Identification of the origin area of hematic spots on a crime scene: theoretical analysis
The aim of this work is to generate a theoretical physical analysis that could be used as a tool that facilitates the criminalistic function in its objective of clarifying the truth and helping to impart justice. One of the most studied fields of action in the criminal area is related to the scenes of a crime, in which, generally, there are evidences associated with hematic impressions. A drop of blood, in its way towards the ground, follows a trajectory that can be calculated through the laws of Physics, behaving like a body in a fluid. To the extent that this model is more detailed, the position of the blood drop can be described more precisely. A detailed analysis of the displacement in the air of a drop of blood, generated by a cutting wound, is presented. Results could be used to determine the spatial point of origin of a drop of blood from experimental measurements on the hematic impression in crime scene. The proper estimation of this position could be of great help at the moment of a criminal investigation since could serve as an additional evidence offering a clearer vision of the events that occurred, to the judge.
 P. López Calvo, y P. Gómez Silva, Investigación Criminal y Criminalística 3ed., Bogotá, Temis, 2014.
 J. Montiel Sosa, Criminalística 1 2ed., México, Limusa, 2007.
 M. M. Sniegovski, J. M. Bortolatto, y F. Formolo, “Manchas de Sangre: El análisis de su patrón en la escena del crimen,” Skopein, (14) pp. 1-18, Dic. 2016.
 C. A. Gutiérrez, “Análisis de patrones de manchas de sangre y su importancia en la investigación forense moderna,” Minerva, vol. 2, pp. 74-85, Dic. 2018.
 E. Marieb, Anatomía y fisiología humana, San Francisco, Pearson Educación, 2008.
 J.A.F. Tresguerres, M.A. Villanúa Bernues, y A. López-Calderón Barreda, Anatomía y fisiología del cuerpo humano, España, McGraw-Hill Interamericana de España S.L., 2009.
 M. E. Johll, Química e investigación criminal: Una perspectiva de la ciencia forense. Barcelona, Reverté, 2008.
 S. Brodbeck, “Introduction to Bloodstain Pattern Analysis,” Journal for Police Science and Practice, vol. 2, pp. 51-57, 2012, DOI: https://doi.org/10.7396/IE_2012_E
 R. Murphy Arteaga, Teoría Electromagnética, México, Limusa, 2001.
 T.L. González-Fernández, and A. J. Bravo-Valero. “Minimal distance vector: A new approach to avoid tipover on mobile manipulators.” Iteckne 13.1 (2016): 7-16.
 M. Pasandideh-Fard, Y. M. Qiao, S. Chandra, y J. Mostaghimi, “Capillary effects during droplet impact on a solid surface,” Physics of fluids, vol. 8 (3), pp. 650-659, 1996.
 R. F. Allen, “The role of surface tension in splashing,” Journal of Colloid interface science, vol. 51, pp. 350-351, 1975.
 S. Thoroddsen, y J. Sakakibara, “Evolution of the fingering pattern of an impacting drop,” Phys. Fluids, vol. 10, pp. 1359-1374, 1998.
 H. Y. Kim, Z. Feng, y J. H. Chun, “Instability of a liquid jet emerging from a droplet upon collision with a solid surface,” Phys. Fluids, vol. 12, pp. 531-541, 2000.
 N. Z. Mehdizadeh, S. Chandra, y J. Mostaghimi, “Formation of fingers around the edges of a drop hitting,” Journal of Fluid Mechanics, vol. 510, pp. 353-373, 2004.
 L. Hulse-Smith, N.Z. Mehdizadeh, and S. Chandra, “Deducing Drop Size and Impact Velocity from Circular Bloodstains,” Journal of Forensic Sciences, vol. 50, pp. 1-10, 2005.