The decline and fall of Brazil's Cruzado

Includes bibliographical reference

Cost-Benefit Analysis of Climate Change: Stern Revisited

This paper explores the challenges facing orthodox economic approaches to assessing climate control as if it were appraisal of an investment project. Serious flaws are noted in the work of economists with especial attention to the UK Government report by Stern and colleagues. The opinions expressed in this paper are those of the authors and may not be taken to reflect the views CSIRO or the Australian Government.enhanced greenhouse effect, global CBA, Stern Report

Gas separation membrane

A method of fabricating a gas separation membrane includes providing a coextruded multilayer film that includes a first polymer layer formed of a first polymer material and a second polymer layer formed of a second polymer material, the first polymer material having a first gas permeability. The coextruded multilayer film is axially oriented such that the second polymer layer has a second gas permeability that is greater than the first gas permeability.Board of Regents, University of Texas Syste

Ten-Year Performance of a Ponderosa Pine Provenance Study in Eastern South Dakota

To identify sources of ponderosa pine which are best adapted to the climate of eastern South Dakota, a study having 73 seed sources or provenances was established in 1968. The study was set up as a part of a north central regional project, and the trees were planted at the Big Sioux conifer Nursery at Watertown, South Dakota. Data on survival and height after the fifth and tenth growing seasons were collected. A severe storm in early November 1977 provided an excellent opportunity to evaluate the sources for susceptibility to winter injury. Information on an attack in 1975 by Petrova metallica, pitch twig moth, was also recorded

Liquid Metal Jetting for Printing Metal Parts

Liquid Metal Jetting (LMJ) is solid freeform fabrication process for producing metal mechanical parts and electronic interconnects. It is a technology similar to ink jet printing where individual molten droplets are accurately printed. LMJ will produce metal parts on demand from a CAD database with functional performance parameters similar to metal parts produced by machining or casting. By controlling solidification rates and metal alloy composition, LMJ is able to produce parts with unique properties such as metal matrices and functionally graded materials. This paper will review the current status of LMJ and future applications for this technology.Mechanical Engineerin

When The One You Love Loves You

With ukulele accompaniment. Contains advertisements and/or short musical examples of pieces being sold by publisher.https://digitalcommons.library.umaine.edu/mmb-vp/6851/thumbnail.jp

Harriet

Photograph of Gene Krupa; Illustration of woman on horse swinging lassohttps://scholarsjunction.msstate.edu/cht-sheet-music/12594/thumbnail.jp

No influence of CO2 on stable isotope analyses of soil waters with OA-ICOS

Acknowledgements We are thankful for the support by Audrey Innes with the stable isotope, LOI, and GWC analysis. We thank Jonathan Dick for suggesting that we use sparkling water to generate different CO2 concentrations in the headspace and Claire Tunaley for proof reading. We further highly appreciate the help of David Galloway and Michael Mcgibbon from the School of Biological Sciences, University of Aberdeen, with the CO2 analysis. We are also thankful for the support by Robert Provencal and Doug S. Baer regarding the technical aspects of the isotope analyzer. We would also like to thank the European Research Council (ERC, Project No. GA 335910 VeWa) and the Natural Environment Research Council (NERC, Project No. NE/K000268/1) for funding. We thank three anonymous reviewers for their valuable feedback that helped to improve the manuscript.Peer reviewedPublisher PD

Neutralino Relic Density in a Supersymmetric U(1)' Model

We study properties of the lightest neutralino (\chi) and calculate its cosmological relic density in a supersymmetric U(1)' model with a secluded U(1)' breaking sector (the S-model). The lightest neutralino mass is smaller than in the minimal supersymmetric standard model; for instance, m_\chi < 100 GeV in the limit that the U(1)' gaugino mass is large compared to the electroweak scale. We find that the Z-\chi-\chi coupling can be enhanced due to the singlino components in the extended neutralino sector. Neutralino annihilation through the Z-resonance then reproduces the measured cold dark matter density over broad regions of the model parameter space.Comment: Version to be published in Physics Letters B. 13 pages, Revtex4, epsf.sty, 13 postscript figure

Is the vacuum stable?

The experimental data, as well as theoretical considerations allow (and, in some cases, require) the Universe at present to rest in a false vacuum, whose approximate stability imposes constraints on the model parameters. Under very general and mild conditions, the Universe would have ended up in the standard vacuum even if the potential has deeper minima, provided there was a period in which the temperature was > 1 TeV. In many cases, the zero temperature tunneling rate is much smaller than the inverse age of the Universe. Future experiments may reveal that the physical vacuum is not entirely stable. Implications for the cosmological constant are discussed.Comment: 8 pages, plain latex, postscript file also available at ftp://dept.physics.upenn.edu/pub/Kusenko/UPR709T.p