Cybersecurity in the Electric Power Systems of Ukraine

Kutsan, Yu.G.; Gurieiev, Viktor; Lysenko, Y.M.; Avetisyan, O.V.

doi:10.15407/emodel.41.02.063

Cited by 1 publication

(1 citation statement)

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“…Макроелементи не беруть участь в енергетичному обміні організму, але саме вони керують процесами обміну речовин, підтримують фізичну і хімічну цілісність клітин і тканин шляхом збереження характерних біоелектричних потенціалів. Кальцій -один з найважливіших мінеральних елементів годівлі, який бере участь у пластичних та обмінних процесах, у формуванні кісткової тканини (в ній зосереджено 99% його загальної кількості), входить до складу клітинних структур, він є обов'язковим компонентом системи підтримання кислотно-лужної рівноваги внутрішнього середовища організму та нормального функціонування багатьох життєво важливих систем (Malynin, 2009;Soetanto et al, 2010;Kutsan et al, 2014).…”

Section: вступunclassified

Тhe content of calcium and phosphorus in the blood of cows with a different tonus of the autonomic nervous system

et al. 2018

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Zhurenko, O.V., Karpovskiy, V.I., Danchuk, О.V., & Kravchenko-Dovga, Yu.V. (2018). Тhe content of calcium and phosphorus in the blood of cows with a different tonus of the autonomic nervous system. Scientific MessengerResearch was conducted on cows of the Ukrainian black-and-white breed of the 2-3 lactation. Tonus of the autonomic nervous system (ANS) of cows was determined using trigeminovagal reflex (TVR). According to the obtained results, an animal was designate as normotonics, sympatheticotoniсs or vagotonics. According to the results of the study of the ANS tonus, 3 experimental groups were formed 4 animals in each. The first group included animals-normotonics, the second -vagotonics, and the third one -sympatheticontics. It was established a tendency of сalcium/hosphorus lower content in the blood of cows during the warm season and higher in the winter (in the range of 3-8%). It should also be noted that there was tendency towards lower calcium content in the blood of vagotonic cows and higher -in sympatheticotoniс animals, regardless of the season. Unlike calcium, the content of phosphorus in the blood of cows significantly depended on the ANS tonus. In particular, the content of this element in the blood of sympatheticotoniс and vagotonic cows in winter was lower by 14.0% (P < 0.001) and 18.3% (P < 0.001), respectively. However, in the summer, this difference became significantly smaller and had character of a trend (at the level of 5.0-7.2%). It has been established that the calcium-phosphorus ratio in cow's blood did not depend significantly on the ANS tonus or on the season of the year, but a clear trend was established for its lower value in summer, regardless of the ANS tonus. The strength of excitability levels of the sympathetic and parasympathetic nervous system according to the results of the TVR in cows did not significantly limit the phosphorus content in their blood in summer, and calcium in winter (η 2 x = 0.00-0.019). But in normotonic animals, the ANS tonus significantly affected the calcium-phosphorus ratio -η 2 x = 0.59 (P < 0.05) and the phosphorus content in their blood -η 2 x = 0.29 (P < 0.05) in winter. It was established that ANS tonus in sympatheticotonic animals limited the phosphorus content in winter -η 2 x = 0.35 (P < 0.05) and the calcium-phosphorus ratio as in summer -η 2 x = 0.29 (P < 0.05) so in winter -η 2 x = 0.45 (P < 0.05). Whereas in vagotonic cows, the ANS tonus limited the calcium content in the summer -η 2 x = 0.26 (P < 0.05). Correlation analysis of the ANS tonus index, phosphorus and calcium content in cow's blood did not establish significant interrelationships depending on the season of the year. However, it should be noted a clear trend of direct correlation of the index of the ANS tonus with the calcium content (r = 0.24-0.35) and the calcium-phosphorus ratio (r = 0.43-44) in the cows' blood and the reverse one with the phosphorus content in the cows' blood (r = -0.22-0.30). The data obtained could indicate on the presence of autonomic regulatory mechanisms ...

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Section: вступunclassified