Two photon production of hadronic resonances is one of the clearest ways of revealing their composition, as illustrated in Fig. 1. The nature of the isoscalar scalars seen in ππ scattering below 2 GeV, the f0(600) or σ, f0(980), f0(1370), f0(1510), f0(1720), · · ·, remains an enigma [1,2]. While models abound in which some are qq, some qqqq, sometimes one is a KK-molecule, and one a glueball, d...

A comparative study of the resonance Raman spectra of a number of hemoproteins with excitation in the Soret region reveals features that characterize the valence and spin state of the iron. (a) The frequency of the strongest band in the spectra for reduced (ferrous) hemoproteins always occurs between 1356 and 1361 cm-l, whereas for oxidized (ferric) proteins it occurs between 1370 and 1378 cm-l...

We discuss the theoretical expectations and phenomenological evidence for the lightest glueballs and the members of the meson nonet with quantum numbers J = 0. We reconsider the recent evidence for candidate states with masses below ∼1700 MeV, but include also the results from earlier phase-shift analyses. Arguments are presented to classify the scalars f0(980) and f0(1500) as members of the 0 ...

1 Baker, P. F., A. L. Hodgkin, and T. I. Shaw, Nature (London), 190, 885 (1961). 2 Oikawa, T., C. S. Spyropoulos, I. Tasaki, and T. Teorell, Acta Physiol. Scan., 52, 195 (1961). 3Tasaki, I., A. Watanabe, and S. Takenaka, these PROCEEDINGS, 48, 1177 (1962). 4Mueller, P., J. Gen. Physiol., 42, 163-191 (1958). 6 Cole, K. S., and H. J. Curtis, J. Gen. Physiol., 22, 649-670 (1939). 6 Segal, J. R., N...

Lattice QCD predictions have motivated several recent studies of the mixing between the predicted J = 0++ glueball and a qq̄ nonet in the 1.3 → 1.7 GeV region. We show that results from apparently different approaches have some common features, explain why this is so and abstract general conclusions. We place particular emphasis on the flavour dependent constraints imposed by decays of the f0(13...

In the present research, the titanium-catalyzed ethylene dimerization and more specifically, the concomitant byproducts and polymer formation have been studied in the presence of 2,5-dimethoxytetrahydrofuran as an electron donor compound in the combination with triethylaluminium (TEA) as activator. Then, we added ethylene chlorobromide as a new efficient promoter to the relevant catalyst system...

In this paper we study a very general quadratic integral equation of fractional order. We show that the quadratic integral equations of fractional orders has at least one monotonic solution in the Banach space of all real functions defined and continuous on a bounded and closed interval. The concept of a measure of noncompactness related to monotonicity, introduced by J. Banaś and L. Olszowy, a...

Stop-loss reinsurance is one type of reinsurance contract that has attracted recent attention. In the simplest form of this contract, a reinsurer agrees to pay all losses of the insurer in excess of an agreed limit. This paper concerns the computation of bounds on the stop{loss premium when the loss distribution is unknown, but information about past claim experience is available in the form of...

microen~bolism in experimental shock. An electron microscopic study. Am J Path 52:391-400, 1968 10 Schramel R, Schmidt F, Davis F, et al: Pulmonary lesions produced by prolonged partial perfusion. Surgery 54224231, 1963 11 Rosky LP, Rodman T: Medical progress: Medical aspects of open-heart surgery. N Engl J Med 274:833-840, 1966 12 Pulmonary microembolism. Leading articles, Lancet 1:429-431, 19...

Based on previous papers I discuss how I understand the lightest scalars using a general coupled channel model. This model includes all light two-pseudoscalar thresholds, constraints from Adler zeroes, flavour symmetric couplings, unitarity and physically acceptable analyticity. One finds that with a large coupling there can appear two physical resonance poles on the second sheet although only ...