Now showing items 51-60 of 919
The mechanism of amine inhibition of the photosynthetic oxygen evolving complex : Amines displace functional chloride from a ligand site on manganese
(Elsevier, 1983-10-17)
Amines inhibit photosynthetic oxygen evolution by binding to manganese in the oxygen evolving complex. This inhibition is more effective if chloride is absent. Steady-state kinetic analyses show that ammonia and chloride ...
Fluorescence Yield Near Edge Spectroscopy (FYNES) of benzene adsorbed in Na-Y zeolite
(Baltzer Science Publishers, Baarn/Kluwer Academic Publishers; J.C. Baltzer AG, Scientific Publishing Company ; Springer Science+Business Media, 1990-01)
Benzene adsorbed in sodium-Y zeolite has been investigated using Fluorescence Yield Near Edge Spectroscopy (FYNES). These studies demonstrate that FYNES measurements are feasible as a direct probe of the local electronic ...
The emission of K-X-rays in slow neutron fission of 233U, 235U, and 239Pu
(Elsevier, 1969-10)
Percolation and cluster distribution. III. Algorithms for the site-bond problem
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1979-11)
Algorithms for estimating the percolation probabilities and cluster size distribution are given in the framework of a Monte Carlo simulation for disordered lattices for the generalized site-bond problem. The site-bond ...
Energy‐Moment Methods in Quantum Mechanics
(The American Institute of Physics, 1967-10-15)
Three quantum‐mechanical computational techniques based on energy moments, μk = ∫ dqψ*(q)Hkψ(q)μk=∫dqψ*(q)Hkψ(q), and semimoments, νk(q′) = [Hkψ(q)]q = q′νk(q′)=[Hkψ(q)]q=q′, are formulated. The μ method, which employs the ...
Grazing‐angle characterization of photosynthetic oxygen evolution protein monolayers
(The American Institute of Physics, 1996-09)
Variable‐period x‐ray standing wave (XSW) spectroscopy has been shown to be a practical probe for studying metalloproteins. The photosynthetic oxygen evolving complex (OEC) is a transmembrane multipolypeptide complex that ...
Monovalent cations (Na+, K+, Cs+) inhibit calcium activation of photosynthetic oxygen evolution
(Elsevier, 1989-02-13)
In the absence of the 17 and 23 kDa water-soluble polypeptides, the oxygen-evolving complex of photosystem II requires addition of Cl- and Ca2+ to maximize rates of oxygen evolution activity. We have found that monovalent ...
Carbon Sequestration in Synechococcus Sp.: From Molecular Machines to Hierarchical Modeling
(Mary Ann Liebert, Inc., publishers, 2002-10-01)
The U.S. Department of Energy recently announced the first five grants for the Genomes to Life (GTL) Program. The goal of this program is to "achieve the most far-reaching of all biological goals: a fundamental, comprehensive, ...
Microwave spectra of C2H4⋅H2O and isotopomers
(The American Institute of Physics, 1993-01-15)
The rotational spectrum of the ethylene‐water complex has been reexamined using Fourier‐transform microwave spectroscopy. Several new transitions were observed in the spectrum of the normal isotopic species. All the ...