Suggestion for a dibaryon resonance in the pp system

The existence of a diproton resonance is indicated by the energy dependence of Legendre expansion coefficients of P dσ/dΩ for pp elastic scattering and the structure appearing in the data of Δσ_L = σ^Tot() − σ^Tot(→). The properties of such a resonance are described.     

Structure in momentum-transfer for (pπ−) systems produced in diffractive dissociation of neutrons on protons

The four-momentum transfer distribution of (pπ^?) systems produced in the neutron dissociation reaction n + p → (pπ^?) + p has substantial structure which depends strongly on the mass and on the angular decay properties of the produced (pπ^?) system. No significant energy dependence is observed in the data for incident neutrons in the momentum range between 50 GeV/c and 300 GeV/c. The results are compared with a Deck-type of model.     

Dissociation of acids in aqueous micellar systems

Incorporation in charged micelles induces large pKa shifts for a number of acids of varying type. Analysis of the measurements in terms of simple electrostatic theory is reasonably satisfactory in view of uncertainties regarding the net charge on the micelle and the exact character of its surface. The behavior of the long-chain fatty acids, whose mode of incorporation in micelles is least uncertain, confirms the suggestion of others that the effective dielectric constant at the micellar surface is quite low.     

Derivation of a 3D pharmacophore model for the angiotensin-II site one receptor

Summary A systematic search has been used to derive a hypothesis for the receptor-bound conformation of A-II antagonists at the AT₁ receptor. The validity of the pharmacophore hypothesis has been tested using CoMFA, which included 50 diverse A-II antagonists, spanning four orders of magnitude in activity. The resulting cross-validated R² of 0.64 (conventional R² of 0.76) is indicative of a good predictive model of activity, and has been used to estimate potency for a variety of non-peptidyl antagonists. The structural model for the non-peptide has been compared with respect to the natural substrate, A-II, by generating peptide to non-peptide overlays.     

The Group of Galois Extensions Over Orders in

In this paper we characterize all Galois extensions over where is an arbitrary -Hopf order in . We conclude that the abelian group of -Galois extensions is isomorphic to a certain quotient of units groups in . This result generalizes the classification of -Galois extensions, where , due to Roberts, and also to Hurley and Greither.