208 research outputs found

    Standards as Barriers Versus Standards as Catalysts: Assessing the Impact of HACCP Implementation on U.S. Seafood Imports

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    The United States mandated a Hazard Analysis Critical Control Points (HACCP) food safety standard for seafood in 1997. Panel model results for 1990 to 2004 suggest that HACCP introduction had a negative and significant impact on overall imports from the top thirty-three suppliers. While the effect for developed countries was positive, the negative effect for developing countries supports the view of “standards as barriers” versus “standards as catalysts.” A different perspective emerges from individual country-level analysis. Regardless of development status, leading seafood exporters generally experienced a positive HACCP effect, while most other smaller trading partners faced a negative effect

    Flamingo Vol. I N 4

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    Orange Owl. Off Again . Prose. 1. Jester. Alas! . Prose. 1. Anonymous. Untitled. Prose. 1. Purple Cow. Untitled. Prose. 1. Banter. Untitled. Prose. 1. Burr. Pride . Prose. 2. Lampoon. Untitled. Prose. 2. The Goblin. Untitled. Prose. 2. Exchange. Untitled. Prose. 2. Tiger. Untitled. Prose. 2. Chaparral. O, Dear! Prose. 2. Hicks, H. Leslie. Untitled. Picture. 3. Anonymous. Denison Customs We Don\u27t Want Revived . Prose. 4. Wellman, Chester. Buffalo George . Prose. 5. Bovington, R.D. Avery The Anxious . Prose. 9. D.U.K. Spring In a Poetic Lie Sense . Prose. 10. Anonymous. Yeh? . Prose. 10. Anonymous. A Review . Prose. 10. George. Vest Pocket Views . 11 Anonymous. Untitled. Prose. 11. The Siren. Untitled. Prose. 11. Montgomery, E.E. Commencement in 1871 . Prose. 12. Anonymous. A Riddle . Poem. 12. Anonymous. Song From Pippa Passes . Poem. 12. Orange Peel. Untitled. Prose. 12. Jug. Sad News . Prose. 12. Anonymous. Untitled. Prose. 14. Keeler, Clyde E. Picture. 16. G.W.B. Butterflies . Poem. 18. C.E.K. Scientific Sonnett . Poem. 18. Anonymous Untitled. Poem. 18. T.P.G. Twilight . Poem. 18. R.D.B. Untitled. Poem. 18. G.W.B. Use of The Immaterial . Poem. 18. Anonymous. Untitled. Prose. 19. Anonymous. Untitled. Picture. 19. Anonymous. Tuff . Prose. 19. Octopus. Untitled. Prose. 19. Panther. Untitled. Prose. 19. Orange Ade. The Fable of the Scheming Sisters . Prose. 19. Anonymous. Untitled. Prose. 20. Brown Jug. Untitled. Prose. 20. Potter, W.M. Letters Of A Japanese Sandman . Prose. 20. Anonymous. Well Known Seniors . Prose. 21. Hicks. Well-Known Seniors . Picture. 21. Anonymous. A Chemical Drama . Prose. 22. R.D.B. Untitled. Picture. 23 Anonymous. News of The Month . Prose. 23. Anonymous. Student Philosophy . Prose. 23. Anonymous. Untitled. Prose. 23. Keeler, Clyde. Empty? Picture. 26. Grogan. Untitled. Picture. 27. Anonymous. Untitled. Prose. 27. Drexerd. Untitled. Prose. 27. Mugwump. Untitled. Prose. 27. Sun Dodger. Circumstantial Evidence . Poem. 27. Pelican. Jailed toot Sweet . Prose. 27. Chaparral. Untitled. Prose. 27. Brown Jug. Untitled. Prose. 27. Tiger. Untitled. Prose. 27. Siren. Untitled. Prose. 27. Puppet. Untitled. Prose. 27. Widow. Untitled. Prose. 27. Yale Record. Untitled. Prose. 27. Frivol. Untitled. Prose. 27. Gorkus. Untitled. Poem. 28. Dirge. Untitled. Prose. 28. Exchange. Untitled. Prose. 28. Anonymous. Untitled. prose. 29. Anonymous. Ye Wise Virgin . Prose. 30. Froth. Overheard At The Hashery . Prose. 30 Reel, Virginia. Untitled. Prose. 30. Keeler, Clyde. Untitled. Picture. 31. Banter. Untitled. Prose. 31. Puppet. Untitled. Prose. 31. Banter. Untitled. Prose. 31. Jester. Untitled. Prose. 32. Record. Untitled. Prose. 32. Anonymous. A Cultivated Joke . Prose. 32. Lampoon. Untitled. Prose. 32. Exchange. Untitled. Prose. 32. J.M. Untitled. Picture. 31. J.M. Untitled. Picture. 32. Holt, Kilburn. Bo-Peep As She Might Have Been Sung By--- . Poem. 8. Peterson, Louise. Helpful hints For Heedless Horsewomen . Prose. 11

    Gravitationally lensed QSOs in the ISSIS/WSO-UV era

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    Gravitationally lensed QSOs (GLQs) at redshift z = 1-2 play a key role in understanding the cosmic evolution of the innermost parts of active galaxies (black holes, accretion disks, coronas and internal jets), as well as the structure of galaxies at intermediate redshifts. With respect to studies of normal QSOs, GLQ programmes have several advantages. For example, a monitoring of GLQs may lead to unambiguous detections of intrinsic and extrinsic variations. Both kinds of variations can be used to discuss central engines in distant QSOs, and mass distributions and compositions of lensing galaxies. In this context, UV data are of particular interest, since they correspond to emissions from the immediate surroundings of the supermassive black hole. We describe some observation strategies to analyse optically bright GLQs at z of about 1.5, using ISSIS (CfS) on board World Space Observatory-Ultraviolet.Comment: 7 pages, 4 figures, Accepted for publication in Astrophysics & Space Scienc

    The inflationary bispectrum with curved field-space

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    We compute the covariant three-point function near horizon-crossing for a system of slowly-rolling scalar fields during an inflationary epoch, allowing for an arbitrary field-space metric. We show explicitly how to compute its subsequent evolution using a covariantized version of the separate universe or "delta-N" expansion, which must be augmented by terms measuring curvature of the field-space manifold, and give the nonlinear gauge transformation to the comoving curvature perturbation. Nonlinearities induced by the field-space curvature terms are a new and potentially significant source of non-Gaussianity. We show how inflationary models with non-minimal coupling to the spacetime Ricci scalar can be accommodated within this framework. This yields a simple toolkit allowing the bispectrum to be computed in models with non-negligible field-space curvature.Comment: 22 pages, plus appendix and reference

    The chemical enrichment of the ICM from hydrodynamical simulations

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    The study of the metal enrichment of the intra-cluster and inter-galactic media (ICM and IGM) represents a direct means to reconstruct the past history of star formation, the role of feedback processes and the gas-dynamical processes which determine the evolution of the cosmic baryons. In this paper we review the approaches that have been followed so far to model the enrichment of the ICM in a cosmological context. While our presentation will be focused on the role played by hydrodynamical simulations, we will also discuss other approaches based on semi-analytical models of galaxy formation, also critically discussing pros and cons of the different methods. We will first review the concept of the model of chemical evolution to be implemented in any chemo-dynamical description. We will emphasise how the predictions of this model critically depend on the choice of the stellar initial mass function, on the stellar life-times and on the stellar yields. We will then overview the comparisons presented so far between X-ray observations of the ICM enrichment and model predictions. We will show how the most recent chemo-dynamical models are able to capture the basic features of the observed metal content of the ICM and its evolution. We will conclude by highlighting the open questions in this study and the direction of improvements for cosmological chemo-dynamical models of the next generation.Comment: 25 pages, 11 figures, accepted for publication in Space Science Reviews, special issue "Clusters of galaxies: beyond the thermal view", Editor J.S. Kaastra, Chapter 18; work done by an international team at the International Space Science Institute (ISSI), Bern, organised by J.S. Kaastra, A.M. Bykov, S. Schindler & J.A.M. Bleeke

    Response of Wheat Fungal Diseases to Elevated Atmospheric CO2 Level

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    Infection with fungal pathogens on wheat varieties with different levels of resistance was tested at ambient (NC, 390 ppm) and elevated (EC, 750 ppm) atmospheric CO2 levels in the phytotron. EC was found to affect many aspects of the plant-pathogen interaction. Infection with most fungal diseases was usually found to be promoted by elevated CO2 level in susceptible varieties. Powdery mildew, leaf rust and stem rust produced more severe symptoms on plants of susceptible varieties, while resistant varieties were not infected even at EC. The penetration of Fusarium head blight (FHB) into the spike was delayed by EC in Mv Mambo, while it was unaffected in Mv Regiment and stimulated in Mv Emma. EC increased the propagation of FHB in Mv Mambo and Mv Emma. Enhanced resistance to the spread of Fusarium within the plant was only found in Mv Regiment, which has good resistance to penetration but poor resistance to the spread of FHB at NC. FHB infection was more severe at EC in two varieties, while the plants of Mv Regiment, which has the best field resistance at NC, did not exhibit a higher infection level at EC. The above results suggest that breeding for new resistant varieties will remain a useful means of preventing more severe infection in a future with higher atmospheric CO2 levels

    Horizontal Branch Stars: The Interplay between Observations and Theory, and Insights into the Formation of the Galaxy

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    We review HB stars in a broad astrophysical context, including both variable and non-variable stars. A reassessment of the Oosterhoff dichotomy is presented, which provides unprecedented detail regarding its origin and systematics. We show that the Oosterhoff dichotomy and the distribution of globular clusters (GCs) in the HB morphology-metallicity plane both exclude, with high statistical significance, the possibility that the Galactic halo may have formed from the accretion of dwarf galaxies resembling present-day Milky Way satellites such as Fornax, Sagittarius, and the LMC. A rediscussion of the second-parameter problem is presented. A technique is proposed to estimate the HB types of extragalactic GCs on the basis of integrated far-UV photometry. The relationship between the absolute V magnitude of the HB at the RR Lyrae level and metallicity, as obtained on the basis of trigonometric parallax measurements for the star RR Lyrae, is also revisited, giving a distance modulus to the LMC of (m-M)_0 = 18.44+/-0.11. RR Lyrae period change rates are studied. Finally, the conductive opacities used in evolutionary calculations of low-mass stars are investigated. [ABRIDGED]Comment: 56 pages, 22 figures. Invited review, to appear in Astrophysics and Space Scienc

    Heavy quarkonium: progress, puzzles, and opportunities

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    A golden age for heavy quarkonium physics dawned a decade ago, initiated by the confluence of exciting advances in quantum chromodynamics (QCD) and an explosion of related experimental activity. The early years of this period were chronicled in the Quarkonium Working Group (QWG) CERN Yellow Report (YR) in 2004, which presented a comprehensive review of the status of the field at that time and provided specific recommendations for further progress. However, the broad spectrum of subsequent breakthroughs, surprises, and continuing puzzles could only be partially anticipated. Since the release of the YR, the BESII program concluded only to give birth to BESIII; the BB-factories and CLEO-c flourished; quarkonium production and polarization measurements at HERA and the Tevatron matured; and heavy-ion collisions at RHIC have opened a window on the deconfinement regime. All these experiments leave legacies of quality, precision, and unsolved mysteries for quarkonium physics, and therefore beg for continuing investigations. The plethora of newly-found quarkonium-like states unleashed a flood of theoretical investigations into new forms of matter such as quark-gluon hybrids, mesonic molecules, and tetraquarks. Measurements of the spectroscopy, decays, production, and in-medium behavior of c\bar{c}, b\bar{b}, and b\bar{c} bound states have been shown to validate some theoretical approaches to QCD and highlight lack of quantitative success for others. The intriguing details of quarkonium suppression in heavy-ion collisions that have emerged from RHIC have elevated the importance of separating hot- and cold-nuclear-matter effects in quark-gluon plasma studies. This review systematically addresses all these matters and concludes by prioritizing directions for ongoing and future efforts.Comment: 182 pages, 112 figures. Editors: N. Brambilla, S. Eidelman, B. K. Heltsley, R. Vogt. Section Coordinators: G. T. Bodwin, E. Eichten, A. D. Frawley, A. B. Meyer, R. E. Mitchell, V. Papadimitriou, P. Petreczky, A. A. Petrov, P. Robbe, A. Vair
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