Experimental realization of optimal noise estimation for a general Pauli channel.

We present the experimental realization of the optimal estimation protocol for a Pauli noisy channel. The method is based on the generation of 2-qubit Bell states and the introduction of quantum noise in a controlled way on one of the state subsystems. The efficiency of the optimal estimation, achieved by a Bell measurement, is shown to outperform quantum process tomography.

[Alcoholism and pregnancy]. / Alcolismo e gravidanza.

The T-ACE test, introduced by Sokol, is currently used in the screening of the pregnant women at risk for alcohol abuse. In this study, this test has been applied to a group of 150 pregnant women to verify the congruity of the methodology used, sensitivity and specificity of the test. According to the answers given by the patients in the preliminary interview, 9 patients (6%) proved at risk for alcohol abuse. At the subsequent, control, interview, the answers given were all in agreement with the data obtained with the T-ACE test. The results obtained confirmed the high sensitivity and specificity of this method. Even though the comprehension of the utilized verbalization was excellent, nevertheless the test, applied to patients of a different culture in comparison with that studied by Sokol, cannot be applied in its original form, but must be diluted within a group of questions.

[Lipid-metabolic and blood coagulation factors in chronic peripheral arteriopathies]. / Su alcuni fattori lipido-metabolici ed emocoagulativi nelle arteriopatie croniche periferiche.

The authors have tested serum levels of cholesterol, triglycerides, HDL-cholesterol and LDL-cholesterol, with the plasmatic levels of Antithrombin III and other parameters (Quick time, PTT, fibrinogenaemia and platelets) in patients affected by chronic obstructive arterious diseases in various stages including a group of patients affected by diabetes mellitus. The results show that there is a correlation between the behaviour of the parameter tested and the follow-up of the diseases, particularly for HDL and LDL cholesterol and Antithrombin III. The authors suggest the use of these tests for monitoring this kind of vascular peripheral diseases.