Results 21 to 30 of about 118,060 (323)

Gaseous density calculation by means of relative permittivity measurement

Measurement: Sensors, 2021
This study presents a gaseous density calculation method on the basis of relative permittivity measurement. The relative permittivity of a gas sample is measured by using a cylindrical microwave cavity resonator in wide temperature and pressure ranges ...
Yuya Kano, Naoki Kuramoto
doaj   +1 more source

COMPARISON OF THE IMPULSE AND M-SEQUENCE UWB RADAR SYSTEMS FOR THE ESTIMATION OF THE WALL THICKNESS [PDF]

Acta Electrotechnica et Informatica, 2019
In our laboratory, we developed a simple estimation of the wall thickness by the UWB (Ultra Wide-Band) radar system. The described technique measures the wall thickness in the two steps. The first step is a measurement of the wall relative permittivity.
Miroslav REPKO, Ján GAMEC
doaj   +1 more source

A Novel Approach for Permittivity Estimation of Lunar Regolith Using the Lunar Penetrating Radar Onboard Chang’E-4 Rover

Remote Sensing, 2021
Accurate relative permittivity is essential to the further analysis of lunar regolith. The traditional hyperbola fitting method for the relative permittivity estimation using the lunar penetrating radar generally ignored the effect of the position and ...
Ruigang Wang, Yan Su, Chunyu Ding, Shun Dai, Chendi Liu, Zongyu Zhang, Tiansheng Hong, Qing Zhang, Chunlai Li   +8 more
doaj   +1 more source

Deep-Learning-Based Method for Estimating Permittivity of Ground-Penetrating Radar Targets

Remote Sensing, 2022
Correctly estimating the relative permittivity of buried targets is crucial for accurately determining the target type, geometric size, and reconstruction of shallow surface geological structures.
Hui Wang, Shan Ouyang, Qinghua Liu, Kefei Liao, Lijun Zhou   +4 more
doaj   +1 more source

The Impact of Atmospheric Parameters on the Dielectric Permittivity Values of SikaBlock^®-M150 and Other Rigid Polyurethane Foams Measured with a Capacitive One-Side Access Sensor

Sensors, 2022
A shortage of research on the impact of atmospheric parameters on the measured dielectric permittivity values of rigid polyurethane (PU) foams was identified.
Ilze Beverte, Sergejs Gaidukovs, Janis Andersons, Vilis Skruls   +3 more
doaj   +1 more source

Structure and dielectric properties of electroactive tetraaniline grafted non-polar elastomers [PDF]

, 2020
Intrinsic modification of polybutadiene and block copolymer styrene–butadiene–styrene with the electrically conducting emeraldine salt of tetraaniline (TANI) via a three-step grafting method, is reported in this work.
Ellingford, Christopher, Pengchaicharoen, Atcharaporn, Wan, Chaoying, Wemyss, Alan M.   +3 more
core   +1 more source

Design and Fabrication of Modified SMA-Connector Sensor for Detecting Water Adulteration in Honey and Natural Latex

Applied System Innovation, 2021
A detection system for water adulteration in honey is proposed. It consists of a modified SMA-connector sensor and a vector network analyzer. A modified SMA-connector sensor is applied to measure complex relative permittivity, electrical conductivity ...
Adisorn Nuan-On, Niwat Angkawisittpan, Nawarat Piladaeng, Chaiyong Soemphol   +3 more
doaj   +1 more source

Performance of Electrical Spectroscopy using a Resper Probe to Measure the Salinity and Water Content of Concrete or Terrestrial Soil [PDF]

, 2011
This paper discusses the performance of electrical spectroscopy using a RESPER probe to measure the salinity s and volumetric content {\theta}W of the water in concrete or terrestrial soil.
Settimi, A.
core   +4 more sources

STUDY OF NEGATIVE REFRACTIVE INDEX IN Rb FOUR-LEVEL N-TYPE ATOMIC GAS MEDIUM

Tạp chí Khoa học Đại học Đà Lạt, 2022
In this work, we study the generation of a negative refractive index based on electromagnetically induced transparency (EIT) in a Rb four-level N-type atomic gas medium.
Huy Bang Nguyen, Nguyen Mai Anh Le, Thi Minh Phuong Le, Hai Quang Ho, Van Doai Le   +4 more
doaj   +1 more source

On the sensitivity of generic porous optical sensors [PDF]

, 2012
A porous material was considered as a platform for optical sensing. It was envisaged that the porous material was infiltrated by a fluid which contains an agent to be sensed.
Abdulhalim, Alù, Bremer, Choi, Cook, De Stefano, Devender, Homola, Lakhtakia, Lakhtakia, Lakhtakia, Lakhtakia, Lovat, Mackay, Mackay, Mackay, Mackay, Mackay, Mackay, Mackay, Menzel, Messier, Michel, Michel, Michel, Navarro-Cía, Pinet, Polo, Polo, PoloMahalik, Pursel, Saarinen, Scarano, Schiebener, Shin, Simovski, Ward, Weiglhofer, Weiglhofer   +38 more
core   +2 more sources