Sökning: "calcium phosphates"

Visar resultat 6 - 10 av 23 avhandlingar innehållade orden calcium phosphates.

1. 6. Structural and solid state EMF studies of phases in the CaO–K2O–P2O5 system with relevance for biomass combustion

   Författare :Malin Sandström; Dan Boström; Anders Nordin; Bo Björkman; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; calcium potassium phosphates; structural studies; Gibbs standard energy of formation; EMF measurements; biomass; combustion; chemical equilibrium model calculations; Inorganic chemistry; Oorganisk kemi;

   Sammanfattning : Fosfaters reaktioner i energiomvandlingsprocesser är kritisk för den generella processen som helhet, för askrelaterade problem, emissioner liksom för en effektiv och hållbar användning av askan.Denna avhandling är en sammanställning och diskussion med utgångspunkt i åtta artiklar som behandlar strukturella och termodynamiska studier på faser i CaO-K2O-P2O5-systemet, vilka är av relevans inom förbränning av biomassa. LÄS MER

3. 7. Nanostructured Ceramics - Synthesis and Understanding

   Författare :Farnaz Ghajeri; Wei Xia; Freddy Kleitz; Uppsala universitet; []
   Nyckelord :Material Science; Nanoporouse Silica; Calcium Phosphate; Synthesis; Characterization; Adsorption; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

   Sammanfattning : During the last years, nanostructured ceramics have been favored for use in the industry due to their beneficial properties. For example, calcium phosphate ceramics with their biocompatible and bioactive characteristics are beneficial in biomedicine. LÄS MER

4. 8. Factors Influencing Phytate Degradation in Piglets. Feed phytate behaviour and degradation by microbial phytases

   Författare :Katrine Pontoppidan; Chalmers tekniska högskola; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; pigs; in vitro digestion; P. lycii; inositol phosphates; phytate; phytase;

   Sammanfattning : Phytate, the main storage form of phosphorus (P) in plant feedstuffs, is indigestible for monogastric animals, and phytases are therefore used as feed additives to increase the digestibility of phytate-P and limit the inclusion of inorganic P. However, new and improved phytases are needed to obtain better phytate digestibility and allow for lower inclusions of inorganic P. LÄS MER

5. 9. The biological and physical performance of high strength dicalcium phosphate cement in physiologically relevant models

   Författare :Michael Pujari-Palmer; Håkan Engqvist; Marjam Karlsson Ott; Christele Combes; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biomaterial; bioceramic; osteoinduction; calcium phosphate; cement; osteoblast; pyrophosphate; Rebamipide; drug delivery; screw augmentation; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

   Sammanfattning : The chemical properties of calcium phosphate cements (CPCs) are very similar to the mineral phase of bone. CPCs are, consequently, very effective substrates (scaffolds) for tissue engineering; bone and stem cells attach readily, and can proliferate and differentiate to form new bone tissue. LÄS MER

7. 10. Ceramic Core–Shell Particles : Synthesis and Use within Dentistry

   Författare :Camilla Berg; Wei Xia; Håkan Engqvist; Nicola Döbelin; Uppsala universitet; []
   Nyckelord :Calcium phosphate; Core-shell particles; Substituting ions; Dentin hypersensitivity; Occlusion; Mineralization; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

   Sammanfattning : Dentin hypersensitivity is one of the most prevalent conditions related to oral health, affecting a large share of the adult population. Shortcomings with the available treatment options are related to non-ideal particle sizes and degradation properties. LÄS MER