Essays about: "Periodiska processer"

Found 4 essays containing the words Periodiska processer.

  1. 1. Detailed chemical abundances of neutron-capture elements - from 523 local giant stars

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Rebecca Forsberg; [2019]
    Keywords : The Milky Way galaxy; Abundances; High-resolution spectroscopy; Neutron-capture elements; Physics and Astronomy;

    Abstract : Purpose: The purpose of this work is to determine the abundances of neutron-capture elements in solar neighborhood giant stars. This enables constraints to be put on the the cosmic origin of these elements. READ MORE

  3. 2. The status of neutron-capture elements according to Gaia-ESO.

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Linnéa Strandell; [2017]
    Keywords : Neutron-capture elements; Gaia-ESO; Milky Way field stars; Physics and Astronomy;

    Abstract : The aim of this thesis is to get a better understanding of the evolution of the Milky Way stellar disc by looking at the abundance ratios for neutron-capture elements in thin and thick disc stars. In this project the formation of our Galaxy’s thin and thick disc was studied by analysing 10 different neutron-capture elements in field stars measured by Gaia-ESO. READ MORE

  4. 3. Biologiska strategier hos träd för tillväxt och överlevnad i syrefattig hårdgjord stadsmiljö

    University essay from SLU/Dept. of Landscape Architecture, Planning and Management (from 130101)

    Author : Alicia Rosati; [2014]
    Keywords : floodplain; waterlogging; dendroecological studies; tolerans; syrefattiga miljöer; strategier; översvämning; hårdgjorda stadsmiljöer; träd;

    Abstract : Syrefattiga förhållanden från översvämningar uppstår tillfälligt i hårdgjorda stadsmiljöer och hotar trädens tillväxt och överlevnad. Under perioder av syrefattiga förhållanden uppstår skador på trädets rotsystem och viktiga biologiska processer som fotosyntes och respiration hämmas. READ MORE

  5. 4. The Circulant Rational Covariance Extension Problem for a Skew Periodic Stochastic Process

    University essay from KTH/Optimeringslära och systemteori

    Author : Axel Ringh; [2014]
    Keywords : Rational covariance extension problem; Circulant rational covariance; Rationella kovariansutvidgningsproblemet; Cirkulära rationella kovariansutvidgningsproblemet; Periodiska processer; Skev-periodiska processer; Talsignalbehandling;

    Abstract : The Rational Covariance Extension Problem is a problemin applied mathematics where one tries to find a rational spectral density thatmatches a finite covariance sequence. Applications of this can be used in areaslike speech- and image-processing. READ MORE