Sökning: "Theoretical chemistry"

Visar resultat 21 - 25 av 76 uppsatser innehållade orden Theoretical chemistry.

  1. 21. Hur begreppsanvändning kan påverka förskolebarns meningsskapande av kemiska fenomen : En kvalitativ observationsstudie om förskollärares och barns begreppsanvändning kring kemiska fenomen i ett kemiexperiment

    Uppsats för yrkesexamina på grundnivå,

    Författare :Minna Holi; [2021]
    Nyckelord :Chemistry; communication; preschool; preschool children; preschool teachers; science; Förskolebarn; förskollärare; kemi; kommunikation; naturvetenskap; förskola;

    Sammanfattning : The aim of the study is to increase knowledge about how preschool teachers' different ways of communicating about scientific phenomena provide different conditions for children to create meaning from the content of the experiment. The study is part of a theoretical framework based on phenomenography and the sociocultural perspective. LÄS MER

  3. 22. Prediktion - förutspår science fiction framtiden? : En jämförande analys av Frank Herberts Dune och Isaac Asimovs Foundation

    Kandidat-uppsats, Umeå universitet/Institutionen för kultur- och medievetenskaper

    Författare :Jesper Olsson; [2021]
    Nyckelord :Genre; Prediction; Science Fiction; Preunderstanding;

    Sammanfattning : Science fiction is a genre about extrapolating contemporary knowledge of the society we live in, in order to build imaginary, future societies in order to understand the consequences and evolution of our knowledge. In this work, I explore the predictive aspects of science fiction by making a comparative analysis between Frank Herbert's Dune and Isaac Asimov's Foundation. LÄS MER

  4. 23. Analysis of stellar spectra with machine learning

    Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Författare :Alvaro Segovia Otero; [2020]
    Nyckelord :Galactic Archaeology; machine learning; chemical abundances; FGK stars; Physics and Astronomy;

    Sammanfattning : Researchers in the field of Galactic Archaeology have entered the era of industrial revolution. Upcoming surveys are planning on observing tens of millions of stars and high precision and accuracy must be ensured when deriving their stellar parameters and elemental abundances. LÄS MER

  5. 24. An investigation of the interactions between clay nanoplatelets in the presence of monovalent and divalent salts, as well as cationic peptides utilising atomistic molecular dynamics

    Master-uppsats, Lunds universitet/Kemiska institutionen

    Författare :Mona Koder Hamid; [2020]
    Nyckelord :clay; molecular dynamics simulations; physical chemistry; fysikalisk kemi; theoretical chemistry; teoretisk kemi; Chemistry;

    Sammanfattning : Clays are negatively charged nanoplatelets with a layered silicate structure. It has been observed from small angle X-ray scattering measurements, and coarse-grained molecular dynamics simulations (CG-MD) that clay nanoplatelets are able to form stacks, known as tactoids, in the presence of divalent or multivalent counterions [8, 5]. LÄS MER

  7. 25. Theoretical study of anisotropic effects in crystal growth on the example of concrete and calcium oxalate monohydrate

    Master-uppsats, Lunds universitet/Kemiska institutionen

    Författare :Vilhelm Ekberg; [2019]
    Nyckelord :anisotropic crystal growth; COM; C-S-H; PM6; ReaxFF$_{ textrm{SiO}}$; organizing molecular matter; nanochemistry; nanokemi; Chemistry;

    Sammanfattning : While many crystals, both natural and artificial, grow isotropically, there are examples of crystals growing anisotropically. The aim of this theoretical study was to confirm the growth modes displayed by three different crystals, representing 3D, 2D and 1D structures. LÄS MER