A gas chromatography flame ionization detector (GC-FID) method based on the use of ethanol as an internal standard was developed and compared with the official Chinese method for the determination of methanol in various alcoholic beverages. Both official and developed methods were approbated for the analysis of wide range of alcoholic beverage samples with ethanol concentrations ...

In this paper, the temperature measuring methods is considered. The mechanical energy used in the grinding process is almost completely converted into thermal energy. This amount of heat can cause geometric deflections on the workpiece, change its surface area, and accelerate tool wear. Thus, the contact area temperature is an important process variable. However, it is difficult ...

The paper shows the relationship “microbiota-gut-brain” and the importance of studying the prognostic significance of the nature of the metabolic profile of the intestinal microflora against the background of stress from circadian rhythm disorders. It is recommended to include upto- date data on the biochemical and physiological features of the intestinal microbiota and its effect ...

BIM in the construction phase of the project information can be parameterized to ensure that the construction of the project data and information to achieve automated statistical analysis, BIM application in the construction phase, including technical disclosure, site layout, engineering calculation and so on to improve the construction project management quality and efficiency ...

There will be a large amount of ash accumulation in the mineral heating furnace when preparing products, but due to the harsh internal environment of the mineral heating furnace [1], it is difficult to directly observe the situation in the furnace. This project uses the inner cavity imaging system to reconstruct the situation in the furnace through computer three-dimensional, so ...

Clustering analysis is fundamental for determining dominant discontinuity properties in rock engineering. This study proposes an improved netting algorithm for identifying discontinuity sets based on multiple discontinuity properties. The new method is believed to be a potentially useful tool for rapidly obtaining dominant discontinuity sets in rock engineering.

The present condition of the machine tool industry in the Republic of Belarus and Russian Federation and measures to address the problems were considered.

The disadvantages of traditional methods of microarc oxidation are the long processing time (up to 120 min) for the formation of oxide layers of the required thickness with the required properties and, accordingly, high energy costs. Such a long duration of the traditional MAO process is due to the fact that the thickness of the formed oxide layer is determined by the number of ...

This article discusses various types of hydraulic chucks, the features of their use in modern metal-cutting machines, their design features.

The operating conditions of an armored face conveyor as part of a cleaning complex with two single-screw combined machines are considered. The technique for determining the power to drive the conveyor is given.