搜索结果: 1-15 共查到“知识库 生物物理学其他学科”相关记录70条 . 查询时间(4.777 秒)
Phosphorescence from the Primary Electron Donor in Rhodobacter sphaeroides and Rhodopseudomonas viridis Reaction Centers
Triplet state donor Phosphorescence Reaction center ( Rb. sphaeroides ) ( Rps. viridis ) BChl bacteriochlorophyll EDTA ethylene-diaminetetracetic acid EPR
2016/5/20
Phosphorescence has been detected from the dimeric primary electron donor in Rhodobacter sphaeroides and Rhodopseudomonas viridis reaction centers. For Rb. sphaeroides the emission maximum occurs at 1...
Effects of Nuclear Spin Polarization on Reaction Dynamics in Photosynthetic Bacterial Reaction Centers
Nuclear Spin Polarization Reaction Dynamics Photosynthetic Bacterial Reaction Centers
2016/5/20
Singlet-triplet mixing in the initial radical-pair state, P[unk]I[unk], of photosynthetic bacterial reaction centers is due to the hyperfine mechanism at low magnetic fields and both the hyperfine and...
A Simple Model of Unbounded Evolutionary Versatility as a Largest-Scale Trend in Organismal Evolution
Largest-Scale Trend Organismal Evolution
2015/7/31
The idea that there are any large-scale trends in the evolution of biological organisms is
highly controversial. It is commonly believed, for example, that there is a large-scale trend in
evolution ...
鸳鸯鸭恒定链两异构体组织转录模式研究
实时相对定量PCR 特异性转录
2014/12/29
为探索鸳鸯鸭恒定链（MDIi）两种异构体MDIi-1和MDIi-2在不同组织或器官中的转录模式，建立了检测MDIi-1和MDIi-2组织转录的实时相对定量PCR方法，检测并分析了MDIi-1和MDIi-2在不同组织或器官中的转录特点。结果显示MDIi-1在法氏囊底部的转录水平为各组织或器官中最低(设为校正器)；和校正器比较，MDIi-1在脾和小肠黏膜呈最高水平转录，而法氏囊颈部、肝、肾、胸腺和血液...
The so-called “Kelvin water dropper” is a simple experiment demonstrating the spontaneous appearance of induced free charge in droplets emitted through a tube. As Lord Kelvin explained, water droplets...
利用响应面法对Anoxybacillus sp.YIM 342产耐高温α-淀粉酶的液体发酵培养条件进行优化.在单因素试验的基础上,首先应用Plackett-Burman实验设计筛选在发酵过程中对产酶量影响较大的因素,然后利用中心组合设计确定对产酶量影响较大因素的最佳水平.筛选结果表明,淀粉和CaCl2 的浓度以及发酵时间对产酶量有显著的影响;最佳发酵条件为:淀粉11.73 g/L,CaCl2 0....
Deep determinism and the assessment of mechanistic interaction between categorical and continuous variables
mechanistic interaction categorical continuous variables
2011/1/5
Our aim is to detect mechanistic interaction between the effects of two causal factors on a binary response, as an aid to identifying situations where the effects are mediated by a common mechanism. W...
Enhancing neural-network performance via assortativity
Enhancing neural-network performance via assortativity
2011/1/5
The performance of attractor neural networks has been shown to depend crucially on the heterogeneity of the underlying topology. We take this analysis a step further by examining the effect of degree-...
Transverse conductance of DNA nucleotides in a graphene nanogap from first principles
DNA nucleotides graphene nanogap principles
2011/1/5
The fabrication of solid-state nanopores is becoming increasingly sophisticated. Recently, nanopores were successfully created in graphene and translocation of DNA has been demonstrated. Taken togethe...
What use are Exponential Weights for flexi-Weighted Least Squares Phylogenetic Trees?
Exponential Weights flexi-Weighted Least Squares Phylogenetic Trees
2011/1/5
The method of flexi-Weighted Least Squares on evolutionary trees uses simple polynomial or exponential functions of the evolutionary distance in place of model-based variances. This has the advantage ...
Are two resources really better than one? Some unexpected results of the availability of substitutes
resources unexpected results of the availability of substitutes
2011/1/5
The possibility of exploiting multiple resources is usually regarded as positive from both the economic and the environmental point of view. However, resource switching may also lead to unsustainable ...
Cooperative hierarchical structures emerging in multiadaptive games
Cooperative hierarchical structures multiadaptive games
2011/1/5
We investigate a game-theoretic model of a social system where both the rules of the game and the interaction structure are shaped by the behavior of the agents. We call this type of model, with sever...
DNA waves and water
DNA waves water
2011/1/5
Some bacterial and viral DNA sequences have been found to induce low frequency electromagnetic waves in high aqueous dilutions. This phenomenon appears to be triggered by the ambient electromagnetic b...
The algebra of the general Markov model on phylogenetic trees and networks
general Markov model phylogenetic trees
2011/1/5
It is known that the Kimura 3ST model of sequence evolution on phylogenetic trees can be extended quite naturally to arbitrary split systems. However, this extension relies heavily on mathematical pec...
Formation and Stability of Synaptic Receptor Domains
Formation Stability Synaptic Receptor Domains
2011/1/5
Neurotransmitter receptor molecules, concentrated in postsynaptic domains along with scaffold and a number of other molecules, are key regulators of signal transmission across synapses. Employing expe...