Search Results - "de Haan, O"

Brown Carbon Production in Ammonium- or Amine-Containing Aerosol Particles by Reactive Uptake of Methylglyoxal and Photolytic Cloud Cycling by De Haan, David O, Hawkins, Lelia N, Welsh, Hannah G, Pednekar, Raunak, Casar, Jason R, Pennington, Elyse A, de Loera, Alexia, Jimenez, Natalie G, Symons, Michael A, Zauscher, Melanie, Pajunoja, Aki, Caponi, Lorenzo, Cazaunau, Mathieu, Formenti, Paola, Gratien, Aline, Pangui, Edouard, Doussin, Jean-François

“…The effects of methylglyoxal uptake on the physical and optical properties of aerosol containing amines or ammonium sulfate were determined before and after…”
Get full text

Unveiling contextual realities by microscopically entangling a neutron by Shen, J., Kuhn, S. J., Dalgliesh, R. M., de Haan, V. O., Geerits, N., Irfan, A. A. M., Li, F., Lu, S., Parnell, S. R., Plomp, J., van Well, A. A., Washington, A., Baxter, D. V., Ortiz, G., Snow, W. M., Pynn, R.

“…The development of qualitatively new measurement capabilities is often a prerequisite for critical scientific and technological advances. Here we introduce an…”
Get full text

Glyoxal's impact on dry ammonium salts: fast and reversible surface aerosol browning by De Haan, David O, Hawkins, Lelia N, Jansen, Kevin, Welsh, Hannah G, Pednekar, Raunak, de Loera, Alexia, Jimenez, Natalie G, Tolbert, Margaret A, Cazaunau, Mathieu, Gratien, Aline, Bergé, Antonin, Pangui, Edouard, Formenti, Paola, Doussin, Jean-François

“…Alpha-dicarbonyl compounds are believed to form brown carbon in the atmosphere via reactions with ammonium sulfate (AS) in cloud droplets and aqueous aerosol…”
Get full text

Uptake of Glyoxal by Organic and Inorganic Aerosol by Corrigan, Ashley L, Hanley, Sean W, De Haan, David O

“…The uptake of glyoxal by a variety of organic and inorganic aerosol types was examined in a Teflon chamber. Rapid glyoxal uptake was observed for all…”
Get full text

Formation of Nitrogen-Containing Oligomers by Methylglyoxal and Amines in Simulated Evaporating Cloud Droplets by De Haan, David O, Hawkins, Lelia N, Kononenko, Julia A, Turley, Jacob J, Corrigan, Ashley L, Tolbert, Margaret A, Jimenez, Jose L

“…Reactions of methylglyoxal with amino acids, methylamine, and ammonium sulfate can take place in aqueous aerosol and evaporating cloud droplets. These…”
Get full text

Thermodynamics and Kinetics of Glyoxal Dimer Formation:  A Computational Study by Kua, Jeremy, Hanley, Sean W, De Haan, David O

“…Density functional theory (B3LYP//6-311+G*) calculations including Poisson−Boltzmann implicit solvent were used to study the hydration of glyoxal and…”
Get full text

Secondary Organic Aerosol Formation during Evaporation of Droplets Containing Atmospheric Aldehydes, Amines, and Ammonium Sulfate by Galloway, Melissa M, Powelson, Michelle H, Sedehi, Nahzaneen, Wood, Stephanie E, Millage, Katherine D, Kononenko, Julia A, Rynaski, Alec D, De Haan, David O

“…Reactions of carbonyl compounds in cloudwater produce organic aerosol mass through in-cloud oxidation and during postcloud evaporation. In this work, postcloud…”
Get full text

Maillard Chemistry in Clouds and Aqueous Aerosol As a Source of Atmospheric Humic-Like Substances by Hawkins, Lelia N, Lemire, Amanda N, Galloway, Melissa M, Corrigan, Ashley L, Turley, Jacob J, Espelien, Brenna M, De Haan, David O

“…The reported optical, physical, and chemical properties of aqueous Maillard reaction mixtures of small aldehydes (glyoxal, methylglyoxal, and glycolaldehyde)…”
Get full text

Secondary Organic Aerosol Formation by Glyoxal Hydration and Oligomer Formation:  Humidity Effects and Equilibrium Shifts during Analysis by Hastings, William P, Koehler, Charles A, Bailey, Earl L, De Haan, David O

“…Glyoxal is a significant atmospheric aldehyde formed from both anthropogenic aromatic compounds and biogenic isoprene emissions. The chemical behavior of…”
Get full text

Thermodynamics and Kinetics of Methylglyoxal Dimer Formation: A Computational Study by Krizner, Hadley E, De Haan, David O, Kua, Jeremy

“…Density functional theory (B3LYP//6-311+G*) calculations, including Poisson−Boltzmann implicit solvent and free energy corrections, are applied to study the…”
Get full text

Secondary Organic Aerosol Formation by Self-Reactions of Methylglyoxal and Glyoxal in Evaporating Droplets by De Haan, David O, Corrigan, Ashley L, Tolbert, Margaret A, Jimenez, Jose L, Wood, Stephanie E, Turley, Jacob J

“…Glyoxal and methylglyoxal are scavenged by clouds, where a fraction of these compounds are oxidized during the lifetime of the droplet. As a cloud droplet…”
Get full text

Thermodynamics and Kinetics of Imidazole Formation from Glyoxal, Methylamine, and Formaldehyde: A Computational Study by Kua, Jeremy, Krizner, Hadley E, De Haan, David O

“…Density functional theory calculations, including Poisson−Boltzmann implicit solvent and free energy corrections, are applied to study the mechanism of…”
Get full text

Heterogeneous Glyoxal Oxidation: A Potential Source of Secondary Organic Aerosol by Connelly, B. M, De Haan, D. O, Tolbert, M. A

“…Laboratory studies are described that suggest reactive uptake of glyoxal on particulate containing HNO3 could contribute to the formation of secondary organic…”
Get full text

Gas-phase water-mediated equilibrium between methylglyoxal and its geminal diol by Axson, Jessica L, Takahashi, Kaito, De Haan, David O, Vaida, Veronica

“…In aqueous solution, aldehydes, and to a lesser extent ketones, hydrate to form geminal diols. We investigate the hydration of methylglyoxal (MG) in the gas…”
Get full text

Atmospheric condensed-phase reactions of glyoxal with methylamine by De Haan, David O., Tolbert, Margaret A., Jimenez, Jose L.

“…Glyoxal reacts with methylamine in drying cloud droplet/aerosol surrogates to form high molecular mass oligomers along with smaller amounts of…”
Get full text

Oligomer Formation in Evaporating Aqueous Glyoxal and Methyl Glyoxal Solutions by Loeffler, Kirsten W, Koehler, Charles A, Paul, Nichole M, De Haan, David O

“…Glyoxal and methyl glyoxal are common secondary atmospheric pollutants, formed from aromatic and terpene precursors. Both compounds are extremely water-soluble…”
Get full text

Observation of the Goos-Hänchen shift with neutrons by de Haan, Victor-O, Plomp, Jeroen, Rekveldt, Theo M, Kraan, Wicher H, van Well, Ad A, Dalgliesh, Robert M, Langridge, Sean

“…The Goos-Hänchen effect is a spatial shift along an interface resulting from an interference effect that occurs for total internal reflection. This phenomenon…”
Get full text

Application of a two-phase thermosyphon loop calculation method to a cold neutron source by de Haan, Victor-O., Knudsen, Kenneth D.

“…•Thermodynamics of two-phase thermosyphon loop verified by responses and neutronic measurements.•Pressure and void fraction during cooldown verified by…”
Get full text

Phase-object approximation in small-angle neutron scattering experiments on silicon gratings by De Haan, Victor-O., Plomp, Jeroen, Bouwman, Wim G., Trinker, Martin, Rekveldt, M. Theo, Duif, Chris P., Jericha, Erwin, Rauch, Helmut, Van Well, Ad A.

“…The phase‐object approximation for neutron scattering based on a one‐dimensional dynamic forward scattering theory is discussed and used to calculate the…”
Get full text

Methylamine’s Effects on Methylglyoxal-Containing Aerosol: Chemical, Physical, and Optical Changes by De Haan, David O, Pajunoja, Aki, Hawkins, Lelia N, Welsh, Hannah G, Jimenez, Natalie G, De Loera, Alexia, Zauscher, Melanie, Andretta, Alyssa D, Joyce, Benjamin W, De Haan, Audrey C, Riva, Matthieu, Cui, Tianqu, Surratt, Jason D, Cazaunau, Matthieu, Formenti, Paola, Gratien, Aline, Pangui, Edouard, Doussin, Jean-François

“…Methylamine, a common atmospheric amine species, is found in the gas, particle, and aqueous phases. It has been shown to form light-absorbing, oligomeric…”
Get full text