Sökning: "Reversibility"

Visar resultat 1 - 5 av 60 avhandlingar innehållade ordet Reversibility.

  1. 1. Polyelectrolytes on Surfaces and their Complexes with Surfactants, Thermodynamics versus kinetics

    Författare :Yulia Samoshina; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysikalisk kemi; Polymer technology; Physical chemistry; SDS; amphiphilic polyelectrolytes; ellipsometry; reversibility; kinetics of adsorption; polyelectrolytes at solid-liquid interface; polyelectrolyte-oppositely charged surfactant complexes; biopolymers; Polymerteknik;

    Sammanfattning : The interfacial properties of polyelectrolytes, mainly cationic with various content of amphiphilic groups, and their complexes with an oppositely charged surfactant, sodium dodecyl sulfate (SDS), have been investigated using time-resolved ellipsometry. This thesis focuses on the kinetics and reversibility aspects of polymer adsorption and the control of the adsorption by regulating the electrostatic interactions. LÄS MER

  3. 2. Spatially Controlled Covalent Immobilization of Biomolecules on Silicon Surfaces

    Författare :Elisabeth Pavlovic; Sven Oscarsson; Marcus Textor; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biotechnology; silicon oxide; electrooxidation; sulfur; nanotechnology; self-assembled monolayers; atomic force microscopy; electron spectroscopy for chemical analysis; biomolecules; covalent immobilization; reversibility; Bioteknik; Bioengineering; Bioteknik;

    Sammanfattning : The work described in this thesis aims to achieving surface patterning through chemical activation of thiolated silicon oxide surfaces, resulting in a spatially controlled covalent immobilization of biomolecules with high resolution.Existing chemical methods to immobilize molecules on surfaces do not reach below the micrometer scale while the ones allowing for spatial control mostly lead to non-covalent adsorption of molecules on surfaces, or require several successive chemical reactions to obtain the final covalent immobilization. LÄS MER

  4. 3. From Penicillin Binding Proteins to Community Interventions : Mathematical and Statistical Models Related to Antibiotic Resistance

    Författare :Patricia Geli Rolfhamre; Åke Svensson; Mikael Andersson; Dan I. Andersson; Karl Ekdahl; Bruce R. Levin; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; antibiotic resistance; mathematical modeling; pharmacokinetics; pharmacodynamics; penicillin binding protein; postantibiotic effect; reversibility; selection; community intervention; Mathematical statistics; Matematisk statistik; matematisk statistik; Mathematical Statistics;

    Sammanfattning : Antibiotic resistance has become a major public health concern and mathematical models are important analytical tools for the understanding, evaluation and prediction of the resistance problem and related control strategies.The risk of emerging antibiotic resistance and selection has rarely been a concern in the design of antibiotic drug dosing regimens. LÄS MER

  5. 4. Functional and Modular As=C and P=C Group Motifs

    Författare :Daniel Morales Salazar; Andreas Orthaber; Jose Goicoechea; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; materials; physical chemistry; arsaalkenes; phosphaalkenes; DBU; fluorene; photochemistry; arsenic; phosphorus; carbon; hydrogen; sulfur; gold; copper; organic materials; organic electronics; molecular electronics; polymers; transition metal complexes; molecular materials; small molecule; hydrogen bonding; electrochemistry; cyclic voltammetry; chronoamperometry; electropolymerization; artificial intelligence; potentiodynamic; modularity; functionality; XPS; DFT; π-conjugation effects; 2D-NMR; disilenes; siliconoids; group motifs; functional group; emergence; reactivity; reactive systems; organometallic complexes; π-delocalization; low-coordinate; main group chemistry; heavy p-block elements; pnictogens; copper I complex; gold I complex; photosensitizer; XRD; spectroelectrochemistry; electrochromism; smart materials; synthesis; phosphaalkene ligands; imine ligands; hysteresis-like criteria; representative settings; optimal criteria; transient covalence; interactive image; conformer; isomer; ligand scrambling; nanomaterials; stimuli-responsive; optical properties; ligand design; molecular design; X-ray crystallography; emission; self-assembly; As=C; Si=Si; P=C; multiple bond; equilibrium; heteroalkenes; alkenes; reversibility; Raman; ATR-FTIR; ERDA; Kemi; Chemistry;

    Sammanfattning : This work focuses on the design, synthesis, characterization, and application projections of low-coordinated heavy pnictogen-containing (described by the generic letter E, hence E=C) phosphaalkenes (P=C) and arsaalkenes (As=C), with emphasis on the E=C group motifs. The work aims to understand their functional and modular character, reactivity, and potential applications by stabilizing, isolating, and characterizing these species in low-coordination environments. LÄS MER

  7. 5. Beröringens fenomenologi i vårdsammanhang

    Författare :Lise-Lotte Ozolins; Karin Dahlberg; Ulrica Hörberg; Gunn Engelsrud; Linnéuniversitetet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Care; Caring science; Lifeworld; Lived body; Phenomenology; Reversibility; Touch; Caring sciences; Vårdvetenskap; Vårdvetenskap; Caring Science;

    Sammanfattning : This thesis explores the phenomenon of touch and describes its meaning in the healthcare context. Caring science theory based on a lifeworld approach forms the theoretical perspective of the dissertation and consequently the patient perspective is guiding the research. LÄS MER