Biomedical subjects
Publications and source records attributed to M L Frank.
The seasonal variation in suicide in the USA was not more pronounced in 1980 in northern regions but was more clear for married people than for those with other marital statuses. The seasonal variation in suicide was not associated with the gross domestic product of the region.
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A three-year survey of college students was conducted to ascertain the frequency and preferences of student gambling at nearby casinos in Atlantic City, New Jersey. The data suggest that gambling by underage college students is common and indicates that age control at casino entrances is quite poor. An additional finding of differential memory for wins and losses suggests the need for an information processing analysis of memory for gambling outcomes.
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A study of the states of the United States showed that suicide rates using car exhaust were lower in states that had lower rates of car ownership, a greater proportion of the population living in non-urban areas and that were further north. The implications of these results for a public health approach to suicide prevention are discussed.
An attempt was made to replicate in the USA sex differences reported for the seasonal distribution of suicide in the UK, Finland and Australia. No sex differences were found. Spring and late summer peaks were found for suicides by both males and females. The method of suicide was found to be an important factor in the seasonal distribution of the suicides of males and females.
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Concentration factors for technetium recommended in radiological assessment models for freshwater biota are default values based on the behavior of iodine in the environment. In this study a small experimental freshwater pond was spiked with 95mTc to obtain data for calculating concentration factors for fish and snails. A model using the pond data was developed to calculate steady-state body burdens for freshwater biota. The concentration factors based on the calculated body burden for carp (Caprinus carpio), mosquitofish (Gambusia affinis), and snails (Helisoma sp.) were 11, 75 and 121, respectively. The concentration factor for carp was less than the recommended value of 15 listed in the USNRC Regulatory Guide 1.109 for calculating radiation dose to man; however, the concentration factors for mosquitofish and snails exceeded the recommended values by 5 and 24 times, respectively.
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