Suchergebnisse
Suchergebnisse:
Vor 3 Tagen · A proposed structure of *benzene in which the molecule has a hexagonal ring of carbon atoms linked by alternating double and single bonds. Kekulé structures contribute to the resonance hybrid of benzene. The structure was suggested in ...
Vor 3 Tagen · Later, it came to mean more things to more people. German chemist August Kekulé had a daydream of the ouroboros which led him to discover the circular structure of benzene, a molecule critical to human life. Kekulé wrote (via MIT), "Again the atoms were flitting before my eyes. Smaller groups now kept modestly in the background. My mind's eye ...
Vor 3 Tagen · Friedrich August Kekulé von Stradonitz (1829–1896), Chemiker; Peter Kern (* 1941), germanistischer Mediävist; Peter Graf von Kielmansegg (* 1937), Politikwissenschaftler und emeritierter Professor der Universität Mannheim; Friedrich Kießling (* 1970), Historiker; Hermann Friedrich Kilian (1800–1863), Gynäkologe
Vor 5 Tagen · „Die meisten meiner Kollegen schätzen das Risiko einer Pandemie durch einen Abkömmling von H5N1 als hoch ein“, sagte der Epidemiologe Alexander Kekulé, Leiter des Lehrstuhls für Medizinische Mikrobiologie und Virologie der Martin-Luther-Universität Halle-Wittenberg zur Bild. Noch sei eine Ansteckung beim Menschen selten.
Vor 6 Tagen · Kekulé betont die Notwendigkeit, eine Einschleppung des Virus nach Europa zu verhindern und empfiehlt Schutzmaßnahmen, um sowohl die Landwirtschaft als auch die Versorgungssicherheit zu schützen....
Vor 2 Tagen · August Kekulé (1829-1896) was a German chemist who made breakthroughs in understanding the structure of molecules in organic chemistry. His most notable achievement, in 1865 was describing the structure of benzene as a ring of six carbon atoms with a hydrogen atom attached to each of them. Benzene is the simplest of the aromatic ...
Vor 4 Tagen · August Kekulé had been working on trying to discover the structure of a certain chemical. Whilst daydreaming, he saw atoms dancing in front of his eyes. These then morphed into snakes. When one grabbed its own tail, he realised that the structure of the chemical that had been eluding him was a ring.
