Sökning: "aqueous samples"

Visar resultat 11 - 15 av 109 avhandlingar innehållade orden aqueous samples.

  1. 11. Preparation and long-term performance of poly(ethylene-co-butyl acrylate) nanocomposites and polyethylene

    Författare :Sohail Nawaz; Ulf Gedde; Mikael Skrifvars; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymer nanocomposite; nanoparticles; aluminium oxide; poly ethylene-co-butyl acrylate ; long-term performance; ageing; antioxidant; OIT; aqueous media; silanization; irganox 1010; deltamethrin; piperonyl butoxide; chlorine dioxide; migration of stabilizer; SRA - Production; SRA - Produktion;

    Sammanfattning : The current study discusses the preparation and long-term performance of polymer composites used for various purposes under different ageing conditions.The first part deals with the preparation and characterization of polymer nanocomposites based on poly(ethylene-co-butyl acrylate) (EBA–13 and EBA–28 with 13 and 28 wt % butyl acrylate, respectively) and 2–12 wt % (0. LÄS MER

  3. 12. Molecular and epidemiological studies on eyes with pseudoexfoliation syndrome

    Författare :Amelie Botling Taube; Jonas Bergquist; Albert Alm; Eva Larsson; Hannu Uusitalo; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pseduoexfoliation syndrome; PEX; aqueous humor; cataract; cataract surgery; lens capsule; proteomics; mass spectrometry; MS; MALDI TOF MS MS; quantitative proteomics; iTRAQ; dimethyl labeling; imaging mass spectrometry; IMS; time of flight secondary ion mass spectrometry; TOF-SIMS; crystallin; epidemiology; risk factor; Ophtalmology; Oftalmiatrik;

    Sammanfattning : Pseudoexfoliation (PEX) syndrome is an age-related condition characterized by the production and accumulation of extracellular fibrillary material in the anterior segment of the eye. PEX predisposes for several pathological conditions, such as glaucoma and complications during and after cataract surgery. LÄS MER

  4. 13. Analytical method development for ultra-trace determination of human pharmaceuticals in aqueous samples. Assessing the performance of a sewage treatment plant

    Författare :Saioa Zorita; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; molecularly imprinted solid-phase extraction; Sample preparation; solid-phase extraction; membrane extraction; human pharmaceuticals; sewage treatment plant; steroid hormones;

    Sammanfattning : Research focus in environmental pollution has recently been extended from more classical environmental pollutants such as PCBs or pesticides to pharmaceuticals and steroid hormones, which are designed to be biologically active and enter the environment primarily through regular domestic use. Consequently, it is important to monitor these substances concentrations in the effluents of sewage treatment plants (STPs) and in the environment in order to evaluate their associated risks. LÄS MER

  5. 14. Molecular dynamics and aggregation behaviour in aqueous polymer-drug model systems

    Författare :Hans Evertsson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical chemistry; Farmaceutisk kemi; Pharmaceutical chemistry; Farmaceutisk kemi; Physical and Inorganic Pharmaceutical Chemistry; fysikalisk och oorganisk farmaceutisk kemi;

    Sammanfattning : Pharmaceutical formulations often contain polymers used as binders, swelling agents, etc., to give the formulation mechanical stability or specific drug release features. Many drug substances, as well as polymers, are amphiphilic which will give an associative polymer-drug interaction, affecting the dissolution rate and drug release. LÄS MER

  7. 15. Molecularly Imprinted Solid-Phase Extraction and Liquid Chromatography for Biological Samples

    Författare :Kristina Möller; Ulrika Nilsson; Maria Kempe; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; Analytisk kemi;

    Sammanfattning : This thesis focuses on the use of molecularly imprinted polymers as selective sorbents for solid-phase extraction (MISPE). The MISPE methods developed were mainly intended for use with biological samples, such as human urine and blood plasma. LÄS MER