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Arc converter

Known as: Poulsen arc, Poulsen Arc Transmitter, Poulsen 
The arc converter, sometimes called the arc transmitter, or Poulsen arc after Danish engineer Valdemar Poulsen who invented it in 1903, was a variety… Expand
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Highly Cited
2013
Highly Cited
2013
Aim Large trees (d.b.h. 70 cm) store large amounts of biomass. Several studies suggest that large trees may be vulnerable to… Expand
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Highly Cited
2012
Highly Cited
2012
The research on teachers ’ beliefs, to our knowledge, spans more than 57 years ( Oliver, 1953 ) and runs the gamut of research… Expand
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Highly Cited
2009
Highly Cited
2009
The soil gas diffusion coefficient ( D p ) and air permeability ( k a ) and their dependency on soil air content (e) control gas… Expand
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Highly Cited
2009
Highly Cited
2009
[1] Benthic foraminiferal oxygen isotopic (d 18 O) and carbon isotopic (d 13 C) trends, constructed from compilations of data… Expand
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2004
2004
Stand structure including spatial patterns was studied in northern hardwood and mixed forest types in the 2000-ha old-growth Big… Expand
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Highly Cited
2001
Highly Cited
2001
The Skeptical Environmentalist challenges widely held beliefs that the environmental situation is getting worse and worse. The… Expand
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Highly Cited
2001
Highly Cited
2001
AbstractOrogenic gold deposits have formed over more than 3 billion years of Earth’s history, episodically during the… Expand
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Highly Cited
2000
Highly Cited
2000
We find that institutional ownership concentration is positively related to the pay-for-performance sensitivity of executive… Expand
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Highly Cited
1994
Highly Cited
1994
An important implementation decision in polymorphically typed functional programming language is whether to represent data in… Expand
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Highly Cited
1975
Highly Cited
1975
Salinity and sodicity are soil conditions that occur mainly in arid and semiarid regions. Rainfall leaches salts out of soils in… Expand
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