TY  - JOUR
A1  - Tristram, Hildegard L. C.
T1  - Linguistic Contacts Across the English Channel : the Case of the History of the Retroflex <r>
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Tristram, Hildegard L. C.
T1  - Problems and Possibilities of Intercultural Understanding in European Scholarship 24. - 26. März 1995
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Schröder, Eberhard
A1  - Teo, T.
T1  - Dynamics in cognitive development : sources of intraindividual differences in syllogistic reasoning
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Schröder, Eberhard
A1  - Edelstein, Wolfgang
A1  - Teo, T.
T1  - Growing up in Land's End : implications for cognitive development
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Schröder, Eberhard
A1  - Teo, T.
T1  - Individual differences in the development of correlational reasoning
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Vollmeyer, Regina
A1  - Burns, Bruce D.
T1  - Does hypothesis-instruction improve learning
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Eichler, Hans Joachim
A1  - Haase, Alfred
A1  - Menzel, Ralf
T1  - Power enhancement and application of a Nd:YALO rod amplifier with a phase conjugating mirror
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Penacorada, Florencio
A1  - Angelova, Angelina
A1  - Kamusewitz, Helmut
A1  - Reiche, Jürgen
A1  - Brehmer, Ludwig
T1  - Scanning Force Microscopy and Wetting study of the Surface Modification of a Polypropylene Mambrane by Means of Langmuir-Blodgett Film Deposition
N2  - Polypropylene membranes with deposited ultrathin "siin" layers are attractive for separation and cleaning of gaseous mixtures. In the present study, the surface morphology and wetting hysteresis of composite membranes consisting of a microporous polypropylene support and Langmuir-Blodgett ("skin") films, are investigated. The effect of the interlayer molecular interactions and the substrate features on the integrity and homogeneity of the "skin" layers is examined. Langmuir-Blodgett films of arachidic acid and cadmium and calcium arachidate are characterized both on smooth silicon and on porous polypropylene supports. Contact angle measurements and scanning force microscopy (SFM) are applied for investigations of the membrane surface modification upon transfer of a different number of monolayers. It was found that the contact angle hysteresis of the bare membrane decreases after the LB-deposition of close-packed monolayers. Smoothing of the membrane surface is also evidenced by the SFM images, on different length scales, confirming a good coverage of the membrane pores.
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Janietz, Dietmar
A1  - Barberka, Thomas Andreas
A1  - Hofmann, Dieter
A1  - Brehmer, Ludwig
T1  - Comprehensive structure investigation of Langmuir-Blodgett films of disc-shaped molecules
N2  - The structure of mono- and multilayers of amphiphilic disc-shaped pentaynes wa inbestigated by Brewsterangle microscopy, X-ray specular reflection and grazing incidence diffraction (GID). X-ray specular reflection experiments confirm the "edge on" arrangement of the molecular discs. The molecular modelling of the Langmuir-Blodgett (LB)- multilayers predicts a columnar in-plane packing of the molecules. A GID experiment with monochromatic synchrotron radiation was used to verify the predicted multilayer structure on molecular level, while the Brewsterangle microscopy gave a deeper insight in the monolayer in-plane structure on micron scale.
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Penacorada, Florencio
A1  - Reiche, Jürgen
A1  - Katholy, Stefan
A1  - Brehmer, Ludwig
A1  - Rodriguez-Mendez, Maria-Luisa
T1  - Monolayers and multilayers of uranyl arachidate : 1. study of the interaction of dissolved uranyl ions with arachidic acid Langmuir monolayers
N2  - Langmuir monolayers of arachidic acid have been prepared on a subphase containing uranyl ions (O-U-O)ý+. The interaction between the uranyl ions and the monolayer of arachidic acid has been studied by means of surface pressure and surface potential isotherms and Brewster angle microscopy at different pH values (ranging from 1.5 to 8). A similar systematic study has been carried out in the presence of Cdý+ ions for comparison purposes. The surface pressure and surface potential isotherms demonstrate that the acid to salt conversion of arachidic acid in the presence of uranyl ions occurs at lower bulk pH values (pH=3.5) as compared with other bivalent metal counterions such as Cdý+. Changes in the surface morphology of the monolayer induced by the interaction with uranyl- and cadmium ions are analyzed and the correlation between the surface potential change and the morphology of the films is discussed.
Y1  - 1995
ER  -