Ernst Gottschalk sitting in a car petting his dog Whip; London, England.

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Water use studies and implications for management of subtropical C4 turfgrasses in dryland and irrigated urban open space

A 2000-03 study to improve irrigation efficiency of grassed urban public areas in northern Australia found it would be difficult to grow most species in dry areas without supplementary watering. Sporoboulus virginicus and sand couch, Zoysia macrantha, were relatively drought-tolerant. Managers of sporting fields, parks and gardens could more than halve their current water use by irrigating over a long cycle, irrigating according to seasonal conditions and using grasses with low water use and sound soil management practices that encourage deep rooting. The use of effluent water provides irrigation and fertiliser cost savings and reduced nitrogen and phosphorus discharge to local waterways. Projected savings are $8000/ha/year in water costs for a typical sporting field.

Gottschalk family in the park; Hannover, Germany. Portraits Family

Left to right: Therese Godshaw (Gottschalk) nee Molling, Walter, Freddy, Grandmother Henriette Gottschalk nee Rothschild, Ursula, Hal and Kurt

TlCaBa2Cu2O7: The 1122 (90 K) superconductor in the new Tl(Ca,Ba)n+1CunO2n+3 seriesstar, open

The 1122 (n=2) member of the Tl(Ca,Ba)n+1CunO2n+3 series containing a single Tl-O layer is shown to be associated with a Tc of 90 K. This value of Tc is significantly lower than that of the 2122 phase (Tcnot, vert, similar110 K) with two Tl-O layers.

Microstructural study of rapidly solidified titanium eutectoid alloysstar, open

Rapid solidification of Ti-7.3wt.%Cu (near-eutectoid composition), Ti-36.2wt.%Ni and Ti-34.3wt.% Ni-5.8wt.%Si alloys has been carried out by electron beam melting and splat quenching on a water-cooled rotating copper disc. The product obtained was in the form of thin ribbons 60–100 μm thick. Transmission electron microscopy studies of Ti---Cu alloy splats showed that the microstructure consisted of a mixture of martensite and a lamellar eutectoid product. The formation of the intermetallic compound Ti2Cu involved a diffusionless ω transformation and spinodal clustering. In the case of Ti---Ni alloy the as-quenched microstructure is complex, consisting of α, transformed β and intermetallic phases. This could have arisen possibly as a result of local variation in cooling rates. Rapid solidification of Ti---Ni---Si alloy resulted in partial quenching of an amorphous phase. The amorphous phase was seen to be extremely hard (a Vickers hardness of about 800 HV).

Flora Lotte "Lola" Reiss in drivers seat of car Portraits Women

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Flora Lotte "Lola" Reiss driving a car Portraits Women

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Alfred Lichtenstein with his first wife Gerda and their daughter Sylvia seated on a park bench; Buenos Aires.

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Ruth Augusta Beatrice Goldschmidt outside the Richmond Park Hotel; Karlsbad Portraits Women

Born 1923?

Martin Goldschmidt reading on a park bench Portraits Men

Handwritten postcard addressed to Ruth Goldschmidt in Italy and dated 1937 from Zurich

Ruth Augusta Beatrice Goldschmidt with her parents Paula Goldschmidt née Harmelin and Martin Goldschmidt, walking on the street outside the Richmond Park Hotel; Karlsbad Portraits Family

Paula Goldschmidt, née Harmelin, born 1880; Martin Goldschmidt, born circa 1879; Ruth Augusta Beatrice Goldschmidt, born 1923?

Paul and Rahel in a car with an unidentified chauffeur; Berlin Portraits Couples

Paul was the son from a previous marriage of Hermann Judey's first wife Olga Judey nee Fischmann