Search results for "crime investigation"

Chemistry in Crime Investigation: Sodium Percarbonate Effects on Bloodstains Detection

2011

Chemistry plays a leading role in crime investigation. In the study of bloodstains, chemical reactions provide the means for the detection. All these procedures have been thoroughly studied. However, recently, a new source of error has been found: washing stains with "active oxygen" detergents abrogates presumptive and human hemoglobin tests for bloodstains (although visible). The aim of this investigation was to evaluate the ability of pure sodium percarbonate-main component of detergents-to abrogate presumptive and human hemoglobin tests. Then, a solution to this problem could be found. The results demonstrate that pure sodium percarbonate-itself-is able to abrogate all tests, as well as …

More about the developing of invisible lipstick-contaminated lipmarks on human skin: The usefulness of fluorescent dyes

2006

At the present time fingerprints are one of the simplest, and most reliable means of identification. Increasingly, crime scene investigators look for palm, foot, ear or lip prints. With regard to lip prints, the use, very common today, of protective or permanent lipsticks allow the production an invisible lipmark (or invisible lipstick-contaminated lipmark) which is possible to develop. Some results have already been published about developers useful for different kinds of surfaces (both porous and non-porous) as well as those which are more efficient in case of old or recent prints. The latest studies are about the developing on human skin, and they prove the usefulness of lysochromes (spe…

Studies of satellite-based tracking systems for improving law enforcement : comprising investigation data, digital evidence and monitoring of legality

2014

Kopējās izmeklēšanas grupas kā viens no starptautiskās sadarbības veidiem kriminālprocesā

2013

Elektroniskā versija nesatur pielikumus