Sökning: "UDP"
Visar resultat 6 - 10 av 51 avhandlingar innehållade ordet UDP.
6. A Cross-Layer Perspective on Transport Protocol Performance in Wireless Networks
Sammanfattning : Communication by wireless technologies has seen a tremendous growth in the last decades. Mobile phone technology and wireless broadband solutions are rapidly replacing the last-hop wireline connectivity for telephones and Internet access. LÄS MER
7. Studies on the Role of UDP-Glucose Dehydrogenase in Polysaccharide Biosynthesis
Sammanfattning : Polysaccharides are found in all forms of life and serve diverse purposes. They are enzymatically synthesised from activated monosaccharide precursors, nucleotide sugars. One such nucleotide sugar is UDP-glucuronic acid, which is formed from UDP-glucose by the UDP-glucose dehydrogenase (UGDH) enzyme. LÄS MER
8. Vascular effects of neuropeptides and UDP-β-S and alterations after stroke
Sammanfattning : The aim of this thesis is to investigate the changes in vasoactive intestinal peptide (VIP) and calcitonin gene-related peptide(CGRP) and P2Y6-mediated signaling following experimental subarachnoid hemorrhage (SAH) and transient middle cerebral artery occlusion (tMCAO). VIP and CGRP are among the most powerful vasodilators known to man while P2Y6 mediates strong vasoconstriction in cerebral blood vessels. LÄS MER
9. Molecular consequences of cellular UDP-glucose deficiency
Sammanfattning : A Chinese hamster fibroblast mutant cell line, deficient in UDP-glucose (UDPG), denoted as Qc, and its counterpart cell line with normalized levels of UDPG (G3), were used to determine some molecular consequences of chronic UDPG deficiency. The UDPG deficient cells lacked glycogen, had elevated rates of glucose uptake and a decreased capacity to synthesize glycogen after 120h of culture. LÄS MER
10. Enzymes involved in heparan sulfate chain elongation : Function of a novel family of tumor suppressors?
Sammanfattning : Heparan sulfate (HS) is a glycosaminoglycan associated with many physiological functions such as regulation of growth factor action and cell adhesion. The HS polysaccharide is synthesized by alternating addition of D-glucuronic acid (GlcA) and N-acetyl-D-glucosamine (GlcNAc) units from the corresponding UDP-sugar precursors. LÄS MER