Impact of uniaxial strain and doping on oxygen diffusion in CeO2

Doped ceria is an important electrolyte for solid oxide fuel cell applications. Molecular dynamics simulations have been used to investigate the impact of uniaxial strain along the directions and rare-earth doping (Yb, Er, Ho, Dy, Gd, Sm, Nd, and La) on oxygen diffusion. We introduce a new potential model that is able to describe the thermal expansion and elastic properties of ceria to give excellent agreement with experimental data. We calculate the activation energy of oxygen migration in the temperature range 900-1900K for both unstrained and rare-earth doped ceria systems under tensile strain. Uniaxial strain has a considerable effect in lowering the activation energies of oxygen migration. A more pronounced increase in oxygen diffusivities is predicted at the lower end of the temperature range for all the dopants considered

Burnout and Related Factors among Hospital Nurses

Burnout and Related Factors among Hospital Nurses: Kazuyo HIGASHIGUCHI, et al. Department of Nursing, Kanazawa Medical University—The overall goal of this study is to examine the relationship between burnout in hospital nurses and three parameters: occupational factors, individual attributes, and workplace stressors. Two hundred and sixty-eight female nurses from two public general hospitals were surveyed. Three forms were used: first, a demographic data form to ascertain personal attributes; second, the Japanese version of the Maslach Burnout Inventory (MBI) to assess burnout; and third, the Japanese version of the Job Content Questionnaire (JCQ) to assess workplace stressors. The Japanese version of MBI consists of three subscales: Physical Exhaustion (PE), Emotional Exhaustion/ Depersonalization (EE+DP), and Personal Accomplishment (PA). The results were as follows: 1. There was a significant correlation between both PE and EE+DP and years of nursing experience, as well as the age of children. 2. There was a significant correlation between PE and the work schedule or workplace. 3. There was no significant correlation between the Japanese MBI subscales and job rank, marital status, or the number of children. 4. There was a significant correlation between the three subscales of Japanese MBI and the Japanese JCQ scales. These findings are discussed