The metal pollution must pass through the magnetic field.

Figure 4 | Canonical analysis evaluating the lichen susceptibility to metal pollution

If the plants are left to die in situ, the contaminants will return to the soil.

Low wear rate and little metallic pollution: its metal wear is only 5~10g/t.

The metal pollution must pass through the magnetic field.

The filler may be an inorganic metal oxide, metal hydroxide, metal carbonate, metal nitride, metal carbide or metal boride.

The invention relates to a metal roof plate for cleaning and maintaining the clean state of building roofs, in particular from plant growth or environmental pollution.

Figure 4 | Canonical analysis evaluating the lichen susceptibility to metal pollution

The inorganic filler is at least one selected from a metal hydroxide, a metal oxide, a metal carbonate and a metal powder.

The metal support is preferably a porous metal structure, such as a metal mesh or foam.

A metal trace connects a first metal bar and a second metal bar.

A metal trace connects a first metal bar and a second metal bar.

The metal or metal alloy surface generally comprises a metal oxide layer.

It is preferable that the metallic element of the metal rosinate be of the same kind as the metallic element of the fatty acid metal salt.

The protective layer can comprise niobium, or a metal carbide, metal boride, metal nitride, or metal silicide.