Cellular DNA is frequently attacked by various chemical or physical agents that cause lesions. 细胞的DNA经常受到各种物化因素的攻击而产生损伤。
Exposure assessment, an essential element for quantifying risk, is defined as " the qualitative and / or quantitative evaluation of the likely intake of biological, chemical, and physical agents via food as well as exposures from other sources if relevant ". 暴露评估,作为风险评估重要的组成部分,是对经食物或其他途径而可能摄入人体体内的生物、化学和物理因素进行的定性和/或定量评价。
FIPA ( The Foundation for Intelligent Physical Agents(PA) ) is an international organization that is dedicated to promoting the industry of intelligent agents by openly developing specifications supporting interoperability among agents and agent-based applications. FIPA致力于制定支持Agent之间和基于Agent的应用之间互操作的标准,基于FIPA规范的多Agent系统将具有很好的互操作性和可重用性。
Prion possesses uncommonly resistant activity to the inactivation of many chemical and physical agents, leading to keeping its infectivity upon the exposures of convenient disinfectants. 朊病毒(prion)具有超强的理化因素抵抗能力,可抵抗常规物理和化学因子对其感染性的灭活。
FIPA ( Foundation for Intelligent Physical Agents(PA) ) specifications are one of the widely applied standard of MAS. FIPA specifications prescribe MAS architecture, agent management, communication among agents, etc., it can realize interaction between MAS with other different architectures. FIPA(FoundationforIntelligentPhysicalAgents)规范是目前应用较为广泛的MAS标准之一,它规定了MAS的体系结构、Agent管理、Agent通信等相关问题,可以实现异构MAS间的互操作。