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81.
82.
The classical Strong Szegö-Widom Limit Theorem describes the asymptotic behavior of the determinants of the finite sections PnT(a)Pn of Toeplitz operators, i.e., of operators which have constant entries along each diagonal. We generalize these results to operators which have almost periodic sequences as their diagonals. 相似文献
83.
Steffen Oroszi Torsten Jakob Christian Wilhelm Hauke Harms Thomas Maskow 《Journal of Thermal Analysis and Calorimetry》2011,104(1):223-231
Isothermal microcalorimetry can be used to investigate the photosynthetic energy conversion of autotrophic organisms. In this
study, for the first time a diatom alga was used to compare the calorimetrically measured heat flux with measurements of the
photosynthetic performance by oxygen evolution and pulse-amplitude modulated fluorescence. The presented experimental setup
proved suitable to compare calorimetric data with those of conventional methods of the determination of photosynthesis rates.
Special attention was paid to the contribution of energy dissipation via non-photochemical quenching (NPQ) of chlorophyll
fluorescence to the metabolic energy balance. This was achieved by a combination of different light conditions and the use
of an inhibitor of NPQ. Although NPQ is an important photoprotective mechanism in diatoms, the inhibition of NPQ resulted
in an activation of alternative, energy dissipating pathways for absorbed radiation which completely compensated for the fraction
of energy dissipation by NPQ. 相似文献
84.
Goran Radojev Torsten Linß 《Numerical Methods for Partial Differential Equations》2019,35(6):2305-2317
Collocation with triquadratic C1‐splines for a singularly perturbed reaction–diffusion problem in three dimension is studied. A posteriori error bound in the maximum norm is derived for the collocation method on arbitrary tensor‐product meshes which is robust in the perturbation parameter. Numerical results are presented that support our theoretical estimate. 相似文献
85.
Banbara Mutsunori Inoue Katsumi Kaufmann Benjamin Okimoto Tenda Schaub Torsten Soh Takehide Tamura Naoyuki Wanko Philipp 《Annals of Operations Research》2019,275(1):3-37
Annals of Operations Research - Answer Set Programming (ASP) is an approach to declarative problem solving, combining a rich yet simple modeling language with high performance solving capacities.... 相似文献
86.
Maria Brzhezinskaya Alexander Firsov Karsten Holldack Torsten Kachel Rolf Mitzner Niko Pontius Jan‐Simon Schmidt Mike Sperling Christian Stamm Alexander Föhlisch Alexei Erko 《Journal of synchrotron radiation》2013,20(4):522-530
Aiming at advancing storage‐ring‐based ultrafast X‐ray science, over the past few years many upgrades have been undertaken to continue improving beamline performance and photon flux at the Femtoslicing facility at BESSY II. In this article the particular design upgrade of one of the key optical components, the zone‐plate monochromator (ZPM) beamline, is reported. The beamline is devoted to optical pump/soft X‐ray probe applications with 100 fs (FWHM) X‐ray pulses in the soft X‐ray range at variable polarization. A novel approach consisting of an array of nine off‐axis reflection zone plates is used for a gapless coverage of the spectral range between 410 and 1333 eV at a designed resolution of E/ΔE = 500 and a pulse elongation of only 30 fs. With the upgrade of the ZPM the following was achieved: a smaller focus, an improved spectral resolution and bandwidth as well as excellent long‐term stability. The beamline will enable a new class of ultrafast applications with variable optical excitation wavelength and variable polarization. 相似文献
87.
88.
Torsten Teorell 《Colloid and polymer science》1930,53(3):322-338
Ohne Zusammenfassung 相似文献
89.
90.