ABSTRACT
AIM: to elucidate relationship between parameters of negative ischemic stress test and subclinical atherosclerosis of carotid arteries. MATERIAL AND METHODS: Electrocardiographic stress test on treadmill and ultrasound study of carotid arteries (CA) were carried out in 204 patients (100women and 104 men, mean age 54.16+/-8.07 years without verified ischemic heart disease and with more or equal 1 traditional factors of cardiovascular risk). Measurements of intima media thickness (IMT) in three extracranial CA segments and identification of atherosclerotic plaques (AP) were used for detection of subclinical atherosclerosis. CA total atherosclerotic plaque area (TAPA) was calculated when appropriate. RESULTS: Multifactorial regression analysis revealed the following predictors of increased IMT and TAPA: physical working capacity, increment and reserve of heart rate (HR), HR restoration, and increment of systolic arterial pressure (SAP). Presence of atherosclerotic plaque was associated with SAP rise >42% during exercise test and slow HR restoration ( less or equal 42 bpm at 2-nd minute of recovery period). CONCLUSION: Analysis of nonelectrocardiographic parameters of negative relative to ischemia induction exercise test allows predicting severity of atherosclerotic changes in CA. The information obtained can supplement assessment of traditional factors of cardiovascular risk.
ABSTRACT
The K0 meson production by pi(-) mesons of 1.15 GeV/c momentum on C, Al, Cu, Sn, and Pb nuclear targets was measured with the FOPI spectrometer at the Schwer-Ionen-Synchrotron accelerator of GSI. Inclusive production cross sections and the momentum distributions of K0 mesons are compared to scaled elementary production cross sections and to predictions of theoretical models describing the in-medium production of kaons. The data represent a new reference for those models, which are widely used for interpretation of the strangeness production in heavy-ion collisions. The presented results demonstrate the sensitivity of the kaon production to the reaction amplitudes inside nuclei and point to the existence of a repulsive KN potential of 20+/-5 MeV at normal nuclear matter density.
ABSTRACT
We present a complete systematics (excitation functions and system-size dependences) of global stopping and side flow for heavy ion reactions in the energy range between 0.09A and 1.93A GeV. For the heaviest system, Au+Au, we observe a plateau of maximal stopping extending from about 0.2A to 0.8A GeV with a fast drop on both sides. The degree of stopping, which is shown to remain significantly below the expectations of a full stopping scenario, is found to be highly correlated to the amount of side flow.