Friedrich Wilhelm Bessel was a German astronomer, mathematician, physicist and geodesist. He was the first astronomer who determined reliable values for the distance from the sun to another star by the method of parallax. A special type of mathematical functions were named Bessel functions after Bessel's death, though they had originally been discovered by Daniel Bernoulli and then generalised by Bessel.
Johann Friedrich von Brandt was a German-Russian naturalist, who worked mostly in Russia.
Gustav Benjamin Schwab was a German writer, pastor and publisher.
Julius Robert von Mayer was a German physician, chemist and physicist and one of the founders of thermodynamics. He is best known for enunciating in 1841 one of the original statements of the conservation of energy or what is now known as one of the first versions of the first law of thermodynamics, namely that "energy can be neither created nor destroyed". In 1842, Mayer described the vital chemical process now referred to as oxidation as the primary source of energy for any living creature. His achievements were overlooked and priority for the discovery of the mechanical equivalent of heat was attributed to James Joule in the following year. He also proposed that plants convert light into chemical energy.
Paraldehyde is the cyclic trimer of acetaldehyde molecules. Formally, it is a derivative of 1,3,5-trioxane, with a methyl group substituted for a hydrogen atom at each carbon. The corresponding tetramer is metaldehyde. A colourless liquid, it is sparingly soluble in water and highly soluble in ethanol. Paraldehyde slowly oxidizes in air, turning brown and producing an odour of acetic acid. It quickly reacts with most plastics and rubber.
Benzilic acid is an organic compound with formula C
14H
12O
3 or (C
6H
5)2(HO)C(COOH). It is a white crystalline aromatic acid, soluble in many primary alcohols.
Deir al-Dubban was a small Palestinian village 26 kilometers (16 mi) northwest of Hebron, near the modern village of Luzit, between Jerusalem, and Ashkelon. The village was depopulated in the 1948 Palestine War.
Dayr al-Hawa was a Palestinian Arab village in the Jerusalem Subdistrict. The village was depopulated during the 1948 Arab-Israeli War on October 19, 1948 by the Fourth Battalion of the Har'el Brigade of Operation ha-Har. It was located 18.5 km west of Jerusalem.
Coleophora cornutella is a moth of the family Coleophoridae. It is found from Fennoscandia to the Pyrenees and the Alps and from France to Romania.
Henry Van der Weyde (1838–1924) was a Dutch-born English painter and photographer, best known for his photographic portraits of the late 19th century. His is considered a photographic pioneer in the use of electric light in photography. Amongst his portraits are architect William Burges (c.1880), Alexandra, Princess of Wales,A. E. Housman, actresses Mary Anderson (1887) and Dorothy Dene (1880s), Sir Edwin Arnold, bodybuilder Eugen Sandow (1889) and explorer Fridtjof Nansen (1897).
The hybrid elm cultivar Ulmus × hollandica 'Fastigiata' was first listed and described as Ulmus glabra fastigiata, a narrow-crowned elm with large smooth leaves, by Petzold and Kirchner in Arboretum Muscaviense (1864). C. Berndt of the Berndt Nursery, Zirlau, Schweidnitz, described an elm of the same name in Mitteilungen der Deutschen Dendrologischen Gesellschaft, that he had received in 1903 "from a renowned nursery in Holstein" as Ulmus montana fastigiata macrophylla. A tree of that name had been listed by Dieck in 1885 without description. Berndt reported that his U. glabra fastigiata was "easy to confuse with U. montana superba", a tree "known in the Magdeburg region as Ulmus praestans", a statement confirming that, like that cultivar, his tree was a form of U. × hollandica. Karl Gustav Hartwig who received specimens of U. praestans from Kiessling of the Magdeburg city nursery in 1908, concluded (1912) that U. glabra fastigiataKirchner was indistinguishable in leaf or habit from U. praestans. An U. campestris glabra fastigiataArb. Musc. [ = Kirchner] was distributed by the Hesse Nursery, Weener, Germany, in the 1930s, where it was listed separately from U. praestans.
Theoperidae is a family of radiolarians in the order Nassellaria.
Tetanocerini is a tribe of flies in the family Sciomyzidae. There are at least 120 described species in the tribe.
Drunella cornutella is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in North America.
Sciomyzinae is a subfamily of flies in the family Sciomyzidae.
Cornutella profunda is a species of radiolarian in the family Theoperidae and the genus Cornutella. The abundance and actual geographic span of C. profunda has not yet been fully explored, however few have been caught in various regions around the world. Samples have seen in larger numbers in the Adriatic Sea, the South China Sea, and far off the coast of Southern Africa near Namibia, and in smaller numbers in all other oceans around the world.
