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The safe operation of power transformer is vital to the reliability of modern power network. The bushing is a key component of transformer that serves to connect the transformer windings to the transmission lines. Due to its intricate structure and severe operating conditions, the bushing is among the most frequent cause of transformer failure. Therefore, it is essential to monitor the condition of transformer bushing for maintaining the safe and stable operation of grid. In this paper, we propose a graphene piezoresistive pressure sensor based on handkerchief paper (GHPPS) to monitor the internal pressure of transformer bushing. The GHPPS possesses a highly porous structure and a fibrous tissue, and exhibits a superb sensitivity to the variations of bushing internal pressure. Moreover, we compared the sensitivity and conductivity of the sensors with different paper layers. The GHPPS with 8 layers owns the highest sensitivity (15.6 kPa −1 ), the smallest response time (60 ms) and recovery time (75 ms), and the best stability. In addition, a hierarchical alarm device is used to test the monitoring capability of GHPPS at different pressure levels. The results prove that the GHPPS is a promising tool for monitoring bushing conditions.

The Spanish influenza arrived in the United States at a time when new forms of mass transportation, mass media, mass consumption, and mass warfare had vastly expanded the public places in which communicable diseases could spread. Faced with a deadly \"crowd\" disease, public health authorities tried to implement social-distancing measures at an unprecedented level of intensity.Recent historical work suggests that the early and sustained imposition of gathering bans, school closures, and other social-distancing measures significantly reduced mortality rates during the 1918—1919 epidemics. This finding makes it all the more important to understand the sources of resistance to such measures, especially since social-distancing measures remain a vital tool in managing the current H1N1 influenza pandemic. To that end, this historical analysis revisits the public health lessons learned during the 1918—1919 pandemic and reflects on their relevance for the present.

Wedgewood proposes an account of the nature of reasoning, incorporating a solution to the specific version of the deviant casual chains problem that arises for accounts of reasoning. His account of the nature of reasoning is compatible with plausible versions of naturalism.

A poem is presented.

Scholars have been quick to dismiss Georgian tragedy as mere rant and have thus failed to examine why tragic plays were regularly staged in the eighteenth century. This essay explores the \"unaccountable pleasure,\" in David Hume's words, that spectators of the genre experienced. Hume compared the feeling of witnessing a tragedy to the sweet misery of watching high-stakes gamblers risk their fortunes. Part of the attraction derived from star actresses who performed the mixed genre of tragedy topped off with a comic epilogue in plays such as Edward Moore's The Gamester, George Lillo's The London Merchant, and David Garrick's The Fatal Marriage. This essay argues that eighteenth-century tragedies portray the struggles of a genre caught between a world ruled by poetic justice and one flung about by uncontrollable economic powers. Further, in its democratization of grievable subjects and its metatheatrical relation to the tragic, Georgian tragedy anticipates modern developments of the genre.

As revealed in a 1757 criminal investigation, a stunning range of goods were stolen, traded, pawned, and purchased by enslaved Africans and their accomplices in the hinterlands of Louisiana. Such thefts were acts of consumption. This investigation was especially revealing about the role of enslaved Africans in the circulation of consumer objects across the French and Spanish empires, thereby revealing the transnational character of objects in motion in the Atlantic world. But the global dimension of these objects also suggests how problematic the Atlantic world framework becomes when applied to the consumption of material culture, especially dress, in early America.