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сколько стоит заказать работу? коллекция "otherreferats"
Главная Коллекция "Otherreferats" Физика и энергетика
  • 121. Cорбция-десорбция 137Сs и 90Sr в процессах миграции и дезактивации

    Процессы сорбции-десорбции в системах "радионуклид-природные глинистые минералы" и "радионуклид-модифицированные формы природных глинистых минералов с осажденными гумусовыми кислотами и гидроксидами железа". Использование аммонийных солей как реагентов.

    статья (326,9 K)
  • 122. Cтатистична теорія фрагментації твердотільних середовищ при самоподібному законі подрібнення

    Побудування статистичної теорії фрагментації твердотільних середовищ на основі однопараметричного опису динамічних станів фрагментів з урахуванням законів збереження речовини і балансу енергії. Огляд умов самоподібного закону подрібнення фрагментів.

    автореферат (58,4 K)
  • 123. Cуперсиметрія та точно розв'язувані задачі у квантовій механіці

    Дослідження суперсиметрії електронної в стаціонарних тривимірних магнітних полях у двовимірному випадку та частинки зі спіном. Аналіз розв’язків для енергетичних рівнів та хвильових функцій гармонічного осцилятора та релятивіського осцилятора Дірака.

    автореферат (93,8 K)
  • 124. Dangers of Electricity

    Electric current and its effect on the body. The types of effects that current levels can have on the body. The effect of current on the electric shock. An explanation of some of the most common effects of an electric shock. Consequences of shock.

    статья (12,7 K)
  • 125. Dead rooms and live wires: Harvard, Hollywood and the deconstruction of architectural acoustics, 1900-1930

    Mathematical formula of W. Sabine for calculating the reverberation time in a room, a measure of how quickly or slowly sound energy dies away in an enclosed space. Studying the behavior of sound in rooms and absorption of sound energy by the materials.

    статья (8,4 M)
  • 126. Debt crisis in the electricity market: causes and threats to the economic security of electricity companies

    Study the causes of the debt crisis in the Ukrainian energy market, searching for ways to overcome them. Attracting loans from state and international banks to compensate for consumer debt. Increasing the volume of "clean" electricity exports in Ukraine.

    статья (467,9 K)
  • 127. Decay acceleration of isomers by X-ray laser

    The possibility of the two-step triggering of nuclear isomers by short X-ray laser pulses via an excited intermediate level. The estimations of the decay acceleration are performed for the isomer of 84-Rb in the field of future European X-ray laser.

    статья (229,2 K)
  • 128. Delayed neutron yield measurement on thermal neutron induced fission of 237Np using cross-correlation technique

    A technique of measuring the output of delayed neutrons of fission in the process of learning cores, with the help of a mechanical chopper. The use of neutron flux applied for demodulation, correlated with the modulation of the thermal neutron flux.

    статья (268,3 K)
  • 129. Demonstration of chromatic dispersion compensation fibre using circular hole PCF with different pitch and diameters

    Approach for dispersion compensation. Introduction different air hole diameter and pitches to maintain the flat and zero dispersion in photonic crystal fiber. A new geometry of PCFs which uses ‘Circular’ holes instead of square or elliptical holes.

    автореферат (397,7 K)
  • 130. Demonstration of chromatic dispersion compensation fibre using square hole PCF

    Approach for dispersion compensation. Introduced different air hole diameter and different pitches to maintain the flat and zero dispersion in photonic crystal fiber. Proposed a new geometry of PCFs which uses "square" holes instead of circular holes.

    автореферат (384,3 K)
  • 131. Deposition of Uniform Vacuum Arc Coatings by Use of Magnetic Traps for Plasma Electrons

    Studding of Deposition of uniform coatings in the vacuum arc deposition setup. A control unit consisted of two electromagnetic coils installed under substrate of 400 mm dia. exposed to the plasma flux at a distance of 325 mm from the plasma duct exit.

    статья (616,9 K)
  • 132. Derivation of the lorentz force law and the magnetic field concept using an invariant formulation of the lorentz transformation

    Invariant formulation of the Lorentz transformation. Derivation of the Lorentz force law and the magnetic field. The time component of the relativistic generalisation of the Lorentz force law. The time component of newton’s second law in electrodynamics.

    статья (110,1 K)
  • 133. 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)
  • 134. 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)
  • 135. 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)
  • 136. 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)
  • 137. 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)
  • 138. 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)
  • 139. 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)
  • 140. 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)
  • 141. Determination of the factors affecting the forecasting of electricity consumption of machine-building enterprises

    Analysis of the factors influencing the forecasting of electricity consumption by a machine-building enterprise. Evaluation of factors affecting electricity, based on the method of expert assessment. Determining them by constructing a correlation matrix.

    статья (155,7 K)
  • 142. 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)
  • 143. 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)
  • 144. 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)
  • 145. 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)
  • 146. 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)
  • 147. 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)
  • 148. 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)
  • 149. 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)
  • 150. 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)

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