The Clinch and Powell Rivers (Virginia, USA) support diverse mussel assemblages. Extensive coal mining occurs in both watersheds. In large reaches of both rivers, major ion concentrations are elevated and mussels have been extirpated or are declining. We conducted a laboratory study to assess major ion effects on growth and survival of juvenile Villosa iris. Mussels were exposed to pond water a...

Hence, there is an eigenstate |ψ〉 = A|φ〉 of H with this same energy eigenvalue. We could equally well have begun with the statement that H|ψ〉 = E|ψ〉 and then found a state of H given by |φ〉 = A†|ψ〉 with the same energy. Note that a Hamiltonian of the two given forms will have only non-negative eigenvalues: 〈ψ|A†A|ψ〉 = ∣∣|Aψ〉∣∣2 ≥ 0. Equality holds only if the state is annihilated by A. Analogou...

The authors would like to express their appreciation to the following people who contributed greatly to this project. Dr. Nathaniel Alpert, Ph.D., and associates of the Physics Research Division, Department of Radiology for the computer aspects of radionuclide imaging. Mr. William H. Shea, Jr., and Mr. Ronald J. Callahan of the Division of Nuclear Medicine, Department of Radiology, and the tech...

A Solution-Adaptive Upwind Scheme for Ideal Magnetohydrodynamics Kenneth G. Powell,∗ Philip L. Roe,∗ Timur J. Linde,∗ Tamas I. Gombosi,† and Darren L. De Zeeuw† ∗W. M. Keck Foundation CFD Laboratory, Department of Aerospace Engineering, University of Michigan, Ann Arbor, Michigan 48109-2140; and †Space Physics Research Laboratory, Department of Atmospheric, Oceanic and Space Sciences, Universit...

Visual obstruction as a method to quantify herbaceous biomass in southern African semi-arid savannas Dave Joubert, Larkin A Powell & Walter H Schacht To cite this article: Dave Joubert, Larkin A Powell & Walter H Schacht (2015) Visual obstruction as a method to quantify herbaceous biomass in southern African semi-arid savannas, African Journal of Range & Forage Science, 32:3, 225-230, DOI: 10.2...

A Comparative Study of Habitat Complexity, Neuroanatomy, and Cognitive Behavior in Anolis Lizards by Brian J Powell Department of Biology Duke University Date:_______________________ Approved: ___________________________ Manuel Leal, Supervisor ___________________________ Sabrina Burmeister ___________________________ Cliff Cunningham ___________________________ Sönke Johnsen __________________...

* Wallenberg Neuroscience Center, Department of Physiological Sciences, Division of Neurobiology, Lund University, BMC A11, 221 84, Lund, Sweden † The Psychology Department, University of Hertfordshire, College Lane, Hatfield, Hertfordshire, AL10 9AB, United Kingdom. § Department of Molecular Genetics and Microbiology and Powell Gene Therapy Center, University of Florida, PO Box 100244, Gainesv...