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  • 1
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    In:  Geophys. J. Int., Leipzig, 3-4, vol. 128, no. 3, pp. 701-707, pp. L19606, (ISBN: 0-12-018847-3)
    Publication Date: 1997
    Keywords: Seismology ; Nuclear explosion ; Source parameters ; Detectors ; GJI
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  • 2
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    In:  Bull. Seism. Soc. Am., Leipzig, 3-4, vol. 89, no. 5, pp. 1390-1394, pp. L19606, (ISBN: 0-12-018847-3)
    Publication Date: 1999
    Keywords: Seismology ; seismic Moment ; Moment tensor ; BSSA
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  • 3
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    In:  Geophys. J. Int., Leipzig, 3-4, vol. 150, no. 1, pp. 153-161, pp. L19606, (ISBN: 0-12-018847-3)
    Publication Date: 2002
    Keywords: Nuclear explosion ; Seismology ; Earthquake ; Magnitude ; P-waves ; Discrimination ; GJI
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  • 4
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    In:  Pageoph, Leipzig, 3-4, vol. 159, no. 4, pp. 803-830, pp. L19606, (ISBN: 0-12-018847-3)
    Publication Date: 2002
    Keywords: Discrimination ; Mining geophysics ; Teleseismic events ; P-waves ; Seismology ; Nuclear explosion ; Induced seismicity ; Rock bursts (see also ERDSTOSS and GEBIRGSSCHLAG) ; PAG
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  • 5
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    In:  Bull. Seism. Soc. Am., Luxembourg, Deutsche Geophys. Gesellschaft, vol. 95, no. 1, pp. 197-211, pp. B09316, (ISSN: 1340-4202)
    Publication Date: 2005
    Keywords: Seismology ; Earthquake ; China ; Discrimination ; Nuclear explosion ; CTBT ; Magnitude ; BSSA
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  • 6
    Publication Date: 2013-06-28
    Description: Although the right-handed double helical B-form DNA is most common under physiological conditions, DNA is dynamic and can adopt a number of alternative structures, such as the four-stranded G-quadruplex, left-handed Z-DNA, cruciform and others. Active transcription necessitates strand separation and can induce such non-canonical forms at susceptible genomic sequences. Therefore, it has been speculated that these non-B DNA motifs can play regulatory roles in gene transcription. Such conjecture has been supported in higher eukaryotes by direct studies of several individual genes, as well as a number of large-scale analyses. However, the role of non-B DNA structures in many lower organisms, in particular proteobacteria, remains poorly understood and incompletely documented. In this study, we performed the first comprehensive study of the occurrence of B DNA–non-B DNA transition-susceptible sites (non-B DNA motifs) within the context of the operon structure of the Escherichia coli genome. We compared the distributions of non-B DNA motifs in the regulatory regions of operons with those from internal regions. We found an enrichment of some non-B DNA motifs in regulatory regions, and we show that this enrichment cannot be simply explained by base composition bias in these regions. We also showed that the distribution of several non-B DNA motifs within intergenic regions separating divergently oriented operons differs from the distribution found between convergent ones. In particular, we found a strong enrichment of cruciforms in the termination region of operons; this enrichment was observed for operons with Rho-dependent, as well as Rho-independent terminators. Finally, a preference for some non-B DNA motifs was observed near transcription factor-binding sites. Overall, the conspicuous enrichment of transition-susceptible sites in these specific regulatory regions suggests that non-B DNA structures may have roles in the transcriptional regulation of specific operons within the E. coli genome.
    Print ISSN: 0305-1048
    Electronic ISSN: 1362-4962
    Topics: Biology
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  • 7
    Publication Date: 2012-02-01
    Description: The ratio of body-wave to surface-wave magnitude, mb:Ms, has historically been one of the most effective methods for distinguishing earthquakes from underground explosions. In the context of the Comprehensive Nuclear-Test-Ban Treaty (CTBT), mb:Ms is currently one of the experimental standard event-screening criteria being provisionally tested at the International Data Centre (IDC). An event in the IDC analyst-reviewed bulletin is screened out if the hypothesis that it is an underground explosion can be rejected with high confidence.Recently, two announced nuclear tests by the Democratic People’s Republic of Korea have raised interest because the Ms values for these explosions are high compared to historical explosions with similar mb. On an mb:Ms plot, both explosions lie close to the contemporary IDC experimental screening line, Ms=1.25mb-2.2. Although neither explosion was screened out by the IDC, the two explosions indicate that a revision of the line is advisable to ensure with high confidence that any future underground nuclear explosion is not screened out.Here, mb and Ms magnitudes for 409 past underground nuclear explosions are collated and presented. The magnitudes include new measurements, an archive of historical measurements made over the years at AWE Blacknest, and a reworking of bulletin data. The revised mb:Ms screening line based on these magnitudes is Ms=mb-0.64. The effect of the revised line on event screening at the IDC is assessed. It is found that the new criterion screens out 42% of a set of events from 2008, whereas the old criterion screened out 87%, which is a large reduction. The revised provisional mb:Ms screening line was agreed upon by the Waveform Expert Group at Working Group B of the CTBT Preparatory Commission in February 2010 and has been tested in operations at the IDC since 3 June 2010.
    Print ISSN: 0037-1106
    Electronic ISSN: 1943-3573
    Topics: Geosciences , Physics
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  • 8
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1982-10-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bowers, M D -- New York, N.Y. -- Science. 1982 Oct 8;218(4568):150.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17753442" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 1989-03-03
    Description: Little is known about the effects of enriched CO(2) atmospheres, which may exist in the next century, on natural plant-insect herbivore interactions. Larvae of a specialist insect herbivore, Junonia coenia (Lepidoptera: Nymphalidae), were reared on one of its host plants, Plantago lanceolata (Plantaginaceae), grown in either current low (350 parts per million) or high (700 ppm) CO(2) environments. Those larvae raised on high-CO(2) foliage grew more slowly and experienced greater mortality, especially in early instars, than those raised on low-CO(2) foliage. Poor larval performance on high-CO(2) foliage was probably due to the reduced foliar water and nitrogen concentrations of those plants and not to changes in the concentration of the defensive compounds, iridoid glycosides. Adult pupal weight and female fecundity were not affected by the CO(2) environment of the host plant. These results indicate that interactions between plants and herbivorous insects will be modified under the predicted CO(2) conditions of the 21st century.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fajer, E D -- Bowers, M D -- Bazzaz, F A -- New York, N.Y. -- Science. 1989 Mar 3;243(4895):1198-200.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17799901" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. Diamond-Blackfan anemia (DBA) is a rare constitutional erythroblastopenia characterized by a specific defect in erythroid differentiation. Recently, mutations in the gene encoding ribosomal protein (RP) S19 were found in a subset of patients with the disease. To characterize further RPS19 mutations and to investigate genotype–phenotype relationships, we screened this gene for mutations in patients with DBA by direct sequencing and Southern-blot analysis. Four novel mutations were identified. A G120A nonsense mutation resulting in a stop at codon 33, a C302T nonsense mutation introducing a premature stop at codon 84, and a 327delG which results in a frame shift at codon 103. A fourth and more complex mutation (TT157–158AA, 160insCT) resulting in a Leu45Gln and a frame shift from codon 47 was found in three affected family members with variable phenotypes. The different clinical expression for identical mutations suggest the presence of other modulating factors for the disease. The mutations presented here further support the role of RPS19 in erythropoietic differentiation and proliferation.
    Type of Medium: Electronic Resource
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