The composition of the essential oil hydrodistilled from the aerial parts of 18 individual Artemisia herba-alba Asso. plants collected in southern Tunisia was determined by GC and GCMS analysis. The oil yield varied between 0.68% v/w and 1.93% v/w. One hundred components were identified, 21 of of which are reported for the first time in Artemisia herba-alba oil. The oil contained 10 components ...

In this study, solid phase micro-extraction (SPME) was optimized to improve the sensitivity and accuracy in formaldehyde determination for plywood panels. Further work has been carried out to compare the newly developed technique with existing method which reacts formaldehyde collected in desiccators with acetyl acetone reagent (DC-AA). In SPME, formaldehyde was first derivatized with O-(2,3,4,...

Seeds of cumin (Cuminum cyminum L.) are widely used as a spice for their distinctive aroma. C. have been in traditional medicine to treat variety diseases. Literature presents ample evidence biomedical activities which is attributed its bioactive secondary metabolites - terpenes, phenols, and flavonoids. Besides, health effects seeds experimentally validated through phytochemical analysis depic...

The nonlinearity and arousal hypothesis predicts that highly aroused mammals will produce nonlinear, noisy vocalizations. We tested this prediction by measuring faecal glucocorticoid metabolites (GCMs) in adult yellow-bellied marmots (Marmota flaviventris), and asking if variation in GCMs was positively correlated with Wiener entropy-a measure of noise. Contrary to our prediction, we found a si...

Phytophthora cactorum is a plant pathogen affecting wide range of hosts, causing economically damaging diseases, such as damping off and root rot, in fields nurseries. Current protection strategies are often inadequate to control diseases. Hence, an attempt was made evaluate the potential novel method using lignin nanoparticles loaded with essential oil Thymus serpyllum (EO-LNPs) for controllin...

The simulation of major midwinter stratospheric sudden warmings (SSWs) in six stratosphere-resolving general circulation models (GCMs) is examined. The GCMs are compared to a new climatology of SSWs, based on the dynamical characteristics of the events. First, the number, type, and temporal distribution of SSW events are evaluated. Most of the models show a lower frequency of SSW events than th...

Background: Natural substances that were initially obtained from plants once regarded as a beneficial source of possible medicinal agents and recognized crucial in the development human diseases. The current study sought to determine whether hydroalcoholic extracts Garcinia cambogia plant fruits included any bioactive substances. Materials Methods: collected, shade-dried, ground into fine powde...

Significant declines in spring Northern Hemisphere (NH) snow cover extent (SCE) have been observed over the last five decades. As one step toward understanding the causes of this decline, an optimal fingerprinting technique is used to look for consistency in the temporal pattern of spring NH SCE between observations and simulations from 15 global climate models (GCMs) that form part of phase 5 ...