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Visar resultat 1 - 5 av 50 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Selectivity and gas composition in electrochemical systems by mass spectrometry

   Författare :Aleksandra Lindberg; Göran Lindbergh; Ann M. Cornell; Susanne Holmin; Thijs de Groot; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electrolysis; chlorate; selectivity; chromate; DSA; HER; OER; hypochlorite; ClER; catalysis; gases; NiMH battery; електролиза; хлорат; селективност; хромат; ДСА; реакција издвајања водоника; еволуција кисеоника; хипохлорат; еволуција хлора; катализа; гасови; NiMH батерије; elektrolys; klorat; selektivitet; kromat; DSA; vätgasutvecklingsreaktion; syrgasutvecklingsreaktion; hypoklorit; klorgasutvecklingsreaktion; katalys; gaser; NiMH batteri; Chemical Engineering; Kemiteknik;

   Sammanfattning : This doctoral thesis presents experimental studies of gaseous products of two electrochemical systems: the chlorate process and the nickel-metal hydride (NiMH) battery, employing mass spectrometry.The cathodic efficiency for the hydrogen evolution reaction (HER) of the chlorate process was investigated by employing ex-situ synthesized MnOx electrodes. LÄS MER

3. 2. Theoretical and Experimental Studies of Electrode and Electrolyte Processes in Industrial Electrosynthesis

   Författare :Rasmus Karlsson; Ann Cornell; Jan Rossmeisl; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Electrocatalysis; metallic oxides; ruthenium dioxide; titanium dioxide; DSA; doping; selectivity; ab initio modeling; density functional theory; Elektrokatalys; metalloxider; ruteniumdioxid; titandioxid; DSA; dopning; selektivitet; ab initio-modellering; täthetsfunktionalteori; Chemical Engineering; Kemiteknik;

   Sammanfattning : Heterogeneous electrocatalysis is the usage of solid materials to decrease the amount of energy needed to produce chemicals using electricity. It is of core importance for modern life, as it enables production of chemicals, such as chlorine gas and sodium chlorate, needed for e.g. materials and pharmaceuticals production. LÄS MER

4. 3. Arctic geographies in the making : understanding political economy, institutional strategic selectivity, and agency in tourism pathway development

   Författare :Dorothee Bohn; Doris A. Carson; Linda Lundmark; E. Carina H. Keskitalo; Dimitri Ioannides; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Arctic tourism; political economy; institutional strategic selectivity; agency; tourism pathways; uneven development; metagovernance; regional development funding; resort enclave; firm financing;

   Sammanfattning : Tourism has long been promoted as a catalyst for socio-economic development in sparsely populated areas based on the commodification of culture and natural environments. This thesis examines the case of Arctic tourism in the two neighbouring northern counties of Finnish Lapland and Norrbotten (Sweden). LÄS MER

5. 4. Novel monogalactoside galectin inhibitor scaffolds : Guiding selectivity with heteroaromatic interactions

   Författare :Alexander Dahlqvist; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Galectin; Galectin inhibitor; Heterocycles; C-glycoside; Medicinal chemistry; Organic chemistry; Hydroboration; Diastereoselective; Galactose;

   Sammanfattning : Carbohydrates are involved in many cellular processes, and most biomolecules are glycosylated. Thesemodifications are used in biological systems as information carriers, helping regulate organization on the cell surfaceand interactions between cells and the environment. LÄS MER

7. 5. Selectivity in Calcium mineral flotation - An analysis of novel an existing approaches

   Författare :Tommy Karlkvist; Bertil Pålsson; Hanumantha Rao Kota; Saija Luukkanen; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Froth flotation; Mineral processing; Adsorption; Mineral specific reagents; surfactant; Mineral Processing; Mineralteknik;

   Sammanfattning : .... LÄS MER