A note on the positive solutions of second order differential equations

We obtain an existence theorem for monotone positive solutions of nonlinear second-order nonlinear differential equations via principal and nonprincipal solutions of the corresponding homogeneous equation.     

Improved method for the preparation of a ruthenium carbonylcarbide cluster,Ru6C(CO)17

An improved method has been developed for the synthesis of the ruthenium carbonylcarbide cluster Ru₆C(CO)₁₇ by heating Ru₃(CO)₁₂ in octane at reflux.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1893–1894, August, 1990.     

Chromium-tricarbonyl complexes of phenyl-containing cyclosiloxane

Conclusions The reaction of different cyclosiloxanes with chromium-carbonyls was studied. Mono- and binuclear chromium-tricarbonyl complexes of phenyl-containing cyclosiloxanes were obtained for the first time.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2060–2063, September, 1987.     

The nature of the globulin of the algaPhyllophora nervosa

Conclusions The globulin of the algaPhyllophora is heterogeneous and consists of a number of fractions, some of which we assign to the glycoproteins. These fractions differ in their molecular weights, N-terminal amino acids, and the amount and composition of the amino acids and carbohydrates.The main difference between the fractions ofPhyllophora globulin is the nature of the carbohydrate bond with the true protein part of the molecule.Khimiya Prirodnykh Soedinenii, Vol. 6, No. 3, pp. 351–355, 1970     

Binuclear complexes from ω-cyanoalkyl derivatives of cyclopentadienylmanganese tricarbonyl and benzenechromium tricarbonyl

Conclusions The reaction of the-cyanoalkyl derivatives of cyclopentadienylmanganese tricarbonyl and benzenechromium tricarbonyl with chromium and tungsten carbonyls gave binuclear complexes with the same, as well as with different metals in the molecule.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 722–725, March, 1978.     

Preparation of unsymmetrical ruthenium bisarene cations

Conclusions A method was developed for the synthesis of ruthenium bisarene cations with various arenes [C₆H₆RuArene]²⁺ by heating [C₆H₆RuCl₂]₂ with the corresponding arene in heptane in the presence of AlCl₃.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1423–1425, June, 1985.