Essays about: "vibrational"

Showing result 21 - 25 of 67 essays containing the word vibrational.

  1. 21. Charging behaviour of the amine moiety at the air-water interface. A vibrational sum frequency study

    University essay from KTH/Yt- och korrosionsvetenskap

    Author : Mikael Gullstrand; [2021]
    Keywords : Langmuir monolayers; Vibrational Sum Frequency Spectroscopy; Fatty amine; Monovalent ions; Poisson Boltzmann theory; Langmuirmonolager; Vibrationssumfrekvensspektroskopi; Fettkedjeamin; Monovalenta joner; Poisson-Boltzmann-teori;

    Abstract : Laddningsbeteendet hos amingruppen vid ytgränsskiktet mellan vatten och luft har studerats under ändring av vattenfasens pH och NaCl-koncentration via den ickelinjära laserspektroskopiska tekniken, vibrationssumfrekvensspektroskopi (VSFS). Modellen som användes för ytan bestod av ett Langmuirmonolager av 1-docosanamin, en icke-löslig fettkedjeamin med NH2-gruppen riktad mot vattenfasen. READ MORE

  3. 22. Molecular insight into ion interactions at charged interfaces exposing sulfonate headgroups

    University essay from KTH/Yt- och korrosionsvetenskap

    Author : Hugo Widehammar; [2021]
    Keywords : Langmuir monolayers; Vibrational Sum Frequency Spectroscopy; Fatty sulfonic acid; Monovalent ions; Poisson Boltzmann theory; Langmuir monolager; vibrations sumfrekvens spektroskopi; fettsulfonsyra; monovalenta joner; Poisson Boltzmann teori;

    Abstract : Hur elektrolytlösningar interagerar med laddade ytor är viktigt för många fenomen. I detta arbete undersöktes samspelet mellan flera joner med en negativt laddad yta som exponerade sulfonat funktionella grupper mot lösning. Särskild vikt lades på deprotoneringsbeteendet vid ytan. READ MORE

  4. 23. Vibrational prediction of a waste water pump

    University essay from KTH/Hållfasthetslära

    Author : Daniel Sundström; [2020]
    Keywords : ;

    Abstract : An off-market waste water pump is suspected to have high vibrational velocity levels. These vibrations are sought after at the outer surface located at the upper bearing position of the pump. It has then become of interest for trying to predict these vibrations by using the commercial FEA software COMSOL. READ MORE

  5. 24. Modelling of the vibrational behavior of housing plates filled with fibrous material

    University essay from KTH/Marcus Wallenberg Laboratoriet MWL

    Author : Da Cao; [2020]
    Keywords : ;

    Abstract : Silencers are used in vehicles to reduce the noise in the engine system. However,silencers themselves may produce break-out noise due to the interactionwith the exhaust gas ow and structure. In this Master thesis project, thenumerical simulation of vibrational behavior of housing plates of silencers isdeveloped. READ MORE

  6. 25. Toward a Novel Gas Cell for X-Ray Spectroscopy : Finite Element Flow Simulation and Raman Characterization

    University essay from Uppsala universitet/Molekyl- och kondenserade materiens fysik

    Author : Fredrik Stångberg Valgeborg; [2019]
    Keywords : gas cell; finite element analysis; finite element method; gas flow simulation; x-ray spectroscopy; RIXS; MAX IV; VERITAS; synchrotron;

    Abstract : The new millennium has seen revolutionary advances in photonsource technology. As the newly constructed synchrotron facilityMAX IV in Lund, Sweden, pushes brilliance toward what isphysically possible, low-yield spectroscopic techniques, such asresonant inelastic X-ray scattering (RIXS), open new doors inmolecular and condensed matter research. READ MORE