Search for dissertations about: "A Roos"

Showing result 1 - 5 of 98 swedish dissertations containing the words A Roos.

2. 1. Manganese and Iron Heterodimers and Homodimers in Enzymes : Insights from Density Functional Theory

   Author : Katarina Roos; Per Siegbahn; Margareta R. A. Blomberg; Frank Neese; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Ribonucleotide reductase; manganese; iron; density functional theory; kemisk fysik; Chemical Physics;

   Abstract : The enzyme ribonucleotide reductase (RNR) catalyzes the reduction of ribonucleotides to deoxyribonucleotides, the building blocks of DNA, and is essential for all organisms. Canonical class I RNR R2 proteins use a diiron cofactor to generate a tyrosyl radical, which is required for catalysis. READ MORE

4. 2. Signs of Acquiring Bimodal Bilingualism Differently : A Longitudinal Case Study of Mediating a Deaf and a Hearing Twin in a Deaf Family

   Author : Emelie Cramér-Wolrath; Lise Roll-Pettersson; Eva Heimdahl-Mattson; Carin Roos; Marilyn Sass-Lehrer; Stockholms universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; bimodal bilingual acquisition; Swedish Sign Language; spoken Swedish; case study; longitudinal; sociocultural; mediation; interactional; twins; different hearing statuses; cochlear implant; tillägnande av bimodal bilingualitet; tvåspråkighet; svenskt teckenspråk; talad svenska; fallstudie; longitudinell; sociokulturell; mediering; interaktion; tvilling; hörselstatus; cochlea implantat; specialpedagogik; Special Education;

   Abstract : This dissertation based on a case study explores the acquisition and the guidance of Swedish Sign Language and spoken Swedish over a span of seven years. Interactions between a pair of fraternal twins, one deaf and one hearing, and their Deaf[1] family were video-observed within the home setting. READ MORE

5. 3. Studies of actinides in a superanoxic fjord

   Author : Per Roos; Lund Medicinsk strålningsfysik; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Geology; colloids.; TIMS; pore water; remobilisation; sediments; ultrafiltration; uranium; thorium; americium; plutonium; Anoxic; Framvaren; fjord; physical geography; Geologi; fysisk geografi;

   Abstract : Water column and sediment profiles of plutonium, americium, thorium and uranium have been obtained in the superanoxic Framvaren fjord, southern Norway. The concentrations of bomb test fallout Pu, Am as well as 'dissolved' Th in the bottom water are the highest recorded in the marine environment. READ MORE

6. 4. Partial Balayage and Related Concepts in Potential Theory

   Author : Joakim Roos; Henrik Shahgholian; Björn Gustafsson; Charles Smart; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Partial balayage; equilibrium measure; obstacle problem; divisible sandpile; Riemannian manifold; quadrature domain; Laplacian growth; mother body; Mathematics; Matematik;

   Abstract : This thesis consists of three papers, all treating various aspects of the operation partial balayage from potential theory.The first paper concerns the equilibrium measure in the setting of two dimensional weighted potential theory, an important measure arising in various mathematical areas, e.g. READ MORE

7. 5. Optimisation and Application of Intense High-Order Harmonic Pulses

   Author : Lena Roos; Atomfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Coherent radiation; Optimisation; Multiphoton ionisation; Phase matching; Physics; Fysik; Atomic and molecular physics; Atom- och molekylärfysik; Laserteknik; Laser technology; High-power lasers; Short pulses; High-order harmonic generation; Short wavelength; Fysicumarkivet A:2001:Roos;

   Abstract : The high-order harmonics that are created in the interaction between an intense laser pulse (around 1014 W/cm2) and a gas medium are studied. The high-order harmonic radiation is a relatively new source of coherent radiation in the short wavelength range. READ MORE