Polarized proton collisions at 205 GeV at RHIC.

The Brookhaven Relativistic Heavy Ion Collider (RHIC) has been providing collisions of polarized protons at a beam energy of 100 GeV since 2001. Equipped with two full Siberian snakes in each ring, polarization is preserved during acceleration from injection to 100 GeV. However, the intrinsic spin resonances beyond 100 GeV are about a factor of 2 stronger than those below 100 GeV making it important to examine the impact of these strong intrinsic spin resonances on polarization survival and the tolerance for vertical orbit distortions. Polarized protons were first accelerated to the record energy of 205 GeV in RHIC with a significant polarization measured at top energy in 2005. This Letter presents the results and discusses the sensitivity of the polarization survival to orbit distortions.

[Comparative assessment of the value of the veloergometric test and anamnestic data in the diagnosis of coronary artery lesions in persons with pain in the cardiac area]. / Sravnitel'naia otsenka znacheniia veloergometricheskoi proby i dannykh anamneza v diagnostike porazheniia koronarnykh arterii u lits s boliami v oblasti serdtsa.

Clinical, bicycle ergometry and coronographic findings were compared in 161 patients with pains in the heart area. It was shown that patients with the involvement of the coronary arteries could be detected on the basis of anamnestic data and almost as frequently on the basis of the results of the bicycle ergometric test among persons with pains in the heart. In patients with a high probability of the involvement of the coronary arteries on the basis of anamnestic data a negative bicycle ergometric test was often false negative and in patients with a high probability of the absence of the involvement of the coronary arteries on the basis of anamnestic data the positive bicycle ergometric test was often false positive. The development of a typical angina attack during the bicycle ergometric test played the same role in the diagnosis of the involvement of the coronary arteries as a shift of the ST segment on ECG.

[Diagonal crease in the ear lobe in ischemic heart disease]. / Diagonal'naia skladka mochki ukha pri ishemicheskoi bolezni serdtsa.

Patients with coronary heart disease (CHD) show the presence of the diagonal fold of the earlobe both more frequently and in a more pronounced form. The more prominent the changes in the coronary vessels of the heart revealed by coronarography and the lower the tolerance of CHD patients toward exercise, the more frequent and marked the occurrence of the earlobe diagonal fold. The diagnostic use of this simple sign may contribute to an early detection of CHD patients, particularly under conditions of the mass screening of the population.