Sökning: "lab experiment"

Visar resultat 11 - 15 av 77 avhandlingar innehållade orden lab experiment.

  1. 11. Anions from the lab to ionospheres

    Författare :Fredrik Lindén; Wolf Geppert; Henning Zettergren; Henrik Cederquist; Olle Björneholm; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; kemisk fysik; Chemical Physics;

    Sammanfattning : Anion processes have been in the focus of interest during the last decades, especially due to their importance in planetary ionospheres.  Previous observations done by the Cassini Plasma Spectrometer, detected a multitude of heavy neutral and ionic molecules in the ionosphere of Saturn's moon Titan. LÄS MER

  3. 12. Fairness, technology adoption, water sanitation and pandemic control : Six essays on four topics in Development Economics

    Författare :Selene Ghisolfi; Jakob Svensson; Ingvild Almas; Aureo de Paula; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Fairness; Bargaining; Field experiment; Lab-in-the-field; optimal policy; Community-Driven Development; Water Sanitation; Agriculture; Technology adoption; Market for quality; Covid-19; Mortality rates; Developing countries; Behavioural response; Economics; nationalekonomi;

    Sammanfattning : Contribution Requirements and Redistribution Decisions: Experimental Evidence from Bangladesh uses a controlled experiment to assess the effects of requiring co-funding to development programs on the efficiency and distribution of benefits within the community.Market Access and Quality Upgrading: Evidence from Randomized Experiments tests if increasing reward to quality produce improves profits, agricultural productivity, and input use, using a randomized experiment in Uganda. LÄS MER

  4. 13. Biotic and abiotic isotope fractionation of copper and iron : From the lab to the field scale

    Författare :Nathalie Pérez Rodríguez; Dominik Weiss; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Sammanfattning : The distribution of the stable isotopes of Cu and Fe in nature is susceptible to isotope fractionation processes during the biogeochemical cycle. Since Cu and Fe are redox sensitive metals, differences in their oxidation states can lead to variations in the stable isotope composition of the aquatic species or compounds that they form. LÄS MER

  5. 14. Mechanisms of Anion Reactions from the lab to ionospheres

    Författare :Fredrik Lindén; Wolf D. Geppert; Henrik Cederquist; Henning Zettergren; Einar Uggerud; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ab initio; anion; complex molecules; cross section; electron transfer; heavy ions; ionosphere; nitriles; quantum chemistry; spectroscopy; kemisk fysik; Chemical Physics;

    Sammanfattning : A multitude of heavy neutral and ionic molecules have been discovered by the Cassini Plasma Spectrometer in the ionosphere of Saturn's largest moon Titan. However, only three cyano anions were explicitly identified there, namely CN-, C3N- and C5N-. LÄS MER

  7. 15. Accelerator physics studies of the MAX-lab storage rings

    Författare :Magnus Sjöström; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electron accelerator; linear optics; storage ring; characterisation; synchrotron radiation; emittance; intrabeam scattering; electron beam profile;

    Sammanfattning : Within research, synchrotron radiation is a highly useful probe for the study of materials, their properties and structures. Currently, no other radiation source allows the combination of high intensity and short wavelengths. LÄS MER