منابع مشابه
Gravitational Waves from Collapsing Vacuum Domains
The breaking of an approximate discrete symmetry, the final stages of a first order phase transition, or a postinflationary biased probability distribution for scalar fields are possible cosmological scenarios characterized by the presence of unstable domain wall networks. Combining analytical and numerical techniques, we show that the non-spherical collapse of these domains can be a powerful s...
متن کاملStabilization of collapsing scroll waves in systems with random heterogeneities.
In three-dimensional reaction-diffusion systems, excitation waves may form and rotate around a one-dimensional phase singularity called the filament. If the filament forms a closed curve, it will shrink over time and eventually collapse. However, filaments may pin to non-reactive objects present in the medium, reducing their rate of collapse or even allowing them to persist indefinitely. We use...
متن کاملHeat Waves and Hot Environments
Hot weather is an important determinant of human mortality. In the United States, a major heat wave can cause literally thousands of excess deaths in a given summer. Yet, for purposes of public health, the term "heat wave" is not easily defined. "Hot" is a relative term, and periods of hot weather (heat waves) vary greatly in intensity and duration. Ambient temperatures may change rapidly, and ...
متن کاملHeat waves and health protection.
http://bmj.com/cgi/content/full/333/7563/314 Updated information and services can be found at: These include: References http://bmj.com/cgi/content/full/333/7563/314#otherarticles 2 online articles that cite this article can be accessed at: http://bmj.com/cgi/content/full/333/7563/314#BIBL This article cites 6 articles, 1 of which can be accessed free at: Rapid responses http://bmj.com/cgi/elet...
متن کاملSynoptic Analysis of Early Heat Waves in Northwest of Iran
Early heat waves are extreme events that cause heavy losses in plant and animal life and cause many social and economic problems for communities. The purpose of this study was to identify synoptic patterns and statistical analysis of preterm heat waves in northwestern Iran. To do this, the maximum daily temperature data of March 14th was used for fourteen synoptic stations in the northwest of t...
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ژورنال
عنوان ژورنال: Mathematical and Computer Modelling
سال: 2007
ISSN: 0895-7177
DOI: 10.1016/j.mcm.2006.11.030