Limits on light-speed anisotropies from Compton scattering of high-energy electrons.

The possibility of anisotropies in the speed of light relative to the limiting speed of electrons is considered. The absence of sidereal variations in the energy of Compton-edge photons at the European Synchrotron Radiation Facility's GRAAL facility constrains such anisotropies representing the first nonthreshold collision-kinematics study of Lorentz violation. When interpreted within the minimal standard-model extension, this result yields the two-sided limit of 1.6×10(-14) at 95% confidence level on a combination of the parity-violating photon and electron coefficients (κ(o+))(YZ), (κ(o+))(ZX), c(TX), and c(TY). This new constraint provides an improvement over previous bounds by 1 order of magnitude.

[Immune disorders and chronic exposure to organic solvents. Case-control study in the operators who are in organic synthesis laboratories]. / Disordini immunitari ed esposizione cronica a solventi organici. Studio caso--controllo in operatori afferenti a laboratori di sintesi organica.

The industrial society characterized by the continuing innovation in science and technology has resulted in the introduction of new business cycles chemicals which could act as "triggers" for the initiation of alterations, still latent in the clinical aspect, dependents the immune system in people who are professionally exposed. In recent years, numerous studies have shown over exposed to organic solvents some immunological abnormalities, regarding, for example: complementemy, immunoglobulinic classes, typing lymphocyte (CD3, CD4, CD8) and appearance anti-nucleo of antibodies (ANA). Our study was conducted, in health surveillance, of operators of the University of Palermo, on a sample of subjects who were exposed to organic solvents and compared with a control group not exposed, considering some parameters such as possible indicators of Immunological Trim disturbance.

[Theory models of burnout: aspects of risk assessment and preventives measures in health care operators]. / Modelli teorici del burnout: aspetti di valutazione del rischio e provvedimenti di ordine preventivo in operatori sanitari.

The figures appointed to prevention is to assess all the risks and working notes that the more complex when you take into consideration the risks related to the organization of work, especially in certain types of work in which a proper assessment can not ignore the intrinsic problems of the job done. The studies that have been employed in particular health professions speak of a phenomenon of job stress response called "Syndrome Burnout." Our study includes a description of current research, in literature, made on the issue and particularly on the theoretical models of Burnout (Models of competence / effectiveness--psychosocial Models--phases of Burnout); Below is sought to draw in some health care workers, "the individual characteristics" of the subjects that I am concerned, identify the causes and effects, outline proposals for action for risk assessment, defining prevention measures, for the early identification of symptoms, acting on variables that affect the occurrence of the syndrome.