Search for dissertations about: "Y. Zhang"

Showing result 1 - 5 of 8 swedish dissertations containing the words Y. Zhang.

  2. 1. Genomic studies of sex differences : On mutations, recombination, and sexual antagonism in songbirds

    Author : Hongkai Zhang; MEMEG; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; sex differences; mutation; recombination; sexual conflict; sexual antagonism; sexually antagonistic selection; Great reed warbler; Acrocephalus arundinaceus;

    Abstract : Many organisms have separate sexes, i.e., males and females. The presence of separate sexes causes sex-specific selection regimes and sexual antagonism, which can lead to sex differences in morphology, physiology, and behaviours. READ MORE

  4. 2. Basal lamina genes affected in leiomyomatosis and congenital muscular dystrophy : structure and mutation analyses of the collagen COL4A6 and laminin LAMA2 genes

    Author : Xu Zhang; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Basal laminae (basement membranes) are flexible thin sheets of specialized extracellular matrix separating organ cells from the underlying or surrounding connective tissues. They are found beneath epithelial and endothelial cells amd surrounding different cells, such as muscle fibers and nerves. READ MORE

  5. 3. T lymphocytes and cytokines in the pathogenesis of experimental autoimmune myasthenia gravis

    Author : Guang-Xian Zhang; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Experimental autoimmune myasthenia gravis (EAMG), induced in different animal species and strains by immunization with nicotinic acetylcholine receptor (AChR) and complete Freund's adjuvant (CFA), represents an experimental model of myasthenia gravis (MG) in humans. Both MG and EAMG are autoimmune diseases mediated by antibodies against AChR of neuromuscular junctions. READ MORE

  6. 4. Middle ordovician conodonts from the Atlantic faunal region and the evolution of key conodont genera

    Author : Jianhua Zhang; Anita Löfgren; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Conodonts; Middle Ordovician; Biostratigraphy and lithofacies; Evolution; Atlantic Faunal Region; Earth sciences; Geovetenskap; allmän och historisk geologi; General and Historical Geology;

    Abstract : This thesis consists of seven separate articles that are mainly concerned with Middle Ordovician conodonts. The studied conodont specimens were obtained from three Middle Ordovician sections in south China and four Middle Ordovician sections in Sweden. READ MORE

  7. 5. Performance of MCrAlX coatings : Oxidation, Hot corrosion and Interdiffusion

    Author : Pimin Zhang; Ru Lin Peng; Xin-Hai Li; Sten Johansson; Ping Xiao; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : MCrAlY coatings (M=Ni and/or Co) are widely used for the protection of superalloy components against oxidation and hot corrosion in the hot sections of gas turbines. The drive for coating systems to bestow adequate oxidation and corrosion resistance upon the components becomes urgent as an inevitable result of the necessary improvement in engine combustion efficiency and service lifetime. READ MORE