scholarly journals Marked compositional changes in harvestmen assemblages in Amazonian forest islands induced by a mega dam

2019 ◽  
Vol 13 (5) ◽  
pp. 432-444 ◽  
Author(s):  
Ana Lúcia Tourinho ◽  
Maíra Benchimol ◽  
Willians Porto ◽  
Carlos A. Peres ◽  
Danielle Storck‐Tonon
Keyword(s):  
Amazonian Forest ◽  
Compositional Changes ◽  
Forest Islands

scholarly journals Drivers of leafcutter ant populations and their inter‐trophic relationships in Amazonian forest islands

Ecosphere ◽  
2021 ◽  
Vol 12 (5) ◽  
Author(s):  
Ana Filipa Palmeirim ◽  
Maíra Benchimol ◽  
Inara R. Leal ◽  
Carlos A. Peres
Keyword(s):  
Trophic Relationships ◽  
Amazonian Forest ◽  
Forest Islands

scholarly journals Non-random lizard extinctions in land-bridge Amazonian forest islands after 28 years of isolation

2017 ◽  
Vol 214 ◽  
pp. 55-65 ◽  
Author(s):  
Ana Filipa Palmeirim ◽  
Marcus Vinícius Vieira ◽  
Carlos A. Peres
Keyword(s):  
Land Bridge ◽  
Amazonian Forest ◽  
Forest Islands

scholarly journals Small mammal responses to Amazonian forest islands are modulated by their forest dependence

Oecologia ◽  
2018 ◽  
Vol 187 (1) ◽  
pp. 191-204 ◽  
Author(s):  
Ana Filipa Palmeirim ◽  
Maíra Benchimol ◽  
Marcus Vinícius Vieira ◽  
Carlos A. Peres
Keyword(s):  
Small Mammal ◽  
Amazonian Forest ◽  
Forest Dependence ◽  
Forest Islands

HREM observations of internetallic alloy formation in Pt-Sn thin films

1992 ◽  
Vol 50 (1) ◽  
pp. 52-53
Author(s):  
D.C. Dufner
Keyword(s):  
Thin Films ◽  
Cross Sections ◽  
Carbon Films ◽  
Solid State Reactions ◽  
Alloy Formation ◽  
Reaction Behavior ◽  
Interdiffusion Process ◽  
Compositional Changes ◽  
General Goal ◽  
Film Method

The general goal of this research is to clarify mechanisms of solid state reactions at the atomic level as a step in the rationalization of macroscopic reaction behavior in solids. A study of intermetallic alloy formation resulting from interdiffusion of metals in thin films can be made by HREM. In this work, reactions between Pt and Sn in thin films are studied to elucidate mechanisms for structural and compositional changes during the interdiffusion process.Thin films of Pt and Sn used in this study were prepared by the two-film method introduced by Shiojiri. Few hundred angstroms of Pt were vacuum-deposited onto holey carbon films mounted on TEM grids. Sn films with an average thickness of 200Å were created by evaporation at rates of 15-30 Å/sec onto air-cleaved KBr substrates. The Sn films were wet-stripped and collected on the holey Pt grids. Figure 1 shows a cross-section schematic of a Pt-Sn couple. While this two-film arrangement did not allow observations of the actual reaction interface, microtomy was used to produce cross-sections.

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