Results 61 to 70 of about 4,470,820 (395)

Emission spectrum of V3+-αAl2O3 [PDF]

Journal de Physique Lettres, 1977
Two emission lines of V3+-αAl2O 3 have been obtained in the near infrared region (9 740 cm-1) at 2 K, 10 K and 77 K. Lifetimes of these lines and their behaviour under stress have been analyzed and an interpretation is suggested.
Champagnon, Bernard, Duval, E.
openaire   +2 more sources

Spectrum and Duration of Delayed MeV-GeV Emission of Gamma-Ray Bursts in Cosmic Background Radiation Fields

, 2002
We generally analyze prompt high-energy emission above a few hundreds of GeV due to synchrotron self-Compton scattering in internal shocks. However, such photons cannot be detected because they may collide with cosmic infrared background photons, leading
Dai Z. G., MacMinn D., Protheroe R. J., T. Lu, Wijers R. A. M. J., Z. G. Dai   +5 more
core   +1 more source

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Emission dynamics and spectrum of a nanoshell-based plasmonic nanolaser spaser

Nanophotonics
We study theoretically the emission and lasing properties of a single nanoshell spaser nanoparticle with an active core and a plasmonic metal shell. Using time-dependent equations for the gain medium and metal, we calculate the lasing threshold through ...
Aradian Ashod, Caicedo Karen, Cathey Andres, Mora Milena, Recalde Nicole, Infusino Melissa, Veltri Alessandro   +6 more
doaj   +1 more source

Observation of Fano line shape in directional fluorescence emission mediated by coupled planar waveguide modes and interpretation based on Lorentz reciprocity

AIP Advances, 2020
Using a reverse attenuated-total-reflection geometry, we measured angle-scan fluorescence emission spectra of all-dielectric multilayer samples containing a waveguide layer doped with fluorescent dye molecules (fluorescent waveguide layer).
Byungjun Kang, Kengo Motokura, Minoru Fujii, Dmitry V. Nesterenko, Zouheir Sekkat, Shinji Hayashi   +5 more
doaj   +1 more source

The Mid-Infrared Spectrum of Star-forming Galaxies: Global Properties of Polycyclic Aromatic Hydrocarbon Emission [PDF]

, 2006
We present a sample of low-resolution 5-38 μm Spitzer IRS spectra of the inner few square kiloparsecs of 59 nearby galaxies spanning a large range of star formation properties.
J. Smith, B. Draine, D. Dale, J. Moustakas, R. Kennicutt, R. Kennicutt, G. Helou, L. Armus, H. Roussel, K. Sheth, G. Bendo, B. Buckalew, D. Calzetti, C. Engelbracht, K. Gordon, D. Hollenbach, Aigen Li, S. Malhotra, E. Murphy, F. Walter   +19 more
semanticscholar   +1 more source

A softer look at MCG--6-30-15 with XMM-Newton

, 2003
We present analysis and results from the Reflection Grating Spectrometer during the 320 ks XMM observation of the Seyfert 1 galaxy MCG-6-30-15. The spectrum is marked by a sharp drop in flux at 0.7 keV which has been interpreted by Branduardi-Raymont et ...
A. C. Fabian, A. K. Turner, Arnaud, Ballantyne, Behar, Branduardi-Raymont, Elvis, Fabian, Ferland, George, J. C. Lee, Kortright, Laor, Lee, Lee, Lee, Mewe, Nayakshin, Nicastro, Otani, Paerels, Reynolds, Ross, Różańska, S. Vaughan, Sako, Schulz, Shih, Vaughan, Vaughan, Vaughan, Verner, Verner   +32 more
core   +1 more source

Pioglitazone plus (−)‐epigallocatechin gallate: a novel approach to enhance osteogenic performance in aged bone marrow mesenchymal stem cells

FEBS Open Bio, EarlyView.
Aged human bmMSCs are seeded in the scaffold. Osteoblastic induction can slightly increase cell's bone‐forming activity to produce bone‐like tissues, shown as the sporadic xylenol orange‐stained spots (the lower left image). Notably, pioglitazone plus EGCG co‐treatment dramatically increases cell's bone‐forming activity and bone‐like tissue production (
Ching‐Yun Chen, Jia‐Ci Jhang, Chun‐Yi Peng, Quốc Cường Nguyễn, Feng‐Huei Lin, Hung‐Ming Wu, Shankung Lin   +6 more
wiley   +1 more source

Bioluminescence emissions of firefly _Luciola praeusta_ Kiesenwetter 1874 (Coleoptera : Lampyridae : Luciolinae) [PDF]

, 2008
_In vivo_ emission and time-resolved spectra of firefly _Luciola praeusta_ Kiesenwetter 1874 (Coleoptera : Lampyridae : Luciolinae) have been recorded.
Anurup Gohain Barua, Gauranga Dhar Baruah, Nayanmoni Saikia, Simanta Hazarika   +3 more
core   +1 more source

Promiscuous stimulation of HSP70 ATPase activity by parasite‐derived J‐domains

FEBS Open Bio, EarlyView.
The malaria parasite Plasmodium falciparum exports three highly homologous yet functionally divergent J‐domain proteins into human erythrocytes. Here, we show that J‐domains isolated from all three proteins effectively stimulate the ATPase activity of both endogenous host and exported parasite HSP70 chaperones.
Julian Barth, Moritz Koch, Le‐Han Rössner, Johanna Eichhorn, Denys Pogoryelov, Matthias P. Mayer, Jude M. Przyborski   +6 more
wiley   +1 more source