The role of sulfate ions on distinctive defect emissions in ZnO:Ce3+ nanophosphors - A study on the application in color display systems

Aragonite formation and stabilisation in seawater is still an area of active investigation since the thermodynamically stable product at room temperature is calcite. In this manuscript, purely inorganic systems that were found to stabilise aragonite were analysed by various techniques. Dynamic Light Scattering was used to characterise the nucleation behaviour of the system and it was found that the presence of magnesium ions during crystal formation inhibits nucleation overall, not just calcite nucleation. In addition, it was found that sulfate is not necessary to stabilise aragonite. Microanalysis by energy dispersive X-ray spectroscopy (EDS) and electron backscatter diffraction (EBSD) revealed that the aragonite that was formed had a disordered core with, sodium, magnesium and sulfate ions incorporated into the structure. To the best of the authors’ knowledge this is the first time an ACC core in aragonite has been visualised in a completely abiotic, synthetic system (in the absence of organic molecules). Inclusion of these impurities into the structure may explain the stability of aragonite in natural seawaters.

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Brightness improvement of color display systems using white sub-pixel structure and mapping algorithm

30th Annual Conference of IEEE Industrial Electronics Society, 2004. IECON 2004 ◽

10.1109/iecon.2004.1431724 ◽

2005 ◽

Author(s):

Chih-Chang Lai ◽

Ching-Chih Tsai ◽

Han-Chang Lin

Keyword(s):

Mapping Algorithm ◽

Color Display ◽

Display Systems

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Recent developments in beam-index color-display systems

10.1109/iedm.1970.188326 ◽

1970 ◽

Cited By ~ 2

Author(s):

P.M. van den Avoort

Keyword(s):

Color Display ◽

Recent Developments ◽

Display Systems

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A role of sulfate ions in the flotation of iron (III) hydroxide.

BUNSEKI KAGAKU ◽

10.2116/bunsekikagaku.33.10_563 ◽

1984 ◽

Vol 33 (10) ◽

pp. 563-565

Author(s):

Masataka HIRAIDE ◽

Masumi KUBO ◽

Atsushi MIZUIKE

Keyword(s):

Sulfate Ions

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Identification of Cartographic Symbols from TV Displays

Human Factors The Journal of the Human Factors and Ergonomics Society ◽

10.1177/001872087301500104 ◽

1973 ◽

Vol 15 (1) ◽

pp. 21-31 ◽

Cited By ~ 9

Author(s):

Kam W. Wong ◽

Nick G. Yacoumelos

Keyword(s):

United States ◽

Maximum Level ◽

Image Resolution ◽

United States Geological Survey ◽

Color Display ◽

Black And White ◽

Resolution Capability ◽

Resolution Level ◽

Display Systems ◽

Better Than

An experiment was conducted to investigate the resolution capability of TV displays in distinguishing details from line-maps and picto-maps, and to establish the relative merits of color and black-and-white TV display systems. The experimental variables included two display types, three map types, four symbol types, and three image-resolution levels. The results showed that a color display offered some advantage over a black-and-white display of equivalent effective resolution. However, a black-and-white system could provide the same performance at the expense of a slightly higher effective resolution. At an image-resolution level of nine TV-lines/mm, alphanumeric symbols were identified almost 100% correctly for all map types and display types. Area and line symbols achieved their maximum level of performance at five and seven TV-lines/mm, respectively. United States Geological Survey (USGS) 1:24,000 maps were significantly better than TOPOCOM line-maps and picto-maps.

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Biogenic factors of geochemical uranium anomalies formation in subsurface waters near to Novosibirsk chemical concentrates plant slurry storage

Геохимия ◽

10.31857/s0016-7525646644-650 ◽

2019 ◽

Vol 64 (6) ◽

pp. 644-650

Author(s):

A. V. Safonov ◽

A. E. Boguslavskii ◽

K. A. Boldyrev ◽

L. V. Zayceva

Keyword(s):

Iron Reduction ◽

Sulfate Ions ◽

Microbial Sulfate Reduction ◽

Microbiological Process ◽

Subsurface Waters ◽

Uranium Migration ◽

Oxygen Migration ◽

Polluted Waters ◽

Aerobic And Anaerobic

This article presents data on the possible impact of aerobic and anaerobic microbiological processes in the upper aquifers to uranium migration t sulfate and nitrate polluted waters near to Novosibirsk chemical concentrate plant. Uranium immobilization is possible in local areas, with high content of organic substances and the most important microbiological process is the redox potential reduction due to aerobic respiration. After that in anaerobicс conditions redox-dependent uranium reduction can be expected. Moreover, in the presence of sulfate ions, further anaerobic processes of microbial sulfate reduction and iron reduction lead to the formation of iron sulphide, which plays the significant role of an antioxidant buffer in the case of oxygen migration.

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Inhibition Effect of Fluoride Ion on Corrosion of 304 Stainless Steel in Occluded Cell Corrosion Stage in the Presence of Chloride Ion

Metals ◽

10.3390/met11020350 ◽

2021 ◽

Vol 11 (2) ◽

pp. 350

Author(s):

Zhengwei Luo ◽

Jie Zuo ◽

Hui Jiang ◽

Wenhua Geng ◽

Yongzhang Zhou ◽

...

Keyword(s):

Stainless Steel ◽

Chloride Ion ◽

304 Stainless Steel ◽

Composite Electrodes ◽

Sulfate Ions ◽

Inhibition Effect ◽

Layer Composite ◽

Concentration Of Ions ◽

Corrosion Cell

The role of F− in the corrosion of stainless steel at the stage of occluded cell corrosion in a mixture of chloride, fluoride, and sulfate ions was investigated. A simulated occluded corrosion cell was designed using an elaborate simulated rust layer. Composite electrodes were used to monitor the variation of the concentration of ions, pH, and dissolved oxygen of the occluded solution. The results show that the influence of F− on the corrosion of 304 stainless steel, in the occluded cell corrosion stage, is concentration dependent. When the F−/Cl− ratio is higher than 2, the corrosion can be significantly suppressed. Analyses showed that the corrosion inhibition effect could be attributed to the migration of F− to the occluded cell, which can reduce the migration of Cl−, dampen the decrease in pH, and react with metal ions to form semi-soluble products. Meanwhile, the influence of F− on the corrosion process was also verified using drilled stainless steel specimens, demonstrating the practicality and validity of the simulated occluded cell corrosion model.

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