impedance changes
Mitigation of impedance changes due to electroporation therapy using bursts of high-frequency bipolar pulses
... electrical impedance measurements (1 Hz to 1 MHz) were recorded immediately before and after the treatments to analyze the dynamic impedance changes caused by the treatments at different ...the ...
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Measurement of ventilation and cardiac related impedance changes with electrical impedance tomography
... related impedance signal EIT measures regional changes in air volume and distri- bution in the lung, for example, ventilation, with high accuracy, but less is known of its capacity to measure perfusion ...
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Doppler Impedance Changes at the Fetal Brain Vessels in a Pregnancy Affected with a Multiple Combination of Uteroplacental Anomalies
... marked changes at the cerebral Doppler impedance which seemed to correlate with the risk of preterm ...Doppler impedance returned to normal for gestational age values. Although changes in ...
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Spontaneous Rhythmical Impedance Changes in the Egg of the Trout II
... In those that have been examined, membrane reactivity is almost entirely associated with changes in resistance rather than capacitance, though as mentioned earlier, there is a 15% change[r] ...
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RHYTHMICAL IMPEDANCE CHANGES IN THE EGG OF THE TROUT III
... 75, referring to these and other movements in embryos, says: 'We are still far from any understanding of their meaning, but it will be remembered that protoplasmic contractility plays a [r] ...
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Temperature perturbation model of the opto-galvanic effect in CO2-laser discharges
... First the constant voltage is at the power supply terminals, and current amplitude changes produced by the power supply to compensate for discharge impedance changes will produce a varia[r] ...
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Influence of different electrode belt positions on electrical impedance tomography imaging of regional ventilation: a prospective observational study
... TV changes with regard to the position of the ...of impedance changes (sum of pixel values) and VT (from ventilator) when the electrode belt was applied be- tween ICS (3)/4 and ICS ...PEEP-induced ...
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Flow Orientation as a Possible Explanation of ‘Wave Motion’ and ‘Rheotaxis’ of Spermatozoa
... In order to test the validity of the conclusions drawn from the above experiments, namely, that flow orientation of the spermatozoa causes impedance changes, similar to, if not the same [r] ...
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Lung aeration and ventilation after percutaneous tracheotomy measured by electrical impedance tomography in non-hypoxemic critically ill patients: a prospective observational study
... Electrical impedance tomography (EIT) detects areas of reduced lung aeration by measuring a parallel reduc- tion in electrical resistance, which reflects the fact that electrically conducting structures are less ...
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Electrical impedance tomography measured at two thoracic levels can visualize the ventilation distribution changes at the bedside during a decremental positive end expiratory lung pressure trial
... tidal impedance variation and the tidal volume decreased at the decremental PEEP steps, but the ratio of tidal impedance variation divided by tidal volume decreased at the caudal level and increased at the ...
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A theoretical model of an ultrasonic transducer incorporating spherical resonators
... Ultrasound is employed in a variety of technological applications which include penetration of a medium and analysis of the reflected wave (medical imaging and non-destructive evaluation) and focused energy supply ...
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<p>Comparison of impedance measured by the forced oscillation technique and pulmonary functions, including static lung compliance, in obstructive and interstitial lung disease</p>
... respiratory impedance can also be evaluated by the pattern of Rrs and Xrs dependent on the frequency of oscilla- tion and by the differences between the mean Rrs and Xrs in the expiratory phase and those in the ...
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Study of Influence of Electrode Geometry on Impedance Spectroscopy
... Electrochemical Impedance Spectroscopy (EIS) is a powerful and proven tool for analyzing AC impedance ...AC impedance response. For all electrodes, impedance decreases with the increase of ...
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Microwave Impedance Microscopy Of Nanostructured Carbon
... In any scanning probe technique, the tip-sample interaction may be mediated by a host of different electrical, magnetic, chemical, mechanical, and atomic forces, comparing a land- scape rich in physical information that ...
139
Effect of soil compaction on shoot and root development and nutrients uptake of sesame plant
... mechanical impedance is caused mainly by natural processes and by the use of heavy machinery for soil ...as changes in soil water potential is a major factor that causes high mechanical impedance or ...
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Measuring cardiac changes using electrical impedance during delayed cord clamping: a feasibility trial
... There are a number of limitations to this study. Since this was a feasibility study on healthy term infants our sample size and population is too small to make any conclusions about the clinical impact of delayed cord ...
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Harmonic Transponders: Performance and Challenges
... This work has investigated the performance of harmonic transponders with different varactor and detector diodes and observed the changes these diodes cause on overall transponder performance. The results show that ...
9
Design of a Capacitor-less Low Dropout Voltage Regulator
... output impedance, and high gain [5].When the value of regulated voltage changes, the error amplifier generates the error signal which then drives the pass transistor element in order to regulate the output ...
5
Influence of microphone housing on the directional response of piezoelectric MEMS microphones inspired by Ormia ochracea
... pattern changes from the desired first order directionality to a pattern more resembling a subcardioid or shotgun directivity. Having the inlets at the end of the long axis of the membrane shows an almost ...
8
Do Bus Rapid Transit Systems improve accessibility to
... 11 The impedance parameters for treatment and control groups differ by 4%, showing a marginally higher negative effect of changes in the generalized cost of travel in the control g[r] ...
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