Investigation of electrical resistivity and average magnetic moment per atom of Ni3(Fe,Ti) and Ni3(Mn,Ti) alloys

The electrical resistivity and average magnetic moment per atom of Ni₃(Fe, Ti) and Ni₃(Mn, Ti) alloys were measured. X-ray structural analysis revealed the presence of the Ni₃Ti phase in Ni₃(Fe+7% Ti) and Ni₃(Fe + 10.3% Ti), and strong interaction of Ni and Ti is deduced. The introduction of Ti into Ni₃Mn reduces the antiferromagnetic Mn-Mn interaction and thus leads to greater ordering.Deceased.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 5, pp. 9–12, May, 1981.     

A new method for reconstructing medium inhomogeneities using Rayleigh waves: Case studies

The problem of reconstructing local low-contrast inhomogeneities in the Earth’s surface layers by means of coherent Rayleigh surface waves is considered. It is shown that analysis of the frequency characteristics of shear projections in this wave on the surface allows construction of the function of inhomogeneity distribution in a specified depth range. The results from seismoacoustic reconstruction of inhomogeneities correlate with data obtained using standard geophysical methods and are confirmed by direct observations.     

Qualitative analysis of a three-dimensional population evolution model with possible nonequilibrium size preservation

A three-dimensional mathematical model of nonhomogeneous population dynamics with selection and birth-and-death processes is considered. Bifurcations of operating modes are determined and conditions for extinction, degeneration, and stabilization are established. Translated from Nelineinaya Dinamika i Upravlenie, pp. 71–89, 1999.     

Studying the Parameters of Aluminum Flyer with a Linear Current Density of 4.5 MA cm<Superscript>−1</Superscript> on the Angara 5-1 Installation

Preliminary results are presented for the parameters of flyer used in experimental studies of material properties in the shock-wave compression of a sample by a magnetic field.     

Electrochemical behavior and structure evolution of polyaniline/carbon composites in ionic liquid electrolyte

Journal of Solid State Electrochemistry - Polyaniline/carbon (Pani/C) composites were synthesized by oxidative polymerization of aniline in the presence of carbon material at different pH values....     

Using the coordinates of the mass centers of atomic groups in analyzing vibrations of large molecules

We show that in describing the vibrations of molecules it is worthwhile to use coordinates that include the mass centers of atomic groups. We note special features of the program implementation of the approach in application to the earlier devised set of “Spectrum-structure” and LEV programs. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 67, No. 1, pp. 42–47, January–February, 2000.     

非有机溶剂液-固萃取体系提取血红蛋白研究

用聚乙二醇(PEG8000)修饰物混合吐温80-磷酸钾盐液-固萃取体系从血液中直接提取血红蛋白,考察了PEG8000修饰物、磷酸钾盐和吐温80的浓度及酸度和温度等因素对血红蛋白分离纯化的影响.结果表明,采用该体系的一次固相萃取率大于99%,一次反萃取率达到75%.所得到的血红蛋白干粉的纯度为99%.该方法不使用有机溶剂,无毒性,对蛋白质具有稳定和保护作用,易于放大规模使用.     

Hamiltonian for rovibrational spectra of “hot” molecules

A variational method based on the determination of rotation as a state with a constant angular momentum has been proposed for calculating rovibrational energy levels of a polyatomic molecule. By using this method, energy level values can be determined for any vibrational state with arbitrary values of vibrational quantum numbers. This makes it possible to calculate the rovibrational energy levels of the “hot” molecules.     

Method of calculation of electron states in large molecules using one-center functions of fragments

A method of calculation of electron states in large molecules is proposed on the basis of the linear combinations of one-center functions of fragments with their interactions subsequently taken into account. It is shown that the computing procedure can be implemented similarly to the conventional one using LCAO.