Zobrazeno 1 - 10
of 57
pro vyhledávání: '"C Ohler"'
Autor:
C. Ohler
Publikováno v:
Europhysics News. 44:27-31
Publikováno v:
IEEE Transactions on Power Systems. 22:1259-1266
This paper presents a method for the dimensioning of a battery energy storage system (BESS) to provide a primary frequency reserve. Numerical simulations based on historic frequency measurements are used to determine the minimum possible capacity, i.
Publikováno v:
Zeitschrift für Palliativmedizin. 15
Heterojunction band offsets and Schottky-barrier heights: Tersoff’s theory in the presence of strain
Publikováno v:
Physical Review B. 58:7864-7871
We have extended the interface dipole theory on heterojunction band offsets and Schottky-barrier heights as formulated by Tersoff [Phys. Rev. Lett. 52, 465 (1984), Phys. Rev. B 30, 4874 (1984)] to the case of strain. Every particular strain state of
Publikováno v:
Journal of Physics D: Applied Physics. 30:1436-1441
In consequence of the progress made in epitaxial techniques, strained layers are important parts of a few of today's optoelectronic devices. Much attention has thus been paid to the question of how the band line-up at a heterojunction is affected whe
Autor:
C. Ohler
Publikováno v:
EPJ Web of Conferences, Vol 54, p 01010 (2013)
An essential design conflict in energy technology is the trade-off between efficiency and cost. The lecture introduces concepts that deal with this trade-off and discusses real world examples. Among the many definitions of efficiency, exergetic effic
Autor:
C. Ohler
Publikováno v:
EPJ Web of Conferences, Vol 54, p 01008 (2013)
The article describes electric power systems from a physicist’s point of view. In contrast to common introductory textbooks on power systems, the emphasis is on the physical design, that is the material selection and the choice of the geometrical s
Publikováno v:
Physical Review B. 50:7833-7837
We have used ultraviolet photoelectron spectroscopy to study the strain dependence of the valence-band offset in situ for InAs/GaAs(100) heterojunctions grown by molecular-beam epitaxy. The Ga 3${\mathit{d}}_{5/2}$ and In 4${\mathit{d}}_{5/2}$ core-l
Publikováno v:
The Canadian journal of nursing research = Revue canadienne de recherche en sciences infirmieres. 42(3)
Patient outcomes are reliant on nursing calibre, which in turn is dependent on the health of work environments and practice settings. The National Survey of the Work and Health of Nurses (NSWHN) examined a broad spectrum of nurses' work and health, w
Publikováno v:
2006 IEEE PES Power Systems Conference and Exposition.
Stressed and less secure power system operating conditions have encouraged both power utilities and large power consumers to look for bulk energy storage systems. Battery energy storage systems (BESS) have excellent records and are used for decades i