Results 1 to 10 of about 133,407 (243)

Influence of powder characteristics on the sintering behaviour of reactive alumina powders [PDF]

open access: yesProcessing and Application of Ceramics, 2022
Fine reactive alumina powders have a significant impact on the properties of refractories at high temperatures. Except for the hydration of cement and in situ reactions, the performance of castables is also correlated with the sintering of reactive ...
Tang Hai, Shi Yingheng, Yuan Wenjie
doaj   +1 more source

Purification of raw palygorskite: a comparative study involving different processes and dispersing agents [PDF]

open access: yesCerâmica, 2021
Palygorskite (Pal) is a natural clay mineral with fibrous morphology and high surface area. Depending on the geological origin, it presents impurities, such as quartz and carbonates, which can harm some of its properties.
G. P. M. de Souza   +4 more
doaj   +1 more source

Development and validation of chemometric-assisted spectrophotometric method for the simultaneous estimation of aceclofenac, paracetamol, and chlorzoxazone with impurities

open access: yesBiomedical and Biotechnology Research Journal, 2022
Background: Analysis of tertiary mixtures of analytes along with their impurities with simple and cost effective manner is always of interest. Utility of chemometric techniques are growing in pharmaceuticals, it improve speediness in the analysis and ...
Rajshree Gunjal   +5 more
doaj   +1 more source

The Challenge of Impurities (Fe, Si) to Recycling in the Rolled Aluminum Industry in the Coming Years in Relation to Their Influence on Ultimate Tensile Strength

open access: yesMetals, 2023
The increased recycling in aluminum production has raised the impurity content in the industry, thus increasing its effect on mechanical characteristics and making it difficult for recycled products to meet the properties’ goals as their effect is not ...
Mateo M. Vicent Fanconi   +2 more
doaj   +1 more source

Nitrosamines in medicinal products [PDF]

open access: yesFarmacja Polska, 2022
Nitrosamines are compounds that have a harmful effect on the organisms of animals and humans. The first information about their teratogenic, mutagenic, and genotoxic effects appeared in the mid-twentieth century.
Katarzyna Dominiak   +2 more
doaj   +1 more source

Occurrence and Regulatory Evaluation of Contaminants in Tattoo Inks

open access: yesCosmetics, 2023
Tattooing has been an enduring form of body art since ancient times, but it carries inherent health risks, primarily due to the complex composition of tattoo inks.
Patricia Fels   +4 more
doaj   +1 more source

The fluctuations of Zn impurity Concentration Profile in KCl crystals growth by various pulling rate Czochralski method [PDF]

open access: yesProgress in Physics of Applied Materials, 2023
Single crystals of KCl(Zn) using different amounts of Zn impurity (0.5 and 1.0 mole percents) with and without rotating crucible were grown by Czochralski method.
Heidar Faripour   +2 more
doaj   +1 more source

Platinum-Based Alloys: Investigation of the Effect of Impurities Content on Creep Rate, Rupture Time and Relative Elongation at High Temperatures [PDF]

open access: yesMaterials Research, 2017
This paper presents the results of research of the effect of impurities content on high-temperature resistance of selected platinum alloys. Alloys of following systems were investigated: Pt-Rh, Pt-Rh-Pd, Pt-Rh-Pd-Ru and Pt-Rh-Pd-Ir-Au.
Biserka Trumić   +4 more
doaj   +2 more sources

The continuous growth of Bulk Si by temperature gradient zone melting method [PDF]

open access: yesArchives of Metallurgy and Materials, 2019
Temperature gradient zone melting (TGZM) method was used to obtain bulk Si continuously for the efficient separation and purification of primary Si from the Si-Al alloy in this work.
Jiayan Li   +4 more
doaj   +1 more source

Comparison of the Nucleation Parameters of Aqueous l-glycine Solutions in the Presence of l-arginine from Induction Time and Metastable-Zone-Width Data

open access: yesCrystals, 2021
Induction time and metastable-zone-width (MSZW) data for aqueous l-glycine solutions in the presence of l-arginine impurity were experimentally measured using a turbidity probe in this study.
Lie-Ding Shiau
doaj   +1 more source

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