No abstract

No abstract

No abstract

The article is devoted to the task of planning an experiment in chemistry and chemical technology. The problem statement of finding the optimal ratio of the initial substances of reaction is defined. A genetic algorithm for solving this problem is proposed. The algorithm is tested on the example of the reaction of aminomethylation of thiols using tetramethylmethanediamine. The optimal initial concentrations of reagents are calculated to obtain the maximum yield of the target reaction product.

The reconstruction of public buildings is one of the most important fields of construction engineering. Reconstruction works allow not only increasing the service life of buildings, but also improving the quality of premises, equipping buildings with more advanced utility equipment, enhancing the architectural appearance of buildings, and increasing their energy efficiency. An individual approach to the development of reconstruction methods and procedures shall be taken for buildings built in different years. Furthermore, when developing a reconstruction project it is very important to use actual versions of relevant normative documents and consider the effect of structures being installed on the main load-bearing structures of a reconstructed building. It is also necessary to analyze the influence of new structures on the existing structures of the building. This work contains the analysis of behavior of reconstructed roofed market structures. Errors made during the reconstruction are highlighted. The results of analyses are described and the conclusion regarding the load-bearing capacity of the reconstructed building framework is given.