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Review Of: Pearls Of Discrete Mathematics By Martin Erickson, Robert A. Beezer
Review Of: Pearls Of Discrete Mathematics By Martin Erickson, Robert A. Beezer
All Faculty Scholarship
This article reviews the book "Pearls of Discrete Mathematics," by Martin Erickson.
Termites Create Spatial Structure And Govern Ecosystem Function By Affecting N-2 Fixation In An East African Savanna, Kena Fox-Dobbs, Daniel F. Doak, Alison K. Brody, Todd M. Palmer
Termites Create Spatial Structure And Govern Ecosystem Function By Affecting N-2 Fixation In An East African Savanna, Kena Fox-Dobbs, Daniel F. Doak, Alison K. Brody, Todd M. Palmer
All Faculty Scholarship
The mechanisms by which even the clearest of keystone or dominant species exert community-wide effects are only partially understood in most ecosystems. This is especially true when a species or guild influences community-wide interactions via changes in the abiotic landscape. Using stable isotope analyses, we show that subterranean termites in an East African savanna strongly influence a key ecosystem process: atmospheric nitrogen fixation by a monodominant tree species and its bacterial symbionts. Specifically, we applied the N-15 natural abundance method in combination with other biogeochemical analyses to assess levels of nitrogen fixation by Acacia drepanolobium and its effects on co-occurring …
Scanning Electron Microscopy And Molecular Dynamics Of Surfaces Of Growing And Ablating Hexagonal Ice Crystals, Steven Neshyba, Pavel Jungwirth, Martina Roeselova, Erin Nugent
Scanning Electron Microscopy And Molecular Dynamics Of Surfaces Of Growing And Ablating Hexagonal Ice Crystals, Steven Neshyba, Pavel Jungwirth, Martina Roeselova, Erin Nugent
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We present the first clearly resolved observations of surfaces of growing and ablating hexagonal ice crystals using variable-pressure scanning electron microscopy. The ice surface develops trans-prismatic strands, separated from one another by distances of 5–10 ?m. The strands are present at a wide range of supersaturations, but are most pronounced at temperatures near the frost point. Pyramidal facets consistent with Miller-Bravais indices of 1011, and possibly also 2021, are associated with ice growth under these conditions. A molecular-dynamics model of a free-standing ice Ih nanocolumn containing 8400 water molecules does not develop trans-prismatic strands, suggesting these features originate at …
Review Of: Transnational Actors In Central And East European Transitions By Mitchell A. Orenstein, Stephen Bloom, And Nicole Lindstrom, Patrick H. O'Neil
Review Of: Transnational Actors In Central And East European Transitions By Mitchell A. Orenstein, Stephen Bloom, And Nicole Lindstrom, Patrick H. O'Neil
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The article reviews the book "Transnational Actors in Central and East European Transitions," edited by Mitchell A. Orenstein, Stephen Bloom, and Nicole Lindstrom.