Sökning: "permeability transition"

Visar resultat 6 - 10 av 43 avhandlingar innehållade orden permeability transition.

  1. 6. Material Properties of Starch and Cereal Protein Films and Foams

    Författare :Thomas Gillgren; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; foam; avenin; oxygen permeability; amylopectin; water vapour permeability; plasticization; mechanical properties; zein; film; glass transition temperature; kafirin; prolamin; cereal protein; amylose; starch;

    Sammanfattning : Materials that are renewable and biodegradable are demanded for environmental reasons. Biopolymeric materials, such as materials from starch and cereal proteins, are both renewable and biodegradable. However, starch and cereal protein materials are generally rather brittle and therefore need to be plasticized to become more flexible. LÄS MER

  3. 7. Diffusion in cationic vesicle and micellar solutions- a NMR study

    Författare :Cecilia Groth; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; vesicles; Stopped-flow; micellar kinetics; water transport; DSC; Gemini surfactant; permeability; NOESY; Cationic surfactant; NMR diffusometry; extrusion;

    Sammanfattning : Double tailed cationic surfactants are the active component in softeners. In the beginning of the 90s the active component in softener formulations was changed from a hydrolytically stable dialkyl dimethyl ammonium chloride (dialkyl quat) to a cleavable and biodegradable product containing ester groups in the alkyl chains (dialkyl ester quat). LÄS MER

  4. 8. Development of the gastrointestinal tract in young mammals : Effects of enteral provocation with protease or phytohaemagglutinin in neonatal rats

    Författare :Ester Arevalo Sureda; Funktionell zoologi; []
    Nyckelord :gut; Intestine; Pancreas; development; precocious; protease; PHA; enterocytes; permeability; endocytosis; IgG; FcRn; Blimp1; T-lymphocyte; passive immunity; altricial; neonatal; suckling; athymic; rat; immunohistochemistry IHC ;

    Sammanfattning : The rat, as an altritial species, is born with an immature gastrointestinal tract and intestinal barrier function, which is highly absorptive to milk-borne bioactive molecules that can pass undigested and reach the general circulation of the suckling newborn. This passage occurs by the neonatal-Fc-receptor (FcRn) binding and trancytosis of immunoglobulin G in the proximal small intestine (SI) and by the highly endocytic vacuolated enterocytes non-selectively in the distal SI. LÄS MER

  5. 9. Cellular and molecular mechanisms of ischemic brain damage in hyperglycemic rats

    Författare :Hiroyuki Uchino; Lund Wallenberg Neurocentrum; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Reperfusion injury; Mitochondria; Permeability transition; Cyclosporin A; Neurotrophins; Seizures; Brain damage; Acidosis; Hypercapnia; Ischemia; Hyperglycemia; Neurology; neuropsychology; neurophysiology; Neurologi; neuropsykologi; neurofysiologi;

    Sammanfattning : The present study is centered on mechanisms of ischemic brain damage in hyperglycemic animals, and in those in which exaggerated intraischemic acidosis was induced by superimposed hypercapnia in normoglycemic animals. The initial experiments were focussed on the pathophysiology of postischemic seizures. LÄS MER

  7. 10. Hypoxic-ischemic injury in the immature brain. Role of mitochondria, caspases and NMDA receptors

    Författare :Malgorzata Puka-Sundvall; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; neonatal; immature rats; hypoxia-ischemia; brain damage; calcium; mitochondria; permeability transition; apoptosis; caspase-3; NMDA receptor; electron microscopy;

    Sammanfattning : .... LÄS MER