosensitivity was observed under illumination with white light as well as with monochromatic light over a wide spectral region (400–750 nm). A conclusion is reached concerning the existence of compensated donor and acceptor defects in the as-deposited state.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00367581

    Articles: DFG German National Licenses