Issn 2181-7200 Ўзбекистон республикаси олий ва ўрта

ENERGETICS, THE ELECTRICAL ENGINEERING, ELECTRONIC DEVICES AND 
INFORMATION TECHNOLOGIES 
Muhammadjonov M.Sh. Analysis of types of power transformers and cooling systems ................. 
95 
Zaynidinov H.N., Azimov B.R., Abduganiev M.M. Use of B-spline method in digital processing 
of biomedical signals ......................................................................................................................... 
100 
Begulov O.U. Numerical implementation and software in the problem of three-phase filtration .. 
104 
Samatova Sh.Y., Temirova L.Z., Ochilov F.G., Khujayorova A.F., Nurmanov O.I. Flue gas 
recirculation for control of the superheating temperature of the intermediate steam of the 
supercritical pressure gas-oil boiler ................................................................................................... 
110 
Uzbekov M.O., Urmonov S.R., Usarov H. The state of use of the hydropower potentials from low-
pressure water sources on a global scale ............................................................................................ 
116 
Sotvodiev Kh.I. Stable algorithms for identifying characteristics of the state of a non-stationary 
dynamic system from observation data ....................................................................................................
120 
Khoshimov F.A., Kadirov K.Sh. Considered the criterion of selection of a resistor, resistive 
grounding of neutral in networks 6-10 kV in open mining .............................................................. 
125 
CHEMICAL TECHNOLOGY AND ECOLOGY 
Ganieva S.Kh., Khamidov B.N., Mirzaeva M.M., Smanov B.A. Study of the adhesion properties 
of modified gear lubricants based on used oils ................................................................................. 
131 

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СОNTENTS 
8 Scientific-technical journal (STJ FerPI, ФарПИ ИТЖ, НТЖ ФерПИ, 2023, T.27, №1) 
Faxrutdinova M.F., Toshboboyeva R.A. Scientific analysis of the biological state of the soils of 
the angren coal mine ......................................................................................................................
 
134 
Pirimov T.J. Obtaining hydroxide and magnesium oxide based on the complex processing of 
local serpentenites .......................................................................................................................... 
139