منابع مشابه
Site-Directed Mutagenesis Study
Structural elements of the rat 1.t-opioid receptor important in ligand receptor binding and selectivity were examined using a site-directed mutagenesis approach. Five single amino acid mutations were made, three that altered conserved residues in the ~ 8, and K receptors (Asn 15°t Ala, His297 to Ala, and Tyr326 to Phe) and wo de igned to test for ~i/8 selectivity (lie198 to Val and Va1202 to li...
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Developing and promoting self-directed learning, as an one of the goals in higher education is important because it expected from students to reach the high level of individual capabilities, and able to identify their training needs in order to fix it and evaluate their own learning, without being in a special education system. Conclusion: The literature review showed that self-directed learnin...
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In this paper we consider the class of directed acyclic graphs (DAGs), and present the results of an experimental study on four drawing algorithms speciically developed for DAGs. Our study is conducted on two large test suites of DAGs and yields more than 30 charts comparing the performance of the drawing algorithms with respect to several quality measures, including area, crossings, bends, and...
متن کاملMR-directed brain biopsy: feasibility study.
MR imaging can provide cross-sectional images in multiple imaging planes with equal resolution and improve localization of abnormal tissue over that afforded by CT [1, 2]. MRdirected biopsy of the body has already been safely performed [3]; however, MR-directed biopsy of the brain is potentially more difficult and risky because of the problems involved in identifying possible intracranial hemor...
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Introduction: In this study, we investigated the distraction power of the unusual and usual images on the attention of 20 healthy primary school children. Methods: Our study was different from previous ones in that the participants were asked to fix the initial position of their attention on a pre-defined location after being presented with unusual images as distractors. The goals were prese...
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ژورنال
عنوان ژورنال: The School Review
سال: 1919
ISSN: 0036-6773
DOI: 10.1086/437005