Sentence examples for earth extraction from inspiring English sources

A new multiple-model predictive control scheme is proposed for the control of the component content in the rare earth extraction process.

Keystone South is perpetuating scorched earth extraction of tar sludge in Canada, where First Nations and the Métis are suffering what has been termed a "slow industrial genocide," with many people dying from cancer caused by industrial heavy metal contamination of traditional foods.

Anyone who has tried to walk over a slope following a horizontal line or a line with a low gradient of from 3 to 5percentt has soon realized that there is always a tendency to climb toward the top of the slope describing a line where the gradient easily rises to20percentnt and more: this gradient nearly always exceeds the maximum acceptable on an earth extraction road.

For the bare-earth extraction, we used hierarchical robust filtering algorithm and a parameterization with three sequential filtering steps.

This paper presents a novel gradient-constrained morphological filtering algorithm for bare-earth extraction from light detection and ranging (LiDAR) data.

Such elements come with respective 'stories of stuff', which connect the ostensibly clean digital world to the dirty business of rare-earth extraction, rife with human and environmental exploitation.

And, until recently, China has not been very squeamish about the consequences of rare-earth extraction.

"The separation of rare earths from each other is the key challenge in making rare earth metals extraction more sustainable and economically feasible," Nakanishi says.

Multiple local linear models with two-input and two-output of the rare earth countercurrent extraction process are constructed, each of which is established under an operation condition.

Considering that the on-line measurement and automatic control of element component content (ECC) are difficult to perform in rare earth cascade extraction process, the ECC distribution profile is dynamically regulated at all stages to assess the effect of product purity control.

That is because there is a stronger environmental argument for restricting the supply of rare earths, the extraction of which produces toxic chemicals.China also has other means of retaining control of the market besides export quotas.