Toxicity Testing of Chemicals without Use of Animals. Ostroumov S.A. Russian Journal of General Chemistry. 2016, Vol. 86, No. 13, pp. 2933–2941. https://www.academia.edu/works/44042634/ ; bioethics, bioassay,alternative methods, phytotest, non-animal, testing, toxicology, ecotoxicology, surfactant, detergent, plant seedlings, ПАВ, фитотест, фитотоксичность, детергент, биотестирование, Статья полезна для расширения использования гуманных методов тестирования химических веществ и водных сред без использования животных. Суммирован опыт автора по использованию тестирования на растениях, в том числе на проростках и семенах высших растений. Предложены и апробированы новые методики биотестирования на растениях. Эти методики были успешно использованы автором для выявления и характеристики токсичности синтетических ПАВ и детергентов, в том числе широко используемых в жизни человека. https://5bio5.blogspot.com/2020/09/toxicity_9.html

The paper is devoted to improvement of technique of designing of bearing structure of track machines bodies. The review and analysis of state-of-the-art of the mathematical programming theory and the optimal designing are done. The numerical optimization procedure for bearing structures of track machines bodies is proposed. The approbation of the proposed procedure is taken on the number of problems of structural optimization. The number of the mathematical aspects of implementation of the proposed procedure are investigated, particularly the algorithm convergence and the sensitivity analysis of initial designs. The deflected mode of the bearing structure of body of the ballast leveling machine SPZ-5/UA was investigated analytically (FEM study) and experimentally (trial running inspection on durability). The necessity of implementation of optimization of bearing structures of bodies is substantiated. The rational design of bearing structure of track machine SPZ-5/UA was obtained with the numerical optimization procedure proposed in the paper. The deflected mode of the rational bearing structure of body was investigated.

The purpose of research described in the current study is the psychological reliability, its’ importance, application, and more to investigate on the impact analysis of psychological reliability of population pilot study for selection of particular reliable multi-choice item test in foreign language research work. The population for subject recruitment was all under graduated students from second semester at large university in Iran (both male and female) that study English as a compulsory paper. In Iran, English is taught as a foreign language.