Essays about: "hydrogen line"

Showing result 21 - 25 of 39 essays containing the words hydrogen line.

  1. 21. Ray Tracing and Spectral Modelling of Excited Hydroxyl Radiation from Cryogenic Flames in Rocket Combustion Chambers

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Jaka Perovšek; [2018]
    Keywords : spectral modelling; excited hydroxyl radiation; OH* radiation; ray tracing; spectroscopy; rocket combustion chambers; rocket engines; hydrogen-oxygen combustion; combustion instabilities;

    Abstract : A visualisation procedure was developed which predicts excited hydroxyl (OH*) radiation from the Computational Fluid Dynamics (CFD) solutions of cryogenic hydrogen-oxygen rocket flames. The model of backward ray tracing through inhomogeneous media with a continuously changing refractive index was implemented. READ MORE

  3. 22. Broadening of spectral lines in the Gaia-ESO survey

    University essay from Uppsala universitet/Teoretisk fysik

    Author : Kristoffer Bengtsson; [2018]
    Keywords : Astronomy; Hydrogen; Iron; Spectral line broadening; collisional broadening; pressure broadening; Gaia; Stellar atmosphere; spectrum; stars: abundances; Atomic data; Astronomi; tryckbreddning; kollisionsbreddning; breddning av spektrallinjer; spektrum; väte; järn; Gaia; stjärnatmosfär; atomdata;

    Abstract : Analyzing stellar spectra plays a big role in understanding the evolution of our galaxy. Having good data for spectral line properties is very important when analyzing these spectra. One part of the Gaia-ESO public spectroscopic survey (GES) is to gather data for spectral line properties from stellar spectra. READ MORE

  4. 23. Cosmic Dawn in a Fuzzy Universe : Constraining the nature of Dark Matterwith 21 cm Cosmology

    University essay from Stockholms universitet/Institutionen för astronomi

    Author : Olof Nebrin; [2017]
    Keywords : ;

    Abstract : The cold dark matter (CDM) paradigm underlying the standard CDM model of cosmology is successful on large scales but faces potential problems on small scales partly related to a seeming overproduction of dwarf galaxies. This could be alleviated in exotic dark matter models that suppresses small-scale structure formation. READ MORE

  5. 24. The effect of barley on glucose regulation, appetite and colonic fermentation in middle aged subjects

    University essay from Lunds universitet/Livsmedelsteknik och nutrition (master)

    Author : Jananee Muralidharan; [2017]
    Keywords : Food science; barley; gut microbiota; nutrition; Agriculture and Food Sciences;

    Abstract : Use of wholegrain foods has shown importance in terms of prevention of obesity and related comorbidities. Positive metabolic effects of wholegrain barley have been investigated with this regard. READ MORE

  6. 25. A Data Acquisition Board Firmware for Pellet Tracking System

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Filza Saleem; [2017]
    Keywords : ;

    Abstract : The PANDA experiment requires precise information about the target position in the beam [3]. The target in form of frozen hydrogen 30um droplets called “pellets” moving at a speed of 60m/s is tracked by a system consisting of 8 line scan CCD cameras sending data to “Camera Link Boards”, where the data are merged and sent further to a data acquisition system for storage and subsequent analysis [15]. READ MORE