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  • 1
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    The 17 May 2013 M 4.6 Ladysmith, Quebec, Earthquake (2015)
    Seismological Society of America (SSA)
    Details
    Publication Date: 2015-03-05
    Description: Although moderate in size ( M N  5.2, M  4.6), the earthquake that occurred near Ladysmith, Quebec, on 17 May 2013 was one of the best-recorded earthquakes to have occurred in eastern Canada in recent years due to the fortuitous deployment of U.S. Transportable Array stations in a region that was already well covered by the Canadian National Seismograph Network. This data set allowed us to study the earthquake and its aftershocks in better detail than we could have done in the past. Moment tensor and first-motion focal mechanisms suggest that it was a typical western Quebec earthquake resulting from thrust faulting on a northwest-striking plane. Several methods were used to determine the depth, all indicating a depth of 12–15 km. The aftershock sequence, which included a magnitude 4.1 ( M N ) earthquake occurring 10 min after the mainshock, was relatively rich in M N 〉3.0 events and contrasts sharply with that of the 2010 Val-des-Bois earthquake (also in western Quebec). Strong-motion data from the Ladysmith earthquake contributed to an ongoing study to model soft soil amplification and basin effects. The earthquake was felt to distances in excess of 500 km, and more than 4300 people filled out an online "Did You Feel It?" survey, providing a detailed picture of macroseismic effects. Visits to Ladysmith and nearby communities found evidence for minor damage confined to the epicentral area. It is difficult to correlate the Ladysmith sequence with any known faults in the region, but it is noted that some local-scale lineaments in the epicentral area trend subparallel to the nodal planes of the focal mechanism.
    Print ISSN: 0895-0695
    Electronic ISSN: 1938-2057
    Topics: Geosciences
    Published by Seismological Society of America (SSA)
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  • 2
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    Observations of mine seismicity in the Eastern Wasatch Plateau, Utah, USA: A possible case of implosional failure (1989)
    In:  Pageoph, Köln, Elsevier, vol. 128, no. 16, pp. 369-405, pp. 1015, (ISSN: 1340-4202)
    Details
    Publication Date: 1989
    Keywords: Seismology ; Seismicity ; Source ; Rock bursts (see also ERDSTOSS and GEBIRGSSCHLAG)
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    The Genome Sequence of Saccharomyces eubayanus and the Domestication of Lager-Brewing Yeasts (2015)
    Oxford University Press
    Details
    Publication Date: 2015-10-18
    Description: The dramatic phenotypic changes that occur in organisms during domestication leave indelible imprints on their genomes. Although many domesticated plants and animals have been systematically compared with their wild genetic stocks, the molecular and genomic processes underlying fungal domestication have received less attention. Here, we present a nearly complete genome assembly for the recently described yeast species Saccharomyces eubayanus and compare it to the genomes of multiple domesticated alloploid hybrids of S. eubayanus x S. cerevisiae ( S. pastorianus syn. S. carlsbergensis ), which are used to brew lager-style beers. We find that the S. eubayanus subgenomes of lager-brewing yeasts have experienced increased rates of evolution since hybridization, and that certain genes involved in metabolism may have been particularly affected. Interestingly, the S. eubayanus subgenome underwent an especially strong shift in selection regimes, consistent with more extensive domestication of the S. cerevisiae parent prior to hybridization. In contrast to recent proposals that lager-brewing yeasts were domesticated following a single hybridization event, the radically different neutral site divergences between the subgenomes of the two major lager yeast lineages strongly favor at least two independent origins for the S. cerevisiae x S. eubayanus hybrids that brew lager beers. Our findings demonstrate how this industrially important hybrid has been domesticated along similar evolutionary trajectories on multiple occasions.
    Print ISSN: 0737-4038
    Electronic ISSN: 1537-1719
    Topics: Biology
    Published by Oxford University Press
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  • 4
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    Diurnal patterns of water use in Eucalyptus victrix indicate pronounced desiccation-rehydration cycles despite unlimited water supply (2011)
    Oxford University Press
    Details
    Publication Date: 2011-11-24
    Description: Knowledge about nocturnal transpiration ( E night ) of trees is increasing and its impact on regional water and carbon balance has been recognized. Most of this knowledge has been generated in temperate or equatorial regions. Yet, little is known about E night and tree water use ( Q ) in semi-arid regions. We investigated the influence of atmospheric conditions on daytime ( Q day ) and nighttime water transport ( Q night ) of Eucalyptus victrix L.A.S. Johnson & K.D. Hill growing over shallow groundwater (not 〉1.5 m in depth) in semi-arid tropical Australia. We recorded Q day and Q night at different tree heights in conjunction with measurements of stomatal conductance ( g s ) and partitioned E night from refilling processes. Q of average-sized trees (200–400 mm diameter) was 1000–3000 l month –1 , but increased exponentially with diameter such that large trees (〉500 mm diameter) used up to 8000 l month –1 . Q was remarkably stable across seasons. Water flux densities ( J s ) varied significantly at different tree heights during day and night. We show that g s remained significantly different from zero and E night was always greater than zero due to vapor pressure deficits ( D ) that remained 〉1.5 kPa at night throughout the year. Q night reached a maximum of 50% of Q day and was 〉0.03 mm h –1 averaged across seasons. Refilling began during afternoon hours and continued well into the night. Q night eventually stabilized and closely tracked D night . Coupling of Q night and D night was particularly strong during the wet season ( R 2 = 0.95). We suggest that these trees have developed the capacity to withstand a pronounced desiccation–rehydration cycle in a semi-arid environment. Such a cycle has important implications for local and regional hydrological budgets of semi-arid landscapes, as large nighttime water fluxes must be included in any accounting.
    Print ISSN: 0829-318X
    Electronic ISSN: 1758-4469
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Oxford University Press
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  • 5
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    The enzymic nature of antibody catalysis: development of multistep kinetic processing (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-11-23
    Description: Detailed kinetic investigations of a catalytic antibody that promotes the hydrolyses of an anilide and phenyl ester show that this catalyst uses a multistep kinetic sequence resembling that found in serine proteases to hydrolyze its substrates, although antibody was elicited to a single transition-state analog. Like the serine proteases the antibody catalyzes the hydrolysis reactions through a putative covalent intermediate, but unlike the enzymes it may use hydroxide ion to cleave the intermediates. Nevertheless, the antibody is a potent catalyst with turnover at higher pH values rivaling that of chymotrypsin. This analysis also reveals that turnover by the antibody is ultimately limited by product desorption, suggesting that improvements in catalytic efficiency may be achieved by judicious changes in the structure of the substrate, so that it is not superimposable on that of the eliciting hapten.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Benkovic, S J -- Adams, J A -- Borders, C L Jr -- Janda, K D -- Lerner, R A -- GM4385801/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1990 Nov 23;250(4984):1135-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Pennsylvania State University, Department of Chemistry, University Park 16802.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2251500" target="_blank"〉PubMed〈/a〉
    Keywords: Acylation ; Aniline Compounds/metabolism ; Antibodies/*metabolism ; Catalysis ; Enzymes/*metabolism ; Hydrogen-Ion Concentration ; Hydrolysis ; Kinetics ; Nitrophenols/metabolism ; Spectrometry, Fluorescence ; Thermodynamics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    Resource availability and life-history origin affect competitive behavior in territorial disputes (2016)
    Oxford University Press
    Details
    Publication Date: 2016-03-19
    Description: Partial migration, in which some individuals of a population migrate and others remain sedentary, is a phenomenon that occurs across a wide range of taxa, but the factors that predispose particular individuals to one or the other strategy are usually unknown. Brown trout ( Salmo trutta ) initially compete for feeding territories in freshwater streams, but while some individuals remain resident in fresh water throughout their lives, others undertake an anadromous migration. Because one of the drivers for migration is the relative rates of resource acquisition in different habitats, we compared the ability of juvenile offspring from freshwater-resident and anadromous parents to compete for feeding territories; we also tested how this depended on the quality of the environment previously experienced. Brown trout derived from freshwater-resident or anadromous parents were reared for ~7 months under high-, mid-, or low-food regimes and were then induced to compete for feeding territories in a seminatural stream channel. We found that the parental type had a significant effect on dominance status in territorial interactions, with offspring of anadromous fish being dominant over size-matched offspring of freshwater residents, but only when both had been raised under intermediate levels of food availability. The results suggest that the migration strategy of the parents interacts with the environmental conditions experienced by the offspring to potentially influence its motivation to compete for feeding territories and hence its probability of migration.
    Print ISSN: 1045-2249
    Electronic ISSN: 1465-7279
    Topics: Biology
    Published by Oxford University Press
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  • 7
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    Nephron progenitor compartments [Developmental Biology] (2013)
    National Academy of Sciences
    Details
    Publication Date: 2013-03-20
    Description: Embryonic nephron progenitor cells are segregated in molecularly distinct compartments of unknown function. Our study reveals an integral role for bone morphogenetic protein-SMAD in promoting transition of progenitors from the primitive Cbp/p300-interacting transactivator 1 expressing (CITED1+) compartment to the uniquely sine oculis-related homeobox 2 expressing (SIX2-only) compartment where they become...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 8
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    Atmospheric carbon dioxide, the southern oscillation, and the weak 1975 el nino (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-10-03
    Description: The observed rate of change of the atmospheric carbon dioxide concentration at the South Pole, Fanning Island, Hawaii, and ocean weather station P correlates with an index of the southern oscillation and with El Nino occurrences. There are changes at all four stations that seem to be in response to the weak 1975 El Nino. Thus, even poorly developed El Nino events may affect the atmospheric carbon dioxide concentration.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bacastow, R B -- Adams, J A -- Keeling, C D -- Moss, D J -- Whorf, T P -- Wong, C S -- New York, N.Y. -- Science. 1980 Oct 3;210(4465):66-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17751153" 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
    Published by American Association for the Advancement of Science (AAAS)
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  • 9
    Electronic Resource
    Electronic Resource
    Fluorometric and Colorimetric Microdetermination of Uranium in Rocks and Minerals (1954)
    s.l. : American Chemical Society
    Analytical chemistry 26 (1954), S. 1635-1639 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60094a029
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Abundance of Radioactive Elements in Crystalline Shield Rocks (1967)
    [s.l.] : Nature Publishing Group
    Nature 214 (1967), S. 1002-1003 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The abundances of thorium, uranium and potassium in. most of the composites the preparation of which has been described1 were determined by J. A. S. Adams3, and the results of these determinations have been used to calculate the averages given in Table 1. The area numbers in the table refer to the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2141002a0
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