0 We tested predictions about how the e}ect of vegetation and litter on seedling establishment varies among sites and herbaceous community types "sand barrens\ prairies\ fens#[ For both vegetation and litter\ we also separated direct interactions from indirect interactions and interaction modi_cations along the gradient[ 1 Although the intensity of the e}ects varied across sites\ the direct e}e...

Weldments inevitably shrink during cooling from the melt pool. Residual stresses then occur owing to surrounding constraints. Tensile residual in weldments cause various problems, such as deformation and reduction of fatigue strength. Low-temperature transformation (LTT) welding consumables can reduce tensile stress through volume expansion, which accompanies a phase austenite martensite. In th...

Several studies have shown that activation of alpha(2)-adrenergic receptors (alpha(2)ARs) leads to mild analgesic effects. Tricyclic antidepressants (TCAs), such as desipramine (DMI), which block norepinephrine transporters (NETs), also produce mild antinociception. The coadministration of either alpha(2)AR agonists or TCAs with opiates produces synergistically potentiated antinociception. It h...

the influence of salinity on the different polyamine fractions (free, conjugated, and bound) was compared in a natrophilic halophyte (beta vulgaris l. cv. ic) and a salt sensitive glycophyte (nicotiana rustica l. cv. basmas). low-level salinity (25 mm nacl) and high salinity (150 and 50 mm nacl for sugar beet and tobacco, respectively) were supplied in hydroponics. under low salinity shoot dry ...

there is limited knowledge about physiological and biochemical functions of bread wheat and durum wheat genotypes in response to drought stress. to study differences of drought-sensitive bread and durum wheat genotypes to drought stress, this study was conducted under two different irrigation regimes (well-watered and water-stressed treatments) under glasshouse conditions. the experiment was co...