Zobrazeno 1 - 7
of 7
pro vyhledávání: '"E. M. Keller"'
Autor:
E M, Keller
Publikováno v:
Pneumologie (Stuttgart, Germany). 73(1)
Autor:
Barbara E. M. Keller
Publikováno v:
Wetlands Ecology and Management. 8:391-401
Concern about colonization of marshesby plant species such as Phragmites australisand Lythrum salicariahas highlighted the needfor management strategies. However, there is a lack ofinformation in the literature on which to base thesedecisions. This s
Publikováno v:
Scopus-Elsevier
Wetlands systems generally are considered as filters, retaining allochthonous metals that can have toxic effects on biota. We investigated patterns of spatial variability in trace metal concentrations in sediments and tissues ofPhragmites australis i
Publikováno v:
IEEE Transactions on Electron Devices. 31:679-683
Silicon solar cells are described which operate at energy conversion efficiencies independently measured at 18.7 percent under standard terrestrial test conditions (AM1.5, 100 mW/cm2, 28°C). These are apparently the most efficient silicon cells fabr
Publikováno v:
Journal of Applied Physics. 57:591-599
It has commonly been reported that the energy band gap in heavily doped silicon is smaller than in lightly doped silicon. The very high open circuit voltages recently achieved in metal‐insulator‐n‐type‐p‐type (MINP) solar cells, in excess o
Autor:
T. Szpitalak, M. R. Willison, Stuart Wenham, S. Jiqun, E. M. Keller, R. B. Godfrey, Martin A. Green, Andrew Blakers
Publikováno v:
IEEE Electron Device Letters. 5:12-13
Silicon solar cells are described which operate at energy conversion efficiencies in excess of 18 percent under standard terrestrial test conditions (AM1.5, 100 mW/cm2, 28°C). These are believed to be the most efficient silicon cells reported to dat
Publikováno v:
Applied Physics Letters. 44:1163-1164
Substantial improvements in silicon solar cell performance are reported. These improvements have been obtained primarily by improved cell open circuit voltage obtained by improved passivation of the cell emitter region. Careful attention to optical d