This paper presents a new application of the normal mode decomposition to measure the reflection and absorption coefficients of a low growing living plant in a large 300 300 mm impedance tube. In this way the higher frequency limit can be extended by a factor of 3 in comparison to that suggested by the standard ISO 10534-2 method for this type of an impedance tube. The adopted method (Prisutova...

Commercial vegetative propagation of oricultural crops requires the segregation of plant cuttings into categories based on size. The cuttings however must be graded when they are planted ("stuck"), at which time the grade of a cutting is not easy to determine. This paper reports on a system that learns to classify cuttings from being shown examples of images of cuttings that have been graded by...

We evaluated the efficacy of commercial antimosquito products in field trials in Illinois in June 1998 by comparing mosquito landing rates. Products tested were a sonic mosquito repeller, an insect killing grid using ultraviolet light and 1-octen-3-ol as lures, mosquito smoke coils containing a pyrethroid, citronella candles, the mosquito plant Pelargonium citrosum, and a N,N-diethyl-3-methylbe...

The evaluation of 10 essential oils of geranium, Pelargonium graveolens (Geraniaceae), were all shown to have repellent activity against nymphs of the medically important lone star tick, Amblyomma americanum (L.). The biological tests were carried out using a vertical filter paper bioassay, where ticks must cross an area of the paper treated with repellent to approach host stimuli. One of the e...

Medicinal plants are the wealthy source of antibacterial agents and curatives. There is an urgent need for new antimicrobial agents, so the antimicrobial activity for Ruta graveolens L. and Ficus carica Linn. Crude extracts were evaluated for its inhibitory activity against some disease causing selected microorganisms. Root extract of Ruta graveolens L gave 8 and 7 mm inhibition zone against Es...

Pelargonium graveolens (Geranium) is a source of the finest quality fragrance and its essential oils are used as antibacterial, antifungal agents. The aim current research to determine chemical constituents in oil P. by GC-MS evaluate antidiabetic activity via α-glucosidase inhibition assay. composition was determined GC/MS assessed through enzyme in-vitro models. analysis determines 36 compone...

Ruta graveolens L. is an herbal plant which is traditionally used as an energizer and an anti-bleeding to heal injuries. Regarding increasing prevalence of mycotoxins and inefficiency of methods used to decrease them, it is possible to use plants metabolites to decrease mycotoxins. The antifungal effect of Ruta graveolens on Aspergillus flavus and Penicillium sp. in vitro by disk and well diffu...