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  • 1
    Electronic Resource
    Electronic Resource
    Growth response of selected vegetable crops to spent mushroom compost application in a controlled environment (1984)
    Springer
    Plant and soil 82 (1984), S. 31-40 
    Details
    ISSN: 1573-5036
    Keywords: Elemental antagonism ; Salinity ; Seedling emergence ; Soil amendment ; Waste utilization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Snap bean, cucumber, radish, spinach, and tomato seedlings and plants were grown in soils amended with 0, 10, 20, 30 and 50% spent mushroom compost (SMC) under greenhouse conditions. While total seedling emergence was not affected by the addition of SMC, the rate of seedling emergence was delayed. Increased growth was observed in the range of 30 to 50% SMC. The elemental content in seedling tissue indicated an antagonism among K, Ca, and Mg for ion uptake. Increased plant growth and yield were obtained with addition of 20 to 30% SMC; those grown at 50% SMC exhibited some stunting. The limiting factor in the use of SMC appeared to be its high soluble salts content.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02220767
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Approximate solution for bending of rectangular plates Kantorovich-Galerkin's method (1986)
    Springer
    Applied mathematics and mechanics 7 (1986), S. 87-102 
    Details
    ISSN: 1573-2754
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Mathematics , Physics
    Notes: Abstract This paper derives the cubic spline beam function from the generalized beam differential equation and obtains the solution of the discontinuous polynomial under concentrated loads, concentrated moment and uniform distributed by using delta function. By means of Kantorovich method of the partial differential equation of elastic plates which is transformed by the generalized function (δ function and σ function), whether concentrated load, concentrated moment, uniform distributed load or small-square load can be shown as the discontinuous polynomial deformed curve in the x-direction and the y-direction. We change the partial differential equation into the ordinary equation by using Kantorovich method and then obtain a good approximate solution by using Glerkin's method. In this paper there are more calculation examples involving elastic plates with various boundary-conditions, various loads and various section plates, and the classical differential problems such as cantilever plates are shown.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01896255
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Kantorovich solution for the problem of bending of a ladder plate (1984)
    Springer
    Applied mathematics and mechanics 5 (1984), S. 1365-1374 
    Details
    ISSN: 1573-2754
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Mathematics , Physics
    Notes: Abstract Based on the Kantorovich approximation solution for a rectangular plate in bending, this paper deals with the solutions for the ladder plate with various boundary conditions. The deflection of the plate is expressed in a first-order displacement function w(x,y)=u(x,y)v(y) where the u(x,y) in x direction is the generalized beam function. By making use of the principle of least potential energy, the variable coefficients differential equations for v(y) may be established. By solving is, these differential eugations and making use of the boundary conditions, the accurate solutions of v(y) in y direction may be obtained. Then the displacement function w(x,y) is the solution for the problem of the bending of the ladder plate with a better degree of approximation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01904959
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  • 4
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    Coefficients of the Improved Global Pressure and Temperature (IGPT) model (2019)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Description: "P25para.dat","T25.para.dat" and "dpT25para.dat" include annual average, annual, semi-annual, diurnal, and semi-diurnal cycles parameters of global surface pressure, 2m temperature, and dew point temperature calculated from the ERA5 dataset from 2006 to 2015. "SurfaceElevation.dat" is the global surface elevation data. "EGMUndulation.dat" is used to convert the ellipoidal height to the orthometric height.
    Keywords: Dew point temperature; File format; File name; File size; IGPT Cycles; pressure; Temperature; Uniform resource locator/link to file
    Type: Dataset
    Format: text/tab-separated-values, 20 data points
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    DATA PANGAEA
  • 5
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    Energies, Vol. 11, Pages 744: Reliability Assessment of Wind Farm Electrical System Based on a Probability Transfer Technique (2018)
    MDPI Publishing
    In: Energies
    Details
    Publication Date: 2018-03-26
    Description: Energies, Vol. 11, Pages 744: Reliability Assessment of Wind Farm Electrical System Based on a Probability Transfer Technique Energies doi: 10.3390/en11040744 Authors: Hejun Yang Lei Wang Yeyu Zhang Xianjun Qi Lei Wang Hongbin Wu The electrical system of a wind farm has a significant influence on the wind farm reliability and electrical energy yield. The disconnect switch installed in an electrical system cannot only improve the operating flexibility, but also enhance the reliability for a wind farm. Therefore, this paper develops a probabilistic transfer technique for integrating the electrical topology structure, the isolation operation of disconnect switch, and stochastic failure of electrical equipment into the reliability assessment of wind farm electrical system. Firstly, as the traditional two-state reliability model of electrical equipment cannot consider the isolation operation, so the paper develops a three-state reliability model to replace the two-state model for incorporating the isolation operation. In addition, a proportion apportion technique is presented to evaluate the state probability. Secondly, this paper develops a probabilistic transfer technique based on the thoughts that through transfer the unreliability of electrical system to the energy transmission interruption of wind turbine generators (WTGs). Finally, some novel indices for describing the reliability of wind farm electrical system are designed, and the variance coefficient of the designed indices is used as a convergence criterion to determine the termination of the assessment process. The proposed technique is applied to the reliability assessment of a wind farm with the different topologies. The simulation results show that the proposed techniques are effective in practical applications.
    Electronic ISSN: 1996-1073
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by MDPI Publishing
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  • 6
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    Synthesis and characterizations of waterborne polyurethane modified with 3-aminopropyltriethoxysilane (2010)
    Springer
    Details
    Publication Date: 2010-01-08
    Print ISSN: 0170-0839
    Electronic ISSN: 1436-2449
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Springer
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  • 7
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    Production of Flexible Photonic Crystal Films for Compatible Far Infrared and Laser-Band Camouflage by Vacuum Coating Method (2016)
    Springer
    Details
    Publication Date: 2016-05-01
    Print ISSN: 1071-2836
    Electronic ISSN: 1573-8760
    Topics: Physics
    Published by Springer
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  • 8
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    Evolution of ground-state quadrupole and octupole stiffnesses in even-even barium isotopes (2015)
    American Physical Society (APS)
    Details
    Publication Date: 2015-08-04
    Description: Author(s): Hua-Lei Wang, Jie Yang, Min-Liang Liu, and Fu-Rong Xu Quadrupole and octupole stiffnesses in the ground states of even-even Ba 112 − 150 isotopes have been systematically investigated by means of potential-energy-surface calculations. The calculations are carried out in both ( β 2 , γ , β 4 ) and ( β 2 , β 3 , β 4 , β 5 ) deformation spaces with the inclusion of triaxial and… [Phys. Rev. C 92, 024303] Published Mon Aug 03, 2015
    Keywords: Nuclear Structure
    Print ISSN: 0556-2813
    Electronic ISSN: 1089-490X
    Topics: Physics
    Published by American Physical Society (APS)
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  • 9
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    Linking performance trait stability with species distribution: the case of Artemisia and its close relatives in northern China (2015)
    Wiley
    Details
    Publication Date: 2015-08-11
    Description: Aims Understanding the relationship between species and environments is at the heart of ecology and biology. Ranges of species depend strongly on environmental factors, but our limited understanding of relationships between range and trait stability of species across environments hampers our ability to predict their future ranges. Species that occur over a wide range (and thus have wide niche breadth) will have high variation in morpho-physiological traits in response to environmental conditions, thereby permitting stability of performance traits and enabling plants to survive in a range of environments. We hypothesized that species' niche breadth is negatively correlated with the rate of performance trait change along an environmental gradient. Location Northern China. Methods We analysed standing biomass and height of 48 species of Asteraceae ( Artemisia and its close relatives) collected from 65 sites along an environmental gradient across northern China. Results In support of our hypothesis, there were significant negative correlations between climatic niche breadth and rate of change in biomass, a performance trait, but not in height, which is both a morphological and a performance trait. Conclusions These findings have implications for risk assessment of species under climate change and prediction of unknown distributions of species. They also offer a new avenue of research for species distribution models. We show that there were significant negative correlations between climatic niche breadth and rate of change in biomass, a performance trait, but not in height, which is both a morphological and performance trait. Our findings have implications for risk assessment of species under climate change and prediction of unknown distributions of species.
    Print ISSN: 1100-9233
    Electronic ISSN: 1654-1103
    Topics: Biology
    Published by Wiley on behalf of The International Association for Vegetation Science (IAVS).
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  • 10
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    Covariation of finite-amplitude wave activity and the zonal mean flow in the midlatitude troposphere. Part 1: Theory and application to the Southern Hemisphere summer (2015)
    Wiley
    Details
    Publication Date: 2015-09-13
    Description: Tropospheric eddy-mean flow interaction is formulated in terms of the vertically integrated budget of finite-amplitude wave activity (FAWA). At each latitude the dynamics is governed by three coupled equations for the interior- and surface FAWA and barotropic zonal-mean zonal flow. In midlatitude austral summer, the budget reveals a largely adiabatic, antiphase covariation of FAWA and the mean flow. A marked periodicity is found for FAWA around 20-30 days, consistent with the recently discovered Baroclinic Annular Mode . The difference in the spectra of FAWA and the mean flow arises from (i) distinct spectra of low-level meridional eddy heat flux and the barotropic eddy momentum flux convergence, and (ii) strong thermal damping of surface wave activity: the latter makes the FAWA respond largely to the low-level meridional eddy heat flux at low frequencies, whereas the zonal-mean flow responds to the momentum flux convergence whose spectrum is broader and occupies higher frequencies.
    Print ISSN: 0094-8276
    Electronic ISSN: 1944-8007
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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