OBJECTIVE To examine the historical evidence that the thyroidectomy performed on operatic soprano Amelita Galli-Curci was responsible for the abrupt termination of her career. SUMMARY BACKGROUND DATA The superior laryngeal branch of the vagus nerve may be injured during thyroidectomy, producing vocal defects more subtle than those found after recurrent nerve injury. It is widely believed that...

The phytotoxic potential of plants and the effect their active components on another plant species is being explored as a alternative to synthetic herbicides for weed control. In current study, we investigated leaves Dregea volubilis (L.f.) Benth. ex Hook.f. against four test [timothy (Phleum pratense L.), barnyard grass (Echinochloa crus-galli (L.) P. Beauv), lettuce (Lactuca sativa alfalfa (M...

Glyamifop (R&D code: FG001), (R)-(2-(4-(6-chlorobenzoxazol-2-oxy) phenoxy) propionyl) glycine ethyl ester is a newly developed aryloxyphenoxypropionate (HRAC Group 1) herbicide for weed control in paddy fields. This work determined the effect of on weeds and its safety rice glasshouse. controlled common gramineous fields at 100 g a.i. ha−1: fresh weight inhibition rates Echinochloa crus-gal...

in order to indicate the effect of duck's presence, anas platyrhynchos in paddy fields on rice (oryza sativa l.) yield, yield components and its effect on weed density, an experiment was carried out in baz ghaleh dezh village, located in sangar, guilan, iran in 2013. this experiment was performed based on factorial split-plot analysis conducted in a randomized complete block design (rcbd)....

Responses of barnyardgrass (Echinochloa crus-galli var. crux-galli) to water drained, saturated, or flooded soils were assessed in relation to the aerenchyma formation in crown roots. Plant height, fresh weight of shoots, the number of crown roots, and the fresh weight of roots of 4-week-old barnyardgrass increased in the following order: saturated>drained>flooded. By contrast, aerenchyma was r...

The enzyme, aryl acylamidase, was characterized in propanil-susceptible and propanil-resistant barnyardgrass with respect to kinetic parameters, the effects of inhibitors, and the levels of activity in darkand light-grown tissues. The enzyme reaction in the resistant tissue preparation proceeded linearly with time over a 5 h time course, while activity in the susceptible tissue preparation was ...