After recent improvements to the Pavia model of two-nucleon knockout from 16O with electromagnetic probes the calculated cross-sections are compared to experimental data from such reactions. Comparison with data from a measurement of the 16O (e,e’ pn) reaction cross-section shows much better agreement between the experimental data and the results of the theoretical model than was previously observed. In a comparison with recent data from a measurement of the 16O (\( \gamma\) ,pn) reaction cross-section the model over-predicts the measured cross-section at low missing momentum.

Cross sections for the 3 He ð e; e 0 pn Þ 1 H reaction were measured for the first time at energy transfers of 220 and 270 MeV for several momentum transfers ranging from 300 to 450 MeV =c . Cross sections are presented as a function of the momentum of the recoil proton and the momentum transfer. Continuum Faddeev calculations using the Argonne V 18 and Bonn-B nucleon-nucleon potentials overestimate the measured cross sections by a factor 5 at low recoil proton momentum with the discrepancy becoming smaller at higher recoil proton momentum.

Cross sections for the 3He(e,e' pn)1H reaction were measured for the first time at energy transfers of 220 and 270 MeV for several momentum transfers ranging from 300 to 450 MeV/c. Cross sections are presented as a function of the momentum of the recoil proton and the momentum transfer. Continuum Faddeev calculations using the Argonne V18 and Bonn-B nucleon-nucleon potentials overestimate the measured cross sections by a factor 5 at low recoil proton momentum with the discrepancy becoming smaller at higher recoil proton momentum.

D.G. Middleton,* J. R.M. Annand, M. Ases Antelo, C. Ayerbe, P. Barneo, D. Baumann, J. Bermuth, J. Bernauer, H. P. Blok, R. Böhm, D. Bosnar, M. Ding, M.O. Distler, J. Friedrich, J. Garcı́a Llongo, D. I. Glazier, J. Golak, W. Glöckle, P. Grabmayr, T. Hehl, J. Heim, W.H.A. Hesselink, E. Jans, H. Kamada, G. Jover Mañas, M. Kohl, L. Lapikás, I. J. D. MacGregor, I. Martin, J. C. McGeorge, H. Merkel, P. Merle, K. Monstad, F. Moschini, U. Müller, A. Nogga, R. Pérez-Benito, Th. Pospischil, M. Potokar, G. Rosner, M. Seimetz, R. Skibiński, H. de Vries, Th. Walcher, D. P. Watts, M. Weinriefer, M. Weiss, H. Witała, and B. Zihlmann Kepler Centre for Astro and Particle Physics, Physikalisches Institut, Universität Tübingen, D-72076 Tübingen, Germany Department of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, Scotland Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany Nikhef, P.O. Box 41882, 1009 DB Amsterdam, The Netherlands Department of Physics, VU-university, Amsterdam, The Netherlands Department of Physics, University of Zagreb, Zagreb, Croatia M. Smoluchowski Institute of Physics, Jagiellonian University, PL-30059 Kraków, Poland Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum, Germany Department of Physics, Faculty of Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan Institute for Advanced Simulation, Institut für Kernphysik, and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany Institute Jožef Stefan, University of Ljubljana, Ljubljana, Slovenia (Received 6 March 2009; published 7 October 2009)

This paper reports on measurements of the 3 He( e , e ′ pp ) reaction measured at AmPS and the 3 He( e , e ′ pn ) reaction measured at MAMI. The measurements were performed in similar kinematics to allow a comparison to be made between the cross sections of the two reactions. Results are shown for both reactions together with a comparison for the 3 He( e , e ′ pp ) data with continuum Faddeev calculations.

The reaction Li-6(gamma,pi(+))He-6 was studied over the angular range theta(pi)=40-150 degrees with the aim of investigating the halo structure of He-6. Photons from a bremsstrahlung beam were tagged in the energy range E-gamma=170-220 MeV at a resolution of Delta E-gamma=630 keV, and positively charged pions detected using high resolution stacked HpGe detectors. The measured angular distributions for the resolved He-6 ground and 1.80 MeV excited states are compared to previous measurements and theoretical calculations based on the impulse approximation. It is deduced that the ground state rms radius of the He-6 nucleus may be larger than previously thought and that the first excited 1.80 MeV state may also be a halo state.

. This paper reports on the first measurement of the 16 O(e, e'pn) 14 N reaction. Data were measured in kinematics centred on a super-parallel geometry at energy and momentum transfers of 215MeV and 316MeV/ c . The experimental resolution was sufficient to distinguish groups of states in the residual nucleus but not good enough to separate individual states. The data show a strong dependence on missing momentum and this dependence appears to be different for two groups of states in the residual nucleus. Theoretical calculations of the reaction using the Pavia code do not reproduce the shape or the magnitude of the data.

The pathogenic mechanism underlying the vascular changes in Binswanger's encephalopathy (BE) is unknown. To test whether alterations of the humoral immunity may lead to endothelium damage, we analyzed serum levels of anti-brain endothelium antibodies (ABEA) (IgG and IgM) in 16 BE patients, 19 subjects with ischemic vascular disease without mental deterioration and 18 normal healthy subjects. ABEA IgM were found elevated in 1/16 (6%) BE patients and in 4/19 (21%) patients with cerebrovascular diseases; an increase in ABEA IgG was found in 6/16 (38%) BE patients and in 7/19 (37%) cerebrovascular patients. Association with anti-cardiolipin antibodies (IgG and/or IgM) was found in 50% of BE patients with elevated ABEA and only 10% of those with no increase, whereas high titres of anti-neurofilament antibodies (1:10,000) were detected in 40% and 71% respectively. In BE, ABEA IgG but not IgM showed a trend, although not significant, towards a correlation with the duration of the disease (rs = 0.47; p = 0.07) and significantly correlated with the cognitive function as assessed by the Mini mental state (MMS) score (rs = 0.56; p = 0.02). Higher mean values of the MMS score were found in BE patients with elevated ABEA than in those without (p = 0.04). This difference was not due to language disorders neither to an association with stroke risk factors or anti-neurofilament antibodies. However, there were no significant differences in MMS scores between cerebrovascular patients with ABEA and those without. A "neuro-protective" role is hypothesized for the ABEA in the development of dementia in BE.

We report a family with three members affected by a typically X-linked McLeod syndrome. In the proband a very weak positivity for antigens of the Kell group was detected. His sister showed a normal antigenic pattern. We emphasize the prominent neurological picture characterized by a choreic syndrome with atrophy of the caudate nucleus on MRI, psychiatric disturbances, peripheral nerve and muscle biopsy findings indicating slight neuromuscular involvement, and cardiac abnormalities. The differential diagnosis is discussed.

A case of ossification of the posterior longitudinal ligament, documented by spinal X-ray, myelography and CT scanning of the spinal cord is reported. The patient underwent decompressive laminectomy by posterior approach, which was successful. The case is discussed in the light of recent published data.