Sökning: "acetonitrile medium"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden acetonitrile medium.

  1. 1. Influence of Internal Diffusional Limitations on the Performance of an Immobilized Enzyme in Organic Medium

    Författare :Raúl J Barros; Bioteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biotechnology; internal diffusional; acetonitrile medium; Immobilized a-chymotrypsin; kinetically controlled peptide synthesis; Bioteknik;

    Sammanfattning : The influence of mass-transfer limitations on the performance of immobilized a-chymotrypsin operating in acetonitrile medium has been investigated. The enzyme was immobilized by deposition on various porous carrier materials such as celite, polyamides of different particle sizes, controlled-pore glasses, polypropylene or polyacrylamides. LÄS MER

  3. 2. Overcoming the Mass Transport Limitations of Dye-Sensitised Solar Cells : Towards highly efficient and robust alternative redox mediator electrolyte DSSCs

    Författare :Roger Jiang; Gerrit Boschloo; Erik Johansson; Anders Hagfeldt; Frédéric Sauvage; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dye-sensitised solar cell; dye-sensitized solar cell; photoelectrochemical cell; cobalt tris bipyridine ; mass transport; photocurrent transients;

    Sammanfattning : Dye-sensitised solar cells (DSSCs) have been subject to decadelong research interest, and may have some potential niche market applications. Recently, major advances in power conversion efficiencies have been achieved following the transition to cobalt polypyridine based redox mediators. LÄS MER

  4. 3. Studies in Molecular Astrophysics and Astrobiology

    Författare :Eva Wirström; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Submillimeter; Radio lines: ISM; Astrobiology; ISM: individual objects: Orion KL; Molecular data; ISM: molecules;

    Sammanfattning : The molecules of the interstellar medium (ISM) can be used as probes of the physical conditions in a range of different types of interstellar environment, for example star forming regions. The first chapters of this thesis describe the theory and the observational techniques used to study the rotational transition emission from, and the present knowledge of, these molecules. LÄS MER

  5. 4. Remediation of TNT-contaminated water by using industrial low-cost residue pine bark

    Författare :Olga Chusova; Emma Nehrenheim; Monica Odlare; Jaquiline Akhavan; Mälardalens högskola; []
    Nyckelord :Energy- and Environmental Engineering; energi- och miljöteknik;

    Sammanfattning : In the process of demilitarization of explosives, army ammunition plants generate a waste stream known as pink water. The principal component of the wastewater is the nitro-aromatic compound 2,4,6-trinitrotoluene (TNT). LÄS MER

  7. 5. Selectivity and sensitivity in supercritical fluid and liquid chromatography, using capillary columns and microelectrochemical detection

    Författare :Susanne R. Wallenborg; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; Chemistry; Kemi; Analytical Chemistry; analytisk kemi;

    Sammanfattning : The obtainable selectivity of capillary column supercritical fluid chromatography wasstudied by the direct and indirect enantiomeric separation of some medium polarcompounds, i.e., benzodiazepines. LÄS MER