This article concerns the null controllability of a nonlinear control system governed by coupled degenerate parabolic equations.We first establish the Carleman estimate and the observability inequality First Aid Supplies for solutions to the conjugate problem.Then we can prove the observability inequality and the null controllability of the linear
Wastewater contains a large range of biological and chemical markers of human activity and exposures.Through systematic collection and analysis of these markers within wastewater samples it is possible to measure the public health of whole populations.The analysis of effluent and biosolids can also be used to understand the release of chemicals fro
Mastering crop evapotranspiration (ET) and improving the accuracy of ET simulation is critical for optimizing the irrigation schedule and saving water resources, particularly for crops cultivated in a greenhouse.Taking greenhouse-grown tomato under drip irrigation as an example, two weighing lysimeters were used to monitor ET at two seasons (2019 a
There are many types of investments that can be used to generate income, such as in the form of land, houses, gold, precious metals etc., there are also in the form of financial assets such as stocks, mutual funds, bonds and money markets or capital markets.One of the investments that attract enough attention today is the capital market investment.
The purpose of the paper is to study the problems of functioning and improvement of the organizational and legal mechanism of public administration in the field of land use and protection in Ukraine in their correlation with the issues of formation and implementation of the land policy of the state.Methodology.The essence of the problem under inves