We show that the complex PT -symmetric periodic potential V (x) = −(iξ sin 2x+ N)2, where ξ is real and N is a positive integer, is quasi-exactly solvable. For odd values of N ≥ 3, it may lead to exceptional points depending upon the strength of the coupling parameter ξ. The corresponding Schrödinger equation is also shown to go over to the Mathieu equation asymptotically. The limiting value of...

A logical explanation as to why the choice of

Shuying Zhang Faculty Mentor: Yan Zeng Department of Pharmacology Fall 2012 Foremost, I would like to express my sincere gratitude to my advisor Prof. Yan Zeng for the continuous support of my study and growing, for his patience, motivation, enthusiasm, and immense knowledge. His guidance helped me in all the time of research and writing of this report. I could not have imagined having a better...

We investigate the capability of the NLC to indirectly determine both the mass as well as the couplings to leptons and b-quarks of a new neutral gauge boson below direct production threshold. By using data collected at several different values of the collider center of mass energy, we demonstrate how this can be done in an anonymous and model-independent manner. The procedure can be easily exte...

We evaluated whether arterial blood samples for pH and blood gas analysis need to be transported on ice. We found that although the changes in pH, pCO2 and pO2 were greater in samples kept at room temperature versus those kept on ice, the difference was probably not of clinical significance until the period of time after arterial puncture exceeded 20 minutes. We recommend that arterial blood sa...

Contributing Authors: Robert M. Sapolsky, Ph.O., Stanford University, John A. Gunn, Ph.O., Stanford University, Cynthia Fry Gunn Ph.O.,Stanford University, Allan Siegel, Ph.O., New lersey Medicai 5chool, lordan Grafman, Ph.O., Rehabilitation Institute of Chicago, Pamela Blake, M.D., Memorial Hermann Northwest Hospital, Peter K. Hatemi, Ph.O., Pennsylvania State University, Rose McOermott, Ph.O....