A biochemical mechanism for nonrandom mutations and evolution.
نویسنده
چکیده
منابع مشابه
Pareto Optimal Multi-Objective Dynamical Balancing of a Slider-Crank Mechanism Using Differential Evolution Algorithm
The present paper aims to improve the dynamical balancing of a slider-crank mechanism. This mechanism has been widely used in internal combustion engines, especially vehicle engines; hence, its dynamical balancing is important significantly. To have a full balance mechanism, the shaking forces and shaking moment of foundations should be eliminated completely. However, this elimination is usuall...
متن کاملPareto Optimal Balancing of Four-bar Mechanisms Using Multi-Objective Differential Evolution Algorithm
Four-bar mechanisms are widely used in the industry especially in rotary engines. These mechanisms are usually applied for attaining a special motion duty like path generation; their high speeds in the industry cause an unbalancing problem. Hence, dynamic balancing is essential for their greater efficiency. In this research study, a multi-objective differential evolution algorithm is used for P...
متن کاملOn the Adaptive Design Rules of Biochemical Networks in Evolution
Biochemical networks are the backbones of physiological systems of organisms. Therefore, a biochemical network should be sufficiently robust (not sensitive) to tolerate genetic mutations and environmental changes in the evolutionary process. In this study, based on the robustness and sensitivity criteria of biochemical networks, the adaptive design rules are developed for natural selection in t...
متن کاملStress-directed adaptive mutations and evolution.
Comparative biochemistry demonstrates that the metabolites, complex biochemical networks, enzymes and regulatory mechanisms essential to all living cells are conserved in amazing detail throughout evolution. Thus, in order to evolve, an organism must overcome new adverse conditions without creating different but equally dangerous alterations in its ongoing successful metabolic relationship with...
متن کاملجهش های ژن gyrA در جدایه های سودوموناس آئروزینوزا مقاوم به فلوروکوئینولون ها در استان گیلان
Background and purpose: Pseudomonas aeruginosa is an opportunistic pathogen in patients with chronic respiratory disease or in immunocompromised hosts. This bacterium shows intrinsic and acquired resistance to diverse antimicrobial agents. An important mechanism of resistance to fluoroquinolones in P. aeruginosa is the mutation in gyrA, a subunit of topoisomerases II. The aim of this study was ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Journal of bacteriology
دوره 182 11 شماره
صفحات -
تاریخ انتشار 2000