Radon induced hyperplasia may provide an explanation for inverse exposure rate effect

Effect of Activity Patterns on Radon Exposure

An important goal of those concerned with air pollution is to estimate the time-weighted average exposure to various indoor air pollutants. Various studies have measured the concentration of pollutant for indoor environments, but without regard to the presence of humans. Other studies have used diaries and other records to evaluate the activity patterns relative to various environments, indoor ...

an appropriate model for exchange rate predictability in iran: comparing potential forecastability

nowadays in trade and economic issues, prediction is proposed as the most important branch of science. existence of effective variables, caused various sectors of the economic and business executives to prefer having mechanisms which can be used in their decisions. in recent years, several advances have led to various challenges in the science of forecasting. economical managers in various fi...

Dose-rate Effects on Lung Cancers Induced by Exposure to Radon Progeny in Rats

Exposure to atmospheric radon.

We measured radon (222Rn) concentrations in Iowa and Minnesota and found that unusually high annual average radon concentrations occur outdoors in portions of central North America. In some areas, outdoor concentrations exceed the national average indoor radon concentration. The general spatial patterns of outdoor radon and indoor radon are similar to the spatial distribution of radon progeny i...

Firm-Specific Learning and the Nature of the Firm: Why Transaction Cost Theory May Provide an Incomplete Explanation

This article discusses the limits of the transaction cost explanation of the existence of the firm. It develops three simple models that compare the profitability of firms and markets, two without transaction costs related to market trading. In both firms and markets it is assumed that skills increase due to a static specialisation effect. In addition, in the first two models, firms benefit fro...