Time filter

Source Type

Beenakumari K.S.,The Saints
Journal of Industrial Pollution Control | Year: 2013

The inhibitive effect of the Saraca indica (Asoka) leaf extract on the corrosion of mild steel in potable water was investigated by using weight loss, open circuit potential measurements and potentiostatic polarization techniques. The threshold concentration of the inhibitor was found to be 500 ppm. At stagnant condition, this concentration of inhibitor shows an inhibition efficiency of 92.4%. The inhibitor was suitable for protecting the mild steel under stimulated conditions also. The corrosion rate was measured at different intervals of immersion of mild steel sample in electrolyte to understand the mechanism of inhibition. The organic part of the leaf extract adsorbed on the surface of the metal and makes a complex on the surface of the metal. This layer will adhere firmly on the metal surface and not depleted with time, temperature and turbulence conditions. © EM International. Source

Collins T.,The Saints | Wallman J.,City College of New York
Journal of Neurophysiology | Year: 2012

When saccades systematically miss their visual target, their amplitude adjusts, causing the position errors to be progressively reduced. Conventionally, this adaptation is viewed as driven by retinal error (the distance between primary saccade endpoint and visual target). Recent work suggests that the oculomotor system is informed about where the eye lands; thus not all "retinal error" is unexpected. The present study compared two error signals that may drive saccade adaptation: retinal error and prediction error (the difference between predicted and actual postsaccadic images). Subjects made saccades to a visual target in two successive sessions. In the first session, the target was extinguished during saccade execution if the amplitude was smaller (or, in other experiments, greater) than the running median, thereby modifying the average retinal error subjects experienced without moving the target during the saccade as in conventional adaptation paradigms. In the second session, targets were extinguished at the start of saccades and turned back on at a position that reproduced the trial-by-trial retinal error recorded in the first session. Despite the retinal error in the first and second sessions having been identical, adaptation was several fold greater in the second session, when the predicted target position had been changed. These results argue that the eye knows where it lands and where it expects the target to be, and that deviations from this prediction drive saccade adaptation more strongly than retinal error alone. © 2012 the American Physiological Society. Source

Galbis-Reig D.,The Saints
Wisconsin Medical Journal | Year: 2016

Kratom, a relatively unknown herb among physicians in the western world, is advertised on the Internet as an alternative to opioid analgesics, as a potential treatment for opioid withdrawal and as a “legal high” with minimal addiction potential. This report describes a case of kratom addiction in a 37-year-old woman with a severe opioid-like withdrawal syndrome that was managed successfully with symptom-triggered clonidine therapy and scheduled hydroxyzine. A review of other case reports of kratom toxicity, the herb’s addiction potential, and the kratom withdrawal syndrome is discussed. Physicians in the United States should be aware of the growing availability and abuse of kratom and the herb’s potential adverse health effects, with particular attention to kratom’s toxicity, addictive potential, and associated withdrawal syndrome. © 2016 Wisconsin Medical Society. Source

It is often taken for granted that, in a large majority of typical persons, hand preference and hemispheric specialization for language are interrelated. In this article, I argue that there is currently little serious evidence to support this view. I contend that the best way to investigate the true relationship between hand preference and language lateralization would be to look at their codevelopment. Since both hand preference and language asymmetries are expressed very early, even before birth, a systematic comparison of the very early development of both behavioral traits is needed to understand this relationship. At present, such data are clearly lacking. I discuss existing data on the development of hand preference and language asymmetry, and on the relations between the two. I conclude that this evidence favors the view that the two asymmetries develop relatively independently. © 2013 Wiley Periodicals, Inc. Source

Mejia-Gervacio S.,The Saints
Journal of Physiology | Year: 2012

A cholinergic synaptic input has been highlighted in recent years as an important modulator of motoneuron excitability. In the present study, it was examined whether, as in other regions, the cholinergic inputs on spinal motoneurons modulate the glutamatergic synaptic activity, evoked by electrical stimulation at the dorsolateral funiculus. The present results show that the pharmacological stimulation of muscarinic receptors produces a selective depression of AMPA-mediated glutamatergic activity in thoracic and lumbar spinal motoneurons. This effect does not involve a change in transmitter release and occurs both on synaptic currents and on AMPA responses evoked by photolysis of MNI-glutamate. Thus, it is concluded that muscarinic modulation occurs at the postsynaptic level. The results suggest that cholinergic inputs contacting motoneurons, which are known to increase motoneuron excitability, also directly interfere with incoming synaptic inputs by changing their amplitudes. © 2012 The Author. The Journal of Physiology © 2012 The Physiological Society. Source

Discover hidden collaborations