Essays about: "upper and lower boundaries"

Showing result 1 - 5 of 6 essays containing the words upper and lower boundaries.

  1. 1. Influence of grain growth on the thermal structure of inner protoplanetary discs

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Author : Sofia Savvidou; [2018]
    Keywords : protoplanetary disc; thermal structure; hydrodynamical simulations; grain size distribution; grain growth; opacity; iceline; Physics and Astronomy;

    Abstract : Protoplanetary discs surround young stars for the first few million years after their formation and they are the birthplaces of planetary systems. The thermal structure of the discs is regulated by their dust content and the opacity that it provides. READ MORE

  3. 2. Pigment dispersion processing, optimization for higher pigmentation

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Hans Paajanen; [2018]
    Keywords : polymer technology; polymerteknologi; Chemistry;

    Abstract : One way to make a UV curable ink is to mix a pigment dispersion with monomers, oligomers, photoinitiators and additives. Creating a pigment dispersion is in many cases the first processing step of making a UV curable ink and is of large importance. READ MORE

  4. 3. Modeling and Control of Lime Addition in a Flotation Process

    University essay from Linköpings universitet/Reglerteknik

    Author : Rasmus Tammia; [2017]
    Keywords : Automatic Control; Mineral Processing; Flotation Process; pH Control; System Identification; Modeling; Signal Processing;

    Abstract : Flotation is an important and versatile mineral processing technique that is used to separate hydrophobic materials from hydrophilic. This technique makes it possible to mine complex ores that otherwise would have been regarded as uneconomic and non-beneficial. In this case flotation is used to separate copper from the unwanted gangue. READ MORE

  5. 4. Asymptotic behavior and effective boundaries forage-structured population models in aperiodically changing environment

    University essay from Linköpings universitet/Matematik och tillämpad matematik; Linköpings universitet/Tekniska fakulteten

    Author : Jonathan Andersson; [2017]
    Keywords : age-structure; time-dependency; environmental variability; upper and lower boundaries; periodic oscillations; logistic;

    Abstract : Human activity and other events can cause environmental changes to the habitat of organisms. The environmental changes effect the vital rates for a population. In order to predict the impact of these environmental changes on populations, we use two different models for population dynamics. READ MORE

  6. 5. Trilobites and bradoriid arthropods from the Middle and Upper Cambrian at Gudhem in Västergötland, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Anders Bengtsson; [1999]
    Keywords : Arthropoda; Trilobita; Bradoriida; taxonomy; biostratigraphy; Middle Cambrian; Västergötland; Sweden; Earth and Environmental Sciences;

    Abstract : Middle and basal Upper Cambrian strata are well exposed in an old quarry at Gudhem in the Falbygden area of Västergötland, south-central Sweden. The exposures consist of finely laminated alum shale with scattered stinkstone (orsten) lenses, up to 2.3 m in diameter. READ MORE