Materials Literature
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The statistical analysis of the deviations of the outer and inner bearing race profiles of the cylinder grinding machines is resulted. The patterns of forming vibration spectra of the bearings of the same series and standard size, which designate the option of the practical recommendations on reducing noise levels of…
Some problems on disassembling fixed demountable joints by oscillations forced by the waveguide are considered. The obtained results of the study characterizing the relationship between the used scheme of the vibro-loading, the target exposure period, and the disassembly efficiency are shown.
A novel evaluation method was developed for Raman microscopic quantitative characterization of polymer waste. Car shredder polymer waste was divided into different density fractions by magnetic density separation (MDS) technique, and each fraction was investigated by Raman mapping, which is capable of detecting the co…
To settle upon the appropriate description of such processes as fuel injection, dispersion and vaporation in the diesel engines, a hierarchy of the corresponding models is offered. The application domain of the detailed model based on the evolutionary equations with partial derivatives, as well as the averaged version…
The statement that transductors with magnetodielectric carbonyl iron dust-based magnetic circuits have the linear gain characteristic on the peak values throughout the full range of the real current value shift is proved in theory and by experiment. Functional scheme features of the linear periodic component short-cir…
The mathematical and simulation models of the circadian rhythm of the systolic blood pressure, as well as stochastic and simulation models of the systolic blood pressure control in the stress situations are developed.
The application of the quaternion kinematics for building a mathematical model of the rotor system engaged in three-dimensional motion is considered.
The direct and inverse problems for the bound spatial dimension chain ‘gearbox — motor’ formed through assembling the helicopter power-plant are solved. The compensating units and stray fields of the rate accuracy indices are calculated.
The most important financial economic models of governing and funding the university educational processes are considered. The approaches based on three models – when funding is provided either by the state, or by private investors, or on the mixed principle – are described. The Western experience based on the Anglo-S…
The fracture conditions for the particles of ferromagnetic materials in the magnetic field in the process of their collision are considered. The field parameters of the destruction are analyzed.
An effective part cutting technique with the ultrasonic generators is offered. The pilot designs of the working chambers are developed. The tests are run, the results are analyzed.
The definition of controlling is given. The factors influencing the controlling system at the enterprise are considered. The comparative analysis of American and German models is made. The conclusion on their availability at the Russian enterprises is drawn.
Some questions on the assessment and development of the products design fabricability in the integrated CAD/CAM system are studied. The analysis procedure of the design assembly manufacturability by means of DFMA technique is closely considered. The assembly manufacturability simulation and assessment of some products…
The theoretical basics of the pollution damage reduction are considered. Some estimation methods of the emissions damage are analyzed. The approach to the emissions damage evaluation based on the assessment of costs for forming the ecosystem elements, which have a population carrying capacity sufficient for preventing…
The solution to the problem connected with increasing the service reliability of the combine harvesters at the expense of cutting time on the delivery of spare parts to the field is offered.
The initial-boundary value problem of the system research on the concentration and electrical fields in the double-electrode electrochemical device is suggested and solved. The problems on the conjugation of fields are considered. The electric equivalent circuit of the electrochemical device as an object with distribu…
Abstract We present calculations of frequency‐dependent complex dielectric function of dense aluminum plasma by quantum molecular dynamics method for temperatures up to 20 kK. Analysis shows that the dependencies for real and imaginary parts can be interpolated by the Drude formula with two effective parameters: the m…
A quantum Monte Carlo study of the atomization energies for the G2 set of molecules is presented. Basis size dependence of diffusion Monte Carlo atomization energies is studied with a single determinant Slater-Jastrow trial wavefunction formed from Hartree-Fock orbitals. With the largest basis set, the mean absolute d…
We present a systematic study of the performance of numerical pseudo-atomic orbital basis sets in the calculation of dielectric matrices of extended systems using the self-consistent Sternheimer approach of [F. Giustino et al., Phys. Rev. B 81 (11), 115105 (2010)]. In order to cover a range of systems, from more insul…
Using a linear array of voltage electrodes with a separation of several micrometers on a 20 nm thick and 30 μm long multigraphene sample, we show that the measured resistance does not follow the usual length dependence according to Ohm’s law. The deviations can be quantitatively explained taking into account Sharvin-K…