Giulio Natta nacque a Porto Maurizio, allora capoluogo dell'omonima provincia (quella di Imperia nacque negli anni 1920 dalla fusione con Oneglia), il 26 febbraio 1903, figlio di Francesco Maria, magistrato, e di Elena Crespi.La madre, già vedova di un rinomato medico inglese dal quale aveva avuto una figlia, si occupò attivamente dell'educazione di Giulio sin dai primi anni, …

A Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, is a catalyst used in the synthesis of polymers of 1-alkenes (alpha-olefins).Two broad classes of Ziegler–Natta catalysts are employed, distinguished by their solubility: Heterogeneous supported catalysts based on titanium compounds are used in polymerization reactions in combination with cocatalysts, …

Dario Fo (prononcé : [ˈdaːrjo ˈfɔ]), né le 24 mars 1926 à Sangiano près de Varèse en Lombardie et mort le 13 octobre 2016 à Milan, est un écrivain italien, dramaturge, metteur en scène et acteur, ce qui en fait un « homme de théâtre complet ».. Époux de Franca Rame, il est aussi lauréat du prix Nobel de littérature en 1997.L'Académie suédoise indique qu'il « imite les ...

A chemist (from Greek chēm(ía) alchemy; replacing chymist from Medieval Latin alchemist) is a scientist trained in the study of chemistry.Chemists study the composition of matter and its properties. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms.Chemists carefully measure substance …

History. Phillips Petroleum chemists J. Paul Hogan and Robert Banks first demonstrated the polymerization of propylene in 1951. The stereoselective polymerization to the isotactic was discovered by Giulio Natta and Karl Rehn in March 1954. This pioneering discovery led to large-scale commercial production of isotactic polypropylene by the Italian firm Montecatini from …

Parentele di Giulio Cesare. Di questa famiglia, cui appartengono i primi cinque imperatori romani, faceva parte Giulio Cesare (100 a.C.-44 a.C.).Alcuni ritengono erroneamente che sia stato il primo imperatore, ma il suo potere venne sanzionato con il titolo di dittatore a vita nel 45 a.C., e venne assassinato l'anno dopo.. Era figlio di Gaio Giulio Cesare (morto nell'85 a.C.) e di Aurelia ...

The International Committee of the Red Cross (ICRC; French: Comité international de la Croix-Rouge) is a humanitarian organization based in Geneva, Switzerland, and a three-time Nobel Prize Laureate. State parties (signatories) to the Geneva Convention of 1949 and its Additional Protocols of 1977 (Protocol I, Protocol II) and 2005 have given the ICRC a mandate to protect …

Die Keilstrichformel (englisch Natta Projection nach Giulio Natta) gehört zu den chemischen Strukturformeln.Sie verdeutlicht die räumliche Anordnung der Molekülbestandteile (der Substituenten).Diese Kommunikation und Kenntnis der räumlichen Anordnung ist besonders bei chiralen Arzneistoffen von erheblicher praktischer Bedeutung, da die Stereoisomere in der …

In polymer chemistry, branching is the regular or irregular attachment of side chains to a polymer's backbone chain.It occurs by the replacement of a substituent (e.g. a hydrogen atom) on a monomer subunit by another covalently-bonded chain of that polymer; or, in the case of a graft copolymer, by a chain of another type.Branched polymers have more compact and …

Ligurien (italienisch Liguria) ist eine Küstenregion in Nordwestitalien mit 1.543.127 Einwohnern (Stand 31. Dezember 2019) und flächenmäßig die drittkleinste italienische Region.Ligurien grenzt im Westen an Frankreich, im Norden an die Region Piemont, im Osten an die Emilia-Romagna und die Toskana sowie im Süden an das Ligurische Meer, einen Teil des Mittelmeers.