Sökning: "Film thickness"

Visar resultat 1 - 5 av 328 avhandlingar innehållade orden Film thickness.

  1. 1. Process analytical methods for monitoring of the film coating on pharmaceutical pellets and tablets using NIR spectrometry and image analysis

    Författare :Martin Andersson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PLS; PCA; PAC; NIR; chemometrics; moving samples; information depth; release rate; image analysis; near infrared; process analytical chemistry; thickness; coating; film; tablets; Pellets; granules; Analytical chemistry; Analytisk kemi;

    Sammanfattning : Pharmaceutical tablets and pellets are often covered with a coating. There is a need for methods that enable monitoring of the growth of such films during processing. Such analyses can be performed using process analytical chemical methods based on near infrared (NIR) diffuse reflectance spectrometry. It provides with analyses that take only ca. LÄS MER

  3. 2. Measurements of Film Flow Rate in Heated Tubes with Various Axial Power Distributions

    Författare :Carl Adamsson; Henryk Anglart; Bengt Sundén; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; film flow; film thickness; dryout; power distribution; annular flow; Atomic physics; Atomfysik;

    Sammanfattning : Measurements of film mass flow rate for annular, diabatic steam-water flow in tubes are presented. The measurements were carried out with four axial power distributions and at several axial positions at conditions typical for boiling water reactors, i.e. 7 MPa pressure and total mass flux in a range from 750 to 1750 kg/m2s. LÄS MER

  4. 3. Deformation, stresses and elastohydrodynamic film formation in soft contacts

    Författare :Antonio Gabelli; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Rivlin s function; lip seal; seal deformation; soft contact; magnetic fluid; contact force; film thickness; bearing cage; rubber layer;

    Sammanfattning : .... LÄS MER

  5. 4. Hydrodynamics and Heat Transfer in Vertical Falling Films with Smooth and Modified Heat-Transfer Surfaces – An Experimental and Numerical Investigation

    Författare :Anders Åkesjö; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; film thickness; local heat transfer coefficient; numerical simulations; heat transfer; falling film; VOF; evaporation.;

    Sammanfattning : High energy utilization efficiency is important to achieve a sustainable society. By having highly efficient heat exchangers, more energy can be recovered and reused at a lower cost. LÄS MER

  7. 5. An experimental study on the dynamics of thin liquid films on heater surfaces

    Författare :Shengjie Gong; Tomas Lefvert; Björn Palm; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; liquid film; liquid film instability; film thickness measurement; confocal optical sensor; micro conductive probe; Physics; Fysik;

    Sammanfattning : .... LÄS MER