record of the course of molecular dynamics in a single measurement would be invaluable. In this context, the article by Poulin and Nelson represents a valuable advance. The authors show how one can obtain— in a single shot—time-sequenced transient absorption spectra of irreversible chemical reactions that are initiated with a laser in a solid sample. To do so they use echelons, which are window...

Dimensional control of the work-piece in steel industry is of important interest. The main aspects in overcoming the thickness control are variations in material strength due to variations in chemical composition, work-piece temperature, reduction and the strain rate applied to the work-piece. In this paper based on the main parameters affecting the rolling force an attempt been made to give a ...

how to cite this article: bilan n, ganji sh. comparison of cpap with humidifie, blender, and t-piece on the outcome of weaning in patients with neurological disorders. iran j child neurol. spring 2015;9(2):42-45.   abstract objective  the procedure for weaning from mechanical ventilation in many patients is a difficult and long process and increases the time of mechanical ventilation. there are...

background: photon attenuation as an inevitable physical phenomenon influences on the diagnostic information of spect images and results to errors in accuracy of quantitative measurements. this can be corrected via different physical or mathematical approaches. as the correction equation in mathematical approaches is nonlinear, in this study a new method of linearization called ‘piece wise line...