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- Keyword
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- <p>Arsenic - Toxicology - Environmental aspects.</p> <p>Arsenic - Toxicology - Appalachian Region.</p> (1)
- <p>Paleontology - Eocene.</p> <p>Marsupials - Taxonomy.</p> <p>Lasers in biology.</p> (1)
- <p>Vegetation mapping - Kyrgyzstan - Kyrgyz Republic National Park.</p> <p>Kyrgyzstan.</p> (1)
- ASTER (1)
- Ala Archa (1)
Articles 1 - 3 of 3
Full-Text Articles in Physical Sciences and Mathematics
Acquiring Three-Dimensional Data From Small Mammalian Teeth : Laser Scanning Eocene Marsupials, Nicholas E. Smith
Acquiring Three-Dimensional Data From Small Mammalian Teeth : Laser Scanning Eocene Marsupials, Nicholas E. Smith
Theses, Dissertations and Capstones
Three-dimensional laser scanning is an effective method of digitization in paleontology, but has traditionally been restricted to larger specimens. The goal of this study was to develop a laser scanning technique applicable to small mammalian (< 5 mm) dentition. Modeling protocols were developed, and a morphometric error study showed the system highly accurate (percent error = 1D- 0.4%, 2D- 0.05%, 3D- 1.74%). Automation and standardization were accomplished by implementation of a multiscan platform and autosurfacing macro reducing modeling time by 60%. To highlight one morphometric application, 3D models (n=61) of three sympatric Eocene marsupials were digitized, and traditionally qualitative diagnostic characters were quantified and assessed. All but two of the 19 characters examined proved diagnostic (p < 0.05), and exploratory canonical discriminant analysis confirmed three distinct species. Incorporating type specimens revealed a familial overlap, therefore, this novel modeling technique can be employed in a full revision of early Eocene marsupials.
Satellite Image Processing For Biodiversity Conservation And Environmental Modeling In Kyrgyz Republic National Park, Galina N. Fet
Satellite Image Processing For Biodiversity Conservation And Environmental Modeling In Kyrgyz Republic National Park, Galina N. Fet
Theses, Dissertations and Capstones
There is a need for extensive surveys of living organisms at a global scale; digital data exchange and storage is an essential part of such studies. Biodiversity inventory of fungi, which play an essential role in the health of the mountainous conifer forests of a developing country – Kyrgyz Republic, was linked to the vegetation classification produced from the high-resolution satellite imagery. Terra ASTER and SRTM90 imagery was used as a base map for the ecosystem modeling of the species and habitat distribution and for the three-dimensional representation, especially valuable for the mountainous landscapes of the Ala Archa National Park. …
Arsenic Toxicity In Plhc-1 Cell Line And The Distribution Of Arsenic In Central Appalachia, Yeong Nam Jeong
Arsenic Toxicity In Plhc-1 Cell Line And The Distribution Of Arsenic In Central Appalachia, Yeong Nam Jeong
Theses, Dissertations and Capstones
Our ecosystem has geobiophysical relationships. Environmental pollution can lead to immediate consequences like organism death or lack of reproduction. It can also lead to long-range consequences through mutations and DNA damage. Fish can be affected very directly by environmental contamination in water but the study of fish is not performed well. We are developing a quantitative assay to assess DNA damage in vitro due to heavy metal contamination using a tissue culture line of Poeciliopsis lucida, the desert pupfish, which is used for other toxicology assays. To detect DNA damage, Single Cell Gel Electrophoresis (Comet Assay) is very useful. …