منابع مشابه
Constructability of Trip-lets
A trip-let is an object as shown on the cover of Hofstadter’s book Gödel, Escher, Bach: a solid, threedimensional object that, when viewed from three orthogonal directions, shows three different letters. In this paper we consider two problems related to the construction of such objects for a given set of three letters. First, we want to know whether the silhouettes of the object correspond to t...
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Existing type literature has conflicting views on desugaring polymorphic lets to lambda terms. The conflict arises because, in certain cases, desugaring does not preserve typing. We describe a transformation of polymorphic lets to monomorphic lets such that, when the monomorphic lets are desugared, the typing is preserved. Our transformation requires no changes to either term or type syntax. Th...
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The protection of biodiversity and of ecosystem services ought to be a top priority, taken into consideration in the course of all human activities, because we depend on it fully now and for the future. In this context, we note that the ecological problems related to the cultivation of GE crops fail to differ in any fundamental way from the ecological problems associated with agriculture in gen...
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10.1083/jcb.2011iti1jcb.2011iti1Mitch [email protected] g1.epsIn This IssueNewsFANCJ lets chromatin stay true S chwab et al. show how a protein that unkinks DNA might help cells to maintain chromatin organization during DNA replication. The DNA replication machinery can run into ...
متن کاملThe Leiden Thrombophilia Study (LETS).
Our study grew from an attempt to solve a controversy. In 1987 protein C antigen level was assessed in a large cohort of healthy blood donors (1). Subjects in this cohort who were heterozygous for protein C deficiency did not suffer from venous thromboembolism. Family studies in four of the protein C deficient individuals showed autosomal inheritance of the defect. These findings seemed in cont...
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ژورنال
عنوان ژورنال: Open Schools Journal for Open Science
سال: 2020
ISSN: 2623-3606
DOI: 10.12681/osj.23422