Zobrazeno 1 - 10
of 112
pro vyhledávání: '"John N. Porter"'
Autor:
Anupam K. Misra, Sonia J. Rowley, Jie Zhou, Tayro E. Acosta-Maeda, Luis Dasilveira, Gregory Ravizza, Kenta Ohtaki, Tina M. Weatherby, A. Zachary Trimble, Patrick Boll, John N. Porter, Christopher P. McKay
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-8 (2022)
Abstract The “Search for life”, which may be extinct or extant on other planetary bodies is one of the major goals of NASA planetary exploration missions. Finding such evidence of biological residue in a vast planetary landscape is an enormous ch
Externí odkaz:
https://doaj.org/article/cf6f5f14bde2478197ab2c8e7bb4d94d
Autor:
Macey W. Sandford, Patrick Boll, Luis Dasilveira, M. Nurul Abedin, Tayro E. Acosta-Maeda, A Zachary Trimble, Christopher P. McKay, Sonia J. Rowley, Jie Zhou, Miles J. Egan, Anupam K. Misra, John N. Porter
Publikováno v:
Applied spectroscopy. 75(11)
We have developed a compact instrument called the “COmpact COlor BIofinder”, or CoCoBi, for the standoff detection of biological materials and organics with polyaromatic hydrocarbons (PAHs) using a nondestructive approach in a wide area. The CoCo
Autor:
Shiv K. Sharma, John N. Porter, Anupam K. Misra, Przemyslaw Dera, G. Berlanga, Tayro E. Acosta-Maeda, G. Jeffrey Taylor, Hannah Shelton
Publikováno v:
Applied optics. 58(32)
We report the remote Raman spectra of natural igneous, metamorphic, and sedimentary rock samples at a standoff distance of 5 m. High-quality remote Raman spectra of unprepared rocks are necessary for accurate and realistic analysis of future Raman me
Autor:
Anupam K. Misra, Tayro E. Acosta-Maeda, Macey W. Sandford, John N. Porter, Tamra Oyama, Jie Zhou, Miles J. Egan
Publikováno v:
Applied spectroscopy. 74(2)
The detection and identification of materials from a distance is highly desirable for applications where accessibility is limited or there are safety concerns. Raman spectroscopy can be performed remotely and provides a very high level of confidence
Publikováno v:
Bulletin of Volcanology. 81
Remote measurements of sulfur dioxide (SO2) path-concentration and emission rate (mass flux), released by passive volcanic degassing, are a key diagnostic of volcanic behavior. SO2 gas concentrations are also important for public health. Despite the
Publikováno v:
Applied Spectroscopy. 71:1025-1038
We determined Raman cross-sections of various organic liquids and inorganic polyatomic ions in aqueous solutions with a 532 nm pulsed laser using remote Raman systems developed at the University of Hawaii. Using a calibrated integrating sphere as a l
Publikováno v:
Lidar Remote Sensing for Environmental Monitoring XVI.
Publikováno v:
Bulletin of Volcanology. 79
Quantifying sulfur dioxide (SO2) in volcanic plumes is important for eruption predictions and public health. Ground-based remote sensing of spectral radiance of plumes contains information on the path-concentration of SO2. However, reliable inversion
Publikováno v:
European Journal of Mineralogy. 25:715-720
A S canning St andoff R aman S pectroscopy (SSTRS) system has been developed to map out the spatial distributions of selected minerals at long distances (10–100 m). The SSTRS is based on a standoff Raman system, which is mounted inside a custom pan
Autor:
John N. Porter, Mark C. Wood, Robert Wright, Eric Pilger, Paul G. Lucey, Andrea Gabrieli, Harold Garbeil
Publikováno v:
Bulletin of Volcanology. 78
The ability to image and quantify SO2 path-concentrations in volcanic plumes, either by day or by night, is beneficial to volcanologists. Gas emission rates are affected by the chemical equilibria in rising magmas and a better understanding of this r