Air voids are entrained in concrete for protection of constructed elements, especially highway pavements, against freeze thaw damage.
Environmentally friendly management practices in Estonia include diversified crop rotations, at least 15% of arable land (including rotational grasslands) under legumes, permanent grassland strips, protection of landscape elements, reduced applications of agrochemicals, etc.
It is not easy but it is possible and the positioning and presentation of a product can be key in allowing the protection of these elements with registered trademarks.
Ecosystem services can point to co-benefits specifically from retained natural ecosystems (providing essentially "full protection" of the elements of biodiversity in that place), and be integrated into a broader decision-support framework that also considers the partial protection (or no-protection) options in a region.
In the big picture, though, the new law's consumer protections and restoration of elements of the old Glass-Steagall legislation should make the banking system more stable and secure.
Intelligent transportation systems are advanced tools to improve and support protection of critical infrastructure elements.
Among various nonlinear optical phenomena, the optical limiting (OL) effect represents an important one for its possible exploitation in the protection of light-sensitive elements which must operate below a safety threshold of light intensity.
We therefore suggest that, despite recent advances in managing stormwater to reduce pollutant loads and peak flow rates, a more complete approach is needed, one which includes as a goal the restoration or protection of ecologically important elements of the pre-development hydrograph.
The PPS design must allow the combination of protection elements working together to assure protection rather than regarding each feature separately.
However, given the number of protection elements, this ongoing task may be difficult to deliver with the resources available.
