Magnetic Instability in Strongly Correlated Superconductors

Recently a new phenomenological Hamiltonian has been proposed to describe the superconducting cuprates. This so-called Gossamer Hamiltonian is an apt model for a superconductor with strong on-site Coulomb repulsion betweenthe electrons. It is shown that as one approaches half-filling the Gossamer superconductor, and hence the superconducting state, with strong repulsion is unstable toward an antiferromagnetic insulator an can undergo a quantum phase transition to such an insulator if one increases the on-site Coulomb repulsion

Semiconductor Surface Studies

Contains reports on two research projects.Joint Services Electronics Program (Contract DAAB07-76-C-1400)U.S. Navy-Office of Naval Research (Contract N00014-77-C-0132

The structure and excitations of amorphous solids and surfaces

Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1979.MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE.Includes bibliographical references.by Robert B. Laughlin.Ph.D

Enhancing Public Understanding of Water Resources Issues: A Community-Based Short-Course for the Pacific Northwest

A hands on 15-hour community based water quality and monitoring short-course was delivered to citizen groups at six locations in the Pacific Northwest in 2000. The University of Idaho, Washington State University, and Oregon State University Cooperative Extension Systems, USDA-CSREES, and the Idaho Water Resources Research Institute (IWRRI) partnered in design, development, and delivery. This short-course increased participant understanding, awareness of water issues, and improved water-monitoring skills. A 17-module guide and an evaluation model were developed. This learning experience dramatically improved learners\u27 understanding of complex water resource issues and prepared them to plan, monitor, and assess local water issues

Music Appreciation (GSW)

This Grants Collection for Music Appreciation was created under a Round Four ALG Textbook Transformation Grant. Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process. Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials: Linked Syllabus Initial Proposal Final Reporthttps://oer.galileo.usg.edu/arts-collections/1003/thumbnail.jp

A 4-Planet System Orbiting the K0V Star HD 141399

We present precision radial velocity (RV) data sets from Keck-HIRES and from Lick Observatory's new Automated Planet Finder Telescope and Levy Spectrometer on Mt. Hamilton that reveal a multiple-planet system orbiting the nearby, slightly evolved, K-type star HD 141399. Our 91 observations over 10.5 years suggest the presence of four planets with orbital periods of 94.35, 202.08, 1070.35, and 3717.35 days and minimum masses of 0.46, 1.36, 1.22, and 0.69 Jupiter masses respectively. The orbital eccentricities of the three inner planets are small, and the phase curves are well sampled. The inner two planets lie just outside the 2:1 resonance, suggesting that the system may have experienced dissipative evolution during the protoplanetary disk phase. The fourth companion is a Jupiter-like planet with a Jupiter-like orbital period. Its orbital eccentricity is consistent with zero, but more data will be required for an accurate eccentricity determination.Comment: 11 pages, 13 figures, To appear in the Astrophysical Journa

Fabric Parameters and Pesticide Characteristics That Impact on Dermal Exposure of Applicators

Fabric functional finish and formulation of pesticides are factors that contribute to pesticide wicking, wetting, and penetration. Fluorocarbon soil-repellent finishes inhibit contamination of the fabric and of sentinel pads. An undergarment layer offers better protection than does a single layer. Spun-bonded olefin offers protection of the same magnitude as soil-repellent finishes. Methyl parathion residues after laundering were similar for the unfinished fabric, the durable-press finished fabric, and the soil-repellent finished fabric, but the initial contamination of the soil-repellent finished fabric was only 20~ of that of the other two fabrics