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A practical amine-free synthesis of symmetric ureas and thioureas by self-condensation if iso(thio)cyanates
(Thieme Stuttgart, 1999)
Isocianates and isothiocyanates are readily transformed into the corresponding symmetric N,N'-disubstituted ureas and thioureas upon treatment with pyridine-water with no formation of side products. Evidence is shown for ...
Diastereoselective addition of nitro compounds to alpha,beta-unsaturated gamma-butyrolactones
(Pergamon-elsevier Science LtdOxfordInglaterra, 2006)
Reforming medical education: A review and synthesis of five critiques of medical practice
(Social Science and Medicine, 2010)
For physicians to provide appropriate healthcare at a reasonable cost, health reform may not be enough. This essay discusses the scope of educational reform needed in the U.S. to train tomorrow’s physicians to practice ...
Synthesis and characterization of bismuth alkaline titanate powders
(Journal of Alloys and Compounds Volume 509, Issue SUPPL. 1, 14 July 2011, Pages S375-S379, 2011-07-14)
In this work, samples of bismuth alkaline titanate, (K 0.5Na 0.5) (2-x/2)Bi (x/6)TiO 3, (x = 0.05-0.75) have been prepared by conventional ceramic technique and molten salts. Metal oxides or carbonates powders were used ...
Potassium Selenocyanate
(Georg Thieme Verlag Kg, 2014-03)
Potassium selenocyanate (KSeCN) is an easy-to-handle and readily available reagent. It is crystalline, colorless, highly hygroscopic, and air sensitive. Non-adequate storage may lead to its decomposition. This salt is ...
Tecnologias Digitais e a relação entre teoria e prática: Uma análise da produção em trinta anos de BOLEMA
(2015-12-01)
This article presents an analysis of the research on the use of digital technologies in mathematics classes in Brazil. Our research was based on articles in BOLEMA that have addressed this issue over the past thirty years. ...
Tabu search algorithm for network synthesis
(Ieee-inst Electrical Electronics Engineers IncNew YorkEUA, 2000)
Tabu search algorithm for network synthesis
(Institute of Electrical and Electronics Engineers (IEEE), 2014)