Atomic Undercoordination in Ag Islands on Ru(0001) Grown via Size-Selected Cluster Deposition: An Experimental and Theoretical High-Resolution Core-Level Photoemission Study

The possibility of depositing precisely mass-selected Ag clusters (Ag-1, Ag-3, and Ag-7) on Ru(0001) was instrumental in determining the importance of the in-plane coordination number (CN) and allowed us to establish a linear dependence of the Ag 3d(5/2) core-level shift on CN. The fast cluster surface diffusion at room temperature, caused by the low interaction between silver and ruthenium, leads to the formation of islands with a low degree of ordering, as evidenced by the high density of low-coordinated atomic configurations, in particular CN = 4 and 5. On the contrary, islands formed upon Ag-7 deposition show a higher density of atoms with CN = 6, thus indicating the formation of islands with a close-packed atomic arrangement. This combined experimental and theoretical approach, when applied to clusters of different elements, offers the perspective to reveal nonequivalent local configurations in two-dimensional (2D) materials grown using different building blocks, with potential implications in understanding electronic and reactivity properties at the atomic level

Globalization and its impacts on vulnerability and on the flexibilization of the labor relationships in health

No processo de globalização, a flexibilização laboral e a vulnerabilidade da população tendem a aumentar. O objetivo deste estudo é analisar a situação do mercado de trabalho no setor saúde à brasileiro luz dos conceitos da vulnerabilidade no contexto da globalização. Foi realizado um estudo sistemático a partir da produção técnico-científica nacional e internacional. Os conceitos de vulnerabilidade foram tomados como base teórica, pois consideram não somente questões pertinentes ao setor saúde como também sua relação com a estrutura e superestrutura social, passível de integrar-se no marco das condições de trabalho desse setor, que em termos das condições de trabalho podem elucidar a formulação de políticas mais humanas aos trabalhadores.In the globalization process, labor flexibilization and the population's vulnerability tend to increase. The purpose of this study is to analyze the situation of the work market in the Brazilian health sector under the light of vulnerability in the globalization context. A systematic study was carried out based on national and international technical and scientific production. The concepts of vulnerability were used as the theoretical base, as they consider not only issues that are pertinent to the health sector, but also to its relationship with the social structure and superstructure, which can integrate with each other in the framework of this sector's work conditions, which, in turn, can elucidate the formulation of policies that are more human for the workers