16 research outputs found
The origin of aqueous sulfate in Frio pore fluids and its implication for the origin of oil field brines
Assessment of the discriminative stimulus effects of cocaine in the rat: Lack of interaction with opioids
Paleosol barometer indicates extreme fluctuations in atmospheric CO2 across the Cretaceous-Tertiary boundary
Creating Political Legitimacy
It is often held that the establishment of electoral democracy is key to the creation of political legitimacy. This article challenges this idea and presents an alternative. Many empirical studies reveal that electoral democracy has no necessary implications for the establishment of legitimacy. Even in the successful and stable Nordic democracies, there is scant evidence that legitimacy is created on the input side of the political system. For example political legitimacy in the former Yugoslavia broke down not because ethnic groups realized they would become permanent minorities but because the new Croatian state violated citizens’ rights in the exercise of power. Legitimacy turns out to be created, maintained, and destroyed not at the input but at the output side of the political system. Hence, political legitimacy depends at least as much on the quality of government tha
Princípios de justiça e avaliação de políticas Principles of justice and policy evaluation
O artigo sugere uma forma de vincular duas coisas que têm sido tratadas separadamente pela literatura: a discussão filosófica sobre princípios de justiça e a avaliação de políticas sociais.<br>The article proposes a way of putting together two things which usually are dealt with separatedly: the philosophic discussion on principles of justice and the evaluation of social policies
Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium
Polycyclic aromatic hydrocarbons (PAHs) contain ≲20% of the carbon in the interstellar medium. They are potentially produced in circumstellar environments (at temperatures ≳1000 kelvin), by reactions within cold (~10 kelvin) interstellar clouds, or by processing of carbon-rich dust grains. We report isotopic properties of PAHs extracted from samples of the asteroid Ryugu and the meteorite Murchison. The doubly-13C substituted compositions (D2×13C values) of the PAHs naphthalene, fluoranthene, and pyrene are 9 to 51% higher than values expected for a stochastic distribution of isotopes. The D2×13C values are higher than expected if the PAHs formed in a circumstellar environment, but consistent with formation in the interstellar medium. By contrast, the PAHs phenanthrene and anthracene in Ryugu samples have D2×13C values consistent with formation by higher-temperature reactions
