Sökning: "z-direction"

Visar resultat 1 - 5 av 10 avhandlingar innehållade ordet z-direction.

1. 1. On the compression properties of paper - implications for calendering

   Författare :Peter Rättö; KTH; []
   Nyckelord :calendering; compression; creep; density; finite element analysis; heat transfer coefficient; mechanical properties; temperature; thermal conductivity; viscoelasticity; z-direction;

   Sammanfattning : The objective of this work was to study and describe thedeformation of paper in the thickness direction in a calendernip that in some cases was heated. The temperature distributionin the thickness direction was evaluated using modelexperiments. LÄS MER

3. 2. On the mechanism of heat transfer with phase change during impulse pressing of paper

   Författare :Marco F. C. Lucisano; KTH; []
   Nyckelord :Paper; High-intensity; Presses; Impulse drying; Heat transfer; Phase transitions; Heat-pipe effect; Steam; Delamination; Flashing; Permeability; Z direction;

   Sammanfattning : .... LÄS MER

4. 3. Delamination of paperboard related to offset printing

   Författare :Orlando Girlanda; Christer Fellers; Fredrik Thuvander; Jeffrey Suhling; Karlstads universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mechanical properties; Delamination; Finite Element Method; Paperboard; Z direction strength; Test equipment; Paperboard; Sheet Offset Printing; Web Offset printing; Shear stress; Modelling; Materials science; Teknisk materialvetenskap; Materialteknik; Materials Engineering;

   Sammanfattning : The relationship between the behavior of paper during converting operations and the mechanical properties of paper are a fundamental issue for both paper producers and converters. In the attempt to establish these relationships and thus be able to judge the performance of paper, several testing methods have been developed. LÄS MER

5. 4. P-type ATPases studied by electron microscopy and two-dimensional crystallization

   Författare :Kenneth Yijing Xian; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :electron microscopy; ion transport; membrane protein; P-type ATPase; two-dimensional crystallization;

   Sammanfattning : Electron microscopy and two-dimensional crystallography have been used to study the molecular structures of the porcine renal Na+,K+-ATPase and the porcine gastric H+,K+-ATPase. In addition, morphological changes have been observed with electron cryomicroscopy from tubulovesicles in porcine gastric mucosae. LÄS MER

7. 5. On the out-of-plane mechanical behaviour of paper materials

   Författare :Niclas Stenberg; KTH; []
   Nyckelord :;

   Sammanfattning : This thesis deals with the through-thickness mechanicalbehaviour of paper materials. The material response undercombined normal and shear through-thickness loadings isfundamental for analysis and understanding of many end-use andconverting operations, such as folding, creasing, printing,calandering and cutting. LÄS MER