Simultaneous synthesis and fabrication of nano Cu2O on cellulosic fabric using copper sulfate and glucose in alkali media producing safe bio- and photoactive textiles without color change

Cellulose ◽  
2015 ◽  
Vol 22 (6) ◽  
pp. 4049-4064 ◽  
Author(s):  
Majid Montazer ◽  
Mahbubeh Dastjerdi ◽  
Maryam Azdaloo ◽  
Mahnaz Mahmoudi Rad
Keyword(s):  
Copper Sulfate ◽  
Color Change ◽  
Simultaneous Synthesis ◽  
Cellulosic Fabric

scholarly journals Decay Resistance and Color Change of Pine and Beech Wood Impregnated with R. Luteum and R. Ponticum Plant Extracts

2021 ◽  
Vol 72 (4) ◽  
pp. 353-363
Author(s):  
Huseyin Pelit ◽  
Ali Alkan ◽  
Mesut Yalcin
Keyword(s):  
Mass Loss ◽  
Copper Sulfate ◽  
Ferrous Sulfate ◽  
Aluminum Sulfate ◽  
Color Change ◽  
Concentration Level ◽  
Beech Wood ◽  
Decay Resistance ◽  
B Values ◽  
Yellow Color

In this study, the effect of impregnation with natural extracts on decay resistance and color change of pine and beech wood was analyzed. Flowers of Rhododendron luteum and Rhododendron ponticum plants were extracted according to the decoction method and aqueous solutions were prepared at different concentration levels (2 %, 4 % and 7 %). In addition, ferrous sulfate, copper sulfate and aluminum sulfate mordants were added to the solution to improve the properties of the extracts. Then the wood specimens were impregnated with the prepared solutions. The results indicated that the effect of plant species on the mass loss of specimens exposed to T. versicolor (white-rot fungus) was insignificant. Non-mordant extracts had a slight effect on the mass loss of the specimens. However, in pine and beech specimens impregnated with mordant-added (especially ferrous sulfate-added) extracts, mass loss was significantly reduced and resistance to fungal rot was almost completely achieved. The concentration level did not have a significant effect on the mass loss of specimens treated with mordant-added extracts. After impregnation, the L* value of all specimens (especially those treated with ferrous sulfate-added extracts) decreased and the specimens darkened. The a* and b* values increased in specimens treated with non-mordant and aluminum sulfate-added extracts and these specimens tend to have a red-yellow color. The a* value decreased and the b* value increased in wood specimens treated with copper sulfate-added extracts. The green-yellow color trend of these specimens increased. Both the a* and b* values of the specimens treated with ferrous sulfate-added extracts decreased and the green-blue color tendency increased in these specimens. The increase in the concentration level positively affected the determined color changes. The total color change (ΔE*) was higher in wood specimens (especially pine) treated with ferrous sulfate-added R. ponticum extracts.

Color Change Can Be Earliest Sign of Melanoma

2005 ◽  
Vol 38 (22) ◽  
pp. 16
Author(s):  
TIMOTHY F. KIRN
Keyword(s):  
Color Change

Fate and forms of Cu in a reservoir ecosystem following copper sulfate treatment (Saint Germain les Belles, France)

2003 ◽  
Vol 107 ◽  
pp. 1333-1336 ◽  
Author(s):  
E. Van Hullebusch ◽  
P. Chatenet ◽  
V. Deluchat ◽  
P. M. Chazal ◽  
D. Froissard ◽  
...  
Keyword(s):  
Copper Sulfate

Assessment of Color Stability of Treated Leathers with Silicone Oil and Polyethylene Glycol

2014 ◽  
Vol 1 (1) ◽  
pp. 24-34
Author(s):  
Alireza K. ◽  
Hossein Ahmadi ◽  
Mohsen Mohammadi
Keyword(s):  
Ascorbic Acid ◽  
Polyethylene Glycol ◽  
Treatment Process ◽  
Color Change ◽  
Silicone Oil ◽  
Accelerated Aging ◽  
Color Stability ◽  
Antioxidant Additive ◽  
Before And After ◽  
Aesthetic Values

Lubricants and leather dressings are the most common treatments of dry and water logged historical leathers. Color change has a great importance during the time and treatment process, due to visual and aesthetic values of historic leather relics. Polyethylene glycol (PEG) and silicone oil (SiO) are frequently used leather dressings in the conservation procedures. Therefore, color stability of treated leathers with PEG and SiO were investigated before and after heat accelerated aging. Moreover, application of ascorbic acid was evaluated as an antioxidant additive for PEG (PEG+AA).Color change after treatment and aging were studied by colorimetry technique in the CIE *L*a*b system. Results indicated to severe color alteration in PEG treated and aged leathers with or without ascorbic acid. Whereas, SiO treated samples showed better stability and minimum color shift after aging. Silicone oil was characterized as the best dressing for historical leathers with compared to PEG and PEG+AA, due to its high stability and aesthetical properties.

Laser Influence on Dental Sensitivity Compared to Other Light Sources Used During In-office Dental Bleaching: Systematic Review and Meta-analysis

2020 ◽  
Vol 45 (6) ◽  
pp. 589-597
Author(s):  
BGS Casado ◽  
EP Pellizzer ◽  
JR Souto Maior ◽  
CAA Lemos ◽  
BCE Vasconcelos ◽  
...  
Keyword(s):  
Randomized Clinical Trials ◽  
Color Change ◽  
Meta Analysis ◽  
Present Review ◽  
Cochrane Library ◽  
Light Sources ◽  
Eligibility Criteria ◽  
Tooth Color ◽  
Significant Difference ◽  
Meta Analyses

Clinical Relevance The use of laser light during bleaching will not reduce the incidence or severity of sensitivity and will not increase the degree of color change compared with nonlaser light sources. SUMMARY Objective: To evaluate whether the use of laser during in-office bleaching promotes a reduction in dental sensitivity after bleaching compared with other light sources. Methods: The present review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) and is registered with PROSPERO (CDR42018096591). Searches were conducted in the PubMed/Medline, Web of Science, and Cochrane Library databases for relevant articles published up to August 2018. Only randomized clinical trials among adults that compared the use of laser during in-office whitening and other light sources were considered eligible. Results: After analysis of the texts retrieved during the database search, six articles met the eligibility criteria and were selected for the present review. For the outcome dental sensitivity, no significant difference was found favoring any type of light either for intensity (mean difference [MD]: −1.60; confidence interval [CI]: −3.42 to 0.22; p=0.09) or incidence (MD: 1.00; CI: 0.755 to 1.33; p=1.00). Regarding change in tooth color, no significant differences were found between the use of the laser and other light sources (MD: −2.22; CI: −6.36 to 1.93; p=0.29). Conclusions: Within the limitations of the present study, laser exerts no influence on tooth sensitivity compared with other light sources when used during in-office bleaching. The included studies demonstrated that laser use during in-office bleaching may have no influence on tooth color change.

Color change in laser cutting of paper material

2010 ◽  
Author(s):  
Alexander Stepanov ◽  
Heidi Piili ◽  
Antti Salminen
Keyword(s):  
Laser Cutting ◽  
Color Change

Influence of Solvents on the Growth of Copper Sulfate Pentahydrate Single Crystals

2017 ◽  
Vol 13 (3) ◽  
pp. 81-94
Author(s):  
Tariq A. AL- Dhahir ◽  
◽  
Nabeel A. Bakr ◽  
Saja B. Mohammed
Keyword(s):  
Single Crystals ◽  
Copper Sulfate ◽  
Sulfate Pentahydrate ◽  
Copper Sulfate Pentahydrate ◽  
Influence Of Solvents

Characteristics of copper sulfide nanoparticles obtained in the copper sulfate—sodium thiosulfate system

2017 ◽  
Vol 58 (7) ◽  
pp. 1421-1428
Author(s):  
K. S. Murasheva ◽  
◽  
S. V. Saikova ◽  
S. A. Vorobiev ◽  
A. S. Romanchenko ◽  
...  
Keyword(s):  
Copper Sulfate ◽  
Copper Sulfide ◽  
Sodium Thiosulfate
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