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Y-chromosomal diversity in Europe is clinal and influenced primarily by geography, rather than by language
(American Journal of Human Genetics, 2000)
Clinal patterns of autosomal genetic diversity within Europe have been interpreted in previous studies in terms of a Neolithic demic diffusion model for the spread of agriculture; in contrast, studies using mtDNA have ...
The L3A facility at the Vinca Institute: Surface modification of materials, by heavy ion beams from an electron cyclotron resonance ion source
(Review of Scientific Instruments, 2000)
This article describes the L3A experimental facility for surface modification of materials at the Vinca Institute of Nuclear Sciences, in Belgrade. This facility was completed and put into operation in May 1998. It is ...
Novel mechanism of steroid action in skin through glucocorticoid receptor monomers
(Molecular and Cellular Biology, 2000)
Glucocorticoids (GCs), important regulators of epidermal growth, differentiation, and homeostasis, are used extensively in the treatment of skin diseases. Using keratin gene expression as a paradigm of epidermal physiology ...
Direct synthesis of beta-FeSi2 by ion beam mixing of Fe/Si bilayers
(Applied Physics. A: Materials Science and Processing, 2000)
The iron di-silicide beta-FeSi2 is a promising direct band gap semiconductor but difficult to produce. Here, the successful direct synthesis of this phase by ion beam mixing of Fe/Si bilayers at temperatures in the range ...
Pb-210 in ground-level air in Belgrade city area
(Atmospheric Environment, 2000)
Concentrations of Pb-210 in ground level air in the city area (Belgrade, Central Serbia) were measured in the period from 1985 to 1996. The activity of Pb-210 in air filters was determined on a HPGe detector by standard ...
Reflection coefficient of low-energy ions as a universal function of the scaled transport cross section
(Applied Physics. A: Materials Science and Processing, 2000)
Multiple collision theory of heavy ion ranges in an infinite medium has been used to calculate the reflection coefficient from the penetration profile, by a method first described by Bottiger et al. Interaction with target ...
A multipurpose apparatus for studying the interaction of low energy ions with solid state surface
(Review of Scientific Instruments, 2000)
A new concept of a multipurpose device for the investigation of a low energy in beam interactions with solid state surfaces is realized in an apparatus for surface analysis by means of low energy ion scattering (LEIS), ...
Progress report on the mVINIS ion source
(Review of Scientific Instruments, 2000)
The mVINIS ion source is one of the major machines of the TESLA Accelerator Installation, at the Vinca Institute of Nuclear Sciences. It is an electron cyclotron resonance ion source with multiple applications. It can serve ...
Decay and slowing down of the multiquanta Davydov-like solitons in molecular chains
(Physical Review E, 2000)
Dynamics and the stability of the multivibron solitons in molecular chains have been examined by means of the perturbation method based upon the inverse scattering transform. We demonstrate that due to the coupling with ...
Stress relaxation in hematite nanoparticles-polystyrene composites
(Macromolecular Rapid Communications, 2000)
The viscoelastic behavior of a polystyrene matrix filled with hematite nanoparticles was investigated using the stress relaxation method. An increase in the elastic moduli of the composites, as well as in the magnitude of ...