Temporary workers already represent a relevant percentage of the total workforce in several European countries. This type employment is usually associated with more precarious contractual and working conditions. situation can lead to negative outcomes terms workers’ physical mental health. According Job Demands-Resources (JD-R), temporary reduce number available resources health problems. resea...

Nowadays, hair care and style play a very important role in people’s physical aspect and self-perception. Hair cosmetics can be distinguished into two main categories: cosmetics with temporary effect on the hair, for example shampoos, conditioners, sprays, and temporary colors; and cosmetics with permanent effect on the hair, such as permanent waves, relaxers, bleaches and permanent colors. The...

Integrity constraints are usually assumed to be permanent properties that must be satissed by any database state. However, there are many situations requiring also temporary constraints, that is, constraints that must hold only for a single database state. In this paper we propose a schema to deene both permanent and temporary constraints, that supports eecient constraint checking and semantic ...

Procyclical absenteeism might be due to higher sick-rates of marginal workers, or a consequence of procyclical sick-report incentives. These hypotheses predict opposite signs for the correlation between sick-rates and shares of temporary contracts. This is the case, when the share of temporary contracts is a proxy for the share of marginal workers, and an indicator of stronger incentives for jo...

INTRODUCTION The aim of this study was to evaluate the effects of eugenol-free temporary cement's remnants on the retentive strength of full metal crowns luted via zinc phosphate and resin cement (Maxcem) to the tooth structure. MATERIALS AND METHODS Forty complete standardized Ni-Cr crowns in four groups were cemented by two types of permanent cements: zinc phosphate cement and resin cement ...

Tooth formation begins with the bud stage during which the dental lamina (derived from epithelial tissue) produces a series of tooth buds along its buccal margin. This is followed by the cap stage in which a coned structure, termed the enamel organ, is formed by an invagination of mesenchymal tissue into the tooth bud. All deciduous teeth and permanent molars are derived from the enamel organ o...