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The Effect of the Electromagnetic Vibration on the Microstructure, Segregation, and Mechanical Properties of As-Cast AZ80 Magnesium Alloy Billet
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The effect of the electromagnetic vibration on the properties of 300-mm-diameter AZ80 Mg billets was investigated. The experiments were performed both in the absence and in the presence of electromagnetic vibrating force fields, which were induced by an interaction of variable and stationary magnetic fields. In conventional direct-chill (DC) casting, the AZ80 billet exhibited large dendritic grains with severe segregations of Al and Zn. Applying the electromagnetic vibration during the castin...
Related newspaper, magazine, and journal articles from HighBeam Research
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Is Earth's faltering magnetic field turning south?
Deseret News (Salt Lake City)
; SAN FRANCISCO -- In the recent movie "The Core," Earth's molten core stops spinning, with dire effects on the magnetic field that protects the planet from energy-charged particles from the sun. People with pacemakers fall dead in the street; the Golden Gate Bridge collapses. Scientists have known
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Migrating turtles use earth's magnetic field as map and compass.(News)
The Independent (London, England)
; Byline: Steve Connor Science Editor THE MYSTERY of the migrating sea turtle may have been solved. Scientists have shown that the marine reptile can use the earth's magnetic field as both a compass and a map. An experiment by marine biologists working off the coast of Florida has demonstrated the
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MARS GLOBAL SURVEYOR DETECTS MARTIAN MAGNETIC FIELD AS AEROBRAKING BEGINS
Regulatory Intelligence Data
; 00-00-0000 Douglas Isbell Headquarters, Washington, DC. (Phone: 202/358-1753) Diane Ainsworth Jet Propulsion Laboratory, Pasadena, CA (Phone: 818/354-5011) Bill Steigerwald Goddard Space Flight Center, Greenbelt, MD (Phone: 301/286-7277) RELEASE: 97-204 Sept. 17, 1997 MARS GLOBAL SURVEYOR DETECTS
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Earth's heart beats with a magnetic rhythm. (rhythm of strength of magnetic field)
Science News
; Despite what you might have learned in fifth grade, compass needles don't always point north. Every several hundred thousand years, the magnetic field emanating from inside the planet does an about-face, swapping North and South Poles for easons that geoscientists have yet to unravel. Researchers
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ODP Cores Provide Insight on Magnetic Field Reversal
Sea Technology
; The time is takes for the Earth's magnetic field to reverse polarity is approximately 7,000 years, but the time it takes for the reversal to occur is shorter at low latitudes than high, a geologist concluded. Brad Clement of Florida International University believes that these results are a major
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Solar magnetism: Memories are made of this.(research on solar magnetic field)
Science News
; The more things change, the more they stay the same. That old adage accurately describes the behavior of the solar magnetic field revealed by a new study. Waxing and waning, even flipping direction, the sun's magnetic field undergoes dramatic upheavals yet always returns to its original shape and
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Tracing corrosion's magnetic field.
Science News
; Tracing Corrosion's Magnetic Field The ravages of corrosion are often clearly visible, whether in the reddish brown flakes clinging to rusted iron or in the mottled green appearance of weathered copper. But the tiny, invisible magnetic fields accompanying the electric currents generated by
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Magnetic field faces change in direction
The Milwaukee Journal Sentinel
; Magnetic field faces change in direction By GLENNDA CHUI Knight Ridder Newspapers Monday, December 29, 2003 San Jose, Calif. -- It sounds like something out of a bad science fiction movie: Compass needles go haywire, cancer rates rise, new ozone holes pop up all over the globe and a plague of
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SPACECRAFT DETECTS MARS MAGNETIC FIELD.(Local)
Rocky Mountain News (Denver, CO)
; Byline: Joseph B. Verrengia Rocky Mountain News Science Writer Mars Global Surveyor has detected a weak magnetic field around the red planet, the first indication of a magnetic ...
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Homing in on animal magnetism. (earth's magnetic field for long migratory flights of birds)
Science News
; Homing in on animal magnetism If Hansel and Gretel had been written by a salamander, there would have been no story at all. Bread crumbs or no, the little newts would have followed the variations in the earth's magnetic field homeward poor wicked witch. That, at least, might be the scenario
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