Quantitative analysis of second order distributed Raman amplification

2003 ◽  
Author(s):  
Y. Hadjar ◽  
N.J. Traynor
Keyword(s):  
Quantitative Analysis ◽  
Second Order ◽  
Raman Amplification

Quantification of acid metabolites in complex plant samples by using second-order calibration coupled with GC-mass spectrometry detection to resolve the influence of seriously overlapped chromatographic peaks

2016 ◽  
Vol 8 (4) ◽  
pp. 747-755 ◽  
Author(s):  
Hai-Yan Fu ◽  
He-Dong Li ◽  
Bing Wang ◽  
Jun-Lan Cai ◽  
Jun-Wei Guo ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Quantitative Analysis ◽  
Second Order ◽  
Mass Spectrometry Detection ◽  
Plant Samples ◽  
New Strategy ◽  
Acid Metabolites ◽  
Second Order Calibration ◽  
Chromatographic Peaks

A new strategy was developed for quantitative analysis of acid metabolites in plant samples.

scholarly journals The rhythms of rhythm

2021 ◽  
pp. 1-33
Author(s):  
Dafydd Gibbon
Keyword(s):  
Spectral Analysis ◽  
Quantitative Analysis ◽  
Low Frequency ◽  
Second Order ◽  
Read Aloud ◽  
Unified Theory ◽  
New Concepts ◽  
Formant Analysis ◽  
Selection Of

The low frequency (LF) spectral analysis or ‘rhythm spectrum’ approach to the quantitative analysis and comparison of speech rhythms is extended beyond syllable or word rhythms to ‘rhetorical rhythms’ in read-aloud narratives, in a selection of exploratory scenarios, with the aim of developing a unified theory of speech rhythms. Current methodologies in the field are first discussed, then the choice of data is motivated and the modulation-theoretic rhythm spectrum and rhythm spectrogram approach is applied to the amplitude modulation (AM) and frequency modulation (FM) of speech. New concepts of rhythm formant, rhythm spectrogram and rhythm formant trajectory are introduced in the Rhythm Formant Theory (RFT) framework with its associated methodology Rhythm Formant Analysis (RFA) in order to capture second order regularities in the temporal variation of rhythms. The interaction of AM and FM rhythm factors is explored, contrasting English with Mandarin Chinese. The LF rhythm spectrogram is introduced in order to recover temporal information about long-term rhythms, and to investigate the configurative function of rhythm. The trajectory of highest magnitude frequencies through the component spectra of the LF spectrogram is extracted and applied in classifying readings in different languages and individual speaking styles using distance-based hierarchical clustering, and the existence of long-term second order ‘rhythms of rhythm’ in long narratives is shown. In the conclusion, pointers are given to the extension of this exploratory RFT rhythm approach for future quantitative confirmatory investigations.

Ultra-long ϕ-OTDR Assisted by Modulated Second-order Raman Amplification

2021 ◽  
Author(s):  
Javier Nuño ◽  
Sonia Martin-Lopez ◽  
Juan Diego Ania-Castañón ◽  
Miguel Gonzalez-Herraez ◽  
Hugo F. Martins
Keyword(s):  
Second Order ◽  
Raman Amplification

Multicomponent quantitative analysis using second-order nonbilinear data: theory and simulations

1989 ◽  
Vol 111 (11) ◽  
pp. 3797-3804 ◽  
Author(s):  
Bruce E. Wilson ◽  
Walter Lindberg ◽  
Bruce R. Kowalski
Keyword(s):  
Quantitative Analysis ◽  
Second Order

scholarly journals Quantitative Analysis of Epinephrine in Human Plasma Samples Using Kinetic Fluorometric Method Combined with Second-order Calibration

2009 ◽  
Vol 25 (10) ◽  
pp. 1231-1236 ◽  
Author(s):  
Shu-Fang LI ◽  
Hai-Long WU ◽  
A-Lin XIA ◽  
Shao-Hua ZHU ◽  
Jin-Fang NIE ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Human Plasma ◽  
Second Order ◽  
Plasma Samples ◽  
Fluorometric Method ◽  
Human Plasma Samples ◽  
Second Order Calibration
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