Sökning: "carbonate ions"

Visar resultat 1 - 5 av 39 avhandlingar innehållade orden carbonate ions.

  1. 1. Carbonate Ions and Gastric Cancer

    Författare :Roy Ehrnström; Malmö Patologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICAL AND HEALTH SCIENCES; Medicine human and vertebrates ; ODC; COX-2; inflammation; Wistar rats; duodenogastric reflux; Medicin människa och djur ; proliferation; gastrojejunostomy; carbonate ions; Experimental gastric cancer;

    Sammanfattning : Nearly one million new cases of gastric cancer are diagnosed annually throughout the world. Even though the incidence has fallen dramatically in recent decades, this disease is still the second leading cause of cancer death in a global perspective. LÄS MER

  2. 2. Calcium Carbonate Precipitation in Presence of Carboxylic Acids

    Författare :Karl-Johan Westin; KTH; []
    Nyckelord :calcium carbonate; precipitation; crystallization; carboxylic acids;

    Sammanfattning : With a metal removal process based on precipitation aimed atthe purification of pulping effluent as a starting point, theinfluence of carboxylic acids on calcium carbonateprecipitation has been studied. The chosen carboxylic acids canact as more or less strong complexing agents for aqueouscalcium, just as many compounds found in pulping liquors. LÄS MER

  3. 3. On the solubility of radium sulfate and carbonate

    Författare :Artem Matyskin; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES; dissolution; thermodynamics; radium sulfate; radium carbonate; solubility product; precipitation;

    Sammanfattning : Radium is one of the most toxic elements and its concentration in different human activities and migration from man-made wastes provokes a strong interest in environmental science. To be able to model the migration process, reliable experimental thermodynamic data of radium compounds are needed. LÄS MER

  4. 4. Biodegradable Surfactants Containing Hydrolyzable Bonds

    Författare :Maria Stjerndahl; Chalmers University of Technology; []
    Nyckelord :amide; alkaline hydrolysis; cleavable surfactant; carbonate; ester; biodegradation; CMC; enzymatic hydrolysis; mixed micelle;

    Sammanfattning : Surfactants with built-in weak bonds, so-called cleavable surfactants, are interesting candidates in the search for more environmentally friendly alternatives to traditional surfactants. The objective of this thesis was to perform a systematic study in which cleavable surfactants with different hydrolyzable bonds were compared with regard to physicochemical properties, and chemical and biological stability. LÄS MER

  5. 5. New Materials for the Molten Carbonate Fuel Cell

    Författare :Sara Randström; Carina Lagergren; Michel Cassir; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Molten Carbonate Fuel Cell; Anode current collector; Cathode; Wet-seal; Ionic liquid; TFSI; Smältkarbonatbränslecell; Anodströmtilledare; Katod; Wet-seal; Jonvätska; TFSI; Electrochemistry; Elektrokemi;

    Sammanfattning : Smältkarbonatbränslecellen (MCFC) är en högtemperaturbränslecell för stationära applikationer. Den har samma höga totalverkningsgrad som konventionella kraftvärme-anläggningar, men kan byggas i mindre moduler (från 250 kWe). LÄS MER