Surface-Mediated Iron on Porous Cobalt Oxide with High Energy State for Efficient Water Oxidation Electrocatalysis

Abstract NADP+ reduction in isolated chloroplasts of spinach by photosystem I at the expense of various artificial donor systems is not inhibited by the plastoquinone antagonist dibromothymoquinone. The coupled ATP formation in such photoreductions is attributed to an artificial energy conserving site, i. e. a proton liberation during oxidation of the donor at the inner surface of the thylakoid membrane. Some donor systems for photosystem I are stimulated by uncouplers whereas others are not. The stimulation shows no correlation to the efficiency of the coupled photophosphorylation. Instead a correlation of the stimulation by uncouplers to the presence of an acidic OH-group in the donor molecule is seen. The uncoupler effect is therefore not explained by a release of electron transport control by the high energy state but rather by a pH-dependent distribution of the donor compound across the membrane. This is supported by the properties of donor systems in sonicated chloroplast particles with external oxidation sites of photosystem I.

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Effects of low temperatures on formation and conservation of high energy state (Xe) appearing in spinach chloroplasts during the light step of the two-stage phosphorylation: I. — Formation of Xe below 0°C II. — Conservation of Xe between −30°C and −196°C

Biochemical and Biophysical Research Communications ◽

10.1016/s0006-291x(75)80385-8 ◽

1975 ◽

Vol 65 (4) ◽

pp. 1400-1408 ◽

Cited By ~ 6

Author(s):

E. Tyszkiewicz ◽

E. Roux

Keyword(s):

Low Temperatures ◽

Energy State ◽

High Energy ◽

Two Stage ◽

Spinach Chloroplasts ◽

High Energy State

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The Control of the Adenosine Triphosphatase of Rhodospirillum rubrum Chromatophores by Divalent Cations and the Membrane High Energy State

European Journal of Biochemistry ◽

10.1111/j.1432-1033.1976.tb10091.x ◽

1976 ◽

Vol 62 (1) ◽

pp. 7-14 ◽

Cited By ~ 25

Author(s):

Patricia A. EDWARDS ◽

J. Barry JACKSON

Keyword(s):

Adenosine Triphosphatase ◽

Rhodospirillum Rubrum ◽

Divalent Cations ◽

Energy State ◽

High Energy ◽

High Energy State

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Delayed Fluorescence and the High-Energy State of Chloroplasts

European Journal of Biochemistry ◽

10.1111/j.1432-1033.1971.tb01328.x ◽

1971 ◽

Vol 19 (3) ◽

pp. 386-397 ◽

Cited By ~ 144

Author(s):

Colin A. Wraight ◽

Antony R. Crofts

Keyword(s):

Energy State ◽

High Energy ◽

Delayed Fluorescence ◽

High Energy State

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Exciting hot carrier to a high energy state by impact excitation in low density nanocrystalline Si films

Physica B Condensed Matter ◽

10.1016/j.physb.2012.11.034 ◽

2013 ◽

Vol 411 ◽

pp. 122-125

Author(s):

Wei Yu ◽

Xinzhan Wang ◽

Wanlei Dai ◽

Yumei Liu ◽

Yanmei Xu ◽

...

Keyword(s):

Energy State ◽

High Energy ◽

Impact Excitation ◽

Low Density ◽

Hot Carrier ◽

High Energy State ◽

Si Films ◽

Nanocrystalline Si

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Evolution of Carbides during Prestrain and Tempering

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1016.82 ◽

2021 ◽

Vol 1016 ◽

pp. 82-87

Author(s):

Wen Hong Ding ◽

Bo Jiang ◽

Chao Lei Zhang ◽

Ya Zheng Liu ◽

Li Sun ◽

...

Keyword(s):

Stress Relaxation ◽

Dynamic Equilibrium ◽

Energy State ◽

High Strength ◽

High Energy ◽

Material Strength ◽

Low Carbon ◽

The Matrix ◽

High Energy State ◽

Two Stages

The effect of thermo-mechanical treatment on the microstructural evolution of low carbon micro-alloyed high strength steel was studied by combining prestrain with tempering (PST) in this paper. It was found that the prestrain causes the dislocation to plug up around the grain boundary and carbide, resulting in carbide boundary fragmentation. Moreover, it breaks the thermo-dynamic equilibrium between the matrix and carbide, induces the dissolution of carbon in the high energy state, and then changes the distribution of carbon in the matrix. In the subsequent tempering process, the precipitation regularity of carbide was changed, which promoted the precipitation carbide at low temperature. The influence of carbide precipitation on dislocation can be divided into two stages: the first stage was precipitation induced creep, which promoted stress relaxation; the second stage was precipitation pinning dislocation, which improved material strength and inhibited stress relaxation.

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