Lambda spectra in 11.6A GeV/c Au-Au collisions.

E896 has measured Lambda production in 11.6A GeV/c Au-Au collisions over virtually the whole rapidity phase space. The midrapidity p(t) distributions have been measured for the first time at this energy and appear to indicate that the Lambda hyperons have different freeze-out conditions than protons. A comparison with the relativistic quantum molecular dynamics model shows that while there is good shape agreement at high rapidity the model predicts significantly different slopes of the m(t) spectra at midrapidity. The data, where overlap occurs, are consistent with previously reported measurements.

Psychosocial risk factors for coronary heart disease, their importance compared with other risk factors and gender differences in sensitivity.

BACKGROUND: Few studies have focused on risk factors in women's lives concerning psychosocial factors and coronary heart disease (CHD). The present study is one of a series in which a wide range of psychosocial factors will be analysed with a focus on women. Women and men have been compared with respect to sensitivity to psychosocial risk factors regarding CHD. The importance of psychosocial risk factors for women, compared with biomedical risk factors has also been studied. METHODS: A questionnaire (The Stress Profile) was answered by 538 rehabilitation participants (97 women, 441 men) and a reference group (5308 women, 5177 men), aged 40-65 years. Psychosocial factors were investigated using means and b-coefficients. Comparisons between psychosocial and biomedical risk factors were made, with respect to the product of the beta-coefficient and the standard deviation for each compared risk factor. RESULTS: Significant differences appeared concerning five areas: work content, workload and control, physical stress reactions, emotional stress reactions and burnout. All showed that the relative sensitivity was larger for women than for men. Predictive psychosocial risk factors for women with respect to CHD were physical stress reactions, emotional stress reactions, burnout, family relationships and daily hassles/satisfactions, and they were on approximately the same level as biomedical risk factors. CONCLUSIONS: Women appear to be more sensitive than men with respect to psychosocial risk factors for CHD, and the predictive ability of psychosocial risk factors shows great importance. Actions against unhealthy psychosocial conditions are recommended. Both presumptive CHD patients and others might benefit from preventive actions, and since women are more sensitive they will probably gain more than men.

Inclusive dielectron cross sections in p + p and p + d interactions at beam energies from 1.04 to 4.88 GeV.

Measurements of dielectron production in p + p and p + d collisions with beamkinetic energies from 1.04 to 4.88 GeV are presented. The differential cross section is presented as a function of invariant pair mass, transverse momentum, and rapidity. The shapes of the mass spectra and their evolution with beam energy provide information about the relative importance of the various dielectron production mechanisms in this energy regime. The p + d to p + p ratio of the dielectron yield is also presented as a function of invariant pair mass, transverse momentum, and rapidity. The shapes of the transverse momentum and rapidity spectra from the p + d and p + p systems are found to be similar to one another for each of the beam energies studied. The beam energy dependence of the integrated cross sections is also presented.