Sentence examples for main material groups from inspiring English sources

Fig. 6 Distribution of main material groups across production layers, EU-28 material footprint, 2011.

In this paper, we present indicators both on the aggregated level across all materials and on the level of the four main material groups.

When analyzed by main material groups, it is clearly visible that the category of industrial and construction minerals contributes the largest share to the material footprint (54 % in 2011, up from 43 % in 1995).

Figure 1 illustrates the overall development of the material footprint of the EU, disaggregated by the four main material groups (top) and by the countries and world regions, where the raw materials were extracted to directly and indirectly serve final demand in the EU (bottom).

In the final analytical step, we disaggregate the information from the layer analysis by the four main material groups of MFA. Figure 6 illustrates on which of the layers each of the four raw material groups was mainly extracted to serve the overall EU final demand for products and services in the year 2011.

Our database distinguishes 65 materials or material types which are aggregated into six main material groups: biomass, fossil energy carriers, metals, industrial minerals, construction minerals, and traded products which cannot be allocated to one of the main raw material groups.

Substantial differences were found to exist both among fatigue parameters and among Δε/2 − 2Nf relationships of materials belonging to these main metallic materials groups.

The data analysis starts on the aggregated level illustrating the overall material footprint time series of the EU followed by decompositions into the four main material categories, into sectors and product groups as well as into source countries for raw materials.

Finally, we provide a disaggregation of the material footprint layers by the main material categories, thereby analyzing the structural differences in the use of certain material groups in the economic system.

"Time is my main material," she explains.

Here the main material is metal signs.