Results 21 to 30 of about 95,038 (264)

Tissue Recognition Based on Electrical Impedance Classified by Support Vector Machine in Spinal Operation Area

open access: yesOrthopaedic Surgery, 2022
Objective One of the major difficulties in spinal surgery is the injury of important tissues caused by tissue misclassification, which is the source of surgical complications. Accurate recognization of the tissues is the key to increase safety and effect
Bingrong Chen   +7 more
doaj   +1 more source

Limitations of Electric Impedance Plethysmography [PDF]

open access: yesCirculation Research, 1954
Electric impedance plethysmography has been offered as a substitute for mechanical plethysmography and would be particularly suitable for regions in which the mechanical method cannot be applied. A comparative investigation of mechanical and impedance plethysmograms, taken simultaneously from a finger or a forearm, revealed that, while the normal ...
Berg, J. van den, Jappe Alberts, A.
openaire   +3 more sources

A low-cost, portable, two-dimensional bioimpedance distribution estimation system based on the AD5933 impedance converter

open access: yesHardwareX, 2022
This study proposes a low-cost, portable, eight-channel electrical impedance tomograph based on the AD5933 impedance converter. The patterns for current injection and voltage measurement are managed by an Arduino Mega 2560 board and four 74HC4067 Texas ...
Juan D. Muñoz   +2 more
doaj   +1 more source

Diagnostic Accuracy of Electrical Impedance Spectroscopy in Non-melanoma Skin Cancer

open access: yesActa Dermato-Venereologica, 2020
Electrical impedance spectroscopy is a non-invasive technique that can help clinicians in diagnosing malignant skin tumours. Depending on the cellular irregularity of the lesion, electrical impedance spectroscopy can reveal changes in the structure and ...
Esra Sarac   +6 more
doaj   +1 more source

A New Method for Non-Invasive Measurement of Skin in the Low Frequency Range [PDF]

open access: yesHealthcare Informatics Research, 2010
ObjectivesThe purpose of our study was to estimate skin structure and conductivity distribution in a cross section of local tissue using non-invasive measurement of impedance data.
Min Soo Kim   +5 more
doaj   +1 more source

Application Status and Prospect of Impedance Spectroscopy in Agricultural Product Quality Detection

open access: yesAgriculture, 2022
The nondestructive testing of agricultural products has always been a key technology for the modernization of agriculture and food. By applying a sinusoidal voltage (current) excitation signal of variable frequency, the relationship between the amplitude,
Junhui Cheng   +5 more
doaj   +1 more source

Analisis Nilai Impedansi Listrik pada Daging Ikan Nila yang Disimpan dalam Lemari Es

open access: yesIndonesian Journal of Applied Physics, 2017
Electrical impedance value analysis on frozen tilapia flesh aims to analyze non-destructive method of electrical impedance to distinguish between fresh and frozen tilapia flesh.
Rizka Rahmatie Agusta Putri   +2 more
doaj   +1 more source

Development and validation of an acoustic-electrical joint testing system for hydrate-bearing porous media

open access: yesAdvances in Mechanical Engineering, 2020
Acoustic and electrical properties are fundamental and important physical properties to characterize hydrate-bearing sediments. A new experimental system called Ultrasound Combined with Electrical Impedance was developed for jointly testing the ...
Lanchang Xing   +4 more
doaj   +1 more source

Measurements of electrical impedance in cementitious mortars: Influence of electrodes and physical dimensions of specimens

open access: yesCase Studies in Construction Materials, 2023
Due to the growing expansion of cities and industries, housing and infrastructure works are essential to meet the demands of development in all countries.
Euclydes Ferrer de Almeida Junior   +1 more
doaj   +1 more source

Electrical Impedance of Cardiac Muscle [PDF]

open access: yesCirculation Research, 1961
Impedances of cat cardiac muscle and frog sartorius muscle were compared at several frequencies before and after interspace ion depletion. Strips of parallel fibers were obtained from papillary muscles and ventricular trabeculae. The impedances were measured in the direction of fiber orientation.
N, SPERELAKIS, T, HOSHIKO
openaire   +2 more sources

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