Abstract During peroxide bleaching of pulp (“P-stage”), the heavy metal ions must be removed from and inactivated by chelation before to prevent undesired degradation cellulose reactive oxygen species. Ethylenediaminetetraacetic acid (EDTA) is mostly used as a chelating agent; however, it may soon banned because environmental concerns. Therefore, there demand for new agents replace EDTA, compre...

The c(s) method results in high-resolution sedimentation coefficient distributions by deconvoluting the effects of diffusion broadening. It is a direct model for sedimentation data covering the complete sedimentation process, based on finite element solutions of the Lamm equation, and algebraically accounts for the systematic noise structure encountered in transport experiments. A continuous se...

The evidence for the existence of a light and broad resonance in I=J=0 ππ scattering process – named as the σ resonance – has been accumulated, and more and more physicists working on the subject accepted the renaissance of the σ resonance. Among those works, model independent analysis 1), 2) are vital in clarifying the issue whether the σ resonance exists or not, since one has to distinguish a...

An overview of the effects of phase separation of aqueous mixtures of gelatin and dextran on the fractionation in molar mass of these two components is given. Molar mass distributions in coexisting phases were investigated using size exclusion chromatography with multiangle laser light scattering. The initial molar mass of the native material, concentration, and temperature were varied. The res...