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Effect of the activating agent on physico-chemical and electrical properties of activated carbon cloths developed from a novel cellulosic precursor
(Elsevier Science, 2011-03)
Different chemical reagents (phosphoric acid, boric acid, ammonium citrate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate and trisodium phosphate) were employed to develop activated ...
Antioxidant Activity and Chemical Composition of Essential Oil from Atriplex undulata
(Natural Products, 2010-09)
The essential oil from aerial parts (stems and leaves) of Atriplex undulata (Moq) D. Dietr. (Chenopodiaceae) has been studied for it in vitro antioxidant activity. The chemical composition of the oil obtained by hydrodistillation ...
Head Louse Feces: Chemical Analysis and Behavioral Activity
(Entomological Society of America, 2020-02)
Human head lice Pediculus humanus capitis (De Geer) (Phthiraptera: Pediculidae) are insect parasites closely associated with humans, feeding on the blood of their hosts and causing them skin irritation and probable secondary ...
Some chemical composition and biological activity of northern Argentine propolis
(American Chemical Society, 2005-02)
Twenty-five samples of propolis were collected from seven different regions in northern Argentina; ethanolic extracts of propolis were prepared from all samples, and the respective samples were examined for UV absorption ...
Improvement in poly(ɛ-caprolactone) bio-activity: Structural characterization and in vitro assessment
(Taylor & Francis As, 2019-01-07)
Model PCL homopolymers (anionic polymerization) were synthetized and chemically functionalized with anhydrides to improve their bio-activity. Modified polyesters were used to fabricate highly porous PCL membranes by leaching ...
Studies on essential oils. Part 35: chemical and biocidal investigations on Tagetes erecta leaf volatile oil
(John Wiley & Sons Ltd, 2003-04)
Chemical investigations on the leaf essential oil of Tagetes erecta, performed by HPLC, GC and GC–MS techniques, showed the presence of 26 components, accounting for 89% of the total oil. The major constituents were ...
The American Chemical Society and its Activities in Latin America
(Pontificia Universidad Católica del Perú, 2004)
Chemical structure and antiviral activity of carrageenans from Meristiella gelidium against herpes simplex and dengue virus
(Elsevier, 2006-03)
Chemical and spectroscopic methods showed that the major KCl-precipitated galactans from Meristiella gelidium (Solieriaceae) are iota/kappa/nu-hybrid carrageenans with the former one in higher proportion. These carrageenans ...
Chemical characterization and biological activities of Tessaria absinthiodes (Hook. & Arn.) dc. (Asteraceae) decoction
(Sociedad de Biología de Cuyo, 2019)
The decoction of Tessaria absinthioides is used in traditional medicine of South America as a hypocholesterolemic, balsamic, and expectorant, it is also useful for the prevention of hepatitis, renal insufficiency, diabetes ...
Sulfated xylomannans from the red seaweed Sebdenia polydactyla: Structural features, chemical modification and antiviral activity
(International Medical Press, 2009-04)
Background: Many viruses display affinity for cell surface heparan sulfate proteoglycans with biological relevance in virus entry. This raises the possibility of the application of sulfated polysaccharides in antiviral ...