Sökning: "Agitation"

Visar resultat 1 - 5 av 64 avhandlingar innehållade ordet Agitation.

1. 1. Influence of fluid shear on primary nucleation of low molecular organic compounds in solution

   Författare :Jin Liu; Åke Rasmuson; Mårten Behm; Ulf Gedde; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Agitation; Primary nucleation; Induction time; Fluid shear; Energy input; Mass transfer; Molecular alignment; Butyl paraben; Curcumin; m-Hydroxybenzoic acid; Solid-liquid interfacial energy; Nuclei critical radius;

   Sammanfattning : In this project, two experimental systems have been set up to study the influence of fluid shear on primary nucleation. In the first set of experiments, in total about 3000 nucleation experiments have been done with butyl paraben/ethanol solutions, curcumin/ethanol solutions and m-hydroxybenzoic acid/1-propanol solutions in capped vials agitated with magnetic stir bars. LÄS MER

3. 2. Influence of Fluid Shear on Primary  Nucleation of Organic Compounds in Solution  Jin Liu  Doctoral Thesis

   Författare :Jin Liu; Åke Rasmuson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Agitation; Primary nucleation; Induction time; Fluid shear; Energy dissipation; Mass transfer; Molecular alignment; Cluster coalescence; Butyl paraben; Curcumin; m-Hydroxybenzoic acid; Solid-liquid interfacial energy; Nuclei critical radius.; Chemical Engineering; Kemiteknik;

   Sammanfattning : In this work, three experimental systems have been used to study the influence of agitation/ fluid shear on primary nucleation. Three organic compounds have been used with different solvents, i.e. butyl paraben in ethanol solution, curcumin in ethanol solution and m-hydroxybenzoic acid in 1-propanol solution. LÄS MER

4. 3. Music and other strategies in the care of agitated individuals with dementia. A nursing perspective

   Författare :Hans Ragneskog; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; agitation; care; dementia; elderly; integration; nursing; music; restlessness; video recording;

   Sammanfattning : Agitation is an overarching term commonly used to describe the behaviour of elderly restless patients with dementia. The concept includes behaviour such as tension, aggression, aimless wandering, pacing, cursing, screaming, and fighting. LÄS MER

5. 4. Flow and Rheology of Pulp Suspensions at Medium Consistency

   Författare :Tomas Wikström; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fluidisation; yield stress; agitation; pulp suspension; computational fluid dynamics; fibre properties; turbulence; screening; Bingham model;

   Sammanfattning : Traditionally, development of pulp processing equipment has been based on the accumulation of qualitative knowledge (experience) with respect to the interaction of equipment and pulp suspensions. This way of developing equipment requires several trials and prototypes before the final product and process data can be established. LÄS MER

7. 5. Flow of pulp suspensions at low shear rates

   Författare :Tomas Wikström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fibre diameter; temperature; computational fluid dynamics; consistency; coarseness; wood species; pH; pulp suspension; fibre length; sonar doppler; agitation; Bingham model; yield stress;

   Sammanfattning : .... LÄS MER