Reduction of the Internal and External Oxidation of the Charge During Galvanizing Under SHS Conditions

2021 ◽  
Author(s):  
Borys Sereda ◽  
◽  
Dmytro Sereda ◽  
Keyword(s):  
External Oxidation

Shuttles of Artificial Electron Donors for Photosystem I Across the Thylakoid Membrane

1975 ◽  
Vol 30 (1-2) ◽  
pp. 37-45 ◽  
Author(s):  
G. Hauska ◽  
W. Oettmeier ◽  
S. Reimer ◽  
A. Trebst
Keyword(s):  
Photosystem I ◽  
Thylakoid Membrane ◽  
Energy State ◽  
High Energy ◽  
Atp Formation ◽  
External Oxidation ◽  
Transport Control ◽  
Energy Conserving ◽  
High Energy State ◽  
Isolated Chloroplasts

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.

Transition from internal to external oxidation in binary Ni–Zr and ternary Ni–Zr–Y alloys

2015 ◽  
Vol 94 ◽  
pp. 218-223 ◽  
Author(s):  
L. Fuhrmann ◽  
C.H. Konrad ◽  
R. Völkl ◽  
U. Glatzel
Keyword(s):  
External Oxidation

Internal and External Oxidation of Pt(Al) Solid Solution at Elevated Temperatures

2000 ◽  
Vol 147 (1) ◽  
pp. 283 ◽  
Author(s):  
Makoto Nanko ◽  
Masahiro Ozawa ◽  
Toshio Maruyama
Keyword(s):  
Solid Solution ◽  
Elevated Temperatures ◽  
External Oxidation

scholarly journals Temperature-Induced Precipitation of V2O5 in Vanadium Flow Batteries—Revisited

Batteries ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 87
Author(s):  
Emil Holm Kirk ◽  
Filippo Fenini ◽  
Sara Noriega Oreiro ◽  
Anders Bentien
Keyword(s):  
Temperature Stability ◽  
Time Lapse ◽  
High Temperature Stability ◽  
Ambient Temperatures ◽  
Operation Temperature ◽  
Batch Tests ◽  
External Oxidation ◽  
Flow Batteries ◽  
In Operando ◽  
Comprehensive Study

The maximum operation temperature of the vanadium solution in vanadium flow batteries is typically limited to 40 °C to prevent the damaging thermal precipitation of V2O5. Therefore, the operation of batteries at high ambient temperatures is an important aspect to tackle for stationary storage. In the present work, a comprehensive study of the high temperature stability of redox solutions for vanadium flow batteries was performed. In particular, focus was placed on a comparison between batch and in operando precipitation experiments. It was found that, despite being a widely used method in the literature, caution should be taken when assessing the precipitation through capacity fade due to the large influence of external oxidation and cycling parameters, plausibly leading to an incorrect interpretation of the results. The in operando experiments consistently show a precipitation temperature almost 10–20 °C higher than in the batch tests at a 100% state of charge for the same time lapse.

scholarly journals Influence of Annealing Temperature and Dew Point on Kinetics of Mn External Oxidation

2019 ◽  
Vol 105 (7) ◽  
pp. 676-682
Author(s):  
Yusuke Okumura ◽  
Minoru Tanaka ◽  
Yusuke Fushiwaki ◽  
Yasunobu Nagataki
Keyword(s):  
Annealing Temperature ◽  
Dew Point ◽  
External Oxidation ◽  
Kinetics Of
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