Portrait of Bertha Oppenheimer nee Strauss Portraits; Women

Wife of Emil Oppenheimer and mother of Louis Oppenheimer

Wedding portrait of Adolf Wolff and Eva Nathan with guests; Berlin, Germany.

Back row against wall, left to right: Josef Molling, Margaret Molling nee Benjamin, Werner Wolff, Miss Hermann (called "Ferna", Peter Molling's governess), " Selma" (partially hidden, Anna Marianne/Berthold Nathan's cook), "Lisbeth" (Anna Marianne/Berthold's maid), Ilse Joachim, Ernst Joachim, Annemarie Nathan (3rd wife of Julius Nathan), Julius Nathan (brother of Berthold Nathan), Ernst Kallmes (son of Ceilchen nee Wolff, Helene's sister). Very tall against the wall: Max Benjamin (son of Helene). Third row, left to right: Mathilde Kaufmann nee Benjamin, Adolf Molling, Paul Nathan (son of Anna Marianne/Berthold), Marianne Rasmussen (daughter of Waldemar), Hildegard Weinberger (friend of bride), Herta Albrecht (friend of bride), Dr. Franz Gruenberg (friend of groom), Leonie Wolff nee Simon (wife of Werner Wolff), Lina Molling nee Marx (wife of Richard), Waldemar Benjamin-Rasmussen (son of Helene/David), Luzi's Husband, Minka Bernard nee Nathan (sister of Berthold Nathan), Richard Molling (brother of Claerchen), Albert Wolff (brothter of Moritz Wolff). Second row, seated, left to right: Helene Benjamin nee Wolff, Berthold Nathan, Anna Marianne Nathan nee Benjamin, bride Eva Wolff nee Nathan, groom Adolf Wolff, Claerchen Wolff nee Molling, Moritz Wolff, standing Luzi Rasmussen nee Gruen (wife of Waldemar). Front row, children on floor, left to right: Peter Molling, Elizabeth Benjamin-Rasmussen mar. Engel, Louis Peter Wolff, Helmut Benjamin Rasmussen (became Henry)

Re-entrant Phase Behavior of a Concentrated Anionic Surfactant System with Strongly Binding Counterions

The phase behavior of the anionic surfactant sodium dodecyl sulfate (SDS) in the presence of the strongly binding counterion p-toluidine hydrochloride (PTHC) has been examined using small-angle X-ray diffraction and polarizing microscopy. A hexagonal-to-lamellar transition on varying the PTHC to SDS molar ratio (alpha) occurs through a nematic phase of rodlike micelles (N-C) -> isotropic (I) -> nematic of disklike micelles (N-D) at a fixed surfactant concentration (phi). The lamellar phase is found to coexist with an isotropic phase (l') over a large region of the phase diagram. Deuterium nuclear magnetic resonance investigations of the phase behavior at phi = 0.4 confirm the transition from N-C to N-D on varying alpha. The viscoelastic and flow behaviors of the different phases were examined. A decrease in the steady shear viscosity across the different phases with increasing alpha suggests a decrease in the aspect ratio of the micellar aggregates. From the transient shear stress response of the N-C and N-D nematic phases in step shear experiments, they were characterized to be tumbling and now aligning, respectively. Our studies reveal that by tuning the morphology of the surfactant micelles strongly binding counterions modify the phase behavior and rheological properties of concentrated surfactant solutions.

Wedding portrait of Freddy Gottschalk and Barbara Joan Doble with guests; Welwyn Garden City, England.

Portrait includes a number of family members who were able to get to England before the war and who chose to remain there.

Family portrait of the Gottschalk family; Hannover, Germany.

Front Row (l-r): Frau Steinfeld (mother of Elizabeth Gottschalk nee Steinfeld and Hela Steinfeld), Fritz Gottschalk, Karl Gottschalk, Henrietta Gottschalk nee Rothschild (mother of Fritz, Karl, Anna and Ernst), Anna Catsenstein nee Gottschalk (twin of Karl Gottschalk), and Elizabeth Gottschalk; Back Row (l-r): Hela Steinfeld (sister of Elizabeth Gottschalk nee Steinfeld), Therese Gottschalk nee Molling (wife of Fritz), Leo Catsenstein (husband of Anna), Elizabeth Gottschalk nee Steinfeld (wife of Karl), Ernst Gottschalk, and Henny Molling nee Meyerhof (mother of Therese Gottschalk nee Molling)

Portrait of Else Walter Roth Portraits; Women

Else Walter Roth, born 11 September 1894. Wife of Bruno Roth and mother of Christine Roth-Schurtman

Reiss family portrait on the occasion of the wedding of Harry Gould to Eva Fantl; Royal Connaught Hotel, Hamilton, Ontario.

Standing l-r: George? son of Max Reiss?, Max Reiss, Harry Gould, Moritz Reiss, Joe Reiss, and Herbert Reiss; Seated l-r: Trude Reiss (wife of Herbert), Else Reiss (mother of Joe), Lily Friedlander Gould, Eva Fantl Gould, Trude Reiss (wife of Joe), and Marta Reiss (wife of Max)

Reproduction of portrait of Auralie Levinson nee Roos.

Wife of Louis Levinson

Signed portrait of Maria Leschnitzer.

Wife of Adolf Leschnitzer

Studio portrait of Gündel Segall.

Digital Image

Reproduction of studio portrait of Julie Ehrenberg nee Fischel Portraits Women

Wife of Philipp Ehrenberg

Reproduction of studio portrait of Julie Ehrenberg nee Fischel Portraits Women

Original held by Paul Ehrenberg

Studio portrait of Rachel Eliasberg seated and holding a book Portraits Women

Wife of Samuel Eliasberg, mother of Wladimir, Helene, Rose and Georg

Portrait of Lena Molling nee Marx; Hannover, Germany.

Digital Image

Wedding portrait of Freddy Gottschalk and Barbara Joan Doble with guests; Welwyn Garden City, England.

Portrait includes a number of family members who were able to get to England before the war and who chose to remain there.