Evaluation of Four Fingerprint Development Methods for Touch Chemistry Using Matrix‐Assisted Laser Desorption Ionization/Time‐of‐Flight Mass Spectrometry,

Four preparation techniques for MALDI/TOF mass spectrometry were compared to determine the ability to gather intelligence for investigations through the chemical analysis of latent fingerprints, defined as “touch chemistry.” Compatible fingerprint development processes used for identification along with new techniques are necessary to evaluate touch chemistry. Ten volunteers deposited fingerprints from solvent residues containing drugs and explosives onto microscope slides. The developers included (A) fingerprint powder, (B) MALDI matrix, (C) fingerprint powder and lifting, and (D) cyanoacrylate fuming with fingerprint powder. Qualitative identification was based on ion images and spectra. The highest average detection rates (88%) were found using methods A and B. Methods C (52%) or D (18%) had limited success. Results demonstrate the importance of imaging coupled to extracted mass spectral data in detecting analytes in deposited fingerprints. Overall, the results suggest continued development of touch chemistry applications could prove useful for gathering intelligence and forensically relevant information.     

Social capacity,sustainable development,and older people: Lessons from community-based care in Southeast Asia

While gender has become a central factor in development, age and older people are seldom considered, and many organisations assume a top-down, non-participatory model of care - even when these organisations are otherwise engaged in sustainable and participatory development. This paper looks at how older people have been involved in sustainable community-based care efforts in Southeast Asia, and argues that the key factor for project success is the building of 'social capacity' - the ability of a social group or community to function and care for its older members - which depends on the strategic approach to participation taken by the project.