UNLABELLED Although widely used in air quality regulatory frameworks, the term "volatile organic compound" (VOC) is poorly defined. Numerous standardized tests are currently used in regulations to determine VOC content (and thus volatility), but in many cases the tests do not agree with each other, nor do they always accurately represent actual evaporation rates under ambient conditions. The pa...

Verticillium wilt is a serious disease of pistachio caused by Verticilliumdahliae. Control of the disease is difficult due to soil borne nature of the causal agent. Verticillium wilt has been biologically controlled by Trichoderma spp. In the present study, Trichoderma spp. was isolated from soils of pistachio orchards and their effect was investigated on radial growth of Verticillium dahliae b...

the biological activity and composition of the essential oil of sclerorhachis leptoclada rech. an endemic species from northeast of iran was studied. the essential oil was isolated from the aerial flowering parts of the plant and analyzed by gc and gc-ms. fifty-four compounds accounting for 95.9% of the total oil were characterized. the main constituents were (e)-nerolidol (14.5%), terpinen-4-o...

background development of antibiotic resistance among pathogenic bacteria motivates the researchers to search for newer antimicrobial agents. objectives in the present study, antibacterial effects of cuminum cyminum linn. essential oil against multidrug resistant (mdr) escherichia coli strains isolated from urinary tract infections were studied, using microdilution method. materials and methods...

Multi Tunnel Junctions (MTJs) have attracted much attention recently in the fields of Single-Electron Devices (SED) in particular Single-Electron Memory (SEM). In this paper, we have design and study a nano-device structure using a two dimensional array MTJs for Volatile and Non-Volatile-SEM, in order to analyze the impact of physical parameters on the performances. We investigate the single-el...

The Moon is depleted in volatile elements relative to the Earth and Mars. Low abundances of volatile elements, fractionated stable isotope ratios of S, Cl, K and Zn, high μ ((238)U/(204)Pb) and long-term Rb/Sr depletion are distinguishing features of the Moon, relative to the Earth. These geochemical characteristics indicate both inheritance of volatile-depleted materials that formed the Moon a...

background: herbal essential oils (eos) are natural, volatile, and complex compounds that are defined by a strong odor. this study was conducted to investigate and compare antioxidant and antifungal properties of eo extracted from flowers and leaves of origanum vulgare ssp. gracile from iran. methods: eos of leaves and flowers of o. vulgare ssp. gracile were extracted using a modified clevenger...

background: this study aimed at investigation of the chemical composition, antimicrobial activity, and antioxidant properties of clove, cumin, origanum, and anise essential oils (eos). methods: chemical compositions of the eos were identified using gas chromatography/mass spectrometry (gc/ms). the antibacterial activities of eos against four important food-borne bacteria were assessed by disc d...

the volatile constituents of aerial parts of euphorbia aellenii rech.f. and e. microsciadea boiss. were analyzed by gas chromatography (gc) and gc-mass spectrometry (ms) methods. the main volatile constituents of e. aellenii were phytol isomer (47.3%), camphene (31.9%) and caryophyllene oxide (20.6%), while the major volatile components of e. microsciadea were trans-anethole (74.5%), limonene (...