Sökning: "Kristina Jonas"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden Kristina Jonas.

  1. 1. Coping with Stress : Regulation of the Caulobacter crescentus cell cycle in response to environmental cues

    Författare :Kristina Heinrich; Kristina Jonas; Emanuele Biondi; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Caulobacter crescentus; bacteria; cell cycle; stress; filamentation; cell morphology; DNA replication; cell division; molekylär biovetenskap; Molecular Bioscience;

    Sammanfattning : All organisms have to respond to environmental changes to maintain cellular and genome integrity. In particular, unicellular organisms like bacteria must be able to analyze their surroundings and rapidly adjust their growth mode and cell cycle program in response to environmental changes, such as changes in nutrient availability, temperature, osmolarity, or pH. LÄS MER

  3. 2. Signalling pathways controlling bacterial adaptation

    Författare :Kristina Jonas; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The conversion of environmental signals into cellular responses is a critically important process that occurs in all organisms. The ability to process information depends, in general, on complex signal transduction and regulatory networks that control genes required to cope with certain environmental conditions. LÄS MER

  4. 3. Corrosion and Surface Studies of Stainless Steel and Chromium Carbide Thin-Films

    Författare :Jonas Högström; Leif Nyholm; Kristina Edström; Patrik Schmutz; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; corrosion; electrochemistry; thin film; stainless steel; passive film; chromium carbide; carbon oxidation; surface; depth profile; XPS; SEM; EQCM; sputtering;

    Sammanfattning : Although the passive films that form on stainless steels have been extensively studied, the concentration depth profiles are not fully understood. Their thinness makes passive films hard to study, but angle-resolved X-ray photoelectron spectroscopy (ARXPS) is a non-destructive technique that can be used to obtain depth information. LÄS MER

  5. 4. Social rörlighet i en socialt rörig tid : Eleverna och deras utbildning vid Brunnsvik, Väddö och Hola folkhögskolor, 1906–1921

    Författare :Jonas Söderqvist; Fredrik Sandgren; Kristina Lilja; Dan Bäcklund; Peter Gladoic Håkansson; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; social mobility; history of education; popular movements; folk high school; Swedish labour movement; prosopography; Brunnsvik; social rörlighet; folkrörelser; folkhögskolor; Brunnsvik; Hola; Väddö; arbetarrörelse; kollektivbiografi; nykterhetsrörelse; Ekonomisk historia; Economic History;

    Sammanfattning : In Sweden during the late 1800s, access to secondary education was not attainable for everyone. The school system separated pupils with parents who could afford to pay for tuition and boarding from those that came from less resourceful backgrounds.However, in a society in the throes of industrialization, this system was rapidly changing. LÄS MER

  7. 5. Regulated Proteolysis: The Secrets of Lon : Cellular Roles and Stress-dependent Regulation of the Lon Protease

    Författare :Matthias J. Fink; Kristina Jonas; Axel Mogk; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Lon protease; regulated proteolysis; allosteric regulation; Caulobacter crescentus; stress responses; molekylär biovetenskap; Molecular Bioscience;

    Sammanfattning : Proteolysis is crucial in cells to maintain a functional proteome. It is required for removal of damaged and unfolded proteins during protein quality control, and serves as a mechanism to regulate protein levels through regulated proteolysis. LÄS MER