Beschaeftigungsdauer, Effizienz und Flexibilitaet Ein Beitrag zur Oekonomie des Beschaeftigungsvertrages

Bibliothek Weltwirtschaft Kiel C 151635 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Composition, viscosity and solubility of saleps from twenty different orchid (Orchidaceae) species

The quality of salep depends on its chemical composition, especially its glucomannan content, which varies according to the species. Saleps from 20 different orchid species collected from various regions in Turkey were analyzed for dry matter, ash, protein, glucomannan and starch contents. Moreover, viscosity and solubility of these saleps (1% w/v) in water and milk with different sucrose levels (15-25% w/v) were investigated. Starch and glucomannan contents of the species were found between 4.58-43.98 and 7.84-48.54%, respectively. Saleps obtained from Dactylorhizaromana ssp. georgica, Orchis tridentata and Serapiasvomeracea ssp. vomeracea species were identified as the species that contained the highest glucomannan content (42-48%) which could provide the highest viscosity in water and milk solutions. Additionally, despite having relatively lower glucomannan and starch content (36 and 35%), the water solution made with salep from Himantoglossum affine exhibited high viscosity and suggested that a synergistic effect existed between starch and glucomannan. Saleps from nine orchid species contained more than 40% glucomannan but only three of them exhibited good thickening properties and can provide ideal viscosity in water and milk with the addition of sucrose (658-690 cP)

The Role of Temporary Agency Work in Different Industrial Relations Systems - a Comparison between Germany and the USA

Although temporary agency work has been growing over the last decade, its use differs widely in different industrial relations systems. Drawing on theoretical and empirical insights, propositions are developed on why companies deploy temporary agency work. These propositions are then contrasted with case-study evidence collected in Germany and the USA to analyse the deployment of agency work in two different industrial relations systems and the role that agency work plays in these diverse settings. The main conclusions of the research are that differences in the deployment of temporary agency workers exist with regard to legal regulation and employers' strategies of labour use while similarities exist regarding the supply of agency labour. Copyright Blackwell Publishing Ltd/London School of Economics 2007.