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Nationwide study finds that leaks in natural gas pipelines contribute to hazardous particulate air pollution https://phys.org/news/2025-06-nationwide-leaks-natural-gas-pipelines.html

Nationwide study finds that leaks in natural gas pipelines contribute to hazardous particulate air pollution
In March 2022, 14 residents of a four-story apartment building in Silver Spring, Maryland, were hospitalized when a gas leak from a cut pipeline caused a major explosion. Every year in the United States, there are hundreds of natural gas (or methane) pipeline leaks—caused by corrosion, equipment malfunctions, and construction activities. Methane leaks are not only dangerous; they contribute to air pollution and climate change.

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This https://arxiv.org/abs/2505.06681 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Local well-posedness for a system of quadratic derivative nonlinear Schrödinger equations
We consider the Cauchy problem for a system of quadratic derivative nonlinear Schrödinger equations introduced by M. Colin and T. Colin (2004) as a model of laser-plasma interaction. Under the condition that the flow map fails to be twice differentiable, Hirayama, Kinoshita, and Okamoto (2022) proved the well-posedness by constructing a modified energy and applying the energy method. In the present paper, we improve the well-posedness result under the above condition by using the short-time Fo…

Viele #Deutsche lagern daheim alte #Smartphones. Auch wenn die Zahl der "Schubladenhandys" laut #Bitkom sinkt, ist sie extrem hoch. Imho wäre die Lösung nicht, alles wegzuwerfen, …