Effects of surface preparation on quality of aluminum alloy weldments

Study of surface preparations and surface contamination effects on the welding of 2014 aluminum involves several methods of surface analysis to identify surface properties conducive to weld defects. These methods are radioactive evaporation, spectral reflectance mass spectroscopy, gas chromatography and spark emission spectroscopy

Opening the black box of outer space : the case of Jason-3

If you look at a rendering of planet Earth from a bird's eye view, you will see satellites orbiting the planet like electrons, each one a testament to humanity's expansion beyond Earth's atmosphere. It begs the question: what is this new humanized landscape? The dominant voice that has attempted to answer this question is the realist one, which has led the charge of academic inquiry into outer space since the fateful launch of the Sputnik in 1957. Though enlightening in some respects, the realist perspective oftentimes obscures the heterogeneous complexity of the actors, actions, limits and possibilities that have constructed this very humanized outer space. This paper looks at the humanization of outer space through the lens of JASON-3, an internationally collaborative satellite designed primarily to measure the topography of the Earth's oceans. A vast number of actors collaborated to enact the network that created JASON-3, including bureaucratic agencies, academics, private contractors, political bodies, other satellites, the sun and even gravity. This paper will focus on these actors and the work that they did to form the network, showing a glimpse of the entangled connections that eventually produced JASON-3. Through telling this story, I argue: (1) outer space is more complex than state-level relations and (2) critical geography -- with its insight into relational spaces and deconstructing power structures -- has a unique place to fill in outer space literature.Dr. Mark Palmer, Advisor.|Selected images omitted.Includes bibliographical references (pages 181-192)

Self-consistent account for phonon induced corrections to quadrupole moments of odd nuclei. Pole and non-pole diagrams

Recent results of the description of quadrupole moments of odd semi-magic nuclei are briefly reviewed. They are based on the self-consistent theory of finite Fermi systems with account for the phonon-particle coupling (PC) effects. The self-consistent model for describing the PC effects was developed previously for magnetic moments. Account for the non-pole diagrams is an important ingredient of this model. In addition to previously reported results for the odd In and Sb isotopes, which are the proton-odd neighbors of even tin nuclei, we present new results for odd Bi isotopes, the odd neighbors of even lead isotopes. In general, account for the PC corrections makes the agreement with the experimental data significantly better.Comment: 8 pages, 4 figures. Presented at ICNFP1

Every Sentiment Has a History : Affect and the Archive: An Interview with Ann Stoler

Ann Stoler is Willy Brandt Distinguished University Professor of Anthropology and Historical Studies at The New School for Social Research. She is the director of the Institute for Critical Social Inquiry. She has worked extensively on the politics of knowledge, colonial governance, racial epistemologies, the sexual politics of empire, and ethnography of the archives. Her books include Race and the Education of Desire: Foucault\u27s History of Sexuality and the Colonial Order of Things (1995), Carnal Knowledge and Imperial Power: Race and the Intimate in Colonial Rule (2002, 2010), and Along the Archival Grain: Epistemic Anxieties and Colonial Common Sense (2009)

Gut Feelings: Race and the Embodied Self: An Interview with Shannon Sullivan

Shannon Sullivan is Chair of Philosophy and Professor of Philosophy and Health Psychology at UNC Charlotte. She specializes in feminist philosophy, critical philosophy of race, American philosophy (especially pragmatism), . and continental philosophy. She is the author of four books, most recently, Good White People: The Problem with Middle-Class White Anti-Racism (2014) and The Physiology of Sexist and Racist Oppression (2015). She also is co-editor of four books, including Race and Epistemologies of Ignorance (2007) and Feminist Interpretations of William James (2015)

The first quadrupole excitations in spherical nuclei and nuclear pairing

Excitation energies and transition probabilities of the first 2+ excitations in even lead, tin and nickel isotopes are calculated within the self-consistent Theory of Finite Fermi Systems based on the Energy Density Functional by Fayans et al. A reasonable agreement with available experimental data is obtained. The effect of the density dependence of the effective pairing interaction is analyzed in detail by comparing results obtained with volume and surface pairing. The effect is found to be noticeable, especially for the 2+ energies which are systematically higher at 200-300 keV for the volume paring as compared with the surface pairing case, the latter being in a better agreement with the data.Comment: Presented at International Conference on Nuclear Structure and Related Topics, Dubna, July 2 - 7, 201

Effects of density dependence of the effective pairing interaction on the first 2+2^+ excitations and quadrupole moments of odd nuclei

Excitation energies and transition probabilities of the first $2^+$ excitations in even tin and lead isotopes as well as the quadrupole moments of odd neighbors of these isotopes are calculated within the self-consistent Theory of Finite Fermi Systems based on the Energy Density Functional by Fayans et al. The effect of the density dependence of the effective pairing interaction is analyzed in detail by comparing results obtained with volume and surface pairing. The effect is found to be noticeable. For example, the $2^+$-energies are systematically higher at 200-300 keV for the volume paring as compared with the surface pairing case. But on the average both models reasonably agree with the data. Quadrupole moments of odd-neutron nuclei are very sensitive to the single-particle energy of the state $\lambda$ under consideration due to the Bogolyubov factor ($u^2_{\lambda}-v^2_{\lambda}$). A reasonable agreement with experiment for the quadrupole moments has been obtained for the most part of odd nuclei considered. The method used gives a reliable possibility to predict quadrupole moments of unstable odd nuclei including very neutron rich ones.Comment: LaTeX, 17 pages, 20 figures; minor modification, submitted to Phys. Rev.