Results 181 to 190 of about 6,686 (202)
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Hominoid Dental Microwear: Complications in the Use of Microwear Analysis to Detect Diet
Journal of Dental Research, 1984Analysis of dental microwear on chimpanzee molars reveals much variation that reflects jaw mechanics and occlusal function rather than diet. Observed microwear pattern differences relate to variations in molar position, facet type, and overall age of the tooth. Gradients in the amounts of shear and compression generated at different points in the molar
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Microwear processes of polymer surfaces
Wear, 1993Abstract An atomic force microscope was used to scan-scratch polycarbonate (PC), polymethyl-methacrylate (PMMA) and epoxy (EP) surfaces. A diamond tip with a radius of 0.1 μm was used for scratching and for profile measurements. The sample surfaces were scan-scratched with a load of 500 nN and three different feeds (50, 25 and 12.5 nm).
R. Kaneko, E. Hamada
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Dental microwear and diet in Venezuelan primates
American Journal of Physical Anthropology, 1992AbstractRecent microwear analyses have demonstrated that wear patterns can be correlated with dietary differences. However, much of this work has been based on analyses of museum material where dates and locations of collection are not well known. In view of these difficulties, it would be desirable to compare microwear patterns for different genera ...
M F, Teaford, J A, Runestad
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Incisor microwear of Sumatran anthropoid primates
American Journal of Physical Anthropology, 1994AbstractSeveral studies have suggested that incisor microwear reflects diet and feeding adaptations of anthropoids. However, such studies have been largely qualitative, and interpretations have relied on anecdotal references to diet and tooth use reported in the socioecology literature.
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Inferences from Quantitative Analysis of Dental Microwear
Folia Primatologica, 1989Tooth microwear studies have been carried out for several reasons in the last decade. Most effort has been put into categorizing wear types that reflect dietary preferences in order to reconstruct the diet of extinct species. Several studies have shown that, for primates, carnivores and ruminants, it is possible to differentiate statistically the ...
A, Walker, M, Teaford
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Buccal dental microwear texture and catarrhine diets
American Journal of Physical Anthropology, 2017AbstractObjectivesTwo‐dimensional dental microwear analyses on occlusal and nonocclusal enamel surfaces have been widely applied to reconstruct the feeding behaviors of extant primates and to infer ecological adaptations in fossil hominins. To date, analyses of dental microwear texture, using three‐dimensional, Scale‐Sensitive Fractal Analysis ...
Andrés Aliaga‐Martínez +4 more
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Mechanics of microwear traces in tooth enamel
Acta Biomaterialia, 2015It is hypothesized that microwear traces in natural tooth enamel can be simulated and quantified using microindentation mechanics. Microcontacts associated with particulates in the oral wear medium are modeled as sharp indenters with fixed semi-apical angle.
Oscar, Borrero-Lopez +3 more
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A molar microwear texture analysis of pitheciid primates
American Journal of Primatology, 2017Dental microwear textures have been examined for a broad range of extant primates to assess their efficacy for reconstructing diets of fossil species. To date though, no dental microwear texture data have been published for pitheciid molars, despite reported variation in degree of sclerocarpy and, by extension, the fracture properties of foods these ...
Anna J. Ragni +2 more
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Dental microwear and dental function
Evolutionary Anthropology: Issues, News, and Reviews, 1994AbstractInvestigators have used many techniques to understand diet and tooth use in prehistoric species. A promising new addition to the analytical arsenal is dental microwear analysis—the study of microscopic wear patterns on teeth. On‐going work is proceeding on a number of fronts.
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Lithic microwear analysis in archeology
Evolutionary Anthropology: Issues, News, and Reviews, 1992AbstractStone tools are the most durable and ubiquitous residue of prehistoric hominid activity. For this reason, archeologists attempt to learn as much as possible about hominid behavior from the analysis of lithic artifacts. Lithic microwear analysis reconstructs aspects of stone‐tool use from patterned variation in the traces of microscopic wear on ...
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