Sökning: "molecular-weight"

Visar resultat 16 - 20 av 540 avhandlingar innehållade ordet molecular-weight.

  1. 16. Protein Modifications by Low Molecular Weight Chemicals Inducing Airways Diseases

    Författare :Marina Jeppsson; Avdelningen för arbets- och miljömedicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MSight; hemoglobin human serum albumin; nasal lavage; acrylates; organic acid anhydrides; persulfate; biomarkers adducts; mass spectrometry; MoDetect;

    Sammanfattning : Airways diseases are one of the most common health effects in the western world today. It has been shown that low molecular weight chemicals (LMWC) can cause airways diseases. The mechanisms for these diseases are not well known in most cases. Also, methods for biological monitoring of exposure are not available for many of these LMWC. LÄS MER

  3. 17. Flocculation with Polyelectrolytes in Latex and Microbial Systems

    Författare :Leif Eriksson; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; floc strength; shear sensitivity; fractal dimension; floc structure; patch flocculation; adhesion; bridging; flocculation; charge compensation; adsorption; ionic strength; molecular weight; charge density; Cationic polyelectrolytes; latex; bacteria; activ; Physical chemistry; Fysikalisk kemi;

    Sammanfattning : Adsorption of cationic polyelectrolytes onto polystyrene latices was studied as function of polymer chemical composition and molecular weight, polymer and surface charge density and ionic strength. The ratio between polymer charges and surface charges was close to one when distances between polymer and surface charges were equal. LÄS MER

  4. 18. Structure control by phase separation and influence on mass transport in films for controlled release

    Författare :Helene Andersson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Controlled release; Coating; Cellulose derivatives; Hydroxypropyl cellulose; Solvent evaporation; Ethyl cellulose; Phase separation; Polymer blend; Molecular weight;

    Sammanfattning : Controlled release coatings for oral pharmaceutics are often made of cellulose derivatives. Such coatings can be used to promote a prolonged therapeutic concentration in the blood by a slow drug delivery in the gastrointestinal tract. LÄS MER

  5. 19. Structure and properties of poly (3-alkyl thiophenes)

    Författare :Marie-Louise Lagerstedt-Eidrup; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; molecular weight; blends; thermal degradation; structure; interactions; miscibility; NMR; poly 3-alkyl thiophene ; chromism; Mark-Houwink; SEC;

    Sammanfattning : .... LÄS MER

  7. 20. Some aspects on the physical chemistry of kraft lignins in aqueous solutions : Theoretical considerations and practical implications

    Författare :Magnus Norgren; Mittuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; kraft pulping; kraft lignin; phenolic groups; dissociation; pKa; molecular weight; temperature; ionic strength; pOH; polydispersity; coagulation; Poisson-Boltzmann; DLVO; Chemistry; Kemi;

    Sammanfattning : .... LÄS MER