Sökning: "artificial cell"

Visar resultat 21 - 25 av 185 avhandlingar innehållade orden artificial cell.

1. 21. Mechanisms and improvements of cell transplantation for nerve repair

   Författare :Kai-Hei Tse; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Mesenchymal stem cells; microporous scaffold; biomaterials; ischemia; cell death; brain derived neurotrophic factor;

   Sammanfattning : Trauma to the nervous system is a frequent clinical problem and new approaches to nerve repair are required. Autologous cell transplantation together with a suitable scaffold material could be used to create a bio-active artificial nerve graft to enhance regeneration. LÄS MER

3. 22. Single-Proton Irradiation of Living Cells - Development of New Tools for Low-Dose Radiation Research

   Författare :Natalia Arteaga; Kärnfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; lithography; UVL; EBL; SeACell; human hepatoma cells HepG2 ; reactive oxygen species ROS ; bystander effect; SU-8; cell recognition; cell irradiation; Single-Ion Hit Facility; low-dose; Fysicumarkivet A:2010:Arteaga Marrero;

   Sammanfattning : A Single-Ion Hit Facility (SIHF) consists of a custom-build facility based in particle accelerators which offers irradiation controlling the number of delivered particles with a precise targeting localization. The irradiation spot can be confined down to the nanometre scale allowing the irradiation of subcellular compartments with a single particle. LÄS MER

4. 23. Synthesis and binding studies of 9,10-disubstituted anthracene and dibenzobarrelene-based receptors for recognition of carbohydrates in water

   Författare :Hans Grundberg; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organisk kemi; 2- trimethylsilyl ethyl sulfide; diastereoselectivity; water; carbohydrates; recognition; biomimetic; Artificial; receptor; Organic chemistry;

   Sammanfattning : Artificial, amfiphilic, and biomimetic receptors soluble in water were synthesized via attaching polar amino acids to hydrophobic back-bones possessing a surface suitable for hydrophobic interactions. The hydrophobic back-bones chosen in this thesis were anthracene and dibenzobarrelene structures. LÄS MER

5. 24. Reaction and Diffusion Phenomena in Biomimetic Nanoscale Reactors and Networks

   Författare :Kristin Sott; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; artificial cell; restricted geometries.; enzymatic reactions; micromanipulation; biomimetic; nanotubes; diffusion; Vesicles; networks; liposomes;

   Sammanfattning : Methods for construction of geometrically complex, fully connected surface-immobilized microscopic networks of phospholipid bilayer vesicles (1-50 µm in diameter) interconnected by lipid nanotubes (100-300 nm in diameter), have been developed. The networks have controlled connectivity and are well-defined with regard to the container size, content, angle between nanotube extensions, and nanotube length. LÄS MER

7. 25. Creating Ultrafast Biosensors for Neuroscience

   Författare :Yuanmo Wang; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; quantification; glucose; choline oxidase; gold nanoparticles; enzyme monolayer; enzymatic activity; Biosensor; adsorption; brain slice; enzyme stability; acetylcholine esterase; artificial cell; exocytosis; glucose oxidase; deformation; glutamate; glutamate oxidase; acetylcholine; amperometry;

   Sammanfattning : Neuronal communication is the basis for all our brain function and relies on regulated exocytosis, a cell function that involves release of quantal amounts of neurotransmitters into the gap space between interconnected neurons to serve as chemical signals. To study exocytosis, which is a fast process that occurs on the timescale of sub-milliseconds to milliseconds, a toolbox of analytical methods has been developed where the electrochemical based techniques offer quantitative and sufficient high temporal recording speed. LÄS MER