Effective nonlinearity of the new quaternary chalcogenide crystal BaGaGeSe.

The unknown magnitude and relative signs of the trigonal crystal ${\rm BaGa}_{2}{\rm GeSe}_{6}$BaGaGeSe nonlinear coefficients have hindered defining an optimum orientation for maximum frequency conversion efficiency. This issue is resolved in the present work, obtaining ${d_{11}}= + {23.6}$d=+23.

Frequency conversion of molecular gas lasers in PbInTe crystal within mid-IR range.

PbInTe is a new mid-infrared (IR) nonlinear crystal with a very wide transparency range from 1.7 up to 31 μm. Calculated phase-matching angles show possibility of frequency conversion throughout the transparency range.

[A method for the re-embedding of tissues from paraffin blocks into epoxy resins for the study of stained semithin sections by electron microscopy].

The proposed method or re-embedding tissue specimens from paraffin in epoxy resins (epon, araldite, etc.) permits study of the same material at histo-, cyto-, and ultrastructural levels by modern morphological methods and thus detecting a number of additional morphological signs important for thanatogenesis. The proposed method provides objective results and improves the quality of forensic medical studies in general.

[The ultrastructural indices of the morphofunctional state of the heart in acute and chronic alcoholic intoxication].

Morphofunctional myocardial characteristics in subjects who died of acute and chronic alcoholic intoxication were studied at ultrastructural level. The resulting new data enhance the level of diagnosis concerning the cause of death, the grounds of thanatogenesis. Possibilities for using the results of investigation in scientific and practical work are shown.

[Ultrastructural changes in the skin in fatal electrical trauma].

The study was performed on 20 guinea-pigs. The animals were injured by alternating current at 380 and 220 V. The developing destructive alterations were characterized by histological, histochemical and electron-microscopic techniques, and a complex of electric markers was established.

[Ultrastructural morphology of acute alcoholic intoxication].

Histologic and electron-microscopic examination of the liver, heart, kidneys, lungs of 32 individuals who died from acute alcoholic intoxication (alcoholemia from 2,9 to 7,2 0/00) and 16 people who died suddenly from a trauma being in the state of a severe alcoholic intoxication. Material was taken for the examination within 3 hours after death. The ultrastructural alterations detected in the organs reflect a deep metabolic disturbances resulting from an acute or chronic alcoholic intoxication.

[Selective Lugol's solution staining in the diagnosis of carcinomatous and inflammatory lesions of the esophagus].

The selective character of staining the intact mucosa with Lugol's solution is dependent on the glycogen content in the superficial epithelial layer of the oesophagus. The inflammatory or carcinomatous epithelium being not stained is accounted for by changes in the glycogen content in the oesophageal epithelium which makes the staining method useful for diagnozing carcinomatous and inflammatory diseases of the oesophagus.

[Hyperplastic processes in cardiac muscle mitochondria exposed to toxic doses of adrenaline].

Experiments were conducted on albino rats; a study was made of hyperplastic processes in the mitochondria of the myocytes of the heart with the action of toxic adrenaline doses. A solution of adrenaline chloride was injested intramuscularly (3 mg/kg). Three types of mitochondria were revealed in electron microscopic study.