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Article
Effect of a Locknut on Load Distribution along the Threads of the Screw of a Tightened Threaded Connection
Assuming that the deformation of the threads of the screw, nut and locknut are caused mainly by the contact flexibility of their working surface, the load distribution along the threads of the screw is studied...
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Article
Electron Transport in a Bipolar Transistor with a Superlattice in the Emitter
A set of transfer and output current–voltage characteristics of a bipolar transistor with a short-period superlattice in the emitter region are calculated. It is shown that the presence of a superlattice in th...
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Article
Electrochemically Induced Phosphorus–Methyl Bond Formation Involving the Complex [Co(Ph2PCH2P(Ph)2PPPPP(Ph)2CH2PPh2)]BF4
The electrochemical properties of [Co(Ph2PCH2P(Ph)2PPPPP(Ph)2CH2PPh2)]BF4 complex have been studied by the method of cyclic voltammetry. The electrochemical methylation of this complex have been cunducted in the ...
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Article
Radiolysis of the Coolant during the Decomposition of a Hydrogen Solution near the Saturation Temperature in VVER Reactors
Radiolysis of the VVER coolant during the transition of hydrogen from the liquid phase into gas-vapor bubbles is calculated. It is found that the decrease in the concentration of hydrogen in the liquid phase o...
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Article
Some Methodological Aspects of Modeling Solid Phase–Supercritical Fluid Equilibria
Thermodynamic modeling of the solubility of pharmaceuticals in supercritical fluids is necessary to optimize processes of extraction, purification, micronization, etc. By the example of the ternary systems CO2–et...
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Article
Rated Life of Roller Bearings under Axial Load
Outside Russia, helical gears mounted on roller bearings are often used in gearboxes. A method is proposed for calculating the rated bearing life, taking account of the axial load. A sample calculation is pres...
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Article
Structural Features of Coatings Produced by Cladding with STIM-2/30 SHS Electrodes and T-590 Commercially Available Electrodes
T-590 commercially available electrodes for wear-resistant claddings and STIM-2/30 electrodes prepared by self-propagating high-temperature synthesis (SHS) extrusion and containing reinforcing titanium carbide...
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Article
BM-U facility for simulating emergency processes involving the propagation and combustion of flammable gases
Accidents involving the release of large amounts of combustible gases, such as hydrogen, methane, carbon monoxide, etc., are possible at nuclear power plants, as well as in chemical production facilities. Curr...
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Article
Axial Loading of Radial Drive Bearings with Short Cylindrical Rollers
Radial bearings with short cylindrical rollers have been developed abroad for gearboxes and railroad axle boxes. These bearings are subject to both radial and axial loads. Russian and non-Russian methods of ta...
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Article
Calculating Current–Voltage Characteristics with Negative Differential Conductivity Sections of Superlattices Based on a GaAs/AlAs Compound with Different Numbers of Periods
An experimental and theoretical study is performed of the change in the slope of current–voltage characteristics in the area of negative differential conductivity. Reasons are considered for the stepwise rise ...
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Article
Structural Features of Complexes [Co(dppaPh)2(CH3CN)2](BF4)2 and [Co(dppaPh)2(η1-P4)]BF4 (dppaPh = N,N-bis(Diphenylphosphino)Aniline)
A new cobalt complex [Co(dppaPh)2(CH3CN)2](BF4)2 (1) (dppaPh = N,N-bis(diphenylphosphino)aniline) is synthesized and structurally characterized. The structural features of this complex are compared with those of ...
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Chapter and Conference Paper
Method for Multiple Analysis of Indicator Mineral Compositions of Kimblites to Estimate the Presence of Type IIa Large Diamonds
In the last decade, researchers are especially interested in giant type IIa diamonds, which differ strongly in composition and physical characteristics from diamonds of “P” and “E” generations. Especially larg...
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Article
Reductive Treatment of δ-MnO2 with Sodium Borohydride: Method for Increasing the Electrode Material Capacitance
The effect of reductive treatment on the phase composition, morphology, and electrochemical parameters of δ-MnO2 produced by the hydrothermal method from KMnO4 at a temperature of 160°C in the presence of HNO3 wa...
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Chapter and Conference Paper
Compositions of Pyroxenes from Kimberlites and Eclogite Xenoliths of the Katoka Pipe (Angola)
Pyroxene is one of the indicator minerals of kimberlites, the compositional features of which are used to study the petrogenetic and mineragenic parameters of deep diamond formation - RT conditions of the diam...
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Article
Local Disturbance of the Water-Chemical Regime as a Cause of Increased Oxidation of Cladding of VVER-1000 Fuel Elements
It is shown that a sharp local decrease in the hydrogen concentration in a coolant and a corresponding increase in the radiolytic oxygen concentration can cause an increase of the oxide layer on the surface of...
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Article
On the Reasons for Reversible Aggregation of Magnetite Ferrofluids during Their Dilution with a Pure Carrier in Zero Magnetic Field
The reason for the reversible aggregation of colloidal particles in magnetite–oleic acid–kerosene magnetic fluids upon their dilution with the pure carrier liquid in zero magnetic field has been studied experi...
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Article
SARS-COV-2 Coronavirus Papain-like Protease PLpro as an Antiviral Target for Inhibitors of Active Site and Protein–Protein Interactions
The papain-like protease PLpro of the SARS-CoV-2 coronavirus is a multifunctional enzyme that catalyzes the proteolytic processing of two viral polyproteins, pp1a and pp1ab. PLpro also cleaves peptide bonds be...
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Article
Determining the Parameters of Wave Spring Washers
Wave spring washers are often used to create preliminary axial tension in roller bearings. A method is proposed for calculating the washer parameters appropriate to a wide range of axial loads.
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Article
Open AccessWays of Estimating the Heat Capacity of Crystalline Phases
A brief review is presented of contemporary ways of estimating heat capacity and determining their main advantages and disadvantages. Incremental schemes that predict the temperature dependences of heat capaci...
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Article
Adrenodoxins and Their Role in the Cytochrome P450 Systems
The role of partner proteins in the formation of functional complexes in cytochrome P450 systems was investigated by means of the optical biosensor technique, used to determine kinetic constants and equilibriu...
