Results 11 to 20 of about 7,381 (213)

FORMULATION AND STABILITY OF HEPTAMINOL SUPPOSITORIES [PDF]

open access: yesBulletin of Pharmaceutical Sciences. Assiut University, 1984
The chemical stability of Heptaminol Base and of Heptaminol Hydrochloride was determined after shelf-life storage in an aqueous solution at room temperature. Under these conditions, the Base was found about 10.54 times more stable than the hydrochloride.
S. Ali, M. El-Miligi, A. Kassem
doaj   +1 more source

Suitability of different supported Ru, Pt and Ni catalysts for the hydrogenolysis of sorbitol

open access: yesResults in Engineering, 2022
In this article, the results of sorbitol hydrogenolysis (15% aq. solution), done in an autoclave reactor, over Ru, Pt and Ni loaded on SBA15, carbon coated SBA15 (SBA15C), activated carbon (AcC), Na–Y, Fly Ash (FA) and hydroxyapatite (HAP) catalysts by ...
Thirunavukkarasu Kandasamy   +3 more
doaj   +1 more source

Relationship between Friction Coefficient, Viscosity and Compressibility of Polyethylene Glycol

open access: yesTribology Online, 2008
An ultrasonic liquid processor with the frequency of 20 kHz was used to cleave a principal chain in a polyethylene glycol molecule. The amount of the lubricant molecules cleaved by the ultrasonic disruption was evaluated by the kinematic viscosity ...
Kazuaki Hachiya, Tatsuya Nitta
doaj   +1 more source

Case of Polyethylene Glycol Allergy Confirmed with Basophil Activation Test and Oral Challenge Successfully Immunized with SARS-CoV-2 Vaccine

open access: yesIranian Journal of Allergy, Asthma and Immunology, 2023
Polyethylene glycols (PEG) or macrogols are polymers of ethylene oxide widely used in drugs either as active substances or, more commonly, as excipients.
Maria Pasali   +4 more
doaj   +1 more source

Activity of Alkanediol Alkanoates against Pathogenic Plant Fungi and

open access: yesNatural Product Communications, 2012
Thirty known dialkanoates of ethylene, propylene and diethylene glycols were synthesized by reacting the glycols with acyl chlorides and their structures confirmed by IR, NMR and mass spectral analyses.
Paraj Shukla   +4 more
doaj   +1 more source

Zeta Potential of Nanosilica in 50% Aqueous Ethylene Glycol and in 50% Aqueous Propylene Glycol

open access: yesMolecules, 2023
A sufficient amount of ionic surfactants may induce a zeta potential of silica particles dispersed in water–glycol mixtures of about 100 mV in absolute value.
Marek Kosmulski, Marta Kalbarczyk
doaj   +1 more source

Glycerol Carbonate Solventless Synthesis Using Ethylene Carbonate, Glycerol and a Tunisian Smectite Clay: Activity, Stability and Kinetic Studies

open access: yesApplied Sciences, 2023
Biodiesel is nowadays added in 5–10% v/v to diesel, and its production involves the parallel creation of a vast glycerol amount as a by-product. Despite its many applications, there is a surplus of glycerol (Gly) that has boosted the search for new ...
Yosra Snoussi   +5 more
doaj   +1 more source

Temperature-Responsive Molecular Assemblies Using Oligo(Ethylene Glycol)-Attached Polyamidoamine Dendron Lipids and their Functions as Drug Carriers

open access: yesJournal of Functional Biomaterials, 2020
Temperature-responsive nanocarrier systems using external stimuli are one of the most widely investigated stimuli-responsive strategies because heat is easy and safe to use for hyperthermia and controlled drug delivery.
Takuya Hashimoto   +4 more
doaj   +1 more source

Poly(ethylene glycol)s as grinding additives in the mechanochemical preparation of highly functionalized 3,5-disubstituted hydantoins

open access: yesBeilstein Journal of Organic Chemistry, 2017
The mechanochemical preparation of highly functionalized 3,5-disubstituted hydantoins was investigated in the presence of various poly(ethylene) glycols (PEGs), as safe grinding assisting agents (liquid-assisted grinding, LAG).
Andrea Mascitti   +8 more
doaj   +1 more source

Synthesis and Characterization of New Macrocyclic Polyether-Diester Ligands Containing A 4H-Pyran-4-One Subcyclic Unit [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 1999
New macrocyclic polyether-diester ligands (3-5) containing the 4H-pyran-4-one subcyclic unit have been prepared by treating various glycols with dimethyl chelidonate (10).
Aziz Shahrisa, Reza Tabrizi
doaj  

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