Radiochemical Analyses of the Filter Cake, Granular Activated Carbon, and Treated Ground Water from the DTSC Stringfellow Superfund Site Pretreatment Plant

The Department of Toxic Substance Control (DTSC) requested that Lawrence Livermore National Laboratory (LLNL) evaluate the treatment process currently employed at the Department's Stringfellow Superfund Site Pretreatment Plant (PTP) site to determine if wastes originating from the site were properly managed with regards to their radioactivity. In order to evaluate the current management strategy, LLNL suggested that DTSC characterize the effluents from the waste treatment system for radionuclide content. A sampling plan was developed; samples were collected and analyzed for radioactive constituents. Following is brief summary of those results and what implications for waste characterization may be made. (1) The sampling and analysis provides strong evidence that the radionuclides present are Naturally Occurring Radioactive Material (NORM). (2) The greatest source of radioactivity in the samples was naturally occurring uranium. The sample results indicate that the uranium concentration in the filter cake is higher than the Granular Activated Carbon (GAC) samples. (11 -14 and 2-6 ppm respectively). (3) No radiologic background for geologic materials has been established for the Stringfellow site, and comprehensive testing of the process stream has not been conducted. Without site-specific testing of geologic materials and waste process streams, it is not possible to conclude if filter cake and spent GAC samples contain radioactivity concentrated above natural background levels, or if radionuclides are being concentrated by the waste treatment process. Recommendation: The regulation of Technologically Enhanced, Naturally Occurring Radioactive Materials (T-NORM) is complex. Since the results of this study do not conclusively demonstrate that natural radioactive materials have not been concentrated by the treatment process it is recommended that the DTSC consult with the Department of Health Services (DHS) Radiological Health Branch to determine if any further action is warranted. If it were deemed desirable to establish a background for the Stringfellow setting LLNL would recommend that additional samples be taken and analyzed by LLNL using the same methods presented in this report

Predicting the broadband response of a layered cone-cylinder-cone shell

The dynamic response of an aerospace layered structure composed of a combination of conical and cylindrical shells is hereby modelled. In the low and the mid-frequency ranges a WFEM derived ESL approach implemented within a FEM is used in order to predict the response of the shell. Furthermore, in the high frequency range the CLF of the connected subsystems are calculated using a WFEM/FEM approach. These CLF are implemented within a SEA approach in order to predict the structural response. The accuracy and robustness of the developed approaches are exhibited by comparisons to experimental measurements on a layered conical-shell-conical configuration

LES-based Study of the Roughness Effects on the Wake of a Circular Cylinder from Subcritical to Transcritical Reynolds Numbers

This paper investigates the effects of surface roughness on the flow past a circular cylinder at subcritical to transcritical Reynolds numbers. Large eddy simulations of the flow for sand grain roughness of size k/D = 0.02 are performed (D is the cylinder diameter). Results show that surface roughness triggers the transition to turbulence in the boundary layer at all Reynolds numbers, thus leading to an early separation caused by the increased momentum deficit, especially at transcritical Reynolds numbers. Even at subcritical Reynolds numbers, boundary layer instabilities are triggered in the roughness sublayer and eventually lead to the transition to turbulence. The early separation at transcritical Reynolds numbers leads to a wake topology similar to that of the subcritical regime, resulting in an increased drag coefficient and lower Strouhal number. Turbulent statistics in the wake are also affected by roughness; the Reynolds stresses are larger due to the increased turbulent kinetic energy production in the boundary layer and separated shear layers close to the cylinder shoulders.We acknowledge “Red Española de Surpercomputación” (RES) for awarding us access to the MareNostrum III machine based in Barcelona, Spain (Ref. FI-2015-2-0026 and FI-2015-3-0011). We also acknowledge PRACE for awarding us access to Fermi and Marconi Supercomputers at Cineca, Italy (Ref. 2015133120). Oriol Lehmkuhl acknowledges a PDJ 2014 Grant by AGAUR (Generalitat de Catalunya). Ugo Piomelli acknowledges the support of the Natural Sciences and Engineering Research Council (NSERC) of Canada under the Discovery Grant Programme (Grant No. RGPIN-2016-04391). Ricard Borrell acknowledges a Juan de la Cierva postdoctoral grant (IJCI-2014-21034). Ivette Rodriguez, Oriol Lehmkuhl, Ricard Borrell and Assensi Oliva acknowledge Ministerio de Economía y Competitividad, Secretaría de Estado de Investigación, Desarrollo e Innovación, Spain (ref. ENE2014-60577-R).Peer ReviewedPostprint (author's final draft

Kiri tundmatule

Szechenyi, Istvan, 1791-1860, ungari poliitik ja kirjani

Kiri Nikolai Fuss'ile

Szechenyi, Ferencz, 1754-1820, ungari krahv, salanõunikFuss, Nikolai, 1755-1825, matemaatik, Peterburi TA sekretärSaadab väljaande Catalogus Bibliothecae Hungaricae Francisci lisakõite II, mille kättesaamisest palub endale teatad

Cosmopolitan Americanisms: Post-9/11 Transnational Immigrant Narratives

Immigration is simultaneously idealized in American cultural memory and demonized in contemporary political discourse. Likewise, transculturalism defines American culture yet is frequently depicted as a threat to a dominant ideal of “America.” These contradictions have only become more entrenched in the wake of the terrorist attacks of September 11, 2001. My thesis addresses these contradictions through an examination of three works of twenty-first century U.S. fiction: recent novels of immigration by Chimamanda Ngozie Adichie, Teju Cole, and Mohsin Hamid. All three texts feature protagonists whose experiences as “new Americans” force them to confront these ideological contestations in quite intimate terms; the dominant culture’s framing of “immigration” as both quintessentially American and anti-American translates, in these characters’ experiences, as a distinct feeling of psychological isolation that overlays their condition of ostensible belonging. In Adichie’s novel Americanah, Cole’s Open City, and Hamid’s The Reluctant Fundamentalist, their respective protagonists each experience feelings of community in explicitly multicultural, multiethnic, multiracial, and diasporic American urban spaces, but whose narratives nonetheless terminate in portraits of social and psychological isolation and alienation. My analysis draws on recent scholarship on transnationalism in American literature, theories of cosmopolitanism, and critical race theory to illuminate these novels’ nuanced responses to the ideological contradictions surrounding the theme of immigration in present-day U.S. culture from the perspective of American immigrants’ lived experiences

Daguerreotypen

von einem ungarischen Edelmann [d. i. Dénes Szechenyi]Verf. ermittelt Antiquaria

Power and order in Asia: a survey of regional expectations

This survey of strategic elites in eleven Asia Pacific economies examines the implications of major power rivalries and confrontation, coinciding with increased economic cooperation and community building. Overview Asia stands out as the world’s most vibrant region, where rivalries and confrontation coincide with increased economic cooperation and community building. How should we interpret these two dynamics, and what are the implications for U.S. policy? With the support of the MacArthur Foundation, Asahi Shimbun, Joongang Ilbo, and China Times, the Center for Strategic and International Studies (CSIS) collaborated with Opinion Dynamics Corporation on a survey of strategic elites in 11 Asia Pacific economies