Results 1 to 10 of about 1,523,274 (337)

Comparability of calibration strategies for measuring mercury concentrations in gas emission sources and the atmosphere [PDF]

open access: yesAtmospheric Measurement Techniques, 2021
A primary mercury gas standard was developed at Van Swinden Laboratory (VSL) to establish an International System of Units (SI)-traceable reference point for mercury concentrations at emission and background levels in the atmosphere.
I. de Krom   +10 more
doaj   +1 more source

Protective Effect of Alginate Microcapsules with Different Rheological Behavior on Lactiplantibacillus plantarum 299v

open access: yesGels, 2023
Alginate encapsulation is a well-known technique used to protect microorganisms from adverse conditions. However, it is also known that the viscosity of the alginate is dependent on its composition and degree of polymerization and that thermal treatments,
Minerva Aurora Hernández-Gallegos   +6 more
doaj   +1 more source

Natural deep eutectic solvent extraction of xanthorrhizol and curcuminoids from Curcuma xanthorrhiza Roxb and simultaneous determination by high-performance liquid chromatography [PDF]

open access: yesJournal of Pharmacy & Pharmacognosy Research, 2023
Context: Curcuma xanthorrhiza, a native to Indonesia, has been recognized as a potential medicinal plant. Xanthorrhizol (XTZ), curcumin (Cur), bisdemethoxycurcumin (BDMC), and demethoxycurcumin (DMC) are the main major metabolites with different ...
Adelina Simamora   +4 more
doaj   +1 more source

Study on Thixotropy of Mastic Asphalt Binder and Asphalt Mastic

open access: yesBuildings, 2023
In order to analyze the thixotropy of mastic asphalt concrete during the mixing process, the factors affecting the thixotropy of mastic asphalt binder and asphalt mastic are studied, and the measures to shorten the mixing time of mastic asphalt mixture ...
Shunxian Zhang   +3 more
doaj   +1 more source

Experimental Study of the Rheology of Grease by the Example of CIATIM-221 and Identification of Its Behavior Model

open access: yesLubricants, 2023
The study of the rheological properties of a lubricant allows for the assessment of the structure’s durability in which they are used. Computer engineering enables the prediction of the structure performance using refined mathematical models of its ...
Yuriy O. Nosov, Anna A. Kamenskikh
doaj   +1 more source

Rheology of Suspensions of Solid Particles in Liquids Thickened by Starch Nanoparticles

open access: yesColloids and Interfaces, 2023
The rheology of suspensions of solid particles in aqueous matrix liquids thickened by starch nanoparticles (SNP) was investigated. The SNP concentration varied from 9.89 to 34.60 wt% based on the aqueous matrix phase.
Ghazaleh Ghanaatpishehsanaei   +1 more
doaj   +1 more source

Recent Developments in the Viscosity Modeling of Concentrated Monodisperse Emulsions

open access: yesFoods, 2023
Emulsions form a large group of food materials. Many foods are either partly or wholly emulsions or are in the form of emulsion at some stage of the production process.
Rajinder Pal
doaj   +1 more source

Properties of Dicationic Disiloxane Ionic Liquids

open access: yesMolecules, 2020
A number of dicationic ionic liquids with a disiloxane linker between imidazolium cations and bis(trifluoromethylsulfonyl)imide anion were synthesized and characterized. Melting points, viscosity, and volatility in a vacuum were measured; the thermal and
Vladimir G. Krasovskiy   +6 more
doaj   +1 more source

Application of lean Six Sigma to improve the dense medium separation performance at a diamond processing plant in Namibia

open access: yesCogent Engineering, 2023
Lean Six Sigma (LSS) is a rigorous, data-driven, and results-oriented process improvement philosophy. To date, there is no evidence of a study of the application of LSS in a diamond plant.
Abisai Kanyemba   +2 more
doaj   +1 more source

Thermochemical Treatment of Nigerian Raw Clays for Oil and Gas Drilling Operations

open access: yesChemEngineering, 2023
Sodium-based bentonite is used for drilling operations because of its high swelling capacity. This type of bentonite clay is not sourced locally in many oil- and gas-producing nations.
Oghenerume Ogolo   +4 more
doaj   +1 more source

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