16 research outputs found

    A Real-Time Rodent Tracking System for Both Light and Dark Cycle Behavior Analysis

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    Creating Political Legitimacy

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    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

    Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium

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    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
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