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Biomedical subjects

D R Adams

Publications and source records attributed to D R Adams.

44 records · Page 3Linked to original sources
PubMed1971

Effect of stomatal opening on the transfer of 131I2 from air to grass.

The effect of stomatal opening on the air-to-trass transfer of molecular iodine gas (I2) was studied in a small environmental chamber with an airflow rate of about 1 m/sec above the grass. Measured stomatal densities and stomatal areas were used to determine the per cent of Bromegrass leaf area composed of stomatal openings (As). The transfer parameter Pt(g-1) (analogous to the normalized transfer velocity) was found to be directly dependent upon stomatal opening as measured by As: Pt = 2.21 X 10(-4) + (4.60 X 10(-4) As. The maximum value of Pt observed was 5.43 X 10(-4) g-1 or 2.4 times that observed for As approximately 0. This proportionality to pore area is in agreement with measured diffusion rates through perforated metal screens. It was also found that Bromegrass is far from a "perfect sink" for sorption of 131I2, a fact which must be considered in the development of models of radioiodine transfer. Retention of radioiodine by contaminated foliage is dependent on the radioiodine transfer process and the implications of the current results are indicated.

Air Pollution, Radioactive↗
PubMedDate not supplied

Affecting legislation on the state level--the experiences of MMGMA and MAC.

Since many political battles over healthcare legislation occur at the state level, it is vital that medical groups become involved with key groups and legislators in their states. The experiences of Minnesota and California managers in rallying behind healthcare legislation is offered as an example to other states, as well as a history of MGMA's involvement with national healthcare issues.

California↗