scholarly journals Health Benefits of Geologic Materials and Geologic Processes

Earth Science ◽  
2011 ◽  
pp. 16-23
Author(s):  
Robert Finkelman
Keyword(s):  
Health Benefits ◽  
Geologic Materials ◽  
Geologic Processes

Thinking permeable matter through feminist geophilosophy: Environmental knowledge controversy and the materiality of hydrogeologic processes

2016 ◽  
Vol 35 (1) ◽  
pp. 21-37 ◽  
Author(s):  
Kai Bosworth
Keyword(s):  
South Dakota ◽  
Expert Testimony ◽  
Ecological Systems ◽  
Environmental Knowledge ◽  
Uranium Mine ◽  
Geologic Materials ◽  
Political Events ◽  
Creative Understanding ◽  
Geologic Processes

In this paper, I argue that encounters with hydrogeologic processes encourage feminists to rethink the permeable surfaces between human bodies, ecological systems, and political events. Contemporary geographical accounts of environmental knowledge controversies are insufficiently attentive to how geologic processes exceed and undermine instrumental deliberative political solutions to environmental problems. Through a mobilization of feminist geophilosophy, I argue instead that the limits of instrumental knowledge are not merely produced by uncertainty or lack of evidence, but by the inhuman forces that condition feminist thinking itself. An investigation of a controversy surrounding the permeability of underground materials near a proposed in situ recovery uranium mine in South Dakota demonstrates that subterranean spaces have the ability to heighten a sense of the openness of our bodies to geological forces. Public and expert testimony of the hydrogeology of the region creatively extended scientific accounts to draw conclusions about the meaning and force of geology for the politics of uranium extraction. This essay contributes a unique account of environmental controversies in which materiality does not become instrumental or experiential knowledge but instead produces a creative understanding of permeable geologic materials which provokes feminist thought.

A method to measure pores and fissures in geologic materials under S.E.M. by digital image processing

1978 ◽  
Vol 36 (1) ◽  
pp. 212-213
Author(s):  
L. Montoto ◽  
M. Montoto ◽  
A. Bel-Lan
Keyword(s):  
Image Processing ◽  
Optical Microscopy ◽  
Digital Image Processing ◽  
Digital Image ◽  
Digital Processing ◽  
Free Surfaces ◽  
Geologic Materials ◽  
Automatic Information ◽  
Detector Output ◽  
Rock Specimens

INTRODUCTION.- The physical properties of rock masses are greatly influenced by their internal discontinuities, like pores and fissures. So, these need to be measured as a basis for interpretation. To avoid the basic difficulties of measurement under optical microscopy and analogic image systems, the authors use S.E.M. and multiband digital image processing. In S.E.M., analog signal processing has been used to further image enhancement (1), but automatic information extraction can be achieved by simple digital processing of S.E.M. images (2). The use of multiband image would overcome difficulties such as artifacts introduced by the relative positions of sample and detector or the typicals encountered in optical microscopy.DIGITAL IMAGE PROCESSING.- The studied rock specimens were in the form of flat deformation-free surfaces observed under a Phillips SEM model 500. The SEM detector output signal was recorded in picture form in b&w negatives and digitized using a Perkin Elmer 1010 MP flat microdensitometer.

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