Sample preparation method for IR analysis of petroleum-contaminated soil: An innovative technology for ecological remediation using .

phytoremediation of soil contaminated with petroleum was assessed in this study. A method of soil sample preparation for determining the total content of petroleum products by infrared spectrophotometry has been developed. It is a one-stage extraction method with minimal use of carbon tetrachloride as an extractant.

The Spectrophotometric Characteristic of Immunoglobulin Conjugates for Diagnostics of Causative Agents of Especially Dangerous Infections.

The possibility of characterizing fluorescent immunoglobulins using spectrophotometric analysis as a testing method is considered. The comparative analysis of optical properties of fluorescent immunoglobulin preparations and their components-immunoglobulins and fluorochrome-is carried out. The obtained results testify that the proposed methodological approach of optical detection of labeled immunoglobulin molecules can be promising for tests on obtaining conjugates used in immunological tests on revealing specific antigens of causative agents of especially dangerous infections.

Regio- and stereoselective synthesis of new diaminocyclopentanols.

The optimal conditions for regio- and stereoselective epoxide ring opening of N,N-disubstituted 1,2-epoxy-3-aminocyclopentanes by different nucleophilic reagents have been developed. The substituents on the nitrogen atom in the epoxide precursor and the orientation of the oxirane ring are crucial for the reaction outcome. Thus, treatment of (1RS,2SR,3SR)-1,2-epoxy-3-(N,N-dibenzylamino)cyclopentane (3b) with amines gave a mixture of C1 and C2 regioadducts, while the use of (1RS,2SR,3SR)-1,2-epoxy-3-(N-benzyl-N-methylamino)cyclopentane (3a) led ultimately to C1 adducts.

[Intra-operative histochemical detection of vitalized muscular tissue during lower limb amputation for chronic critical ischemia].

Direct results of 747 lower limb amputations for chronic critical lower limb ischemia were analyzed. Early postoperative complications were observed in 45,1% of cases. Among them 45,4% were caused by tissue ischemia.

[Diagnosis and surgical treatment of pathological kinking of internal carotid arteries].

Analysed herein are the outcomes of a comprehensive (clinical, ultrasonographic and magnetic-resonance) examination of 322 patients with symptomatology of ischemic disorders of cerebral circulation, undergoing treatment at a neurological hospital. Of these, a total of 194 (60 %) patients were found to have various types of pathology of the internal carotid arteries (ICA). Pathological kinking of the internal carotid arteries was revealed in 56 (17.