Sökning: "4C"

Visar resultat 6 - 10 av 23 avhandlingar innehållade ordet 4C.

  1. 6. Aggregates in Concrete Mix Design

    Författare :Yahya Ghasemi; Mats Emborg; Andrzej Cwirzen; Martin Nilsson; Gram Hans-Erik; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mix design; water layer theory; particle packing; aggregates; specific surface area; Byggproduktion; Construction Engineering and Management;

    Sammanfattning : The importance of studying the behaviour and properties of concrete can be highlighted by considering the fact that concrete is the most used man-made material in the world. The very first step in making concrete is its mix design and deciding the type and amount of constitutes used in the production of concrete which should fulfil the requirements of the final product. LÄS MER

  3. 7. On the control of the microflora in the gastro intestinal tract : functional examples of antibacterial peptides from Helicobacter pylori and mouse small intestine

    Författare :Katrin Pütsep; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The human microflora contains at least 400 different species mainly localized to the gastro-intestinal tract. This indigenous flora is controlled by host factors as well as by the interference within the microbial community through the action of antimicrobial components. These components are in the focus of this thesis. LÄS MER

  4. 8. Identification of the domains of disulfide interaction in the mammalian ribosomal proteins L6 and L29

    Författare :Heinz Nika; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The 60-S subunits of mammalian ribosomes contain two adjacent proteins, identified as L6 and L29, which interact reversibly in situ by disulfide bond formation. The disulfide complex and the individual proteins were prepared by polyacrylamide gel electrophoresis under non-oxidizing conditions for effective prevention of methionine oxidation. LÄS MER

  5. 9. Epigenetic Regulation of Higher Order Chromatin Conformations and Gene Transcription

    Författare :Anita Göndör; Reinald Fundele; Thomas Graf; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Genomic imprinting; Chromatin; Epigenetics; Cancer; Developmental biology; Utvecklingsbiologi;

    Sammanfattning : Epigenetic states constitute heritable features of the chromatin to regulate when, where and how genes are expressed in the developing conceptus. A special case of epigenetic regulation, genomic imprinting, is defined as parent of origin-dependent monoallelic expression. LÄS MER

  7. 10. Formation of Bainite Studied by In-situ High-energy X-ray Diffraction

    Författare :Sen Lin; Peter Hedström; Annika Borgenstam; Sébastien Allain; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steel; Bainitic transformation; High-energy X-ray diffraction; Electron microscopy; Carbon diffusion; Thermodynamics and kinetics; Microstructure evolution; 高强钢; 贝氏体转变; 原位高能X射线衍射; 扫描与透射电子显微镜; 碳扩散; 热力学与动力学; 微观结构表征; Stål; Bainitiska fasomvandlingen; Högenergi-röntgendiffraktion; Elektronmikroskopi; Koldiffusion; Termodynamik och kinetik; Mikrostrukturutveckling; Materials Science and Engineering; Teknisk materialvetenskap;

    Sammanfattning :       Bainitic steels have attracted great attentions in recent years due to their excellent combination of properties to accommodate a wide range of applications. A deep and comprehensive understanding of how bainite forms is required to better design the production process and optimize the properties of bainitic steels. LÄS MER