Search Results - "Riemer, Daniel"

Visible‐Light‐Mediated Dearomatisation of Indoles and Pyrroles to Pharmaceuticals and Pesticides by Schilling, Waldemar, Zhang, Yu, Riemer, Daniel, Das, Shoubhik

“…Dearomatisation of indole derivatives to the corresponding isatin derivatives has been achieved with the aid of visible light and oxygen. It should be noted…”
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Metal-Free Catalyst for Visible-Light-Induced Oxidation of Unactivated Alcohols Using Air/Oxygen as an Oxidant by Schilling, Waldemar, Riemer, Daniel, Zhang, Yu, Hatami, Nareh, Das, Shoubhik

“…9-Fluorenone acts as a metal-free and additive-free photocatalyst for the selective oxidation of primary and secondary alcohols under visible light. With this…”
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Metal-free photocatalysts for the oxidation of non-activated alcohols and the oxygenation of tertiary amines performed in air or oxygen by Zhang, Yu, Schilling, Waldemar, Riemer, Daniel, Das, Shoubhik

“…This protocol describes the use of 9-fluorenone as a cheap and non-toxic photocatalyst for the oxidation of non-activated alcohols performed under the…”
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Chemoselective Synthesis of Carbamates using CO2 as Carbon Source by Riemer, Daniel, Hirapara, Pradipbhai, Das, Shoubhik

“…Synthesis of carbamates directly from amines using CO2 as the carbon source is a straightforward and sustainable approach. Herein, we describe a highly…”
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Differential volatile signatures from skin, naevi and melanoma: a novel approach to detect a pathological process by Abaffy, Tatjana, Duncan, Robert, Riemer, Daniel D, Tietje, Olaf, Elgart, George, Milikowski, Clara, DeFazio, R Anthony

“…Early detection of melanoma is of great importance to reduce mortality. Discovering new melanoma biomarkers would improve early detection and diagnosis. Here,…”
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Atmospheric Acetaldehyde: Importance of Air‐Sea Exchange and a Missing Source in the Remote Troposphere by Wang, Siyuan, Hornbrook, Rebecca S., Hills, Alan, Emmons, Louisa K., Tilmes, Simone, Lamarque, Jean‐François, Jimenez, Jose L., Campuzano‐Jost, Pedro, Nault, Benjamin A., Crounse, John D., Wennberg, Paul O., Kim, Michelle, Allen, Hannah, Ryerson, Thomas B., Thompson, Chelsea R., Peischl, Jeff, Moore, Fred, Nance, David, Hall, Brad, Elkins, James, Tanner, David, Huey, L. Gregory, Hall, Samuel R., Ullmann, Kirk, Orlando, John J., Tyndall, Geoff S., Flocke, Frank M., Ray, Eric, Hanisco, Thomas F., Wolfe, Glenn M., St. Clair, Jason, Commane, Róisín, Daube, Bruce, Barletta, Barbara, Blake, Donald R., Weinzierl, Bernadett, Dollner, Maximilian, Conley, Andrew, Vitt, Francis, Wofsy, Steven C., Riemer, Daniel D., Apel, Eric C.

“…We report airborne measurements of acetaldehyde (CH3CHO) during the first and second deployments of the National Aeronautics and Space Administration…”
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A pervasive role for biomass burning in tropical high ozone/low water structures by Anderson, Daniel C., Nicely, Julie M., Salawitch, Ross J., Canty, Timothy P., Dickerson, Russell R., Hanisco, Thomas F., Wolfe, Glenn M., Apel, Eric C., Atlas, Elliot, Bannan, Thomas, Bauguitte, Stephane, Blake, Nicola J., Bresch, James F., Campos, Teresa L., Carpenter, Lucy J., Cohen, Mark D., Evans, Mathew, Fernandez, Rafael P., Kahn, Brian H., Kinnison, Douglas E., Hall, Samuel R., Harris, Neil R.P., Hornbrook, Rebecca S., Lamarque, Jean-Francois, Le Breton, Michael, Lee, James D., Percival, Carl, Pfister, Leonhard, Pierce, R. Bradley, Riemer, Daniel D., Saiz-Lopez, Alfonso, Stunder, Barbara J.B., Thompson, Anne M., Ullmann, Kirk, Vaughan, Adam, Weinheimer, Andrew J.

“…Air parcels with mixing ratios of high O 3 and low H 2 O (HOLW) are common features in the tropical western Pacific (TWP) mid-troposphere (300–700 hPa). Here,…”
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High levels of molecular chlorine in the Arctic atmosphere by Liao, Jin, Huey, L. Gregory, Liu, Zhen, Tanner, David J., Cantrell, Chris A., Orlando, John J., Flocke, Frank M., Shepson, Paul B., Weinheimer, Andrew J., Hall, Samuel R., Ullmann, Kirk, Beine, Harry J., Wang, Yuhang, Ingall, Ellery D., Stephens, Chelsea R., Hornbrook, Rebecca S., Apel, Eric C., Riemer, Daniel, Fried, Alan, Mauldin, Roy L., Smith, James N., Staebler, Ralf M., Neuman, J. Andrew, Nowak, John B.

“…Chlorine radicals function as a strong atmospheric oxidant, particularly in polar regions, where levels of hydroxyl radicals are low. Measurements in the…”
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BrO and inferred Br y profiles over the western Pacific: relevance of inorganic bromine sources and a Br y minimum in the aged tropical tropopause layer by Koenig, Theodore K., Volkamer, Rainer, Baidar, Sunil, Dix, Barbara, Wang, Siyuan, Anderson, Daniel C., Salawitch, Ross J., Wales, Pamela A., Cuevas, Carlos A., Fernandez, Rafael P., Saiz-Lopez, Alfonso, Evans, Mathew J., Sherwen, Tomás, Jacob, Daniel J., Schmidt, Johan, Kinnison, Douglas, Lamarque, Jean-François, Apel, Eric C., Bresch, James C., Campos, Teresa, Flocke, Frank M., Hall, Samuel R., Honomichl, Shawn B., Hornbrook, Rebecca, Jensen, Jørgen B., Lueb, Richard, Montzka, Denise D., Pan, Laura L., Reeves, J. Michael, Schauffler, Sue M., Ullmann, Kirk, Weinheimer, Andrew J., Atlas, Elliot L., Donets, Valeria, Navarro, Maria A., Riemer, Daniel, Blake, Nicola J., Chen, Dexian, Huey, L. Gregory, Tanner, David J., Hanisco, Thomas F., Wolfe, Glenn M.

“…We report measurements of bromine monoxide (BrO) and use an observationally constrained chemical box model to infer total gas-phase inorganic bromine (Bry)…”
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Fine particle and organic vapor emissions from staged tests of an in-use aircraft engine by Presto, Albert A., Nguyen, Ngoc T., Ranjan, Manish, Reeder, Aaron J., Lipsky, Eric M., Hennigan, Christopher J., Miracolo, Marissa A., Riemer, Daniel D., Robinson, Allen L.

“…Staged tests were conducted to measure the particle and vapor emissions from a CFM56-2B1 gas-turbine engine mounted on a KC-135T Stratotanker airframe at…”
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Application of fluorescence and PARAFAC to assess vertical distribution of subsurface hydrocarbons and dispersant during the Deepwater Horizon oil spill by Mendoza, Wilson G, Riemer, Daniel D, Zika, Rod G

“…We evaluated the use of excitation and emission matrix (EEM) fluorescence and parallel factorial analysis (PARAFAC) modeling techniques for monitoring crude…”
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An Observationally Constrained Evaluation of the Oxidative Capacity in the Tropical Western Pacific Troposphere by Nicely, Julie M., Anderson, Daniel C., Canty, Timothy P., Salawitch, Ross J., Wolfe, Glenn M., Apel, Eric C., Arnold, Steve R., Atlas, Elliot L., Blake, Nicola J., Bresch, James F., Campos, Teresa L., Dickerson, Russell R., Duncan, Bryan, Emmons, Louisa K., Evans, Mathew J., Fernandez, Rafael P., Flemming, Johannes, Hall, Samuel R., Hanisco, Thomas F., Honomichl, Shawn B., Hornbrook, Rebecca S., Huijnen, Vincent, Kaser, Lisa, Kinnison, Douglas E., Lamarque, Jean-Francois, Mao, Jingqui, Monks, Sarah A., Montzka, Denise D., Pan, Laura L., Riemer, Daniel D., Saiz-Lopez, Alfonso, Steenrod, Stephen D., Stell, Meghan H., Tilmes, Simone, Turquety, Solene, Ullmann, Kirk, Weinheimer, Andrew J.

“…Hydroxyl radical (OH) is the main daytime oxidant in the troposphere and determines the atmospheric lifetimes of many compounds. We use aircraft measurements…”
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Missing OH Reactivity in a Forest: Evidence for Unknown Reactive Biogenic VOCs by Di Carlo, Piero, Brune, William H., Martinez, Monica, Harder, Hartwig, Lesher, Robert, Ren, Xinrong, Thornberry, Troy, Carroll, Mary Anne, Young, Valerie, Shepson, Paul B., Riemer, Daniel, Apel, Eric, Campbell, Colleen

“…Forest emissions of biogenic volatile organic compounds (BVOCs), such as isoprene and other terpenes, play a role in the production of tropospheric ozone and…”
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Arctic springtime observations of volatile organic compounds during the OASIS‐2009 campaign by Hornbrook, Rebecca S., Hills, Alan J., Riemer, Daniel D., Abdelhamid, Aroob, Flocke, Frank M., Hall, Samuel R., Huey, L. Gregory, Knapp, David J., Liao, Jin, Mauldin, Roy L., Montzka, Denise D., Orlando, John J., Shepson, Paul B., Sive, Barkley, Staebler, Ralf M., Tanner, David. J., Thompson, Chelsea R., Turnipseed, Andrew, Ullmann, Kirk, Weinheimer, Andrew J., Apel, Eric C.

“…Gas‐phase volatile organic compounds (VOCs) were measured at three vertical levels between 0.6 m and 5.4 m in the Arctic boundary layer in Barrow, Alaska, for…”
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New Insights to the Use of Ethanol in Automotive Fuels: A Stable Isotopic Tracer for Fossil- and Bio-Fuel Combustion Inputs to the Atmosphere by Giebel, Brian M, Swart, Peter K, Riemer, Daniel D

“…Ethanol is currently receiving increased attention because of its use as a biofuel or fuel additive and because of its influence on air quality. We used stable…”
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Airborne measurements of BrO and the sum of HOBr and Br2 over the Tropical West Pacific from 1 to 15km during the CONvective TRansport of Active Species in the Tropics (CONTRAST) experiment by Chen, Dexian, Huey, L Gregory, Tanner, David J, Salawitch, Ross J, Anderson, Daniel C, Wales, Pamela A, Pan, Laura L, Atlas, Elliot L, Hornbrook, Rebecca S, Apel, Eric C, Blake, Nicola J, Campos, Teresa L, Donets, Valeria, Flocke, Frank M, Hall, Samuel R, Hanisco, Thomas F, Hills, Alan J, Honomichl, Shawn B, Jensen, Jørgen B, Kaser, Lisa, Montzka, Denise D, Nicely, Julie M, Reeves, J Michael, Riemer, Daniel D, Schauffler, Sue M, Ullmann, Kirk, Weinheimer, Andrew J, Wolfe, Glenn M

“…A chemical ionization mass spectrometer was used to measure BrO and HOBr+Br2 over the Tropical West Pacific Ocean within the altitude range of 1 to 15km,…”
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A comparison of very short lived halocarbon (VSLS) and DMS aircraft measurements in the tropical west Pacific from CAST, ATTREX and CONTRAST by Andrews, Stephen J, Carpenter, Lucy J, Apel, Eric C, Atlas, Elliot, Donets, Valeria, Hopkins, James R, Hornbrook, Rebecca S, Lewis, Alastair C, Lidster, Richard T, Lueb, Richard, Minaeian, Jamie, Navarro, Maria, Punjabi, Shalini, Riemer, Daniel, Schauffler, Sue

“…We present a comparison of aircraft measurements of halogenated very short lived substances (VSLSs) and dimethyl sulphide (DMS, C2H6S) from a co-ordinated…”
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Particulate Matter and Organic Vapor Emissions from a Helicopter Engine Operating on Petroleum and Fischer–Tropsch Fuels by Drozd, Greg T, Miracolo, Marissa A, Presto, Albert A, Lipsky, Eric M, Riemer, Daniel D, Corporan, Edwin, Robinson, Allen L

“…Particle and gaseous emissions from a T63 gas-turbine engine were characterized using three fuels: standard military jet fuel (JP-8), Fischer–Tropsch (FT)…”
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Atmospheric methanol budget and ocean implication by Heikes, Brian G., Chang, Wonil, Pilson, Michael E. Q., Swift, Elijah, Singh, Hanwant B., Guenther, Alex, Jacob, Daniel J., Field, Brendan D., Fall, Ray, Riemer, Daniel, Brand, Larry

“…Methanol is a biogeochemically active compound and a significant component of the volatile organic carbon in the atmosphere. It influences background…”
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The chemical processing of gas-phase carbonyl compounds by sulfuric acid aerosols: 2,4-pentanedione by Nozière, Barbara, Riemer, Daniel D

“…This work investigates the interactions between gas-phase carbonyl compounds and sulfuric acid aerosols. It focuses on understanding the chemical processes,…”
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