Essays about: "strontium"

Showing result 16 - 20 of 32 essays containing the word strontium.

  1. 16. Influence of Sample Preparation on Portable XRF-analyses of Aeolian Sediments: a Case Study

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Markus L. Fiola; [2017]
    Keywords : portable XRF; loess; sediment; bärbar XRF; lössjord; sediment;

    Abstract : The geochemical composition of aeolian sediments like windblown dust particles is of major importance for the exploration of dust origin and weathering conditions. This allows for the reconstruction of dust transport pathways and thus wind directions and palaeoclimate conditions. READ MORE

  3. 17. Ammonia Metal Halides Thermochemical Heat Storage System Design

    University essay from KTH/Energiteknik

    Author : Michail Laios; [2017]
    Keywords : thermochemical heat storage TCS ; NH3-SrCl2 system; absorption; desorption; numerical modelling; Aspen; termokemisk värmelagring TCS ; NH3-SrCl2 system; absorption; desorption; numerisk modellering; Aspen;

    Abstract : One of the most crucial issues nowadays is the protection of the environment and the replacement of fossil fuels, which are abundantly used around the world, with more efficient and renewable sources. The highest portion of global energy demands today is used in heating and cooling purposes. READ MORE

  4. 18. The influence of microstructural deformations and defects on mechanical properties in cast aluminium components by using Digital Image Correlation Techniques (DICT)

    University essay from Högskolan i Jönköping/Tekniska Högskolan

    Author : Jahanmehr Armanjo; [2015]
    Keywords : Al-Si cast alloys; AlSi7Mg0.3; strontium modification; heat treatment; SDAS Secondary Dendrite Arm Space ; Aramis; digital image correlation technique DICT ; mechanical properties ultimate tensile strength; offset yield strength and elongation ; plaster mould processes;

    Abstract : Digital image correlation techniques (DICT), a non-contact deformation measuring technique based on gray value digital images, have become increasingly used over the last years. By using the DIC technique during a tensile test, the deformation behavior of different engineering material under an applied load can be determined and analyzed. READ MORE

  5. 19. Identifying Prehistoric Origin and Mobility : using Strontium analysis and laser ablation on teeth enamel from Viking Age boat-graves XI and XIII from Tuna in Alsike

    University essay from Stockholms universitet/Arkeologiska forskningslaboratoriet

    Author : Elias Ghattas Lama; [2015]
    Keywords : Strontium analysis; boat graves; Viking Age;

    Abstract : The Viking Age cemetery of Tuna in Alsike from the 9th - 11th century AD is located in the eastern part of middle Sweden and contains inhumation boat graves. Here analysis of Strontium isotopes, using laser ablation method on the tooth enamel of the canine and first molar of two individuals buried in boat-graves XI and XIII have been performed. READ MORE

  6. 20. Characterization of a Zeeman Slower Designed for a 87 Sr Optical Clock

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Synkrotronljusfysik

    Author : Jonas Olsson; [2015]
    Keywords : metrology; time; frequency; atomic clock; optical clock; strontium; frequency comb; zeeman slower; arduino; Physics and Astronomy;

    Abstract : Optical clocks will potentially become the new frequency standard for the SI-definition of the second. Many national metrology institutes around the world have already implemented different versions of such clocks and others are in process of doing so. At SP Technical Research Institute of Sweden, this process has recently begun. READ MORE