当刺激出现后,病毒迅速通过内部正反馈环(positive-feedback loops)启动基因转录,产生蛋白。如果病毒所处的环境被很好 … www.ebiotrade.com|基于 1 个网页 2. 正向回馈调控机制 可怕的是,病毒的正向回馈调控机制(positive-feedback loops)能够将基因启动的过程无限放相关主题关键词: HIV 调控 机… ...
When Vinchanges, negative feedback changes the input to the amplifier in order to counteract the effect of the change in Vin. Conversely, positive feedback increases the effects of the change in Vin. The output (Vout) is equal to the sum of the Vinand feedback signals multiplie...
Positive feedback loops intensify or amplify changes to a system. This can cause a system to move away from its state of equilibrium and destabilize it. What's an example of a positive feedback loop? In polar regions, the frozen permafrost contains a lot of the powerful greenhouse gas metha...
When Vinchanges, negative feedback changes the input to the amplifier in order to counteract the effect of the change in Vin. Conversely, positive feedback increases the effects of the change in Vin. The output (Vout) is equal to the sum of the Vinand feedback signals multip...
Nature Plants: Regional fire–greening positive feedback loops in Alaskan Arctic tundra Tony Chen Photography & Geography, Maryland-based3 人赞同了该文章 《自然》杂志子刊《自然—植物》(Nature Plants)今天上线了我的一篇文章,汇报了我过去八年来所从事的一个项目的成果。文章的地址是nature.com/articles/...
4.1.2 Feedback loops Feedback loops are, “The secondary effects of a direct effect of one variable on another, they cause a change in the magnitude of that effect. A positive feedback enhances the effect; a negative feedback dampens it” (Walker and Salt, 2006, p. 163). Feedback lo...
2012. Effect of positive feed- back loops on the robustness of oscillations in the network of cyclin- dependent kinases driving the mammalian cell cycle. FEES 1. 2W3411-3431.Gerard C., Gonze D., and Goldbeter A., Effect of positive feedback loops on the robustness of oscilla- tions in...
Linking fast and slow positive feedback loops creates an optimal bistable switch in cell signaling:结合快速与慢速的正反馈循环创造最佳的双稳态开关信号的细胞an,帮助,fast,and,slow,loops,Loop 文档格式: .pdf 文档大小: 666.59K 文档页数: 8页
Mathematical simulations revealed that linking fast and stow positive feedback loops creates a "dual-time" switch that is both rapidly inducible and resistant to noise in the upstream signaling system. 展开 关键词: MAP KINASE ACTIVATION DIFFERENTIATION GTPASE SPECIFICATION POLARIZATION NETWORKS POLARITY ...
The two element mutual activation and inhibitory positive feedback loops are a common motifs that occur in many biological systems in both isolated and interlocked form, as for example, in the cell division cycle and thymus differentiation in eukaryotes. The properties of three element interlocked po...