Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Reidar Arneberg"'
Publikováno v:
SSRN Electronic Journal.
Erosion on the wall surface due to hard particle impact is a well-known challenge encountered in industrial pneumatic conveying systems. Surface erosion by particle impact depends on many factors. Numerous studies have shown the dependency of erosion
Autor:
Johan A. Westerhuis, Tarja Rajalahti, Olav Bleie, Olav M. Kvalheim, Age K. Smilde, Reidar Arneberg
Publikováno v:
Journal of Chemometrics. 28:615-622
The quality and practical usefulness of a regression model are a function of both interpretability and prediction performance. This work presents some new graphical tools for improved interpretation of latent variable regression models that can also
Autor:
Reidar Arneberg, Magnus Berle, Olav M. Kvalheim, Ann C. Kroksveen, Kjell-Morten Myhr, Tarja Rajalahti
Publikováno v:
Analytical Chemistry. 81:2581-2590
The discriminating variable (DIVA) test and the selectivity ratio (SR) plot are developed as quantitative tools for revealing the variables in spectral or chromatographic profiles discriminating best between two groups of samples. The SR plot is visu
Publikováno v:
Journal of Chemometrics. 23:49-55
Target projection (TP) also called target rotation (TR) was introduced to facilitate interpretation of latent-variable regression models. Orthogonal partial least squares (OPLS) regression and PLS post-processing by similarity transform (PLS + ST) re
Autor:
Rune J. Ulvik, Frode S. Berven, Olav M. Kvalheim, Kjell-Morten Myhr, Tarja Rajalahti, Reidar Arneberg
Publikováno v:
Chemometrics and Intelligent Laboratory Systems. 95:35-48
This work presents a new method for variable selection in complex spectral profiles. The method is validated by comparing samples from cerebrospinal fluid (CSF) with the same samples spiked with peptide and protein standards at different concentratio
Autor:
Ann Cathrine Kroksveen, Kristian Flikka, Magnus Berle, Christian A. Vedeler, Kjell-Morten Myhr, Olav M. Kvalheim, Reidar Arneberg, Frode S. Berven, Tarja Rajalahti, Rune J. Ulvik
Publikováno v:
PROTEOMICS – Clinical Applications. 1:699-711
Cerebrospinal fluid (CSF) is a perfect source to search for new biomarkers to improve early diagnosis of neurological diseases. Standardization of pre-analytical handling of the sample is, however, important to obtain acceptable analytical quality. I
Publikováno v:
BMC Research Notes
Background: Classical scrapie in sheep is a fatal neurodegenerative disease associated with the conversion PrPC to PrPSc. Much is known about genetic susceptibility, uptake and dissemination of PrPSc in the body, but many aspects of prion diseases ar
Autor:
Tarja Rajalahti, Frode S. Berven, Ann C. Kroksveen, Kjell-Morten Myhr, Reidar Arneberg, Christian A. Vedeler, Olav M. Kvalheim
Publikováno v:
Journal of proteome research. 9(7)
Mass spectral profiles from cerebrospinal fluid (CSF) are used as input to a novel multivariate approach to select features responsible for the separation of patients with multiple sclerosis (MS) from control groups. Our targeted statistical approach
Autor:
Kristian Flikka, Frode S. Berven, Ann C. Kroksveen, Rune J. Ulvik, Olav M. Kvalheim, Kjell-Morten Myhr, Tarja Rajalahti, Reidar Arneberg, Magnus Berle, Christian A. Vedeler
Publikováno v:
Analytical chemistry. 79(18)
Mass spectral profiles are influenced by several factors that have no relation to compositional differences between samples: baseline effects, shifts in mass-to-charge ratio (m/z) (synchronization/alignment problem), structured noise (heteroscedastic
Autor:
Reidar Arneberg, Bodil Thorvaldsen, Ingvar Eide, Bjørn Grung, Gunhild Neverdal, Olav M. Kvalheim
Publikováno v:
Environmental toxicology and pharmacology. 18(2)
The present paper describes a strategy for toxicological evaluation of complex mixtures based on chemical “fingerprinting” followed by pattern recognition (multivariate data analysis). The purpose is to correlate chemical fingerprints to measured