Sökning: "phase behavior"

Visar resultat 11 - 15 av 615 avhandlingar innehållade orden phase behavior.

1. 11. Phase transformation and stability studies of the Zr-H system

   Författare :Tuerdi Maimaitiyili; Lars Hallstadius; Malmö högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Zirconium hydride; synchrotron X-ray diffraction; Nuclear materials; phase transformation; in-situ hydrogen charging; hydrogen related degradation; neutron diffraction; powder diffraction; Rietveld analysis; γ-ZrH; hydrogen embrittlement; zirconium hydride; γ-ZrH; synchrotron X-ray diffraction; neutron diffraction; hydrogen charging; in situ phase transformation; hydrogen embrittlement; hydrogen induced degradation;

   Sammanfattning : Zirconium alloys are widely used in the nuclear industry because of their high strength, good corrosion resistance and low neutron absorption cross-section. Zirconium has a strong affinity for hydrogen, however, and if hydrogen concentration builds up, the material will gradually degrade. LÄS MER

3. 12. Ternary Block Copolymer - Water - "Oil" Systems: Effects of "Oil" Type and Block Size on Phase Behaviour and Structure

   Författare :Peter Holmqvist; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; poly propylene oxide ; poly ethylene oxide ; poloxamer; micelles; lyotropic liquid crystals; SAXS; structure; phase behavior; self-assembly; block copolymers; amphiphiles; poly tetrahydrofurane ; Physical chemistry; Fysikalisk kemi;

   Sammanfattning : It has recently been established in our group that amphiphilic block copolymers consisting of a hydrophilic and a hydrophobic part can self-assemble in the presence of selective solvents (“water” and “oil”) into a variety of different solution and lyotropic liquid crystalline microstructures. The effects of the “oil” type, hydrophilic block size and hydrophobic block type on the phase behavior and microstructure of ternary isothermal copolymer - oil - water systems have been addressed in this thesis. LÄS MER

4. 13. On the Extraction of Essential Oils by Supercritical Carbon Dioxide and its Influence on the Mesomorphic Phase Structures

   Författare :José da Cruz Francisco; Kemiska institutionen; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Natural oils; fats and waxes technology; Naturliga oljor; fetter; vax; Kemiteknik och kemisk teknologi; Chemical technology and engineering; Livsmedelsteknik; Food and drink technology; phase behavior; soybean lecithin; monoolein; cineole; terpenes; eucalyptus; extraction; Essential oils; supercritical carbon dioxide;

   Sammanfattning : A comparison of essential oils from leaves of Eucalyptus camaldulensis Dehn. obtained by hydrodistillation (HD) and supercritical carbon dioxide (SC-CO2) extraction is presented. Selected major components of the oils showed a predominance of higher molecular weight components in the SC-CO2 extracts than in those obtained by HD. LÄS MER

5. 14. Compulsive sexual behavior disorder: clinical characteristics and treatment with Naltrexone

   Författare :Josephine Savard; Jussi Jokinen; Katarina Görts Öberg; Cecilia Dhejne; Andreas Chatzittofis; Soili Lehto; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; compulsive sexual behavior disorder; Naltrexone; Fluoxetine; hypersexual disorder; sexual addiction; interpersonal violence; suicidal behavior; impulsivity; treatment; psykiatri; Psychiatry;

   Sammanfattning : Background: Compulsive Sexual Behavior Disorder (CSBD) is characterized by sexual preoccupation and loss of control of sexual behaviors causing distress, negative consequences, and impairment. Despite its high prevalence, the condition is understudied in terms of background factors and treatment. LÄS MER

7. 15. Phase Segregation and Microstructural Changes in Starch - Protein Systems

   Författare :Carla Quiroga; Livsmedelsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Patatin; ß-Lactoglobulin; Amylopectin; Phase Segregation; Amylose; Macromolecular chemistry; Makromolekylär kemi;

   Sammanfattning : This thesis presents the study of the phase behavior of starch ? protein systems in relation to their microstructure and mechanical properties. To study the complexity of this multicomponent system, the main components of starch (amylopectin and amylose) were studied separately in presence of a protein (ß-lactoglobulin or patatin). LÄS MER