Phys.Rev.Lett.86:2529-2532,2001 We present a measurement of the polarization observed for bottomonium states
produced in p-Cu collisions at sqrt(s)=38.8 GeV. The angular distribution of
the decay ...dimuons of the Upsilon(1S) state show no polarization at small xF and
pT but significant positive transverse production polarization for either pT >
1.8 GeV/c or for xF > 0.35. The Upsilon(2S+3S) unresolved states show a large
transverse production polarization at all values of xF and pT measured. These
observations are compared with an NRQCD calculation that predicts a transverse
polarization in bottomonium production arising from quark-antiquark fusion and
gluon-gluon fusion diagrams.
Phys.Rev.Lett.84:3256-3260,2000 Measurements of the suppression of the yield per nucleon of J/Psi and Psi'
production for 800 GeV/c protons incident on heavy relative to light nuclear
targets have ...been made with very broad coverage in xF and pT. The observed
suppression is smallest at xF values of 0.25 and below and increases at larger
values of xF. It is also strongest at small pT. Substantial differences between
the Psi' and J/Psi are observed for the first time in p-A collisions. The
suppression for the Psi' is stronger than that for the J/Psi for xF near zero,
but becomes comparable to that for the J/Psi for xF > 0.6.
Generalized arterial calcification in infancy is a rare disorder in which death usually occurs in infancy, the diagnosis generally being made at autopsy. Three patients are reported. The diagnosis ...was made during life in two, enabling new information to be collected. Cardiac catheterization in one provided evidence suggesting stiffness of pulmonary and systemic arterial walls. Another is a long-term survivor with spontaneous regression of calcification. The third case, diagnosed at necropsy, was associated with endocardial fibroelastosis.
Phys.Rev.Lett.83:2304-2307,1999 A precise measurement of the ratios of the Drell-Yan cross section per
nucleon for an 800 GeV/c proton beam incident on Be, Fe and W targets is
reported. The behavior ...of the Drell-Yan ratios at small target parton momentum
fraction is well described by an existing fit to the shadowing observed in
deep-inelastic scattering. The cross section ratios as a function of the
incident parton momentum fraction set tight limits on the energy loss of quarks
passing through a cold nucleus.
We present measurements of the polarization of the \( J/\psi \) produced in 800-GeV proton interactions with a copper target. Polarization of the \( J/\psi \) is sensitive to the \( c \bar{c} \) ...production and hadronization processes. A longitudinal polarization is observed at large \( x_{F} \), while at small \( x_{F} \) the state is produced essentially unpolarized or slightly transversely polarized. No significant variation of the polarization is observed versus \( p_{T} \).
Although left ventricular outflow tract obstruction is commonly associated with congenitally corrected transposition of the great vessels, this obstruction is seldom caused by accessory mitral valve ...tissue. Three cases in which accessory mitral valve tissue caused left ventricular outflow tract obstruction in children are described. Two had congenitally corrected transposition and one had normally connected great vessels. The accessory leaflet tissue, which was identified by echocardiography and angiography, was attached by chordae tendineae to normally sited papillary muscles and herniated into the left ventricular outflow tract during systole. Operation was successful in these patients. The accessory valve tissue was excised via an arteriotomy in the great vessel that arose from the left ventricle. The obstructive tissue was excised close to its peripheral attachments in the outflow tract and its chordae tendineae were divided. Resection was performed without injury to the abnormally placed conduction system or to the normal valve structures.
A general route to organic-inorganic hybrids with nanophase morphologies has been elaborated with the objective of ultimately generating nanoporosity in organosilicates. Hyperbranched block ...copolymers prepared by either the sequential or concurrent polymerization of an ABC monomer (I3-(Im-caprolactone) 2-bromo-2-dimethylpropionate) with a BCD monomer (2-hydroxyethyl methacrylate) were used as the macromolecular templates. The two monomers, each polymerizing by different chemistries, for example ring-opening polymerization and atom transfer radical polymerization, bear initiating centres that are targeted for the functionality located on the accompanying monomer. Consequentially, a branched polymer is obtained which avoids the traditional multistep procedures. The branching density was altered simply by the addition of the appropriate AB (Im-caprolactone) and/or CD (methyl methacrylate) comonomers. These polymers were readily soluble initially in the organosilicate prepolymer (methyl silsesquioxane).
A panel of 40 monoclonal antibodies was constructed in response to cationic endothelial cell growth factor (c-ECGF), the cationic peptide mitogen isolated from endothelial mitogen. The monoclonal ...antibodies were assayed by dot blot for immunoreactivity to various other peptide angiogenic factors. The panel of monoclonal antibodies to c-ECGF exhibited complete cross-reactivity with pituitary fibroblast growth factor and sarcoma-derived growth factor. A group of 28 monoclonal antibodies was found to exhibit reactivity to anionic endothelial mitogen (a-ECGF), brain fibroblast growth factor, endothelial cell growth factor, and retina-derived growth factor. None of the monoclonal antibodies was found to react with epidermal growth factor or platelet-derived growth factor. These data provide an immunological basis for grouping heparin-binding endothelial cell growth factors into anionic and cationic groups.
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