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Precipitation of radiation belt electrons by magnetospherically reflected whistlers
(Journal of Geophysical Research - Space Physics, 1998)
We use a test particle simulation model based on gyro-averaged equations of motion to study the influence of oblique magnetospherically reflected (MR) whistlers on the near-loss-cone distribution function of radiation belt ...
The role of surface defects in HOPG on the electrochemical and physical deposition of Ag
(Journal of the Serbian Chemical Society, 1999)
The role of defects on a substrate surface during the initial stages of nucleation and growth of Ag deposited electrochemically and physically on highly oriented pyrolytic graphite (HOPG) has been observed ex situ by ...
Conditioning of the filament for diamond deposition by hot-filament chemical vapour deposition method
(Journal of the Serbian Chemical Society, 1998)
A tungsten filament, 0.12 mm in diameter, was conditioned by heating in a mixture of methane and hydrogen of three different concentration ratios. The filament was heated by an electric current. The procedure was carried ...
Codominant regulation of keratin gene expression by cell surface receptors and nuclear receptors
(Experimental Cell Research, 1996)
Epidermal keratinocytes are subject to a large variety of signals that modulate their differentiation in health and their activation in disease. Hormones and vitamins, which act via nuclear receptors, affect the differentiation ...
Cretaceous-Tertiary boundary layer at Stevns Klint (Denmark): copper and copper(II) porphyrins
(Journal of the Serbian Chemical Society, 1999)
High concentrations (up to 4000 ppm) of copper(rr) porphyrins have been detected in the kerogen of the Cretaceous/Tertiary (KT) boundary informal type sediment, the Fish Clay, at Stevns Klint, Denmark. These pigments have ...
Influence of sodium dodecyl sulfate on the reaction between Nile Blue A and hydrogen peroxide
(Journal of the Serbian Chemical Society, 1999)
The influence of the anionic surfactant sodium dodecyl sulfate on the rate of the reaction between the cationic form of Nile Blue A and hydrogen peroxide was investigated in the pH range from 5 to 8.5. A retardation of the ...
Specific organization of the negative response elements for retinoic acid and thyroid hormone receptors in keratin gene family
(Journal of Investigative Dermatology, 1997)
Retinoic acid and thyroid hormone are important regulators of epidermal growth, differentiation, and homeostasis, Retinoic acid is extensively used in the treatment of many epidermal disorders ranging from wrinkles to skin ...
Novel regulation of keratin gene expression by thyroid hormone and retinoid receptors
(Journal of Biological Chemistry, 1996)
Expression of keratin proteins, markers of epidermal differentiation and pathology, is uniquely regulated by the nuclear receptors for retinoic acid (RAR) and thyroid hormone (T3R) and their ligands: it is constitutively ...
Influence of the radioactive concentration of the in vitro stability of Tc-99m(Sn)-pyrophosphate
(Journal of the Serbian Chemical Society, 1999)
The in vitro stability of Tc-99m(Sn)-pyrophosphate solution was examined in dependence on the preparation conditions of the samples, the radioactive concentration of Tc-99m in the kit and the time elapsed after labeling. ...
Sol-gel derived silicon nitride powders
(Journal of the Serbian Chemical Society, 1999)
The sol-gel synthesis of silicon nitride powders has been studied. The precursor gels were prepared from a colloidal dispersion of silicon dioxide and sucrose, with mole ratios of reactants, C/SiO2, ranging from 2 to 4. ...