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Polysulfide utilization by Thiocapsa roseopersicina
Archives of Microbiology, 1990The purple sulfur bacterium Thiocapsa roseopersicina, being the dominant anoxygenic phototroph in microbial mats, was tested for growth on polysulfide as the electron donor for carbon dioxide fixation. Data collected in continuous cultures revealed μmax to be 0.065 h-1 and the saturation affinity constant K s to be 6.7 μM.
VISSCHER, PT +2 more
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Cyclic polysulfides fused to polyaromatics
Tetrahedron, 2007AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Ashraful Alam +3 more
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Unusual Thermolysis of Diisobutyl Polysulfides.
ChemInform, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
N. A. Korchevina +2 more
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Formation of Polysulfides in Aqueous Solution
Environmental Letters, 1973Abstract Polysulfides are found to be the reaction intermediates in the oxygenation of aqueous sulfide. The pH dependence of the reaction rates is directly related to the formation of polysulfides. In general, the peak of polysulfide concentrations fall within the range pH 7.0 ± 0.4, and decrease drastically in both acidic and alkaline solutions. Under
K Y, Chen, S K, Gupta
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1977
Disulfides and polysulfides have the structure R1SSnR2, in which chains of sulfur atoms are terminated by two groups that may be the same, different, or connected in a ring. Chapter 7 considers only substances where the S-R bond involves a carbon linkage; a review is available of structures such as ROSnOR and R2NSnNR2) Disulfides (n = 1) and their ...
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Disulfides and polysulfides have the structure R1SSnR2, in which chains of sulfur atoms are terminated by two groups that may be the same, different, or connected in a ring. Chapter 7 considers only substances where the S-R bond involves a carbon linkage; a review is available of structures such as ROSnOR and R2NSnNR2) Disulfides (n = 1) and their ...
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Electrochemistry of Sulfur and Polysulfides in Ionic Liquids
The Journal of Physical Chemistry B, 2011The electrochemistry of elemental sulfur (S(8)) and the polysulfides Na(2)S(4) and Na(2)S(6) has been studied for the first time in nonchloroaluminate ionic liquids. The cyclic voltammetry of S(8) in the ionic liquids is different to the behavior reported in some organic solvents, with two reductions and one oxidation peak observed.
Manan, Ninie S. A. +6 more
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1976
The paper deals briefly with the chemistry and formulation of polysulfide liquid polymers. It is primarily concerned with areas of application and performance of compounds based on the various liquid polymers. Criteria for the use of polysulfide sealants in the aircraft, automotive, building, and marine industries are given along with some case ...
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The paper deals briefly with the chemistry and formulation of polysulfide liquid polymers. It is primarily concerned with areas of application and performance of compounds based on the various liquid polymers. Criteria for the use of polysulfide sealants in the aircraft, automotive, building, and marine industries are given along with some case ...
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Disulfide interchange in polysulfide polymers
Journal of Polymer Science, 1956AbstractA study has been made on the effect of thiols and disulfides on lowering the molecular weight of polysulfide polymers. It was shown that in the presence of aqueous sodium disulfide there is an interchange of chain segments. This effect is observable if a simple organic disulfide is present in the system, resulting in a lower molecular weight ...
E. R. Bertozzi +2 more
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Rubber Chemistry and Technology, 1951
Abstract Polysulfide liquid polymers are a comparatively recent development conceived at the Thiokol Laboratories in 1943. The development was initiated by the problem of finding methods to reduce the molecular weight of a polysulfide rubber which was too tough to process on conventional rubber milling equipment.
J. S. Jorczak, E. M. Fettes
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Abstract Polysulfide liquid polymers are a comparatively recent development conceived at the Thiokol Laboratories in 1943. The development was initiated by the problem of finding methods to reduce the molecular weight of a polysulfide rubber which was too tough to process on conventional rubber milling equipment.
J. S. Jorczak, E. M. Fettes
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Hydrogen Sulfide and Polysulfide Signaling
Antioxidants & Redox Signaling, 2017Hydrogen sulfide (H2S) has been demonstrated to have physiological roles such as neuromodulation, vascular tone regulation, cytoprotection, oxygen sensing, inflammatory regulation, and cell growth. Recently, hydrogen polysulfides (H2Sn) have been found to be produced by 3-mercaptopyruvate sulfurtransferase and to regulate the activity of ion channels ...
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