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Energetics of Initial Charge Separation in Bacterial Photosynthesis:The Triplet Decay Rate in Very High Magnetic Fields
Photosynthesis Electron transfer Reaction center Magnetic field effect primary electron acceptor primary electron donor quinone
2016/5/20
The triplet state of the primary electron donor is formed in bacterial reaction centers when electron transfer to the quinone is blocked. The relative quantum yield of formation and the rate of decay ...
Magnitude and Direction of the Change in Dipole Moment Associated with Excitation of the Primary Electron Donor in Rhodopseudomonas sphaeroides Reaction Centers
solar energy photosynthetic reaction centers absorption spectroscopy dipole moments rhodopseudomonas biochemistry excitation stark effect valence bacteria
2016/5/20
The magnitude and direction of the change in dipole moment, ..delta mu.., associated with the Q/sub y/ transition of the dimeric primary electron donor (special pair or P870) in Rhodopseudomonas sphae...
Reversible Photochemical Holeburning in Rhodopseudomonas viridis Reaction Centers
Reversible Photochemical Holeburning Rhodopseudomonas viridis Reaction Centers
2016/5/20
The change in absorption of the band assigned to the primary electron donor in R. Vfrid is reaction centers (P96Q) has been measured at 1.4-2.1 K following narrow bandwidth excitation at many waveleng...
Excitation Transport and Trapping in a Synthetic Chlorophyllide Substituted Hemoglobin:The Orientation of the Chlorophyll S1 Transition Dipole
Excitation Transport Synthetic Chlorophyllide Substituted Hemoglobin Chlorophyll S1 Transition Dipole
2016/5/20
Excitation transport in synthetic zinc chlorophyllide substituted hemoglobin has been observed by picosecond time-resolved fluorescence depolarization experiments.In this hybrid molecular system, two ...
Chlorophyllide-substituted Hemoglobin Tetramers and Hybrids:Preparation,Properties and Energy Transfer
Chlorophyllide Hemoglobin Tetramers Hybrids Preparation Properties Energy Transfer
2016/5/20
Three chlorophyllide-substitutedhuman hemoglobin (Hb) complexes have been prepared: the tetrameric complex in which zinc pyrochlorophyllide a (ZnPChla) is substituted for all four hemes and the two co...
Chlorophyll-Amino Acid Interactions in Synthetic Models
Chlorophyll Amino Acid Interactions Synthetic Models
2016/5/20
A number of amino acids and molecules ofrelated functionality have been covalently connected to pyrochlorophyllide a (PCbla) and bacteriopyrochlorophyllide a (BPCbla) to determine their impact on the ...
A Structural Model for the Photosynthetic Reaction Center
Structural Model Photosynthetic Reaction Center
2016/5/20
We describe here the synthesis and characterization of the solution conformation of a molecule which brings into close proximity the principal molecular components believed to participate in the initi...
A Covalently Bound Dimeric Derivative of Pyrochlorophyllide a. A Possible Model for Reaction Center Chlorophyll
Dimeric Derivative Pyrochlorophyllide Reaction Center Chlorophyll
2016/5/20
Molecular aggregation of chlorophyll has been the subject of intense study in several While there is good evidence for keto carbonyl-Mg interactions in nonbasic solvents, there is much less structural...
不同栝楼品种各药用部位无机元素含量比较
栝楼 不同器官 无机元素分布
2012/3/20
以山东道地药材栝楼为研究对象，分别对仁瓜蒌和糖瓜蒌两个品种皮、籽中Ca，Mg，Fe，Mn，Cu，Zn的含量进行分析测定；同时对雌、雄栝楼的天花粉中无机元素的含量进行研究。结果表明，两个栝楼品种中的微量元素含量在皮和籽中基本没有差别，但是不同无机元素的分布不一致。其中Ca在瓜蒌皮中的含量达到0.25%~0.28%，在籽中的含量为0.1%；而其它无机元素则基本以籽中的含量较高；雌栝楼天花粉中的微量元素...
Including transcription factor information in the superparamagnetic clustering of microarray data
Including transcription factor information superparamagnetic clustering
2011/1/5
In this work, we modify the superparamagnetic clustering algorithm (SPC) by adding an extra weight to the interaction formula that considers which genes are regulated by the same transcription factor....
Characterization of the norepinephrine-activation of adenylate cyclase suggests a role in memory affirmation pathways. Overexposure to epinephrine inactivates adenylate-cyclase,a causal pathway for stress-pathologies
the norepinephrine-activation adenylate cyclase suggests
2011/1/5
Incubation with noradrenaline (norepinephrine) of isolated membranes of rat's brain corpus striatum and cortex, showed that ionic-magnesium (Mg2+) is required for the neurotransmitter activatory respo...
Time and category information in pattern-based codes
category information pattern-based codes
2011/1/5
Sensory stimuli are usually composed of different features (the what) appearing at irregular times (the when). Neural responses often use spike patterns to represent sensory information. The what is h...
A Stochastic Markov Model for Coordinated Molecular Motors
Markov Model Coordinated Molecular Motors
2011/1/6
Many cell functions are accomplished thanks to intracellular transport mechanisms of macromolecules along filaments. Molecular motors such as dynein or kinesin are proteins playing a primary role in t...
Detection of mixed-culture growth in the total biomass data by wavelet transforms
mixed-culture growth total biomass data
2011/1/5
We have shown elsewhere that the presence of mixed-culture growth of microbial species in fermentation processes can be detected with high accuracy by employing the wavelet transform. This is achieved...
Hocus-Socus: An Error Catastrophe for Complex Hebbian Learning Implies Neocortical Proofreading
Hocus-Socus Error Catastrophe Complex Hebbian Learning Neocortical Proofreading
2011/1/5
The neocortex is widely believed to be the seat of intelligence and "mind". However, it's unclear what "mind" is, or how the special features of neocortex enable it, though likely "connectionist" prin...