So, for women at least, Twitter is both a cause for great celebration and some niggling elements of concern.
"The large number of weapons and irregular combatants circulating in this region is one of the principal elements of concern," the report warned.
They are to be seen not only as possible explanatory factors, but also as additional elements of concern.
Uranium is one of the most important elements of concern with regard to the safe storage and disposal of nuclear waste.
Refuse or spoils generated during either underground or surface coal mining can be sources of sulfate and chloride discharges with trace elements of concern.
However, the more complex nature of products based on living cells capable of reproduction can introduce elements of concern that have not been typical for other pharmaceutical products.
This facility has been designed around the idea that elements of concern (e.g., U, As, Ni, Se, Mo) will be controlled through equilibrium with precipitants.
Whereas the rationale and procedures involved in risk assessment are beyond the scope of this chapter, some elements of concern to the toxicologic pathologist are germane, namely interspecies extrapolation, and dose extrapolation.
Evidence gathered from these assessments, including toxic unit (TU) calculations for the elements of concern, suggests that V was the likely cause of toxicity of the deep lysimeter leachate, whereas in the shallow lysimeter leachate both Ni and V could be responsible for the observed toxicity.
The long-lived radionuclide 79Se is one of the elements of concern for the safe storage of high-level nuclear waste, since clay minerals in engineered barriers and natural aquifer sediments strongly adsorb cationic species, but to lesser extent anions like selenate (SeVIO42−) and selenite (SeIVO32−).
