The preparation and reactivity of metal-containing monomers. 54. Thermolysis of the acrylamide monomer [Co(CH2=CHCONH2)4(H2O)2](NO3)2

The kinetics and pathways of thermolysis of the Co(II) complex with acrylamide, [Co(CH₂=CHCONH₂)₄(H₂O)₂](NO₃)₂ (1) were studied. The rate of gas evolution is satisfactorily approximated by a first-order equation of autocatalysis. The composition of gaseous and solid products of thermolysis of 1 was studied by IR spectroscopy, mass spectrometry, and electronic microscopy. Thermal transformations of acrylamide complex 1 include three macro stages: dehydration, polymerization of the dehydrated monomer, and thermooxidative destruction of the resulting polymer.     

Synthesis of 2-amino-6-(nitroimidazolyl)thiopurines

We have synthesized a series of novel 2-amino-6-(nitroimidazolyl)thiopurines by reaction of thioguanine with 1-alkyl(1,2-dialkyl)-5-chloro-4-nitro-, 2-alkyl(1,2-dialkyl)-5-bromo-4-nitro-, and 1-alkyl(1,2-dialkyl)-4-chloro-5-nitroimidazoles.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 221–224, February, 2000.     

Formation of AgInS2/ZnS Colloidal Nanocrystals and Their Photoluminescence Properties

Physics of the Solid State - Colloidal nanocrystals of AgInS2 were synthesized in aqueous solution using L-glutathione as a ligand. Wider bandgap semiconductor ZnS shell was deposited on the...     

Multilevel System for Protecting the Cryogenic Target during Its Delivery to the Focus of High-Power Laser Facility at High Repetition Rate

An urgent issue in research of inertial confinement fusion (ICF) is the development of the scientific, engineering, and technological base to settle the problem of quality protection of the fuel layer during the high repetition rate delivery of a cryogenic fuel target (CFT) to the focus of a high-power laser facility or ICF reactor. A concept of the multilevel system of CFT protection developed at the Lebedev Physical Institute of the Russian Academy of Sciences is discussed. The concept includes possible ways of integration of the latest developments in the area of formation of the stable ultrafine fuel structure and also the application of external methods of CFT protection such as the (cryogenic and/or metallic) CFT external coatings, the profiling of a target nest inside the sabot (CFT carrier), and the noncontact CFT delivery using a hybrid accelerator based on the effect of quantum levitation of high-temperature superconductors in a magnetic field. The results obtained during the theoretical and experimental simulation made it possible to transfer from the stage of conceptualization to the stage of engineering implementation of the problem.     

Ion Mobility Spectrometry of Imidazole and Possibilities of Its Determination

Journal of Analytical Chemistry - The drift time and ion mobility of imidazole are determined and a procedure for the mathematical processing of spectra is developed. The specific features of...     

Phenylpropanoids of a callus culture of Rhodiola rosea

Using 11 phenylpropanoids isolated from the biomass of a callus culture of roseroot stonecrop, the component compositions in the biomasses of callus and suspension cultures have been studied and their triandrin contents have been determined by the HPLC method.All-Union Scientific-Research Institute of Medicinal Plants, Scientific Production Combine, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 481–490, July–August, 1991.     

Moving inhomogeneity in a magnetohydrodynamic medium

The integral equations of ideal magnetohydrodynamics are derived by the Green’s function method, taking into account the velocity of the medium inside the inhomogeneity before and after its disturbance by the incident field. The extinction principle of of magnetohydrodynamics is demonstrated for a moving half space. A comparative analysis is made with the results of an analogous problem in which only the velocity of the interface between the two media is taken into account. Zh. Tekh. Fiz. 67, 6–11 (May 1997)