Results 21 to 30 of about 4,147,464 (171)

First Stars VIII -- Enrichment of the neutron-capture elements in the early Galaxy [PDF]

open access: yes, 2007
Our aim is to measure accurate, homogeneous neutron-capture element abundances for the sample of 32 EMP giant stars studied earlier in this series, including 22 stars with [Fe/H] $< -$3.0. Based on high-resolution, high S/N spectra from the ESO VLT/UVES,
Abel   +89 more
core   +4 more sources

Flux penetration and a.c. losses in type II superconductors: I. Model calculations [PDF]

open access: yes, 1981
A numerical method is presented which allows the calculation of the a.c. response of type II superconductors under quasi-static conditions for arbitrary jc (B,x), Ben (Ba) and Bex (Ba) relations.
Gijsbertse, E.A.   +2 more
core   +2 more sources

Development of knowledge management infrastructure in organization [PDF]

open access: yesMarketing i Menedžment Innovacij, 2016
The aim of the article. The aim of the article is to analyze development of knowledge management infrastructure (KM infrastructure) at various stages of knowledge management evolution at organization. The results of the analysis. KM infrastructure is an
N.I. Sytnik
doaj  

Superconducting properties of Gd-Ba-Cu-O single grains processed from a new, Ba-rich precursor compound [PDF]

open access: yes, 2008
Gd-Ba-Cu-O (GdBCO) single grains have been previously melt-processed successfully in air using a generic Mg-Nd-Ba-Cu-O (Mg-NdBCO) seed crystal. Previous research has revealed that the addition of a small amount of BaO2 to the precursor powders prior to ...
D A Cardwell   +6 more
core   +1 more source

Effects of Different Concentrations of Plant Growth Regulators on Callus Induction and Shoot Regeneration in St. John’s Wort (Hypericum perforatum) [PDF]

open access: yesمجله بیوتکنولوژی کشاورزی, 2019
Objective St. John’s wort belongs to Hypericaceae family and has been used since ancient Greeks as a herb for the treatment of anxiety, depression, wounds and burns.
Mehdi Soltanpour   +2 more
doaj   +1 more source

INFLUENCE OF BENZYLADENINE AND KRISTALON FERTILIZER TREATMENTS ON GROWTH AND CHEMICAL CONSTITUENTS OF LEMON CYPRESS (CUPRESSUS MACROCARPA L.) PLANT [PDF]

open access: yesScientific Journal of Flowers and Ornamental Plants, 2020
A pot experimental trial was carried out during 2017 and 2018 seasons, to study the effect of 16 treatments, which were represented by the combinations between four concentrations of benzyladenine (BA), i.e. 0, 50, 75 and 100 ppm and kristalon fertilizer
Y. Ghatas
doaj   +1 more source

Chemical abundance analysis of 19 barium stars

open access: yes, 2016
We aim at deriving accurate atmospheric parameters and chemical abundances of 19 barium (Ba) stars, including both strong and mild Ba stars, based on the high signal-to-noise ratio and high resolution Echelle spectra obtained from the 2.16 m telescope at
Chen, Y. Q.   +12 more
core   +3 more sources

Aggregation in a mixture of Brownian and ballistic wandering particles

open access: yes, 2006
In this paper, we analyze the scaling properties of a model that has as limiting cases the diffusion-limited aggregation (DLA) and the ballistic aggregation (BA) models.
A.-L. Barabasi   +4 more
core   +1 more source

ASSESSMENT OF 16-YEAR-OLD FEMALE BASKETBALL PLAYERS WITH CHRONOJUMP SYSTEM [PDF]

open access: yesJournal of Applied Sports Sciences
In the basketball game, lower extremity strength plays a key role in various game actions. The jumping mat (Chronojump), an open-source (free software and open hardware), is available to the public on official servers, emphasizing peer review and ...
Mariana Borukova, Ivan Kalinov
doaj   +3 more sources

Self-field effects upon the critical current density of flat superconducting strips

open access: yes, 2004
We develop a general theory to account self-consistently for self-field effects upon the average transport critical current density Jc of a flat type-II superconducting strip in the mixed state when the bulk pinning is characterized by a field-dependent ...
Ali A Babaei Brojeny   +6 more
core   +1 more source

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