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  • 1
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    Seasonal Forecasts, Climatic Change and Human Health : Health and Climate (2008)
    Springer
    Details
    Keywords: Assessment ; Malaria ; Public Health ; Scale ; Weather ; climate change ; public health policy ; temperature
    Description / Table of Contents: Awareness that many key aspects of public health are strongly influenced by climate is growing dramatically, driven by new research and experience and fears of climate change and the research needed to underpin policy developments in area is growing rapidly . This awareness has yet to translate into a practical use of climate knowledge by health policy-makers. Evidence based policy and practice is the mantra of the health sector. If climate scientists are to contribute effectively to health policy at local and global scales then careful empirical studies must be undertaken – focused on the needs of the public health policy and decision-makers. Results presented at the Wengen conference make clear that the science and art of integrating climate knowledge into the control of climate sensitive diseases on a year to year time frame as well as careful assessments of the potential impacts of climate change on health outcomes over longer time frames is advancing rapidly on many fronts. This includes advances in the empirical understanding of mechanisms, methodologies for modeling future impacts, new partnership developments between the health and climate community along with access to relevant data resources, and education and training. In a rapidly evolving field this book provides a snapshot of these emerging themes.
    Pages: Online-Ressource (X, 232 pages)
    ISBN: 9781402068775
    URL: https://doi.org/10.1007/978-1-4020-6877-5
    Language: English
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    E-BOOK
  • 2
    Electronic Resource
    Electronic Resource
    Improvements to Griggs-type apparatus for mechanical testing at high pressures and temperatures (1993)
    Springer
    Pure and applied geophysics 141 (1993), S. 523-543 
    Details
    ISSN: 1420-9136
    Keywords: Pressure ; temperature ; stress ; measurement ; acoustic emissions ; deformation ; techniques
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract New and improved techniques and apparatus for testing the mechanical properties of materials at high presures and temperatures are described. These include an improved Griggs-type deformation apparatus designed to operate to 5 GPa and associated servo-controlled hydraulic drive and electronics, the design of hydrostatic (molten alkali halide mixtures) pressure assemblies to measure flow stresses as low as a few MPa, the characterization of temperature gradients and friction in such assemblies, measurement of the melting curve of an alkali halide mixture used as a confining pressure medium, and the measurement of acoustic emissions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00998344
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  • 3
    Electronic Resource
    Electronic Resource
    Nest structure and colony cycle of the Allegheny mound ant,Formica exsectoides Forel (Hymenoptera: Formicidae) (1992)
    Springer
    Insectes sociaux 39 (1992), S. 385-402 
    Details
    ISSN: 1420-9098
    Keywords: Formica exsectoides ; nests ; colony cycle ; temperature ; brood ; reproductives
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The nest structure and colony cycle of a population of Allegheny mound ants,Formica exsectoides, were examined in central Michigan. The dispersion pattern of mounds was random. Nest structure and presence of brood were primarily determined by excavation of twenty-three nests over three intervals from June through September. Additional excavations of five nests in 1990 and ten nests in 1991 provided further details on nest structure and colony cycle. Most galleries occurred within the mound and upper 30 cm of soil, but some activity reached depths of 100 to 270 cm. Depth of nests showed little correlation with external measurements of height and diameter. Immature stages were recovered from two strata: the upper 20 cm of nest and mound and the lowest nest depths. Alate sexual forms were found in or near the mound in July, and numerous dealate queens were collected in September from peripheral galleries near the soil surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01240623
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  • 4
    Electronic Resource
    Electronic Resource
    Environmental influences on male production and social structure inHalictus rubicundus (Hymenoptera: Halictidae) (1993)
    Springer
    Insectes sociaux 40 (1993), S. 169-180 
    Details
    ISSN: 1420-9098
    Keywords: Halictidae ; sociality ; demography ; photoperiod ; temperature
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Several years' observations of population of a primitively social halictine bee,Halictus rubicundus, revealed the following: (1) there is a correlation between ambient temperatures during the spring provisioning phase and the sex ratio of the resulting brood, such that warmer temperatures are associated with an increase in male bias; (2) over the course of the season, the degree of male bias of eggs laid appears to correspond with photoperiod; and (3) increasing male bias in the first brood is associated with decreasing proportions of social colonies formed in the population, and this effect may be accentuated by small population size. These phenomena suggest that abiotic environmental conditions at the time of brood production may profoundly influence the demography of this population, and that the demography in turn determines the degree to which sociality is expressed. These findings are related to hypotheses dealing with caste determination in temperate halictine bees, viewed in the context of the evolution and maintenance of sociality, and it is proposed that these phenomena reveal a mechanism by which social behavior (the occurrence of a “worker” caste, in particular) is facultatively “fine-tuned” to suit the characteristics of the environment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01240705
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  • 5
    Electronic Resource
    Electronic Resource
    An investigation of the dependence of structural parameters of the middle atmosphere on the intensity of photochemical and dynamical processes (1988)
    Springer
    Pure and applied geophysics 127 (1988), S. 381-401 
    Details
    ISSN: 1420-9136
    Keywords: Middle atmosphere ; temperature ; neutral and ion composition ; turbulent transfer ; model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Using a numerical model for temperature and neutral and ion composition behaviour at middle atmospheric heights, an analysis has been made of the dependence of atmospheric structural parameters on temperature, solar activity, and on turbulent transfer intensity. For mesospheric heights, an inverse dependence of the nitric oxide density on the temperature has been found. It is thus possible to explain experimentally obtained temperature variations over a cyclc of solar activity at mesospheric and lower thermospheric heights. Numerical simulation results indicate that the temperature in the height range ∼75–120 km depends considerably on both the absolute values of turbulent transfer coefficients and their vertical gradients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00879818
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  • 6
    Electronic Resource
    Electronic Resource
    Comparison of industrial and high-resolution thermal data in a sedimentary basin (1990)
    Springer
    Pure and applied geophysics 133 (1990), S. 251-267 
    Details
    ISSN: 1420-9136
    Keywords: Heat flow ; sediments ; temperature ; gradients ; conductivity ; industrial data ; scientific data ; hydrodynamics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Temperature, temperature gradient and heat flow, derived from four wells in the Western Canada Sedimentary Basin have been compared with similar quantities derived from maps constructed from industrial data. Individual industrial temperature data may differ from the high-resolution temperature log by up to 30 K, but linear regression of the collected data agrees within 10 K at all points observed. Some evidence suggests that measured conductivities, using drill-cuttings, are biased toward average values. Derived heat flows show agreement of heat flow within 10% within the Mesozoic section. In the Paleozoic section differences are greater, and more varied, with insufficient data for general conclusions. Both styles of measurement provide opportunities for interpretation, each contributing to thermal analysis of sedimentary basins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00877162
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  • 7
    Electronic Resource
    Electronic Resource
    Nest architecture in the western harvester ant,Pogonomyrmex occidentalis (Cresson) (1994)
    Springer
    Insectes sociaux 41 (1994), S. 401-410 
    Details
    ISSN: 1420-9098
    Keywords: Nest structure ; temperature ; brood movement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The structure and thermal environment produced by the nest cones of the western harvester ant,Pogonomyrmex occidentalis, are investigated. The nest cone is oriented so that the longest slope faces towards the southeast ad the nest entrance faces the southeast. The temperature of the soil was monitored at thirty-six locations within the nest in order to measure the daily temperature change as a function of depth, aspect and radial distance from the center of peak of the cone. The occupancy of the nest cone by workers and by brood was assessed by core samples taken at different times of day in different portions of the cone. The brood are only present during the midmorning sample and are present in greatest numbers on the eastern side of the cone. The adult workers are present in the cone in highest numbers during the midmorning, virtually absent from the cone during mid-afternoon and returning in smaller numbers at dusk, apparently spending the night near the surface on the eastern side of the mound. The eastern and southern portions of the cone are occupied most frequently while the western side of the cone is nearly vacant. The nest cone is an adaptation which magnifies the amplitude of daily temperature fluctation. By moving to appropriate areas of the nest cone, the ants can take advantage of the increased range of temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01240643
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  • 8
    Electronic Resource
    Electronic Resource
    Effects of temperature and sliding rate on frictional strength of granite (1986)
    Springer
    Pure and applied geophysics 124 (1986), S. 445-469 
    Details
    ISSN: 1420-9136
    Keywords: Shear strength ; temperature ; deformation rate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Layers of artificial granite gouge have been deformed on saw-cut granite surfaces inclined 30° to the sample axes. Samples were deformed at a constant confining pressure of 250 MPa and temperatures of 22 to 845°C. The velocity dependence of the steady-state coefficient of friction (μss) was determined by comparing sliding strengths at different sliding rates. The results of these measurements are consistent with those reported bySolberg andByerlee (1984) at room temperature andStesky (1975) between 300 and 400°C. Stesky found that the slip-rate dependence of (μss) increased above 400°C. In the present study, however, the velocity dependence of (μss) was nearly independent of temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00877211
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  • 9
    Electronic Resource
    Electronic Resource
    Hydrothermal studies in a new diamond anvil cell up to 10 GPa and from −190°C to 1200°C (1993)
    Springer
    Pure and applied geophysics 141 (1993), S. 487-495 
    Details
    ISSN: 1420-9136
    Keywords: Pressure ; temperature ; hydrothermal ; H2O ; equation of state ; diamond anvil cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The new hydrothermal diamond anvil cell (HDAC) has been designed for optical microscopy and X-ray diffraction at pressures up to 10 GPa and temperatures between −190°C and 1200°C. Laser light reffected from the top and bottom anvil faces and the top and bottom solid sample faces produce interference fringes that provide a very sensitive means of monitoring the volume of sample chamber and for observing volume and refractive index changes in solid samples due to transitions and reactions. Synchrotron radiation has been used to make X-ray diffraction patterns of samples under hydrothermal conditions. Individual heaters and individual thermocouples provide temperature control with an accuracy of ±0.5°C. Liquid nitrogen directly introduced into the HDAC has been used to reduce the sample temperature to −190°C. The α-β phase boundary of quartz has been used to calculate the transition pressures from measured transition temperatures. With this method we have redetermined 5 isochores of H2O up to 850°C and 1.2 GPa at which the solution rate of the quartz became so rapid that the quartz dissolved completely before the α-β transition could be observed. When silica solutions were cooled, opal spherules and rods formed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00998341
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  • 10
    Electronic Resource
    Electronic Resource
    The significance of temperature and barometric pressure changes for the snow surface activity ofIsotoma hiemalis (Collembola) (1984)
    Springer
    Cellular and molecular life sciences 40 (1984), S. 1369-1372 
    Details
    ISSN: 1420-9071
    Keywords: Collembola ; snow ; activity ; temperature ; barometric pressure changes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Temperature is limiting for the snow surface activity ofIsotoma hiemalis: values below a threshold of −2.5° to −3°C are avoided. Changing barometric pressure leads to increased surface activity, thus being responsible for mass appearances. These experiments provide the first evidence for sensitivity to and reaction to barometric pressure changes in insects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01951894
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