New technology utilizing chelating resin.

Chromatographic Zinc Isotope Separation by Chelating Exchange Resin

Zinc isotope separations were studied by displacement chromatography using the chelating properties of malate, citrate and lactate exchange resin and EDTA as ligands. After each chromatographic operation, the heavier zinc isotopes were found to preferentially fractionated into the carboxylate complex solution phase. The separation coefficients (epsilon) for zinc isotope separation had the large...

Cast anterior bridges utilizing composite resin.

J. he loss of a permanent anterior tooth on a young patient poses unique problems in replacement for the pedodontic practitioner. Full crown coverage of the abutment teeth necessary for conventional fixed bridgework is often contraindicated due to the large size of the pulp chamber and the potential for pulpal damage. Even if possible, this reduction violates the current concepts of good conser...

New Insights into the Tumor Microenvironment Utilizing Protein Array Technology

The tumor microenvironment (TME) is a considerably heterogeneous niche, which is created by tumor cells, the surrounding tumor stroma, blood vessels, infiltrating immune cells, and a variety of associated stromal cells. Intercellular communication within this niche is driven by soluble proteins synthesized by local tumor and stromal cells and include chemokines, growth factors, interferons, int...

New motion control system options utilizing EtherCAT technology

New Chelating Derivatives of Chitosan

Dithiocarbamate chitosan, an insoluble derivative obtained from carbon disulfide, and N-(o—carboxybenzyl) chitosan and N—car— boxymethyl chitosan, two water—soluble olyamoholytes obtained from phthalaldehydic acid and glyoxylic acid, can be used for removal of metal ions from dilute solutions. Their characteristic properties are described in terms of infrared, ultraviolet and circular dichroism...