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通过分子动力学方法研究冠状病毒在不同温度和压力下的热学和流体动力学性质。

Thermal and hydrodynamic properties of coronavirus at various temperature and pressure via molecular dynamics approach.

作者信息

Malekahmadi Omid, Zarei Akbar, Botlani Esfahani Mohammad Behzad, Hekmatifar Maboud, Sabetvand Roozbeh, Marjani Azam, Bach Quang-Vu

机构信息

Department of Mining and Metallurgical Engineering, Yazd University, Yazd, Iran.

Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.

出版信息

J Therm Anal Calorim. 2021;143(3):2841-2850. doi: 10.1007/s10973-020-10353-2. Epub 2020 Nov 21.

Abstract

COVID-19 is an epidemic virus arising from a freshly discovered coronavirus. Most people involved with the coronavirus will experience slight to moderate respiratory disease and recover without needing particular therapy. In this work, the atomic stability of the coronavirus at different thermodynamic properties such as temperature and pressure, was studied. For this purpose, the manner of this virus by atomic precession was described with a molecular dynamics approach. For the atomic stability of coronavirus description, physical properties such as temperature, total energy, volume variation, and atomic force of this structure were reported. In molecular dynamics approach, coronavirus is precisely simulated via S, O, N, and C atoms and performed Dreiding force field to describe these atoms interaction in the virus. Simulation results show that coronavirus stability has reciprocal relation with atomic temperature and pressure. Numerically, after 2.5 ns simulation, the potential energy varies from - 31,163 to - 26,041 eV by temperature changes from 300 to 400 K. Furthermore, this physical parameter decreases to - 28,045 eV rate at 300 K and 2 bar pressure. The volume of coronavirus is another crucial parameter to the stability description of this structure. The simulation shows that coronavirus volume 92% and 14% increases by 100 K and 2 bar variation of simulation temperature and pressure, respectively.

摘要

新冠病毒是一种源自新发现冠状病毒的流行性病毒。大多数感染该冠状病毒的人会经历轻微至中度的呼吸道疾病,无需特殊治疗即可康复。在这项研究中,我们研究了冠状病毒在不同热力学性质(如温度和压力)下的原子稳定性。为此,我们采用分子动力学方法描述了该病毒的原子运动方式。为了描述冠状病毒的原子稳定性,我们报告了该结构的温度、总能量、体积变化和原子力等物理性质。在分子动力学方法中,通过S、O、N和C原子精确模拟冠状病毒,并采用Dreiding力场来描述这些原子在病毒中的相互作用。模拟结果表明,冠状病毒的稳定性与原子温度和压力呈反比关系。数值上,在2.5纳秒的模拟后,随着温度从300 K变化到400 K,势能从-31163电子伏特变化到-26041电子伏特。此外,在300 K和2巴压力下,该物理参数以-28045电子伏特的速率下降。冠状病毒的体积是描述该结构稳定性的另一个关键参数。模拟表明,随着模拟温度和压力分别变化100 K和2巴,冠状病毒的体积分别增加92%和14%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de46/7680216/a41bd56d40c0/10973_2020_10353_Fig1_HTML.jpg

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