The Experts below are selected from a list of 849 Experts worldwide ranked by ideXlab platform
Isabelle Olivieri - One of the best experts on this subject based on the ideXlab platform.
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Permanent Genetic Resources added to Molecular Ecology Resources database 1 January 2009-30 April 2009
Molecular Ecology Resources, 2009Co-Authors: L.g. Abercrombie, Fabienne Justy, J.j. Midgley, Isabelle OlivieriAbstract:This article documents the addition of 283 microsatellite marker loci to the Molecular Ecology Resources Database. Loci were developed for the following species: Agalinis acuta; Ambrosia artemisiifolia; Berula erecta; Casuarius casuarius; Cercospora zeae-maydis; Chorthippus parallelus; Conyza canadensis; Cotesia sesamiae; Epinephelus acanthistius; Ficedula hypoleuca; Grindelia hirsutula; Guadua angustifolia; Leucadendron rubrum; Maritrema novaezealandensis; Meretrix meretrix; Nilaparvata lugens; Oxyeleotris marmoratus; Phoxinus neogaeus; Pristomyrmex punctatus; Pseudobagrus brevicorpus; Seiridium cardinale; Stenopsyche marmorata; Tetranychus evansi and Xerus inauris. These loci were cross-tested on the following species: Agalinis decemloba; Agalinis tenella; Agalinis obtusifolia; Agalinis setacea; Agalinis skinneriana; Cercospora zeina; Cercospora kikuchii; Cercospora sorghi; Mycosphaerella graminicola; Setosphaeria turcica; Magnaporthe oryzae; Cotesia flavipes; Cotesia marginiventris; Grindelia Xpaludosa; Grindelia chiloensis; Grindelia fastigiata; Grindelia lanceolata; Grindelia squarrosa; Leucadendron coniferum; Leucadendron salicifolium; Leucadendron tinctum; Leucadendron meridianum; Laodelphax striatellus; Sogatella furcifera; Phoxinus eos; Phoxinus rigidus; Phoxinus brevispinosus; Phoxinus bicolor; Tetranychus urticae; Tetranychus turkestani; Tetranychus ludeni; Tetranychus neocaledonicus; Tetranychus amicus; Amphitetranychus viennensis; Eotetranychus rubiphilus; Eotetranychus tiliarium; Oligonychus perseae; Panonychus citri; Bryobia rubrioculus; Schizonobia bundi; Petrobia harti; Xerus princeps; Spermophilus tridecemlineatus and Sciurus carolinensis.
Bishnu Neupane - One of the best experts on this subject based on the ideXlab platform.
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fast pyrolysis of opuntia ficus indica prickly pear and Grindelia squarrosa gumweed
Energy & Fuels, 2018Co-Authors: Phillip Cross, Bishnu Neupane, Glenn C. Miller, Calvin Mukarakate, Mark Nimlos, Daniel Carpenter, Bryon S. Donohoe, Jesse A. Mayer, John C. Cushman, Sushil AdhikariAbstract:Opuntia ficus-indica (prickly pear) and Grindelia squarrosa (gumweed) are two exceptionally drought tolerant plant species capable of growing in arid and semiarid environments. Additionally, they have unique cell wall structures. Prickly pear contains pectin and high levels of ash (16.1%) that is predominantly Ca and K. Gumweed has high levels of extractives that contain grindelic acid and monoterpenoids. The objective of this paper was to evaluate how these unique cell wall components alter the pyrolysis performance of prickly pear and gumweed. Using a tandem micropyrolyzer with GC-MS/FID/TCD, a detailed account of the product slate is given for products generated between 450 and 650 °C. Pyrolysis of prickly pear showed that the high levels of ash increase the amount of organics volatilized and shifted product pools, making it possible to generate up to 7.3% carbonyls vs 3.8% for Pinus taeda (loblolly pine) and 10.5% hydrocarbons vs 1.8% for pine depending on reaction conditions. Pyrolysis of gumweed sho...
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Fast Pyrolysis of Opuntia ficus-indica (Prickly Pear) and Grindelia squarrosa (Gumweed)
2018Co-Authors: Phillip Cross, Bishnu Neupane, Glenn C. Miller, Calvin Mukarakate, Mark Nimlos, Daniel Carpenter, Bryon S. Donohoe, Jesse A. Mayer, John C. Cushman, Sushil AdhikariAbstract:Opuntia ficus-indica (prickly pear) and Grindelia squarrosa (gumweed) are two exceptionally drought tolerant plant species capable of growing in arid and semiarid environments. Additionally, they have unique cell wall structures. Prickly pear contains pectin and high levels of ash (16.1%) that is predominantly Ca and K. Gumweed has high levels of extractives that contain grindelic acid and monoterpenoids. The objective of this paper was to evaluate how these unique cell wall components alter the pyrolysis performance of prickly pear and gumweed. Using a tandem micropyrolyzer with GC-MS/FID/TCD, a detailed account of the product slate is given for products generated between 450 and 650 °C. Pyrolysis of prickly pear showed that the high levels of ash increase the amount of organics volatilized and shifted product pools, making it possible to generate up to 7.3% carbonyls vs 3.8% for Pinus taeda (loblolly pine) and 10.5% hydrocarbons vs 1.8% for pine depending on reaction conditions. Pyrolysis of gumweed showed that the extractives were volatilized at low temperatures and led to 17.7% grindelic acid and monoterpenoids derivatives in the condensed vapor phase. At high temperatures, the extractives and other biomass components are converted to aromatics and C5–C10 hydrocarbons, giving a total yield of 16.6%, and also generate large amounts of C2–C4 hydrocarbons, 11.3%
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Production of High-Density Renewable Aviation Fuel from Arid Land Crop
2018Co-Authors: Xiaokun Yang, Charles J Coronella, Bishnu Neupane, Helal M. Uddin, Xinpei Zhou, Glenn C. Miller, Simon R. Poulson, Hongfei LinAbstract:Grindelia squarrosa biocrude is a promising feedstock for producing high-density cycloalkane fuels for high-performance aircraft due to the branched tricyclic nature of its primary diterpenoid component, grindelic acid. Herein we designed a novel biphasic tandem catalytic process (biTCP) for the conversion of Grindelia squarrosa biocrude into high-density aviation fuels with a superior carbon atom efficiency. The systematic experimental studies provided valuable insights into the effects of process conditions. The detailed speciation was carried out with the complementary chemical analysis techniques. Under the optimum conditions, a ∼90% carbon yield of aviation fuel components was produced from the Grindelia squarrosa biocrude. Multistep tandem reactions, including cyclic ether ring opening, dehydration, hydrogenation, and decarboxylation were carried out in the “one-pot” biTCP. The detailed catalytic reaction mechanism is discussed. A continuous process was designed integrating the extraction of biocrude and its conversion to dense jet fuels using biTCP. The techno-economic analysis has been performed, and in its current state, the proposed process is expected to deliver price-competitive high-density aviation fuel products
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Grindelia squarrosa a potential arid lands biofuel plant
ACS Sustainable Chemistry & Engineering, 2017Co-Authors: Bishnu Neupane, Charles J Coronella, Hongfei Lin, David K. Shintani, Glenn C. MillerAbstract:Gumweed (Grindelia squarrosa) has potential as a biofuel/biomaterial crop in arid lands. Two years of biomass production data at University of Nevada, Reno (UNR) field plots varied from 6700 kg/ha up to 14 900 kg/ha with an average of 9950 kg/ha. Gumweed was planted in 4 m × 4 m plots at spacings of 15, 20, 25, 30, and 37 cm with three replications each. Acetone extraction of the ground, dried biomass yielded about 12.5% extractable hydrocarbons, called biocrude or crude resin. Approximately 52% of the biocrude extract consists of the C20 diterpene acid grindelic acid, which is also approximately 6.5% of the dried plant biomass. Additional carboxylic acids bring the total carboxylic acid fraction to approximately 68% of the biocrude. Also found in the biocrude is approximately 4.7% monoterpenes, including pinene, limonene, germacrene, elemene, and camphene. Acid-catalyzed methylation of the biocrude followed by hexane extraction and removal of the hexane and remaining methanol produced an approximately 72...
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Hydrothermal Carbonization (HTC) and Pelletization of Two Arid Land Plants Bagasse for Energy Densification
ACS Sustainable Chemistry & Engineering, 2015Co-Authors: M. Toufiq Reza, Charles J Coronella, Xiaokun Yang, Hongfei Lin, Upul Hathwaik, David K. Shintani, Bishnu Neupane, Glenn C. MillerAbstract:In this study, bagasse from two arid land plants, Grindelia and rabbitbrush, were hydrothermally carbonized (HTC) along with their raw biomass at 200–260 °C for 5 min. Prior to HTC, biocrude was extracted from Grindelia (Grindelia squarrosa), whereas rubber was extracted from rabbitbrush (Ericameria nauseosa). Solid hydrochars and HTC process liquids of extracted feedstocks were characterized by ultimate, proximate, fiber, FTIR, higher heating value (HHV), and GC–MS analyses and the results were compared with their corresponding unextracted conditions. Hydrochars were pelletized in a single-press pelletizer and mass and energy densities of the pellets were measured. From the proximate, ultimate, FTIR, and fiber analyses, the bagasse show similar properties of the raw biomass, although the HHV was slightly increased with crude extraction from Grindelia and decreased with rubber extraction from rabbitbrush. With the increase of HTC temperature, solid mass yield was decreased up to 44% for Grindelia bagasse ...
Sushil Adhikari - One of the best experts on this subject based on the ideXlab platform.
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fast pyrolysis of opuntia ficus indica prickly pear and Grindelia squarrosa gumweed
Energy & Fuels, 2018Co-Authors: Phillip Cross, Bishnu Neupane, Glenn C. Miller, Calvin Mukarakate, Mark Nimlos, Daniel Carpenter, Bryon S. Donohoe, Jesse A. Mayer, John C. Cushman, Sushil AdhikariAbstract:Opuntia ficus-indica (prickly pear) and Grindelia squarrosa (gumweed) are two exceptionally drought tolerant plant species capable of growing in arid and semiarid environments. Additionally, they have unique cell wall structures. Prickly pear contains pectin and high levels of ash (16.1%) that is predominantly Ca and K. Gumweed has high levels of extractives that contain grindelic acid and monoterpenoids. The objective of this paper was to evaluate how these unique cell wall components alter the pyrolysis performance of prickly pear and gumweed. Using a tandem micropyrolyzer with GC-MS/FID/TCD, a detailed account of the product slate is given for products generated between 450 and 650 °C. Pyrolysis of prickly pear showed that the high levels of ash increase the amount of organics volatilized and shifted product pools, making it possible to generate up to 7.3% carbonyls vs 3.8% for Pinus taeda (loblolly pine) and 10.5% hydrocarbons vs 1.8% for pine depending on reaction conditions. Pyrolysis of gumweed sho...
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Fast Pyrolysis of Opuntia ficus-indica (Prickly Pear) and Grindelia squarrosa (Gumweed)
2018Co-Authors: Phillip Cross, Bishnu Neupane, Glenn C. Miller, Calvin Mukarakate, Mark Nimlos, Daniel Carpenter, Bryon S. Donohoe, Jesse A. Mayer, John C. Cushman, Sushil AdhikariAbstract:Opuntia ficus-indica (prickly pear) and Grindelia squarrosa (gumweed) are two exceptionally drought tolerant plant species capable of growing in arid and semiarid environments. Additionally, they have unique cell wall structures. Prickly pear contains pectin and high levels of ash (16.1%) that is predominantly Ca and K. Gumweed has high levels of extractives that contain grindelic acid and monoterpenoids. The objective of this paper was to evaluate how these unique cell wall components alter the pyrolysis performance of prickly pear and gumweed. Using a tandem micropyrolyzer with GC-MS/FID/TCD, a detailed account of the product slate is given for products generated between 450 and 650 °C. Pyrolysis of prickly pear showed that the high levels of ash increase the amount of organics volatilized and shifted product pools, making it possible to generate up to 7.3% carbonyls vs 3.8% for Pinus taeda (loblolly pine) and 10.5% hydrocarbons vs 1.8% for pine depending on reaction conditions. Pyrolysis of gumweed showed that the extractives were volatilized at low temperatures and led to 17.7% grindelic acid and monoterpenoids derivatives in the condensed vapor phase. At high temperatures, the extractives and other biomass components are converted to aromatics and C5–C10 hydrocarbons, giving a total yield of 16.6%, and also generate large amounts of C2–C4 hydrocarbons, 11.3%
Glenn C. Miller - One of the best experts on this subject based on the ideXlab platform.
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fast pyrolysis of opuntia ficus indica prickly pear and Grindelia squarrosa gumweed
Energy & Fuels, 2018Co-Authors: Phillip Cross, Bishnu Neupane, Glenn C. Miller, Calvin Mukarakate, Mark Nimlos, Daniel Carpenter, Bryon S. Donohoe, Jesse A. Mayer, John C. Cushman, Sushil AdhikariAbstract:Opuntia ficus-indica (prickly pear) and Grindelia squarrosa (gumweed) are two exceptionally drought tolerant plant species capable of growing in arid and semiarid environments. Additionally, they have unique cell wall structures. Prickly pear contains pectin and high levels of ash (16.1%) that is predominantly Ca and K. Gumweed has high levels of extractives that contain grindelic acid and monoterpenoids. The objective of this paper was to evaluate how these unique cell wall components alter the pyrolysis performance of prickly pear and gumweed. Using a tandem micropyrolyzer with GC-MS/FID/TCD, a detailed account of the product slate is given for products generated between 450 and 650 °C. Pyrolysis of prickly pear showed that the high levels of ash increase the amount of organics volatilized and shifted product pools, making it possible to generate up to 7.3% carbonyls vs 3.8% for Pinus taeda (loblolly pine) and 10.5% hydrocarbons vs 1.8% for pine depending on reaction conditions. Pyrolysis of gumweed sho...
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Fast Pyrolysis of Opuntia ficus-indica (Prickly Pear) and Grindelia squarrosa (Gumweed)
2018Co-Authors: Phillip Cross, Bishnu Neupane, Glenn C. Miller, Calvin Mukarakate, Mark Nimlos, Daniel Carpenter, Bryon S. Donohoe, Jesse A. Mayer, John C. Cushman, Sushil AdhikariAbstract:Opuntia ficus-indica (prickly pear) and Grindelia squarrosa (gumweed) are two exceptionally drought tolerant plant species capable of growing in arid and semiarid environments. Additionally, they have unique cell wall structures. Prickly pear contains pectin and high levels of ash (16.1%) that is predominantly Ca and K. Gumweed has high levels of extractives that contain grindelic acid and monoterpenoids. The objective of this paper was to evaluate how these unique cell wall components alter the pyrolysis performance of prickly pear and gumweed. Using a tandem micropyrolyzer with GC-MS/FID/TCD, a detailed account of the product slate is given for products generated between 450 and 650 °C. Pyrolysis of prickly pear showed that the high levels of ash increase the amount of organics volatilized and shifted product pools, making it possible to generate up to 7.3% carbonyls vs 3.8% for Pinus taeda (loblolly pine) and 10.5% hydrocarbons vs 1.8% for pine depending on reaction conditions. Pyrolysis of gumweed showed that the extractives were volatilized at low temperatures and led to 17.7% grindelic acid and monoterpenoids derivatives in the condensed vapor phase. At high temperatures, the extractives and other biomass components are converted to aromatics and C5–C10 hydrocarbons, giving a total yield of 16.6%, and also generate large amounts of C2–C4 hydrocarbons, 11.3%
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Grindelia squarrosa a potential arid lands biofuel plant
ACS Sustainable Chemistry & Engineering, 2017Co-Authors: Bishnu Neupane, Charles J Coronella, Hongfei Lin, David K. Shintani, Glenn C. MillerAbstract:Gumweed (Grindelia squarrosa) has potential as a biofuel/biomaterial crop in arid lands. Two years of biomass production data at University of Nevada, Reno (UNR) field plots varied from 6700 kg/ha up to 14 900 kg/ha with an average of 9950 kg/ha. Gumweed was planted in 4 m × 4 m plots at spacings of 15, 20, 25, 30, and 37 cm with three replications each. Acetone extraction of the ground, dried biomass yielded about 12.5% extractable hydrocarbons, called biocrude or crude resin. Approximately 52% of the biocrude extract consists of the C20 diterpene acid grindelic acid, which is also approximately 6.5% of the dried plant biomass. Additional carboxylic acids bring the total carboxylic acid fraction to approximately 68% of the biocrude. Also found in the biocrude is approximately 4.7% monoterpenes, including pinene, limonene, germacrene, elemene, and camphene. Acid-catalyzed methylation of the biocrude followed by hexane extraction and removal of the hexane and remaining methanol produced an approximately 72...
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Grindelia squarrosa: A Potential Arid Lands Biofuel Plant
2016Co-Authors: Bishnu P. Neupane, Charles J Coronella, Hongfei Lin, David Shintani, Glenn C. MillerAbstract:Gumweed (Grindelia squarrosa) has potential as a biofuel/biomaterial crop in arid lands. Two years of biomass production data at University of Nevada, Reno (UNR) field plots varied from 6700 kg/ha up to 14 900 kg/ha with an average of 9950 kg/ha. Gumweed was planted in 4 m × 4 m plots at spacings of 15, 20, 25, 30, and 37 cm with three replications each. Acetone extraction of the ground, dried biomass yielded about 12.5% extractable hydrocarbons, called biocrude or crude resin. Approximately 52% of the biocrude extract consists of the C20 diterpene acid grindelic acid, which is also approximately 6.5% of the dried plant biomass. Additional carboxylic acids bring the total carboxylic acid fraction to approximately 68% of the biocrude. Also found in the biocrude is approximately 4.7% monoterpenes, including pinene, limonene, germacrene, elemene, and camphene. Acid-catalyzed methylation of the biocrude followed by hexane extraction and removal of the hexane and remaining methanol produced an approximately 72.5% yield of biofuel materials from the original extract. This mixture contained the methyl esters of the carboxylic acids, terpenes, and other unidentified compounds. When mixed with diesel fuel up to 20%, this blend produced a biofuel that met biofuel standards, although viscosity issues limit the percentage of gumweed biocrude that can be used in the blend. Grindelic acid methyl ester and a second ester produced during the acid-catalyzed methylation reaction (also identified as grindelic acid by GC–MS) eluted toward the end of a diesel fuel chromatogram. The Grindelia biofuel materials can be produced up to 1290 L/ha on a biennial basis, which is equivalent to 138 gal/acre, when extracted in hexane. This potential fuel can be produced on the arid lands of Nevada with minimal inputs of water, nutrients, and other agricultural services
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Hydrothermal Carbonization (HTC) and Pelletization of Two Arid Land Plants Bagasse for Energy Densification
ACS Sustainable Chemistry & Engineering, 2015Co-Authors: M. Toufiq Reza, Charles J Coronella, Xiaokun Yang, Hongfei Lin, Upul Hathwaik, David K. Shintani, Bishnu Neupane, Glenn C. MillerAbstract:In this study, bagasse from two arid land plants, Grindelia and rabbitbrush, were hydrothermally carbonized (HTC) along with their raw biomass at 200–260 °C for 5 min. Prior to HTC, biocrude was extracted from Grindelia (Grindelia squarrosa), whereas rubber was extracted from rabbitbrush (Ericameria nauseosa). Solid hydrochars and HTC process liquids of extracted feedstocks were characterized by ultimate, proximate, fiber, FTIR, higher heating value (HHV), and GC–MS analyses and the results were compared with their corresponding unextracted conditions. Hydrochars were pelletized in a single-press pelletizer and mass and energy densities of the pellets were measured. From the proximate, ultimate, FTIR, and fiber analyses, the bagasse show similar properties of the raw biomass, although the HHV was slightly increased with crude extraction from Grindelia and decreased with rubber extraction from rabbitbrush. With the increase of HTC temperature, solid mass yield was decreased up to 44% for Grindelia bagasse ...
L.g. Abercrombie - One of the best experts on this subject based on the ideXlab platform.
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Permanent Genetic Resources added to Molecular Ecology Resources database 1 January 2009-30 April 2009
Molecular Ecology Resources, 2009Co-Authors: L.g. Abercrombie, Fabienne Justy, J.j. Midgley, Isabelle OlivieriAbstract:This article documents the addition of 283 microsatellite marker loci to the Molecular Ecology Resources Database. Loci were developed for the following species: Agalinis acuta; Ambrosia artemisiifolia; Berula erecta; Casuarius casuarius; Cercospora zeae-maydis; Chorthippus parallelus; Conyza canadensis; Cotesia sesamiae; Epinephelus acanthistius; Ficedula hypoleuca; Grindelia hirsutula; Guadua angustifolia; Leucadendron rubrum; Maritrema novaezealandensis; Meretrix meretrix; Nilaparvata lugens; Oxyeleotris marmoratus; Phoxinus neogaeus; Pristomyrmex punctatus; Pseudobagrus brevicorpus; Seiridium cardinale; Stenopsyche marmorata; Tetranychus evansi and Xerus inauris. These loci were cross-tested on the following species: Agalinis decemloba; Agalinis tenella; Agalinis obtusifolia; Agalinis setacea; Agalinis skinneriana; Cercospora zeina; Cercospora kikuchii; Cercospora sorghi; Mycosphaerella graminicola; Setosphaeria turcica; Magnaporthe oryzae; Cotesia flavipes; Cotesia marginiventris; Grindelia Xpaludosa; Grindelia chiloensis; Grindelia fastigiata; Grindelia lanceolata; Grindelia squarrosa; Leucadendron coniferum; Leucadendron salicifolium; Leucadendron tinctum; Leucadendron meridianum; Laodelphax striatellus; Sogatella furcifera; Phoxinus eos; Phoxinus rigidus; Phoxinus brevispinosus; Phoxinus bicolor; Tetranychus urticae; Tetranychus turkestani; Tetranychus ludeni; Tetranychus neocaledonicus; Tetranychus amicus; Amphitetranychus viennensis; Eotetranychus rubiphilus; Eotetranychus tiliarium; Oligonychus perseae; Panonychus citri; Bryobia rubrioculus; Schizonobia bundi; Petrobia harti; Xerus princeps; Spermophilus tridecemlineatus and Sciurus carolinensis.
