690 research outputs found
Ammonium Phenylphosphonamidodiselenoates and Phenylphosphonamidodi-selenoic Diamides from the Selenation of Primary and Secondary Amines
No full textThe authors are thankful to the University of St Andrews and the Engineering and Physical Science Research Council (EPSRC, U.K.) for financial support.By reacting two equivalents of primary or secondary amines with 2,4-bis(phenyl)-1,3-diselenadiphosphetane-2,4-diselenide (Woollins' reagent) at room temperature a series of new ammonium phenylphosphonamidodiselenoates 1-7 have been obtained in good to excellent yields (70-99 %). The first metal complex of phenylphosphonamidodiselenoate, the complex of Cd2L4 (L = [Se2PPh(NCH(CH3)(2)](-)) (8) has been prepared from the reaction of diisopropylamine N-isopropyl-P-phenylphosphonamidodiselenoate with Cd(CH3COO)(2) in dichloromethane. Upon heating to 130 degrees C the ammonium phenylphosphonamidodiselenoates lose hydrogen selenide leading to the corresponding phenylphosphonamidodiselenoic diamides 9-11 in almost quantitative yields. The same products 9-11 can also be prepared directly from the reaction of primary amines with Woollins' reagent in refluxing toluene. Three representative X-ray structures are described.Peer reviewe
In-Line Characterization of ground oily seeds concentration in solid-liquid dispersions in the food industry
No full textOlivier Le Deuff, Digital Humanities. History and Development, London: ISTE, Hoboken: Wiley, 2018, 165 p. ISBN 978-1-78630-016-4
No full textThe contribution proposed for analysis, published in 2018 by ISTE and Wiley, is included in ISTE’s Intellectual Technologies Set coordinated by Jean-Max Noyer and Maryse Carmes. Rather than presenting an exhaustive history of digital humanities, the author, lecturer in Information and Communication Sciences at Bordeaux Montaigne University, manufactures a sketch that traces the origins of digital humanities to the birth of modern science. The paradigm postulated by the author breaks away from the vision of congruence between computer technologies and digital humanities and suggests that, alternatively to the generation of digital humanities by the computing tools, digital humanities precede computer technologies. The thesis proposed by Olivier Le Deuff, however valiant, is also audacious, as the precedents he sets to prove the existence of digital humanities prior to the Digital Revolution may seem strained. As the author himself states, more than a presentation of the history and development of digital humanities, the book ought to be treated as an archeology of knowledge and methodologies, a presentation of the antecedents of the current directions in digital humanities
Book Review: Angela Lumezeanu, “Infrastructuri digitale pentru istoria socială. Construirea bazelor de date istorice”, Cluj-Napoca, Mega, 2021, 196 p.
No full textThe monograph by Angela Lumezeanu represents a recent addition to the Digital Humanities (DH) research trend developed at Babeş-Bolyai University Cluj-Napoca during the 2010s by the scholars in the field of Humanities who are mostly but not exclusively historians. The author is a Junior Researcher at Babeş-Bolyai University, Centre for Population Studies and software engineer at “George Bariţiu” History Institute of The Romanian Academy in Cluj-Napoca. She has a formal education in both History and Computer Science and has a solid experience working on DH projects, the best-known of which is the Historical Population Database of Transylvania
Solvent extraction of thorium(IV) with dibutyldithiophosphoric acid in various organic solvents
No full textSolvent extraction of uranium(VI) with DI-2-ethylhexyldithiophosphoric acid from aqueous nitrate, chloride, sulfate and phosphate media
No full textSynthesis and characterization of group fourteen substituted methanes
No full textAbstract not availabl
Solvent extraction of lanthanum(III) and cerium(III) with dialkyldithiophosphoric acids. Separation from thorium(IV)
No full textExtraction of uranium/VI/ with di-2-ethylhexyldithiophosphoric acid in different organic solvents
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