TY - GEN A1 - Quaisser, Erhard T1 - Jeurissen, R. H., Linear algebra appl., 226/228 (1995), S. 617 - 638 BT - Linear algebra appl. Y1 - 1995 ER - TY - GEN A1 - Quaisser, Erhard T1 - Quan, L., Journal of mathematical imaging and vision, 5 (1995), S. 263 - 267 BT - Journal of mathematical imaging and vision Y1 - 1995 ER - TY - GEN A1 - Quaisser, Erhard T1 - Coxeter, A. S. M., Linear algebra and its applications, 226-228 (1995), S. 375 - 388 BT - Linear algebra and its applications Y1 - 1995 ER - TY - GEN A1 - Quaisser, Erhard T1 - Grünbaum, B., Geombinatorics, 4 (1995), 3, S. 77 - 79 BT - Geombinatorics Y1 - 1995 ER - TY - GEN A1 - Klotzek, Benno T1 - Makarov, V. S., On the fundamental polyhedron of a diskrete group of motions of a Lobachevskii space, its combinatorics and deformation Y1 - 1995 ER - TY - GEN A1 - Klotzek, Benno T1 - Chandehari, M., Self-Circumference of rotors Y1 - 1996 ER - TY - GEN A1 - Quaisser, Erhard T1 - Antoni, C. ; Dalena, A., Discrete applied mathematics, 66 (1996), S. 75 - 79 BT - Discrete applied mathematics Y1 - 1996 ER - TY - GEN A1 - Quaisser, Erhard T1 - Greewell, D. ; Johnson, P. D., Geombinatorics,2 (1993), 3, S. 61 - 64 BT - Geombinatorics Y1 - 1996 ER - TY - GEN A1 - Koetz, Joachim A1 - Reichelt, S. A1 - Kosmella, Sabine A1 - Tiersch, Brigitte T1 - Recovery of nanoparticles produced in phosphatidylcholine-based template phases N2 - This paper focuses on the characterization and use of polymer-modified phosphatidylcholine (PC)/sodium dodecyl sulfate (SDS)-based inverse microemulsions as a template phase for BaSO4 nanoparticle formation. The area of the optically clear inverse microemulsion phase in the isooctane/hexanol/water/PC/SDS system is not significantly changed by adding polyelectrolytes, i.e., poly(diallyldimethylammonium chloride) (PDADMAC), or amphoteric copolymers of diallyldimethylammonium chloride and maleamid acid to the SDS-modified inverse microemulsion. Shear experiments show non- Newtonian flow behavior and oscillation experiments show a frequency-dependent viscosity increase (dilatant behavior) of the microemulsions. Small amounts of bulk water were identified by means of differential scanning calorimetry. One can conclude that the macromolecules are incorporated into the individual droplets, and polymer-filled microemulsions are formed. The polymer-filled microemulsions were used as a template phase for the synthesis of BaSO4 nanoparticles. After solvent evaporation the nanoparticles were redispersed in water and isooctane, respectively. The polymers incorporated into the microemulsion are involved in the redispersion process and influence the size and shape of the redispersed BaSO4 particles in a specific way. The crystallization process mainly depends on the type of solvent and the polymer component added. In the presence of the cationic polyelectrolyte PDADMAC the crystallization to larger cubic crystals is inhibited, and layers consisting of polymer-stabilized spherical nanoparticles of BaSO4 (6 nm in size) will be observed. (c) 2004 Elsevier Inc. All rights reserved Y1 - 2005 SN - 0021-9797 ER - TY - GEN A1 - Heller, Wilfried A1 - Saupe, Gabriele A1 - Felgentreff, Carsten A1 - Lindner, Waltraud T1 - Entrepreneurial initiative and regional development: supporting policies in the land of Brandenburg (Eastern Germany) Y1 - 2006 ER -