منابع مشابه
Snow metamorphism: A fractal approach.
Snow is a porous disordered medium consisting of air and three water phases: ice, vapor, and liquid. The ice phase consists of an assemblage of grains, ice matrix, initially arranged over a random load bearing skeleton. The quantitative relationship between density and morphological characteristics of different snow microstructures is still an open issue. In this work, a three-dimensional fract...
متن کاملMetamorphism, Formal Grammars and Undecidable Code Mutation
This paper presents a formalisation of the different existing code mutation techniques (polymorphism and metamorphism) by means of formal grammars. While very few theoretical results are known about the detection complexity of viral mutation techniques, we exhaustively address this critical issue by considering the Chomsky classification of formal grammars. This enables us to determine which fa...
متن کاملHimalayan Metamorphism and Its Tectonic Implications
The Himalayan range exposes a spectacular assemblage of metamorphic rocks from the midand deep crust that have fostered numerous models of how the crust responds to continental collisions. Recent petrogenetically based petrologic and geochronologic studies elucidate processes with unprecedented resolution and critically test models that range from continuum processes to one-time events. The pro...
متن کاملRheology
researchers write. So, during the dry season, the entire population is represented by developing eggs that incubate for 8–9 months, before hatching synchronously at the beginning of the following rainy season. “Remarkably, this chameleon spends more of its short annual life cycle inside the egg than outside it,” they report. The authors reviewed data on the life cycle of more than 1,700 tetrapo...
متن کاملMetamorphism and Melting in an “unmetamorphosed” Mesosiderite
Introduction: The mesosiderites are amongst the most enigmatic of all the meteorite groups and their formation is not fully understood. Evidence taken from both the metal and silicate portions indicates that they have a multi-stage formation history [1,2]: 1. Initial crystallization and cooling of silicates, followed by brecciation on the surface of the parent body 2. Metal-silicate mixing, som...
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ژورنال
عنوان ژورنال: Journal of Geography (Chigaku Zasshi)
سال: 1988
ISSN: 0022-135X,1884-0884
DOI: 10.5026/jgeography.97.3_221