一个基于冷大气DBD等离子体脱污动力学的透理论的格子模型
Hao Wang1, Qiong Wu2, Liyang Zhang2
1School of Electrical Engineering, Chongqing University, Chongqing 400044, China; Department of Electrical Engineering, Tsinghua University, Beijing 100084, China.
Food research international (Ottawa, Ont.)
|January 15, 2024
概括
一个新的格子模型解释了等离子体灭菌过程中的细菌失活,揭示了子聚合,而不仅仅是抵抗,导致尾巴现象. 该模型提高了对灭菌动力学的理解,并指导了实际的等离子体应用.
科学领域:
- 微生物学 微生物学
- 等离子体物理学的物理学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 在等离子体灭菌过程中,细菌失活曲线中的尾巴现象尚不清楚.
- 经典模型将尾巴归因于细菌耐药性,但实验证据表明空间分布.
研究的目的:
- 开发一种新的无活化动力学模型,以解释等离子体灭菌过程中的空间异质性.
- 通过考虑不均的子和血分布来解释尾巴现象.
主要方法:
- 一个基于透理论的格子模型被开发出来.
- 该模型包含集群和非集群子分布.
- 对影响无活化动态的子和血参数进行系统分析.
主要成果:
- 该模型准确地描述了等离子体灭菌生存曲线,包括多阶段和长尾现象.
- 它通过区分短尾和长尾组合来解释尾巴现象.
- 血空间分布概率的增加被证明可以减少整体杀死时间.
结论:
- 空间异质性,特别是子聚类,是等离子灭菌中尾巴现象的关键驱动因素.
- 拟议的模型为观察到的无活化动力学提供了可靠的解释.
- 研究结果为优化等离子体灭菌提供了实际指导,特别是在食品表面除菌方面.
相关概念视频
Trends in Lattice Energy: Ion Size and Charge
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
The Debye–Hückel Theory of Electrolyte Solutions
The Debye–Hückel theory, established by Peter Debye and Erich Hückel in 1923, is a fundamental concept in physical chemistry. It provides an understanding of the behavior of strong electrolytes in solution, particularly explaining their deviations from ideal behavior.The theory is based on Coulombic interactions (the attraction or repulsion between charged particles) between ions in solution. In an ionic solution, oppositely charged ions tend to attract each other. This means that cations...
Debye–Huckel–Onsager Conductance Equation
The Debye-Hückel-Onsager equation is a cornerstone of physical chemistry, providing a method to determine the molar conductance (Λm) and molar conductance at infinite dilution (Λ°m) for uni-univalent electrolytes.Uni-univalent electrolytes are electrolytes that dissociate in solution to produce one cation with a +1 charge and one anion with a –1 charge per formula unit.This equation addresses two crucial phenomena: the asymmetry effect and the electrophoretic effect. According to this equation,...
Lattice Energies of Ionic Crystals
Lattice energy represents the energy released when gaseous cations and anions combine to form an ionic solid, reflecting the strength of electrostatic interactions within the crystal. This process is fundamentally governed by Coulombic attraction between oppositely charged ions, where the potential energy varies inversely with the interionic distance and directly with the product of ionic charges. As ions approach one another, the electrostatic energy becomes increasingly negative, indicating a...
Theories of Dissolution: Diffusion Layer Model
Dissolution, the process by which drug particles dissolve in a solvent, is explained by the diffusion layer model, a theoretical framework that simulates the absorption of oral drugs and allows us to analyze experimental data.
This process starts with a thin layer, saturated with the drug, forming at the interface between the solid and liquid. The solute then diffuses from this layer into the main solution. The Noyes-Whitney equation suggests that the rate of dissolution relies on the diffusion...
This process starts with a thin layer, saturated with the drug, forming at the interface between the solid and liquid. The solute then diffuses from this layer into the main solution. The Noyes-Whitney equation suggests that the rate of dissolution relies on the diffusion...
Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model
Various dissolution theories provide insight into the factors that influence the dissolution rate. Danckwerts' Model suggests that turbulence, rather than a stagnant layer, characterizes the dissolution medium at the solid-liquid interface. In this model, the agitated solvent contains macroscopic packets that move to the interface via eddy currents, facilitating the absorption and delivery of the drug to the bulk solution. The regular replenishment of solvent packets maintains the concentration...


