Zobrazeno 1 - 10
of 63
pro vyhledávání: '"A. E. Karu"'
Autor:
P. G. Eger, L. Vereecken, R. Sander, J. Schuladen, N. Sobanski, H. Fischer, E. Karu, J. Williams, V. Vakkari, T. Petäjä, J. Lelieveld, A. Pozzer, J. N. Crowley
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 14333-14349 (2021)
Based on the first measurements of gas-phase pyruvic acid (CH3C(O)C(O)OH) in the boreal forest, we derive effective emission rates of pyruvic acid and compare them with monoterpene emission rates over the diel cycle. Using a data-constrained box mode
Externí odkaz:
https://doaj.org/article/4b4582c6dbc248b3a77f2ac0a4c7fb89
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 1817-1831 (2021)
A gas detection system has been developed, characterized, and deployed for pressurized gas-phase sample analyses and near-real-time online measurements. It consists of a cryogenic pre-concentrator (CryoTrap), a gas chromatograph (GC), and a new high-
Externí odkaz:
https://doaj.org/article/eddd633abae646a49cf88e120ae05659
Autor:
P. G. Eger, J. Schuladen, N. Sobanski, H. Fischer, E. Karu, J. Williams, M. Riva, Q. Zha, M. Ehn, L. L. J. Quéléver, S. Schallhart, J. Lelieveld, J. N. Crowley
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 3697-3711 (2020)
Pyruvic acid (CH3C(O)C(O)OH, 2-oxopropanoic acid) is an organic acid of biogenic origin that plays a crucial role in plant metabolism, is present in tropospheric air in both gas-phase and aerosol-phase, and is implicated in the formation of secondary
Externí odkaz:
https://doaj.org/article/bf3c3ceb39e446a2b69cd4738fae5d33
Autor:
J. Liebmann, N. Sobanski, J. Schuladen, E. Karu, H. Hellén, H. Hakola, Q. Zha, M. Ehn, M. Riva, L. Heikkinen, J. Williams, H. Fische, J. Lelieveld, J. N. Crowley
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 10391-10403 (2019)
The formation of alkyl nitrates in various oxidation processes taking place throughout the diel cycle can represent an important sink of reactive nitrogen and mechanism for chain termination in atmospheric photo-oxidation cycles. The low-volatility a
Externí odkaz:
https://doaj.org/article/3726fcc1606045c1bfa2be5ec748e7a4
Autor:
J. Liebmann, E. Karu, N. Sobanski, J. Schuladen, M. Ehn, S. Schallhart, L. Quéléver, H. Hellen, H. Hakola, T. Hoffmann, J. Williams, H. Fischer, J. Lelieveld, J. N. Crowley
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 3799-3815 (2018)
We present the first direct measurements of NO3 reactivity (or inverse lifetime, s−1) in the Finnish boreal forest. The data were obtained during the IBAIRN campaign (Influence of Biosphere-Atmosphere Interactions on the Reactive Nitrogen budget
Externí odkaz:
https://doaj.org/article/a48480eef07249d7ae10ac0f6b955b89
Autor:
Jean-Luc Pellequer, Victoria A. Roberts, Shu-wen W. Chen, Alexander E. Karu, Qing X. Li, Young-Soo Keum
Publikováno v:
Journal of Molecular Recognition
Journal of Molecular Recognition, 2005, 18, pp.282-294. ⟨10.1002/jmr.740⟩
Journal of Molecular Recognition, 2005, 18, pp.282-294. ⟨10.1002/jmr.740⟩
Polychlorinated biphenyls (PCBs) are a family of 209 isomers (congeners) with a wide range of toxic effects. In structural terms, they are of two types: those with and those without chlorines at the ortho positions (2, 2′, 6 and 6′). Only 20 cong
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ada4ebdeda57e0649ed747bb8b611776
https://doi.org/10.1002/jmr.740
https://doi.org/10.1002/jmr.740
Publikováno v:
Journal of Agricultural and Food Chemistry. 50:3380-3389
A set of haptens structurally resembling the herbicide imazethapyr (PURSUIT) was synthesized and used to derive monoclonal antibodies (MAbs) and direct and indirect competition enzyme immunoassays (EIAs) which could detect imazethapyr, imazaquin (SCE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8256260f55e8963c2bcf74204bffda5f
https://doi.org/10.1021/jf011481o
https://doi.org/10.1021/jf011481o
Publikováno v:
Bayero Journal of Pure and Applied Sciences. 9:221
The chemical composition and some selected metal ions of the fruit Azanza garckeana locally called “Goron Tula” obtained from different parts of Tula in Kaltungo Local Government Area of Gombe State were analysed. The chemical compositions determ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2682720e0677466f08b00d8bc216cb2
https://doi.org/10.4314/bajopas.v9i2.38
https://doi.org/10.4314/bajopas.v9i2.38
Publikováno v:
Analytical Chemistry. 73:5477-5484
A previously described monoclonal antibody, S2B1, was highly selective for coplanar (non-ortho-chlorinated) PCB congeners in enzyme immunoassays that measured binding at equilibrium. In the present study, kinetic exclusion fluoroimmunoassay (KinExA)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e519bdd669ecdb4681a2e7284d5d4a4
https://doi.org/10.1021/ac0102462
https://doi.org/10.1021/ac0102462
Publikováno v:
Analytica Chimica Acta. 419:1-8
Several approaches were investigated to fully use an enzyme linked immunosorbent assay (ELISA) for accurate measurement of polycyclic aromatic hydrocarbons (PAHs) and their degradation products in surface water and sediment collected from the Pearl H
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db0ca4de0321f95976388def387161e0
https://doi.org/10.1016/s0003-2670(00)00989-2
https://doi.org/10.1016/s0003-2670(00)00989-2