Formulation Efforts for Direct Vitrification of INEEL Blend Calcine Waste Simulate: Fiscal Year 2000

This report documents the results of glass formulation efforts for Idaho National Engineering and Environmental Laboratory (INEEL) high level waste (HWL) calcine. Two waste compositions were used during testing. Testing started by using the Run 78 calcine composition and switched to simulated Blend calcine composition when it became available. The goal of the glass formulation efforts was to develop a frit composition that will accept higher waste loading that satisfies the glass processing and product acceptance constraints. 1. Melting temperature of 1125 ? 25?C 2. Viscosity between 2 and 10 Pa?s at the melting temperature 3. Liquidus temperature at least 100?C below the melting temperature 4. Normalized release of B, Li and Na each below 1 g/m2 (per ASTM C 1285-97) Glass formulation efforts tested several frit compositions with variable waste loadings of Run 78 calcine waste simulant. Frit 107 was selected as the primary candidate for processing since it met all process and performance criteria up to 45 mass% waste loading. When the simulated Blend calcine waste composition became available Frits 107 and 108 compositions were retested and again Frit 107 remained the primary candidate. However, both frits suffered a decrease in waste loading when switching from the Run 78 calcine to simulated Blend calcine waste composition. This was due to increase concentrations of both F and Al2O3 along with a decrease in CaO and Na2O in the simulate Blend calcine waste all of which have strong impacts on the glass properties that limit waste loading of this type of waste

Why Reform Fails : The ‘Politics of Policies’ in Costa Rican Telecommunications Liberalization

As the \u27Washington Consensus\u27 reforms are losing momentum in Latin America, the Inter- American Development Bank (IDB) is calling for shifting the focus from the content of policy choices to the political process of their implementation. As this paper studies the paradigmatic case of telecommunications reform in Costa Rica it underscores the importance of these \u27politics of policies\u27. The analysis finds, however, that the failure of repeated liberalization initiatives was not only due to policy-makers\u27 errors in steering the project through \u27the messy world of politics\u27 (IDB); instead, as liberalization remained unpopular, policy content indeed mattered, and only the interaction of both explains the outcome. Particular attention is drawn to the political feed-back effects, as the failed reform, precisely because it had been backed by bi-partisan support, became a catalyst for the disintegration of the country\u27s long-standing two-party system.In dem Maße, in dem die mit dem „Washington Consensus“ verbundenen Reformen in Lateinamerika ins Stocken geraten sind, plädiert die Inter-American Development Bank (IDB) für eine stärkere Berücksichtigung nicht nur der Politikinhalte (policies), sondern auch des politischen Prozesses von deren Umsetzung (politics). Die vorliegende Untersuchung zum paradigmatischen Fall der Reform des Telekommunikationssektors in Costa Rica unterstreicht die Bedeutung dieser „politics of policies“. Sie zeigt allerdings auch, dass Ursache für das Scheiten wiederholter Liberalisierungsinitiativen nicht nur Fehler der Politiker sind, das Vorhaben durch „die unordentliche Welt der politics“ (IDB) zu steuern. Die breite gesellschaftliche Opposition gegen den Liberalisierungskurs bleibt. Nur die Interaktion von beiden, politics und policies, erklärt Verlauf und Ergebnis der Reform. Besonderes Augenmerk widmet die Studie den politischen Rückwirkungen der gescheiterten Reform: Sie wurde, just weil sie von beiden etablierten Parteien unterstützt wurde, zum Katalysator für den Zerfall des seit Jahrzehnten etablierten Zweiparteiensystems des Landes

Glass Formulation Development for INEEL Sodium-Bearing Waste

Studies were performed to develop and test a glass formulation for immobilization of sodium-bearing waste (SBW). SBW is a high soda, acid high activity waste stored at the INEEL in 10 underground tanks. It was determined in previous studies that SBW?s sulfur content dictates the its loading in borosilicate glasses to be melted by currently assumed processes. If the sulfur content (which is ~4.5 mass% SO3 on a non-volatile oxide basis in SBW) of the melter feed is too high then a molten alkali sulfate containing salt phase accumulates on the melt surface. The avoidance of salt accumulation during the melter process and the maximization of sulfur incorporation into the glass melt were the main focus of this development work. A glass was developed for 20 mass% SBW (on a non-volatile oxide basis), which contained 0.91 mass% SO3, that met all the processing and product quality constraint determined for SBW vitrification at a planned INEEL treatment plant?SBW-22-20. This report summarizes the formulation efforts and presents the data developed on a series of glasses with simulated SBW. Summar

Reduced fire severity offers near-term buffer to climate-driven declines in conifer resilience across the western United States

Increasing fire severity and warmer, drier postfire conditions are making forests in the western United States (West) vulnerable to ecological transformation. Yet, the relative importance of and interactions between these drivers of forest change remain unresolved, particularly over upcoming decades. Here, we assess how the interactive impacts of changing climate and wildfire activity influenced conifer regeneration after 334 wildfires, using a dataset of postfire conifer regeneration from 10,230 field plots. Our findings highlight declining regeneration capacity across the West over the past four decades for the eight dominant conifer species studied. Postfire regeneration is sensitive to high-severity fire, which limits seed availability, and postfire climate, which influences seedling establishment. In the near-term, projected differences in recruitment probability between low- and high-severity fire scenarios were larger than projected climate change impacts for most species, suggesting that reductions in fire severity, and resultant impacts on seed availability, could partially offset expected climate-driven declines in postfire regeneration. Across 40 to 42% of the study area, we project postfire conifer regeneration to be likely following low-severity but not high-severity fire under future climate scenarios (2031 to 2050). However, increasingly warm, dry climate conditions are projected to eventually outweigh the influence of fire severity and seed availability. The percent of the study area considered unlikely to experience conifer regeneration, regardless of fire severity, increased from 5% in 1981 to 2000 to 26 to 31% by mid-century, highlighting a limited time window over which management actions that reduce fire severity may effectively support postfire conifer regeneration. © 2023 the Author(s)

La democracia, la convivencia y la política centroamericana de Estados Unidos

La siguiente ponencia presenta un análisis sobre la democracia, la convivencia y la politica de los Estados Unido

La consolidación democrática en los tiempos coléricos.

El siguiente artículo presenta un análisis de la democracia en los tiempos colérico

Democracy and Human Rights in Latin America

Questions about democracy and human rights have emerged in the advent of the 21st century, a time in which the prospects for progress in these areas have never been greater. This book is designed to respond to some of these questions with reference to Latin America, where democratic regimes have alternated with authoritarian governments and the human rights record is inconsistent at best. Taken together, these essays reveal the complexity of democratic transitions, the importance of support for human rights, and the way in which democracy and human rights are linked in Latin America. The first part of the book includes chapters that cast a critical eye on democracy and human rights trends in Chile, Venezuela, Columbia, and Brazil. Part two gauges the impact and prospects of foreign initiatives promoting democracy and human rights in the region, focusing especially on those efforts made by the United States in Haiti and Cuba. Each chapter reaffirms the essential linkages between procedural democracy and substantive human rights, and argues that states with authoritarian pasts must reorient their political cultures, and that these initiatives must come from both domestic and international agents. Students and scholars interested in the problems and prospects inherent in democratic transitions in contemporary Latin America will find this collection enlightening. -- Amazon Descriptionhttps://fisherpub.sjf.edu/bookshelf/1023/thumbnail.jp

Democracy and Human Rights in Latin America

Questions about democracy and human rights have emerged in the advent of the 21st century, a time in which the prospects for progress in these areas have never been greater. This book is designed to respond to some of these questions with reference to Latin America, where democratic regimes have alternated with authoritarian governments and the human rights record is inconsistent at best. Taken together, these essays reveal the complexity of democratic transitions, the importance of support for human rights, and the way in which democracy and human rights are linked in Latin America. The first part of the book includes chapters that cast a critical eye on democracy and human rights trends in Chile, Venezuela, Columbia, and Brazil. Part two gauges the impact and prospects of foreign initiatives promoting democracy and human rights in the region, focusing especially on those efforts made by the United States in Haiti and Cuba. Each chapter reaffirms the essential linkages between procedural democracy and substantive human rights, and argues that states with authoritarian pasts must reorient their political cultures, and that these initiatives must come from both domestic and international agents. Students and scholars interested in the problems and prospects inherent in democratic transitions in contemporary Latin America will find this collection enlightening. -- Amazon Descriptionhttps://fisherpub.sjfc.edu/bookshelf/1023/thumbnail.jp

Cardiac Surgery in Patients with Drug Eluting Stents: The Risk of Stopping Clopidogrel

Recommendations for the duration of clopidogrel (Plavix ® , Bristol Meyers Squibb, New York, NY) therapy following drug eluting stent (DES) insertion have been subject to recent criticism. Suggested recommendations for the continuation of clopidogrel have been extended to one year following DES insertion. However, patients with a previously inserted DES who now require cardiac surgery are requested to stop clopidogrel perioperatively. The safety of this practice is unclear. We report two cases of elective cardiac surgical intervention after the insertion of DES complicated by perioperative or intraoperative acute coronary ischemia attributed to DES closure