The purpose of this basic-science research project was to expand on successfully completed proof-of-concept experiments by, first, determining the scientific basis of and the application of columnar thin films (CTFs) to capture friction ridge, detail found in latent fingerprints on nonporous forensically relevant textured substrates and then to compare CTF development of fingerprints with commonly employed fingerprint development techniques used for that purpose.
"Scale modeling can allow fire investigators to replicate specific fire dynamics at a dramatically reduced cost. A gas burner, liquid pool, wood crib, and polyurethane foam block are used to represent the wide range of fuels that investigators encounter. These fuels are classified into two groups: the burner and liquid pool that reach a semi-immediate steady state (static fires) and the crib and foam that have a fire spread and growth period (dynamic fires). This research examines the proposed scaling method for the static fires. The enclosure consists of a large corridor that provides an interesting challenge due to the presence of partitions at the ceiling. The design fires and the model enclosure are designed based on Froude scaling derived from conservation equations. The eight various sized fires demonstrate acceptable scaling results in the prediction of flame height and temperature at various elevations in the enclosure."--PDF table of contents page.