Now showing items 21-30 of 64
Viscosity measurements of low temperature molten salts
(Kluwer Academic Publishers; Chapman and Hall Ltd. ; Springer Science+Business Media, 1989-03)
Effects of shearing conditions on crystalline orientation and relaxation in polyethylene
(Society of Plastics Engineers, Inc.Wiley Periodiocals, Inc., 1983-02)
The effects of shearing conditions (i.e., shear temperature and shear rate) on the degree of orientation of polyethylene (Marlex 6006) and to what extent the induced orientation could be relaxed were examined in this study. ...
Techniques for preparing hydrogel membrane capsules
(Kluwer Academic Publishers; Science & Technology Letters ; Springer Science+Business Media, 1988-12)
Techniques for preparing four kinds of hydrogel membrane capsules are described. In the present process the material being encapsulated remains in its original environment in an aqueous suspension. Also, capsule characteristics ...
Turbidimetric determination of particle size distributions of colloidal systems
(Elsevier, 1983-03)
Application of the Mie theory of light scattering to measurements of the turbidity ratio and the wavelength exponent provides an easy method for estimating particle size distributions of nonabsorbing isotropic spheres in ...
Transient measurement of dissolved oxygen using membrane electrodes
(Elsevier, 1989)
Transient mode dissolved oxygen measurement has been studied using a specially constructed galvanic membrane electrode controlled by a microcomputer. A four-layer diffusion model was developed to describe the dynamic ...
Adsorption-induced conductance changes of thin Pt films and PtPd/TiO2 gas sensors
(Elsevier, 1987-11)
Chemisorption of H2 and O2 and resulting changes in electrical conductance of a typical gas sensing material, PtPd/TiO2, and thin Pt films on glass are studied and compared. The activation energy of conduction increases ...
Fischer-Tropsch synthesis on bimetallic ruthenium-gold catalysts
(Elsevier, 1985-06)
The effect of Au in the behavior of Ru as a Fischer-Tropsch catalyst was studied. Two series of catalysts were investigated, one supported on SiO2 and the other on MgO. Au did not seem to alter the product distribution on ...
TPR Investigation of bimetallic Ru-Cu samples supported on SiO 2 , Al 2 O 3 and MgO
(Kluwer Academic Publishers; Wiley Heyden Ltd., Chichester and Akadémiai Kiadó, Budapest ; Springer Science+Business Media, 1987-03)
Bimetallic Ru-Cu samples supported on SiO 2 , Al 2 O 3 and MgO were studied by the temperature-programmed reduction (TPR) technique. Experiments were carried out both on unreduced impregnated salts and after oxidation of ...
The existence of a critical salt concentration for particle release
(Elsevier, 1984-09)
A critical salt concentration (CSC) was found to exist in the water sensitivity of Berea sandstone. If the salinity of the permeating fluid falls below the CSC, the sandstone permeability is significantly reduced as a ...