A rapid method to detect dried saliva stains swabbed from human skin using fluorescence spectroscopy

Saliva on skin is important in forensic trace evidence. If areas where saliva is present can be outlined, this may lead to DNA analysis and identification. This study describes a rapid and non-destructive method to detect dried saliva on the surface of the skin by fluorescence spectroscopy. Eighty-two volunteers deposited samples of their own saliva on the skin of their ventral forearm. A control sample of water was deposited at three different sites on the contralateral arm. Saliva and water control were then allowed to air-dry. Swab samples were taken from dried saliva and control sites and were dissolved in 0.1M KCl solution. Emission spectra were obtained from the solution and were characterized by a principal maximum at 345-355nm with excitation at 282nm. The fluorescence emission intensity was greater than background readings obtained from the control swab site in 80 of 82 volunteers (approximately 97.6%). The fluorescence profile of saliva samples were similar to those obtained from aqueous samples of pure amylase and tryptophan, an endogenous fluorophore in alpha-amylase. The presence of an emission peak at 345-355nm with excitation at 282nm could provide a strong presumptive indication of saliva deposition.     

MNE Affiliation,Firm Size and Exports Revisited: A Study of Information Technology Firms in India

In this study we argue that the export performance of affiliates of multinational enterprises (MNEs) in developing countries is determined differently from that of licensees of foreign firms or of domestic firms. Our empirical results for the information technology sector in India show that exports of MNE affiliates are greater when they have larger foreign equity stakes that bring more tacit knowledge transfer and complementary FDI advantages and when they import more explicit technology from the purchase of licences. Standard export determinants such as firm size and capital intensity do not matter for MNE affiliates, but they do for licensees and domestic firms.     

CHANGING THE DECISION SPACE: EUROPEAN POLICY INFLUENCES ON ENERGY POLICY AND SYSTEMS CHANGE IN SWEDEN

The EU takes a growing interest in governing the energy sector in its member states. Competing with national institutions, policies and organizational structures, it is however not clear whether the EU exerts a strong influence compared to other factors, and if there is such an influence, the mechanisms are not well understood. This paper examines strategic reorientation towards electricity investment in the Swedish energy sector, a ‘frontrunner case’ of Europeanization, and discusses how this change can be attributed to EU policy change, national policy change and organizational field developments respectively. It finds that EU energy policy influence has been notable, and that governance mechanisms that shape beliefs and expectations are strongly at play. However, despite growing EU clout on energy policy, field level and national policy change remain key drivers of the changing decision space in the examined time period.