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We construct infinitesimally rigid bipartite unit-bar frameworks in $$\mathbb {R}^d$$ R d . Our constructions are variants of the knight’s graph. This answers problems proposed by Maehara.
An important question is how to determine if a person is exhibiting suicidal tendencies in behavior, speech, or writing. This paper demonstrates a method of analyzing written material to determine whether or not a person is suicidal. The method involves an analysis of word frequencies that are used in a fuzzy cognitive map. The fuzzy cognitive map determines if there are suicidal tendencies. The method...
Here we report the first discovery of adenosine 5′-phosphosulfate reductase (APR), a key enzyme of the sulfate reduction pathway, in the methanarchaeon Methanocaldococcus jannaschii. While the sulfate reduction pathway is present in other organisms, it is not expected to exist in methanarchaea because their habitats often already possess an abundance of reduced sulfur, particularly H 2 S....
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