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коллекция "otherreferats"
Главная Коллекция "Otherreferats" Физика и энергетика
  • 121. Derivation of the Relativistic Doppler Effect from the Lorentz Force

    Calculation and interpretation of the relativistic Doppler effect using only the Lorentz force and relativity theory. The Lorentz transformation and time dilation. Analysis the link between the invariance of the light speed and the Doppler relations.

    статья (228,3 K)
  • 122. Description of Intermittent Plastic Flow

    Deformation of solids. The study of plastic flow. The nanoscale point defects a transition from the solid state of the medium. Synergetic equations describing the self-organization of the particles. Phase diagram of the system and distribution function.

    статья (1,2 M)
  • 123. Description of the proton-triton recharge process with formation of intermediate isobar in diffraction approach

    Using the general formalism of quantum theory of resonance scattering amplitudes for the construction process with the formation of an intermediate resonance in the incident particle and the nucleus. The energy distributions of the emitted nuclei.

    статья (309,5 K)
  • 124. Design and realization of grippers with permanent magnets

    Market research focused on capturing a similar concept and studying the principles and properties of magnets. Application for the drive of the gripping unit of the pneumatic device for manipulation of the portal intended for educational activities.

    статья (4,7 M)
  • 125. Detection of earth faults in electric power cables by analyzing changes in the short-circuit resistance

    Study of effective ground fault detection. Analysis of single phase ground faults in mine cables and ways of their identification. Analysis of method based on measurements of variation of the fault resistance value and associated electromagnetic noise.

    статья (238,8 K)
  • 126. Detection of stresses induced by heat flux in a solid by using a photoelastic microscope

    The advantages of the method of modulation polarimetry applied to the sample in the quartz glass plate to identify its internal thermal stresses caused by the spreading of the thermal wave. The solution to the problem of non-stationary thermoelasticity.

    статья (696,1 K)
  • 127. Determination of electron beam parameters on radiation-technological facility for simulation of radiation processing

    Testing of the computational method PFSEM to restore the characteristics of the electron beam on the basis of two-parametric fitting of semi-empirical model for the depth dependence of the dose. Dose measurement of electrons in the dosimetric wedge.

    статья (226,1 K)
  • 128. Determination of the activation parameters of electrode processes on the basis of temperature dependences in linear voltammetry

    The theoretical analysis of the temperature dependences in linear voltammetry in this communacation for reversible and totally irreversible electrochemical processes. Features of studing means of linear voltammetry technique in sulfare solutions.

    статья (169,0 K)
  • 129. Determination of the sodium, aluminium, potassium, manganese, magnesium, bromine, cadmium and chlorine concentration values in the whole blood samples of human cancer using neutron activation analysis facility of the second egyptian research reactor

    Neutron activation analysis using the Second Egyptian Research Reactor. A sample of normal person to estimate the concentration values of Sodium, Aluminium, Potassium, Manganese, Magnesium, Bromine, Chlorine. The pneumatic irradiation rabbit system.

    статья (309,5 K)
  • 130. Deuterons interaction with nuclei 208pb at sub-barrier energies

    Interaction of weakly bound nuclei. The cluster structure of the neutron rich nuclei. The differential cross sections for elastic scattering of deuterons. The continuous energy distribution of protons and the peak of the structure of their spectra.

    статья (288,9 K)
  • 131. Development of bioenergy in Moldova

    Practices of the Republic of Moldova in the area of bioenergy development and usage of biomass for energy engineering purposes. Information on the developments in the bioenergy area, on organization and results of the development of new technologies.

    статья (31,1 K)
  • 132. Development of Magnetic Field-enhanced Vacuum Arc Deposition in China

    The latest research and development in China for magnetic field-enhanced vacuum arc deposition (MFE-VAD). The interaction between the magnetic field and cathode arc spot (and arc plasma). External magnetic field. The increasing of plasma density.

    статья (733,1 K)
  • 133. Development of the main phenomena of the concept pf an "active" consumer in a smart energy system

    Analysis of the capabilities of an "active" consumer in a household. Analysis of the role of active consumers in modern energy. Importance of the transition to a smart energy system and suggestion of directions for further development of this concept.

    статья (1,1 M)
  • 134. Development of Wide Area Measurement System (WAMS) in the Ural IPS for mode stress estimation. Approaches and decisions

    Directions of formation the main technical solutions to enhance the transmission capability of backbone network in this region through the development and implementation of facilities to determine the current values of stability margin in Russian UPS.

    статья (347,0 K)
  • 135. Diffuse interstellar bands towards o Per and Per

    Analysis of the spectroscopic characteristics of interstellar matter. Relationship with the origin of the diffuse interstellar bands, consideration of the basic features. Meeting with relationships and comparison stars, particularities of the study.

    контрольная работа (225,1 K)
  • 136. Dimensional effects in strain-sensitivity film systems based on Ni and Ag

    A widely usage of multicomponent film systems as a sensitive elements - a characteristic feature of multifunctional sensors. Influence of the phase composition, the structure of components on the mechanical properties of three-layer nickel films.

    статья (581,5 K)
  • 137. Direction of alternative energy

    Differences between alternative energy sources and natural sources, what types they are divided into. Consideration of each type of alternative sources, their device, operating environment, advantages and disadvantages compared to other sources.

    статья (15,0 K)
  • 138. Discrete wavelet transform application to rayleight fading channel estimation in radio communications

    Algorithms for flat fading radio channel estimation was investigated. Namely algorithms based on AR-model with sliding window and without sliding window, algorithm that uses Discrete Wavelet Transform and that uses Discrete Wavelet Packet Transform.

    статья (420,3 K)
  • 139. Dissipative processes in 18-O + 9-Be AND 18-O + 181-Ta reactions at Fermi energies

    A study of peripheral nuclear collisions at Fermi energies with transport models is presented. It is motivated by experiments devoted to studying of isotopic yields in the reactions 18-O on 9-Be and 181-Ta at E/A = 35 MeV measured at forward angles.

    статья (300,2 K)
  • 140. Doppler Effect

    Theoretical information about the history of the discovery of the Doppler effect, the disclosure of its physical nature. Building plot of the Doppler frequency of target velocity at a certain speed range and for given parameters of the wavelength.

    лабораторная работа (124,8 K)
  • 141. Dual inverter-fed drives with the synchronised multilevel voltage waveforms

    Adjustable electric drive system based on an asynchronous motor with open windings, powered by two paired inverters, regulated in accordance with synchronous vector modulation algorithms. Modeling systems with different types of vector modulation.

    статья (420,6 K)
  • 142. Dual three-phase adjustable speed drive with synchronized space-vector modulation

    Split-phase symmetrical motor drive on the base of two voltage source inverters, controlled by algorithms of synchronized pulse width modulation, has been investigated. Simulation results are presented for dual three-phase power conversion systems.

    статья (267,4 K)
  • 143. Dynamic changes in receptive field spatial parameters of visually driven neurons in area 21a at the moving stimulus appliance

    Small stationary receptive fields of visually sensitive neurons which undergo significant expansions by application of moving visual stimuli. Receptive field characteristics investigated in relation to the shapes and sizes of applied visual stimuli.

    статья (882,7 K)
  • 144. E1 radiative strength function for gamma-decay and photoabsorption

    Simple models describing dipole radiative strength functions in medium and heavy nuclei. Basic parameters of the giant dipole resonances and their error. Phenomenological model to describe the kind of asymmetric dipole radiative strength functions.

    статья (225,3 K)
  • 145. Economic failures in heating service: case of Ukraine during the 1991-2015 period

    The application of the structure of socio-technical and multi-level theory of transition. Successful introduction of innovations. Development of scenario heating system for the Ukrainian city of Bila Tserkva. Development of new types of heating systems.

    статья (24,9 K)
  • 146. Effect of composition on structure and mechanical properties of ion-plasma coatings of quasi-binary system TiB2-WB2

    For ion-plasma coatings of quasi-binary system TiB2-WB2 the influence of composition on structure and adhesion strength has been analyzed. Investigation of ion-plasma coatings in order to determine their adhesive and cohesive strength, scratch resistance.

    статья (627,7 K)
  • 147. Effect of doping chromium structural steel at its abrasive wear resistance after heat treatment

    Study the feasibility of rheological kinetic concept abrasive wear resistance for an explanation of this effect. Study of the effect and the influence of alloying chromium in the amount of 1 - 5 % on abrasive wear resistance medium carbon compounds.

    статья (95,5 K)
  • 148. Effect of hall current on generalized magneto-thermoelasticity micropolar solid subjected to ramp-type heating

    The two dimensional magnetic micropolar generalized thermoelastic medium, in the presence of the effect of Hall currents. Laplace and exponential Fourier transform techniques are employed to transform the governing partial differential equations to ODE.

    статья (352,8 K)
  • 149. Effect of High-frequency Laser Radiation on the Graphene Current-voltage Characteristic

    Features of the influence of high-frequency laser radiation on the characteristics of tungsten graphene. An analysis of the causes of the gap in graphene creates a gap in the band of the spectrum in the conditions of a high-frequency electromagnetic wave.

    статья (287,9 K)
  • 150. Effect of Metal on Characteristics of MPc Organic Diodes

    Study of electrical characteristics of organic diodes of metal phthalocyanine. Analysis of the role of the metal Cu, Al, Zn, Mg on electronic parameters. The substantiation of the nonideal behavior of the obtained values of n: 1.85, 2.22 and 4.40.

    статья (397,8 K)

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