Search for dissertations about: "Analytical model"

Showing result 1 - 5 of 927 swedish dissertations containing the words Analytical model.

  1. 1. Analytical Aspects of Atmospheric Pressure Ionisation in Mass Spectrometry

    Author : C. Fredrik Bökman; J. David Pinkston; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; Analytisk kemi; Analytical chemistry; Analytisk kemi; Analytical Chemistry; analytisk kemi;

    Abstract : The actual signal recorded with an analytical instrument is not always a true reflection of the analysed sample. In this thesis a further insight of the atmospheric pressure ionisation processes electrospray (ESI) and atmospheric pressure chemical ionisation (APCI) has been endeavoured, to provide a deeper understanding of and ways to minimize this bias. READ MORE

  2. 2. Analytical Pyrolysis - Studies of Sulfur in Coal and Pulp

    Author : Pernille Selsbo; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; sulfur; pulp; PLS; PCA; fractionated pyrolysis; FPD; analytical pyrolysis; coal; Analytical chemistry; Analytisk kemi;

    Abstract : Sulfur in coal and pulp have been characterized using pyrolysis–gas chromatography with a sulfur-selective flame photometric detector (Py–GC/FPD). The samples (50–150 µg) were pyrolyzed at temperatures between 300 and 1400°C usually followed by a combustion in oxygen at high temperature (>1000°C). READ MORE

  3. 3. Variance Reduction in Analytical Chemistry : New Numerical Methods in Chemometrics and Molecular Simulation

    Author : K. Magnus Åberg; Sven P. Jacobsson; Richard G. Brereton; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; chemometrics; pulse-coupled neural networks; peak alignment; class separability; molecular dynamics; Monte Carlo; expanded ensembles; free energy; Analytical chemistry; Analytisk kemi;

    Abstract : This thesis is based on five papers addressing variance reduction in different ways. The papers have in common that they all present new numerical methods. READ MORE

  4. 4. Retention time predictions in Gas Chromatography

    Author : Yasar Thewalim; Anders Colmsjö; Torgny Fornstedt; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; gas chromatography; computer simulation; two-parameter model; retention time prediction; Analytical chemistry; Analytisk kemi; Analytical Chemistry; analytisk kemi;

    Abstract : In gas chromatography, analytes are separated by differences in their partition between a mobile phase and a stationary phase. Temperature-program, column dimensions, stationary and mobile phases, and flow rate are all parameters that can affect the quality of the separation in gas chromatography. READ MORE

  5. 5. Long-Term Simulation of Coastal Evolution

    Author : Hoan Le Xuan; Avdelningen för Teknisk vattenresurslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tidal inlet; inlet shoal; sediment transport; spit growth; shoreline change; spit model; inlet model; mathematical model; numerical model; shoreline model;

    Abstract : There is a strong relationship between regional sediment transport and the local processes at tidal inlets and around coastal structures. Many coastal projects require quantitative understanding of these processes and the interactions between them. READ MORE