The accuracy of two-dimensional echocardiographic left ventricular volume measurement in an isolated heart preparation was tested using Simpson's reconstruction of progressively fewer short-axis cross sections of known location. Echocardiographic images from five ejecting hearts submerged in a special tank were obtained under conditions designed for maximal accuracy of echocardiographic volume ...

Ultra-violet absorption cross sections of isotopically substituted nitrous oxide species: NNO, NNO, NNO and NNO P. von Hessberg, J. Kaiser , M. B. Enghoff, C. A. McLinden, S. L. Sorensen, T. Röckmann, and M. S. Johnson Department of Chemistry, University of Copenhagen, Copenhagen, Denmark Max-Planck Institute for Nuclear Physics, Atmospheric Physics Division, Heidelberg, Germany now at: Departm...

Low temperature mid-infrared cross-sections for peroxyacetyl nitrate (PAN) vapour G. Allen, J. J. Remedios, and K. M. Smith EOS, Space Research Centre, Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK Space Science and Technology Department, Rutherford Appleton Laboratory, Didcot, Oxon, OX11 0QX, UK Received: 7 June 2005 – Accepted: 12 July 2005 – Published: ...

Different fields and disciplines in Science and Technology are imposing more stringent and accurate measurements of the proton and neutron total and differential cross-sections in the intermediate-energy range, from a few dozens of MeV up to a few GeV. Such measurements could be performed in facilities disposing of proton or light ion beams (namely facilities to produce Radioactive Nuclear Beam...

The problem of classifying dynamical systems (flows) with global cross-sections in terms of the associated diffeomorphisms of the crosssections is considered. Suppose that, for i = 1,2, ty is a C flow (r > 0) on the Cr manifold M¡ that admits a global cross-section 5, Q M¡ with associated diffeomorphism ('first return map') d¡. If rank (HX(MX ;Z)) = 1, then (Mx,<j)X) is Cs equivalent (s < r) to...

We treat hadron-hadron collisions where the final state is kinematically of the kind associated with double-pomeron-exchange (DPE) and has large transverse momentum jets. We show that in addition to the conventional factorized (FDPE) contribution, there is a non-factorized (NDPE) contribution which has no pomeron beam jet. Within a simple model we compute DPE-two-jet total and differential cros...

Steel angle sections are frequently employed in bracing systems or truss structures as single members built-up members. Angles may be coupled back-to-back to create Tee cruciform cross-sections. These sensitive torsional and flexural-torsional buckling due the cross-section shape fact that axial force not applied at shear centre. In this work, a comprehensive numerical investigation of behaviou...

In this contribution we summarize experimental information and theoretical results for the dissociation cross sections of charmonium by light hadrons. Theoretical predictions for these RHIC-related processes differ by orders of magnitude over the physically relevant energy range. The results found by the author and collaborators using a constituent interchange model, which predicts cross sectio...

Precision measurements at LEPII provide a unique test of Standard Model predictions. Results from the four LEP collaborations ALEPH, DELPHI, L3 and OPAL on the difermion cross-sections and asymmetries obtained at centre-of-mass energies between 192 and 202 GeV are presented. The high s ′ results are used to determine the running of the electromagnetic coupling constant and the strength of the i...

The UV-visible absorption spectrum of gaseous IONO 2 has been measured over the wavelength range 245–415 nm using the technique of laser photolysis with time-resolved UV-visible absorption spectroscopy. IONO 2 was produced in situ in the gas phase by laser flash photolysis of NO 2 /CF 3 I/N 2 mixtures. Post-flash spectra were deconvolved 5 to remove contributions to the observed absorption from...