The structure of core–shell latex particles of polymethylmethacrylate (the core) and polyurethane (the shell) have been investigated by methods of small-angle X-ray scattering (SAXS) and atom-force microscopy. A set of SAXS patterns has been obtained using contrast variation method. Indirect methods have been used to follow the evolution of distance distribution functions from SAXS for lattices...

Reducing the retention time in carbohydrate analysis is crucial to development of resins for application high-performance liquid chromatography (HPLC). In order solve this problem a new core-shell ion-exchange resin with thin shell layer consisting an ion-exchanging porous on hard polymer core was prepared use HPLC. The effect degree cross-linking (10–55%) shell, wherein core/shell monomer weig...

Over the past decades the invasive Ponto-Caspian gammarid Dikerogammarus villosus spread throughout large rivers of central Europe, thereby rapidly displacing most of the native gammarid species. In 2003, D. villosus was fi rst observed in Lake Constance and was predicted to out-compete the native Gammarus roeselii. However, today the two species coexist at several sites. We hypothesized that a...

The disfigurement resulting from loss of an eye can cause significant psychological as well as social consequences for both the patient and family. Ambroise Pare, a French surgeon-dentist, is considered the pioneer of modern artificial eyes. In 1944 Murphy and Nirronen fabricated physiologic ocular prosthesis in dental corps of US Navy [1]. An ocular prosthesis does not provide vision; but give...