Physical Properties Of Antiferromagnetic Single Crystal Gdin3

A sample of GdIn3 was obtained via the metallic flux technique and its structural, magnetic, and thermodynamic properties were studied. X-ray diffraction (XRD) measurements realized at room temperature were performed in order to verify whether the desired crystalline phase had been obtained. The experimental results show that single crystals were grown successfully by the employed growth technique. The magnetic characterization was carried out through magnetic susceptibility data as a function of temperature (2 <= x <= 300 K) and magnetic field (-7 <= H <= 7 T). The specific heat was measured using a commercial small mass calorimeter that employed the thermal relaxation technique in the temperature range of 2-200 K. (C) 2016 Elsevier B.V. All rights reserved.17591

Composition and antioxidant and antifungal activities of the essential oil from Lippia gracilis Schauer

In this study, the oil constituents of Lippia gracilis were identified by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The antioxidant and antifungal activities were also evaluated. The leaf oil showed a yield of 3.7% and its main constituents were thymol (70.3%), p-cymene (9.2%), thymol methyl ether (5.4%) and p-methoxythymol (2.7%). The thin stem oil showed a yield of 0.4% and its major components were thymol (70.1%), thymol methyl ether (4.4%), p-methoxythymol (4.0%), p-cymene (3.8%), α-humulene (2.4%) and (E)-caryophyllene (2.1%). The aromatic monoterpenes found in the oils showed an average of 88%. The scavenging activity of the 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) for the leaf oil, expressed as half maximal effective concentration (EC50), was 35.7±3.3 µg/ml, indicating high antioxidant activity. The evaluation of fungicide activity for the leaf oil, using direct bioautography, showed also a significant value for lethal concentration (LC50 5.0 μg/ml) against Cladosporium sphaerospermum and C. cladosporioides fungi. Keywords: Essential oil composition, thymol and carvacrol, DPPH radical scavenging and bioautographyAfrican Journal of Biotechnology, Vol 13(30) 3107-311