Fritz Gottschalk, Therese Gottschalk nee Molling and Lotte Stern nee Wallerstein on a hiking tour in the mountains.

Therese Gottschalk nee Molling, wife of Fritz Gottschalk; Lotte Stern nee Wallerstein, 1st cousin of Lotte Stern nee Wallerstein

Studio portrait of Liselotte "Lotte" Stern nee Wallerstein.

Photograph probably taken shortly before her marriage to Alfred Stern in 1928.

Non-destructive prediction of 'Hass' avocado dry matter via FT-NIR spectroscopy.

BACKGROUND: The inability to consistently guarantee internal quality of horticulture produce is of major importance to the primary producer, marketers and ultimately the consumer. Currently, commercial avocado maturity estimation is based on the destructive assessment of percentage dry matter (%DM), and sometimes percentage oil, both of which are highly correlated with maturity. In this study the utility of Fourier transform (FT) near-infrared spectroscopy (NIRS) was investigated for the first time as a non-invasive technique for estimating %DM of whole intact 'Hass' avocado fruit. Partial least squares regression models were developed from the diffuse reflectance spectra to predict %DM, taking into account effects of intra-seasonal variation and orchard conditions. RESULTS: It was found that combining three harvests (early, mid and late) from a single farm in the major production district of central Queensland yielded a predictive model for %DM with a coefficient of determination for the validation set of 0.76 and a root mean square error of prediction of 1.53% for DM in the range 19.4-34.2%. CONCLUSION: The results of the study indicate the potential of FT-NIRS in diffuse reflectance mode to non-invasively predict %DM of whole 'Hass' avocado fruit. When the FT-NIRS system was assessed on whole avocados, the results compared favourably against data from other NIRS systems identified in the literature that have been used in research applications on avocados.

Postcard distributed by M. Molling & Co. to commemorate the 100th anniversary of Friedrich Schiller's death; Hannover, Germany. Advertisements

Addressed to Therese Gottschalk nee Molling, postmarked 25 April 1905 and mailed from Hannover to Hildesheim, most likely while Therese was visiting her Meyerhof grandparents

Studio portrait of Liselotte "Lotte" Stern nee Wallerstein.

Photograph probably taken shortly before her marriage to Alfred Stern in 1928.

Lotte Stern and Dr. Alfred Stern with Otto Wallerstein, a relative of Lotte's father; Berkeley, California.

From left to right: Lotte Stern, Otto Wallerstein, Alfred Stern; Photograph taken shortly after arrival in Berkeley, California

Studio portrait of Julius Krakauer as a young man; Landeshut (Kamienna Gora), Schlesia.

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Studio portrait of Hans S. Krakauer as a baby; Landau in der Pfalz, Germany.

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Wedding portrait of Hans Krakauer and Elizabeth Gottschalk; Hannover, Germany. Portraits Couples

In the apartment on Ruemkorffstrasse that the Gottschalks occupied after being forced to sell their house.

Reiss family portrait; (l-r) Olga, Herbert, Flora Lotte, Walter, Moritz and Kurt; Saaz, Czechoslovakia Portraits Family

Olga Reiss nee Kohn died 1950s; Herbert Reiss, 1905-circa 1980; Flora Lotte "Lola" Reiss, 1910-1995; Walter Reiss, 1908-1937; Moritz Reiss, 1876-1965; Kurt Reiss, 1906-1996

Portrait of Herbert Reiss Portraits Men

Handwritten on verso: Zur Erinnerung von Euerem in Emigration lebenden. Signed Herbert. Luneville, 4/XI 1938.

Herbert Reiss with his wife Trude Loewy on the beach in England Portraits Couples

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Alfred Lichtenstein making a movie; Berlin.

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Portrait of Alfred Lichtenstein smoking a pipe.

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Portrait of Alfred Lichtenstein with his flute; Berlin.

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