Large amplitude motion within acetylene–rare gas complexes hosted in helium droplets

Near-infrared spectroscopy of the C2H2–Ar, Kr complexes was performed in the spectral region overlapping the ν3/ν2 + ν4 + ν5 Fermi-type resonance of C2H2. The HElium NanoDroplet Isolation (HENDI) technique was used for this purpose.

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Direct constraints on the impact of TP-AGB stars on the SED of galaxies from near-infrared spectroscopy

Proceedings of the International Astronomical Union ◽

10.1017/s1743921312008757 ◽

2011 ◽

Vol 7 (S284) ◽

pp. 63-65 ◽

Cited By ~ 2

Author(s):

Stefano Zibetti ◽

Anna Gallazzi ◽

Stéphane Charlot ◽

Anna Pasquali ◽

Daniele Pierini

Keyword(s):

Infrared Spectroscopy ◽

Near Infrared Spectroscopy ◽

Spectral Region ◽

Stellar Population ◽

Near Infrared ◽

Agb Stars ◽

Population Synthesis ◽

Stellar Population Synthesis ◽

Evolutionary Phase ◽

The Impact

AbstractWe present new spectro-photometric NIR observations of 16 post-starburst galaxies especially designed to test for the presence of strong carbon features of thermally pulsing AGB (TP-AGB) stars, as predicted by recent models of stellar population synthesis. Selection based on clear spectroscopic optical features indicating the strong predominance of stellar populations with ages between 0.5 and 1.5 Gyr and redshift around 0.2 allows us to probe the spectral region that is most affected by the carbon features of TP-AGB stars (unaccessible from the ground for z ~ 0 galaxies) in the evolutionary phase when their impact on the IR luminosity is maximum. Nevertheless, none of the observed galaxies display such features. Moreover the NIR fluxes relative to optical are consistent with those predicted by the original Bruzual & Charlot (2003) models, where the impact of TP-AGB stars is much lower than has been recently advocated.

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Carrier Dynamics in TiO2and Pt/TiO2Powders Observed by Femtosecond Time-Resolved Near-Infrared Spectroscopy at a Spectral Region of 0.9−1.5 μm with the Direct Absorption Method

The Journal of Physical Chemistry B ◽

10.1021/jp047531k ◽

2004 ◽

Vol 108 (52) ◽

pp. 20233-20239 ◽

Cited By ~ 78

Author(s):

Koichi Iwata ◽

Tomohisa Takaya ◽

Hiro-o Hamaguchi ◽

Akira Yamakata ◽

Taka-aki Ishibashi ◽

...

Keyword(s):

Infrared Spectroscopy ◽

Near Infrared Spectroscopy ◽

Spectral Region ◽

Near Infrared ◽

Carrier Dynamics ◽

Direct Absorption ◽

Absorption Method ◽

Time Resolved

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Quantitative Determination of Germinability ofPuccinia striiformisf. sp.triticiUrediospores Using Near Infrared Spectroscopy Technology

Journal of Spectroscopy ◽

10.1155/2015/384214 ◽

2015 ◽

Vol 2015 ◽

pp. 1-8 ◽

Cited By ~ 2

Author(s):

Yaqiong Zhao ◽

Feng Qin ◽

Pei Cheng ◽

Xiaolong Li ◽

Zhanhong Ma ◽

...

Keyword(s):

Infrared Spectroscopy ◽

Quantitative Determination ◽

Near Infrared Spectroscopy ◽

Spectral Region ◽

Near Infrared ◽

Puccinia Striiformis ◽

Support Vector ◽

Near Infrared Reflectance ◽

Preprocessing Method

Stripe rust caused byPuccinia striiformisf. sp.tritici(Pst) is an important disease on wheat. In this study, quantitative determination of germinability ofPsturediospores was investigated by using near infrared reflectance spectroscopy (NIRS) combined with quantitative partial least squares (QPLS) and support vector regression (SVR). The near infrared spectra of the urediospore samples were acquired using FT-NIR MPA spectrometer and the germination rate of each sample was measured using traditional spore germination method. The best QPLS model was obtained with vector correction as the preprocessing method of the original spectra and 4000–12000 cm−1as the modeling spectral region while the modeling ratio of the training set to the testing set was 4 : 1. The best SVR model was built when vector normalization was used as the preprocessing method, the modeling ratio was 5 : 1 and the modeling spectral region was 8000–11000 cm−1. The results showed that the effect of the best model built using QPLS or SVR was satisfactory. This indicated that quantitative determination of germinability ofPsturediospores using near infrared spectroscopy technology is feasible. A new method based on NIRS was provided for rapid, automatic, and nondestructive determination of germinability ofPsturediospores.

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