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Full-Text Articles in Life Sciences
Lion-Tailed Macaques (Macaca Silenus) In A Disturbed Forest Fragment: Activity Patterns And Time Budget, Shaily Menon, Frank Poirier
Lion-Tailed Macaques (Macaca Silenus) In A Disturbed Forest Fragment: Activity Patterns And Time Budget, Shaily Menon, Frank Poirier
Shaily Menon
We describe the activity patterns and time budget of a feral group of lion-tailed macaques that were confined to a disturbed forest fragment of 65 ha and compare the results with those obtained for groups in protected forests. The degraded nature of the study site was reflected in low tree densities, low specific diversity, gaps in the girth distribution of trees, and frequent disturbance by humans. The study group of 43 subjects was twice as large as lion-tailed macaque groups in protected habitats. They spent the most time ranging (34.0%), followed by foraging (23.7%), feeding (17.9%), resting (16.0%), and other …
In-Situ Imaging Of Ionic Crystal Dissolution Using An Integrated Electrochemical/Afm Probe, Julie V. Macpherson, Patrick R. Unwin, Andrew C. Hillier, Allen J. Bard
In-Situ Imaging Of Ionic Crystal Dissolution Using An Integrated Electrochemical/Afm Probe, Julie V. Macpherson, Patrick R. Unwin, Andrew C. Hillier, Allen J. Bard
Andrew C. Hillier
The kinetics and mechanism controlling dissolution from the (100) cleavage face of potassium bromide single crystals in acetonitrile solutions have been identified using a novel integrated electrochemical/AFM probe and a scanning electrochemical microscope (SECM). With both techniques, dissolution is induced by perturbing the dynamic dissolution/growth equilibrium at the crystal/solution interface through the electrochemical oxidation of bromide ions. SECM measurements demonstrate that the dissolution reaction is diffusion-limited under the experimental conditions, suggesting that the surface reaction is characterized by a rate constant in excess of 5 cm s-1 (assuming a first-order dissolution process). The topography of the dissolving surface has been …
Brain Activation Modulated By Sentence Comprehension, Marcel Adam Just, Patricia A. Carpenter, Timothy A. Keller, William F. Eddy, Keith R. Thulborn
Brain Activation Modulated By Sentence Comprehension, Marcel Adam Just, Patricia A. Carpenter, Timothy A. Keller, William F. Eddy, Keith R. Thulborn
Marcel Adam Just
No abstract provided.
Measurement Of Double-Layer Forces At The Electrode/Electrolyte Interface Using The Atomic Force Microscope: Potential And Anion Dependent Interactions, Andrew C. Hillier, Sunghyun Kim, Allen J. Bard
Measurement Of Double-Layer Forces At The Electrode/Electrolyte Interface Using The Atomic Force Microscope: Potential And Anion Dependent Interactions, Andrew C. Hillier, Sunghyun Kim, Allen J. Bard
Andrew C. Hillier
The forces between a silica probe and silica and gold substrates were measured with an atomic force microscope in the presence of a series of alkali-halide electrolyte solutions. The interaction between two silica surfaces was repulsive and could be accurately predicted by Derjaguin-Landau-Verwey-Overbeek theory. The silica surface was negatively charged at a pH of 5.5 and the effective surface potential increased in magnitude with decreasing electrolyte concentration. In contrast, the force between the silica probe and a gold substrate was attractive at open circuit. This interaction was a strong function of the potential applied to the gold and the nature …