Sökresultat

Filtyp

Din sökning på "*" gav 534594 sökträffar

On the well-posedness of the Maxwell system for linear bianisotropic media

The time dependent Maxwell system is supplemented with the constitutive relations of linear bianisotropc media and is treated as a neutral integro-differential equation in a Hilbert space. By using the theory of abstract Volterra equations and strongly continuous semigroups we obtain general well-posedness results for the corresponding mathematical problem.

Shielding effects and dislocation repositioning at cleavage crack growth

The motion of pre-existing edge dislocations in an infinite linear elastic body is studied. Motion is due to a quasi-statically steady-state growing crack. In the model, the dislocations glide if the force on the dislocation exceeds a critical value. Obtained results are changes in dislocation density, the shielding effect on the crack tip and residual stresses. The model is applied to an isotropi

Surfactant partitioning in cloud droplet activation: a study of C8, C10, C12 and C14 normal fatty acid sodium salts

We have measured critical supersaturations of dried single component particles of sodium caprylate (CH3(CH2)6COONa), sodium caprate (CH3(CH2)8COONa), sodium laurate (CH3(CH2)10COONa) and sodium myristate (CH3(CH2)12COONa), respectively, in the diameter range 33-140 nm at 296 K using a static thermal gradient diffusion cloud condensation nucleus counter. These fatty acid sodium salts are surface ac