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  • 1
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    CeCaFDB: a curated database for the documentation, visualization and comparative analysis of central carbon metabolic flux distributions explored by 13C-fluxomics (2015)
    Oxford University Press
    Details
    Publication Date: 2015-01-16
    Description: The Central Carbon Metabolic Flux Database (CeCaFDB, available at http://www.cecafdb.org ) is a manually curated, multipurpose and open-access database for the documentation, visualization and comparative analysis of the quantitative flux results of central carbon metabolism among microbes and animal cells. It encompasses records for more than 500 flux distributions among 36 organisms and includes information regarding the genotype, culture medium, growth conditions and other specific information gathered from hundreds of journal articles. In addition to its comprehensive literature-derived data, the CeCaFDB supports a common text search function among the data and interactive visualization of the curated flux distributions with compartmentation information based on the Cytoscape Web API, which facilitates data interpretation. The CeCaFDB offers four modules to calculate a similarity score or to perform an alignment between the flux distributions. One of the modules was built using an inter programming algorithm for flux distribution alignment that was specifically designed for this study. Based on these modules, the CeCaFDB also supports an extensive flux distribution comparison function among the curated data. The CeCaFDB is strenuously designed to address the broad demands of biochemists, metabolic engineers, systems biologists and members of the -omics community.
    Print ISSN: 0305-1048
    Electronic ISSN: 1362-4962
    Topics: Biology
    Published by Oxford University Press
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  • 2
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    A 550,000-year record of East Asian monsoon rainfall from 10Be in loess (2018)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2018-05-25
    Description: Cosmogenic 10 Be flux from the atmosphere is a proxy for rainfall. Using this proxy, we derived a 550,000-year-long record of East Asian summer monsoon (EASM) rainfall from Chinese loess. This record is forced at orbital precession frequencies, with higher rainfall observed during Northern Hemisphere summer insolation maxima, although this response is damped during cold interstadials. The 10 Be monsoon rainfall proxy is also highly correlated with global ice-volume variations, which differs from Chinese cave 18 O, which is only weakly correlated. We argue that both EASM intensity and Chinese cave 18 O are not governed by high-northern-latitude insolation, as suggested by others, but rather by low-latitude interhemispheric insolation gradients, which may also strongly influence global ice volume via monsoon dynamics.
    Keywords: Atmospheric Science
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Mineral Potential Mapping in an Accreted Island-Arc Setting Using Aeromagnetic Data: An Example from Southwest Alaska (2017)
    Society of Economic Geologists (SEG)
    Details
    Publication Date: 2017-02-08
    Description: The distribution of volcanogenic massive sulfide (VMS), porphyry-epithermal, Alaska-type ultramafic-mafic complexes, intrusion-related Au, and granitoid Sn-W ore deposits in southwest Alaska supports current metallogenic models linking the formation of these deposit types to the emplacement of different suites of igneous rocks during the evolution of this convergent plate margin. Regional-scale aeromagnetic data provide a continuous set of observations over the deposits and show contrasting patterns over the igneous rock suites hosting the various deposit types. Combined with surface geologic data and regional metallogenic constraints, aeromagnetic data—filtered to enhance the anomalous magnetic field and map magnetic domains—were used to produce a mineral potential map across this accreted island-arc setting. The reduced-to-pole, upward continuation, and total horizontal gradient transform maps show anomalies that could represent porphyry-epithermal deposits within the intraoceanic- and continental-arc terranes. The tilt derivative transform highlights lineaments within the back arc that may represent zones with potential for VMS deposits. The truncations of tilt derivative lineaments outline a major magnetic domain boundary between the back-arc and craton margin, which is prospective for granitoid Sn-W deposits. Annular tilt derivative highs outline granitoids that could be associated with intrusion-related Au deposits within the craton margin. Shallow, magnetite-rich Alaska-type ultramafic-mafic complexes are mapped by their short-wavelength, high-amplitude anomalies. Successful mineral potential mapping across southwestern Alaska as performed in the present study suggests that filtered aeromagnetic data can be effectively used in mineral exploration in convergent continental margin settings.
    Print ISSN: 0361-0128
    Topics: Geosciences
    Published by Society of Economic Geologists (SEG)
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  • 4
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    Focal mechanism dependence of static stress triggering of earthquakes (2004)
    In:  Tectonophysics, Washington, D.C., AGU, vol. 390, no. 1-4, pp. 235-243, pp. B05204, (ISSN: 1340-4202)
    Details
    Publication Date: 2004
    Keywords: Fault plane solution, focal mechanism ; Stress ; Coulomb ; Earthquake hazard
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Mapping of P-wave slab anomalies beneath the Tonga, Kermadec and New Hebrides arcs (1990)
    In:  Phys. Earth Plan. Int., Kunming, China, 3-4, vol. 61, no. 3, pp. 199-229, pp. B05301, (ISSN: 1340-4202)
    Details
    Publication Date: 1990
    Keywords: Plate tectonics ; Seismology ; PEPI
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    Direct inversion of velocity interfaces (2004)
    In:  Geophys. Res. Lett., Kunming, China, 3-4, vol. 31, no. 7, pp. 1-5, pp. L07612, (ISSN: 1340-4202)
    Details
    Publication Date: 2004
    Description: Seismic tomography traditionally inverts for velocity field on a regularly spaced and fixed-in-space model grid. Such an approach is not able to adequately describe pinchouts or wedge-shaped velocities as commonly seen at basin boundaries, faulted rock beds, and back-arc mantle wedges. A regularly spaced model grid also requires the use of a large number of model variables. This paper shows a different approach called deformable layer tomography (DLT) to directly invert for velocity interfaces. The use of thickness-varying layers allows a much smaller number of model variables for the DLT than the regularly spaced model grid. In the DLT the geologic framework and known velocity range are adopted into the initial reference model, and the best-data-fitting geometry of the velocity interfaces is determined, as illustrated by synthetic and field data examples.
    Keywords: Seismics (controlled source seismology) ; Applied geophysics ; Layers ; Velocity analysis ; Modelling ; 0915 ; Exploration ; Geophysics: ; Downhole ; methods ; 0935 ; Seismic ; methods ; 3260 ; Mathematical ; Geophysics: ; Inverse ; theory ; 7260 ; Seismology: ; Theory ; and ; modeling ; GLR
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    BIBLIOGRAPHY SEISMOLOGY
  • 7
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    Observations on earthquake stress axes and seismic morphology of deep slabs (1990)
    In:  Geophys. J. Int., Kunming, China, 3-4, vol. 103, no. 3, pp. 377-401, pp. B05301, (ISSN: 1340-4202)
    Details
    Publication Date: 1990
    Keywords: Fault plane solution, focal mechanism ; Stress ; Subduction zone ; GJI
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    BIBLIOGRAPHY SEISMOLOGY
  • 8
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    Field study of a highly active fault zone: The Xianshuihe fault of southwestern China (1987)
    In:  Oslo
    Details
    Publication Date: 1987
    Keywords: Geol. aspects ; Earthquake precursor: prediction research ; Fault zone
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    BIBLIOGRAPHY SEISMOLOGY
  • 9
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    Comparisons of Different Suction Control Techniques by Water Retention Curves: Theoretical and Experimental Studies (2015)
    Soil Science Society of America (SSSA)
    Details
    Publication Date: 2015-09-23
    Description: The axis-translation (ATT), osmotic (OMT), and vapor equilibrium (VET) techniques are widely used suction control techniques for investigating the hydraulic and mechanical behavior of unsaturated soils in the vadose zone. Yet there is still debate in the literature regarding their validity and consistency. In this study, four purposely designed experiments were carried out to measure the water retention curves (WRCs) of a compacted silty sand at different densities using the ATT and OMT. The four WRCs obtained from this study, together with extensive existing data published in the literature, were then analyzed using newly derived thermodynamic equations. The aim and novelty of this study were to apply the thermodynamic theory to verify and explain the validity and consistency of WRCs obtained by the three commonly used experimental techniques. By allowing for some possible experimental errors, the analyzed results reveal that the WRCs obtained from the three techniques are remarkably consistent. These consistent results can be explained by the derived thermodynamic equations, which illustrate that the final soil water content at the thermodynamic equilibrium state should be the same regardless of the suction control technique used, even though the techniques involve different processes of moisture exchange.
    Electronic ISSN: 1539-1663
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Soil Science Society of America (SSSA)
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  • 10
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    Observation of the anisotropic Dirac cone in the band dispersion of 112-structured iron-based superconductor Ca0.9La0.1FeAs2 (2016)
    American Institute of Physics (AIP)
    Details
    Publication Date: 2016-07-30
    Description: CaFeAs 2 is a parent compound of recently discovered 112-type iron-based superconductors. It is predicted to be a staggered intercalation compound that naturally integrates both quantum spin Hall insulating and superconducting layers and an ideal system for the realization of Majorana modes. We performed a systematical angle-resolved photoemission spectroscopy and first-principles calculation study of the slightly electron-doped CaFeAs 2 . We found that the zigzag As chain of 112-type iron-based superconductors play a considerable role in the low-energy electronic structure, resulting in the characteristic Dirac-cone like band dispersion as the prediction. Our experimental results further confirm that these Dirac cones only exist around the X but not Y points in the Brillouin zone, breaking the S 4 symmetry at iron sites. Our findings present the compelling support to the theoretical prediction that the 112-type iron-based superconductors might host the topological nontrivial edge states. The slightly electron doped CaFeAs 2 would provide us a unique opportunity to realize and explore Majorana fermion physics.
    Print ISSN: 0003-6951
    Electronic ISSN: 1077-3118
    Topics: Physics
    Published by American Institute of Physics (AIP)
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