Results 51 to 60 of about 19,889 (262)

NUEVA RUTA DE SÍNTESIS DE GLICOLES A PARTIR DE ACEITES VEGETALES INSATURADOS EMPLEANDO CATALIZADORES ÁCIDOS HETEROGÉNEOS NEW SYNTHESIS ROUTE FOR GLYCOLS FROM UNSATURATED VEGETABLE OILS USING HETEROGENEOUS ACIDIC CATALYSTS

open access: yesVitae, 2007
Las estructuras únicas y las características físicas de las grasas proporcionan una amplia gama de aplicaciones; las insaturaciones reactivas de ciertos ácidos grasos se explotan para generar compuestos con mayor diversidad de aplicación (industria ...
Ricardo SUÁREZ M   +2 more
doaj  

Permeation of polyethylene glycols across the tympanic membrane

open access: yesGiant, 2021
Localized and non-invasive delivery of therapeutics across barriers in the body is challenging. Examples include the flux of drugs across the tympanic membrane (TM) for the treatment of middle ear infections, and across the round window to treat inner ...
Wei Zhang   +6 more
doaj   +1 more source

The C‐terminal domain of yeast Arginyltransferase1 is essential for its catalytic activity

open access: yesFEBS Open Bio, EarlyView.
Arginyltransferase 1 (Ate1), a eukaryotic enzyme, catalyses arginylation, transferring arginine from tRNA‐Arg to the amino terminus of the target protein. Overexpression of Ate1 in yeast is lethal and is dependent on arginylation. This study elucidates how mutations in the cofactor‐binding and active site of Ate1 and truncation of its structural ...
Vikas Kumar Yadav   +4 more
wiley   +1 more source

NEW SYNTHESIS ROUTE FOR GLYCOLS FROM UNSATURATED VEGETABLE OILS USING HETEROGENEOUS ACIDIC CATALYSTS

open access: yesVitae, 2009
Unique structures of fats and oils, together with their physical characteristics provide them a large range of applications; the reactive unsaturated fatty acids are commonly used to generate compounds with greater diversity of application ...
Ricardo SUÁREZ   +2 more
doaj  

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

Fluorination: A strategy to tune the interactions of molecules and nanoscale systems with biological matter

open access: yesFEBS Open Bio, EarlyView.
This minireview explores fluorination as a key strategy to optimize therapeutic molecules and nanocarriers. By incorporating different fluorinated motifs—from single atoms to linear and branched chains—drug delivery, cellular uptake, and colloidal stability can be improved and fine‐tuned.
Martina Beccalli   +2 more
wiley   +1 more source

Oxygenated Volatile Organic Compounds (Anti-freezing Agents) in Decorative Water-based Paints Marketed in Nigeria

open access: yesJournal of Health and Pollution, 2018
Background. Consumer products such as paints are a potentially significant source of volatile organic compounds (VOCs) and oxygenated VOCs. Paints for construction and household use have been rapidly changing from oil-based to water-based paints and are ...
Ajoke F. Idayat Apanpa-Qasim   +1 more
doaj   +1 more source

Characteristics of hemolytic activity induced by skin secretions of the frog Kaloula pulchra hainana

open access: yesJournal of Venomous Animals and Toxins including Tropical Diseases, 2013
Background The hemolytic activity of skin secretions obtained by stimulating the frog Kaloula pulchra hainana with diethyl ether was tested using human, cattle, rabbit, and chicken erythrocytes.
Shuangshuang Wei   +6 more
doaj   +1 more source

New AI‐Assisted Approach for Expanding the Solution Space: Application to Lattice Structure Design

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces an innovative framework for designing structured materials by ex panding the design space through reparameterization of qualitative variables into continuous structural descriptors. Combined with machine‐learning‐based prediction and multi‐objective optimization, the approach enables the discovery of novel lattice architectures ...
G. H. Gahimbare   +5 more
wiley   +1 more source

Nanofibers for drug delivery – incorporation and release of model molecules, influence of molecular weight and polymer structure

open access: yesBeilstein Journal of Nanotechnology, 2015
Nanofibers were prepared from polycaprolactone, polylactide and polyvinyl alcohol using NanospiderTM technology. Polyethylene glycols with molecular weights of 2 000, 6 000, 10 000 and 20 000 g/mol, which can be used to moderate the release profile of ...
Jakub Hrib   +6 more
doaj   +1 more source

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