The aggregation behaviour of tobacco mosaic virus (TMV) protein vulgare was compared to that of two mutants, A 14 and Ni725, with amino acid exchanges localized in the coat protein at posi­ tions 107 (Thr -*• Met, in Ni725) and 129 (lie -> Thr, in both mutants). This behaviour, as meas­ ured by sedimentation, hydrogen ion titration, light-scattering, and near-UV absorption difference and circul...

Canada thistle remains the most common and troublesome weed of pastures, roadsides and other areas of low-maintenance sods. Even though numerous herbicides have excellent activity on Canada thistle, the extensive root system of this species complicates longterm management. This paper will discuss recent research conducted in Alberta, Canada investigating the role of pasture fertilization in Can...

Intraplate volcanism initiated shortly after the cessation of Cenozoic seafloor spreading in the South China Sea (SCS) region, but the full extent of its influence on the Indochina block has not been well constrained. Here we present major and trace element data and Sr-Nd-Pb-Hf isotope ratios of late Cenozoic basaltic lavas from the Khorat plateau and some volcanic centers in the Paleozoic Sukh...

Far-field weak scattering theory is applied to the case of high-frequency broad-bandwidth acoustic scattering from a thermally generated buoyant plume in a controlled laboratory environment. To first order, the dominant scattering mechanism is thermally driven sound-speed variations that are related to temperature deviations from ambient. As a result, the received complex acoustic scattering is...

Die Möglichkeit einer Differenzierung zwischen dikotylen (Betula vulgaris, Galium aperine, Cirsium arvensis, Stellaria media, Viola arvensis) und monokotylen (Triticum aestivum, Poa annua, Apera spica-venti, Alopecurus myosuroides) Pflanzenarten anhand ihrer LIF-Parameter von der Blattoberund Unterseite wurde geprüft. Diskriminanzanalyse anhand von Fluoreszenzmessungen der Blattoberseite ergab ...

High-valued medicinal plants Achillea millefolium, Acorus calamus, Arnebia nobilis, Fumaria indica, Gymnema sylvestre, Origanum vulgare, Paeonia emodi, Peganum harmala, Psoralea corylifolia, Rauwolfia serpentina, and Vetiveria zizanioides were identified with the help of taxonomical markers and investigated for characterization and palynological studies. These parameters are used to analyze the...

The antifungal activity and the chemical composition of essential oils (EOs) from some Mediterranean autochthonous plants were investigated against Malassezia pachydermatis, a fastidious opportunistic yeast usually involved in canine external otitis. Minimum inhibitory concentrations (MICs) of Anthemis nobilis, Citrus limon, Citrus paradisi, Illicium verum, Lavandula hybrida, Mentha piperita, O...