RESUMEN
The hair of man is one of the complicated objects of investigation in forensic medicine expertise. The purpose of this research was to determine the significance of specific gravity of grey, pigmented, thin and thick hairs from head in identification of personality. The specific gravity and diameter of 10 grey, 10 pigmented and 10 thick and 10 thin hairs were investigated in seven men. The diameter of the hair plays a significant role in determination of the body area from which the hair may have arisen. The obtained data were statistically analyzed. The specific gravity fluctuations of grey hair in each of investigated persons was: 0,58-0,65; 1,81-1,92; 1,26-1,33; 0,86-0,92; 1,56-1,66; 2,25-2,34; 2,00-2,08 10(4) H/m(3). The specific gravity fluctuations of pigmented hair in each of seven persons was: 0,57-0,64; 1,80-1,92; 1,27-1,37; 0,87-0,93; 1,57-1,66; 2,26-2,34; 1,99-2,08 10(4) H/m(3). It was concluded that establishment of specific gravity of grey and pigmented hairs from head is vital for forensic medicine.
Asunto(s)
Medicina Legal/métodos , Color del Cabello , Cabello/anatomía & histología , Densitometría , Humanos , Rayos Láser , Pesos y MedidasRESUMEN
Evaluation of the height from which human fell from his/her tissue and organ injuries is discussed. The authors of available publications paid the principal attention to estimation of the height from which the victim fell without consideration for the kinetic energy of the body, which depends not only on the height from which the victim fell, but on his/her body weight as well. Primary external and primary internal injuries are distinguished, which are determined by the area of contusion during landing; secondary contact injuries which form during inertial movement of the body after the first contusion, and injuries due to negative acceleration during contusion when landing (so-called signs of total body concussion) are also distinguished. The totality of all listed injuries helps estimate the total kinetic energy at the moment of contusion and determine the height of falling, with due consideration for anthropometric characteristics of the victim.
Asunto(s)
Accidentes por Caídas , Fenómenos Biomecánicos , Medicina Legal , HumanosRESUMEN
Differential thermal and thermogravimetric analyses (DTA and TGA, respectively) of hairs at temperature range of 20 to 250 degrees C were carried out to determine the age and sex. Results of DTA and TGA unambiguously indicate that rhombic modification of sulphur (alpha-S) predominates in female hairs, whereas the monoclinal one (beta-S) prevails in male hairs whatever the age of examinees, that is, the sex can be identified with the use of these characteristics.