Search for dissertations about: "phase center"

Showing result 1 - 5 of 136 swedish dissertations containing the words phase center.

  1. 1. Structural Insights at Sub-Ångstrom, Medium and Low Resolution: Crystallization of Trypsin, Bacterioferritin, Photosynthetic Reaction Center, and Photosynthetic Core Complex

    Author : Weixiao Yuan Wahlgren; Göteborgs universitet.; Gothenburg University.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; protein crystallization; cubic phase; sponge phase; bicelle; trypsin; bacterioferritin; reaction center; core complex; photosynthesis;

    Abstract : The catalytic action of serine proteases depends on the interplay of a nucleophile, a general base and a general acid. The catalytic triad is composed of serine, histidine and aspartate residues. The serine acts as a nucleophile while the histidine plays a dual role as the general base or acid at different steps of the reaction. READ MORE

  2. 2. Low Noise Oscillator in ADPLL toward Direct-to-RF All-digital Polar Transmitter

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Jian Chen; KTH.; KTH.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; all-digital; digitally-intensive; frequency modualtion; phase modulation; amplitude modulation; polar; transmitter; oscillator; digital controled oscillator; DCO; VCO; voltage controled oscillator; class-C oscillator; class-D PA; ADPLL; phase noise; RF; CMOS.;

    Abstract : In recent years all-digital or digitally-intensive RF transmitters (TX) have attracted great attention in both literature and industry. The motivation is to implement RF circuits in a manner suiting advanced nanometer CMOS processes. To achieve that, information is encoded in the time-domain rather than voltage amplitude. READ MORE

  3. 3. Structural studies towards the understanding of biosynthesis of the lipopolysaccharide of Haemophilus influenzae

    University dissertation from Stockholm : Karolinska Institutet, Clinical Research Center

    Author : Anna Risberg; Karolinska Institutet.; Karolinska Institutet.; [1999]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Haemophilus influenzae; structural investigation; lipopolysaccharide LPS ; NMR and electrospray ionization mass spectrometry ESI-MS ;

    Abstract : The thesis Structural studies towards the understanding of biosynthesis of the lipopolysaccharide of Haemophilus influenzae involves structural investigation of LPS of four different H. influenzae strains, RM.118-28, RM.118, RM118-26 and RM. READ MORE

  4. 4. NMR Self-Diffusion Studies and Stability Studies of Emulsions

    University dissertation from Maj-Lis Larsson, Physical Chemistry 1, Center for Chemistry and Chemical Engineering, P.O. Box 124, S-22100 Lund, Sweden

    Author : Ingrid Lönnqvist; Lunds universitet.; Lund University.; [1996]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; coalescence; emulsion stability; size distribution; restricted diffusion; self-diffusion coefficient; self-diffusion PGSE NMR; surfactant; emulsifier; continuous phase; microemulsion; phase diagram; emulsion; multiple emulsion; cream; conductivity; Physics; Fysik; Chemistry; Kemi;

    Abstract : The aim of this study is to characterize emulsion systems by self-diffusion PGSE NMR methods. The specifics of the emulsions studied are all taken from the literature and they are of the W/O or O/W type stabilized with different emulsifiers. READ MORE

  5. 5. Isolation of caveolae using affinity two-phase partitioning

    University dissertation from Biochemistry, Center for Chemistry and Chemical Engineering, Lund University

    Author : Parisa Abedinpour; Lunds universitet.; Lund University.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; metabolism; Biokemi; Metabolism; Biochemistry; basolateral; apical; immunoaffinity; wheat germ agglutinin; caveolin; caveolae caveolae enriched fraction; plasma membranes; rat lung; rat liver; Affinity Partitioning; two-phase partitioning;

    Abstract : Popular Abstract in Swedish Målsättningen för detta arbete var att isolera caveolae för att kunna studera deras struktur och funktion. Caveolae är omegaformade inbuktningar i cellmembranet, ungefär 50-150 nm i diameter. Caveolae finns i många typer of celler, men inte i röda och vita blodkroppar eller nervceller. READ MORE