Issn 2181-7200 Ўзбекистон республикаси олий ва ўрта

СОNTENTS 
Scientific-technical journal (STJ FerPI, ФарПИ ИТЖ, НТЖ ФерПИ, 2023, T.27, №1) 7 
FUNDAMENTAL SCIENCES 
Sulaimonov Kh.M., Yuldashev N.Kh. Edge absorption spectra of heavily doped polycrystalline 
PbTe: Pb AND PbTe: Te FILMS ...................................................................................................... 
9 
MECHANICS 
Tojiyev R.J., Akhunbaev A.A., Mirsharipov R.X. Improvement of nozzles of drum devices for 
drying mineral fertilizers ...................................................................................................................
14 
Mardonov B.T., Toirov M.Sh. Evaluation of the influence of defects in welded joints on the 
strength reliability of steel pipe and piping .......................................................................................
20 
Tojiboyev Sh.I., Xametov Z.M. Calculation of the liquid cooling system of agricultural 
machinery ................................................................................................ .....................................
 
25 
Paluanov B.A., Pirmatov A.P., Rakhmatullinov F.F. Study of the properties of yarn produced 
from raw materials with different densities ............................................................... .................... 
31 
Hamzaev I. Kh., Umarov E.S. Determination of temperature stress and deformation in plates by 
the direct method ................................................................................................................................
39 
Sadikov F.S., Ulugmuradov X.Yu. Analysis of changes in the mechanical properties of yarn 
depending on the layer of rebellion ...................................................................................................
49 
Akhunbaev A.A. Distribution of mineral fertilizers in drum dryers ..................................................
56 
Khurmamatov A.M., Ismailov O.Yu., Ismailov M.H., Umarov E.S. Dynamics of the scale layer 
distribution along the length of the heat exchange pipe ................................................................... 
61 
Rosulov R.X., Erdonov A.M. Analysis of the movement of a raw cotton fly on a vibrating mesh 
surface ................................................................................................................................................
65 
BUILDING 
Makhmudova D.E., Rustamova M.M. Analysis and assessment of the problem of providing the 
republic with centralized water supply and the ways of their solution .............................................. 
70 
Tursunov K.K., Khodjaeva R.Yu. Important acpects of the style of minimalism in our national 
homes ................................................................................................................................................. 
75 
Chulponov O.G., Khudaikulov S.I., Sherboev M.R. Simulation of water consumption for 
evaporation from irrigation canals and reservoirs ...... 
79 
Ismoilov F.S., Karimov M.U., Djalilov A.T. Study of the IR spectra of the obtained 
superplasticizer and its effect on the physicochemical and physicomechanical properties of cement 
compositions ...................................................................................................................................... 
85 
Khudaikulov S., Juraev Kh., Abdullayev B.Kh. Modeling of flow aeration in a conduit of closed 
section ............................................................................................................................................... 
90