A novel miniature zirconia gas sensor with pseudo-reference: Amperometric operation providing unambiguous determination of air-to-fuel ratio

1993 ◽  
Vol 57 (1) ◽  
pp. 45-50 ◽  
Author(s):  
M. Benammar ◽  
W. C. Maskell
Keyword(s):  
Gas Sensor ◽  
Fuel Ratio ◽  
Unambiguous Determination

Potentiometric gas sensor for the selective determination of azides

1991 ◽  
Vol 63 (15) ◽  
pp. 1547-1552 ◽  
Author(s):  
Saad S. M. Hassan ◽  
Mona A. Ahmed ◽  
Sayed A. M. Marzouk ◽  
Eman M. Elnemma
Keyword(s):  
Gas Sensor ◽  
Selective Determination

scholarly journals An algorithm for the unambiguous determination of the equidistant boundary line between two (or more) coastlines

2009 ◽  
Vol 1 (3) ◽  
pp. 49-58 ◽  
Author(s):  
Stefano Ferrero ◽  
Marco Pierozzi ◽  
Luca Repetti ◽  
Luciano Surace
Keyword(s):  
Boundary Line ◽  
Unambiguous Determination

Disordered materials studied using neutron polarization analysis on the multi-detector spectrometer, D7

2008 ◽  
Vol 42 (1) ◽  
pp. 69-84 ◽  
Author(s):  
J. R. Stewart ◽  
P. P. Deen ◽  
K. H. Andersen ◽  
H. Schober ◽  
J.-F. Barthélémy ◽  
...  
Keyword(s):  
Cross Sections ◽  
Disordered Systems ◽  
Disordered Materials ◽  
Polarization Analysis ◽  
Neutron Spectrometer ◽  
Neutron Polarization ◽  
Unambiguous Determination ◽  
Diffraction Patterns ◽  
Scattering Cross Sections

The technique of longitudinal neutron polarization analysis on a multi-detector neutron spectrometer (so-called `xyz'-polarization analysis) is presented. This technique allows the simultaneous and unambiguous determination of the nuclear, magnetic and nuclear spin-incoherent scattering cross sections as a function of both momentum transfer and energy transfer. The implementation ofxyz-polarization analysis on the recently upgraded D7 spectrometer at the Institut Laue–Langevin in Grenoble is described. Several examples of neutron polarization analysis studies of disordered systems on D7 are given, illustrating the valuable information which can be retrieved from the analysis of neutron diffraction patterns between the Bragg peaks.

scholarly journals Analysis of allergenic residues in wines by triple quadrupole LCMS

2019 ◽  
Vol 12 ◽  
pp. 04012
Author(s):  
F.R. Spinelli ◽  
G.J. Cargnel ◽  
A.P. Drehmer ◽  
C. Blatt ◽  
M. Baptistão ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Triple Quadrupole ◽  
Liquid Chromatography Mass Spectrometry ◽  
Treatment Practices ◽  
Unambiguous Determination ◽  
Allergenic Proteins ◽  
Beta Casein ◽  
Fining Agents ◽  
Low Levels

During the winemaking are used technology coadjuvants, between them: albumin, caseinates and lysozyme. These compounds have great oenological properties, however, the presence of their residues can represent risks to people who are allergic to them because they are derived from eggs and milk. Mass spectrometry methods enables unambiguous determination of allergenic proteins at low levels in wines. Therefore, the aim of this study was to determine the concentrations of ovalbumin, alpha-casein, beta-casein and lysozyme in experimental wines treated with different concentrations of them by triple quadrupole liquid chromatography mass spectrometry with Jet Stream Electrospray Ionization (ESI). The wines were elaborated and treated with different concentrations of albumin, lysozyme and potassium caseinate. Bentonite and decantation were used for the removal of the fining agents. The quantification limits (LOQ) for ovalbumin, a-casein, b-casein and lysozyme were: 0.002 mg/L, 0.24 mg/L, 0.75 mg/L and 0.04 mg/L, respectively. Non residues of the proteins were identified in the experimental wines treated with the different amounts of potassium caseinate, albumin and lysozyme, analyzed in this study. These results provide an evidence of the absence of residues of caseinate, albumin and lysozyme in the concentrations tested in the wines if good treatment practices are followed.

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