Now showing items 11-20 of 467
The role of solitons in charge and energy transfer in 1D molecular chains
(Physica. D: Nonlinear Phenomena, 1998)
The idea that polarons and solitons could play the crucial role in the transport processes in biological structures, has been critically reexamined on the basis of the general theory of self-trapping phenomena. The criteria ...
Mechanically activated transition of anatase to rutile
(American Ceramic Society Bulletin, 1997)
During vibromilling, transformation of anatase to rutile was detected, with 89% phase transformation after 600 min of grinding. Partially activated anatase required additional heating.
Prevention and recovery of CuSO4-induced inhibition of Na+/K+-ATPase and Mg2+-ATPase in rat brain synaptosomes by EDTA
(Toxicology Letters, 1999)
Enzymatic activities of Na+/K+-ATPase and Mg2+-ATPase from rat brain synaptic plasma membrane were studied in the absence and presence of EDTA. The aim of the study was to examine the ability of this strong chelator to ...
Modified pyrophosphate-Tc-99m kit for application in nuclear cardiology
(Journal of Radioanalytical and Nuclear Chemistry, 1998)
A modified Tc-99m(Sn)-pyrophosphate (PyP) kit for the application in nuclear cardiology (radioventriculography, angiocardiography, scintigraphy of blood pool) was developed. Each vial contains 12 mg PyP (Na4P2O7), 4 mg ...
Classification and existence of polarons and solitons in molecular chains: Phase diagram
(Solid State Phenomena, 1998)
The problem of the existence and stability of various types of self-trapped (ST) states (polarons) in 1-d molecular systems has been analysed within the framework of the general theory of self-trapping phenomena. An ...
Gas chromatography mass spectrometry determination of isosorbide 5-mononitrate and related impurities in raw materials and dosage formulations
(Journal of Pharmaceutical and Biomedical Analysis, 1997)
A straightforward quantitative method for gas chromatography-mass spectrometry determination of isosorbide 5-mononitrate (ISSMN) and its related impurities such as isosorbide (IS), isosorbide diacetate (ISDA) and isosorbide ...
Superoxide dismutase activities in different tissues of female rats treated with olive oil
(Physiological Research, 1997)
The activities of cytosol superoxide dismutase (CuZnSOD) and mitochondrial superoxide dismutase (MnSOD) were measured in subcellular fractions of homogenates prepared from the brain, thymus and liver of ovariectomized (OVX) ...
Mechanochemical synthesis of PbTiO3 from PbO and TiO2
(Journal of Alloys and Compounds, 1998)
Data on mechanochemical synthesis of PbTiO3 from PbO and TiO2 without subsequent heating of activated mixtures are presented. Physical and chemical processes occurring during mechanical activation are followed by the X-ray ...
Shelf-life of Tc-99m(Sn)-pyrophosphate
(Journal of Radioanalytical and Nuclear Chemistry - Letters, 1996)
The effect of the preparation conditions on the in vitro stability of Tc-99m(Sn)-pyrophosphate kit solution has been examined. To extend the shelf-life of the preparation, different methods of protection were tested. ...
Temporal variations of the radioactivity in the near ground layer of air
(Radiochimica Acta, 1996)
The concentration of radionuclides in the layer of air above the ground continuously varies due to entry and exit of radionuclides both from the earth and atmosphere and decay processes. We have tried to establish the ...