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At least 1,423 records · Page 79Linked to original sources
PubMed2004

Neutron activation analysis of ceramic tiles and its component and radon exhalation rate.

The concentrations of 20 trace elements in several ceramics tiles and ceramic composites used in Egypt were elementally analyzed by neutron activation analysis(NAA) technique. The samples and standard were irradiated with reactor for 4 h (in the Second Research Egyptian Reactor(Et-RR-2)) with thermal neutron flux 5.9 x 10(13) n/(cm2 x s). The gamma-ray spectra obtained were measured for several times by means of the hyper pure germanium detection system(HPGe). Also a solid state nuclear track detector(SSNTD) CR-39, was used to measure the emanation rate of radon for these samples. The radium concentrations were found to vary from 0.39-3.59 ppm and the emanation rates were found to vary from (0.728-5.688) x 10(-4) kg/(m2 x s). The elemental analysis of the ceramic tiles and ceramic composites have a great importance in assigning the physical properties and in turn the quality of the material.

Ceramics↗
PubMed2006

Asthmatics: too drunk to drive? The time curve of exhaled ethanol levels after use of Salamol in normal subjects.

Salamol, a new chlorofluorocarbon-free metered dose inhaler (MDI) containing salbutamol with small amounts of ethanol as a co-solvent, has been introduced in New Zealand. We evaluated the effect of breath alcohol levels after two inhalations from this MDI, and plotted a time-response curve. We tested 16 healthy volunteers. The breath alcohol levels rose to 1932 mcg/L immediately after inhalation with a standardised technique. We concluded that in all normal subjects their breath test was negative after 3 minutes, and at least a 5 minute wait post Salamol inhalation is necessary before roadside breath testing should be undertaken, otherwise a failed breath test is likely.

Administration, Inhalation↗