Browsing NTNU Open by Author "Alsberg, Bjørn Kåre"
Now showing items 1-11 of 11
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A framework for significance analysis of gene expression data using dimension reduction methods
Gidskehaug, Lars; Anderssen, Endre; Flatberg, Arnar; Alsberg, Bjørn Kåre (Journal article; Peer reviewed, 2007)Background: The most popular methods for significance analysis on microarray data are well suited to find genes differentially expressed across predefined categories. However, identification of features that correlate ... -
A Method for Rapid Localisation of Hydrocarbon Compounds on Surfaces Using Chemical Imaging and Back-Projection
Aakre, Iselin (Master thesis, 2013)Discharges of unwanted chemicals into nature is a large and complex problem. Easy, fast and reliable methods for detecting these contaminants can be viewed as a first step towards a solution. Using a hyperspectral camera ... -
Can hyperspectral imaging be used to map corrosion products on outdoor bronze sculptures?
Catelli, Emilio; Randeberg, Lise Lyngsnes; Strandberg, Helena; Alsberg, Bjørn Kåre; Maris, Assimo; Vikki, Lily (Journal article; Peer reviewed, 2018)The application of hyperspectral imaging in the field of cultural heritage investigation is growing rapidly. In this study, short wavelength infrared hyperspectral imaging (960–2500 nm) has been explored as a potential ... -
Designing High-Refractive Index Polymers Using Materials Informatics
Venkatraman, Vishwesh; Alsberg, Bjørn Kåre (Journal article; Peer reviewed, 2018)A machine learning strategy is presented for the rapid discovery of new polymeric materials satisfying multiple desirable properties. Of particular interest is the design of high refractive index polymers. Our in silico ... -
Identification of Sources for Illegal Oil Spills by Using GC-MS (Gas Chromatography and Mass-Spectrometry) Databases and Multivariate Statistics
Kamalia, Uswatun Hasanah Isna (Master thesis, 2011)Preparing a defensible oil spill fingerprinting is always challenging. Presently available well established method for this purpose is a univariate method by comparison of diagnostic ratio using repeatability limit as ... -
Local initiation conditions for water autoionization
Moqadam, Mahmoud; Lervik, Anders; Riccardi, Enrico; Venkatraman, Vishwesh; Alsberg, Bjørn Kåre; van Erp, Titus Sebastiaan (Journal article; Peer reviewed, 2018)The pH of liquid water is determined by the infrequent process in which water molecules split into short-lived hydroxide and hydronium ions. This reaction is difficult to probe experimentally and challenging to simulate. ... -
Oil spill forensics - Identification of Sources for Illegal Oil Spills. A New Approach Combining Multivariate Statistics and Gas Chromatography and Mass-Spectrometry (GC-MS)
Belay, Masho Hilawie (Master thesis, 2016)The CEN/TR 15522-2:2012 standard is most widely used in Europe for oil spill fingerprinting purposes, which is based on comparison of specific source biomarkers by GC MS. This thesis was mainly aimed at establishing and ... -
Optical rotation from coupled cluster and density functional theories
Haghdani, Shokouh (Doctoral theses at NTNU; 2018:31, Doctoral thesis, 2018)Chiral compounds are of fundamental importance in medical chemistry, biochemistry, and industry. Optical rotation, which is one of the most well-known optical responses of chiral molecules to an electromagnetic field, is ... -
Predicting ionic liquid melting points using machine learning
Venkatraman, Vishwesh; Evjen, Sigvart; Knuutila, Hanna K; Fiksdahl, Anne; Alsberg, Bjørn Kåre (Journal article; Peer reviewed, 2018)The melting point (Tm) of an ionic liquid (IL) is of crucial importance in many applications. The Tm can vary considerably depending on the choice of the anion and cation. This study explores the use of various machine ... -
TD-DFT based fine-tuning of molecular excitation energies using evolutionary algorithms
Abburu, Sailesh; Venkatraman, Vishwesh; Alsberg, Bjørn Kåre (Journal article; Peer reviewed, 2016)An evolutionary de novo design method is presented to fine-tune the excitation energies of molecules calculated using time-dependent density functional theory (TD-DFT). The approach is applied to a π-conjugated molecular ... -
The dye-sensitized solar cell database
Venkatraman, Vishwesh; Raju, Rajesh; Economopoulos, Solon; Alsberg, Bjørn Kåre (Journal article; Peer reviewed, 2018)Dye-sensitized solar cells (DSSCs) have garnered a lot of attention in recent years. The solar energy to power conversion efficiency of a DSSC is influenced by various components of the cell such as the dye, electrolyte, ...