Криміналістична техніка та методика

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Browsing Криміналістична техніка та методика by Author "Hrusevych, V.O."

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    Сучасні криміналістичні засоби виявлення потожирових слідів рук людини. MODERN CRIMINALISTIC MEANS OF IDENTIFICATION OF THE LONG-TERM HUMAN BEARINGS
    (2018) Грусевич, В.О.; Hrusevych, V.O.
    Paper is devoted to the study of modern forensic means of detecting traces of human hands on various surfaces in laboratory and extra-ballast conditions. In particular, the focus is on reviewing and analyzing the latest forensic developments, such as alloxan, DFO, ruthenium tetroxide, as well as the products of Sirchie company, which does not contain any foreign DNA. Peculiar features of individual means of detecting finger-prints are highlighted by positive qualities and disadvantages. It is noted that the use in forensic practice of reagents, alloxan and DFO significantly simplifies the process of detecting the finger-prints, since it is a one-stage treatment, which does not require further treatment with metal salts of bivalent metals. On the basis of the study of the stages of the mechanism of practical application of ruthenium tetroxide, it is noted that the process of detecting finger-prints should be carried out in well-ventilated rooms, either under traction or in special closed cells (glass vessels), since the used solution is a weak irritant. It is noted that the advantage of the method of detecting latent finger-prints using tetraoxide ruthenium in its sufficient versatility, ease and speed of detecting latent traces on objects-tracers without pre- training, as well as the possibility of further by use other excellent detection methods. The method also allows the detection of traces on such complex surfaces as heat- sensitive paper, human skin, and a sticky layer of adhesive tapes. According to the results of the analysis of fingerprint powders from Sirchie, it is emphasized that they have a fine-dispersed structure, thereby providing a good sticking to the substance of the tired substance and as a result of the excellent quality of fingerprints of the human hands. This powder can be used on porous, and non-porous surfaces, such as: colored wood, metal, most plastic coatings. According to the results of the research, a number of author’s conclusions, suggestions and generalizations have been suggested.