Biochemical measurements were carried out on 20 workers entering employment in a lead industry. Blood lead (Pb-B) urinary delta-aminolevulinic acid (ALA), and coproporphyrin (CP) levels were determined before entry and then at approximately weekly intervals for the first 12 weeks of employment. Levels of blood lead began to increase in all men within one week rising from an average pre-employme...

The superconducting transition temperature (T(C)) in nanostructured Pb decreases from 7.24 to 6.4 K as the particle size is reduced from 65 to 7 nm, below which superconductivity is lost rather abruptly. In contrast, there is a large enhancement in the upper critical field (H(C2)) in the same size regime. We explore the origin of the unusual robustness of T(C) over such a large particle size ra...

We re-analyse the data on J/ψ cross sections for proton-nucleus and nucleus-nucleus collisions obtained by the CERN experiments NA38, NA51 and NA50. Our systematic analysis of error propagation shows that the no anomalous suppression of J/ψ in Pb-Pb collisions can be substantiated at 95% confidence limit. The significance of the NA50 result would be enhanced by more precise p-A data on J/ψ cros...

An unprecedented layered Pb-Kemp's triacid compound, Pb3[C6(CH3)3(CO2)3H6]2[DMF]3, has been synthesized. The material exhibits a selective CO2 adsorption, a reversible DMF coordination, and an intercalative hexanal addition reaction. A competing crystallization reaction under solvothermal conditions using Pb(2+) and Cd(2+) with Kemp's triacid reveals higher selectivity of Cd(2+) over Pb(2+).

The present study aimed at presenting the instructional material developed in the Brazilian Portuguese context to apply the Voice Profile Analysis Scheme-VPAS (PB-VPAS) for the perceptual evaluation of voice quality and at reporting preliminary data analyzed from a group of six judges who attended a workshop on VPAS. The adaptation of the VPAS into Brazilian Portuguese was accomplished and the ...

T he use of lead in the electronics industry today accounts for approximately 7% of total lead consumption.' The single largest use of lead is in the manufacture of storage batteries, which accounts for 60% of the total lead produced.2 The use of lead is closely regulated in plumbing, paint and gasoline industries. Currently, the electronics industry has been exempted from the existing requirem...

Results on strange particle production in Pb-Pb collisions at 158 and 40 A GeV/c beam momentum from the NA57 experiment at CERN SPS are presented. Particle yields and ratios are compared with those measured at RHIC. Strangeness enhancements with respect to p-Be reactions at the same beam momenta have been also measured: results about their dependence on centrality and collision energy are repor...

We compare the Pegg-Barnett (PB) formalism with the covariant phase observable approach to the problem of quantum phase and show that PB-formalism gives essentially the same results as the canonical (covariant) phase observable. We also show that PB-formalism can be extended to cover all covariant phase observables including the covariant phase observable arising from the angle margin of the Hu...

The azimuthal correlations of D mesons with charged particles were measured with the ALICE apparatus in pp collisions at [Formula: see text] and p-Pb collisions at [Formula: see text] at the Large Hadron Collider. [Formula: see text], [Formula: see text], and [Formula: see text] mesons and their charge conjugates with transverse momentum [Formula: see text] and rapidity in the nucleon-nucleon c...