Results 61 to 70 of about 1,040,831 (304)

Quantifying pollution transport from the Asian monsoon anticyclone into the lower stratosphere [PDF]

Atmospheric Chemistry and Physics, 2017
Pollution transport from the surface to the stratosphere within the Asian monsoon circulation may cause harmful effects on stratospheric chemistry and climate.
F. Ploeger, P. Konopka, K. Walker, M. Riese   +3 more
doaj   +1 more source

Sources and Secondary Production of Organic Aerosols in the Northeastern United States during WINTER [PDF]

, 2018
Most intensive field studies investigating aerosols have been conducted in summer, and thus, wintertime aerosol sources and chemistry are comparatively poorly understood.
Apel, E. C., Blake, N. J., Brown, S. S., Campos, T., Campuzano-Jost, P., Day, D. A., Dibb, Jack E., Fibiger, D. L., Guo, H., Hayes, P. L., Hills, A., Hornbrook, R. S., Jaegle, L., Jimenez, J. L., Larson, K., McDuffie, E. E., Reeves, J. M., Scheuer, Eric M., Schroder, J. C., Shah, V., Sommers, J. M., Sullivan, A. P., Thornton, J. A., Weber, R. J.   +23 more
core   +2 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Lung surface-active fraction as a model system for macromolecular ultrastructural studies with Crotalus atrox venom

Journal of Lipid Research, 1973
The dog lung surface-active fraction and phosphatidylcholine constituents were subjected to hydrolysis by Crotalus atrox phospholipase A2. Relative rates of hydrolysis were: dipalmitoyl glycerophosphorylcholine > phosphatidylcholine isolated from the ...
M.F. Frosolono, R. Pawlowski, B.L. Charms, C. Corbusier, M. Abrams, J. Jones, III   +5 more
doaj   +1 more source

Improved decision making with similarity based machine learning: applications in chemistry

Machine Learning: Science and Technology, 2023
Despite the fundamental progress in autonomous molecular and materials discovery, data scarcity throughout chemical compound space still severely hampers the use of modern ready-made machine learning models as they rely heavily on the paradigm, ‘the ...
Dominik Lemm, Guido Falk von Rudorff, O Anatole von Lilienfeld   +2 more
doaj   +1 more source

Cross-linking of Polystyrene by Friedel–Crafts Chemistry to Improve Thermal Stability [PDF]

, 1999
Copolymers which contain either alcohol or chloride functionalized polystyrene units have been prepared and they participate in Friedel–Crafts chemistry to give cross-linked polymers by the evolution of either hydrogen chloride or water.
Jiang, David D., McKinney, Michael A., Wang, Zhitao, Wilkie, Charles   +3 more
core   +1 more source

In situ measurements of tropospheric volcanic plumes in Ecuador and Colombia during TC^4 [PDF]

, 2011
A NASA DC-8 research aircraft penetrated tropospheric gas and aerosol plumes sourced from active volcanoes in Ecuador and Colombia during the Tropical Composition, Cloud and Climate Coupling (TC^4) mission in July–August 2007. The likely source volcanoes
Anderson, B. E., Browell, E. V., Carn, S. A., Crounse, J., Dibb, J. E., Diskin, G., Froyd, K. D., Hair, J. W., Krotkov, N. A., Sachse, G., Spencer, K., Vay, S. A., Wennberg, P.   +12 more
core   +2 more sources

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

Chemical abundances in Galactic planetary nebulae with Spitzer spectra [PDF]

, 2014
We present new low-resolution (R~800) optical spectra of 22 Galactic PNe with Spitzer spectra. These data are combined with recent optical spectroscopic data available in the literature to construct representative samples of compact (and presumably young)
Garcia-Hernandez, D. A., Gorny, S. K.
core   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source