Transformation of avobenzone in conditions of aquatic chlorination and UV-irradiation.

Emerging contaminants represent a wide group of the most different compounds. They appear in the environment at trace levels due to human activity. Most of these compounds are not yet regulated.

SCT perfusion in the diagnosis of sellar and parasellar tumors.

Unlabelled: The study is devoted to the use of a minimally invasive method of SCT perfusion for the differential diagnosis of sellar and pаrаsellar tumors. Given a wide differential diagnostic range of tumors occurring in this area, the tumor perfusion indicators were used as an auxiliary diagnostic criterion.

Material And Methods: The study analyzed outcomes in 115 patients with various tumors of the sellar area who underwent surgery or biopsy for histological verification of the diagnosis.

[Ambulatory surgery of inguinal hernias].

415 patients with inguinal hernia were operated on in the period of 1996-2005yy. In 87 cases the abdominal wall reconstruction was performed using local tissues, Lichtenstein's method was employed in 139 patients and in 189 cases we performed the modificated combined reconstruction. The latter constitutes of the posterior inguinal wall reconstruction, using local tissues and mesh implantation to the medial part of the inguinal space.

Electrospray ionization tandem mass spectrometry of 3-[4-bis-N,N-(2- chloroethyl)aminophenyl]acetates of estrane series.

Collision-induced fragmentation of the [M + Na]+ and [M + H]+ ions generated from 3-[4-bis-N,N-(2-chloroethyl)aminophenyl]acetates in the estrane series under electrospray/ionization was studied. Some regularities in fragmentation pathways depending on the nature of functional groups were established. Formation of the [(M + Na) NaCl]+ ions along with [(M + Na) HCl]+ ions from the [M + Na]+ ions was explained using quantum chemical calculations for some simplified models.