Estimation of the capacity for self-purification of transformed rivers of Khanty-Mansi Autonomous Okrug-Yugra (Russia).

This article presents an estimation of the self-purification capacity of rivers flowing through an area of the Ob River basin at Khanty-Mansi Autonomous Okrug-Yugra, which has been significantly transformed by the oil and gas industry. The research was done on the rivers of the Ob River basin in oil fields in 2003-2006 and 2018-2019. The coefficient of mineralization of organic matter has been used as a criterion of the rivers' water self-purification levels.

[Echography in congenital intestinal obstruction in newborn infants].

The authors used echography in order to reveal typical echographic signs of high and low bowel obstruction in 51 newborns. Although the use of echography often fails to establish the real cause of the bowel obstruction, it allows the determination of its level and in general promotes making the proper diagnosis.