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Tests were conducted to determine the performance and safety characteristics of specially designed, nonmagnetic Li/BrCl in SOCl2 (Li/BCX) and Li/Cl2 in SO2Cl2 (Li/CSC) battery cells. Discharge tests showed that D-size battery cells yield energy densities of 1.07 Wh/cc3 at currents of 0.17 A. The combination of high energy density and nonmagnetic properties allows smaller, lighter battery packs to be placed in close proximity to guidance systems without magnetic interference to the navigational systems. The safety testing results indicate that these systems possess explosion resistance and other characteristics necessary for a variety of applications 相似文献
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This study aims to characterize urban spatial structure with respect to its multidimensionality. Using an encompassing data set of socioeconomic variables, as well as variables pertaining to the built environment, accessibility and land use, we suggest a quantitatively based urban (sub-) center typology. The fine-grained spatial scale of 1 km2 grid cells permits a higher spatial resolution than that used in most previous studies. Our suggested typology is two-layered: a “macro layer” based on cluster analyses sheds light on urban spatial configurations. A corresponding threshold-based “micro layer” identifies distinctive types of centers and subcenters at the local level. The application of this multi-scale and multivariate typology to four German city regions indicates both the core cities’ morphological dominance and the formation of subcenters with distinct profiles of regional economic importance, land use patterns and urban form. However, a substantial degree of spatial dispersion is observed because much activity is located in non-central locations. 相似文献
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