Results 241 to 250 of about 8,919,759 (290)

Walls of resistance: Underground memories and political violence in Colombia. [PDF]

Hist Anthropol Chur
Naef P.
europepmc   +1 more source

System earth

, 2012
Dopheide, E.J.M., van der Meer, F.D., Sliuzas, R.V., van der Veen, A., Voinov, A.   +4 more
openaire   +1 more source

Field tests: Performances of practical earthing systems under lightning impulses

International Journal of Electrical Power and Energy Systems, 2013
In this paper, experimental test set and test results on the performance of practical earthing systems under high impulse currents are presented where the earthing systems consist of 3 earthing systems configurations, 2, 3 and 4 rod electrodes ...
N Mohamad Nor, K Ramar
exaly   +2 more sources

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Plastics in the Earth system

Science, 2021
Plastic contamination of the environment is a global problem whose magnitude justifies the consideration of plastics as emergent geomaterials with chemistries not previously seen in Earth’s history. At the elemental level, plastics are predominantly carbon.
Aron Stubbins, Kara Lavender Law, Samuel E. Muñoz, Thomas S. Bianchi, Lixin Zhu   +4 more
openaire   +2 more sources

Investigations of earthing systems under steady-state and transients with FEM and experimental work

International Journal of Electrical Power and Energy Systems, 2013
In this paper, investigations on the earthing systems with computational method, Finite Element Method (FEM) and experimental work are presented.
N Mohamad Nor, M Trlep
exaly   +2 more sources

Comparison between utility sub-station and imitative earthing systems when subjected under lightning response

International Journal of Electrical Power and Energy Systems, 2012
A comparison study between the utility substation and imitative earthing systems under lightning response is investigated. The utility sub-station is a non-operational sub-station, and the imitative earthing system is the earthing system that is ...
N Mohamad Nor
exaly   +2 more sources

The earth system

Future Generation Computer Systems, 1989
Abstract The ozone hole and greenhouse warming are but examples of changes taking place in our global environment at an unprecedented rate — changes that will have profound implications for our children and grandchildren. They present to the scientists of the world a tremendous challenge: to develop an understanding of the underlying interactions ...
openaire   +2 more sources

Earth System Analysis for Sustainability

Environment: Science and Policy for Sustainable Development, 2005
Review: Earth System Analysis for Sustainability By Hans Joachim Schellnhuber, Paul J. Crutzen, Wiliam C. Clark, Martin Claussen and Herman Held (Eds.) Reviewed by Elery Hamilton-Smith Charles Sturt University, Australia Hans Joachim Schellnhuber, Paul J. Crutzen, Wiliam C.
Schellnhuber, Hans-Joachim, Crutzen, Paul J., Clark, William, Hunt, Julian   +3 more
openaire   +4 more sources

Earth System Science

Science, 2001
O ne of the great scientific challenges of the 21st century is to forecast the future of planet Earth. As human activities push atmospheric carbon dioxide (CO2) and methane concentrations far beyond anything seen for nearly half a million years (prompting the strongest statement yet from the Intergovernmental Panel on Climate Change that human ...
openaire   +2 more sources

A dynamic earth observation system

Parallel Computing, 2003
The paper presents an overview of SARA/Digital Puglia (Synthetic Aperture Radar Atlas), a remote sensing environment that shows how grid technologies and high performance computing can be efficiently used to build dynamic earth observation systems for the management of huge quantities of data coming from space missions and for their on-demand ...
ALOISIO, Giovanni, CAFARO, Massimo
openaire   +3 more sources