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All Library Books, journals and Electronic Records Telegrafenberg

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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    International journal of infrared and millimeter waves 19 (1998), S. 817-825 
    ISSN: 1572-9559
    Schlagwort(e): dipole ; method-of-moments ; lithographic antenna
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Dipole antennas designed for operation at 10 μm wavelength have been fabricated by optical lithography and their properties measured by detection of CO2 laser radiation in integrated thin-film bolometers. We find a remarkably strong increase in cross-polarized signal as the antenna linewidth is increased. The measured beam pattern is a saddle point at broadside (local minimum in the H-plane, local maximum in the E-plane) as predicted by standard method-of-moments theory.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Water, air & soil pollution 123 (2000), S. 259-271 
    ISSN: 1573-2932
    Schlagwort(e): climate change ; greenhouse gases ; greenhouse gases in Israel ; inventory of emissions of greenhouse gases
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Energietechnik
    Notizen: Abstract As a Party to the United Nations Framework Convention on Climate Change, Israel is committed to develop a national inventory of anthropogenic emissions and removals of greenhouse gases. This paper presents the national inventory, which was developed according to the guidelines of the Intergovernmental Panel on Climate Change (IPCC). The inventory includes the following sectors: energy, industrial processes, agriculture, forestry and waste. In this paper, only the inventory of the direct greenhouse gases (CO2, CH4 and N2O) is presented. Emissions of these gases were converted to CO2 equivalent emissions by means of their Global Warming Potentials (a measure of the radiative effects of the different gases relatively to CO2). CO2 emissions from burning fossil fuels to produce energy are by far the largest source (50 million tons in 1996). The contribution of methane emissions from decomposition of landfilled municipal solid waste is second in importance (8 million tons of CO2 equivalent). Industrial processes emit about 2 million tons CO2 equivalent, the most important process being cement production. Agricultural emissions amount to about 2 million tons CO2 equivalent and are due to soil emissions of nitrous oxide, methane emissions from enteric fermentation in domestic livestock and N2O and CH4 emissions from animal waste management. Although most forests in Israel are in a growing stage and atmospheric CO2 is therefore removed to form biomass, this removal amounts to 0.4 million tons only and is very small as compared to emissions from other sectors. On a per capita basis, Israel's emissions of CO2 from fuel combustion are not far behind those of some of the most developed countries.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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