Independance lineaire des valeurs des solutions transcendantes de certaines equations fonctionnelles

Sans résumé     

Induction asymetrique—II: Determination des configurations relatives de δ-amino β-hydroxyesters diastereoisomeres,obtenus par la reaction de reformatsky

Addition of Reformatsky reagents (R₁-CHZnBr-CO₂R) to three β-aminoketones, yields mixtures of threo and erythro diastereomeric aminohydroxyesters. The relative configurations of the first members of each series (R₁CH₃), were determined by chemical correlation. Those of higher homologues (R₁C₂H₅, iC₃H₇,tC₄H₉) are assigned by a study of their NMR spectra.     

Geometry of equilibrium configurations in the Ising model

We derive microscopically precise identities for the geometry of small clusters in the equilibrium states of the two-dimensional Ising model with emphasis on near-critical phenomena.     

Synthesis of difluoromethylthio imidazole from methylthio imidazole

Demethylation of methylthio imidazole 1 via a Pummerer rearrangement onto the corresponding sulfoxide 2 afforded imidazole thiol 4 which was then difluoromethylated with the sodium chlorodifluoroacetate/NaI system in 71% overall yield.     

Simultaneous production of K1o (892) and Δ++(1236) in the reaction K+p→K+π+π−p from 4.3 to 5.0 GeV/c

The reaction $\text{K}{}^{\mathrm{+}}\text{d}\text{→}\text{K}{}^{\mathrm{1o}}\text{(892) Δ}{}^{\mathrm{++}}\text{(1236)}\text{n}{}_{\mathrm{s}}$ from a K⁺d experiment with the CERN 2 m bubble chamber at 4.6 GeV/c is compared with the reaction $\text{K}{}^{\mathrm{+}}\text{p}\text{→}\text{K}{}^{\mathrm{1o}}\text{(892)Δ}{}^{\mathrm{++}}\text{(1236)}$ from a K⁺p experiment at the same energy. In addition, predictions of an absorption model, a Regge pole model and a quark model for the production and decay characteristics of the reaction $\text{K}{}^{\mathrm{+}}\text{p}\text{→}\text{K}{}^{\mathrm{1o}}\text{(892)Δ}{}^{\mathrm{++}}\text{(1236)}$ are tested with the combined statistics of the K⁺d experiment and three K⁺p experiments between 4.3 and 5.0 GeV/c.