Some consequences of MA + ¬wKH

Let wKH denote the following statement: There exists a ω₁-tree of power ω₁ with >ω₁ ω₁-branches. First, using methods of [6] and [13], we shall prove theconsistency of MA + ¬wKH. Then we shall prove that MA + ¬wKH implies the following: (a) There is no θ-dense (splitting) poset of power ω₁; (b) Every LOTS of density ω₁ has a θ-disjoint π-base; (c) There is no Baire LOTS of power ω₁ without isolated points; (d) Every perfectly normal non-Archimedian space of weight ω₁ is metrizable. These results are connected to problems from [4], [10], [7] and [15], respectively. A part of these results was announced in [17].     

Upper limits on parity-violating terms in nuclear electromagnetic operators and nuclear structure effects

Parity-violating (PV) nuclear experiments offer a suitable tool for investigating parity conservation in the electromagnetic interaction of nucleons. It has been estimated that PV electromagnetic vertices induced by weak interactions are very small. Thus, any sizeable PV nucleon electromagnetic couplings indicate the presence of a genuine PV electromagnetic interaction. The upper limit to such a PV electromagnetic interaction can be estimated from the existing experimental value for the circular polarization of γ-rays emitted in the radiative capture of a thermal neutron (n+p → d+γ). This estimate is consistent with the value for the circular γ-polarization measured in deformed nuclei (¹⁸¹Ta, ¹⁷⁷Hf). Useful additional information can be extracted from the measurement of the γ-asymmetry in the n+p → d+γ reaction and from the measurements of circular polarization in the decays of selected spherical nuclei (²⁰³Tl, ¹¹¹In, ⁶³Cu). Extensive theoretical analysis taking into account nuclear structure effects shows that the decay of ⁶³Cu is particularly suitable for this purpose.     

Transport des CaO im Lichtbogenplasma

Transport of the excited CaO molecules, formed in the reaction between a small quantity of Ca atoms and oxygen in DC arc plasma, was followed by a high-speed camera. Axial transport velocities of substances were measured. The diffusion coefficient was determined from the distributions of the intensity of light and their time dependence (found by photometric measurements). The calculation of the diffusion coefficient was performed by using the equation corresponding to the spherical diffusion.     

Über den Stetigkeitsmodul von Fourier-Reihen mit monotonen Koeffizienten

Ohne Zusammenfassung     

Bericht über das „Symposium on Coagulation and Coagulant Aids“ vom 1. bis 3. April 1963 in Los Angeles,Cal. (USA)

Ohne Zusammenfassung     

Difference equations in statistical mechanics. II. Solid-on-solid models in two dimensions

A review and some new results are presented for the solid-on-solid models of wetting in two dimensions (i.e., line interfaces) with an emphasis on the difference equations arising in the transfer matrix calculations for these models. Methods for solving the appropriate difference equations exactly or approximately are surveyed, including specific results for short-range, long-range power-law, and applied field-like (binding) external potentials.