Sökning: "Citric acid"

Visar resultat 16 - 20 av 59 avhandlingar innehållade orden Citric acid.

1. 16. Root surface conditioning in periodontal treatment

   Författare :Johan Blomlöf; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :citric acid; collagen; EDTL; etching; monkey; periodontal healing; periodolntitis; phosphoric acid; root planing; scanning electron microscopy; smearlayer; ultrasonic scaling; vitality. ISBN: 91-628-2646-8;

   Sammanfattning : Marginal periodontal healing following both invasive and non-invasive therapies is influenced by a large number of systemic and local factors. In order to optimize healing, a lot of effort is put into minimizing possible sources of infection both in performing different periodontal therapies as well as during the healing period. LÄS MER

3. 17. Metal Release and Corrosion of Stainless Steel in Simulated Food Contact

   Författare :Neda Mazinanian; Inger Odnevall Wallinder; Ingrid Milosev; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kemi; Chemistry;

   Sammanfattning : Knowledge on metal release behaviour of stainless steels used in food processing applications and cooking utensils is essential within the framework of human health risk assessments. Recently, a new European test guideline (the CoE protocol) has been implemented to ensure safety of metals and alloys in food contact, such as stainless steels. LÄS MER

4. 18. Starch structures and their usefulness in the production of packaging materials

   Författare :Carolin Menzel; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Sammanfattning : Environmental concerns about increasing industrial use of plastics and the associated waste are raising the demand for renewable sources to replace petroleum-based products, especially in the packaging sector. This thesis examined the relationship between molecular structures of starch and their material properties in coating materials for food packaging. LÄS MER

5. 19. Colloidal Synthesis and Characterisation of (a) Na0.5K0.5NbO3 Thin Films; and (b) Functionalised Gd2O3 Nanocrystals

   Författare :Fredrik Söderlind; Per-Olov Käll; Lars Ojamäe; Linköpings universitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

   Sammanfattning : (a) Thin films of the perovskite structured Na0.5K0.5NbO3 (NKN) have been synthesised with several different sol-gel methods. Only one method gave pure NKN phase while the other methods gave extra peaks in the x-ray diffraction patterns, indicating that other, unidentified, phases were present. LÄS MER

7. 20. Recycling of nickel metal hydride (NiMH) batteries; Characterization and recovery of nickel, AB5 alloy and cobalt

   Författare :Filip Holmberg; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; recycling; nickel; AB5 alloy; cobalt; NiMH battery; hydrogen storage alloy; leaching;

   Sammanfattning : Nickel metal hydride (NiMH) batteries are used today for applications that can assist in the adaptation toward carbon-neutral energy sources (i.e. hybrid vehicles and smart grids). Recovery of metals such as nickel, cobalt and rare earth elements (REEs) from discarded NiMH batteries is important for economic and/or technological reasons. LÄS MER