Search results for "iTED"
showing 10 items of 2408 documents
Excited State Dynamics in Recombinant Water-Soluble Chlorophyll Proteins (WSCP) from Cauliflower Investigated by Transient Fluorescence Spectroscopy
2008
The present study describes the fluorescence emission properties of recombinant water-soluble chlorophyll (Chl) protein (WSCP) complexes reconstituted with either Chl a or Chl b alone (Chl a only or Chl b only WSCP, respectively) or mixtures of both pigments at different stoichiometrical ratios. Detailed investigations were performed with time and space correlated ps fluorescence spectroscopy within the temperature range from 10 to 295 K. The following points were found: (a) The emission spectra at room temperature (295 K) are well characterized by bands with a dominating Lorentzian profile broadened due to phonon scattering and peak positions located at 677, 684 and 693 nm in the case of C…
Observation of an excitonic Mott transition through ultrafast core-cum-conduction photoemission spectroscopy
2020
Time-resolved soft-X-ray photoemission spectroscopy is used to simultaneously measure the ultrafast dynamics of core-level spectral functions and excited states upon excitation of excitons in WSe$_2$. We present a many-body approximation for the Green's function, which excellently describes the transient core-hole spectral function. The relative dynamics of excited-state signal and core levels reveals a delayed core-hole renormalization due to screening by excited quasi-free carriers, revealing an excitonic Mott transition. These findings establish time-resolved core-level photoelectron spectroscopy as a sensitive probe of subtle electronic many-body interactions and an ultrafast electronic…
Tomographic diagnostics of high-frequency electrodeless lamps in argon–mercury mixtures
2006
Tomographic reconstruction of spatial profiles of the mercury atom density in the excited state 7 3S1 in high-frequency electrodeless lamps (HFELs) has been performed. The measurements of the Hg 546.1 nm line emission intensity have been made for the HFELs in argon–mercury mixture depending on the operation regime with different cold spot temperatures in the range 31–98 °C. The maximum entropy-based algorithm was applied for the reconstruction of local emission coefficients from the integrated intensities. The emission coefficients are directly related to the local values of the mercury atom density in the excited state 7 3S1, the upper state of the 546.1 nm transition. Such an investigatio…
Erratum: “Nonadiabatic orientation, toroidal current, and induced magnetic field in BeO molecules” [J. Chem. Phys. 129, 164303 (2008)]
2009
Practitioner views of goodwill accounting under US GAAP
2020
PurposeAccounting standards for goodwill may intensify the agency conflict. Since auditors evaluate intangible asset valuations, this study examines to what extent being an auditor (including Big 4 auditors) and being female as indicators of professional skepticism and conservatism predict accounting professionals' critical views of goodwill accounting under US GAAP.Design/methodology/approachStatistical analyses of a survey of accounting professionals in the Pacific Northwest region of the United States.FindingsThe respondents' views are dispersed from trust in GAAP to views reflecting management opportunism in goodwill accounting. While being an auditor (including Big 4 auditors) does not…
UNCLOS and territorialization of the seas: the case of Indian and Pacific Oceans
2017
The 200-nautical-mile Exclusive Economic Zone created by the 1982 UNCLOS regime generates conflict in areas where the distance between opposite national coasts is less than 400 nautical miles and in marginal seas surrounded by many states and with islands. This is the case of the marginal seas in the Indian and Pacific Oceans. In particular, the EEZ regime has proved troublesome in the South China Sea, leading some authors to ask whether it has actually strengthened or undermined peace and cooperation. Does the problem really lie with UNCLOS? My purpose hereby is to explain that, in truth, UNCLOS is a milestone in the process of territorialization of the seas . The EEZ regime represents the…
Codification of State liability for environmental damage resulting from acts not prohibited by International Law
2023
Codification of State liability for environmental damage resulting from acts not prohibited by International Law. 1. Introduction. 2. The 2001 Draft Articles on "Prevention of Transboundary Harm from Hazardous Activities". 3. The 2006 Draft Principles on "Allocation of loss in the case of transboundary harm arising out of hazardous activities".
Terrorism as a threat to international tourism: world trends
2018
Current world trends in the development of tourism industry are studied in the article. The essence and types of terrorism have been determined; their classification has been provided. The influence of terrorist acts on the development of tourism in different regions has been analyzed. The efforts made by the international community to neutralize this new challenge for the tourism business have been examined.
Identifying gene-environment interactions in schizophrenia: contemporary challenges for integrated, large-scale investigations
2014
European Community Recent years have seen considerable progress in epidemiological and molecular genetic research into environmental and genetic factors in schizophrenia, but methodological uncertainties remain with regard to validating environmental exposures, and the population risk conferred by individual molecular genetic variants is small. There are now also a limited number of studies that have investigated molecular genetic candidate gene-environment interactions (G x E), however, so far, thorough replication of findings is rare and G x E research still faces several conceptual and methodological challenges. in this article, we aim to review these recent developments and illustrate h…
UV photoexcitation of a dissolved metalloid Ge9 cluster compound and its extensive ultrafast response.
2015
Femtosecond pump-probe absorption spectroscopy in tetrahydrofuran solution has been used to investigate the dynamics of a metalloid cluster compound {Ge9[Si(SiMe3)3]3}(-). Upon UV photoexcitation, the transients in the near-infrared spectral region showed signatures reminiscent of excess electrons in THF (bound or quasi-free) whereas in the visible part excited state dynamics of the cluster complex dominates.