Oil Decontamination of Bottom Sediments: Past,Present and Future

Experimental trial and manufacturing application of technologies and devices for purification of water bodies from oil and petroleum products are developed at the premises of Biological Institute of National Research Tomsk State University. More attention is paid to treatment of bottom sediments from oil and petroleum products. As a result of oil contamination, bottom sediments of some water bodies are covered with continuous layer of oil, and water bodies have lost their commercial fishing importance. In 2004-2006 for the first time scientists of National Research Tomsk State University and scientific technical association “Priborservice” conducted experimental trial of treatment bottom sediments technologies from oil on the arctic water bodies of Komi Republic and flood bypass conduits of Yugra (Khanty-Mansi Autonomous Area) to obtain unique results of experimental tests of technologies and equipment.     

Polymer materials of medical purpose and materials for dentistry

A wide range of polymer materials for medical purposes based on polysiloxane developed at the State Research Institute of Building Structures is presented. The properties of compositions cured by both end hydroxyl groups and the reaction of hydroxylation are considered and examples of their applications are presented.     

New method for preparing 5(6)-(1-adamantyl)-benzimidazole

I. Dzhavakhishvili Tbilisi State University, Tbilisi 380028. Georgia State Zootechnical and Veterinary Educational and Research Institute, Tbilisi 38017. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, p. 843, June, 1994. Original article submitted June 7, 1994.     

Analytical chemistry department at Giredmet is 75

The history and current status of analytical service at the Giredmet State Research and Design Institute of Rare-Metal Industry is briefly considered. The main steps in the development of analytical laboratories at the institute are described and the data on the most important works and their authors are presented.     

Performance enhancement of Sn-Ti-C nanofibers anode for lithium-ion batteries via deep cryogenic treatment

Journal of Solid State Electrochemistry - Obtaining a high specific capacity of Sn-Ti composite anode for lithium-ion batteries while maintaining stable cycle is a key issue to be solved. Research...     

Effective charges on atoms of β-diketonates of metals obtained from x-ray electron spectroscopic data

Physicotechnical Research Institute of the Far Eastern State University. Translated from Zhurnal Strukturnoi Khimii, Vol. 30, No. 3, pp. 144–147, May–June, 1989.     

Pheromones of insects and their analogs LIV. Synthesis of dodec-9E-en-1-ol and its acetate —components of the sex pheromone ofSparganothis pilleriana

Using the Claisen rearrangement in the construction of a double bond with the E configuration, we have synthesized dodec-9E-en-l-ol and its acetate, which are components of the sex pheromone ofSparganothis pilleriana.Scientific Research Institute of Fine Organic Synthesis of the Academy of Sciences, Republic of Belarus. Ufa State Petroleum Technical University. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 936–939, November–December, 1996. Original article submitted May 11, 1996.     

Isolation and characterization of a zein polypeptide

Scientific Research Institute of Biology, Dnepropetrovsk State University. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 612–613, July–August, 1988.     

New NiIII/II redox systems with pH controlled potentials based on macrocyclic ligands with azacyclam ligands

Replacement of carbon atoms by non-coordinating nitrogen atoms in 14-membered macrocyclic ligands L increased the redox potentials of Ni_III/IIL couples. Compounds of this type are new systems whose redox potentials can be varied by changing the pH of the medium.Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 31, No. 6, pp. 375–378, November–December, 1995.This study was supported by the State Fund for Fundamental Research, Ukraine State Committee on Science and Technology (project 33/52) and in part by the International Science Fund (grant UBG 000).     

Crystal structure of ZnCl2·H2O·18-crown-6

State Scientific Research Institute for the Chemistry and Technology of Heteroorganic Compounds. Translated from Zhurnal Strukturnoi Khimii, Vol. 30, No. 4, pp. 188–189, July–August, 1989.     

Single-component silicon sealing materials

Single-component silicon adhesive sealant of cold vulcanization based on liquid polyorganosiloxane resins with terminal hydroxyl groups designed at the State Research Institute of Chemistry and Technology of Organoelement Compounds are presented. It was demonstrated that due to their high performance characteristics, in particular the wide range of working temperatures (from −90 to +300°C), these materials draw interest from both civilian and special fields of industry. Methods of producing single-component silicon adhesive sealants were considered.     

Experimental study on scale inhibition performance of a green scale inhibitor polyaspartic acid

Static and dynamic experiments were carried out to validate scale inhibition performance of a green scale inhibitor-polyaspartic acid (PASP). From the static experiment, it was shown that below 60℃, polyaspartic acid is very effective in scale inhibition, with the scale inhibition ratio exceeding 90% with only 3 mg/L PASP for the 600 mg/L hardness solution. For a higher hardness solution of 800 mg/L, the scale inhibition ratio can also reach 90% with 6 and 12 mg/L PASP at 30 and 60℃respectively. The SEM photographs of CaCO3 crystals indicate that the crystal structure transforms from a compact stick-shape to a loose shape so that the scale can be washed away easily instead of being deposited on the heat transfer surface. The dynamic experimental results show that almost no scales formed on the heat trans- fer surface and the fouling thermal resistance decreases extraordinarily if PASP is added in the solution.     

Special features of the solid-state dehydration/ hydration processes of a binuclear nickel(II) complex with an amide-containing polychelate ligand

It was found that a binuclear complex of nickel(II), unlike its mononuclear analog, undergoes reversible dehydration/hydration in the solid state accompanied by a change in color. The probable cause of this is breaking/formation of a specific network of hydrogen bonds in the crystal lattice of the binuclear compound.Translated from Teoreticheskaya i éksperimental'naya Khimiya, Vol. 31, No. 2, pp. 110–113, March–April, 1995.The authors are grateful to N. I. Yashin for carrying out the thermoanalytical measurements.This work is part of the program of the International Science Fund (Grant UBG 000) and was also financially supported by the State Fund for Fundamental Research of the Ukrainian State Committee on Science and Technology (Project 3.3/52).     

Investigation of the mechanism of the heterocyclization of 1-heterobutadienylketenes using the MINDO/3, MPDP, and AM1 methods

The semiempirical MINDO-3, MPDP, and AM-1 methods are shown to be applicable to the calculation of the cyclization of 1-oxa-and 1-azabutadienylketenes. The mechanisms of the heterocyclizations have been studied. Formation of the new -bond results from interaction of the unshared electron pair of the heteroatom with the _x ^* of the ketene C=O bond.Ural State Technical University, Ekaterinsburg 620002. Physical and Organic Chemistry Research Institute, Rostov State University, Rostov-on-Don 344711. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 113–120, January, 1997.     

Sodium derivatives of 1-methyl-2-alkylimidazoles

Physical and Organic Chemistry Research Institute, Rostov State University, Rostov-on-Don 344104. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 847–848, June, 1994. Original article submitted May 25, 1994.     

Crystal and molecular structure of dihydroxynaphthalene isomers. Effect of structure on ice-forming properties

Kiev State University and L. Ya. Karpov Physical Chemistry Research Institute. Translated from Zhurnal Strukturnoi Khimii, Vol. 31, No. 5, pp. 116–121, September–October, 1990.     

Neutron Activation Procedures Used for the Calibration of a Nitrogen-16 Reactor Power Monitor

Personnel from the Pennsylvania State University's Breazeale Nuclear Reactor assisted NRC (Nuclear Research Corporation) personnel in calibrating a new MSL/¹⁶N Nitrogen-16 Monitor. This paper describes the neutron flux calibration procedures utilized and the results obtained for the production of a nitrogen-16 source of known activity for a BGO detector calibration.     

Semiconductor heterojunctions and composites based on cadmium and bismuth sulfides as new redox catalysts

Heterojunctions and composites made of the semiconductors cadmium and bismuth sulfides have been examined as photocatalysts for producing molecular hydrogen from aqueous alcoholic solutions. Kinetic laws are derived together with the quantum yields of the reaction under various conditions and spectral characteristics of the photocatalysts.Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 30, No. 4, pp. 197–201, July–August, 1994.We are indebted to the Fundamental Research Fund of the State Committee of the Ukraine for Science and Technology for support in this research.     

Synthesis of n2-guanylcarboxylic acids

A novel method has been developed for synthesizing N²-guanylcarboxylic acids by reaction of 2-chloro-7-benzyl-hypoxanthine with amino acids and debenzylation of the 7-benzyl-N²-guanylcarboxylic add products by means of palladium catalyzed hydrogenation.Center for the Chemistry of Medicinal Compounds. All-Russian Chemico-Pharmaceutical Science Research Institute, Moscow 119815. State Institute for Blood Substitutes and Medicinal Preparations, Moscow 109044. Zaporozh'e State Medicinal Institute, Zaporozh'e 330074. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 395–398, March, 1996. Original article submitted January 17, 1996.     

Synthesis of n2-alkyl(aryl,dialkyl, cycloalkyl)guanines

Novel N²-alkyl(aryl, dialkyl, cycloalkyl)guanines have been synthesized by treating 2-chloro-7-benzylhypozanthine with amines and debenzylation of the N²-substituted 7-benzylguanine products by means of palladium catalyzed hydrogenation.DeceasedCenter for the Chemistry of Medicinal Compounds. All Russian Chemico-Pharmaceutical Science Research Institute, Moscow, 119815. State Institute for Blood Substitutes and Medicinal Preparations, Moscow, 109044. Zaporozh'e State Medicinal Institute, Zaporozhe'e, 330074. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 391–394, March, 1996. Original article submitted January 6, 1996.