The Ultimate Limitation of Mineral Resources

Ultimate limitation of the SQUID magnetometer

The Superconducting QUantum Interference Device is used to detect weak biomagnetic signals since in the early seventies. In that time the measurement was based on point contact rf SQUIDs operated at 20 MHz, with to a flux noise of the order of 10-4 Φ 0/ √Hz . After finding methods to fabricate reliable thin-film devices, the dc SQUIDs started gradually replace the rf SQUIDs. [1] The dc SQUID wi...

Mineral resources and geo-engineering

Metals used in everyday life are produced from ores occurring in the Earth’s crust. Geological processes are known to concentrate minerals to form ores of economic value. Mineral processing engineers concentrate these ores by mechanical and physico-chemical methods while the extractive metallurgist extracts the metals by chemical means.

histological evaluation of the effect of three medicaments; trichloracetic acid, formocresol and mineral trioxide aggregate on pulpotomized teeth of dogs

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Resourceship: An Austrian theory of mineral resources

Economists inside and outside of the Austrian-school tradition have formulated a subjectivist theory of mineral resources. While von Mises (1940) presented a rudimentary theory, institutionalist Zimmermann (1933 and after) provided an indepth mind-centered approach distinct from the objective, neoclassical theory for minerals developed by Jevons (1865, 1866), Gray (1913), and Hotelling (1931). ...

Global Mineral Resources , Occurrence and Distribution