Results 121 to 130 of about 42,511 (292)

Fire retardant polyisocyanurate foam [PDF]

open access: yes, 1972
Fire retardant properties of low density polymer foam are increased. Foam has pendant nitrile groups which form thermally-stable heterocyclic structures at temperature below degradation temperature of urethane ...
Parker, J. A., Riccitiello, S. R.
core   +1 more source

Chromium and Cobalt in Used Leather Items: A Danish Market Survey

open access: yesContact Dermatitis, EarlyView.
Used leather items from the Danish second‐hand market frequently release chromium(VI) and, in some cases, cobalt. Some items exceed current EU limits, highlighting a persistent but underrecognised source of exposure in the circular economy that may contribute to ongoing contact allergy despite existing regulations.
Mikkel Bak Jensen   +6 more
wiley   +1 more source

Sustainable dyeing of silk with curled dock (Rumex crispus) extract for trace element removal, ultraviolet protection, antimicrobial and anti‐oxidant activity

open access: yesColoration Technology, EarlyView.
Abstract This study investigated the dyeability and functionality of silk dyed with curled dock leaf extract. The effects of sugar content and turbidity in the extracted dye solution on dyeing were analysed, along with K/S values and colour fastness, under varying temperatures and times.
Youngmi Park
wiley   +1 more source

The plasticisation model of dye diffusion: Part 8

open access: yesColoration Technology, EarlyView.
Abstract Re‐evaluation using the Williams–Landel–Ferry equation, of exhaustion/rate of dyeing/fixation data previously reported for and acid dye, natural dye and two reactive dyes on three different types of silk substrate revealed that thermally activated dye diffusivity is governed by the thermally regulated structural relaxation times of the ...
Stephen M. Burkinshaw
wiley   +1 more source

Powdered hibiscus anthocyanin‐nanofibril complexes as natural colourants: Stability and application in yoghurt and soft candy

open access: yesColoration Technology, EarlyView.
Abstract The instability of anthocyanins limits their application as natural food colorants. This study aimed to enhance the stability of anthocyanins extracted from Hibiscus sabdariffa through copigmentation with protein nanofibrils produced from pea, rice, gluten and whey isolates. Linear and curly nanofibril structures were prepared and incorporated
Vildan Eyiz   +2 more
wiley   +1 more source

Post‐curing effects on mechanical properties staining resistance of a 3D‐printed resin versus a direct composite for definitive restorations

open access: yesEuropean Journal of Oral Sciences, EarlyView.
Abstract This study evaluated the mechanical performance and staining resistance of a three‐dimensional (3D)‐printed resin (VarseoSmile Crown Plus) subjected to different post‐curing times (0, 5, 10, 15, and 20 min), compared with a conventional nanofilled resin composite (Filtek Z350XT).
Bianca Rossi   +6 more
wiley   +1 more source

Effect of in‐office bleaching on the color stability of bulk‐fill resin composites immersed in staining beverages

open access: yesEuropean Journal of Oral Sciences, EarlyView.
Abstract This study evaluated the impact of in‐office bleaching on color stability of bulk‐fill composites submitted to staining. Bulk‐fill (Aura, Opus, and Filtek One) and nanofilled (Filtek Z350) composite specimens were submitted to the following: control (CT); bleaching and immersion in distilled water (BL); and bleaching with daily 15‐min ...
Matheus Kury   +5 more
wiley   +1 more source

Bio sorption of textile dyes from aqueous solution onto three different pine barks: kinetics and isotherm studies

open access: yesRevue des Énergies Renouvelables, 2019
The main objective of the present study is to evaluate the sorption capacities of some natural raw materials of vegetable origin for the treatment of the sewage coming from the textile industry. The selected barks are: maritime pine (MP), pine pinion (PP)
F. Zermane, B. Cheknane, O. Bouras
doaj  

Effect of pH on recovery efficiency and anthocyanin composition of <i>Clitoria ternatea</i> extracts with application as lipid antioxidants in food preservation. [PDF]

open access: yesFood Sci Nutr
pH significantly affects the extraction efficiency of TPC TAC and the extracted anthocyanin components. pH 3 and pH 7 yield the highest extraction efficiency and antioxidant activity. Extracts at pH 7 are suitable as blue color additives for neutral pH foods and as good antioxidants for fat‐containing gummies.
Nguyen KD, Tran TTT, Le NA, Dong TAD.
europepmc   +2 more sources

Statistical Analysis in Art Conservation Research [PDF]

open access: yes, 1988
Evaluates all components of data analysis and shows that statistical methods in conservation are vastly underutilized.
Chandra L. Reedy, Terry J. Reedy
core  

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