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 ...

In this study, we isolated scopoletin from Cirsium setidens Nakai (Compositae) and tested its effects on melanogenesis. Scopoletin was not toxic to cells at concentrations less than 50 µM and increased melanin synthesis in a dose-dependent manner. As melanin synthesis increased, scopoletin stimulated the total tyrosinase activity, the rate-limiting enzyme of melanogenesis. In a cell-free system...

The majority of herbivorous insects are specialized feeders restricted to a plant family, genus, or species. The evolution of specialized insect-plant interactions is generally considered to be a result of trade-offs in fitness between possible hosts. Through the course of natural selection, host plants that maximize insect fitness should result in optimal, specialized, insect-plant association...

Rhinocyllus conicus, a weevil introduced for biological control of exotic weeds, has had major nontarget ecological effects on native thistles. Some practitioners have argued that this is an isolated case. We report, however, that another Eurasian weevil (Larinus planus), currently being distributed in North America for the control of Canada thistle (Cirsium arvense), is significantly reducing ...

by the Greeks, the ' word akantha meaning thorn, thistle, or spine. Of some of the stylized ornaments it is rather . difficult to say whether they were fashioned after one of the thistles, the Acanthus spi: nosus and mollis, or were just imaginary designs. Many thistle-like ; plants, for instance cer? : tain species of silybum, carduus, and cirsium, The Acanthus spino, were known to grow of Dio...