Sökning: "modification"

Visar resultat 1 - 5 av 1476 avhandlingar innehållade ordet modification.

  1. 1. Persian Orthography : Modification or Changeover? (1850-2000)

    Författare :Forogh Hashabeiky; Bo Utas; Carina Jahani; Éva Jeremiás; Uppsala universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Iranian languages; Persian; Persian orthography; Arabic alphabet; modification; changeover; romanization; orthographic conventions; bound and unbound writing; Iranska språk - allmänt; Iranska språk; Iranian Languages;

    Sammanfattning : The present study provides a description of the standardization process of Persian orthography since the introduction of the Arabic alphabet, with a focus on this process in modern times (1850-2000). Using theories related to orthography standardization as its background, this work seeks an explanation for the prolonged standardization process of Persian orthography, and presents the frameworks within which this standardization has been carried out. LÄS MER

  3. 2. Ribosomal RNA Modification Enzymes : Structural and functional studies of two methyltransferases for 23S rRNA modification in Escherichia coli

    Författare :Avinash S. Punekar; Maria Selmer; Martino Bolognesi; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Escherichia coli; ribosome biogenesis; ribosome assembly; ribosomal RNA; peptidyltransferase center; domain V; post-transcriptional modification; methyltransferases; S-adenosyl-methionine; RlmM; Cm2498; RlmJ; m6A2030; X-ray crystallography; substrate recognition; substrate specificity; catalytic mechanism; evolution; Biology with specialization in Structural Biology; Biologi med inriktning mot strukturbiologi; Biokemi; Biochemistry;

    Sammanfattning : Escherichia coli ribosomal RNA (rRNA) is post-transcriptionally modified by site-specific enzymes. The role of most modifications is not known and little is known about how these enzymes recognize their target substrates. LÄS MER

  4. 3. Nanolatexes: a versatile toolbox for cellulose modification

    Författare :Alexandros Efraim Alexakis; Eva Malmström; Justin Zoppe; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nanolatexes; RAFT; PISA; adsorption; cellulose; modification; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Cellulosic materials are widely used in our everyday lives, ranging from paperand packaging to biomedical applications. However, in most applications, cellulose must coexist with hydrophobic polymers which can be challenging due to its hydrophilic character. This has encouraged the exploration of chemical and physical modifications of cellulose. LÄS MER

  5. 4. Adenovirus for Cancer Therapy : With a Focus on its Surface Modification

    Författare :Di Yu; Magnus Essand; Dirk Nettelbeck; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Adenovirus; cancer; therapy; neuroblastoma; neuroendocrine; modification; Tat; PTD; cell penetrating peptide; Helicobacter pylori; NAP; Biology with specialization in Molecular Biology; Biologi med inriktning mot molekylärbiologi; Klinisk virologi; Clinical Virology; Medical Virology; Medicinsk virologi; Molekylär medicin; Molecular Medicine; Molekylär bioteknik; Molecular Biotechnology;

    Sammanfattning : Adenovirus serotype 5 (Ad5) is widely used as an oncolytic agent for cancer therapy. However, its infectivity is highly dependent on the expression level of coxsackievirus-adenovirus receptor (CAR) on the surface of tumor cells. LÄS MER

  7. 5. Isolation and chemical modification of arabinoxylan and galactoglucomannan

    Författare :Linda Härdelin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tg; Films; Material properties; Isolation; Etherification; Modification; PEGylation; Hemicellulose;

    Sammanfattning : Today’s society is based on the use of fossil fuels, where oil is used as transportation fuel and as raw material in the petrochemical industry. Efforts are made to increase the use of bio-based materials, since oil is a non-renewable source and a greenhouse gas contributor. LÄS MER