摘要:

Two-dimensional Fourier-transform-based pattern recognition is used to characterize natural populations of marine algae by their two-dimensional,in vivofluorescence spectra. The two dimensional fluorescence spectrum, termed an excitation-emission matrix (EEM), is acquired using a portable, multichannel fluorescence spectrophotometer (PMFS). Natural populations in the Gulf of Mexico south of Louisiana and the coastal area near Savannah, Georgia are characterized by their measurement ofin situfluorescence. Characterization of unknown populations is achieved by comparing the unknown EEMs to a collection of standard EEMs acquired from 23 species (6 classes) of marine algae. Pattern recognition results from data collected along the Georgia coast indicating diatom populations were confirmed by microscopic examination of selected samples.

ISSN:0038-7010    

DOI:10.1080/00387018708081560

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

The natural abundance170 nmr spectra of seventeen aryl isocyanates are reported. Electronic effects of substituents are consistent with previously investigated carbonyl containing functional groups; however, the steric effects ofortho-alky 1 groups give results which are opposite to those noted for other systems.

ISSN:0038-7010    

DOI:10.1080/00387018708081561

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

The emission intensity of copper and manganese in a solid sample determined by laser ablation-direct current argon plasma emission spectrometry is dependent on the type of compound and concentration of matrix (sodium halide). At a lOOx level of matrix to analyte, a depression of 50–70% occurs. The higher the density of the analyte compound, the lower the emission intensity signal. The higher the density of the matrix, the greater the depression.

ISSN:0038-7010    

DOI:10.1080/00387018708081562

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

Non-specific solvent effects on the electronic absorption spectra of Cr(N0336H20 in water, methanol, ethanol, t-butanol and in their binary mixtures were investigated. The spectra were carefully treated using a computer resolution technique. The high correlation between dielectric constant of solvents and the crystal field parameter Dq as well as between refractivity index and oscillator strength of the d-d bands were observed. A concept of a new spectrochemical series has been formulated.

ISSN:0038-7010    

DOI:10.1080/00387018708081563

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

The1H and13C nmr assignments for all hydrogen and carbon atoms were made for β and α arteethers (5 and 6) based on chemical shift theory and 2D-nmr techniques (COSY and HETCOR).

ISSN:0038-7010    

DOI:10.1080/00387018708081564

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

The complete13C NMR resonances for the sesquiterpene lactone 11,13-dihydroparthenolide were established by the application of 2D-INADEQUATE.

ISSN:0038-7010    

DOI:10.1080/00387018708081565

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

The use of non-standard normalized second-order factorial moment may reduce the error involved in analyzing a light signal.

ISSN:0038-7010    

DOI:10.1080/00387018708081566

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0038-7010    

DOI:10.1080/00387018708081559

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor