Sentence examples for main stratum from inspiring English sources

The result was the opening of Felling Colliery in 1779, working on the High Main stratum at a depth of 125 fathoms.

After dividing the city into these three main strata, we selected clinics at random as clusters.

A stratified two stage cluster sampling was used to select the study participants, urban versus rural as the main strata.

The aim of this study is to investigate the influence of ceramide head group architecture and free fatty acid (another main class of stratum corneum lipids) or protein (keratin), on the lamellar organization of the ceramide auto-associated in model films mimicking lipid organization within the stratum corneum.

The main soil stratum of the site consists of a groundwater level, which was observed at 3.5 m below the surface level.

They also incorporate species-specific traits, particularly main foraging stratum.

In this study, we established a main roof strata model with loads in accordance with the theory of key strata to investigate the stability of the overburden in solid dense filling mining.

The urban and rural areas were identified as the main sampling strata with selection done in two stages.

We also deduced the stability mechanics criterion of the main roof strata based on tensile yield criterion.

We analyzed the stress distribution law of the main roof strata based on elastic thin plate theory.

The results show that the position of the long side midpoint of the main roof strata failed more easily because of tensile yield, indicating that this position is the area where failure is likely to occur more easily.