Search for dissertations about: "STACKING"

Showing result 1 - 5 of 139 swedish dissertations containing the word STACKING.

  1. 1. Studies on the Non-covalent Interactions (Stereoelectronics, Stacking and Hydrogen Bonding) in the Self-assembly of DNA and RNA

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Parag Acharya; Uppsala universitet.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bioorganic chemistry; nucleic acids; NMR; Stereoelectronic effects; Hydrogen Bonding; Stacking; Bioorganisk kemi; NATURAL SCIENCES Chemistry Organic chemistry Bioorganic chemistry; NATURVETENSKAP Kemi Organisk kemi Bioorganisk kemi;

    Abstract : This thesis is based on ten publications (Papers I-X). The phosphodiester backbone makes DNA or RNA to behave as polyelectrolyte, the pentose sugar gives the flexibility, and the aglycones promote the self-assembly or the ligand-binding process. READ MORE

  2. 2. Some Aspects of Physicochemical Properties of DNA and RNA

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Sandipta Acharya; Uppsala universitet.; [2006]
    Keywords : Bioorganic chemistry; nucleic acids; hydrogen-bonding; stacking; single-stranded; NMR; molecular dynamics; Bioorganisk kemi;

    Abstract : This thesis is based on nine research publications (I – IX) on structure and reactivity of RNA vis-à-vis DNA. The DNA and RNA are made of flexible pentose sugar units, polyelectrolytic phosphodiester backbone, and heterocyclic nucleobases. DNA stores our genetic code, whereas RNA is involved both in protein biosynthesis and catalysis. READ MORE

  3. 3. Physicochemical and Structural Aspects of Nucleic Acids

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Subhrangsu Chatterjee; Uppsala universitet.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; pKa; Hydrogen bonding; Stacking; NMR; MD; DNA; RNA; Pyrimidine; Organisk kemi;

    Abstract : This thesis consists of seven research publications concerning (i) pKa studies of nucleobases in model nucleotides to understand why RNA duplexes are more stable than DNA duplexes (Paper I), (ii) the role of Me(T)-π interactions in the relative stability of DNA-RNA heteroduplexes (Paper II), (iii) pKa measurements in nucleotides with different 2′-substituents (paper III), (iv) a conformation study of constrained sugars and a pKa study of 1-thyminyl to reveal effect of sugar constraints on the pKa of the nucleobase (paper IV), (v) NMR and MD studies of 1′, 2′-oxetane constrained thymidine incorporated Dickerson Drew dodecamer (paper V), (vi) the sequence dependent pKa perturbation of 9-guaninyl moeity in single stranded (ss) DNA and RNA (paper VI), (vii) the non identical chemical nature of internucleotidic phosphates in (ss) RNA using 31P NMR (paper VI), and an alkaline hydrolysis study of phosphodiesters in ssRNAs (paper VII). The architecture of DNA and RNA molecules is determined by (a) hydrogen bonding (b) base stacking (c) a variety of additional non-covalent interactions. READ MORE

  4. 4. Generalised stacking fault energy and plastic deformation of austenitic stainless steels

    University dissertation from KTH Royal Institute of Technology

    Author : Dávid Sándor Molnár; David Molnar; KTH.; Högskolan Dalarna.; [2018]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials Science and Engineering; Teknisk materialvetenskap; stacking fault energy; stainless steel; plasticity; deformation; ab initio; Steel Forming and Surface Engineering; Stålformning och ytteknik;

    Abstract : Austenitiska rostfria stål är främst kända för sin exceptionella korrosionsbeständighet. De har en ytcentrerad kubisk (FCC) struktur som stabiliseras genom att nickel tillsätts till Fe-Cr legeringen. Fe-Cr-Ni-systemet kan utökas ytterligare genom tillsats av andra element såsom Mn, Mo, N, C, etc. för att förbättra egenskaperna. READ MORE

  5. 5. Electronic structure of intrinsic stacking faults in silicon

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Niklas Lehto; Luleå tekniska universitet.; [1995]

    Abstract : .... READ MORE