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61.
A. Yu. Tolbin V. E. Pushkarev L. G. Tomilova N. S. Zefirov 《Russian Chemical Bulletin》2006,55(7):1155-1158
New planar binuclear phthalocyanines sharing the benzene ring were synthesized and their spectral properties were studied.
Intense absorption in the near-IR region (∼850 nm) was observed for the first time.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1112–1115, July, 2006. 相似文献
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63.
I. I. Baskin M. I. Stankevich R. O. Devdariani N. S. Zefirov 《Journal of Structural Chemistry》1989,30(6):995-997
Moscow State University. Translated from Zhurnal Strukturnoi Khimii, Vol. 30, No. 6, pp. 145–147, November–December, 1989. 相似文献
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V.G. Bazhenov S.V. Zefirov L.N. Kramarev Ye.V. Pavlenkova 《Journal of Applied Mathematics and Mechanics》2008,72(2):226-232
Generalized two-dimensional problems of the torsion of elastoplastic solids of revolution of arbitrary shape for large deformations under non-uniform stress-strain conditions are formulated and a method for their numerical solution is proposed. The use of this method to construct strain diagrams of materials based on experiments on the torsion of axisysmmetric samples of variable thickness until fracture occurs is described. Experimental and numerical investigations of processes of elastoplastic deformation, loss of stability and supercritical behaviour of solid cylindrical steel samples of variable thickness under conditions of monotonic kinematic loading with a torque, a tension and a combined load are presented. The mutual influence of torsion and tension on the deformation process and the limit states is estimated, and the universality (the independence of the form of the stress-strain state) of the “stress intensity – Odqvist parameter” diagram for steel for large deformations is proved. 相似文献
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V. G. Bazhenov S. V. Zefirov V. L. Kotov 《Journal of Applied Mechanics and Technical Physics》2004,45(5):732-740
This paper considers an experimental–theoretical technique for determining pressure–strain curves and curves of yield strength versus pressure for soils based on disagreement between data of physical and numerical modeling of wave processes in a system of split Hopkinson bars with a soil sample in a holder. A convergent iterative procedure was developed to refine the equation-of-state parameters of soils obtained by the Kolsky method. The error of the technique is analyzed, the role of friction and the coefficient of sliding friction between the soil and the deformed holder. 相似文献
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