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  • Articles  (54)
  • Wiley  (21)
  • Springer Nature  (18)
  • American Chemical Society  (12)
  • Annual Reviews  (2)
  • Blackwell Publishing Ltd
  • 2010-2014  (28)
  • 2000-2004  (26)
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  • Articles  (54)
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  • 1
    Electronic Resource
    Electronic Resource
    TEMPORAL RESPONSES OF SURFACE-WATER AND GROUND-WATER TO PRECIPITATION IN ILLINOIS (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 37 (2001), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : Illinois data from 168 months (1986–1999) were investigated to determine the responses of surface-water and ground-water resources to precipitation. Such responses were generally within the month of occurrence or one to two months later, with recovery being reached another one to three months into the future, depending on season of the year. Although the drought of 1988 immediately impacted surface-water and ground-water resources, the time of recovery was substantially longer compared to those of individual dry months, generally continuing for several months. The extremely wet summer of 1993 resulted in elevated responses in water resources almost immediately, but in this instance continued through the following fall and winter, into the spring of 1994.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.2001.tb05503.x
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The Dynamic Life of Natural Killer Cells (2004)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Immunology 22 (2004), S. 405-429 
    Details
    ISSN: 0732-0582
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Notes: Natural killer (NK) cells play important roles in immunological processes, including early defense against viral infections. This review provides an overview of the dynamic in vivo life of NK cells from their development in the bone marrow to their mature peripheral responses and their ultimate demise, with particular emphasis on mouse NK cells and viral infections.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.immunol.22.012703.104711
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  • 3
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    Yeasts associated with plums and their potential for controlling brown rot after harvest (2014)
    Wiley
    In: Yeast
    Details
    Publication Date: 2014-03-29
    Description: Bacterial and yeast antagonists isolated from fruit surfaces have been effective in controlling various postharvest diseases and several microbial antagonists have been developed into commercial products. Our knowledge of the fruit microbial community with the exception of grapes, apples and some citrus fruit is rudimentary, and the potential of the resident yeasts for biocontrol remains largely unknown. We determined the occurrence of yeasts on plum surfaces during fruit development from the pre-hardening stage until harvest during two years. A total of 16 species from 13 genera were isolated. Species from three genera, basidiomycetes Rhodotorula (29.5%) and Sporidiobolus (24.7%) and the dimorphic ascomycete genus Aureobasidium (24.7%) constituted 78.7% of all isolations and were recovered throughout fruit development while Cryptococcus spp. constituted only 6.2% of the total plum isolates. The yeast community in the final sampling was significantly different from the first three samplings, reflecting a rapidly changing fruit habitat during the maturation of fruit. For example, Hanseniaspora , Pichia , Zygosaccharomyces , and Wickerhamomyces occurred only on the most mature fruit. Screening of the yeasts for antagonistic activity against Monilinia fructicola , a fungus that causes brown rot, revealed a range of biocontrol activities. Several isolates provided complete control of the decay on plums challenged with a pathogen suspension of 10 3 conidia/ mL, and more than 90% of control on fruit inoculated with the pathogen at a concentration 10 times higher. Some of the best antagonists included A . pullulans and R . phylloplana . Populations of both of these antagonists increased rapidly by several orders of magnitude in wounds of plums incubated at 24 ºC and 4 ºC. Our results indicate that plum surfaces harbor several yeast species with excellent potential for use in biological control of brown rot of stone fruits. This article is protected by copyright. All rights reserved.
    Print ISSN: 0749-503X
    Electronic ISSN: 1097-0061
    Topics: Biology
    Published by Wiley
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  • 4
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    Pollutant transport among California regions (2013)
    Wiley
    Details
    Publication Date: 2013-05-21
    Description: [1]  Several regions within California have significant air quality issues. Transport of pollutants emitted in one region to another region may add to the impact of local emissions. In this work, Lagrangian particle dispersion model simulations show the amounts of tracers that are transported within and among four regions, Southern California, the San Francisco Bay Area, the Central Valley, and the rest of the state. The simulations cover May and June of 2010, the CalNex experiment period. Tracers of automobile emissions and one type of agricultural emissions are used. Tracer mixing ratios are compared to airborne and ground-based measurements. The age of tracers in each location is also presented. Vertical profiles and diurnal cycles help to clarify the transport process. As is well known, Southern California emissions are transported to the east and affect the desert areas, and Bay Area automobile emissions are an important source of pollutants in the San Joaquin Valley. A novel result is that the Southern California Bight is filled with a mixture of well-aged carbon monoxide tracer from Southern California and the Bay Area. Air over the Bight is also affected by the agricultural emissions represented by the agricultural tracer, dominantly from the Central Valley where its sources are largest. There is no indication of transport from Southern California to the Central Valley. Emissions from the Central Valley do make their way to Southern California, as shown by the agricultural tracer, but automobile emissions from the Valley are insignificant in Southern California.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 5
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    Quantum control of hybrid nuclear–electronic qubits (2013)
    Springer Nature
    Details
    Publication Date: 2013-01-24
    Description: Nature Materials 12, 103 (2013). doi:10.1038/nmat3499 Authors: Gavin W. Morley, Petra Lueders, M. Hamed Mohammady, Setrak J. Balian, Gabriel Aeppli, Christopher W. M. Kay, Wayne M. Witzel, Gunnar Jeschke & Tania S. Monteiro Pulsed magnetic resonance allows the quantum state of electronic and nuclear spins to be controlled on the timescale of nanoseconds and microseconds respectively. The time required to flip dilute spins is orders of magnitude shorter than their coherence times, leading to several schemes for quantum information processing with spin qubits. Instead, we investigate ‘hybrid nuclear–electronic’ qubits consisting of near 50:50 superpositions of the electronic and nuclear spin states. Using bismuth-doped silicon, we demonstrate quantum control over these states in 32 ns, which is orders of magnitude faster than previous experiments using pure nuclear states. The coherence times of up to 4 ms are five orders of magnitude longer than the manipulation times, and are limited only by naturally occurring 29Si nuclear spin impurities. We find a quantitative agreement between our experiments and an analytical theory for the resonance positions, as well as their relative intensities and Rabi oscillation frequencies. These results bring spins in a solid material a step closer to research on ion-trap qubits.
    Print ISSN: 1476-1122
    Electronic ISSN: 1476-4660
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Natural Sciences in General , Physics
    Published by Springer Nature
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  • 6
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    Surface observations for monitoring urban fossil fuel CO2 emissions: minimum site location requirements for the Los Angeles megacity (2013)
    Wiley
    Details
    Publication Date: 2013-01-06
    Description: [1]  The contemporary global carbon cycle is dominated by perturbations from anthropogenic CO 2 emissions. One approach to identify, quantify, and monitor anthropogenic emissions is to focus on intensely emitting urban areas. In this study, we compare the ability of different CO 2 observing systems to constrain anthropogenic flux estimates in the Los Angeles megacity. We consider different observing system configurations based on existing observations and realistic near-term extensions of the current ad hoc network. We use a high-resolution regional model (STILT-WRF) to simulate different observations and observational network designs within and downwind of the Los Angeles basin. A Bayesian inverse method is employed to quantify the relative ability of each network to improve constraints on flux estimates. Ground-based column CO 2 observations provide useful complementary information to surface observations due to lower sensitivity to localized dynamics, but column CO 2 observations from a single site do not appear to provide sensitivity to emissions from the entire LA megacity. Surface observations from remote, down-wind sites contain weak, sporadic urban signals and are complicated by other source/sink impacts, limiting their usefulness for quantifying urban fluxes in LA. We find a network of 8 optimally located in-city surface observation sites provides the minimum sampling required for accurate monitoring of CO 2 emissions in LA, and present a recommended baseline network design. We estimate that this network can distinguish fluxes on 8 week time-scales and 10 km spatial scales to within ~12 g C m -2 d -1 (~10% of average peak fossil CO 2 flux in the LA domain).
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 7
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    Phase Diagram for Magnon Condensate in Yttrium Iron Garnet Film (2013)
    Springer Nature
    Details
    Publication Date: 2013-03-05
    Description: Recently, magnons, which are quasiparticles describing the collective motion of spins, were found to undergo Bose-Einstein condensation (BEC) at room temperature in films of Yttrium Iron Garnet (YIG). Unlike other quasiparticle BEC systems, this system has a spectrum with two degenerate minima, which makes it possible for the system to have two condensates in momentum space. Recent Brillouin Light Scattering studies for a microwave-pumped YIG film of thickness d = 5 μm and field H = 1 kOe find a low-contrast interference pattern at the characteristic wavevector Q of the magnon energy minimum. In this report, we show that this modulation pattern can be quantitatively explained as due to unequal but coherent Bose-Einstein condensation of magnons into the two energy minima. Our theory predicts a transition from a high-contrast symmetric state to a low-contrast non-symmetric state on varying the d and H, and a new type of collective oscillation. Scientific Reports 3 doi: 10.1038/srep01372
    Electronic ISSN: 2045-2322
    Topics: Natural Sciences in General
    Published by Springer Nature
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  • 8
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    Nitrous Oxide (N2O) Emissions from California based on 2010 CalNex Airborne Measurements (2013)
    Wiley
    Details
    Publication Date: 2013-01-19
    Description: [1]  Nitrous oxide (N 2 O) is an important gas for climate and for stratospheric chemistry, with a lifetime exceeding 100 years. Global concentrations have increased steadily since the 18 th century, apparently due to human-associated emissions, principally from the application of nitrogen fertilizers. However, quantitative studies of agricultural emissions at large spatial scales are lacking, inhibited by the difficulty of measuring small enhancements in atmospheric concentration. Here we derive regional emission rates for N 2 O in the agricultural heartland of California, based on analysis of in-situ airborne atmospheric observations collected using a new quantum cascade laser spectrometer. The data were obtained on board the NOAA WP-3 research aircraft during the CalNex (California Research at the Nexus of Air Quality and Climate Change) program in late spring, 2010. We coupled the WRF (Weather Research and Forecasting) model, a meso-scale meteorology model, with the STILT (Stochastic Time-Inverted Lagrangian Transport) model, a Lagrangian particle dispersion model, to link our in-situ airborne observations to surface emissions. We then used a variety of statistical methods to identify source areas and to optimize emission rates. Our results are consistent with the view that fertilizer application is the largest source of N 2 O in the Central Valley. The spatial distribution of surface emissions, based on California land use and activity maps, was very different than indicated in the leading emissions inventory (EDGAR 4.0). Our estimated total emission flux of N 2 O for California in May and June was 3–4 times larger than the annual mean given for the state by EDGAR and other inventories, indicating a strong seasonal variation. We estimated the statewide total annual emissions of N 2 O to be 0.042 ± 0.011 Tg N/yr, roughly equivalent to inventory values if we account for seasonal variations using observations obtained in the Midwestern United States. This state total N 2 O emission is 20.5 Tg CO 2 equivalent (100-year global warming potential (GWP) = 310 CO 2 eq/g N 2 O), accounting for approximately 4% of the state total greenhouse gas emissions.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 9
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    In vivo developmental stages in murine natural killer cell maturation (2002)
    Springer Nature
    Details
    Publication Date: 2002-05-13
    Print ISSN: 1529-2908
    Electronic ISSN: 1529-2916
    Topics: Biology , Medicine
    Published by Springer Nature
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  • 10
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    Functional interactions between dendritic cells and NK cells during viral infection (2002)
    Springer Nature
    Details
    Publication Date: 2002-12-23
    Print ISSN: 1529-2908
    Electronic ISSN: 1529-2916
    Topics: Biology , Medicine
    Published by Springer Nature
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