TY - JOUR AU - Лошицкий , П. П. AU - Устенко, К. С. AU - Ткачук , И. В. PY - 2021/06/30 Y2 - 2024/03/29 TI - Radiotechnical Remote Identification of Liquids in Closed Dielectric Containers JF - Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia JA - RADAP VL - IS - 85 SE - DO - 10.20535/RADAP.2021.85.14-20 UR - https://radap.kpi.ua/radiotechnique/article/view/1712 SP - 14-20 AB - <p>Remote study of liquid systems is associated with significant difficulties associated with experimental studies and mathematical modeling based on these studies. Standard methods for investigating liquids are mainly spectroscopic methods in various frequency ranges from neutron diffractometry to acoustic spectroscopy, which are very difficult or even impossible to apply for remote sensing. Interpretation of experimental results and attempts to construct physical models based on them is possible only in the simplest cases. Suffice it to recall that the simplest and most widespread solvent, water, is still poorly studied and does not have a generally accepted single model.<br /><br />In this paper, we consider a technique and a measuring complex for remote investigation of liquid electrolytes and non-electrolytes by measuring and analyzing fluctuations in the differential temperature of an intermediate liquid medium (distilled water), in which a container (container) with a test liquid is placed. The proposed technique is based on the fact that the object under study, although it has electroneutrality, that is, equality to zero on average of the fluctuation local charge density and the average fluctuation current density, which means the equality of the average value of the electromagnetic field to zero, but other averaged characteristics, for example, quadratic in the field, may differ from zero. The quadratic characteristics of a thermal electromagnetic field determine its energy, which has a nonzero finite value, which can be measured by an appropriate sensor and characterize the source of the field - a macroscopic body - heated to a certain temperature. The results of studies of mixtures of electrolytes and non-electrolytes of various concentrations, as well as their mixtures are presented. It is shown that it is possible to distinguish between the studied liquids, and how to combine the components of solutions of given concentrations to obtain the specified properties of the entire solution.</p> ER -