Results 31 to 40 of about 1,185,266 (267)

High-resolution aerosol data from the top 3.8 kyr of the East Greenland Ice coring Project (EGRIP) ice core [PDF]

Earth System Science Data, 2023
Here we present the high-resolution continuous flow analysis (CFA) data from the top 479 m of the East Greenland Ice coring Project (EGRIP) ice core covering the past 3.8 kyr.
T. Erhardt, T. Erhardt, T. Erhardt, C. M. Jensen, C. M. Jensen, F. Adolphi, F. Adolphi, F. Adolphi, H. A. Kjær, R. Dallmayr, B. Twarloh, M. Behrens, M. Hirabayashi, K. Fukuda, J. Ogata, F. Burgay, F. Burgay, F. Scoto, F. Scoto, I. Crotti, A. Spagnesi, A. Spagnesi, N. Maffezzoli, N. Maffezzoli, D. Segato, D. Segato, C. Paleari, F. Mekhaldi, R. Muscheler, S. Darfeuil, H. Fischer, H. Fischer   +31 more
doaj   +1 more source

A MALDI-TOF MS approach for mammalian, human, and formula milks’ profiling [PDF]

, 2018
Human milk composition is dynamic, and substitute formulae are intended to mimic its protein content. The purpose of this study was to investigate the potentiality of matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry (MALDI-TOF
DI FRANCESCO, Laura, DI GIROLAMO, Francesco, Dotta, Andrea, Fiocchi, Alessandro, Ibrahim Elbousify, Ahmed, Lante, Isabella, Maria Goffredo, Bianca, Masotti, Andrea, Mazzina, Oscar, Mennini, Maurizio, Pietrantoni, Emanuela, Putignani, Lorenza, Rigon, Giuliano, Roncada, Paula, Salvatori, Guglielmo, Scapaticci, Margherita, Signore, Fabrizio   +16 more
core   +1 more source

Heterogeneous formation and light absorption of secondary organic aerosols from acetone photochemical reactions: remarkably enhancing effects of seeds and ammonia [PDF]

Atmospheric Chemistry and Physics
Secondary organic aerosols (SOAs) from highly volatile organic compounds (VOCs) are currently not well represented in numerical models as their heterogeneous formation mechanisms in the atmosphere remain unclear.
S. Zhang, Y. Gao, X. Xu, L. Chen, C. Wu, C. Wu, Z. Li, R. Li, B. Xiao, X. Liu, R. Li, R. Li, F. Zhang, F. Zhang, G. Wang, G. Wang   +15 more
doaj   +1 more source

Postmidnight equatorial plasma irregularities on the June solstice during low solar activity – a case study [PDF]

Annales Geophysicae, 2019
We present a case study of unusual spread-F structures observed by ionosondes at two equatorial and low-latitude Brazilian stations – São Luís (SL: 44.2∘ W, 2.33∘ S; dip angle: −6.9∘) and Fortaleza (FZ: 38.45∘ W, 3.9∘ S; dip ...
C. M. N. Candido, C. M. N. Candido, J. Shi, I. S. Batista, F. Becker-Guedes, E. Correia, E. Correia, M. A. Abdu, M. A. Abdu, J. Makela, N. Balan, N. Chapagain, C. Wang, Z. Liu   +13 more
doaj   +1 more source

Marine carbonyl sulfide (OCS) and carbon disulfide (CS₂): a compilation of measurements in seawater and the marine boundary layer [PDF]

Earth System Science Data, 2020
Carbonyl sulfide (OCS) and carbon disulfide (CS2) are volatile sulfur gases that are naturally formed in seawater and exchanged with the atmosphere. OCS is the most abundant sulfur gas in the atmosphere, and CS2 is its most important precursor. They have
S. T. Lennartz, S. T. Lennartz, C. A. Marandino, M. von Hobe, M. O. Andreae, M. O. Andreae, K. Aranami, E. Atlas, M. Berkelhammer, H. Bingemer, D. Booge, G. Cutter, P. Cortes, S. Kremser, C. S. Law, C. S. Law, A. Marriner, R. Simó, B. Quack, G. Uher, H. Xie, X. Xu   +21 more
doaj   +1 more source

Formation and loss of light absorbance by phenolic aqueous SOA by ^⚫OH and an organic triplet excited state [PDF]

Atmospheric Chemistry and Physics
Brown carbon (BrC) is an important component of biomass-burning (BB) emissions that impacts Earth's radiation budget. BB directly emits primary BrC as well as gaseous phenolic compounds (ArOH), which react in the gas and aqueous phases with oxidants ...
S. Arciva, L. Ma, L. Ma, C. Mavis, C. Mavis, C. Guzman, C. Guzman, C. Anastasio   +7 more
doaj   +1 more source

Power Graphs of Finite Groups Determined by Hosoya Properties

Entropy, 2022
Suppose G is a finite group. The power graph represented by P(G) of G is a graph, whose node set is G, and two different elements are adjacent if and only if one is an integral power of the other. The Hosoya polynomial contains much information regarding
Fawad Ali, Bilal Ahmad Rather, Anwarud Din, Tareq Saeed, Asad Ullah   +4 more
doaj   +1 more source

Direct contribution of ammonia to α-pinene secondary organic aerosol formation [PDF]

Atmospheric Chemistry and Physics, 2020
Ammonia (NH3), a gaseous compound ubiquitously present in the atmosphere, is involved in the formation of secondary organic aerosol (SOA), but the exact mechanism is still not well known.
L. Hao, E. Kari, E. Kari, A. Leskinen, A. Leskinen, D. R. Worsnop, D. R. Worsnop, A. Virtanen   +7 more
doaj   +1 more source

Macroscopicity of quantum superpositions on a one-parameter unitary path in Hilbert space [PDF]

, 2014
We analyze quantum states formed as superpositions of an initial pure product state and its image under local unitary evolution, using two measurement-based measures of superposition size: one based on the optimal quantum binary distinguishability of the
Volkoff, T. J., Whaley, K. B.
core   +3 more sources

Natural nanomaterials : reappraising the elusive structure of the nano-sized mineral ferrihydrite through X-Ray absorption spectroscopy at the iron K-edge [PDF]

, 2013
Ferrihydrite is natural ferric oxyhydroxide occurring exclusively nanocrystalline. With ideal formula 5 Fe2 O3 . 9 H2 O, ferrihydrite is quite abundant in sediments, weathering crusts and mine wastes, being characteristic of red pre-soils formed by ...
Figueiredo, M. Ondina, Silva, Teresa, Veiga, JP   +2 more
core   +1 more source