Results 251 to 260 of about 199,430 (311)

Orientation of the Electronic Qy Transition Dipole Moment in Chlorophyll a. [PDF]

J Phys Chem B
Zahn C, Nag P, Stensitzki T, Müller-Werkmeister H, Schapiro I, Heyne K.   +5 more
europepmc   +1 more source

Fix or freeze? Spectral differences arising from tissue preparation in chemical imaging.

Analyst
Zheng T, Adi W, Campagnola PJ, Yesilkoy F.   +3 more
europepmc   +1 more source

Solid state effects in the IR spectrum of Octahydridosilasesquioxane [PDF]

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2004
Infrared spectrum of Octahydridosilasesquioxane, in the solid state, is reported and analyzed to show the presence of significant solid state effects. This is in marked contrast with the reported Raman spectroscopic studies of this compound in the solid state where no evidence for such a proliferation of these effects were found.
Chomel, Arnold Desmartin, Jayasooriya, Upali A., Babonneau, Florence   +2 more
openaire   +4 more sources

A flare in the millimetre to IR spectrum of 3C273 [PDF]

Nature, 1983
Over the past two years some of us (E.I.R., P.A.R.A., W.K.G., M.G.S., and I.G.N.) have been monitoring the millimetre and submillimetre spectrum of 3C273 (ref. 1). We have presented elsewhere a quiescent millimetre-to-far-IR spectrum2 with an index α = −0.7 (Sv α vα) connecting smoothly to the radio and mid-IR.
E. I. Robson, W. K. Gear, P. E. Clegg, P. A. R. Ade, M. G. Smith, M. J. Griffin, I. G. Nolt, J. V. Radostitz, R. J. Howard   +8 more
openaire   +2 more sources

THE NEAR-IR SPECTRUM OF CH3D [PDF]

Proceedings of the 71st International Symposium on Molecular Spectroscopy, 2016
The near-IR spectrum, from 5000-8960 cm$^{-1}$, of isotopically pure CH$_3$D was taken at temperatures of 294, 400, 500, 600, 700, 800, and 900K with a high resolution Fourier Transform machine at Old Dominion University.
Kevin Lehmann, Vladimir Tyuterev, Andrei Nikitin, Michael Rey, Peter Bernath, Robert Hargreaves, Shaoyue Yang   +6 more
openaire   +3 more sources

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Near‐IR spectrum of polybutadiene

Journal of Polymer Science Part A: Polymer Chemistry, 1996
Abstract : The vibrational overtone spectrum of polybutadiene was recorded up to 14,000/cm and interpreted in the local mode model. The methylenic and olefinic CH stretch progressions, with anharmonicities of 66 and 59/cm, respectively, were identified for delta v = 2, 3,4 and 5.
D. L. Snavely, C. Angevine
openaire   +1 more source

Face detection in the near-IR spectrum

SPIE Proceedings, 2003
Abstract Face detection is an important prerequisite step for successful face recognition. The performance of previous face detection methods reported in the literature is far from perfect and deteriorates ungracefully where lighting conditions cannot be controlled.
Jonathan Dowdall, Ioannis T. Pavlidis, George Bebis   +2 more
openaire   +1 more source

Ir spectrum of dinitrosyldicarbonyliron

Journal of Molecular Structure, 1969
Abstract An analysis of the vapour and liquid spectra of Fe(CO)2(NO)2 in the range 5000-250 cm−1 has led to an assignment of all the fundamental vibrations. A normal-coordinate treatment has been carried out using a diagonal symmetry force field on the basis of a C2v symmetry model for the molecule.
A. Poletti, A. Santucci, A. Foffani
openaire   +1 more source

IR rotational spectrum of methylamine

Journal of Quantitative Spectroscopy and Radiative Transfer, 2020
Abstract Recent progress is reported on the assignment and fitting of a rotational spectrum of methylamine in the ground vibrational state and first and second torsional states. The high resolution infrared spectrum has been analyzed in the 40 to 360 cm−1 region with a resolution of 0.00125 cm−1.
Iwona Gulaczyk, Marek Kręglewski
openaire   +1 more source