Evaluation of physical parameters of filter paper substrates for the determination of the ignition propensity of cigarettes

2021 ◽  
Keyword(s):  
Filter Paper ◽  
Physical Parameters ◽  
Ignition Propensity ◽  
Paper Substrates

Experimental Determination of Critical Physical Parameters Affecting JA2 Propellant Grain Response. Phase 1. Screening Design

1991 ◽  
Author(s):  
George A. Gazonas ◽  
David A. Hopkins ◽  
James C. Ford
Keyword(s):  
Experimental Determination ◽  
Phase 1 ◽  
Physical Parameters ◽  
Screening Design ◽  
Response Phase

scholarly journals SEPARATION AND DETERMINATION OF RIBONUCLEOTIDES AND RELATED COMPOUNDS BY IONOPHORESIS ON FILTER PAPER

1953 ◽  
Vol 204 (2) ◽  
pp. 971-981
Author(s):  
William C. Werkheiser ◽  
Richard J. Winzler
Keyword(s):  
Filter Paper ◽  
Related Compounds

scholarly journals Charge Transfer Complexes of Ketotifen with 2,3-Dichloro-5,6-dicyano-p-benzoquinone and 7,7,8,8-Tetracyanoquodimethane: Spectroscopic Characterization Studies

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2039
Author(s):  
Gamal A. E. Mostafa ◽  
Ahmed Bakheit ◽  
Najla AlMasoud ◽  
Haitham AlRabiah
Keyword(s):  
Charge Transfer ◽  
Spectroscopic Characterization ◽  
Molar Ratio ◽  
Charge Transfer Complexes ◽  
Physical Parameters ◽  
Spectrophotometric Methods ◽  
Theoretical Approaches ◽  
The Stability ◽  
Ct Complexes

The reactions of ketotifen fumarate (KT) with 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) and 7,7,8,8-tetracyanoquinodimethane (TCNQ) as π acceptors to form charge transfer (CT) complexes were evaluated in this study. Experimental and theoretical approaches, including density function theory (DFT), were used to obtain the comprehensive, reliable, and accurate structure elucidation of the developed CT complexes. The CT complexes (KT-DDQ and KT-TCNQ) were monitored at 485 and 843 nm, respectively, and the calibration curve ranged from 10 to 100 ppm for KT-DDQ and 2.5 to 40 ppm for KT-TCNQ. The spectrophotometric methods were validated for the determination of KT, and the stability of the CT complexes was assessed by studying the corresponding spectroscopic physical parameters. The molar ratio of KT:DDQ and KT:TCNQ was estimated at 1:1 using Job’s method, which was compatible with the results obtained using the Benesi–Hildebrand equation. Using these complexes, the quantitative determination of KT in its dosage form was successful.

scholarly journals New Data on the Eclipsing Binary V1848 Ori and Improved Orbital and Light Curve Solutions

2020 ◽  
Vol 29 (1) ◽  
pp. 72-80 ◽  
Author(s):  
Fatemeh Davoudi ◽  
Atila Poro ◽  
Fahri Alicavus ◽  
Afshin Halavati ◽  
Saeed Doostmohammadi ◽  
...  
Keyword(s):  
Binary System ◽  
Light Curve ◽  
Mass Function ◽  
Light Curves ◽  
Complete Analysis ◽  
Physical Parameters ◽  
Mass Ratio ◽  
Third Body ◽  
Eclipsing Binary

AbstractNew observations of the eclipsing binary system V1848 Ori were carried out using the V filter resulting in a determination of new times of minima and new ephemeris were obtained. We presented the first complete analysis of the system’s orbital period behavior and analysis of O-C diagram done by the GA and MCMC approaches in OCFit code. The O-C diagram demonstrates a sinusoidal trend in the data; this trend suggests a cyclic change caused by the LITE effect with a period of 10.57 years and an amplitude of 7.182 minutes. It appears that there is a third body with mass function of f (m3) = 0.0058 M⊙ in this binary system. The light curves were analyzed using the Wilson-Devinney code to determine some geometrical and physical parameters of the system. These results show that V1848 Ori is a contact W UMa binary system with the mass ratio of q = 0.76 and a weak fillout factor of 5.8%. The O’Connell effect was not seen in the light curve and there is no need to add spot.

Determination of Selected Pollutants and Measurement of Physical Parameters for the Evaluation of Indoor Air Quality in School Buildings in Athens, Greece

2001 ◽  
Vol 10 (3-4) ◽  
pp. 185-192 ◽  
Author(s):  
Panayotis A. Siskos ◽  
Konstantina E. Bouba ◽  
Aspasia P. Stroubou
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Physical Parameters ◽  
School Buildings

Determination of HCH and DDT in Finger-Prick Whole Blood Dried on Filter Paper and Its Field Application for Monitoring Concentrations in Blood

1996 ◽  
Vol 56 (1) ◽  
pp. 50-57 ◽  
Author(s):  
V. K. Dua ◽  
C. S. Pant ◽  
V. P. Sharma ◽  
G. K. Pathak
Keyword(s):  
Filter Paper ◽  
Whole Blood ◽  
Field Application ◽  
Finger Prick

Determination of Chloroquine in Dried Blood Spots on Filter Paper

1986 ◽  
Vol 8 (2) ◽  
pp. 211-213 ◽  
Author(s):  
Y. Bergqvist ◽  
Ö. Ericsson ◽  
M. Rais
Keyword(s):  
Filter Paper ◽  
Dried Blood Spots ◽  
Blood Spots

Determination of the Jones Matrix of an LC cell and derivation of the physical parameters of the LC molecules

2007 ◽  
Author(s):  
Andreas Hermerschmidt ◽  
Stephanie Quiram ◽  
Frank Kallmeyer ◽  
Hans Joachim Eichler
Keyword(s):  
Physical Parameters ◽  
Jones Matrix
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