Photography here has now been banned, to prevent further degradation of the frescoes.

These sediments then provide an anaerobic environment which protects from further degradation.

After this initial drop, the effect reaches an equilibrium and causes little further degradation.

This led to the further degradation of the site.

The city also announced strict land-use regulations designed to protect the watershed area from further degradation.

He has instituted zoning around major antiquity sites and built visitor centers to prevent further degradation.

Sometimes not flattening the parchment in some respect will lead to the further degradation of an image.

The majority of the sculpture is now replaced with modern replicas to avoid further degradation.

Wood panel slats will also off-gas causing further degradation of the photographs.

These reactive products may also cause further degradation of the polymer chain.