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  • 1
    Online Resource
    Online Resource
    Amsterdam :Elsevier Science & Technology,
    Keywords: Mineralogy. ; Mineralogical chemistry. ; Geophysics. ; Materials at high pressures. ; Electronic books.
    Description / Table of Contents: High-pressure mineral physics is a field that is strongly driven by the development of new technology. Fifty years ago, when experimentally achievable pressures were limited to just 25 GPa, little was know about the mineralogy of the Earth's lower mantle. Silicate perovskite, the likely dominant mineral of the deep Earth, was identified only when the high-pressure techniques broke the pressure barrier of 25 GPa in 1970s. However, as the maximum achievable pressure reached beyond one Megabar (100 GPa) and even to the pressure of Earth's core on minute samples, new discoveries increasingly were fostered by the development of new analytical techniques and improvements in sensitivity and precision of existing techniques. The book consists of six sections which group the papers according to their main topics: a) Elastic and Anelastic Properties; b) Rheology; c) Melt and Glass Properties; d) Structural and Magnetic Properties; e) Diffraction and Spectroscopy; f) Pressure Calibration and Generation. As many papers cover multiple topics, readers may find papers of interest in different sections. All papers are prepared with emphasis on technical details suitable for a technical reference. Many on-line software resources are also listed in as detailed a manner as possible. However, the URL of the software sites may be subject to change without notice. * State of the art in a very important branch of geophysics, namely the experimental determination of material behavior at the extreme conditions of planetary interiors * Emphasis on technical details suitable for a technical reference * Includes many on-line software resources.
    Type of Medium: Online Resource
    Pages: 1 online resource (532 pages)
    Edition: 1st ed.
    ISBN: 9780080457666
    DDC: 681.76041
    Language: English
    Note: Front Cover -- Advances in High-Pressure Technology for Geophysical Applications -- Copyright Page -- Contents -- Contributors -- Preface -- Reviewers -- Part I: Elastic and anelastic properties -- Chapter 1. Direct measurements of the elastic properties of iron and cobalt to 120 GPa - implications for the composition of Earth's core -- Chapter 2. A gigahertz ultrasonic interferometer for the diamond anvil cell and high-pressure elasticity of some iron-oxide minerals -- Chapter 3. Simultaneous equation of state, pressure calibration and sound velocity measurements to lower mantle pressures using multi-anvil apparatus -- Chapter 4. Simultaneous determination of elastic and structural properties under simulated mantle conditions using multi-anvil device MAX80 -- Chapter 5. Laboratory measurement of seismic wave dispersion and attenuation at high pressure and temperature -- Part II: Rheology -- Chapter 6. High-temperature plasticity measurements using synchrotron X-rays -- Chapter 7. Stress and strain measurements of polycrystalline materials under controlled deformation at high pressure using monochromatic synchrotron radiation -- Chapter 8. Development of a rotational Drickamer apparatus for large-strain deformation experiments at deep Earth conditions -- Part III: Melt and glass properties -- Chapter 9. Density measurements of molten materials at high pressure using synchrotron X-ray radiography: melting volume of FeS -- Chapter 10. Viscosity and density measurements of melts and glasses at high pressure and temperature by using the multi-anvil apparatus and synchrotron X-ray radiation -- Chapter 11. The effect of composition, compression, and decompression on the structure of high-pressure aluminosilicate glasses: an investigation utilizing 17O and 27Al NMR. , Chapter 12. The application of 17O and 27Al solid-state (3QMAS) NMR to structures of non-crystalline silicates at high-pressure -- Part IV: Structural and magnetic properties -- Chapter 13. Decompression of majoritic garnet: an experimental investigation of mantle periodotite exhumation -- Chapter 14. Chemistry at extreme conditions: approaching the Earth's major interface -- Chapter 15. Pressure dependence on the magnetic properties of titanomagnetite using the reversible susceptibility method -- Part V: Diffraction and spectroscopy -- Chapter 16. High-pressure angle-dispersive powder diffraction using an energy-dispersive setup and white synchrotron radiation -- Chapter 17. Methods and application of the Paris-Edinburgh Press to X-ray diffraction structure solution with large-volume samples at high pressures and temperatures -- Chapter 18. High-pressure structure determination and refinement by X-ray diffraction -- Chapter 19. Nuclear resonant inelastic X-ray scattering and synchrotron Mössbauer spectroscopy with laser-heated diamond anvil cells -- Chapter 20. In situ Raman Spectroscopy with laser-heated diamond anvil cells -- Part VI: Pressure calibration and generation -- Chapter 21. Calibration based on a primary pressure scale in a multi-anvil device -- Chapter 22. High-pressure generation in the Kawai-type apparatus equipped with sintered diamond anvils: application to the wurtzite-rocksalt transformation in GaN -- Chapter 23. Development of high P-T neutron diffraction at LANSCE - toroidal anvil press, TAP-98, in the HiPPO diffractometer -- Chapter 24. A new optical capillary cell for spectroscopic studies of geologic fluids at pressures up to 100 MPa -- Chapter 25. Internal and external electrical heating in diamond anvil cells -- Chapter 26. A new gasket material for higher resolution NMR in diamond anvil cells -- Author index. , Subject index.
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  • 2
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: Online-Ressource (17 S., 4,41 MB) , Ill., graph. Darst.
    Language: German
    Note: Förderkennzeichen BMBF 13N9615 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Auch als gedr. Ausg. vorhanden , Systemvoraussetzungen: Acrobat reader.
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  • 3
    Online Resource
    Online Resource
    Cham :Springer International Publishing AG,
    Keywords: Physical geography. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (336 pages)
    Edition: 1st ed.
    ISBN: 9783319324494
    Series Statement: Space Sciences Series of ISSI Series ; v.55
    DDC: 551.48028
    Language: English
    Note: Intro -- Contents -- 1 Foreword: International Space Science Institute (ISSI) Workshop on Remote Sensing and Water Resources -- References -- 2 Modelling Freshwater Resources at the Global Scale: Challenges and Prospects -- Abstract -- 1 Introduction -- 2 Approaches for Modelling Global Hydrology -- 3 Challenges -- 3.1 Modelling Human Water Use -- 3.2 Uncertain Climate Input -- 3.2.1 Uncertainties in Historic Climate Information and Their Impact on Simulating Water Resources -- 3.2.2 Uncertainties in Global and Regional Climate Projections and Their Impact on Simulating Future Water Resources -- 3.3 Quantification of the Role of Active Vegetation Under Changing Climate and CO2 Concentrations -- 3.4 Understanding of Why GHMs (Including Global Irrigation Models) Respond Differently to Changed Climate Input -- 3.5 Modelling of Monthly Time Series of River Discharge and Human Water Use to Support More Meaningful Indicators of Water Stress for Both Humans and Ecosystems -- 3.6 Simulation of Groundwater-Surface Water Interaction and Capillary Rise by Gradient-Based Groundwater Modelling -- 3.7 Detection and Attribution of Observed Changes in Freshwater Systems -- 4 Prospects -- 4.1 Multi-criteria Validation Against River Discharge and Geodetic/Remote Sensing Observations -- 4.2 Multi-criteria Calibration and Data Assimilation -- 4.3 Hyperresolution Global Hydrological Modelling -- 5 Conclusions -- Acknowledgments -- References -- 3 On the Use of Hydrological Models and Satellite Data to Study the Water Budget of River Basins Affected by Human Activities: Examples from the Garonne Basin of France -- Abstract -- 1 Introduction -- 2 The Water Balance at the Scale of the Entire Garonne Basin -- 2.1 Climate and Physical Properties -- 2.2 Anthropization, Environmental Change due to Human Actions. , 2.3 Hydrological Regime of the Garonne Basin: Trends and Variability -- 3 Interest of Fine Scale Data to Validate or Constrain Models -- 3.1 Snow Cover -- 3.2 Crop Sowing Date -- 4 Explicit Modeling of Human Activities at the Scale of the Basin Using a Multi-agent Simulation Platform -- 4.1 MAELIA: A Multi-agent Platform of Social-Ecological Systems -- 4.1.1 Agricultural Processes -- 4.1.2 Hydrological Processes -- 4.1.3 Water Management -- 4.1.4 Other Socioeconomic Processes -- 4.1.5 Calibration of the Model -- 4.2 Evaluation and Impact of Changes in the Spatial Allocation of Cropping Systems in the Aveyron Sub-basin -- 4.2.1 Studied Area and Methodology -- 4.2.2 Evaluation of the MAELIA Instance -- 4.2.3 Impact Assessment of Crop Rotation Changes -- 5 Conclusions -- Acknowledgments -- References -- 4 On Creating Global Gridded Terrestrial Water Budget Estimates from Satellite Remote Sensing -- Abstract -- 1 Introduction -- 2 Data and Methodology -- 2.1 Utilized Data -- 2.2 Product Merging and Water Budget Closure -- 2.3 Design of the Budget Closure Experiments -- 3 Results and Discussion -- 3.1 Roles of Non-satellite Sources in Closing the Water Budget -- 3.2 Roles of In Situ Precipitation Observations in Water Budget Closure -- 3.3 Effects of Different Remote Sensing ET Products in the Water Budget Closure -- 3.4 Roles of CKF in Constraining the Water Balance -- 3.5 Runoff Validation Against GRDC Data at the Basin Scale -- 4 Conclusions -- Acknowledgments -- References -- 5 Lake Volume Monitoring from Space -- Abstract -- 1 Introduction -- 2 Satellite Altimetry -- 2.1 Introduction -- 2.2 Basics of Satellite Altimetry -- 2.3 Past, Present, and Future Satellite Altimetry -- 2.4 Combination of Multi-Satellite Data -- 2.5 Accuracy of Satellite Altimetry Over Lakes -- 3 Satellite Imagery -- 4 Storage Change Calculation. , 5 Case Study: The Tibetan Plateau -- 6 Results -- 7 Conclusions -- Acknowledgments -- References -- 6 The SWOT Mission and Its Capabilities for Land Hydrology -- Abstract -- 1 SWOT Mission Overview -- 1.1 The Needs for a Global Water Surface Mission and Its Requirements -- 1.2 Characteristics of the KaRIn Instrument -- 1.3 SWOT Measurements over Terrestrial Surface Waters -- 1.4 SWOT Spatiotemporal Coverage -- 2 River Studies -- 2.1 Rivers Seen by SWOT -- 2.2 Instantaneous Direct River Discharge Estimations -- 2.3 Data Assimilation and Optimal Interpolation -- 3 Lake/Reservoir Studies and Other Land Hydrology Applications -- 3.1 Lakes and Reservoirs -- 3.2 Other Land Hydrology Applications and Synergistic Land Sciences -- 4 Conclusions and Perspectives -- Acknowledgments -- References -- 7 Toward a High-Resolution Monitoring of Continental Surface Water Extent and Dynamics, at Global Scale: from GIEMS (Global Inundation Extent from Multi-Satellites) to SWOT (Surface Water Ocean Topography) -- Abstract -- 1 Introduction -- 2 The Potential and Limitation of Satellite Techniques for Surface Water Estimation -- 2.1 Visible (VIS) and Near-Infrared (NIR) Observations -- 2.2 Active Microwave Observations -- 2.3 Passive Microwave Observations -- 3 A Multi-satellite Methodology for Global Surface Water Estimation -- 3.1 The Global Inundation Extent from Multi-satellites (GIEMS) -- 3.2 Downscaling of GIEMS -- 3.2.1 Downscaling Based on High-Resolution Satellite Observations -- 3.2.2 Downscaling Based on Topography Information -- 4 The Future with SWOT -- 5 Conclusions and Perspective -- Acknowledgments -- References -- 8 Assessing Global Water Storage Variability from GRACE: Trends, Seasonal Cycle, Subseasonal Anomalies and Extremes -- Abstract -- 1 Introduction -- 2 Data -- 2.1 GRACE Data -- 2.2 Filtered Grids of Atmospheric Reanalysis -- 3 Methods. , 3.1 Signal Decomposition -- 3.1.1 Background and Previous Approaches -- 3.1.2 Seasonal Trend Decomposition Using Loess (STL) -- 3.2 Monthly Averaging of the Daily Decomposed Forcing Time Series -- 3.2.1 Limitations of the Arithmetic Mean for the Comparison of High-Frequency Anomalies -- 3.2.2. Comparing Flux and State Variables at Different Temporal Resolutions -- 3.2.3 Weights Based on Integrated Exponential Decay Functions -- 3.2.4 Shape and Properties of the Weighting Function -- 3.3 Significance Testing and Correlation Analysis -- 3.3.1 Linear Trends -- 3.3.2 Inter-Annual Anomalies -- 3.3.3 Seasonal Cycle -- 3.3.4 Subseasonal Residuals -- 3.4 Identifying Droughts in the GRACE Record -- 4 Global Hydrological Variability in the GRACE Data -- 4.1 Distribution of GRACE Variance Among Temporal Components -- 4.2 Linear Trends -- 4.3 Inter-Annual Anomalies -- 4.4 Seasonal Cycle -- 4.5 Subseasonal Residuals -- 4.6 Droughts -- 5 Conclusions -- Acknowledgments -- Appendix 1: STL for Unevenly Spaced Time Series -- Locally Weighted Regression (Loess) -- Inner Loop -- Outer Loop -- Choosing the Parameters -- Appendix 2 -- Analytical Integration of the Weighting Function -- References -- 9 Groundwater Storage Changes: Present Status from GRACE Observations -- Abstract -- 1 Introduction -- 2 Groundwater Depletion from GRACE -- 2.1 Groundwater Depletion in North West India -- 2.2 Groundwater Depletion in the California Central Valley -- 2.3 Groundwater Depletion in Southern Murray-Darling Basin -- 2.4 Groundwater Depletions in Other Regions -- 3 Major Challenges in Monitoring Groundwater Change Using GRACE -- 3.1 Uncertainty of SSS Water Storage Changes -- 3.2 Uncertainties in GRACE TWS Storage Changes -- 4 Summary -- Acknowledgments -- References -- 10 Modeling Groundwater Depletion at Regional and Global Scales: Present State and Future Prospects -- Abstract. , 1 Introduction -- 2 Human Water Use and Groundwater Pumping -- 3 Global and Regional Assessments of Groundwater Depletion -- 4 Groundwater Depletion and Sea-Level Rise -- 5 Future Projections of Groundwater Depletion -- 6 A Way Forward -- 6.1 Quantifying the Sustainable Yield with Use of Satellite Observations and Integrated Modeling Framework -- 6.2 Assessing Food Security -- 6.3 Assessing Regional Mitigation Strategies on Food Security -- Acknowledgments -- References -- 11 What Can be Expected from the GRACE-FO Laser Ranging Interferometer for Earth Science Applications? -- Abstract -- 1 Introduction -- 2 Simulation Assumptions and Strategy -- 3 Results in the Spectral and Spatial Domain -- 4 Regional Applications Using Simulated MWI and LRI Data -- 5 Error Analysis -- 6 Summary and Conclusions -- 7 Acknowledgments -- References -- 12 Subsurface Hydrology of the Lake Chad Basin from Convection Modelling and Observations -- Abstract -- 1 Introduction -- 2 Description of the Lake Chad Basin -- 2.1 Hydrology of Lake Chad -- 2.2 Geology of the Chad Basin -- 2.3 Hydrogeology of the Basin -- 2.4 Potential Permeability Field of the Basin -- 3 2D Convective Model -- 4 Discussion -- 4.1 Relations Between the Deep Convective Circulation and Thermal Data -- 4.1.1 Subsurface Thermal Data -- 4.1.2 Surface Thermal Data -- 4.2 Relation Between Deep Convective Circulation and Hydrogeology -- 4.2.1 Evolution of the Water Composition -- 4.2.2 Comparison Between Convective Velocity and Transient Variations of the Piezometric Level: Inference on Water Mass Changes -- 5 Conclusions -- Acknowledgments -- Appendix 1: Governing Equations, Parameters and Equations of State -- Appendix 2: Parameter values -- Appendix 3: Method and Boundary Conditions -- Appendix 4: Evaluation of the Hydrological and Thermal Characteristics of Our Model -- References. , 13 Water and Food in the Twenty-First Century.
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  • 4
    Electronic Resource
    Electronic Resource
    Chester : International Union of Crystallography (IUCr)
    Journal of synchrotron radiation 5 (1998), S. 398-400 
    ISSN: 1600-5775
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: To facilitate high-sensitivity soft X-ray magnetic circular dichroism experiments, a dynamic local bump system has been developed at the SRRC storage ring. This system was devised to vary dynamically the vertical slope of the electron beam in a bending magnet, producing, in the electron orbit plane, soft X-rays with an alternating elliptical polarization. The local bump was created by using two pairs of vertical correctors located on each side of the bending magnet. The bump strength coefficient was obtained both from calculated estimation and from measured beam-response matrices. Control electronics for proper bump strength settings were designed to incorporate the existing orbit-corrector function. A corresponding graphic user interface was implemented so that the bump amplitude could be easily adjusted. The performance of this system is presented. Disturbance on the stored electron beam orbit was observed while flipping the corrector polarity during EPBM (elliptical polarization from bending magnets) operation. A local feedback loop, developed to eliminate such disturbance on other beamlines, is also described.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 3131-3136 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report a calculation on the current-voltage characteristics of double-barrier resonant tunneling diodes. The results can well-explain experimental observations, in particular, the temperature dependence of both the absolute current amplitude and the resonant voltage positions. Our calculation takes into account the self-consistent Poisson equation, quantum mechanical tunneling, and band-gap offset at the heterojunctions. In addition, the calculation includes a realistic scattering-induced broadening effect, with which a quantitative fit throughout the entire negative differential resistance (NDR) region is demonstrated. Finally, we show that the differential resistance in the NDR region can be tuned, when asymmetrical tunneling barriers are used.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 2473-2475 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report experimental observation on the area and temperature dependence of the hysteresis in the current-voltage characteristics of double-barrier resonant tunneling diodes. Our observation shows that the hysteresis can simply result from a load line effect, since (1) the hysteresis will disappear when the the device area is reduced, and (2) the hysteresis becomes wider at lower temperatures. We compare the data with theoretical predictions from the intrinsic bistability picture, and obtain the criterion for observing current bistability.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 749-751 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have grown and characterized heteroepitaxial films of InP on GaAs. We demonstrate that by using flow-rate modulation epitaxy to grow the interface layer in a two-step process, we can improve the quality of heteroepitaxy films. The full widths at half maximum of the x-ray rocking curve and the 10 K photoluminescence spectrum for a 6.2-μm-thick InP/GaAs are 144 arcsec and 1.28 meV, respectively.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 3711-3716 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Zn-doped GaxIn1−xP epilayers grown by metalorganic chemical vapor deposition have been studied in a wide range of GaP mole fraction. The Zn distribution coefficient was studied as a function of alloy composition. With a constant flow rate of diethylzinc, a decreasing net hole concentration was observed with increasing GaP mole fraction. The I-V characteristics of Au on p-GaxIn1−xP Schottky diodes show a deviation from an ideal thermionic behavior as the lattice mismatch increases. This deviation was analyzed in terms of the shunt resistance which decreased exponentially with the mismatch. A dominant hole trap located at EV+0.84 eV was detected by deep-level transient spectroscopy in a Ga0.032In0.968P layer. The density of this hole trap significantly increases with increasing lattice mismatch.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, U.K. and Cambridge, USA : Blackwell Science Ltd
    Plant pathology 45 (1996), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: About 90 barley cultivars mostly of European or Japanese origin, were grown for 2–5 years at eight sites in China where barley yellow mosaic virus was known to occur. The sites were selected because they had previously been used to screen breeding lines and some differences between them in cultivar response had been suspected. ELISA tests showed that symptomless plants were not infected by the virus and the proportions of plants with symptoms were therefore recorded as a measure of susceptibility. European cultivars carrying the ym4 gene, which confers resistance to the common European strain, were usually resistant at two sites but susceptible at the others, but one (cv. Energy) was resistant at all sites. Eleven of the Japanese cultivars showed differential responses between sites but there was no correspondence with strains recognized in Japan. There are probably several distinct Chinese strains but further experiments would be needed to identify them. The Japanese cultivars Chosen, Hagane Mugi, Iwate Mensury 2 and Mokusekko 3 seem to be resistant to all known virus strains and are probably the most useful for plant breeders.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Seeds of selected European and Japanese winter wheat cultivars were grown at two experimental sites in China, namely Yaan, Sichuan province (YA), and Yangzhou, Jiangsu province (YZ), where wheat yellow mosaic bymovirus (WYMV) was severe. There were some differential responses of the cultivars to the virus isolates present at the two sites. The complete nucleotide sequence of both RNAs of both virus isolates was determined. Their genome organization was identical to that reported for a Japanese isolate and the sizes were very similar. Nucleotide comparisons demonstrated that parts of the CI and NIa coding regions on RNA1 and the N-terminal part of the P2 coding region on RNA2 were particularly variable, while substantially conserved regions occurred in the 3′ UTR of RNA2, the 7K, one part of the CI and parts of the NIb and coat protein. It seems unlikely that differences in the 7K and NIa-VPg proteins are responsible for virulence differences and the CI and NIb regions were considered the most promising for further study.
    Type of Medium: Electronic Resource
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