Results 281 to 290 of about 1,745,091 (321)
Some of the next articles are maybe not open access.
A compact electrical capacitance tomography system
2008 IEEE International Workshop on Imaging Systems and Techniques, 2008Most existing electrical capacitance tomography (ECT) systems are designed using a 19'' Eurocase and they are relatively expensive. To reduce the size and cost, a compact ECT system has been developed. It is based on a charge/discharge capacitance measuring circuit and a USB data acquisition (DAQ) unit from NI.
Kjærsgaard-Rasmussen, J., Yang, W. Q.
openaire +2 more sources
Planar array 3D electrical capacitance tomography
Insight - Non-Destructive Testing and Condition Monitoring, 2013Electrical capacitance tomography (ECT) is a promising non-invasive imaging technique that is capable of mapping the dielectric permittivity of an object. ECT has great potential to be used as a new non-destructive evaluation (NDE) method. In the majority of NDE applications for ECT there is only limited access to the targeted objects, making ...
Z Ye, R Banasiak, M Soleimani
openaire +1 more source
The Electrical Capacitance Diaphragm Manometer
Review of Scientific Instruments, 1942A new type of diaphragm manometer for direct pressure measurements in the arterial blood stream and in other fluid systems is described using a radiofrequency, crystal-controlled oscillator and a pressure-sensitive condenser in the pick-up unit. The potential drop due to the plate current of the oscillator tube flowing through a resistor is amplified ...
openaire +1 more source
Electrical Capacitance and Membrane Area
1989Almost 200 years of scientific inquiry were necessary to understand that the electric skate produced its powerful electrical discharge by summing the membrane depolarizations of the cells in each prism in series and having all the prisms in parallel. Cavendishs’ “battery” consisted of 40 Leyden jars, the only means for storing electricity at that time,
openaire +1 more source
Sucrose solutions alter the electric capacitance and dielectric permittivity of lipid bilayers
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2018V. Vitkova +4 more
semanticscholar +1 more source
Capacitive electric musical instrument vibration transducer
The Journal of the Acoustical Society of America, 2009A capacitive electric musical instrument vibration transducer contains one or more parallel plate variable capacitors. Each variable capacitor contains one vibrating variable capacitor plate, an electrically conducting surface that comprises, covers, or is embedded within an acoustically emitting vibrating surface on a musical instrument (such as a ...
openaire +1 more source
Imaging combustion using electrical capacitance tomography
IEE Seminar on Advanced Sensors and Instrumentation Systems for Combustion Processes, 2000It is well known that flames are rich in charged particles, ions and free electrons and such electrical activity will modify the permittivity and conductivity of the reaction zone. Work at UMIST over the past decade has led to the development of sensitive circuitry to detect such electrical changes within an enclosed volume.
openaire +1 more source
Electric capacitance tomography for nondestructive testing of standing trees
, 2019S. Carcangiu, A. Fanni, A. Montisci
semanticscholar +1 more source
Three-dimensional electrical capacitance tomography imaging
Insight - Non-Destructive Testing and Condition Monitoring, 2006Electrical capacitance tomography (ECT) is a non-destructive imaging technique that aims at visualisation of the permittivity distribution of a dielectric object based on the measured capacitance. Volumetric image reconstruction of three-dimensional ECT is a non-linear ill-posed inverse problem.
openaire +1 more source