منابع مشابه
Ecological responses to experimental glacier-runoff reduction in alpine rivers
Glacier retreat is a worldwide phenomenon with important consequences for the hydrological cycle and downstream ecosystem structure and functioning. To determine the effects of glacier retreat on aquatic communities, we conducted a 4-year flow manipulation in a tropical glacier-fed stream. Compared with an adjacent reference stream, meltwater flow reduction induces significant changes in benthi...
متن کاملLithophagia: pebbles in and pebbles out.
Fig. 1 : X-ray abdomen of the patient showing pebbles in rectum and the anal canal 35 year old male patient hailing from Sivani, madhya Pradesh had come with complaints of passing watery stools, dull aching pain in the abdomen since 10 to 15 days. Patient had been a case of mental retardation since childhood. he was noticed passing pebbles along with passage of watery stools. On further enquiry...
متن کاملFlipping Pebbles
We are trying to understand exactly how complicated these orbits are. A moment’s thought reveals that the toggle operation is reversible, so the orbit of any sequence must be a cycle. A few computational experiments suggest that the length of the cycle associated with a sequence of length n is about 2 and thus has exponential length. This leads to a natural computational question that we will r...
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15 صفحه اولThe Game of Blocking Pebbles
Graph Pebbling is a well-studied single-player game on graphs. We introduce the game of blocking pebbles which adapts Graph Pebbling into a two-player strategy game in order to examine it within the context of Combinatorial Game Theory. Positions with game values matching all integers, all nimbers, and many infinitesimals and switches are found.
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ژورنال
عنوان ژورنال: Geological Magazine
سال: 1888
ISSN: 0016-7568,1469-5081
DOI: 10.1017/s0016756800194336