scholarly journals Rapid Descriptive Consumer Analysis Using Simultaneous and Monadic Sample Presentation for Coffee

2018 ◽  
Vol 09 (02) ◽  
pp. 63-76 ◽  
Author(s):  
Chloe N. Stokes ◽  
Joseph P. Kerry ◽  
Maurice G. O’Sullivan
Keyword(s):  
Sample Presentation

Effect of sample presentation protocols on the performance of a margarine expert panel

2012 ◽  
Vol 41 (Supplement 1) ◽  
pp. 62-72 ◽  
Author(s):  
A. Györey ◽  
A. Gere ◽  
Z. Kókai ◽  
P. Molnár ◽  
L. Sipos
Keyword(s):  
Expert Panel ◽  
Sample Presentation

Growing Self-Organizing Surface Map: Learning a Surface Topology from a Point Cloud

2010 ◽  
Vol 22 (3) ◽  
pp. 689-729 ◽  
Author(s):  
Vilson Luiz Dalle Mole ◽  
Aluizio Fausto Ribeiro Araújo
Keyword(s):  
Point Cloud ◽  
Hebbian Learning ◽  
Learning Rule ◽  
Surface Topology ◽  
Map Learning ◽  
3D Space ◽  
Dense Point ◽  
Equilateral Triangles ◽  
Sample Presentation ◽  
Self Organizing

The growing self-organizing surface map (GSOSM) is a novel map model that learns a folded surface immersed in a 3D space. Starting from a dense point cloud, the surface is reconstructed through an incremental mesh composed of approximately equilateral triangles. Unlike other models such as neural meshes (NM), the GSOSM builds a surface topology while accepting any sequence of sample presentation. The GSOSM model introduces a novel connection learning rule called competitive connection Hebbian learning (CCHL), which produces a complete triangulation. GSOSM reconstructions are accurate and often free of false or overlapping faces. This letter presents and discusses the GSOSM model. It also presents and analyzes a set of results and compares GSOSM with some other models.

A Preliminary Study of Optothermal Spectroscopy: A Potential near Infrared Sample Presentation Method for the Analysis of Milk

2000 ◽  
Vol 8 (4) ◽  
pp. 267-272 ◽  
Author(s):  
R.H. Wilson ◽  
P.K. Madsen ◽  
M. Defernez ◽  
H.S. Tapp
Keyword(s):  
Near Infrared ◽  
Infrared Region ◽  
Ease Of Use ◽  
Attenuated Total Reflectance ◽  
Mid Infrared ◽  
Globule Size ◽  
On Line ◽  
Fat Globule ◽  
Preliminary Study ◽  
Sample Presentation

Optothermal (OT) spectroscopy is a potential sample presentation technique for use in the near infrared (NIR). Compared to attenuated total reflectance (ATR) in the mid infrared region it offers the same advantages of ease of use but is not so sensitive to sample morphology. Using model mixtures we have shown that it provides better, linear calibrations for the fat content of milk than ATR, particularly when the fat globule size is not controlled. The potential for on-line stopped flow use is also demonstrated. We conclude OT to be a possible means of introducing NIR into the dairy and related industries.

Sample Presentation Considerations in Laser-Induced Breakdown Spectroscopy in Aqueous Solution

2007 ◽  
Vol 61 (9) ◽  
pp. 1021-1024 ◽  
Author(s):  
Xiao Fang ◽  
S. Rafi Ahmad
Keyword(s):  
Elemental Analysis ◽  
Aqueous Media ◽  
Water Jet ◽  
Laser Induced Breakdown Spectroscopy ◽  
Signal To Noise ◽  
Experimental Conditions ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Sample Presentation ◽  
Presentation Methods

Various sample presentation configurations for elemental analysis in aqueous media by laser-induced breakdown spectroscopy (LIBS) have been tested and analyzed. Direct and quantitative comparison between the two different sample presentation methods, plasma excitation within water bulk and on the surface in a water jet, has been carried out using the same LIBS system under the same experimental conditions. Temporal characteristics of light emitted from the plasma induced in both the water bulk and the jet surface containing calcium (Ca) were recorded and presented. Spectral data recorded under optimum detection gating conditions showed that the signal-to-noise ratio (S/N) for excitation in the water jet configuration is approximately 10 times higher than that in the bulk excitation, the actual values of enhancement being dependent on the element type. The typical spectra of aqueous samples containing sodium (Na), calcium (Ca), zinc (Zn), cadmium (Cd), and mercury (Hg) were detected and the signal-to-noise ratios were evaluated and compared for the sample presentation configurations under considerations. The results suggest that for better sensitivity of detection, a simple water jet sample presentation configuration could be designed and implemented for cost-effective commercial use of this technique for elemental analysis in a water environment.

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