The Experts below are selected from a list of 288 Experts worldwide ranked by ideXlab platform
Desiree L. Plata - One of the best experts on this subject based on the ideXlab platform.
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Flexible, Mechanically Durable Aerogel Composites for Oil Capture and Recovery
ACS Applied Materials and Interfaces, 2016Co-Authors: Osman Karatum, Justin S. Griffin, Stephen A. Steiner, Wenbo Shi, Desiree L. PlataAbstract:More than 30 years separate the two largest oil spills in North American History (the Ixtoc I and Macondo well blowouts), yet the responses to both disasters were nearly identical in spite of advanced material innovation during the same time period. Novel, mechanically durable sorbents could enable (a) sorbent use in the open ocean, (b) automated deployment to minimize workforce exposure to toxic chemicals, and (c) mechanical recovery of spilled oils. Here, we explore the use of two mechanically durable, low-density (0.1?0.2 g cm?3), highly porous (85?99% porosity), hydrophobic (water contact angles >120°), flexible aerogel composite blankets as sorbent materials for automated oil capture and recovery: Cabot Thermal Wrap (TW) and Aspen Aerogels Spaceloft (SL). Uptake of crude oils (Iraq and Sweet Bryan Mound oils) was 8.0 ± 0.1 and 6.5 ± 0.3 g g?1 for SL and 14.0 ± 0.1 and 12.2 ± 0.1 g g?1 for TW, respectively, nearly twice as high as similar polyurethane- and polypropylene-based devices. Compound-specific uptake experiments and discrimination against water uptake suggested an adsorption-influenced sorption mechanism. Consistent with that mechanism, chemical extraction oil recoveries were 95 ± 2 (SL) and 90 ± 2% (TW), but this is an undesirable extraction route in decentralized oil cleanup efforts. In contrast, mechanical extraction routes are favorable, and a modest compression force (38 N) yielded 44.7 ± 0.5% initially to 42.0 ± 0.4% over 10 reuse cycles for SL and initially 55.0 ± 0.1% for TW, degrading to 30.0 ± 0.2% by the end of 10 cycles. The mechanical integrity of SL deteriorated substantially (800 ± 200 to 80 ± 30 kPa), whereas TW was more robust (380 ± 80 to 700 ± 100 kPa) over 10 uptake-and-compression extraction cycles.
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Flexible, Mechanically Durable Aerogel Composites for Oil Capture and Recovery
ACS Applied Materials & Interfaces, 2015Co-Authors: Osman Karatum, Justin S. Griffin, Stephen A. Steiner, Desiree L. PlataAbstract:More than 30 years separate the two largest oil spills in North American History (the Ixtoc I and Macondo well blowouts), yet the responses to both disasters were nearly identical in spite of advanced material innovation during the same time period. Novel, mechanically durable sorbents could enable (a) sorbent use in the open ocean, (b) automated deployment to minimize workforce exposure to toxic chemicals, and (c) mechanical recovery of spilled oils. Here, we explore the use of two mechanically durable, low-density (0.1–0.2 g cm–3), highly porous (85–99% porosity), hydrophobic (water contact angles >120°), flexible aerogel composite blankets as sorbent materials for automated oil capture and recovery: Cabot Thermal Wrap (TW) and Aspen Aerogels Spaceloft (SL). Uptake of crude oils (Iraq and Sweet Bryan Mound oils) was 8.0 ± 0.1 and 6.5 ± 0.3 g g–1 for SL and 14.0 ± 0.1 and 12.2 ± 0.1 g g–1 for TW, respectively, nearly twice as high as similar polyurethane- and polypropylene-based devices. Compound-specifi...
Osman Karatum - One of the best experts on this subject based on the ideXlab platform.
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Flexible, Mechanically Durable Aerogel Composites for Oil Capture and Recovery
ACS Applied Materials and Interfaces, 2016Co-Authors: Osman Karatum, Justin S. Griffin, Stephen A. Steiner, Wenbo Shi, Desiree L. PlataAbstract:More than 30 years separate the two largest oil spills in North American History (the Ixtoc I and Macondo well blowouts), yet the responses to both disasters were nearly identical in spite of advanced material innovation during the same time period. Novel, mechanically durable sorbents could enable (a) sorbent use in the open ocean, (b) automated deployment to minimize workforce exposure to toxic chemicals, and (c) mechanical recovery of spilled oils. Here, we explore the use of two mechanically durable, low-density (0.1?0.2 g cm?3), highly porous (85?99% porosity), hydrophobic (water contact angles >120°), flexible aerogel composite blankets as sorbent materials for automated oil capture and recovery: Cabot Thermal Wrap (TW) and Aspen Aerogels Spaceloft (SL). Uptake of crude oils (Iraq and Sweet Bryan Mound oils) was 8.0 ± 0.1 and 6.5 ± 0.3 g g?1 for SL and 14.0 ± 0.1 and 12.2 ± 0.1 g g?1 for TW, respectively, nearly twice as high as similar polyurethane- and polypropylene-based devices. Compound-specific uptake experiments and discrimination against water uptake suggested an adsorption-influenced sorption mechanism. Consistent with that mechanism, chemical extraction oil recoveries were 95 ± 2 (SL) and 90 ± 2% (TW), but this is an undesirable extraction route in decentralized oil cleanup efforts. In contrast, mechanical extraction routes are favorable, and a modest compression force (38 N) yielded 44.7 ± 0.5% initially to 42.0 ± 0.4% over 10 reuse cycles for SL and initially 55.0 ± 0.1% for TW, degrading to 30.0 ± 0.2% by the end of 10 cycles. The mechanical integrity of SL deteriorated substantially (800 ± 200 to 80 ± 30 kPa), whereas TW was more robust (380 ± 80 to 700 ± 100 kPa) over 10 uptake-and-compression extraction cycles.
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Flexible, Mechanically Durable Aerogel Composites for Oil Capture and Recovery
ACS Applied Materials & Interfaces, 2015Co-Authors: Osman Karatum, Justin S. Griffin, Stephen A. Steiner, Desiree L. PlataAbstract:More than 30 years separate the two largest oil spills in North American History (the Ixtoc I and Macondo well blowouts), yet the responses to both disasters were nearly identical in spite of advanced material innovation during the same time period. Novel, mechanically durable sorbents could enable (a) sorbent use in the open ocean, (b) automated deployment to minimize workforce exposure to toxic chemicals, and (c) mechanical recovery of spilled oils. Here, we explore the use of two mechanically durable, low-density (0.1–0.2 g cm–3), highly porous (85–99% porosity), hydrophobic (water contact angles >120°), flexible aerogel composite blankets as sorbent materials for automated oil capture and recovery: Cabot Thermal Wrap (TW) and Aspen Aerogels Spaceloft (SL). Uptake of crude oils (Iraq and Sweet Bryan Mound oils) was 8.0 ± 0.1 and 6.5 ± 0.3 g g–1 for SL and 14.0 ± 0.1 and 12.2 ± 0.1 g g–1 for TW, respectively, nearly twice as high as similar polyurethane- and polypropylene-based devices. Compound-specifi...
Arthur Lima De Avila - One of the best experts on this subject based on the ideXlab platform.
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Rememorando os Filhos de Onontio: Richard White, The Middle Ground e a escrita da história da América do Norte colonial Remembering the Children of Onontio: Richard White, The Middle Ground and the writing of the History of Colonial North America
2020Co-Authors: Arthur Lima De AvilaAbstract:Published in 1991, The Middle Ground, a book written by American historian Richard White, helped to bring about a revolution in the writings of Colonial North American History, with a perspective that gave emphasis to Indian exploits and the formation of a process of accords and commitments throughout the Great Lakes region. White managed to create a narrative that moved away from such terms as "assimilation" and "conquest", thus providing an account concerned with recovering the Other as a legitimate historical protagonist.
Kocku Von Stuckrad - One of the best experts on this subject based on the ideXlab platform.
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reenchanting nature modern western shamanism and nineteenth century thought
Journal of the American Academy of Religion, 2002Co-Authors: Kocku Von StuckradAbstract:In the second half of the 20th century there emerged in North America and Europe a complex phenomenon on the fringes of anthropology, science, and the so-called New Age that is often referred to as neoshamanism. Part of a larger discourse of nature-based spirituality, contemporary western shamanism is deeply rooted in European and North American History of thought. It can be analyzed in the light of a dialectic process of disenchantment and resacralization of the world. After having scrutinized neoshamanic concepts of nature, the article discusses paradigmatic examples for the existence of currents that contest disenchantment and fight the tendency within modern western culture to desacralize nature. It is shown the 19th century must be considered the formative phase of contemporary neoshamanic nature discourse.
Justin S. Griffin - One of the best experts on this subject based on the ideXlab platform.
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Flexible, Mechanically Durable Aerogel Composites for Oil Capture and Recovery
ACS Applied Materials and Interfaces, 2016Co-Authors: Osman Karatum, Justin S. Griffin, Stephen A. Steiner, Wenbo Shi, Desiree L. PlataAbstract:More than 30 years separate the two largest oil spills in North American History (the Ixtoc I and Macondo well blowouts), yet the responses to both disasters were nearly identical in spite of advanced material innovation during the same time period. Novel, mechanically durable sorbents could enable (a) sorbent use in the open ocean, (b) automated deployment to minimize workforce exposure to toxic chemicals, and (c) mechanical recovery of spilled oils. Here, we explore the use of two mechanically durable, low-density (0.1?0.2 g cm?3), highly porous (85?99% porosity), hydrophobic (water contact angles >120°), flexible aerogel composite blankets as sorbent materials for automated oil capture and recovery: Cabot Thermal Wrap (TW) and Aspen Aerogels Spaceloft (SL). Uptake of crude oils (Iraq and Sweet Bryan Mound oils) was 8.0 ± 0.1 and 6.5 ± 0.3 g g?1 for SL and 14.0 ± 0.1 and 12.2 ± 0.1 g g?1 for TW, respectively, nearly twice as high as similar polyurethane- and polypropylene-based devices. Compound-specific uptake experiments and discrimination against water uptake suggested an adsorption-influenced sorption mechanism. Consistent with that mechanism, chemical extraction oil recoveries were 95 ± 2 (SL) and 90 ± 2% (TW), but this is an undesirable extraction route in decentralized oil cleanup efforts. In contrast, mechanical extraction routes are favorable, and a modest compression force (38 N) yielded 44.7 ± 0.5% initially to 42.0 ± 0.4% over 10 reuse cycles for SL and initially 55.0 ± 0.1% for TW, degrading to 30.0 ± 0.2% by the end of 10 cycles. The mechanical integrity of SL deteriorated substantially (800 ± 200 to 80 ± 30 kPa), whereas TW was more robust (380 ± 80 to 700 ± 100 kPa) over 10 uptake-and-compression extraction cycles.
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Flexible, Mechanically Durable Aerogel Composites for Oil Capture and Recovery
ACS Applied Materials & Interfaces, 2015Co-Authors: Osman Karatum, Justin S. Griffin, Stephen A. Steiner, Desiree L. PlataAbstract:More than 30 years separate the two largest oil spills in North American History (the Ixtoc I and Macondo well blowouts), yet the responses to both disasters were nearly identical in spite of advanced material innovation during the same time period. Novel, mechanically durable sorbents could enable (a) sorbent use in the open ocean, (b) automated deployment to minimize workforce exposure to toxic chemicals, and (c) mechanical recovery of spilled oils. Here, we explore the use of two mechanically durable, low-density (0.1–0.2 g cm–3), highly porous (85–99% porosity), hydrophobic (water contact angles >120°), flexible aerogel composite blankets as sorbent materials for automated oil capture and recovery: Cabot Thermal Wrap (TW) and Aspen Aerogels Spaceloft (SL). Uptake of crude oils (Iraq and Sweet Bryan Mound oils) was 8.0 ± 0.1 and 6.5 ± 0.3 g g–1 for SL and 14.0 ± 0.1 and 12.2 ± 0.1 g g–1 for TW, respectively, nearly twice as high as similar polyurethane- and polypropylene-based devices. Compound-specifi...