Band broadening
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Small pre-packed columns are commonly used to estimate the optimum run parameters for pilot and production scale. The question arises if the experiments obtained with these columns are scalable, because there are substantial changes in extra column volume when going from a very small scale to a benchtop column.
9p viginny 23-12-2022 9 3 Download
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Conventional one-dimensional column-based liquid chromatographic (LC) systems do not offer sufficient separation power for the analysis of complex mixtures. Column-based comprehensive two-dimensional liquid chromatography offers a higher separation power, yet suffers from instrumental complexity and long analysis times.
8p viginny 23-12-2022 9 3 Download
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A computational fluid dynamics method was used for prediction of flow behavior and band profiles of small- and macro-molecule compounds eluting in extra-column volumes (ECV) of an Äkta chromatographic system. The model compounds were: Acetone, bovine serum albumin and an antibody. The construction of ECV was approximated by different types of geometries, starting from the simplest two-dimensional.
10p viginny 23-12-2022 9 3 Download
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The use of a highly divergent field distribution (i.e. corona discharge or micro discharge) is essential in order to analyse different breakdown stages. In our work, we have measured the emission spectra and specially, the pressure broadening and shift of atomic lines and molecular bands.
5p vijaguar 16-11-2022 12 1 Download
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We prove the existence of dynamical delocalization for random Landau Hamiltonians near each Landau level. Since typically there is dynamical localization at the edges of each disordered-broadened Landau band, this implies the existence of at least one dynamical mobility edge at each Landau band, namely a boundary point between the localization and delocalization regimes, which we prove to converge to the corresponding Landau level as either the magnetic field goes to infinity or the disorder goes to zero. ...
31p noel_noel 17-01-2013 33 6 Download