Results 21 to 30 of about 1,331,204 (228)

Synthesis and surface active properties of cationic surface active agents from crude rice bran oil

open access: yesGrasas y Aceites, 1999
Cationic surfactants of 2-hidroxy-3-(2- alkylamidopolyethyl amino) propane-1-triethylammonium hydroxides (ix-xui)a-d were prepared from fatty acids (i)a-d [palmitic, stearic, oleic, linoleic acid] and mixed fatty acids of crude rice bran oil ie [RBO ...
W. I. A. El-Dougdoug
doaj   +1 more source

The study of excipients’ influence on Clopidogrel releasing from the rectal suppositories

open access: yesAktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2018
Such cardiovascular pathologies as ischemic disease of heart and brain, occlusive diseases of peripheral arteries are the most frequent causes of morbidity, mortality and disability of population in the world.
Ye. А. Redkina   +3 more
doaj   +1 more source

Intensifying the cement grinding process [PDF]

open access: yesE3S Web of Conferences, 2023
This article deals with the intensification of the grinding process in ball mills. Attention is drawn to the need to reduce the energy input for grinding.
Mukhamedbaeva Mas’uda   +2 more
doaj   +1 more source

Dynamic behavior of molten pool flow field for active laser welded-thick stainless steel plates

open access: yesMaterials Research Express, 2021
By combining numerical simulation and experimental investigation, this paper intensively investigated the influence rules of adding three active agents (SiO _2 , TiO _2 and NaF) on the dynamic behaviors of flow field in the laser welding 304 stainless ...
L-F Mei   +5 more
doaj   +1 more source

Studying Transmembrane Pressure, pH and Anionic Surfactant (SDS) Concentration Effects on MEUF Process Performance in Dairy Waste Water Treatment Using Response Surface Methodology Design [PDF]

open access: yesPizhūhish va Nuāvarī dar ̒Ulūm va Sanāyi̒-i Ghaz̠āyī, 2019
Surfactants are widely used to improve membrane processes due to their ability to trap toxic, organic compounds and heavy metals in industrial wastewater treatment.
Ali Arasteh Nodeh   +2 more
doaj   +1 more source

Synthesis and evaluation of some surface active agents from long chain fatty amine

open access: yesGrasas y Aceites, 2007
This study continues our series of synthesis of surface active agents containing heterocyclic moiety. NHeptadecanoyl- 3-(4-oxo-4H-benzo[d][1,3]oxazin-2-yl)- acrylamide (4) was used as a new starting material to synthesize propenoxylated nonionic surface ...
A. M. F. Eissa
doaj   +1 more source

Active Agents Incorporated in Polymeric Substrates to Enhance Antibacterial and Antioxidant Properties in Food Packaging Applications

open access: yesMacromol, 2022
Active packaging has played a significant role in consumers’ health and green environment over the years. Synthetic polymers, such as poly(ethylene terephthalate) (PET), polyethylene (PE), polypropylene (PP), polystyrene, poly(vinyl chloride) (PVC ...
Johan Stanley   +5 more
doaj   +1 more source

New heterocycles having double characters; as antimicrobial and surface active agents.

open access: yesGrasas y Aceites, 2004
Fatty acids isothiocyanate (1) was used as a starting material to synthesize some important heterocycles such as triazoles, oxazoles, thiazoles, benzoxazoles and quinazolines by treating with different types of nucleophiles such as nitrogen nucleophiles,
M. S. Amine   +4 more
doaj   +1 more source

Selected anionic and cationic surface active agents: case study on the Kłodnica sediments

open access: yesLimnological Review, 2017
Surface active agents (surfactants) are a group of chemical compounds, which are used as ingredients of detergents, cleaning products, cosmetics and functional products.
Olkowska Ewa   +3 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

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