Concept

Fraction massique

Publications associées (47)

Investigation of particle-based and monolithic columns for cation exchange protein displacement chromatography using poly(diallyl-dimethylammonium chloride) as displacer

The overall topic of the investigation was the sepn. of basic proteins by cation exchange displacement chromatog. For this purpose two principal column morphologies were compared for the sepn. of RNase A and a-chymotrypsinogen, two proteins found in the bo ...

2003

Mixing Effects for the Structural Relaxation in Binary Hard-Sphere Liquids

Giuseppe Foffi, Francesco Sciortino

We report extensive molecular-dynamics-simulation results for binary mixtures of hard spheres for different size disparities and different mixing percentages, for packing fractions up to 0.605, and over a characteristic time interval spanning up to 5 order ...

2003

Partial Molar and Specific Volumes of Polyelectrolytes: Comparison of Experimental and Predicted Values in Salt-free Solutions

Jutta Christine Wandrey, David Hunkeler, Artur Bartkowiak

The partial molar volume, .hivin.V, and the partial sp. vol., .hivin.n, were estd. for more than 25 polyelectrolyte structures. The materials investigated by d. measurements in highly dild. aq. solns. (c < 10-2 monomol/L) included both synthetic polyelectr ...

1999

Concentration regimes in polyelectrolyte solutions

Jutta Christine Wandrey

A general description of the electrolytic cond. behavior of highly charged strong polyelectrolytes in dil. and semidilute aq. solns. is presented. For the first time this model considers the effects of the molar mass, charge d. (for charge distances less t ...

1999

Surface roughness in InGaAs channels of high electron mobility transistors depending on the growth temperature: Strain induced or due to alloy decomposition

Marcel Py

InAlAs/InGaAs/InP based high electron mobility transistor devices have been structurally and electrically characterized, using transmission electron microscopy and Raman spectroscopy and measuring Hall mobilities. The InGaAs lattice matched channels, with ...

American Institute of Physics1998

Real time control of InxGa1-xN molecular beam epitaxy growth

Nicolas Grandjean

The growth of GaN and InxGa1-xN on c-plane sapphire substrates was carried out by molecular beam epitaxy using NH3. bl situ reflection high-energy electron diffraction (RHEED) was used to monitor the growth process. Oscillations of the specular beam intens ...

1998

Measurements of sulfur, phosphorus and other ions in microbial biomass: influence on correct determination of elemental composition and degree of reduction

Urs von Stockar

The elemental compn. of microorganisms varies widely with respect to the N, S, P, and ash content as well as many trace elements depending on microorganism and growth conditions. As a consequence, the mass of 1 C-mol of biomass can differ considerably from ...

1995

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