Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Significance of variables for discrimination: Applied to the search of organic ions in mass spectra measured on cometary particles

Varmuza, K., Filzmoser, P., Hoffmann, I., Walach, J., Cottin, H., Fray, N., et al. (2018). Significance of variables for discrimination: Applied to the search of organic ions in mass spectra measured on cometary particles. Journal of Chemometrics, 32(4): e3001. doi:10.1002/cem.3001.

Item is

Basisdaten

einblenden: ausblenden:
Genre: Zeitschriftenartikel

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Varmuza, Kurt, Autor
Filzmoser, Peter, Autor
Hoffmann, Irene, Autor
Walach, Jan, Autor
Cottin, Hervé, Autor
Fray, Nicolas, Autor
Briois, Christelle, Autor
Modica, Paola, Autor
Bardyn, Anaïs, Autor
Silén, Johan, Autor
Siljeström, Sandra, Autor
Stenzel, Oliver Joachim1, Autor           
Kissel, Jochen1, Autor           
Hilchenbach, Martin2, Autor           
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              
2MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832291              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: The instrument Cometary Secondary Ion Mass Analyzer (COSIMA) on board of the European Space Agency mission Rosetta to the comet 67P/Churyumov‐Gerasimenko is a secondary ion mass spectrometer with a time‐of‐flight mass analyzer. It collected near the comet several thousand particles, imaged them, and analyzed the elemental and chemical compositions of their surfaces. In this study, variables have been generated from the spectral data covering the mass ranges of potential C‐, H‐, N‐, and O‐containing ions. The variable importance in binary discriminations between spectra measured on cometary particles and those measured on the target background has been estimated by the univariate t test and the multivariate methods discriminant partial least squares, random forest, and a robust method based on the log ratios of all variable pairs. The results confirm the presence of organic substances in cometary matter—probably a complex macromolecular mixture.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2019-03-192018
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1002/cem.3001
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Journal of Chemometrics
  Andere : J. Chemometr.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: New York : Wiley
Seiten: - Band / Heft: 32 (4) Artikelnummer: e3001 Start- / Endseite: - Identifikator: ISSN: 0886-9383
CoNE: https://pure.mpg.de/cone/journals/resource/954925553387