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Full-Text Articles in Life Sciences
Alternative Futures 2030: Ogden Valley, Louis Alan Hurst
Alternative Futures 2030: Ogden Valley, Louis Alan Hurst
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
Ogden Valley is a high mountain community located in the northern Wasatch Mountain Range (Figure 1), and is located entirely within Weber County, Utah. Three communities sit within the valley: Huntsville, Eden, and Liberty. Early Mormon settlers established these communities in the mid-1800s; however, only the town of Huntsville is incorporated. The rural valley is in close proximity to the densely populated Wasatch Front, in particular, Ogden City. Ogden Valley is approximately 331 square miles and has an elevation that ranges between 4400 and 9700 feet. This wide range in elevation provides a diverse environment for humans, wildlife , and …
High Precision, High Spatial Resolution Analysis Of Sulfur Isotopes By Laser Combustion Of Natural Sulfide Minerals, S. P. Kelley, A. E. Fallick, P. Mcconville, A. J. Boyce
High Precision, High Spatial Resolution Analysis Of Sulfur Isotopes By Laser Combustion Of Natural Sulfide Minerals, S. P. Kelley, A. E. Fallick, P. Mcconville, A. J. Boyce
Scanning Microscopy
Laser induced combustion provides a powerful new technique for sulfur isotope measurements in natural sulfides. A high power continuous laser, focused through a modified microscope system onto a sulfide mineral target, produces highly localized heating. The laser beam is focused to a spot 25 μm in diameter at the sample surface. In the presence of low pressure oxygen, temperatures at the centre of the spot are sufficiently high to produce localized oxidation. Resultant SO2 is transferred to a gas source isotope ratio mass spectrometer, where the 𝛿34S can be measured to a precision better than 0.25‰. Sulfur …
Micro-Pixe (Particle-Induced X-Ray Emission Analysis) Applications In Minerals Research, S. H. Sie, C. G. Ryan, G. F. Suter
Micro-Pixe (Particle-Induced X-Ray Emission Analysis) Applications In Minerals Research, S. H. Sie, C. G. Ryan, G. F. Suter
Scanning Microscopy
The versatility of the PIXE method with microbeams of protons as a non-destructive, in-situ probe for trace element analysis in the geosciences has been demonstrated in an ever increasing number of cases. While in most applications the method can be considered as derivative or as an extension of electron microprobe methodology, features unique to the proton microprobe enable new approaches to hitherto intractable problems of analysis. An appropriate niche has been established in igneous mineralogy and petrology, with important implications both in the basic geosciences as well as mineral industry applications, particularly in the diamond exploration industry. This paper reviews …
Aspen Ecosystem Properties In The Upper Great Lakes, David H. Alban, D.A. Perala, M.F. Jurgensen, M.E. Ostry, J.R. Probst
Aspen Ecosystem Properties In The Upper Great Lakes, David H. Alban, D.A. Perala, M.F. Jurgensen, M.E. Ostry, J.R. Probst
Aspen Bibliography
No abstract provided.
Microcharacterization Of Fluid Inclusions In Minerals By Raman Microprobe, J. C. Touray, C. Beny-Bassez, J. Dubessy, N. Guilhaumou
Microcharacterization Of Fluid Inclusions In Minerals By Raman Microprobe, J. C. Touray, C. Beny-Bassez, J. Dubessy, N. Guilhaumou
Scanning Electron Microscopy
Fluids trapped in inclusions in minerals are micro-amounts of ore-forming media composed of water, dissolved salts, gases and sometimes liquefied gases, liquid, hydrocarbons and solids. The aim of this paper is to summarize the contribution of the Raman scattering microspectrometry to the knowledge of fluid inclusions. After a review of the composition of fluid inclusions and a short presentation of microthermometrical investigations, a description of the Raman microprobe is given. Applications are reviewed; identification of ionic species dissolved in aqueous phase, characterization of gases of C-O-H-N-S system, identification of solids and non aqueous liquids. The complementary characteristics of Raman microanalysis …