Oligoelements in dog's chronic hepatitis and liver cirrhosis through dimethylnitrosamine.

By the emission spectrographic analysis, we have searched the following oligoelements: Mn, Cd, Cu, Be, Cr, Ge, Nb, Ga, Zr, W, Pb, Sn, As, Zn, Ag, Sb, Ni, Bi, Co, Mo, and V, in the aortic arterial blood, in the caval, portal and suprahepatic vein blood, in ascite and in the bile, in control and in intoxicated dogs with dimethylnitrosamine (DMNA). Be, Ge, Nb, Ga, W, As, Sb were never found. Increased values of Cu, Mn, Pb, Zn, Ni, Co, Mo and V were noticed.

Study of cardiovascular and auditory pathophysiological implications in a group of operatives working in noisy industrial surroundings.

One third of 160 operatives working in a permanently noisy industrial environment, within the range of 63-8000 Hz and intensity of sound of about 100 db, were found to suffer from a syndrome of neurocirculatory asthenia and 8.1% from arterial hypertension. Study of the ECG according to the criteria of the Minnesota code showed an increased frequency of upward deflection of ST segment (index 9-2) in 20.