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Article
Open AccessPhase Equilibriums of Ammonium Chloride Systems as Model Hydrogenolysis Products of Organochlorine Compounds under Naphtha Hydrotreating Conditions
The study focuses on corrosion challenges for naphtha hydrotreating equipment (installed upstream of a reforming unit) caused by ammonium chloride deposits and on the development of adequate chemical engineeri...
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Article
Opportunities and Challenges to Deploy Industry 4.0 Technologies in the Russian Oil Refining and Petrochemical Industries
The paper analyzes the prospects for the introduction of Industry 4.0 elements in the construction of new installations and the modernization of existing ones at oil refineries and petrochemical plants of the ...
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Article
Petrochemical Industry in Russia: State of the Art and Prospects for Development
The state of the art of the petrochemical industry in Russia was analyzed. The data obtained from Russian companies revealed extremely strong dependence of this branch of industry on imported technologies and ...
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Article
Key Technology Development Priorities for the Oil Refinery Sector in Russia
More than 50 installations for secondary oil refining of the total cost of more than 1.5 trillion rubles (about $20 bln) are planned to be put into operation in Russia by the year 2035. Construction of these i...
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Article
A Search for Asymmetric Barrier Layers for 1550 nm Al-Free Diode Lasers
A search for materials suitable for implementation of 1.55 µm Al-free diode lasers based on InP with asymmetric barrier (AB) layers is conducted. It is shown that a very high (over 106) suppression ratio of the p...
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Article
Spatial hole burning and spectral stability of a quantum-dot laser
The inhomogeneous intensity distribution of the optical model along the axis of a semiconductor quantum-dot laser results in spatial hole burning. The influence of this phenomenon on the stability of the multi...
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Article
Effect of carrier dynamics and temperature on two-state lasing in semiconductor quantum dot lasers
It is analytically shown that the both the charge carrier dynamics in quantum dots and their capture into the quantum dots from the matrix material have a significant effect on two-state lasing phenomenon in q...
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Article
Optimization of the design and mode of operation of a QD laser for reducing the heat-to-bitrate ratio
Heat dissipation under the high-speed modulation of quantum dot edge-emitting lasers is considered. It is shown that, for a given laser diode, there is a bias current at which the heat-to-bitrate ratio is mini...
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Article
Effect of active-region modulation do** on simultaneous ground-state and excited-state lasing in quantum-dot lasers
The lasing spectra and light-power characteristics of lasers based on InAs/InGaAs quantum dots with p-type modulation do** are studied over a broad range of pump currents. It is shown that p-type do** leads t...
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Article
Influence of inhomogeneous broadening and deliberately introduced disorder on the width of the lasing spectrum of a quantum dot laser
Analytical expressions for the shape and width of the lasing spectra of a quantum-dot (QD) laser in the case of a small (in comparison with the spectrum width) homogeneous broadening of the QD energy levels ha...