Sökning: "chemical fingerprint"

Visar resultat 1 - 5 av 10 uppsatser innehållade orden chemical fingerprint.

  1. 1. Application of Fourier Transforms to time-resolved ambient pressure spectroscopy operando studies of CO oxidation over Pt(111)

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Synkrotronljusfysik

    Författare :Grigore-Leon Ratiu; [2024]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : The study of heterogeneous catalysis has important implications in increasing the efficiency of industrial processes and in reducing the emissions of greenhouse gases from sources such as automobiles. A reaction with high industrial relevance is the oxidation of CO on noble metal catalysts. LÄS MER

  3. 2. Beständigheten hos brandimpregnerat trä

    Kandidat-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Filip Engström; Hannes Psajd; [2024]
    Nyckelord :Fire retardant treated wood; ISO 5660–1; Permanence; Euroclass; Cone Calorimeter; ConeTools; Infrared spectroscopy; Technology and Engineering;

    Sammanfattning : This report explores the properties of fire-retardant treated wood. This report has investigated the permanence for this material as well as seeing if the process of accelerated aging, which are used to determine the life span of the material, can be comparable to natural aging. LÄS MER

  4. 3. Siamese Neural Networks for Regression: Similarity-BasedPairing and Uncertainty Quantification

    Master-uppsats, Uppsala universitet/Institutionen för farmaceutisk biovetenskap

    Författare :Yumeng Zhang; [2022]
    Nyckelord :;

    Sammanfattning : Here we present a similarity-based pairing method for generating compound pairs to train a Siamese Neural Network. In comparison with the conventional exhaustive pairing of N2/2 pairs (N being the sizeof the training set), this method results in N-1 pairs, significantly reducing the training time. LÄS MER

  5. 4. Development and validation of sample clean-up using solid phase extraction prior oil spill fingerprinting

    Master-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

    Författare :Cheryl Loorents; [2022]
    Nyckelord :Oil spill; chemical fingerprint; solid phase extraction SPE ; development; validation.;

    Sammanfattning : In a forensic investigation involving oil, a comparative analysis named oil spill fingerprinting between a source and an oil spill is normally performed. It is based on detecting a certain selection of biomarkers with gas chromatography (GC) coupled to mass spectrometry (MS) which are later divided into diagnostic ratios (DRs). LÄS MER

  7. 5. Multi-task regression QSAR/QSPR prediction utilizing text-based Transformer Neural Network and single-task using feature-based models

    Master-uppsats, Linköpings universitet/Statistik och maskininlärning

    Författare :Spyridon Dimitriadis; [2021]
    Nyckelord :multi-task regression; QSAR; QSPR; deep learning; attention based models; transfer learning;

    Sammanfattning : With the recent advantages of machine learning in cheminformatics, the drug discovery process has been accelerated; providing a high impact in the field of medicine and public health. Molecular property and activity prediction are key elements in the early stages of drug discovery by helping prioritize the experiments and reduce the experimental work. LÄS MER