This report examines how to sample airborne radioactivity with minimal complexity and time expenditure, using conventional high-volume samplers in combination with alpha-particle spectrometry. The use of alpha spectrometry provides compensation for radon/thoron decay products collected on the filter paper of the sampler, leading to a seven-fold improvement in measurement sensitivity of artifici...

An ill-defined, 15-mm nodular lesion in the left lower lung was noted on a radiograph during an annual health check-up of a 61-year-old female who had never smoked. A physical examination and laboratory study results were unremarkable. Chest CT demonstrated a well-demarcated pure GGO nodule in the inferior lobe of the left lung. The nodule, measuring 15613 mm, was located in the anteromedial ba...

Radioligand binding assays take advantage of the ability to detect the decay of radioactive material, which can be incorporated into a ligand of choice. The interaction of such a radioligand with a receptor preparation can subsequently be determined by capturing and measuring the amount of radioactivity present. Radioligand binding assays can be used to estimate molecular parameters, such as th...

A number of methods of measuring equilibria between solids and compressed gases have recently been described 1 and the results have been discussed in terms of molecular interactions in the gas phase.2 In the present paper, the experimental method used to investigate the system p-chloro.iodobenzene + ethylene will be described and the results will be given in detail. The measurements consisted i...

The radioactivity in human tissues (lungs) obtained from the dead body of people who died by lung cancer in the region of Ptolemais, Northern Greece, where 16 units of 4 major coal-fired power plants are in operation, was studied. The specific activities of radioactive nuclides searched for in human tissues were not remarkable. The syndrome of lung cancer deaths at that area which showed an inc...

Information available on the molecular mechanism of neurotransmitter release is minimal. However, it has been demonstrated that purified preparations of brain synaptosomes are extremely useful for biochemical studies on the uptake and release of neurotransmitters (de Belleroche & Bradford, 1972; Wonnacott & Marchbanks, 1976). Moreover, electrophysiological and pharmacological studies have shown...