These are able to initiate the polymerization of styrene and the polystyrene anions in turn initiate the polymerization of the first two monomers; for the pairs vinylpyridine-styrene and 1,2-dihydronaphthalene-styrene it is possible to obtain copolymers with a great number of alternating sequences....
Fourty right-handed brain-damaged subjects (20 left-and 20 right-injured; 8 patients with a visual field defect in each group) were submitted to a matching task of facial expressions under various conditions of photographic clearness. Results indicate that right-damaged subjects, particularly with ...
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The thermal and mechanical properties of final materials were studied in order to determine the influence of microstructure on their properties.Alain RonzanoBibliogr
doi:10.1016/j.rpemd.2015.10.064Rita Azenha CardosoRicardo GrazinaLia JorgeMaria Manuela CarrilhoRevista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial
The reaction of alkali metals with tertiary alkyl nitriles eventually gives, after protonation, an imine. α-tert-Alkylketones are produced by the hydrolysis of these imines. This reaction, involving radical anion intermediates, is a simple method for the synthesis of highly hindered symmetric ...
FibroblastsMyocytes, CardiacExtracellular MatrixCardiomegalyExerciseSignal TransductionMechanotransduction, CellularMechanical stress on the heart can lead to crucially different outcomes. Exercise is beneficial because it causes heart muscle cells to enlarge (hypertrophy). Chronic hypertension also causes ...
Objective Upper urinary tract urothelial cell carcinomas (UUT-UCCs) are rare but usually invasive at diagnosis. Early diagnosis of UUT-UCCs is thus warranted. UUT has the same embryological origin with bladder and BLCA-4 is a highly sensitive and specific marker for bladder cancer. We intend ...
Canadian Journal of BotanyCoulaud, J. 1989. Comparaison de quelques Loganiacees a l'aide des caracteres quantitatifs et qualitatifs de l'anatomie du bois. Can. 1. Bot. 67: 872-878.Coulaud, J. 1989. Comparaison de quelques Loganiacees a l'aide des caracteres quantitatifs et qualitatifs...
From dialysis equilibrium and viscosity measurements, it has been established that, whatever the respective lengths of the sequences are, these stable systems consist of a dispersed “phase” — containing the compolymer molecules — surrounded by an continuous “phase”. Both “phases” are ...