Increasing energy costs and environmental concerns have stimulated the development of sustainable approaches to the replacement of petrochemical processes.
In recent years, both environmental and economic concerns have stimulated a strong interest in using natural gas for internal combustion engines.
Now that sustained high oil prices and environmental concerns have stimulated massive efforts to develop alternative fuel sources, the oil industry pooh-bahs are finally realizing they have overstepped themselves.
On the contrary, growing concern for public health has stimulated the European Commission to set maximum permissible limits for major toxic ingredients in feed.
However, it is worthwhile to mention that the more recent concern about radiation exposure has stimulated a focus on dose saving techniques.
The negative economic and social impact of these diseases, especially in Central and South America, is of great concern [ 3] and has stimulated scientific investments into studying their causative agents.
Disagreements over the value of the history of philosophy for feminist theory has stimulated discussion concerning the methods and presuppositions of the study of the history of philosophy itself.
In this manner, the electronic data system has stimulated creativity concerning improvements in services and relationships among them, as well as providing an instrument for tracking those changes.
Whatever the long-liners' contribution to global pressures on commercial fish stocks, it is their effect on other creatures that has stimulated the most concern.
