Two turmeric food powders (C1 and C2) were studied for curcuminoid content their effects on the guinea pig intestinal tract in vitro. C1 contained a higher than C2 (5.22% vs 2.31%). increased gallbladder (∼10%) biliary smooth muscle tone (∼15%), without affecting sphincter of Oddi contractility. was more effective lowering ileum (–22% −37%), whereas reverse occurred colon (-50% −20%). Standard ...

Several acrylic acid derivatives incorporating elem ents o f sulfonylurea structure around a central vinylogous core were synthesized and found to be m oderate inhibitors o f the enzyme, acetohydroxyacid synthase (AHAS). Some com pounds showed post-em ergence herbicidal ac­ tivity against m ustard. Biological activity was found to be m arkedly influenced by the nature o f the 2-arylcarbam oyl g...

We study the effects of a high-frequency (HF) signal on the response of a noisy bistable system to a low-frequency subthreshold sinusoidal signal. We show that, by conveniently choosing the ratio of the amplitude of the HF signal to its frequency, stochastic resonance gains greater than unity can be measured at the low-frequency value. Thus, the addition of the HF signal can entail an improveme...