Sökning: "Yuan Li"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Yuan Li.

  1. 1. Evidence for adaptive variation at the genes coding for cytosolic phosphoglucose isomerase (PGIC) in Festuca ovina L

    Författare :Yuan Li; Biodiversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 3-D protein structure; purifying selection; positive selection; cDNA sequences; local adaptation; alvar grasslands; Festuca ovina; Phosphoglucose isomerase; PgiC loci; SNPs; nucleotide polymorphism; horizontal gene transfer;

    Sammanfattning : The gene (Pgi) encoding the enzyme phosphoglucose isomerase (PGI) which plays a central role in the main pathways of carbon metabolism has been shown to be of adaptive significance in a wide range of different species. Earlier studies of enzyme electromorph variation in the grass Festuca ovina suggest that variation in cytosolic PGI (PGIC) may be involved in the adaptive response of F. LÄS MER

  3. 2. Mathematical Models and Algorithms for Wireless Network Design and Optimization

    Författare :Yuan Li; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; max-min flow; directional antenna; optimization; integer programming; cellular backhaul network design; delay minimization; SINR; compatible set;

    Sammanfattning : Optimization techniques always play an important role in designing high-performance wireless systems. This presented thesis studies a selected set of optimization problems for different kinds of wireless networks, making use of mathematical programming techniques to find optimal solutions and of efficient heuristics to find near-optimal solutions. LÄS MER

  4. 3. Meiotic chromosome segregation : molecular analysis of the synaptonemal complex

    Författare :Li Yuan; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Meiosis is a special type of cell division that produces haploid gametes from diploid parental cells. As such, meiosis stands at the gateway to sexual reproduction in most eukaryotic organisms. During meiosis, a complex, but tightly coordinated series of events occur. Homologous chromosomes come together and pair along their entire length. LÄS MER

  5. 4. Genetic study of autosomal dominant progressive external ophthalmoplegia and familial myasthenia gravis : linkage analysis, candidate gene cloning and mutation detection

    Författare :Fang-Yuan Li; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Identification of genes responsible for familial human diseases is a major task of medical genetics. In this process, linkage analysis, candidate gene screening and mutation detection are the three major steps (Paper I-VI). LÄS MER

  7. 5. Thermal and Mechanical Behaviors of High Temperature Coatings

    Författare :Kang Yuan; Lin Peng Ru; Xin-Hai Li; Sten Johansson; Yan-dong Wang; Nicolaie Markocsan; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : With superior oxidation and corrosion resistance, metallic coatings (i.e. diffusion coatings and MCrAlX coatings) are widely used to protect hot components made of superalloys in turbine engines. LÄS MER