Charge Influence On Mini Black Hole's Cross Section

In this work we study the electric charge effect on the cross section production of charged mini black holes (MBH) in accelerators. We analyze the charged MBH solution using the {\it fat brane} approximation in the context of the ADD model. The maximum charge-mass ratio condition for the existence of a horizon radius is discussed. We show that the electric charge causes a decrease in this radius and, consequently, in the cross section. This reduction is negligible for protons and light ions but can be important for heavy ions.Comment: 4 pages, 0 figure. To be published in Int. J. Mod. Phys. D

SIC PTCON00027 CARREGAL DO SAL. Relatório Final. Cartografia de Habitats Naturais e Seminaturais e Flora dos Sítios Classificados no Âmbito da Diretiva Habitats – Cart-Pg Rn2000 (Operação Poseur-03-2215-Fc-000005)

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SIC PTCON0004 MALCATA. Proposta de Relatório Final. Cartografia de Habitats Naturais e Seminaturais e Flora dos Sítios Classificados no Âmbito da Diretiva Habitats – Cart-Pg Rn2000 (Operação Poseur-03-2215-Fc-000005)

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SIC PTCON0029 CABEÇÃO. Proposta de Relatório Final. Cartografia de Habitats Naturais e Seminaturais e Flora dos Sítios Classificados no Âmbito da Diretiva Habitats – Cart-Pg Rn2000 (Operação Poseur-03-2215-Fc-000005)

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SIC PTCON0004 MALCATA. Relatório Final. Cartografia de Habitats Naturais e Seminaturais e Flora dos Sítios Classificados no Âmbito da Diretiva Habitats – Cart-Pg Rn2000 (Operação Poseur-03-2215-Fc-000005)

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SIC PTCON0031 MONFURADO. Relatório Final. Cartografia de Habitats Naturais e Seminaturais e Flora dos Sítios Classificados no Âmbito da Diretiva Habitats – Cart-Pg Rn2000 (Operação Poseur-03-2215-Fc-000005)

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SIC PTCON0031 MONFURADO. Proposta de Relatório Final. Cartografia de Habitats Naturais e Seminaturais e Flora dos Sítios Classificados no Âmbito da Diretiva Habitats – Cart-Pg Rn2000 (Operação Poseur-03-2215-Fc-000005)

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The Future of Democracy: Challenges & Prospects

Unprecedented speed, interconnectivity, complexity and uncertainty are impacting all spheres of global society today, presenting challenges that were not foreseen even a few years ago. The end of the Cold War was interpreted by many as the final victory for democracy and capitalism over authoritarian socialism. A quarter century after the sudden collapse of communism and the emergence of a new democratic consensus, liberal democracy itself is under threat. Former bastions of democracy are exhibiting a level of populism and polarization previously associated only with nascent, tenuous democracies in countries with low levels of education and economic development. The shared vision that constituted the foundation for the democratic consensus is breaking down. Doubts, fears and insecurity have shaken faith in the institutions of governance and the confidence of youth in a better future. Nations are closing their borders, retreating from global cooperation, and casting the blame on minorities and foreigners in a manner reminiscent of an earlier century. Participants in the WAAS Roundtable on the Future of Democracy at Dubrovnik on April 3-5, 2018 recognized that this shift in direction is the result of a complex nexus of forces that have been shaping the future for decades. The group shared valuable insights into our present dilemma while maintaining the diversity of perspective essential for understanding a complex, multidimensional global phenomenon still in the process of unfolding. The discussion identified numerous practical steps that can be taken to moderate extreme aberrations resulting from the misuse of social power. It also recognized that fundamental changes are needed to develop more effective systems of governance capable of fully supporting the aspirations of humanity, maximizing the equity and effectiveness of social institutions and the future evolution of global society