Advances in Biomimetics in Imitation of the Laws of Nature

Nasretdinova, M T; Utemuratova, Gulnarakhan; Dawletmuratov, Adilbay; Матвеев, А. К.; Kaigorodov, Denis; Kalinin, E. V.; Mustaev, Oleg

doi:10.4028/www.scientific.net/jbbbe.53.77

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…Для таких пациентов характерно развитие ХСН с сохраненной систолической функцией ЛЖ. Этому также способствуют прогрессирующие с возрастом фиброзные изменения миокарда и развитие кардиосклероза [1,[8][9][10]. Для пожилых пациентов обычно характерно наличие диастолической дисфункции 1-го типа с «замедленным» расслаблением миокарда, что характеризуется снижением максимальной скорости раннего трансмитрального диастолического кровотока (Е), компенсаторным увеличением максимальной скорости трансмитрального кровотока во время систолы предсердий (А) и соответствующим уменьшением соотношения Е/Аꞌ [11,13,14].…”

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The Importance of Echocardiography in the Detection of Early Chronic Heart Failure in Elderly Patients

Агабабян¹,

Ярашева²,

Насретдинова³

2022

Кардиология В Беларуси

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Цель. Изучить состояние центральной гемодинамики у пациентов пожилого возраста по данным эхокардиографии с целью выявления доклинической фазы хронической сердечной недостаточности.Материалы и методы. В исследование включены пациенты в возрасте 65–75 лет (средний возраст 76,17±3,29 года), которым выполнено стентирование коронарных артерий после перенесенного инфаркта миокарда (40 человек), и пациенты, которые остались на стандартной терапии ишемической болезни сердца после перенесенного инфаркта миокарда (40 человек). Производилась оценка характера послеоперационных изменений эхокардиографических значений.Результаты. В ходе исследования обнаружено, что у лиц пожилого возраста, которым было проведено стентирование коронарных артерий, отмечается достоверное снижение фракции выброса левого желудочка по сравнению с группой пациентов, которые остались на стандартной терапии ишемической болезни сердца. У пациентов, перенесших инфаркт миокарда, которым проведено стентирование коронарных артерий, несмотря на сохранную систолическую функцию левого желудочка, величина фракции выброса левого желудочка была достоверно ниже, чем в группе сравнения.Заключение. Вопрос стентирования коронарных артерий у пациентов пожилого возраста должен тщательно обсуждаться, особенно когда имеется коморбидная патология. Необходимо проводить исследования, направленные на длительное наблюдение пациентов после чрескожного коронарного вмешательства, а также для подтверждения или исключения хронической сердечной недостаточности у всех пациентов изучить уровень натрийуретического пептида. Purpose. To study the state of central hemodynamics in elderly patients according to echocardiography in order to identify the preclinical phase of chronic heart failure.Materials and methods. The study included patients aged 65–75 years (average age 76.17±3.29 years) who underwent coronary artery stenting after a myocardial infarction (40 patients) and patients who remained on standard therapy for coronary heart disease after a myocardial infarction (40 patients). The nature of postoperative changes in echocardiographic values was evaluated.Results. During the study, it was found that in elderly people who had coronary artery stenting, there was a significant decrease in the left ventricular ejection fraction compared to the group that remained on standard therapy for coronary HEART disease. In patients with myocardial infarction who underwent coronary artery stenting, despite the preserved systolic function of the left ventricle, the value of the left ventricular ejection fraction was significantly lower than in the comparison group.Conclusion. The issue of coronary artery stenting in elderly patients should be carefully discussed, especially when there is a comorbid pathology. It is necessary to conduct studies aimed at long-term follow-up of patients after per cutaneous intervention, as well as to confirm or exclude chronic heart failure, all patients should study the level of natriuretic peptide.

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The Importance of Echocardiography in the Detection of Early Chronic Heart Failure in Elderly Patients

Агабабян¹,

Ярашева²,

Насретдинова³

2022

Кардиология В Беларуси

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“…Nature being smart, rational, and innovative helps to solve many problems by giving solutions in different aspects like shape, principle, materials for structural creation and it is called as biomimicry or biomimetics [1,2]. This kind of application paves the way for structural aesthetics in the construction field.…”

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Optimizing Mesh Sizes of Thin Shells Using Biomimicry for a Sustainable Solution

Gunasekaran,

Nachiar,

Sekar

2023

JBBBE

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Nature always has the ability to offer various solutions in day-to-day life of humans in various fields of engineering and science. The term biomimicry refers to the process of adopting solutions from nature to solve complicated problems that refers to analysing the environment for sustainable solutions. This concept is used in various fields of engineering and science. This concept is emerging now in the field of construction also. Biomimics concept is used in analysing the behaviour of structural elements which forms a symbiosis between the environment and construction. In the field of construction, thin shell structures are lightweight structures that are preferred as roof elements for covering high spans and also gives an aesthetic appearance. In this study, three different shapes like spherical with different rise to span ratios, circular and elliptical are considered. The concept of reflecting the human skull shape into thin shell structures was considered, because the reflection from the environment helps in solving the complicated problems of both engineering and sciences. This study focused on the mesh convergence study for numerical analysis using Ansys 18.1 software. The parameters of the thin shells such as thickness, span and rise were taken from the geometrical characteristics of scanned human skull models in comparison with the standard skull models. From the results, mesh sizes were optimized for the three different shapes considered and also predicted the most efficient model. These results were obtained based on the equivalent stress in comparison with the theoretical stresses of the respective models. This study inspires the naturally available forms in the environment to incorporate it in the field of construction and technology for a sustainable solution.

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Advances in Biomimetics in Imitation of the Laws of Nature

Cited by 2 publications

References 12 publications

The Importance of Echocardiography in the Detection of Early Chronic Heart Failure in Elderly Patients

The Importance of Echocardiography in the Detection of Early Chronic Heart Failure in Elderly Patients

Optimizing Mesh Sizes of Thin Shells Using Biomimicry for a Sustainable Solution

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