Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Sarah J. Dixon"'
Autor:
Dustin J. Penn, Iveta Klouckova, Sarah J. Dixon, Richard G. Brereton, Donald Wiesler, Milos V. Novotny, Elisabeth Oberzaucher, Karl Grammer, Helena A. Soini, Yun Xu
Publikováno v:
Journal of Chemical Ecology. 36:1035-1042
Human saliva not only helps control oral health (with anti-microbial proteins), but it may also play a role in chemical communication. As is the case with other mammalian species, human saliva contains peptides, proteins, and numerous volatile organi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::885e10c1d60326a102f58951a89e323f
https://doi.org/10.1007/s10886-010-9846-7
https://doi.org/10.1007/s10886-010-9846-7
Autor:
Sarah J. Dixon, Richard G. Brereton
Publikováno v:
Chemometrics and Intelligent Laboratory Systems. 95:1-17
Five methods for discrimination are described, namely Euclidean Distance to centroids (EDC), Linear Discriminant Analysis (LDA) (based on the Mahalanobis distance and pooled variance covariance matrix), Quadratic Discriminant Analysis (QDA) (based on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::054ce0c94025677bc309f4060b8bd7ed
https://doi.org/10.1016/j.chemolab.2008.07.010
https://doi.org/10.1016/j.chemolab.2008.07.010
Autor:
Richard G. Brereton, Jose M. Trevejo, Sarah J. Dixon, Maria E. Holmboe, Nina Heinrich, Randall R. Reed, Michele L. Schaefer
Publikováno v:
Journal of Chemometrics. 23:19-31
To quantify separate classes, four indices are compared namely the Davies Bouldin index, the silhouette width and two new approaches described in this paper, the modified silhouette width index based on the proportion of objects with a positive silho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d5a2849104dca75a5fa4b17b6d745d4
https://doi.org/10.1002/cem.1189
https://doi.org/10.1002/cem.1189
Autor:
Sarah J. Dixon, Dustin J. Penn, Milos V. Novotny, Elisabeth Oberzaucher, Karl Grammer, Fan Gong, Yun Xu, Helena A. Soini, Richard G. Brereton
Publikováno v:
Analytical Chemistry. 79:5633-5641
The majority of works in metabolomics employ approaches based on principal components analysis (PCA) and partial least-squares, primarily to determine whether samples fall within large groups. However, analytical chemists rarely tackle the problem of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da29bb238c87c6846d3ec193c49b77a3
https://doi.org/10.1021/ac070134w
https://doi.org/10.1021/ac070134w
Autor:
Yun Xu, Ingrid Bergmaier, Elisabeth Oberzaucher, Milos V. Novotny, Sarah J. Dixon, Dustin J. Penn, Richard G. Brereton, Karl Grammer, Helena A. Soini, Karl-Heinz Dr. Trebesius
Publikováno v:
Metabolomics. 3:427-437
Several studies have shown that microbial action is responsible for many compounds responsible for human odour. In this paper, we compare the pattern of microbial profiles and that of chemical profiles of human axillary odour by using multivariate pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f1942220dc0e32966fb94f0f6888845
https://doi.org/10.1007/s11306-007-0054-6
https://doi.org/10.1007/s11306-007-0054-6
Autor:
Karl Grammer, Helena A. Soini, Milos V. Novotny, Elisabeth Oberzaucher, Yun Xu, Sarah J. Dixon, Dustin J. Penn, Richard G. Brereton
Publikováno v:
Chemometrics and Intelligent Laboratory Systems. 87:161-172
Pattern recognition studies are performed on the gas chromatography mass spectrometry of extracts of human sweat of 182 subjects sampled 5 times (over 5 fortnights), in an attempt to determine whether it is possible to classify samples into those ari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d2af8aad582f84def5e798b8c52ef8d
https://doi.org/10.1016/j.chemolab.2006.12.004
https://doi.org/10.1016/j.chemolab.2006.12.004
Autor:
Dustin J. Penn, Gottfried Fischer, Donald Wiesler, Richard G. Brereton, Yun Xu, Milos V. Novotny, Elisabeth Oberzaucher, Karl Grammer, Sarah J. Dixon, Helena A. Soini
Publikováno v:
Journal of The Royal Society Interface. 4:331-340
Individuals are thought to have their own distinctive scent, analogous to a signature or fingerprint. To test this idea, we collected axillary sweat, urine and saliva from 197 adults from a village in the Austrian Alps, taking five sweat samples per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14637c550726eccd5693c9f1b4fa8748
https://doi.org/10.1098/rsif.2006.0182
https://doi.org/10.1098/rsif.2006.0182
Publikováno v:
Journal of Chemometrics. 20:325-340
A new approach for peak detection and matching has been developed and applied to two data sets. The first consisted of the Gas Chromatography-Mass Spectrometry (GC-MS) samples of 965 human sweat samples obtained from a population of 197 individuals.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::102de10d6a32e4b15ff79f5026619198
https://doi.org/10.1002/cem.1005
https://doi.org/10.1002/cem.1005
Autor:
Randall R. Reed, Maria E. Holmboe, Nina Heinrich, Kanet Wongravee, Michele L. Schaefer, Julie E. Zeskind, Heather Kulaga, Richard G. Brereton, Jose M. Trevejo, Sarah J. Dixon
Publikováno v:
Chemical senses. 35(6)
Body fluids such as urine potentially contain a wealth of information pertaining to age, sex, social and reproductive status, physiologic state, and genotype of the donor. To explore whether urine could encode information regarding environment, physi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52aa251e044c8742f09648fc0cf8ac41
https://pubmed.ncbi.nlm.nih.gov/20418335
https://pubmed.ncbi.nlm.nih.gov/20418335
Autor:
Simeone Zomer, Sarah J. Dixon, Yun Xu, Susanne P. Jensen, Huitu Wang, Clare V. Lanyon, Anthony G. O'Donnell, Anthony S. Clare, L. Morris Gosling, Dustin J. Penn, Richard G. Brereton
Publikováno v:
Analyst; Dec2008, Vol. 134 Issue 1, p114-123, 10p