Frequency modulated continuous wave technique for referencing and multiplexing intensity based fibre optic sensors

2008 ◽  
Author(s):  
R. A. Perez-Herrera ◽  
D. A. Pereira ◽  
O. Frazão ◽  
J. M. Castro Ferreira ◽  
J. L. Santos ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Fibre Optic ◽  
Wave Technique

scholarly journals Ionic Transport Properties of P2O5-SiO2 Glassy Protonic Composites Doped with Polymer and Inorganic Titanium-based Fillers

Materials ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3004
Author(s):  
Maciej Siekierski ◽  
Maja Mroczkowska-Szerszeń ◽  
Rafał Letmanowski ◽  
Dariusz Zabost ◽  
Michał Piszcz ◽  
...  
Keyword(s):  
Transport Properties ◽  
Continuous Wave ◽  
Electrochemical Impedance ◽  
Pore Space ◽  
Poly Vinyl Alcohol ◽  
Proton Mobility ◽  
Polymeric Additives ◽  
Wave Technique ◽  
Poly Ethylene

This paper is focused on the determination of the physicochemical properties of a composite inorganic–organic modified membrane. The electrical conductivity of a family of glassy protonic electrolytes defined by the general formula (P2O5)x(SiO2)y, where x/y is 3/7 are studied by Alternating Current electrochemical impedance spectroscopy (AC EIS) method. The reference glass was doped with polymeric additives—poly(ethylene oxide) (PEO) and poly(vinyl alcohol) (PVA), and additionally with a titanium-oxide-based filler. Special attention was paid to determination of the transport properties of the materials thus modified in relation to the charge transfer phenomena occurring within them. The electrical conductivities of the ‘dry’ material ranged from 10−4 to 10−9 S/cm, whereas for ‘wet’ samples the values were ~10−3 S/cm. The additives also modified the pore space of the samples. The pore distribution and specific surface of the modified glassy systems exhibited variation with changes in electrolyte chemical composition. The mechanical properties of the samples were also examined. The Young’s modulus and Poisson’s ratio were determined by the continuous wave technique (CWT). Based on analysis of the dispersion of the dielectric losses, it was found that the composite samples exhibit mixed-type proton mobility with contributions related to both the bulk of the material and the surface of the pore space.

A continuous wave technique for the measurement of the elastic properties of cortical bone

1984 ◽  
Vol 17 (5) ◽  
pp. 349-361 ◽  
Author(s):  
R.B. Ashman ◽  
S.C. Cowin ◽  
W.C. Van Buskirk ◽  
J.C. Rice
Keyword(s):  
Cortical Bone ◽  
Elastic Properties ◽  
Continuous Wave ◽  
Wave Technique

Multiplexing of optical fiber gas sensors with a frequency-modulated continuous-wave technique

2001 ◽  
Vol 40 (7) ◽  
pp. 1011 ◽  
Author(s):  
H. B. Yu ◽  
W. Jin ◽  
H. L. Ho ◽  
K. C. Chan ◽  
C. C. Chan ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Gas Sensors ◽  
Continuous Wave ◽  
Wave Technique

scholarly journals Assessment of apical microleakage using tooth clearing method between two softened core obturation techniques

2016 ◽  
Vol 1 (1) ◽  
pp. 39
Author(s):  
Nadia S. Wongsari ◽  
Christine A. Rovani ◽  
Aries C. Trilaksana
Keyword(s):  
Root Canal ◽  
Continuous Wave ◽  
Positive Control ◽  
Single Root ◽  
The Third ◽  
Gutta Percha ◽  
Nail Polish ◽  
Wave Technique ◽  
Post Hoc ◽  
Clearing Method

This study aimed to compare apical microleakage using tooth clearing method between two softened core obturation techniques which are carrier based gutta percha and continuous wave. Samples are maxillary first incisors, with a single root canal. They are devided into three groups of 9 each randomly. The first group is carrier based gutta percha, the second is continuous wave, and the third is lateral condensation as positive control. The teeth were decoronated at the cementoenamel junction, prepared with crown down pressureless technique, and obturated according their group.  All the samples were coated with nail polish except for 2 mm from the apical, and then placed in China Ink for 7 days. After that, the polish were removed and the samples undergone tooth clearing procedure. When the samples had been transparant, they were observed using microscop. Data were collected and analyzed using Anova and Tukey’s post hoc test. The study showed that mean of apical microleakage from continuous wave technique (0.256+0.133) is less than from carrier based gutta percha (0.433+0.173). As the conclusion, there is a significant diffrence (p:0.034) of apical microleakage between continuous wave and carrier based gutta percha (p<0.05).

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